export ARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun.*/sparc/ -e s/sparc.*/sparc/ \
-e s/arm.*/arm/ -e s/sa110/arm/ -e s/sh.*/sh/ \
-e s/s390x/s390/ -e s/parisc.*/hppa/ \
- -e s/ppc.*/powerpc/ -e s/mips.*/mips/ )
+ -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \
+ -e s/xtensa.*/xtensa/ )
#---------------------------------------------------------
config TARGET_x86_64
bool "x86_64"
+config TARGET_xtensa
+ bool "xtensa"
+
endchoice
source "extra/Configs/Config.x86_64"
endif
+if TARGET_xtensa
+source "extra/Configs/Config.xtensa"
+endif
+
config TARGET_SUBARCH
string
default "e500" if CONFIG_E500
--- /dev/null
+#
+# For a description of the syntax of this configuration file,
+# see extra/config/kconfig-language.txt
+#
+
+config TARGET_ARCH
+ string
+ default "xtensa"
+
+config ARCH_CFLAGS
+ string
+
/* Keep this the last entry. */
#define R_NIOS2_NUM 22
+/* Xtensa-specific declarations */
+
+/* Xtensa values for the Dyn d_tag field. */
+#define DT_XTENSA_GOT_LOC_OFF (DT_LOPROC + 0)
+#define DT_XTENSA_GOT_LOC_SZ (DT_LOPROC + 1)
+#define DT_XTENSA_NUM 2
+
+/* Xtensa relocations. */
+#define R_XTENSA_NONE 0
+#define R_XTENSA_32 1
+#define R_XTENSA_RTLD 2
+#define R_XTENSA_GLOB_DAT 3
+#define R_XTENSA_JMP_SLOT 4
+#define R_XTENSA_RELATIVE 5
+#define R_XTENSA_PLT 6
+#define R_XTENSA_OP0 8
+#define R_XTENSA_OP1 9
+#define R_XTENSA_OP2 10
+#define R_XTENSA_ASM_EXPAND 11
+#define R_XTENSA_ASM_SIMPLIFY 12
+#define R_XTENSA_GNU_VTINHERIT 15
+#define R_XTENSA_GNU_VTENTRY 16
+#define R_XTENSA_DIFF8 17
+#define R_XTENSA_DIFF16 18
+#define R_XTENSA_DIFF32 19
+#define R_XTENSA_SLOT0_OP 20
+#define R_XTENSA_SLOT1_OP 21
+#define R_XTENSA_SLOT2_OP 22
+#define R_XTENSA_SLOT3_OP 23
+#define R_XTENSA_SLOT4_OP 24
+#define R_XTENSA_SLOT5_OP 25
+#define R_XTENSA_SLOT6_OP 26
+#define R_XTENSA_SLOT7_OP 27
+#define R_XTENSA_SLOT8_OP 28
+#define R_XTENSA_SLOT9_OP 29
+#define R_XTENSA_SLOT10_OP 30
+#define R_XTENSA_SLOT11_OP 31
+#define R_XTENSA_SLOT12_OP 32
+#define R_XTENSA_SLOT13_OP 33
+#define R_XTENSA_SLOT14_OP 34
+#define R_XTENSA_SLOT0_ALT 35
+#define R_XTENSA_SLOT1_ALT 36
+#define R_XTENSA_SLOT2_ALT 37
+#define R_XTENSA_SLOT3_ALT 38
+#define R_XTENSA_SLOT4_ALT 39
+#define R_XTENSA_SLOT5_ALT 40
+#define R_XTENSA_SLOT6_ALT 41
+#define R_XTENSA_SLOT7_ALT 42
+#define R_XTENSA_SLOT8_ALT 43
+#define R_XTENSA_SLOT9_ALT 44
+#define R_XTENSA_SLOT10_ALT 45
+#define R_XTENSA_SLOT11_ALT 46
+#define R_XTENSA_SLOT12_ALT 47
+#define R_XTENSA_SLOT13_ALT 48
+#define R_XTENSA_SLOT14_ALT 49
+/* Keep this the last entry. */
+#define R_XTENSA_NUM 50
+
__END_DECLS
#endif /* elf.h */
* This requires that load_addr must already be defined... */
#if defined(mc68000) || defined(__arm__) || defined(__thumb__) || \
defined(__mips__) || defined(__sh__) || defined(__powerpc__) || \
- defined(__avr32__)
+ defined(__avr32__) || defined(__xtensa__)
# define CONSTANT_STRING_GOT_FIXUP(X) \
if ((X) < (const char *) load_addr) (X) += load_addr
# define NO_EARLY_SEND_STDERR
--- /dev/null
+/* vi: set sw=4 ts=4: */
+/* Xtensa ELF shared library loader suppport
+ *
+ * Copyright (C) 2007 Tensilica Inc.
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+static const char *_dl_reltypes_tab[] =
+{
+ "R_XTENSA_NONE",
+ "R_XTENSA_32",
+ "R_XTENSA_RTLD",
+ "R_XTENSA_GLOB_DAT",
+ "R_XTENSA_JMP_SLOT",
+ "R_XTENSA_RELATIVE",
+ "R_XTENSA_PLT",
+ "R_XTENSA_UNUSED7",
+ "R_XTENSA_OP0",
+ "R_XTENSA_OP1",
+ "R_XTENSA_OP2",
+ "R_XTENSA_ASM_EXPAND",
+ "R_XTENSA_ASM_SIMPLIFY",
+ "R_XTENSA_UNUSED13",
+ "R_XTENSA_UNUSED14",
+ "R_XTENSA_GNU_VTINHERIT",
+ "R_XTENSA_GNU_VTENTRY",
+ "R_XTENSA_DIFF8",
+ "R_XTENSA_DIFF16",
+ "R_XTENSA_DIFF32",
+ "R_XTENSA_SLOT0_OP",
+ "R_XTENSA_SLOT1_OP",
+ "R_XTENSA_SLOT2_OP",
+ "R_XTENSA_SLOT3_OP",
+ "R_XTENSA_SLOT4_OP",
+ "R_XTENSA_SLOT5_OP",
+ "R_XTENSA_SLOT6_OP",
+ "R_XTENSA_SLOT7_OP",
+ "R_XTENSA_SLOT8_OP",
+ "R_XTENSA_SLOT9_OP",
+ "R_XTENSA_SLOT10_OP",
+ "R_XTENSA_SLOT11_OP",
+ "R_XTENSA_SLOT12_OP",
+ "R_XTENSA_SLOT13_OP",
+ "R_XTENSA_SLOT14_OP",
+ "R_XTENSA_SLOT0_ALT",
+ "R_XTENSA_SLOT1_ALT",
+ "R_XTENSA_SLOT2_ALT",
+ "R_XTENSA_SLOT3_ALT",
+ "R_XTENSA_SLOT4_ALT",
+ "R_XTENSA_SLOT5_ALT",
+ "R_XTENSA_SLOT6_ALT",
+ "R_XTENSA_SLOT7_ALT",
+ "R_XTENSA_SLOT8_ALT",
+ "R_XTENSA_SLOT9_ALT",
+ "R_XTENSA_SLOT10_ALT",
+ "R_XTENSA_SLOT11_ALT",
+ "R_XTENSA_SLOT12_ALT",
+ "R_XTENSA_SLOT13_ALT",
+ "R_XTENSA_SLOT14_ALT"
+};
--- /dev/null
+/* vi: set sw=4 ts=4: */
+/*
+ * Xtensa ELF code used by dl-startup.c.
+ *
+ * Copyright (C) 2007 Tensilica Inc.
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ * Parts taken from glibc/sysdeps/xtensa/dl-machine.h.
+ */
+
+__asm__ (
+ " .text\n"
+ " .align 4\n"
+ " .global _start\n"
+ " .type _start, @function\n"
+ "_start:\n"
+ " # Compute load offset in a2: the GOT has not yet been relocated\n"
+ " # but the entries for local symbols contain the relative offsets\n"
+ " # and we can explicitly add the load offset in this code.\n"
+ " _call0 0f\n"
+ " .align 4\n"
+ "0: movi a3, _start+3\n"
+ " sub a2, a0, a3\n"
+ " # Make sure a0 is cleared to mark the top of stack.\n"
+ " movi a0, 0\n"
+ " # user_entry_point = _dl_start(pointer to argument block)\n"
+ " movi a4, _dl_start\n"
+ " mov a6, sp\n"
+ " add a4, a4, a2\n"
+ " callx4 a4\n"
+ " # Save user_entry_point so we can jump to it.\n"
+ " mov a3, a6\n"
+ " l32i a7, sp, 0 # load argc\n"
+ " # Load _dl_skip_args into a4.\n"
+ " movi a4, _dl_skip_args\n"
+ " l32i a4, a4, 0\n"
+ " bnez a4, .Lfixup_stack\n"
+ ".Lfixup_stack_ret:\n"
+ " # Pass finalizer (_dl_fini) in a2 to the user entry point.\n"
+ " movi a2, _dl_fini\n"
+ " # Jump to user's entry point (_start).\n"
+ " jx a3\n"
+ ".Lfixup_stack:\n"
+ " # argc -= _dl_skip_args (with argc @ sp+0)\n"
+ " sub a7, a7, a4\n"
+ " s32i a7, sp, 0\n"
+ " # Shift everything by _dl_skip_args.\n"
+ " addi a5, sp, 4 # a5 = destination ptr = argv\n"
+ " add a4, a5, a4 # a4 = source ptr = argv + _dl_skip_args\n"
+ " # Shift argv.\n"
+ "1: l32i a6, a4, 0\n"
+ " addi a4, a4, 4\n"
+ " s32i a6, a5, 0\n"
+ " addi a5, a5, 4\n"
+ " bnez a6, 1b\n"
+ " # Shift envp.\n"
+ "2: l32i a6, a4, 0\n"
+ " addi a4, a4, 4\n"
+ " s32i a6, a5, 0\n"
+ " addi a5, a5, 4\n"
+ " bnez a6, 2b\n"
+ " # Shift auxiliary table.\n"
+ "3: l32i a6, a4, 0\n"
+ " l32i a8, a4, 4\n"
+ " addi a4, a4, 8\n"
+ " s32i a6, a5, 0\n"
+ " s32i a8, a5, 4\n"
+ " addi a5, a5, 8\n"
+ " bnez a6, 3b\n"
+ " j .Lfixup_stack_ret");
+
+/* Get a pointer to the argv value. */
+#define GET_ARGV(ARGVP, ARGS) ARGVP = (((unsigned long *) ARGS) + 1)
+
+/* Function calls are not safe until the GOT relocations have been done. */
+#define NO_FUNCS_BEFORE_BOOTSTRAP
+
+#define PERFORM_BOOTSTRAP_GOT(tpnt) \
+do { \
+ xtensa_got_location *got_loc; \
+ unsigned long l_addr = tpnt->loadaddr; \
+ Elf32_Word relative_count; \
+ unsigned long rel_addr; \
+ int x; \
+\
+ got_loc = (xtensa_got_location *) \
+ (tpnt->dynamic_info[DT_XTENSA (GOT_LOC_OFF)] + l_addr); \
+\
+ for (x = 0; x < tpnt->dynamic_info[DT_XTENSA (GOT_LOC_SZ)]; x++) { \
+ Elf32_Addr got_start, got_end; \
+ got_start = got_loc[x].offset & ~(PAGE_SIZE - 1); \
+ got_end = ((got_loc[x].offset + got_loc[x].length + PAGE_SIZE - 1) \
+ & ~(PAGE_SIZE - 1)); \
+ _dl_mprotect ((void *)(got_start + l_addr), got_end - got_start, \
+ PROT_READ | PROT_WRITE | PROT_EXEC); \
+ } \
+\
+ /* The following is a stripped down version of the code following \
+ the invocation of PERFORM_BOOTSTRAP_GOT in dl-startup.c. That \
+ code is skipped when PERFORM_BOOTSTRAP_GOT is defined, so it has \
+ to be done here instead. */ \
+ relative_count = tpnt->dynamic_info[DT_RELCONT_IDX]; \
+ rel_addr = tpnt->dynamic_info[DT_RELOC_TABLE_ADDR]; \
+ if (rel_addr) \
+ elf_machine_relative(load_addr, rel_addr, relative_count); \
+} while (0)
--- /dev/null
+/* We can't use the real errno in ldso, since it has not yet
+ * been dynamicly linked in yet. */
+#include "sys/syscall.h"
+extern int _dl_errno;
+#undef __set_errno
+#define __set_errno(X) {(_dl_errno) = (X);}
+
--- /dev/null
+/* Machine-dependent ELF dynamic relocation.
+ Parts copied from glibc/sysdeps/xtensa/dl-machine.h
+ Copyright (C) 2001, 2007 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+/* Define this if the system uses RELOCA. */
+#define ELF_USES_RELOCA
+#include <elf.h>
+#include <link.h>
+
+/* Translate a processor specific dynamic tag to the index
+ in l_info array. */
+#define DT_XTENSA(x) (DT_XTENSA_##x - DT_LOPROC + DT_NUM + OS_NUM)
+
+typedef struct xtensa_got_location_struct {
+ Elf32_Off offset;
+ Elf32_Word length;
+} xtensa_got_location;
+
+/* Initialization sequence for the GOT. */
+#define INIT_GOT(GOT_BASE, MODULE) \
+ do { \
+ xtensa_got_location *got_loc; \
+ Elf32_Addr l_addr = MODULE->loadaddr; \
+ int x; \
+ \
+ got_loc = (xtensa_got_location *) \
+ (MODULE->dynamic_info[DT_XTENSA (GOT_LOC_OFF)] + l_addr); \
+ \
+ for (x = 0; x < MODULE->dynamic_info[DT_XTENSA (GOT_LOC_SZ)]; x++) \
+ { \
+ Elf32_Addr got_start, got_end; \
+ got_start = got_loc[x].offset & ~(PAGE_SIZE - 1); \
+ got_end = ((got_loc[x].offset + got_loc[x].length + PAGE_SIZE - 1) \
+ & ~(PAGE_SIZE - 1)); \
+ _dl_mprotect ((void *)(got_start + l_addr) , got_end - got_start, \
+ PROT_READ | PROT_WRITE | PROT_EXEC); \
+ } \
+ \
+ /* Fill in first GOT entry according to the ABI. */ \
+ GOT_BASE[0] = (unsigned long) _dl_linux_resolve; \
+ } while (0)
+
+/* Parse dynamic info */
+#define ARCH_NUM 2
+#define ARCH_DYNAMIC_INFO(dpnt, dynamic, debug_addr) \
+ do { \
+ if (dpnt->d_tag == DT_XTENSA_GOT_LOC_OFF) \
+ dynamic[DT_XTENSA (GOT_LOC_OFF)] = dpnt->d_un.d_ptr; \
+ else if (dpnt->d_tag == DT_XTENSA_GOT_LOC_SZ) \
+ dynamic[DT_XTENSA (GOT_LOC_SZ)] = dpnt->d_un.d_val; \
+ } while (0)
+
+/* Here we define the magic numbers that this dynamic loader should accept. */
+#define MAGIC1 EM_XTENSA
+#undef MAGIC2
+
+/* Used for error messages. */
+#define ELF_TARGET "Xtensa"
+
+struct elf_resolve;
+extern unsigned long _dl_linux_resolver (struct elf_resolve *, int);
+
+/* 4096 bytes alignment */
+#define PAGE_ALIGN 0xfffff000
+#define ADDR_ALIGN 0xfff
+#define OFFS_ALIGN 0x7ffff000
+
+/* ELF_RTYPE_CLASS_PLT iff TYPE describes relocation of a PLT entry, so
+ undefined references should not be allowed to define the value. */
+#define elf_machine_type_class(type) \
+ (((type) == R_XTENSA_JMP_SLOT) * ELF_RTYPE_CLASS_PLT)
+
+/* Return the link-time address of _DYNAMIC. */
+static inline Elf32_Addr
+elf_machine_dynamic (void)
+{
+ /* This function is only used while bootstrapping the runtime linker.
+ The "_DYNAMIC" symbol is always local so its GOT entry will initially
+ contain the link-time address. */
+ return (Elf32_Addr) &_DYNAMIC;
+}
+
+/* Return the run-time load address of the shared object. */
+static inline Elf32_Addr
+elf_machine_load_address (void)
+{
+ Elf32_Addr addr, tmp;
+
+ /* At this point, the runtime linker is being bootstrapped and the GOT
+ entry used for ".Lhere" will contain the link address. The CALL0 will
+ produce the dynamic address of ".Lhere" + 3. Thus, the end result is
+ equal to "dynamic_address(.Lhere) - link_address(.Lhere)". */
+ __asm__ ("\
+ movi %0, .Lhere\n\
+ mov %1, a0\n\
+.Lhere: _call0 0f\n\
+ .align 4\n\
+0: sub %0, a0, %0\n\
+ mov a0, %1"
+ : "=a" (addr), "=a" (tmp));
+
+ return addr - 3;
+}
+
+static inline void
+elf_machine_relative (Elf32_Addr load_off, const Elf32_Addr rel_addr,
+ Elf32_Word relative_count)
+{
+ Elf32_Rela *rpnt = (Elf32_Rela *) rel_addr;
+ while (relative_count--)
+ {
+ Elf32_Addr *const reloc_addr = (Elf32_Addr *) (load_off + rpnt->r_offset);
+ *reloc_addr += load_off + rpnt->r_addend;
+ rpnt++;
+ }
+}
--- /dev/null
+/* vi: set sw=4 ts=4: */
+/* Xtensa ELF shared library loader suppport
+ *
+ * Copyright (C) 2007 Tensilica Inc.
+ * Copyright (c) 1994-2000 Eric Youngdale, Peter MacDonald,
+ * David Engel, Hongjiu Lu and Mitch D'Souza
+ * Copyright (C) 2001-2004 Erik Andersen
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. The name of the above contributors may not be
+ * used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include "ldso.h"
+
+unsigned long
+_dl_linux_resolver (struct elf_resolve *tpnt, int reloc_entry)
+{
+ int reloc_type;
+ ELF_RELOC *this_reloc;
+ char *strtab;
+ Elf32_Sym *symtab;
+ int symtab_index;
+ char *rel_addr;
+ char *new_addr;
+ char **got_addr;
+ char *symname;
+
+ rel_addr = (char *) tpnt->dynamic_info[DT_JMPREL];
+ this_reloc = (ELF_RELOC *) (rel_addr + reloc_entry);
+ reloc_type = ELF32_R_TYPE (this_reloc->r_info);
+ symtab_index = ELF32_R_SYM (this_reloc->r_info);
+
+ symtab = (Elf32_Sym *) tpnt->dynamic_info[DT_SYMTAB];
+ strtab = (char *) tpnt->dynamic_info[DT_STRTAB];
+ symname = strtab + symtab[symtab_index].st_name;
+
+ if (unlikely (reloc_type != R_XTENSA_JMP_SLOT)) {
+ _dl_dprintf (2, "%s: Incorrect relocation type in jump relocations\n",
+ _dl_progname);
+ _dl_exit (1);
+ }
+
+ /* Address of the literal to fix up. */
+ got_addr = (char **) (this_reloc->r_offset + tpnt->loadaddr);
+
+ /* Get the address of the GOT entry. */
+ new_addr = _dl_find_hash (symname, tpnt->symbol_scope, tpnt,
+ ELF_RTYPE_CLASS_PLT);
+ if (unlikely (!new_addr)) {
+ _dl_dprintf (2, "%s: can't resolve symbol '%s'\n",
+ _dl_progname, symname);
+ _dl_exit (1);
+ }
+
+#if defined (__SUPPORT_LD_DEBUG__)
+ if (_dl_debug_bindings) {
+ _dl_dprintf (_dl_debug_file, "\nresolve function: %s", symname);
+ if (_dl_debug_detail)
+ _dl_dprintf (_dl_debug_file, "\n\tpatched %x ==> %x @ %x\n",
+ *got_addr, new_addr, got_addr);
+ }
+ if (!_dl_debug_nofixups)
+ *got_addr = new_addr;
+#else
+ *got_addr = new_addr;
+#endif
+
+ return (unsigned long) new_addr;
+}
+
+
+static int
+_dl_parse (struct elf_resolve *tpnt, struct dyn_elf *scope,
+ unsigned long rel_addr, unsigned long rel_size,
+ int (*reloc_fnc) (struct elf_resolve *tpnt, struct dyn_elf *scope,
+ ELF_RELOC *rpnt, Elf32_Sym *symtab, char *strtab))
+{
+ unsigned int i;
+ char *strtab;
+ Elf32_Sym *symtab;
+ ELF_RELOC *rpnt;
+ int symtab_index;
+
+ /* Parse the relocation information. */
+ rpnt = (ELF_RELOC *) rel_addr;
+ rel_size /= sizeof (ELF_RELOC);
+
+ symtab = (Elf32_Sym *) tpnt->dynamic_info[DT_SYMTAB];
+ strtab = (char *) tpnt->dynamic_info[DT_STRTAB];
+
+ for (i = 0; i < rel_size; i++, rpnt++) {
+ int res;
+
+ symtab_index = ELF32_R_SYM (rpnt->r_info);
+
+ debug_sym (symtab, strtab, symtab_index);
+ debug_reloc (symtab, strtab, rpnt);
+
+ res = reloc_fnc (tpnt, scope, rpnt, symtab, strtab);
+
+ if (res == 0)
+ continue;
+
+ _dl_dprintf (2, "\n%s: ", _dl_progname);
+
+ if (symtab_index)
+ _dl_dprintf (2, "symbol '%s': ",
+ strtab + symtab[symtab_index].st_name);
+
+ if (unlikely (res < 0)) {
+ int reloc_type = ELF32_R_TYPE (rpnt->r_info);
+#if defined (__SUPPORT_LD_DEBUG__)
+ _dl_dprintf (2, "can't handle reloc type %s\n",
+ _dl_reltypes (reloc_type));
+#else
+ _dl_dprintf (2, "can't handle reloc type %x\n", reloc_type);
+#endif
+ _dl_exit (-res);
+ }
+ if (unlikely (res > 0)) {
+ _dl_dprintf (2, "can't resolve symbol\n");
+ return res;
+ }
+ }
+
+ return 0;
+}
+
+
+static int
+_dl_do_reloc (struct elf_resolve *tpnt, struct dyn_elf *scope,
+ ELF_RELOC *rpnt, Elf32_Sym *symtab, char *strtab)
+{
+ int reloc_type;
+ int symtab_index;
+ char *symname;
+ Elf32_Sym *sym;
+ Elf32_Addr *reloc_addr;
+ Elf32_Addr symbol_addr;
+#if defined (__SUPPORT_LD_DEBUG__)
+ Elf32_Addr old_val;
+#endif
+
+ reloc_addr = (Elf32_Addr *) (tpnt->loadaddr + rpnt->r_offset);
+ reloc_type = ELF32_R_TYPE (rpnt->r_info);
+ symtab_index = ELF32_R_SYM (rpnt->r_info);
+ sym = &symtab[symtab_index];
+ symbol_addr = 0;
+ symname = strtab + sym->st_name;
+
+ if (symtab_index) {
+ symbol_addr = (Elf32_Addr)
+ _dl_find_hash (symname, scope, tpnt,
+ elf_machine_type_class (reloc_type));
+
+ /*
+ * We want to allow undefined references to weak symbols - this might
+ * have been intentional. We should not be linking local symbols
+ * here, so all bases should be covered.
+ */
+ if (unlikely (!symbol_addr &&
+ ELF32_ST_BIND (sym->st_info) != STB_WEAK)) {
+ _dl_dprintf (2, "%s: can't resolve symbol '%s'\n",
+ _dl_progname, symname);
+ _dl_exit (1);
+ }
+ }
+
+#if defined (__SUPPORT_LD_DEBUG__)
+ old_val = *reloc_addr;
+#endif
+
+ switch (reloc_type) {
+ case R_XTENSA_NONE:
+ break;
+
+ case R_XTENSA_GLOB_DAT:
+ case R_XTENSA_JMP_SLOT:
+ *reloc_addr = symbol_addr + rpnt->r_addend;
+ break;
+
+ case R_XTENSA_RTLD:
+ if (rpnt->r_addend == 1) {
+ /* Grab the function pointer stashed at the beginning of the
+ GOT by the GOT_INIT function. */
+ *reloc_addr = *(Elf32_Addr *) tpnt->dynamic_info[DT_PLTGOT];
+ } else if (rpnt->r_addend == 2) {
+ /* Store the link map for the object. */
+ *reloc_addr = (Elf32_Addr) tpnt;
+ } else {
+ _dl_exit (1);
+ }
+ break;
+
+ case R_XTENSA_RELATIVE:
+ *reloc_addr += tpnt->loadaddr + rpnt->r_addend;
+ break;
+
+ default:
+ return -1; /* Calls _dl_exit(1). */
+ }
+#if defined (__SUPPORT_LD_DEBUG__)
+ if (_dl_debug_reloc && _dl_debug_detail)
+ _dl_dprintf (_dl_debug_file, "\tpatched: %x ==> %x @ %x",
+ old_val, *reloc_addr, reloc_addr);
+#endif
+
+ return 0;
+}
+
+
+static int
+_dl_do_lazy_reloc (struct elf_resolve *tpnt, struct dyn_elf *scope,
+ ELF_RELOC *rpnt, Elf32_Sym *symtab, char *strtab)
+{
+ int reloc_type;
+ Elf32_Addr *reloc_addr;
+#if defined (__SUPPORT_LD_DEBUG__)
+ Elf32_Addr old_val;
+#endif
+
+ reloc_addr = (Elf32_Addr *) (tpnt->loadaddr + rpnt->r_offset);
+ reloc_type = ELF32_R_TYPE (rpnt->r_info);
+
+#if defined (__SUPPORT_LD_DEBUG__)
+ old_val = *reloc_addr;
+#endif
+
+ switch (reloc_type) {
+ case R_XTENSA_JMP_SLOT:
+ /* Perform a RELATIVE reloc on the GOT entry that transfers
+ to the stub function. */
+ *reloc_addr += tpnt->loadaddr;
+ break;
+ case R_XTENSA_NONE:
+ break;
+ default:
+ _dl_exit (1);
+ }
+
+#if defined (__SUPPORT_LD_DEBUG__)
+ if (_dl_debug_reloc && _dl_debug_detail)
+ _dl_dprintf (_dl_debug_file, "\tpatched: %x ==> %x @ %x",
+ old_val, *reloc_addr, reloc_addr);
+#endif
+ return 0;
+
+}
+
+void
+_dl_parse_lazy_relocation_information (struct dyn_elf *rpnt,
+ unsigned long rel_addr,
+ unsigned long rel_size)
+{
+ (void) _dl_parse (rpnt->dyn, NULL, rel_addr, rel_size, _dl_do_lazy_reloc);
+}
+
+int
+_dl_parse_relocation_information (struct dyn_elf *rpnt,
+ unsigned long rel_addr,
+ unsigned long rel_size)
+{
+ return _dl_parse (rpnt->dyn, rpnt->dyn->symbol_scope, rel_addr, rel_size,
+ _dl_do_reloc);
+}
--- /dev/null
+/* Xtensa dynamic resolver.
+ Parts copied from glibc/sysdeps/xtensa/dl-trampoline.S
+ Copyright (C) 2007 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+#define MIN_FRAME_SIZE 32
+
+#ifdef __XTENSA_EB__
+#define XTENSA_IMM12_FLD_OFFSET 8
+#else /* __XTENSA_EL__ */
+#define XTENSA_IMM12_FLD_OFFSET 12
+#endif /* __XTENSA_EL__ */
+
+ .text
+ .align 4
+ .global _dl_linux_resolve
+ .type _dl_linux_resolve, @function
+_dl_linux_resolve:
+ /* Fix up the high 2 bits of the return address. */
+ mov a14, a0 // save a0 temporarily
+ _call0 0f
+ .align 4
+0: extui a13, a0, 30, 2
+ slli a13, a13, 30
+ mov a0, a14 // restore a0
+ slli a12, a0, 2
+ srli a12, a12, 2
+ or a12, a12, a13
+
+ /* Call the fixup function. */
+ movi a8, _dl_linux_resolver
+ callx8 a8
+
+ /* Extract the target's frame size from the ENTRY instruction. */
+ l32i a11, a10, 0
+ extui a11, a11, XTENSA_IMM12_FLD_OFFSET, 12
+ slli a11, a11, 3
+
+ addi a11, a11, -MIN_FRAME_SIZE
+ sub a11, sp, a11
+ movsp sp, a11
+
+ /* Jump to the next instruction past the ENTRY. */
+ addi a10, a10, 3
+ jx a10
+ .size _dl_linux_resolve, . - _dl_linux_resolve
--- /dev/null
+# Makefile for uClibc
+#
+# Copyright (C) 2000-2005 Erik Andersen <andersen@uclibc.org>
+#
+# Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+#
+
+top_srcdir:=../../../
+top_builddir:=../../../
+all: objs
+include $(top_builddir)Rules.mak
+include ../Makefile.in
+include $(top_srcdir)Makerules
--- /dev/null
+/* Optimized memcpy for Xtensa.
+ Copyright (C) 2001, 2007 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+#include "../../sysdeps/linux/xtensa/sysdep.h"
+#include <bits/xtensa-config.h>
+
+ .macro src_b r, w0, w1
+#ifdef __XTENSA_EB__
+ src \r, \w0, \w1
+#else
+ src \r, \w1, \w0
+#endif
+ .endm
+
+ .macro ssa8 r
+#ifdef __XTENSA_EB__
+ ssa8b \r
+#else
+ ssa8l \r
+#endif
+ .endm
+
+/* If the Xtensa Unaligned Load Exception option is not used, this
+ code can run a few cycles faster by relying on the low address bits
+ being ignored. However, if the code is then run with an Xtensa ISS
+ client that checks for unaligned accesses, it will produce a lot of
+ warning messages. Set this flag to disable the use of unaligned
+ accesses and keep the ISS happy. */
+
+#define UNALIGNED_ADDRESSES_CHECKED 1
+
+/* Do not use .literal_position in the ENTRY macro. */
+#undef LITERAL_POSITION
+#define LITERAL_POSITION
+
+
+/* void *memcpy (void *dst, const void *src, size_t len)
+
+ The algorithm is as follows:
+
+ If the destination is unaligned, align it by conditionally
+ copying 1- and/or 2-byte pieces.
+
+ If the source is aligned, copy 16 bytes with a loop, and then finish up
+ with 8, 4, 2, and 1-byte copies conditional on the length.
+
+ Else (if source is unaligned), do the same, but use SRC to align the
+ source data.
+
+ This code tries to use fall-through branches for the common
+ case of aligned source and destination and multiple of 4 (or 8) length. */
+
+
+/* Byte by byte copy. */
+
+ .text
+ .align 4
+ .literal_position
+__memcpy_aux:
+
+ /* Skip a byte to get 1 mod 4 alignment for LOOPNEZ
+ (0 mod 4 alignment for LBEG). */
+ .byte 0
+
+.Lbytecopy:
+#if XCHAL_HAVE_LOOPS
+ loopnez a4, 2f
+#else
+ beqz a4, 2f
+ add a7, a3, a4 // a7 = end address for source
+#endif
+1: l8ui a6, a3, 0
+ addi a3, a3, 1
+ s8i a6, a5, 0
+ addi a5, a5, 1
+#if !XCHAL_HAVE_LOOPS
+ blt a3, a7, 1b
+#endif
+2: retw
+
+
+/* Destination is unaligned. */
+
+ .align 4
+.Ldst1mod2: // dst is only byte aligned
+
+ /* Do short copies byte-by-byte. */
+ _bltui a4, 7, .Lbytecopy
+
+ /* Copy 1 byte. */
+ l8ui a6, a3, 0
+ addi a3, a3, 1
+ addi a4, a4, -1
+ s8i a6, a5, 0
+ addi a5, a5, 1
+
+ /* Return to main algorithm if dst is now aligned. */
+ _bbci.l a5, 1, .Ldstaligned
+
+.Ldst2mod4: // dst has 16-bit alignment
+
+ /* Do short copies byte-by-byte. */
+ _bltui a4, 6, .Lbytecopy
+
+ /* Copy 2 bytes. */
+ l8ui a6, a3, 0
+ l8ui a7, a3, 1
+ addi a3, a3, 2
+ addi a4, a4, -2
+ s8i a6, a5, 0
+ s8i a7, a5, 1
+ addi a5, a5, 2
+
+ /* dst is now aligned; return to main algorithm. */
+ j .Ldstaligned
+
+
+ENTRY (memcpy)
+ /* a2 = dst, a3 = src, a4 = len */
+
+ mov a5, a2 // copy dst so that a2 is return value
+ _bbsi.l a2, 0, .Ldst1mod2
+ _bbsi.l a2, 1, .Ldst2mod4
+.Ldstaligned:
+
+ /* Get number of loop iterations with 16B per iteration. */
+ srli a7, a4, 4
+
+ /* Check if source is aligned. */
+ movi a8, 3
+ _bany a3, a8, .Lsrcunaligned
+
+ /* Destination and source are word-aligned, use word copy. */
+#if XCHAL_HAVE_LOOPS
+ loopnez a7, 2f
+#else
+ beqz a7, 2f
+ slli a8, a7, 4
+ add a8, a8, a3 // a8 = end of last 16B source chunk
+#endif
+1: l32i a6, a3, 0
+ l32i a7, a3, 4
+ s32i a6, a5, 0
+ l32i a6, a3, 8
+ s32i a7, a5, 4
+ l32i a7, a3, 12
+ s32i a6, a5, 8
+ addi a3, a3, 16
+ s32i a7, a5, 12
+ addi a5, a5, 16
+#if !XCHAL_HAVE_LOOPS
+ blt a3, a8, 1b
+#endif
+
+ /* Copy any leftover pieces smaller than 16B. */
+2: bbci.l a4, 3, 3f
+
+ /* Copy 8 bytes. */
+ l32i a6, a3, 0
+ l32i a7, a3, 4
+ addi a3, a3, 8
+ s32i a6, a5, 0
+ s32i a7, a5, 4
+ addi a5, a5, 8
+
+3: bbsi.l a4, 2, 4f
+ bbsi.l a4, 1, 5f
+ bbsi.l a4, 0, 6f
+ retw
+
+ /* Copy 4 bytes. */
+4: l32i a6, a3, 0
+ addi a3, a3, 4
+ s32i a6, a5, 0
+ addi a5, a5, 4
+ bbsi.l a4, 1, 5f
+ bbsi.l a4, 0, 6f
+ retw
+
+ /* Copy 2 bytes. */
+5: l16ui a6, a3, 0
+ addi a3, a3, 2
+ s16i a6, a5, 0
+ addi a5, a5, 2
+ bbsi.l a4, 0, 6f
+ retw
+
+ /* Copy 1 byte. */
+6: l8ui a6, a3, 0
+ s8i a6, a5, 0
+
+.Ldone:
+ retw
+
+
+/* Destination is aligned; source is unaligned. */
+
+ .align 4
+.Lsrcunaligned:
+ /* Avoid loading anything for zero-length copies. */
+ _beqz a4, .Ldone
+
+ /* Copy 16 bytes per iteration for word-aligned dst and
+ unaligned src. */
+ ssa8 a3 // set shift amount from byte offset
+#if UNALIGNED_ADDRESSES_CHECKED
+ and a11, a3, a8 // save unalignment offset for below
+ sub a3, a3, a11 // align a3
+#endif
+ l32i a6, a3, 0 // load first word
+#if XCHAL_HAVE_LOOPS
+ loopnez a7, 2f
+#else
+ beqz a7, 2f
+ slli a10, a7, 4
+ add a10, a10, a3 // a10 = end of last 16B source chunk
+#endif
+1: l32i a7, a3, 4
+ l32i a8, a3, 8
+ src_b a6, a6, a7
+ s32i a6, a5, 0
+ l32i a9, a3, 12
+ src_b a7, a7, a8
+ s32i a7, a5, 4
+ l32i a6, a3, 16
+ src_b a8, a8, a9
+ s32i a8, a5, 8
+ addi a3, a3, 16
+ src_b a9, a9, a6
+ s32i a9, a5, 12
+ addi a5, a5, 16
+#if !XCHAL_HAVE_LOOPS
+ blt a3, a10, 1b
+#endif
+
+2: bbci.l a4, 3, 3f
+
+ /* Copy 8 bytes. */
+ l32i a7, a3, 4
+ l32i a8, a3, 8
+ src_b a6, a6, a7
+ s32i a6, a5, 0
+ addi a3, a3, 8
+ src_b a7, a7, a8
+ s32i a7, a5, 4
+ addi a5, a5, 8
+ mov a6, a8
+
+3: bbci.l a4, 2, 4f
+
+ /* Copy 4 bytes. */
+ l32i a7, a3, 4
+ addi a3, a3, 4
+ src_b a6, a6, a7
+ s32i a6, a5, 0
+ addi a5, a5, 4
+ mov a6, a7
+4:
+#if UNALIGNED_ADDRESSES_CHECKED
+ add a3, a3, a11 // readjust a3 with correct misalignment
+#endif
+ bbsi.l a4, 1, 5f
+ bbsi.l a4, 0, 6f
+ retw
+
+ /* Copy 2 bytes. */
+5: l8ui a6, a3, 0
+ l8ui a7, a3, 1
+ addi a3, a3, 2
+ s8i a6, a5, 0
+ s8i a7, a5, 1
+ addi a5, a5, 2
+ bbsi.l a4, 0, 6f
+ retw
+
+ /* Copy 1 byte. */
+6: l8ui a6, a3, 0
+ s8i a6, a5, 0
+ retw
+
+libc_hidden_def (memcpy)
--- /dev/null
+/* Optimized memset for Xtensa.
+ Copyright (C) 2001, 2007 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+#include "../../sysdeps/linux/xtensa/sysdep.h"
+#include <bits/xtensa-config.h>
+
+/* Do not use .literal_position in the ENTRY macro. */
+#undef LITERAL_POSITION
+#define LITERAL_POSITION
+
+/* void *memset (void *dst, int c, size_t length)
+
+ The algorithm is as follows:
+
+ Create a word with c in all byte positions.
+
+ If the destination is aligned, set 16B chunks with a loop, and then
+ finish up with 8B, 4B, 2B, and 1B stores conditional on the length.
+
+ If the destination is unaligned, align it by conditionally
+ setting 1B and/or 2B and then go to aligned case.
+
+ This code tries to use fall-through branches for the common
+ case of an aligned destination (except for the branches to
+ the alignment labels). */
+
+
+/* Byte-by-byte set. */
+
+ .text
+ .align 4
+ .literal_position
+__memset_aux:
+
+ /* Skip a byte to get 1 mod 4 alignment for LOOPNEZ
+ (0 mod 4 alignment for LBEG). */
+ .byte 0
+
+.Lbyteset:
+#if XCHAL_HAVE_LOOPS
+ loopnez a4, 2f
+#else
+ beqz a4, 2f
+ add a6, a5, a4 // a6 = ending address
+#endif
+1: s8i a3, a5, 0
+ addi a5, a5, 1
+#if !XCHAL_HAVE_LOOPS
+ blt a5, a6, 1b
+#endif
+2: retw
+
+
+/* Destination is unaligned. */
+
+ .align 4
+
+.Ldst1mod2: // dst is only byte aligned
+
+ /* Do short sizes byte-by-byte. */
+ bltui a4, 8, .Lbyteset
+
+ /* Set 1 byte. */
+ s8i a3, a5, 0
+ addi a5, a5, 1
+ addi a4, a4, -1
+
+ /* Now retest if dst is aligned. */
+ _bbci.l a5, 1, .Ldstaligned
+
+.Ldst2mod4: // dst has 16-bit alignment
+
+ /* Do short sizes byte-by-byte. */
+ bltui a4, 8, .Lbyteset
+
+ /* Set 2 bytes. */
+ s16i a3, a5, 0
+ addi a5, a5, 2
+ addi a4, a4, -2
+
+ /* dst is now aligned; return to main algorithm */
+ j .Ldstaligned
+
+
+ENTRY (memset)
+ /* a2 = dst, a3 = c, a4 = length */
+
+ /* Duplicate character into all bytes of word. */
+ extui a3, a3, 0, 8
+ slli a7, a3, 8
+ or a3, a3, a7
+ slli a7, a3, 16
+ or a3, a3, a7
+
+ mov a5, a2 // copy dst so that a2 is return value
+
+ /* Check if dst is unaligned. */
+ _bbsi.l a2, 0, .Ldst1mod2
+ _bbsi.l a2, 1, .Ldst2mod4
+.Ldstaligned:
+
+ /* Get number of loop iterations with 16B per iteration. */
+ srli a7, a4, 4
+
+ /* Destination is word-aligned. */
+#if XCHAL_HAVE_LOOPS
+ loopnez a7, 2f
+#else
+ beqz a7, 2f
+ slli a6, a7, 4
+ add a6, a6, a5 // a6 = end of last 16B chunk
+#endif
+ /* Set 16 bytes per iteration. */
+1: s32i a3, a5, 0
+ s32i a3, a5, 4
+ s32i a3, a5, 8
+ s32i a3, a5, 12
+ addi a5, a5, 16
+#if !XCHAL_HAVE_LOOPS
+ blt a5, a6, 1b
+#endif
+
+ /* Set any leftover pieces smaller than 16B. */
+2: bbci.l a4, 3, 3f
+
+ /* Set 8 bytes. */
+ s32i a3, a5, 0
+ s32i a3, a5, 4
+ addi a5, a5, 8
+
+3: bbci.l a4, 2, 4f
+
+ /* Set 4 bytes. */
+ s32i a3, a5, 0
+ addi a5, a5, 4
+
+4: bbci.l a4, 1, 5f
+
+ /* Set 2 bytes. */
+ s16i a3, a5, 0
+ addi a5, a5, 2
+
+5: bbci.l a4, 0, 6f
+
+ /* Set 1 byte. */
+ s8i a3, a5, 0
+6: retw
+
+libc_hidden_def (memset)
--- /dev/null
+/* Optimized strcmp for Xtensa.
+ Copyright (C) 2001, 2007 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+#include "../../sysdeps/linux/xtensa/sysdep.h"
+#include <bits/xtensa-config.h>
+
+#ifdef __XTENSA_EB__
+#define MASK0 0xff000000
+#define MASK1 0x00ff0000
+#define MASK2 0x0000ff00
+#define MASK3 0x000000ff
+#else
+#define MASK0 0x000000ff
+#define MASK1 0x0000ff00
+#define MASK2 0x00ff0000
+#define MASK3 0xff000000
+#endif
+
+#define MASK4 0x40404040
+
+ .literal .Lmask0, MASK0
+ .literal .Lmask1, MASK1
+ .literal .Lmask2, MASK2
+ .literal .Lmask3, MASK3
+ .literal .Lmask4, MASK4
+
+ .text
+ENTRY (strcmp)
+ /* a2 = s1, a3 = s2 */
+
+ l8ui a8, a2, 0 // byte 0 from s1
+ l8ui a9, a3, 0 // byte 0 from s2
+ movi a10, 3 // mask
+ bne a8, a9, .Lretdiff
+
+ or a11, a2, a3
+ bnone a11, a10, .Laligned
+
+ xor a11, a2, a3 // compare low two bits of s1 and s2
+ bany a11, a10, .Lunaligned // if they have different alignment
+
+ /* s1/s2 are not word-aligned. */
+ addi a2, a2, 1 // advance s1
+ beqz a8, .Leq // bytes equal, if zero, strings are equal
+ addi a3, a3, 1 // advance s2
+ bnone a2, a10, .Laligned // if s1/s2 now aligned
+ l8ui a8, a2, 0 // byte 1 from s1
+ l8ui a9, a3, 0 // byte 1 from s2
+ addi a2, a2, 1 // advance s1
+ bne a8, a9, .Lretdiff // if different, return difference
+ beqz a8, .Leq // bytes equal, if zero, strings are equal
+ addi a3, a3, 1 // advance s2
+ bnone a2, a10, .Laligned // if s1/s2 now aligned
+ l8ui a8, a2, 0 // byte 2 from s1
+ l8ui a9, a3, 0 // byte 2 from s2
+ addi a2, a2, 1 // advance s1
+ bne a8, a9, .Lretdiff // if different, return difference
+ beqz a8, .Leq // bytes equal, if zero, strings are equal
+ addi a3, a3, 1 // advance s2
+ j .Laligned
+
+/* s1 and s2 have different alignment.
+
+ If the zero-overhead loop option is available, use an (almost)
+ infinite zero-overhead loop with conditional exits so we only pay
+ for taken branches when exiting the loop.
+
+ Note: It is important for this unaligned case to come before the
+ code for aligned strings, because otherwise some of the branches
+ above cannot reach and have to be transformed to branches around
+ jumps. The unaligned code is smaller and the branches can reach
+ over it. */
+
+ .align 4
+ /* (2 mod 4) alignment for loop instruction */
+.Lunaligned:
+#if XCHAL_HAVE_LOOPS
+ _movi.n a8, 0 // set up for the maximum loop count
+ loop a8, .Lretdiff // loop forever (almost anyway)
+#endif
+.Lnextbyte:
+ l8ui a8, a2, 0
+ l8ui a9, a3, 0
+ addi a2, a2, 1
+ bne a8, a9, .Lretdiff
+ addi a3, a3, 1
+#if XCHAL_HAVE_LOOPS
+ beqz a8, .Lretdiff
+#else
+ bnez a8, .Lnextbyte
+#endif
+.Lretdiff:
+ sub a2, a8, a9
+ retw
+
+/* s1 is word-aligned; s2 is word-aligned.
+
+ If the zero-overhead loop option is available, use an (almost)
+ infinite zero-overhead loop with conditional exits so we only pay
+ for taken branches when exiting the loop. */
+
+/* New algorithm, relying on the fact that all normal ASCII is between
+ 32 and 127.
+
+ Rather than check all bytes for zero:
+ Take one word (4 bytes). Call it w1.
+ Shift w1 left by one into w1'.
+ Or w1 and w1'. For all normal ASCII bit 6 will be 1; for zero it won't.
+ Check that all 4 bit 6's (one for each byte) are one:
+ If they are, we are definitely not done.
+ If they are not, we are probably done, but need to check for zero. */
+
+ .align 4
+#if XCHAL_HAVE_LOOPS
+.Laligned:
+ .begin no-transform
+ l32r a4, .Lmask0 // mask for byte 0
+ l32r a7, .Lmask4
+ /* Loop forever. (a4 is more than than the maximum number
+ of iterations) */
+ loop a4, .Laligned_done
+
+ /* First unrolled loop body. */
+ l32i a8, a2, 0 // get word from s1
+ l32i a9, a3, 0 // get word from s2
+ slli a5, a8, 1
+ bne a8, a9, .Lwne2
+ or a9, a8, a5
+ bnall a9, a7, .Lprobeq
+
+ /* Second unrolled loop body. */
+ l32i a8, a2, 4 // get word from s1+4
+ l32i a9, a3, 4 // get word from s2+4
+ slli a5, a8, 1
+ bne a8, a9, .Lwne2
+ or a9, a8, a5
+ bnall a9, a7, .Lprobeq2
+
+ addi a2, a2, 8 // advance s1 pointer
+ addi a3, a3, 8 // advance s2 pointer
+.Laligned_done:
+ or a1, a1, a1 // nop
+
+.Lprobeq2:
+ /* Adjust pointers to account for the loop unrolling. */
+ addi a2, a2, 4
+ addi a3, a3, 4
+
+#else /* !XCHAL_HAVE_LOOPS */
+
+.Laligned:
+ movi a4, MASK0 // mask for byte 0
+ movi a7, MASK4
+ j .Lfirstword
+.Lnextword:
+ addi a2, a2, 4 // advance s1 pointer
+ addi a3, a3, 4 // advance s2 pointer
+.Lfirstword:
+ l32i a8, a2, 0 // get word from s1
+ l32i a9, a3, 0 // get word from s2
+ slli a5, a8, 1
+ bne a8, a9, .Lwne2
+ or a9, a8, a5
+ ball a9, a7, .Lnextword
+#endif /* !XCHAL_HAVE_LOOPS */
+
+ /* align (0 mod 4) */
+.Lprobeq:
+ /* Words are probably equal, but check for sure.
+ If not, loop over the rest of string using normal algorithm. */
+
+ bnone a8, a4, .Leq // if byte 0 is zero
+ l32r a5, .Lmask1 // mask for byte 1
+ l32r a6, .Lmask2 // mask for byte 2
+ bnone a8, a5, .Leq // if byte 1 is zero
+ l32r a7, .Lmask3 // mask for byte 3
+ bnone a8, a6, .Leq // if byte 2 is zero
+ bnone a8, a7, .Leq // if byte 3 is zero
+ addi.n a2, a2, 4 // advance s1 pointer
+ addi.n a3, a3, 4 // advance s2 pointer
+#if XCHAL_HAVE_LOOPS
+
+ /* align (1 mod 4) */
+ loop a4, .Leq // loop forever (a4 is bigger than max iters)
+ .end no-transform
+
+ l32i a8, a2, 0 // get word from s1
+ l32i a9, a3, 0 // get word from s2
+ addi a2, a2, 4 // advance s1 pointer
+ bne a8, a9, .Lwne
+ bnone a8, a4, .Leq // if byte 0 is zero
+ bnone a8, a5, .Leq // if byte 1 is zero
+ bnone a8, a6, .Leq // if byte 2 is zero
+ bnone a8, a7, .Leq // if byte 3 is zero
+ addi a3, a3, 4 // advance s2 pointer
+
+#else /* !XCHAL_HAVE_LOOPS */
+
+ j .Lfirstword2
+.Lnextword2:
+ addi a3, a3, 4 // advance s2 pointer
+.Lfirstword2:
+ l32i a8, a2, 0 // get word from s1
+ l32i a9, a3, 0 // get word from s2
+ addi a2, a2, 4 // advance s1 pointer
+ bne a8, a9, .Lwne
+ bnone a8, a4, .Leq // if byte 0 is zero
+ bnone a8, a5, .Leq // if byte 1 is zero
+ bnone a8, a6, .Leq // if byte 2 is zero
+ bany a8, a7, .Lnextword2 // if byte 3 is zero
+#endif /* !XCHAL_HAVE_LOOPS */
+
+ /* Words are equal; some byte is zero. */
+.Leq: movi a2, 0 // return equal
+ retw
+
+.Lwne2: /* Words are not equal. On big-endian processors, if none of the
+ bytes are zero, the return value can be determined by a simple
+ comparison. */
+#ifdef __XTENSA_EB__
+ or a10, a8, a5
+ bnall a10, a7, .Lsomezero
+ bgeu a8, a9, .Lposreturn
+ movi a2, -1
+ retw
+.Lposreturn:
+ movi a2, 1
+ retw
+.Lsomezero: // There is probably some zero byte.
+#endif /* __XTENSA_EB__ */
+.Lwne: /* Words are not equal. */
+ xor a2, a8, a9 // get word with nonzero in byte that differs
+ bany a2, a4, .Ldiff0 // if byte 0 differs
+ movi a5, MASK1 // mask for byte 1
+ bnone a8, a4, .Leq // if byte 0 is zero
+ bany a2, a5, .Ldiff1 // if byte 1 differs
+ movi a6, MASK2 // mask for byte 2
+ bnone a8, a5, .Leq // if byte 1 is zero
+ bany a2, a6, .Ldiff2 // if byte 2 differs
+ bnone a8, a6, .Leq // if byte 2 is zero
+#ifdef __XTENSA_EB__
+.Ldiff3:
+.Ldiff2:
+.Ldiff1:
+ /* Byte 0 is equal (at least) and there is a difference before a zero
+ byte. Just subtract words to get the return value.
+ The high order equal bytes cancel, leaving room for the sign. */
+ sub a2, a8, a9
+ retw
+
+.Ldiff0:
+ /* Need to make room for the sign, so can't subtract whole words. */
+ extui a10, a8, 24, 8
+ extui a11, a9, 24, 8
+ sub a2, a10, a11
+ retw
+
+#else /* !__XTENSA_EB__ */
+ /* Little-endian is a little more difficult because can't subtract
+ whole words. */
+.Ldiff3:
+ /* Bytes 0-2 are equal; byte 3 is different.
+ For little-endian need to have a sign bit for the difference. */
+ extui a10, a8, 24, 8
+ extui a11, a9, 24, 8
+ sub a2, a10, a11
+ retw
+
+.Ldiff0:
+ /* Byte 0 is different. */
+ extui a10, a8, 0, 8
+ extui a11, a9, 0, 8
+ sub a2, a10, a11
+ retw
+
+.Ldiff1:
+ /* Byte 0 is equal; byte 1 is different. */
+ extui a10, a8, 8, 8
+ extui a11, a9, 8, 8
+ sub a2, a10, a11
+ retw
+
+.Ldiff2:
+ /* Bytes 0-1 are equal; byte 2 is different. */
+ extui a10, a8, 16, 8
+ extui a11, a9, 16, 8
+ sub a2, a10, a11
+ retw
+
+#endif /* !__XTENSA_EB */
+
+libc_hidden_def (strcmp)
+
+#ifndef __UCLIBC_HAS_LOCALE__
+strong_alias (strcmp, strcoll)
+libc_hidden_def (strcoll)
+#endif
--- /dev/null
+/* Optimized strcpy for Xtensa.
+ Copyright (C) 2001, 2007 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+#include "../../sysdeps/linux/xtensa/sysdep.h"
+#include <bits/xtensa-config.h>
+
+#ifdef __XTENSA_EB__
+#define MASK0 0xff000000
+#define MASK1 0x00ff0000
+#define MASK2 0x0000ff00
+#define MASK3 0x000000ff
+#else
+#define MASK0 0x000000ff
+#define MASK1 0x0000ff00
+#define MASK2 0x00ff0000
+#define MASK3 0xff000000
+#endif
+
+ .text
+ENTRY (strcpy)
+ /* a2 = dst, a3 = src */
+
+ mov a10, a2 // leave dst in return value register
+ movi a4, MASK0
+ movi a5, MASK1
+ movi a6, MASK2
+ movi a7, MASK3
+ bbsi.l a3, 0, .Lsrc1mod2
+ bbsi.l a3, 1, .Lsrc2mod4
+.Lsrcaligned:
+
+ /* Check if the destination is aligned. */
+ movi a8, 3
+ bnone a10, a8, .Laligned
+
+ j .Ldstunaligned
+
+.Lsrc1mod2: // src address is odd
+ l8ui a8, a3, 0 // get byte 0
+ addi a3, a3, 1 // advance src pointer
+ s8i a8, a10, 0 // store byte 0
+ beqz a8, 1f // if byte 0 is zero
+ addi a10, a10, 1 // advance dst pointer
+ bbci.l a3, 1, .Lsrcaligned // if src is now word-aligned
+
+.Lsrc2mod4: // src address is 2 mod 4
+ l8ui a8, a3, 0 // get byte 0
+ /* 1-cycle interlock */
+ s8i a8, a10, 0 // store byte 0
+ beqz a8, 1f // if byte 0 is zero
+ l8ui a8, a3, 1 // get byte 0
+ addi a3, a3, 2 // advance src pointer
+ s8i a8, a10, 1 // store byte 0
+ addi a10, a10, 2 // advance dst pointer
+ bnez a8, .Lsrcaligned
+1: retw
+
+
+/* dst is word-aligned; src is word-aligned. */
+
+ .align 4
+#if XCHAL_HAVE_LOOPS
+ /* (2 mod 4) alignment for loop instruction */
+.Laligned:
+ _movi.n a8, 0 // set up for the maximum loop count
+ loop a8, .Lz3 // loop forever (almost anyway)
+ l32i a8, a3, 0 // get word from src
+ addi a3, a3, 4 // advance src pointer
+ bnone a8, a4, .Lz0 // if byte 0 is zero
+ bnone a8, a5, .Lz1 // if byte 1 is zero
+ bnone a8, a6, .Lz2 // if byte 2 is zero
+ s32i a8, a10, 0 // store word to dst
+ bnone a8, a7, .Lz3 // if byte 3 is zero
+ addi a10, a10, 4 // advance dst pointer
+
+#else /* !XCHAL_HAVE_LOOPS */
+
+1: addi a10, a10, 4 // advance dst pointer
+.Laligned:
+ l32i a8, a3, 0 // get word from src
+ addi a3, a3, 4 // advance src pointer
+ bnone a8, a4, .Lz0 // if byte 0 is zero
+ bnone a8, a5, .Lz1 // if byte 1 is zero
+ bnone a8, a6, .Lz2 // if byte 2 is zero
+ s32i a8, a10, 0 // store word to dst
+ bany a8, a7, 1b // if byte 3 is zero
+#endif /* !XCHAL_HAVE_LOOPS */
+
+.Lz3: /* Byte 3 is zero. */
+ retw
+
+.Lz0: /* Byte 0 is zero. */
+#ifdef __XTENSA_EB__
+ movi a8, 0
+#endif
+ s8i a8, a10, 0
+ retw
+
+.Lz1: /* Byte 1 is zero. */
+#ifdef __XTENSA_EB__
+ extui a8, a8, 16, 16
+#endif
+ s16i a8, a10, 0
+ retw
+
+.Lz2: /* Byte 2 is zero. */
+#ifdef __XTENSA_EB__
+ extui a8, a8, 16, 16
+#endif
+ s16i a8, a10, 0
+ movi a8, 0
+ s8i a8, a10, 2
+ retw
+
+ .align 4
+ /* (2 mod 4) alignment for loop instruction */
+.Ldstunaligned:
+
+#if XCHAL_HAVE_LOOPS
+ _movi.n a8, 0 // set up for the maximum loop count
+ loop a8, 2f // loop forever (almost anyway)
+#endif
+1: l8ui a8, a3, 0
+ addi a3, a3, 1
+ s8i a8, a10, 0
+ addi a10, a10, 1
+#if XCHAL_HAVE_LOOPS
+ beqz a8, 2f
+#else
+ bnez a8, 1b
+#endif
+2: retw
+
+libc_hidden_def (strcpy)
--- /dev/null
+/* Optimized strlen for Xtensa.
+ Copyright (C) 2001, 2007 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+#include "../../sysdeps/linux/xtensa/sysdep.h"
+#include <bits/xtensa-config.h>
+
+#ifdef __XTENSA_EB__
+#define MASK0 0xff000000
+#define MASK1 0x00ff0000
+#define MASK2 0x0000ff00
+#define MASK3 0x000000ff
+#else
+#define MASK0 0x000000ff
+#define MASK1 0x0000ff00
+#define MASK2 0x00ff0000
+#define MASK3 0xff000000
+#endif
+
+ .text
+ENTRY (strlen)
+ /* a2 = s */
+
+ addi a3, a2, -4 // because we overincrement at the end
+ movi a4, MASK0
+ movi a5, MASK1
+ movi a6, MASK2
+ movi a7, MASK3
+ bbsi.l a2, 0, .L1mod2
+ bbsi.l a2, 1, .L2mod4
+ j .Laligned
+
+.L1mod2: // address is odd
+ l8ui a8, a3, 4 // get byte 0
+ addi a3, a3, 1 // advance string pointer
+ beqz a8, .Lz3 // if byte 0 is zero
+ bbci.l a3, 1, .Laligned // if string pointer is now word-aligned
+
+.L2mod4: // address is 2 mod 4
+ addi a3, a3, 2 // advance ptr for aligned access
+ l32i a8, a3, 0 // get word with first two bytes of string
+ bnone a8, a6, .Lz2 // if byte 2 (of word, not string) is zero
+ bany a8, a7, .Laligned // if byte 3 (of word, not string) is nonzero
+
+ /* Byte 3 is zero. */
+ addi a3, a3, 3 // point to zero byte
+ sub a2, a3, a2 // subtract to get length
+ retw
+
+
+/* String is word-aligned. */
+
+ .align 4
+ /* (2 mod 4) alignment for loop instruction */
+.Laligned:
+#if XCHAL_HAVE_LOOPS
+ _movi.n a8, 0 // set up for the maximum loop count
+ loop a8, .Lz3 // loop forever (almost anyway)
+#endif
+1: l32i a8, a3, 4 // get next word of string
+ addi a3, a3, 4 // advance string pointer
+ bnone a8, a4, .Lz0 // if byte 0 is zero
+ bnone a8, a5, .Lz1 // if byte 1 is zero
+ bnone a8, a6, .Lz2 // if byte 2 is zero
+#if XCHAL_HAVE_LOOPS
+ bnone a8, a7, .Lz3 // if byte 3 is zero
+#else
+ bany a8, a7, 1b // repeat if byte 3 is non-zero
+#endif
+
+.Lz3: /* Byte 3 is zero. */
+ addi a3, a3, 3 // point to zero byte
+ /* Fall through.... */
+
+.Lz0: /* Byte 0 is zero. */
+ sub a2, a3, a2 // subtract to get length
+ retw
+
+.Lz1: /* Byte 1 is zero. */
+ addi a3, a3, 1 // point to zero byte
+ sub a2, a3, a2 // subtract to get length
+ retw
+
+.Lz2: /* Byte 2 is zero. */
+ addi a3, a3, 2 // point to zero byte
+ sub a2, a3, a2 // subtract to get length
+ retw
+
+libc_hidden_def (strlen)
--- /dev/null
+/* Optimized strcpy for Xtensa.
+ Copyright (C) 2001, 2007 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+#include "../../sysdeps/linux/xtensa/sysdep.h"
+#include <bits/xtensa-config.h>
+
+#ifdef __XTENSA_EB__
+#define MASK0 0xff000000
+#define MASK1 0x00ff0000
+#define MASK2 0x0000ff00
+#define MASK3 0x000000ff
+#else
+#define MASK0 0x000000ff
+#define MASK1 0x0000ff00
+#define MASK2 0x00ff0000
+#define MASK3 0xff000000
+#endif
+
+/* Do not use .literal_position in the ENTRY macro. */
+#undef LITERAL_POSITION
+#define LITERAL_POSITION
+
+ .text
+ .align 4
+ .literal_position
+__strncpy_aux:
+
+.Lsrc1mod2: // src address is odd
+ l8ui a8, a3, 0 // get byte 0
+ addi a3, a3, 1 // advance src pointer
+ s8i a8, a10, 0 // store byte 0
+ addi a4, a4, -1 // decrement n
+ beqz a4, .Lret // if n is zero
+ addi a10, a10, 1 // advance dst pointer
+ beqz a8, .Lfill // if byte 0 is zero
+ bbci.l a3, 1, .Lsrcaligned // if src is now word-aligned
+
+.Lsrc2mod4: // src address is 2 mod 4
+ l8ui a8, a3, 0 // get byte 0
+ addi a4, a4, -1 // decrement n
+ s8i a8, a10, 0 // store byte 0
+ beqz a4, .Lret // if n is zero
+ addi a10, a10, 1 // advance dst pointer
+ beqz a8, .Lfill // if byte 0 is zero
+ l8ui a8, a3, 1 // get byte 0
+ addi a3, a3, 2 // advance src pointer
+ s8i a8, a10, 0 // store byte 0
+ addi a4, a4, -1 // decrement n
+ beqz a4, .Lret // if n is zero
+ addi a10, a10, 1 // advance dst pointer
+ bnez a8, .Lsrcaligned
+ j .Lfill
+
+.Lret:
+ retw
+
+
+ENTRY (strncpy)
+ /* a2 = dst, a3 = src */
+
+ mov a10, a2 // leave dst in return value register
+ beqz a4, .Lret // if n is zero
+
+ movi a11, MASK0
+ movi a5, MASK1
+ movi a6, MASK2
+ movi a7, MASK3
+ bbsi.l a3, 0, .Lsrc1mod2
+ bbsi.l a3, 1, .Lsrc2mod4
+.Lsrcaligned:
+
+ /* Check if the destination is aligned. */
+ movi a8, 3
+ bnone a10, a8, .Laligned
+
+ j .Ldstunaligned
+
+
+/* Fill the dst with zeros -- n is at least 1. */
+
+.Lfill:
+ movi a9, 0
+ bbsi.l a10, 0, .Lfill1mod2
+ bbsi.l a10, 1, .Lfill2mod4
+.Lfillaligned:
+ blti a4, 4, .Lfillcleanup
+
+ /* Loop filling complete words with zero. */
+#if XCHAL_HAVE_LOOPS
+
+ srai a8, a4, 2
+ loop a8, 1f
+ s32i a9, a10, 0
+ addi a10, a10, 4
+
+1: slli a8, a8, 2
+ sub a4, a4, a8
+
+#else /* !XCHAL_HAVE_LOOPS */
+
+1: s32i a9, a10, 0
+ addi a10, a10, 4
+ addi a4, a4, -4
+ bgei a4, 4, 1b
+
+#endif /* !XCHAL_HAVE_LOOPS */
+
+ beqz a4, 2f
+
+.Lfillcleanup:
+ /* Fill leftover (1 to 3) bytes with zero. */
+ s8i a9, a10, 0 // store byte 0
+ addi a4, a4, -1 // decrement n
+ addi a10, a10, 1
+ bnez a4, .Lfillcleanup
+
+2: retw
+
+.Lfill1mod2: // dst address is odd
+ s8i a9, a10, 0 // store byte 0
+ addi a4, a4, -1 // decrement n
+ beqz a4, 2b // if n is zero
+ addi a10, a10, 1 // advance dst pointer
+ bbci.l a10, 1, .Lfillaligned // if dst is now word-aligned
+
+.Lfill2mod4: // dst address is 2 mod 4
+ s8i a9, a10, 0 // store byte 0
+ addi a4, a4, -1 // decrement n
+ beqz a4, 2b // if n is zero
+ s8i a9, a10, 1 // store byte 1
+ addi a4, a4, -1 // decrement n
+ beqz a4, 2b // if n is zero
+ addi a10, a10, 2 // advance dst pointer
+ j .Lfillaligned
+
+
+/* dst is word-aligned; src is word-aligned; n is at least 1. */
+
+ .align 4
+ /* (2 mod 4) alignment for loop instruction */
+.Laligned:
+#if XCHAL_HAVE_LOOPS
+ _movi.n a8, 0 // set up for the maximum loop count
+ loop a8, 1f // loop forever (almost anyway)
+ blti a4, 5, .Ldstunaligned // n is near limit; do one at a time
+ l32i a8, a3, 0 // get word from src
+ addi a3, a3, 4 // advance src pointer
+ bnone a8, a11, .Lz0 // if byte 0 is zero
+ bnone a8, a5, .Lz1 // if byte 1 is zero
+ bnone a8, a6, .Lz2 // if byte 2 is zero
+ s32i a8, a10, 0 // store word to dst
+ addi a4, a4, -4 // decrement n
+ addi a10, a10, 4 // advance dst pointer
+ bnone a8, a7, .Lfill // if byte 3 is zero
+1:
+
+#else /* !XCHAL_HAVE_LOOPS */
+
+1: blti a4, 5, .Ldstunaligned // n is near limit; do one at a time
+ l32i a8, a3, 0 // get word from src
+ addi a3, a3, 4 // advance src pointer
+ bnone a8, a11, .Lz0 // if byte 0 is zero
+ bnone a8, a5, .Lz1 // if byte 1 is zero
+ bnone a8, a6, .Lz2 // if byte 2 is zero
+ s32i a8, a10, 0 // store word to dst
+ addi a4, a4, -4 // decrement n
+ addi a10, a10, 4 // advance dst pointer
+ bany a8, a7, 1b // no zeroes
+#endif /* !XCHAL_HAVE_LOOPS */
+
+ j .Lfill
+
+.Lz0: /* Byte 0 is zero. */
+#ifdef __XTENSA_EB__
+ movi a8, 0
+#endif
+ s8i a8, a10, 0
+ addi a4, a4, -1 // decrement n
+ addi a10, a10, 1 // advance dst pointer
+ j .Lfill
+
+.Lz1: /* Byte 1 is zero. */
+#ifdef __XTENSA_EB__
+ extui a8, a8, 16, 16
+#endif
+ s16i a8, a10, 0
+ addi a4, a4, -2 // decrement n
+ addi a10, a10, 2 // advance dst pointer
+ j .Lfill
+
+.Lz2: /* Byte 2 is zero. */
+#ifdef __XTENSA_EB__
+ extui a8, a8, 16, 16
+#endif
+ s16i a8, a10, 0
+ movi a8, 0
+ s8i a8, a10, 2
+ addi a4, a4, -3 // decrement n
+ addi a10, a10, 3 // advance dst pointer
+ j .Lfill
+
+ .align 4
+ /* (2 mod 4) alignment for loop instruction */
+.Ldstunaligned:
+
+#if XCHAL_HAVE_LOOPS
+ _movi.n a8, 0 // set up for the maximum loop count
+ loop a8, 2f // loop forever (almost anyway)
+#endif
+1: l8ui a8, a3, 0
+ addi a3, a3, 1
+ s8i a8, a10, 0
+ addi a4, a4, -1
+ beqz a4, 3f
+ addi a10, a10, 1
+#if XCHAL_HAVE_LOOPS
+ beqz a8, 2f
+#else
+ bnez a8, 1b
+#endif
+2: j .Lfill
+
+3: retw
+
+libc_hidden_def (strncpy)
--- /dev/null
+# Makefile for uClibc
+#
+# Copyright (C) 2000-2005 Erik Andersen <andersen@uclibc.org>
+#
+# Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+#
+
+top_srcdir=../../../../
+top_builddir=../../../../
+all: objs
+include $(top_builddir)Rules.mak
+include Makefile.arch
+include $(top_srcdir)Makerules
--- /dev/null
+# Makefile for uClibc
+#
+# Copyright (C) 2007 Tensilica Inc.
+#
+# Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+#
+
+CSRC := brk.c fork.c posix_fadvise.c posix_fadvise64.c pread_write.c \
+ __syscall_error.c
+
+SSRC := bsd-_setjmp.S bsd-setjmp.S setjmp.S clone.S \
+ syscall.S mmap.S windowspill.S __longjmp.S vfork.S
+
+include $(top_srcdir)libc/sysdeps/linux/Makefile.commonarch
--- /dev/null
+/* longjmp for Xtensa Processors.
+
+ Copyright (C) 2001, 2007 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+/* This implementation relies heavily on the Xtensa register window
+ mechanism. Setjmp flushes all the windows except its own to the
+ stack and then copies registers from the save areas on the stack
+ into the jmp_buf structure, along with the return address of the call
+ to setjmp. Longjmp invalidates all the windows except its own, and
+ then sets things up so that it will return to the right place,
+ using a window underflow to automatically restore the registers.
+
+ Note that it would probably be sufficient to only copy the
+ registers from setjmp's caller into jmp_buf. However, we also copy
+ the save area located at the stack pointer of setjmp's caller.
+ This save area will typically remain intact until the longjmp call.
+ The one exception is when there is an intervening alloca in
+ setjmp's caller. This is certainly an unusual situation and is
+ likely to cause problems in any case (the storage allocated on the
+ stack cannot be safely accessed following the longjmp). As bad as
+ it is, on most systems this situation would not necessarily lead to
+ a catastrophic failure. If we did not preserve the extra save area
+ on Xtensa, however, it would. When setjmp's caller returns after a
+ longjmp, there will be a window underflow; an invalid return
+ address or stack pointer in the save area will almost certainly
+ lead to a crash. Keeping a copy of the extra save area in the
+ jmp_buf avoids this with only a small additional cost. If setjmp
+ and longjmp are ever time-critical, this could be removed. */
+
+
+#include "sysdep.h"
+
+
+ENTRY (__longjmp)
+
+ /* Invalidate all but the current window. Reading and writing
+ special registers WINDOWBASE and WINDOWSTART are
+ privileged operations, so user processes must call the
+ slower __window_spill() to do the job. */
+
+ movi a4, __window_spill
+ callx4 a4
+
+ /* Return to the return address of the setjmp, using the
+ window size bits from the setjmp call so that the caller
+ will be able to find the return value that we put in a2. */
+
+ l32i a0, a2, 64
+
+ /* Copy the first 4 saved registers from jmp_buf into the save area
+ at the current sp so that the values will be restored to registers
+ when longjmp returns. */
+
+ addi a7, a1, -16
+ l32i a4, a2, 0
+ l32i a5, a2, 4
+ s32i a4, a7, 0
+ s32i a5, a7, 4
+ l32i a4, a2, 8
+ l32i a5, a2, 12
+ s32i a4, a7, 8
+ s32i a5, a7, 12
+
+ /* Copy the remaining 0-8 saved registers. */
+ extui a7, a0, 30, 2
+ blti a7, 2, .Lendlj
+ l32i a8, a2, 52
+ slli a4, a7, 4
+ sub a6, a8, a4
+ addi a5, a2, 16
+ addi a8, a8, -16 // a8 = end of register overflow area
+.Lljloop:
+ l32i a7, a5, 0
+ l32i a4, a5, 4
+ s32i a7, a6, 0
+ s32i a4, a6, 4
+ l32i a7, a5, 8
+ l32i a4, a5, 12
+ s32i a7, a6, 8
+ s32i a4, a6, 12
+ addi a5, a5, 16
+ addi a6, a6, 16
+ blt a6, a8, .Lljloop
+.Lendlj:
+
+ /* The 4 words saved from the register save area at the target's
+ sp are copied back to the target procedure's save area. The
+ only point of this is to prevent a catastrophic failure in
+ case the contents were moved by an alloca after calling
+ setjmp. This is a bit paranoid but it doesn't cost much. */
+
+ l32i a7, a2, 4 // load the target stack pointer
+ addi a7, a7, -16 // find the destination save area
+ l32i a4, a2, 48
+ l32i a5, a2, 52
+ s32i a4, a7, 0
+ s32i a5, a7, 4
+ l32i a4, a2, 56
+ l32i a5, a2, 60
+ s32i a4, a7, 8
+ s32i a5, a7, 12
+
+ /* Return v ? v : 1. */
+ movi a2, 1
+ movnez a2, a3, a3
+
+ retw
+END (__longjmp)
+
+libc_hidden_def (__longjmp)
--- /dev/null
+/* Wrapper for setting errno.
+ *
+ * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#include <errno.h>
+#include <features.h>
+
+/* This routine is jumped to by all the syscall handlers, to stash
+ * an error number into errno. */
+int __syscall_error(int err_no) attribute_hidden;
+int __syscall_error(int err_no)
+{
+ __set_errno(-err_no);
+ return -1;
+}
--- /dev/null
+#ifndef _ENDIAN_H
+# error "Never use <bits/endian.h> directly; include <endian.h> instead."
+#endif
+
+/* Xtensa can be either big or little endian. */
+#ifdef __XTENSA_EB__
+# define __BYTE_ORDER __BIG_ENDIAN
+#else
+# define __BYTE_ORDER __LITTLE_ENDIAN
+#endif
--- /dev/null
+/* O_*, F_*, FD_* bit values for Linux.
+ Copyright (C) 1995, 1996, 1997, 1998, 2000, 2004, 2007
+ Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+#ifndef _FCNTL_H
+# error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead."
+#endif
+
+#include <sys/types.h>
+#ifdef __USE_GNU
+# include <bits/uio.h>
+#endif
+
+
+/* open/fcntl - O_SYNC is only implemented on blocks devices and on files
+ located on an ext2 file system */
+#define O_ACCMODE 0003
+#define O_RDONLY 00
+#define O_WRONLY 01
+#define O_RDWR 02
+#define O_CREAT 0100 /* not fcntl */
+#define O_EXCL 0200 /* not fcntl */
+#define O_NOCTTY 0400 /* not fcntl */
+#define O_TRUNC 01000 /* not fcntl */
+#define O_APPEND 02000
+#define O_NONBLOCK 04000
+#define O_NDELAY O_NONBLOCK
+#define O_SYNC 010000
+#define O_FSYNC O_SYNC
+#define O_ASYNC 020000
+
+#ifdef __USE_GNU
+# define O_DIRECT 040000 /* Direct disk access. */
+# define O_DIRECTORY 0200000 /* Must be a directory. */
+# define O_NOFOLLOW 0400000 /* Do not follow links. */
+# define O_NOATIME 01000000 /* Do not set atime. */
+#endif
+
+/* For now Linux has synchronisity options for data and read operations.
+ We define the symbols here but let them do the same as O_SYNC since
+ this is a superset. */
+#if defined __USE_POSIX199309 || defined __USE_UNIX98
+# define O_DSYNC O_SYNC /* Synchronize data. */
+# define O_RSYNC O_SYNC /* Synchronize read operations. */
+#endif
+
+#ifdef __USE_LARGEFILE64
+# define O_LARGEFILE 0100000
+#endif
+
+/* Values for the second argument to `fcntl'. */
+#define F_DUPFD 0 /* Duplicate file descriptor. */
+#define F_GETFD 1 /* Get file descriptor flags. */
+#define F_SETFD 2 /* Set file descriptor flags. */
+#define F_GETFL 3 /* Get file status flags. */
+#define F_SETFL 4 /* Set file status flags. */
+#ifndef __USE_FILE_OFFSET64
+# define F_GETLK 5 /* Get record locking info. */
+# define F_SETLK 6 /* Set record locking info (non-blocking). */
+# define F_SETLKW 7 /* Set record locking info (blocking). */
+#else
+# define F_GETLK F_GETLK64 /* Get record locking info. */
+# define F_SETLK F_SETLK64 /* Set record locking info (non-blocking).*/
+# define F_SETLKW F_SETLKW64 /* Set record locking info (blocking). */
+#endif
+#define F_GETLK64 12 /* Get record locking info. */
+#define F_SETLK64 13 /* Set record locking info (non-blocking). */
+#define F_SETLKW64 14 /* Set record locking info (blocking). */
+
+#if defined __USE_BSD || defined __USE_UNIX98
+# define F_SETOWN 8 /* Get owner of socket (receiver of SIGIO). */
+# define F_GETOWN 9 /* Set owner of socket (receiver of SIGIO). */
+#endif
+
+#ifdef __USE_GNU
+# define F_SETSIG 10 /* Set number of signal to be sent. */
+# define F_GETSIG 11 /* Get number of signal to be sent. */
+#endif
+
+#ifdef __USE_GNU
+# define F_SETLEASE 1024 /* Set a lease. */
+# define F_GETLEASE 1025 /* Enquire what lease is active. */
+# define F_NOTIFY 1026 /* Request notfications on a directory. */
+#endif
+
+/* For F_[GET|SET]FD. */
+#define FD_CLOEXEC 1 /* actually anything with low bit set goes */
+
+/* For posix fcntl() and `l_type' field of a `struct flock' for lockf(). */
+#define F_RDLCK 0 /* Read lock. */
+#define F_WRLCK 1 /* Write lock. */
+#define F_UNLCK 2 /* Remove lock. */
+
+/* For old implementation of bsd flock(). */
+#define F_EXLCK 4 /* or 3 */
+#define F_SHLCK 8 /* or 4 */
+
+#ifdef __USE_BSD
+/* Operations for bsd flock(), also used by the kernel implementation. */
+# define LOCK_SH 1 /* shared lock */
+# define LOCK_EX 2 /* exclusive lock */
+# define LOCK_NB 4 /* or'd with one of the above to prevent
+ blocking */
+# define LOCK_UN 8 /* remove lock */
+#endif
+
+#ifdef __USE_GNU
+# define LOCK_MAND 32 /* This is a mandatory flock: */
+# define LOCK_READ 64 /* ... which allows concurrent read operations. */
+# define LOCK_WRITE 128 /* ... which allows concurrent write operations. */
+# define LOCK_RW 192 /* ... Which allows concurrent read & write operations. */
+#endif
+
+#ifdef __USE_GNU
+/* Types of directory notifications that may be requested with F_NOTIFY. */
+# define DN_ACCESS 0x00000001 /* File accessed. */
+# define DN_MODIFY 0x00000002 /* File modified. */
+# define DN_CREATE 0x00000004 /* File created. */
+# define DN_DELETE 0x00000008 /* File removed. */
+# define DN_RENAME 0x00000010 /* File renamed. */
+# define DN_ATTRIB 0x00000020 /* File changed attibutes. */
+# define DN_MULTISHOT 0x80000000 /* Don't remove notifier. */
+#endif
+
+struct flock
+ {
+ short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */
+ short int l_whence; /* Where `l_start' is relative to (like `lseek'). */
+#ifndef __USE_FILE_OFFSET64
+ __off_t l_start; /* Offset where the lock begins. */
+ __off_t l_len; /* Size of the locked area; zero means until EOF. */
+#else
+ __off64_t l_start; /* Offset where the lock begins. */
+ __off64_t l_len; /* Size of the locked area; zero means until EOF. */
+#endif
+ __pid_t l_pid; /* Process holding the lock. */
+ };
+
+#ifdef __USE_LARGEFILE64
+struct flock64
+ {
+ short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */
+ short int l_whence; /* Where `l_start' is relative to (like `lseek'). */
+ __off64_t l_start; /* Offset where the lock begins. */
+ __off64_t l_len; /* Size of the locked area; zero means until EOF. */
+ __pid_t l_pid; /* Process holding the lock. */
+ };
+#endif
+
+/* Define some more compatibility macros to be backward compatible with
+ BSD systems which did not managed to hide these kernel macros. */
+#ifdef __USE_BSD
+# define FAPPEND O_APPEND
+# define FFSYNC O_FSYNC
+# define FASYNC O_ASYNC
+# define FNONBLOCK O_NONBLOCK
+# define FNDELAY O_NDELAY
+#endif /* Use BSD. */
+
+/* Advise to `posix_fadvise'. */
+#ifdef __USE_XOPEN2K
+# define POSIX_FADV_NORMAL 0 /* No further special treatment. */
+# define POSIX_FADV_RANDOM 1 /* Expect random page references. */
+# define POSIX_FADV_SEQUENTIAL 2 /* Expect sequential page references. */
+# define POSIX_FADV_WILLNEED 3 /* Will need these pages. */
+# define POSIX_FADV_DONTNEED 4 /* Don't need these pages. */
+# define POSIX_FADV_NOREUSE 5 /* Data will be accessed once. */
+#endif
+
+__BEGIN_DECLS
+
+#ifdef __USE_GNU
+
+/* Provide kernel hint to read ahead. */
+extern ssize_t readahead (int __fd, __off64_t __offset, size_t __count)
+ __THROW;
+
+#endif
+
+__END_DECLS
--- /dev/null
+/* Copyright (C) 1995-1999, 2000, 2005, 2007 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+#ifndef _SYS_IPC_H
+# error "Never use <bits/ipc.h> directly; include <sys/ipc.h> instead."
+#endif
+
+#include <bits/types.h>
+
+/* Mode bits for `msgget', `semget', and `shmget'. */
+#define IPC_CREAT 01000 /* Create key if key does not exist. */
+#define IPC_EXCL 02000 /* Fail if key exists. */
+#define IPC_NOWAIT 04000 /* Return error on wait. */
+
+/* Control commands for `msgctl', `semctl', and `shmctl'. */
+#define IPC_RMID 0 /* Remove identifier. */
+#define IPC_SET 1 /* Set `ipc_perm' options. */
+#define IPC_STAT 2 /* Get `ipc_perm' options. */
+#ifdef __USE_GNU
+# define IPC_INFO 3 /* See ipcs. */
+#endif
+
+/* Special key values. */
+#define IPC_PRIVATE ((__key_t) 0) /* Private key. */
+
+
+/* Data structure used to pass permission information to IPC operations. */
+struct ipc_perm
+ {
+ __key_t __key; /* Key. */
+ __uid_t uid; /* Owner's user ID. */
+ __gid_t gid; /* Owner's group ID. */
+ __uid_t cuid; /* Creator's user ID. */
+ __gid_t cgid; /* Creator's group ID. */
+ unsigned int mode; /* Read/write permission. */
+ unsigned int __seq; /* Sequence number. */
+ unsigned long int __unused1;
+ unsigned long int __unused2;
+ };
--- /dev/null
+#ifndef _BITS_STAT_STRUCT_H
+#define _BITS_STAT_STRUCT_H
+
+#ifndef _LIBC
+#error bits/kernel_stat.h is for internal uClibc use only!
+#endif
+
+/* This file provides whatever this particular arch's kernel thinks
+ * struct kernel_stat should look like... It turns out each arch has a
+ * different opinion on the subject... */
+
+#define STAT_HAVE_NSEC 1
+
+struct kernel_stat {
+ unsigned long st_dev;
+ unsigned long st_ino;
+ unsigned int st_mode;
+ unsigned int st_nlink;
+ unsigned int st_uid;
+ unsigned int st_gid;
+ unsigned long st_rdev;
+ long st_size;
+ unsigned long st_blksize;
+ unsigned long st_blocks;
+ unsigned long st_atime;
+ unsigned long st_atime_nsec;
+ unsigned long st_mtime;
+ unsigned long st_mtime_nsec;
+ unsigned long st_ctime;
+ unsigned long st_ctime_nsec;
+ unsigned long __unused4;
+ unsigned long __unused5;
+};
+
+struct kernel_stat64 {
+ unsigned long long st_dev; /* Device */
+ unsigned long long st_ino; /* File serial number */
+ unsigned int st_mode; /* File mode. */
+ unsigned int st_nlink; /* Link count. */
+ unsigned int st_uid; /* User ID of the file's owner. */
+ unsigned int st_gid; /* Group ID of the file's group. */
+ unsigned long long st_rdev; /* Device number, if device. */
+ long long st_size; /* Size of file, in bytes. */
+ unsigned long st_blksize; /* Optimal block size for I/O. */
+ unsigned long __unused2;
+ unsigned long long st_blocks; /* Number 512-byte blocks allocated. */
+ unsigned long st_atime; /* Time of last access. */
+ unsigned long st_atime_nsec;
+ unsigned long st_mtime; /* Time of last modification. */
+ unsigned long st_mtime_nsec;
+ unsigned long st_ctime; /* Time of last status change. */
+ unsigned long st_ctime_nsec;
+ unsigned long __unused4;
+ unsigned long __unused5;
+};
+
+#endif /* _BITS_STAT_STRUCT_H */
--- /dev/null
+/* Note that we use the exact same include guard #define names
+ * as asm/posix_types.h. This will avoid gratuitous conflicts
+ * with the posix_types.h kernel header, and will ensure that
+ * our private content, and not the kernel header, will win.
+ * -Erik
+ */
+#ifndef _XTENSA_POSIX_TYPES_H
+#define _XTENSA_POSIX_TYPES_H
+
+typedef unsigned long __kernel_ino_t;
+typedef unsigned int __kernel_mode_t;
+typedef unsigned long __kernel_nlink_t;
+typedef long __kernel_off_t;
+typedef int __kernel_pid_t;
+typedef unsigned short __kernel_ipc_pid_t;
+typedef unsigned int __kernel_uid_t;
+typedef unsigned int __kernel_gid_t;
+typedef unsigned int __kernel_size_t;
+typedef int __kernel_ssize_t;
+typedef long __kernel_ptrdiff_t;
+typedef long __kernel_time_t;
+typedef long __kernel_suseconds_t;
+typedef long __kernel_clock_t;
+typedef int __kernel_timer_t;
+typedef int __kernel_clockid_t;
+typedef int __kernel_daddr_t;
+typedef char * __kernel_caddr_t;
+typedef unsigned short __kernel_uid16_t;
+typedef unsigned short __kernel_gid16_t;
+typedef unsigned int __kernel_uid32_t;
+typedef unsigned int __kernel_gid32_t;
+
+typedef unsigned short __kernel_old_uid_t;
+typedef unsigned short __kernel_old_gid_t;
+typedef unsigned short __kernel_old_dev_t;
+typedef long long __kernel_loff_t;
+
+/* Beginning in 2.6 kernels, which is the first version that includes the
+ Xtensa port, __kernel_dev_t is defined in "linux/types.h" and is no longer
+ architecture-specific. It is defined here in uClibc for consistency with
+ other uClibc ports and for lack of a better place. */
+typedef unsigned int __kernel_dev_t;
+
+typedef struct {
+ int val[2];
+} __kernel_fsid_t;
+
+#endif /* _XTENSA_POSIX_TYPES_H */
--- /dev/null
+/* Copyright (C) 2000, 2001, 2004, 2007
+ Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+#if !defined _MATH_H && !defined _COMPLEX_H
+# error "Never use <bits/mathdef.h> directly; include <math.h> instead"
+#endif
+
+#if defined __USE_ISOC99 && defined _MATH_H && !defined _MATH_H_MATHDEF
+# define _MATH_H_MATHDEF 1
+
+/* Xtensa has `float' and `double' operations. */
+typedef float float_t; /* `float' expressions are evaluated as
+ `float'. */
+typedef double double_t; /* `double' expressions are evaluated as
+ `double'. */
+
+/* The values returned by `ilogb' for 0 and NaN respectively. */
+# define FP_ILOGB0 (-2147483647)
+# define FP_ILOGBNAN 2147483647
+
+#endif /* ISO C99 */
+
+#ifndef __NO_LONG_DOUBLE_MATH
+/* Signal that we do not really have a `long double'. The disables the
+ declaration of all the `long double' function variants. */
+# define __NO_LONG_DOUBLE_MATH 1
+#endif
--- /dev/null
+/* Definitions for POSIX memory map interface. Linux/Xtensa version.
+ Copyright (C) 1997, 2000, 2007 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+#ifndef _SYS_MMAN_H
+# error "Never use <bits/mman.h> directly; include <sys/mman.h> instead."
+#endif
+
+/* The following definitions basically come from the kernel headers.
+ But the kernel header is not namespace clean. */
+
+
+/* Protections are chosen from these bits, OR'd together. The
+ implementation does not necessarily support PROT_EXEC or PROT_WRITE
+ without PROT_READ. The only guarantees are that no writing will be
+ allowed without PROT_WRITE and no access will be allowed for PROT_NONE. */
+
+#define PROT_READ 0x1 /* Page can be read. */
+#define PROT_WRITE 0x2 /* Page can be written. */
+#define PROT_EXEC 0x4 /* Page can be executed. */
+#define PROT_NONE 0x0 /* Page can not be accessed. */
+#define PROT_GROWSDOWN 0x01000000 /* Extend change to start of
+ growsdown vma (mprotect only). */
+#define PROT_GROWSUP 0x02000000 /* Extend change to start of
+ growsup vma (mprotect only). */
+
+/* Sharing types (must choose one and only one of these). */
+#define MAP_SHARED 0x01 /* Share changes. */
+#define MAP_PRIVATE 0x02 /* Changes are private. */
+#ifdef __USE_MISC
+# define MAP_TYPE 0x0f /* Mask for type of mapping. */
+#endif
+
+/* Other flags. */
+#define MAP_FIXED 0x10 /* Interpret addr exactly. */
+#ifdef __USE_MISC
+# define MAP_FILE 0
+# define MAP_ANONYMOUS 0x800 /* Don't use a file. */
+# define MAP_ANON MAP_ANONYMOUS
+# define MAP_RENAME MAP_ANONYMOUS
+#endif
+
+/* These are Linux-specific. */
+#ifdef __USE_MISC
+# define MAP_GROWSDOWN 0x1000 /* Stack-like segment. */
+# define MAP_DENYWRITE 0x2000 /* ETXTBSY */
+# define MAP_EXECUTABLE 0x4000 /* Mark it as an executable. */
+# define MAP_LOCKED 0x8000 /* Lock the mapping. */
+# define MAP_NORESERVE 0x0400 /* Don't check for reservations. */
+# define MAP_POPULATE 0x10000 /* Populate (prefault) pagetables. */
+# define MAP_NONBLOCK 0x20000 /* Do not block on IO. */
+#endif
+
+/* Flags to `msync'. */
+#define MS_ASYNC 1 /* Sync memory asynchronously. */
+#define MS_SYNC 4 /* Synchronous memory sync. */
+#define MS_INVALIDATE 2 /* Invalidate the caches. */
+
+/* Flags for `mlockall'. */
+#define MCL_CURRENT 1 /* Lock all currently mapped pages. */
+#define MCL_FUTURE 2 /* Lock all additions to address
+ space. */
+
+/* Flags for `mremap'. */
+#ifdef __USE_GNU
+# define MREMAP_MAYMOVE 1
+# define MREMAP_FIXED 2
+#endif
+
+/* Advice to `madvise'. */
+#ifdef __USE_BSD
+# define MADV_NORMAL 0 /* No further special treatment. */
+# define MADV_RANDOM 1 /* Expect random page references. */
+# define MADV_SEQUENTIAL 2 /* Expect sequential page references. */
+# define MADV_WILLNEED 3 /* Will need these pages. */
+# define MADV_DONTNEED 4 /* Don't need these pages. */
+# define MADV_REMOVE 9 /* Remove these pages and resources. */
+# define MADV_DONTFORK 10 /* Do not inherit across fork. */
+# define MADV_DOFORK 11 /* Do inherit across fork. */
+#endif
+
+/* The POSIX people had to invent similar names for the same things. */
+#ifdef __USE_XOPEN2K
+# define POSIX_MADV_NORMAL 0 /* No further special treatment. */
+# define POSIX_MADV_RANDOM 1 /* Expect random page references. */
+# define POSIX_MADV_SEQUENTIAL 2 /* Expect sequential page references. */
+# define POSIX_MADV_WILLNEED 3 /* Will need these pages. */
+# define POSIX_MADV_DONTNEED 4 /* Don't need these pages. */
+#endif
--- /dev/null
+/* Copyright (C) 1995-1997, 2000, 2004, 2007 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+#ifndef _SYS_MSG_H
+# error "Never use <bits/msq.h> directly; include <sys/msg.h> instead."
+#endif
+
+#include <bits/types.h>
+
+/* Define options for message queue functions. */
+#define MSG_NOERROR 010000 /* no error if message is too big */
+#ifdef __USE_GNU
+# define MSG_EXCEPT 020000 /* recv any msg except of specified type */
+#endif
+
+/* Types used in the structure definition. */
+typedef unsigned long int msgqnum_t;
+typedef unsigned long int msglen_t;
+
+
+/* Structure of record for one message inside the kernel.
+ The type `struct msg' is opaque. */
+struct msqid_ds
+{
+ struct ipc_perm msg_perm; /* structure describing operation permission */
+#if defined (__XTENSA_EB__)
+ unsigned long int __unused1;
+ __time_t msg_stime; /* time of last msgsnd command */
+ unsigned long int __unused2;
+ __time_t msg_rtime; /* time of last msgrcv command */
+ unsigned long int __unused3;
+ __time_t msg_ctime; /* time of last change */
+#elif defined (__XTENSA_EL__)
+ __time_t msg_stime; /* time of last msgsnd command */
+ unsigned long int __unused1;
+ __time_t msg_rtime; /* time of last msgrcv command */
+ unsigned long int __unused2;
+ __time_t msg_ctime; /* time of last change */
+ unsigned long int __unused3;
+#else
+# error endian order not defined
+#endif
+ unsigned long int __msg_cbytes; /* current number of bytes on queue */
+ msgqnum_t msg_qnum; /* number of messages currently on queue */
+ msglen_t msg_qbytes; /* max number of bytes allowed on queue */
+ __pid_t msg_lspid; /* pid of last msgsnd() */
+ __pid_t msg_lrpid; /* pid of last msgrcv() */
+ unsigned long int __unused4;
+ unsigned long int __unused5;
+};
+
+#ifdef __USE_MISC
+
+# define msg_cbytes __msg_cbytes
+
+/* ipcs ctl commands */
+# define MSG_STAT 11
+# define MSG_INFO 12
+
+/* buffer for msgctl calls IPC_INFO, MSG_INFO */
+struct msginfo
+ {
+ int msgpool;
+ int msgmap;
+ int msgmax;
+ int msgmnb;
+ int msgmni;
+ int msgssz;
+ int msgtql;
+ unsigned short int msgseg;
+ };
+
+#endif /* __USE_MISC */
--- /dev/null
+/* Copyright (C) 1997, 1998, 2007 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+/* Define the machine-dependent type `jmp_buf'. Xtensa version. */
+#ifndef _BITS_SETJMP_H
+#define _BITS_SETJMP_H 1
+
+#if !defined _SETJMP_H && !defined _PTHREAD_H
+# error "Never include <bits/setjmp.h> directly; use <setjmp.h> instead."
+#endif
+
+/* The jmp_buf structure for Xtensa holds the following (where "proc"
+ is the procedure that calls setjmp): 4-12 registers from the window
+ of proc, the 4 words from the save area at proc's $sp (in case a
+ subsequent alloca in proc moves $sp), and the return address within
+ proc. Everything else is saved on the stack in the normal save areas. */
+
+#ifndef _ASM
+typedef int __jmp_buf[17];
+#endif
+
+#define JB_SP 1
+#define JB_PC 16
+
+/* Test if longjmp to JMPBUF would unwind the frame containing a local
+ variable at ADDRESS. */
+
+#define _JMPBUF_UNWINDS(jmpbuf, address) \
+ ((void *) (address) < (void *) (jmpbuf)[JB_SP])
+
+#endif /* bits/setjmp.h */
--- /dev/null
+/* Copyright (C) 1995, 1996, 1997, 2000, 2002, 2007
+ Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+#ifndef _SYS_SHM_H
+# error "Never include <bits/shm.h> directly; use <sys/shm.h> instead."
+#endif
+
+#include <bits/types.h>
+
+/* Permission flag for shmget. */
+#define SHM_R 0400 /* or S_IRUGO from <linux/stat.h> */
+#define SHM_W 0200 /* or S_IWUGO from <linux/stat.h> */
+
+/* Flags for `shmat'. */
+#define SHM_RDONLY 010000 /* attach read-only else read-write */
+#define SHM_RND 020000 /* round attach address to SHMLBA */
+#define SHM_REMAP 040000 /* take-over region on attach */
+
+/* Commands for `shmctl'. */
+#define SHM_LOCK 11 /* lock segment (root only) */
+#define SHM_UNLOCK 12 /* unlock segment (root only) */
+
+__BEGIN_DECLS
+
+/* Segment low boundary address multiple. */
+#define SHMLBA (__getpagesize ())
+extern int __getpagesize (void) __THROW __attribute__ ((__const__));
+
+
+/* Type to count number of attaches. */
+typedef unsigned long int shmatt_t;
+
+/* Data structure describing a set of semaphores. */
+struct shmid_ds
+ {
+ struct ipc_perm shm_perm; /* operation permission struct */
+ size_t shm_segsz; /* size of segment in bytes */
+#if defined (__XTENSA_EL__)
+ __time_t shm_atime; /* time of last shmat() */
+ unsigned long int __unused1;
+ __time_t shm_dtime; /* time of last shmdt() */
+ unsigned long int __unused2;
+ __time_t shm_ctime; /* time of last change by shmctl() */
+ unsigned long int __unused3;
+#elif defined (__XTENSA_EB__)
+ unsigned long int __unused1;
+ __time_t shm_atime; /* time of last shmat() */
+ unsigned long int __unused2;
+ __time_t shm_dtime; /* time of last shmdt() */
+ unsigned long int __unused3;
+ __time_t shm_ctime; /* time of last change by shmctl() */
+#else
+# error endian order not defined
+#endif
+ __pid_t shm_cpid; /* pid of creator */
+ __pid_t shm_lpid; /* pid of last shmop */
+ shmatt_t shm_nattch; /* number of current attaches */
+ unsigned long int __unused4;
+ unsigned long int __unused5;
+ };
+
+#ifdef __USE_MISC
+
+/* ipcs ctl commands */
+# define SHM_STAT 13
+# define SHM_INFO 14
+
+/* shm_mode upper byte flags */
+# define SHM_DEST 01000 /* segment will be destroyed on last detach */
+# define SHM_LOCKED 02000 /* segment will not be swapped */
+# define SHM_HUGETLB 04000 /* segment is mapped via hugetlb */
+# define SHM_NORESERVE 010000 /* don't check for reservations */
+
+struct shminfo
+ {
+ unsigned long int shmmax;
+ unsigned long int shmmin;
+ unsigned long int shmmni;
+ unsigned long int shmseg;
+ unsigned long int shmall;
+ unsigned long int __unused1;
+ unsigned long int __unused2;
+ unsigned long int __unused3;
+ unsigned long int __unused4;
+ };
+
+struct shm_info
+ {
+ int used_ids;
+ unsigned long int shm_tot; /* total allocated shm */
+ unsigned long int shm_rss; /* total resident shm */
+ unsigned long int shm_swp; /* total swapped shm */
+ unsigned long int swap_attempts;
+ unsigned long int swap_successes;
+ };
+
+#endif /* __USE_MISC */
+
+__END_DECLS
--- /dev/null
+/* Copyright (C) 2003, 2007 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+/* Also see register-dump.h, where we spill live registers to the
+ stack so that we can trace the stack backward. */
+
+#define SIGCONTEXT unsigned long _info, ucontext_t *
+#define SIGCONTEXT_EXTRA_ARGS _info,
+
+/* ANDing with 0x3fffffff clears the window-size bits.
+ Assumes TASK_SIZE = 0x40000000. */
+
+#define GET_PC(ctx) ((void *) (ctx->uc_mcontext.sc_pc & 0x3fffffff))
+#define GET_FRAME(ctx) ((void *) ctx->uc_mcontext.sc_a[1])
+#define GET_STACK(ctx) ((void *) ctx->uc_mcontext.sc_a[1])
+#define CALL_SIGHANDLER(handler, signo, ctx) \
+ (handler)((signo), SIGCONTEXT_EXTRA_ARGS (ctx))
+
--- /dev/null
+/* Copyright (C) 2000, 2007 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+/* This file contains a bit of information about the stack allocation
+ of the processor. */
+
+#ifndef _STACKINFO_H
+#define _STACKINFO_H 1
+
+/* On Xtensa the stack grows down. */
+#define _STACK_GROWS_DOWN 1
+
+#endif /* stackinfo.h */
--- /dev/null
+/* Copyright (C) 1992, 1995-2005, 2007 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+#ifndef _SYS_STAT_H
+# error "Never include <bits/stat.h> directly; use <sys/stat.h> instead."
+#endif
+
+/* Versions of the `struct stat' data structure. */
+#define _STAT_VER_KERNEL 0
+#define _STAT_VER_LINUX 1
+#define _STAT_VER _STAT_VER_LINUX
+
+/* Versions of the `xmknod' interface. */
+#define _MKNOD_VER_LINUX 0
+
+
+struct stat
+ {
+ __dev_t st_dev; /* Device. */
+#ifndef __USE_FILE_OFFSET64
+ __ino_t st_ino; /* File serial number. */
+#else
+ __ino64_t st_ino; /* File serial number. */
+#endif
+ __mode_t st_mode; /* File mode. */
+ __nlink_t st_nlink; /* Link count. */
+ __uid_t st_uid; /* User ID of the file's owner. */
+ __gid_t st_gid; /* Group ID of the file's group.*/
+ __dev_t st_rdev; /* Device number, if device. */
+#ifndef __USE_FILE_OFFSET64
+ __off_t st_size; /* Size of file, in bytes. */
+#else
+ __off64_t st_size; /* Size of file, in bytes. */
+#endif
+ __blksize_t st_blksize; /* Optimal block size for I/O. */
+
+#ifndef __USE_FILE_OFFSET64
+ __blkcnt_t st_blocks; /* Number 512-byte blocks allocated. */
+#else
+ unsigned long __pad2;
+ __blkcnt64_t st_blocks; /* Number 512-byte blocks allocated. */
+#endif
+#if 0 /*def __USE_MISC*/
+ /* Nanosecond resolution timestamps are stored in a format
+ equivalent to 'struct timespec'. This is the type used
+ whenever possible but the Unix namespace rules do not allow the
+ identifier 'timespec' to appear in the <sys/stat.h> header.
+ Therefore we have to handle the use of this header in strictly
+ standard-compliant sources special. */
+ struct timespec st_atim; /* Time of last access. */
+ struct timespec st_mtim; /* Time of last modification. */
+ struct timespec st_ctim; /* Time of last status change. */
+# define st_atime st_atim.tv_sec /* Backward compatibility. */
+# define st_mtime st_mtim.tv_sec
+# define st_ctime st_ctim.tv_sec
+#else
+ __time_t st_atime; /* Time of last access. */
+ unsigned long int st_atimensec; /* Nscecs of last access. */
+ __time_t st_mtime; /* Time of last modification. */
+ unsigned long int st_mtimensec; /* Nsecs of last modification. */
+ __time_t st_ctime; /* Time of last status change. */
+ unsigned long int st_ctimensec; /* Nsecs of last status change. */
+#endif
+ unsigned long int __unused4;
+ unsigned long int __unused5;
+ };
+
+#ifdef __USE_LARGEFILE64
+struct stat64
+ {
+ __dev_t st_dev; /* Device. */
+ __ino64_t st_ino; /* File serial number. */
+ __mode_t st_mode; /* File mode. */
+ __nlink_t st_nlink; /* Link count. */
+ __uid_t st_uid; /* User ID of the file's owner. */
+ __gid_t st_gid; /* Group ID of the file's group.*/
+ __dev_t st_rdev; /* Device number, if device. */
+ __off64_t st_size; /* Size of file, in bytes. */
+ __blksize_t st_blksize; /* Optimal block size for I/O. */
+
+ unsigned long __pad2;
+ __blkcnt64_t st_blocks; /* Number 512-byte blocks allocated. */
+#if 0 /*def __USE_MISC*/
+ /* Nanosecond resolution timestamps are stored in a format
+ equivalent to 'struct timespec'. This is the type used
+ whenever possible but the Unix namespace rules do not allow the
+ identifier 'timespec' to appear in the <sys/stat.h> header.
+ Therefore we have to handle the use of this header in strictly
+ standard-compliant sources special. */
+ struct timespec st_atim; /* Time of last access. */
+ struct timespec st_mtim; /* Time of last modification. */
+ struct timespec st_ctim; /* Time of last status change. */
+#else
+ __time_t st_atime; /* Time of last access. */
+ unsigned long int st_atimensec; /* Nscecs of last access. */
+ __time_t st_mtime; /* Time of last modification. */
+ unsigned long int st_mtimensec; /* Nsecs of last modification. */
+ __time_t st_ctime; /* Time of last status change. */
+ unsigned long int st_ctimensec; /* Nsecs of last status change. */
+#endif
+ unsigned long __unused4;
+ unsigned long __unused5;
+ };
+#endif
+
+/* Tell code we have these members. */
+#define _STATBUF_ST_BLKSIZE
+#define _STATBUF_ST_RDEV
+/* Nanosecond resolution time values are supported. */
+#define _STATBUF_ST_NSEC
+
+/* Encoding of the file mode. */
+
+#define __S_IFMT 0170000 /* These bits determine file type. */
+
+/* File types. */
+#define __S_IFDIR 0040000 /* Directory. */
+#define __S_IFCHR 0020000 /* Character device. */
+#define __S_IFBLK 0060000 /* Block device. */
+#define __S_IFREG 0100000 /* Regular file. */
+#define __S_IFIFO 0010000 /* FIFO. */
+#define __S_IFLNK 0120000 /* Symbolic link. */
+#define __S_IFSOCK 0140000 /* Socket. */
+
+/* POSIX.1b objects. Note that these macros always evaluate to zero. But
+ they do it by enforcing the correct use of the macros. */
+#define __S_TYPEISMQ(buf) ((buf)->st_mode - (buf)->st_mode)
+#define __S_TYPEISSEM(buf) ((buf)->st_mode - (buf)->st_mode)
+#define __S_TYPEISSHM(buf) ((buf)->st_mode - (buf)->st_mode)
+
+/* Protection bits. */
+
+#define __S_ISUID 04000 /* Set user ID on execution. */
+#define __S_ISGID 02000 /* Set group ID on execution. */
+#define __S_ISVTX 01000 /* Save swapped text after use (sticky). */
+#define __S_IREAD 0400 /* Read by owner. */
+#define __S_IWRITE 0200 /* Write by owner. */
+#define __S_IEXEC 0100 /* Execute by owner. */
--- /dev/null
+#ifndef _BITS_SYSCALLS_H
+#define _BITS_SYSCALLS_H
+#ifndef _SYSCALL_H
+# error "Never use <bits/syscalls.h> directly; include <sys/syscall.h> instead."
+#endif
+
+/*
+ Some of the sneaky macros in the code were taken from
+ glibc .../sysdeps/unix/sysv/linux/xtensa/sysdep.h
+*/
+
+#define SYS_ify(syscall_name) __NR_##syscall_name
+
+#ifdef __ASSEMBLER__
+
+/* The register layout upon entering the function is:
+
+ return addr stack ptr arg0, arg1, arg2, arg3, arg4, arg5
+ ----------- --------- ----------------------------------
+ a0 a1 a2, a3, a4, a5, a6, a7
+
+ (Of course a function with say 3 arguments does not have entries for
+ arguments 4, 5, and 6.)
+
+ Linux takes system-call arguments in registers. The ABI and Xtensa
+ software conventions require the system-call number in a2. We move any
+ argument that was in a2 to a7, and a7 to a8 if we have all 6 arguments.
+ Note that for improved efficiency, we do NOT shift all parameters down
+ one register to maintain the original order.
+
+ syscall number arg0, arg1, arg2, arg3, arg4, arg5
+ -------------- ----------------------------------
+ a2 a6, a3, a4, a5, a8, a9
+
+ Upon return, a2 and a3 are clobbered; all other registers are preserved. */
+
+#undef DO_CALL
+#define DO_CALL(syscall_name, nargs) \
+ DO_ARGS_##nargs \
+ movi a2, SYS_ify (syscall_name); \
+ syscall
+
+#define DO_ARGS_0
+#define DO_ARGS_1 mov a6, a2;
+#define DO_ARGS_2 mov a6, a2;
+#define DO_ARGS_3 mov a6, a2;
+#define DO_ARGS_4 mov a6, a2;
+#define DO_ARGS_5 mov a8, a6; mov a6, a2;
+#define DO_ARGS_6 mov a9, a7; mov a8, a6; mov a6, a2;
+
+#else /* not __ASSEMBLER__ */
+
+#include <errno.h>
+
+#define STR(s) #s
+#define LD_ARG(n,ar) register int _a##n asm (STR(a##n)) = (int) (ar)
+
+#define LD_ARGS_0()
+#define LD_ARGS_1(a0) LD_ARG(6,a0)
+#define LD_ARGS_2(a0,a1) LD_ARGS_1(a0); LD_ARG(3,a1)
+#define LD_ARGS_3(a0,a1,a2) LD_ARGS_2(a0,a1); LD_ARG(4,a2)
+#define LD_ARGS_4(a0,a1,a2,a3) LD_ARGS_3(a0,a1,a2); LD_ARG(5,a3)
+#define LD_ARGS_5(a0,a1,a2,a3,a4) LD_ARGS_4(a0,a1,a2,a3); LD_ARG(8,a4)
+#define LD_ARGS_6(a0,a1,a2,a3,a4,a5) LD_ARGS_5(a0,a1,a2,a3,a4); LD_ARG(9,a5)
+
+#define ASM_ARGS_0 "r"(_a2)
+#define ASM_ARGS_1 ASM_ARGS_0, "r"(_a6)
+#define ASM_ARGS_2 ASM_ARGS_1, "r"(_a3)
+#define ASM_ARGS_3 ASM_ARGS_2, "r"(_a4)
+#define ASM_ARGS_4 ASM_ARGS_3, "r"(_a5)
+#define ASM_ARGS_5 ASM_ARGS_4, "r"(_a8)
+#define ASM_ARGS_6 ASM_ARGS_5, "r"(_a9)
+
+/* Define a macro which expands into the inline wrapper code for a system
+ call. */
+
+#undef INLINE_SYSCALL
+#define INLINE_SYSCALL(name, nr, args...) \
+ ({ unsigned long resultvar = INTERNAL_SYSCALL (name, , nr, args); \
+ if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (resultvar, ), 0)) \
+ { \
+ __set_errno (INTERNAL_SYSCALL_ERRNO (resultvar, )); \
+ resultvar = (unsigned long) -1; \
+ } \
+ (long) resultvar; })
+
+#undef INTERNAL_SYSCALL_DECL
+#define INTERNAL_SYSCALL_DECL(err) do { } while (0)
+
+#define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \
+ ({ LD_ARG(2, name); \
+ LD_ARGS_##nr(args); \
+ asm volatile ("syscall\n" \
+ : "=a" (_a2) \
+ : ASM_ARGS_##nr \
+ : "memory"); \
+ (long) _a2; })
+
+#undef INTERNAL_SYSCALL
+#define INTERNAL_SYSCALL(name, err, nr, args...) \
+ INTERNAL_SYSCALL_NCS (__NR_##name, err, nr, ##args)
+
+#undef INTERNAL_SYSCALL_ERROR_P
+#define INTERNAL_SYSCALL_ERROR_P(val, err) \
+ ((unsigned long) (val) >= -4095L)
+
+#undef INTERNAL_SYSCALL_ERRNO
+#define INTERNAL_SYSCALL_ERRNO(val, err) (-(val))
+
+#define _syscall0(args...) SYSCALL_FUNC (0, args)
+#define _syscall1(args...) SYSCALL_FUNC (1, args)
+#define _syscall2(args...) SYSCALL_FUNC (2, args)
+#define _syscall3(args...) SYSCALL_FUNC (3, args)
+#define _syscall4(args...) SYSCALL_FUNC (4, args)
+#define _syscall5(args...) SYSCALL_FUNC (5, args)
+#define _syscall6(args...) SYSCALL_FUNC (6, args)
+
+#define C_DECL_ARGS_0() void
+#define C_DECL_ARGS_1(t, v) t v
+#define C_DECL_ARGS_2(t, v, args...) t v, C_DECL_ARGS_1(args)
+#define C_DECL_ARGS_3(t, v, args...) t v, C_DECL_ARGS_2(args)
+#define C_DECL_ARGS_4(t, v, args...) t v, C_DECL_ARGS_3(args)
+#define C_DECL_ARGS_5(t, v, args...) t v, C_DECL_ARGS_4(args)
+#define C_DECL_ARGS_6(t, v, args...) t v, C_DECL_ARGS_5(args)
+
+#define C_ARGS_0()
+#define C_ARGS_1(t, v) v
+#define C_ARGS_2(t, v, args...) v, C_ARGS_1 (args)
+#define C_ARGS_3(t, v, args...) v, C_ARGS_2 (args)
+#define C_ARGS_4(t, v, args...) v, C_ARGS_3 (args)
+#define C_ARGS_5(t, v, args...) v, C_ARGS_4 (args)
+#define C_ARGS_6(t, v, args...) v, C_ARGS_5 (args)
+
+#define SYSCALL_FUNC(nargs, type, name, args...) \
+type name (C_DECL_ARGS_##nargs (args)) { \
+ return (type) INLINE_SYSCALL (name, nargs, C_ARGS_##nargs (args)); \
+}
+
+#endif /* not __ASSEMBLER__ */
+#endif /* _BITS_SYSCALLS_H */
--- /dev/null
+/*
+ * Track misc arch-specific features that aren't config options
+ */
+
+#ifndef _BITS_UCLIBC_ARCH_FEATURES_H
+#define _BITS_UCLIBC_ARCH_FEATURES_H
+
+/* instruction used when calling abort() to kill yourself */
+#define __UCLIBC_ABORT_INSTRUCTION__ "ill"
+
+/* can your target use syscall6() for mmap ? */
+#define __UCLIBC_MMAP_HAS_6_ARGS__
+
+/* does your target use syscall4() for truncate64 ? (32bit arches only) */
+#undef __UCLIBC_TRUNCATE64_HAS_4_ARGS__
+
+/* does your target have a broken create_module() ? */
+#undef __UCLIBC_BROKEN_CREATE_MODULE__
+
+/* does your target have to worry about older [gs]etrlimit() ? */
+#undef __UCLIBC_HANDLE_OLDER_RLIMIT__
+
+/* does your target prefix all symbols with an _ ? */
+#define __UCLIBC_NO_UNDERSCORES__
+
+/* does your target have an asm .set ? */
+#define __UCLIBC_HAVE_ASM_SET_DIRECTIVE__
+
+/* define if target doesn't like .global */
+#undef __UCLIBC_ASM_GLOBAL_DIRECTIVE__
+
+/* define if target supports .weak */
+#define __UCLIBC_HAVE_ASM_WEAK_DIRECTIVE__
+
+/* define if target supports .weakext */
+#undef __UCLIBC_HAVE_ASM_WEAKEXT_DIRECTIVE__
+
+/* needed probably only for ppc64 */
+#undef __UCLIBC_HAVE_ASM_GLOBAL_DOT_NAME__
+
+/* define if target supports IEEE signed zero floats */
+#define __UCLIBC_HAVE_SIGNED_ZERO__
+
+#endif /* _BITS_UCLIBC_ARCH_FEATURES_H */
--- /dev/null
+/* Copyright (C) 2004 Erik Andersen
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * The GNU C Library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with the GNU C Library; if not, write to the Free
+ * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ * 02111-1307 USA.
+ */
+
+/* Supply an architecture specific value for PAGE_SIZE and friends. */
+
+#ifndef _UCLIBC_PAGE_H
+#define _UCLIBC_PAGE_H
+
+#include <bits/xtensa-config.h>
+
+/* PAGE_SHIFT determines the page size -- in this case 4096 */
+#define PAGE_SHIFT XCHAL_MMU_MIN_PTE_PAGE_SIZE
+#define PAGE_SIZE (1UL << PAGE_SHIFT)
+#define PAGE_MASK (~(PAGE_SIZE-1))
+
+#endif /* _UCLIBC_PAGE_H */
--- /dev/null
+/* Copyright (C) 1999 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#define __WORDSIZE 32
--- /dev/null
+/* Xtensa configuration settings.
+ Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
+ Free Software Foundation, Inc.
+ Contributed by Bob Wilson (bwilson@tensilica.com) at Tensilica.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+#ifndef XTENSA_CONFIG_H
+#define XTENSA_CONFIG_H
+
+/* The macros defined here match those with the same names in the Xtensa
+ compile-time HAL (Hardware Abstraction Layer). Please refer to the
+ Xtensa System Software Reference Manual for documentation of these
+ macros. */
+
+/* The following macros reflect the default expectations for Xtensa
+ processor configurations that can run glibc. If you want to try
+ building glibc for an Xtensa configuration that is missing these
+ options, you will at least need to change the values of these
+ macros. */
+
+#undef XCHAL_HAVE_NSA
+#define XCHAL_HAVE_NSA 1
+
+#undef XCHAL_HAVE_LOOPS
+#define XCHAL_HAVE_LOOPS 1
+
+/* Assume the maximum number of AR registers. This currently only affects
+ the __window_spill function, and it is always safe to flush extra. */
+
+#undef XCHAL_NUM_AREGS
+#define XCHAL_NUM_AREGS 64
+
+/* Set a default page size. This is currently needed when bootstrapping
+ the runtime linker. See comments in dl-machine.h where this is used. */
+
+#undef XCHAL_MMU_MIN_PTE_PAGE_SIZE
+#define XCHAL_MMU_MIN_PTE_PAGE_SIZE 12
+
+#endif /* !XTENSA_CONFIG_H */
--- /dev/null
+/* brk system call for Linux/Xtensa.
+ Copyright (C) 1996, 1997, 2005, 2007 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+#include <errno.h>
+#include <unistd.h>
+#include <sys/syscall.h>
+
+/* This must be initialized data because commons can't have aliases. */
+void *__curbrk attribute_hidden = 0;
+
+libc_hidden_proto(brk)
+int
+brk (void *addr)
+{
+ void *newbrk;
+
+ __curbrk = newbrk = (void *) INLINE_SYSCALL (brk, 1, addr);
+
+ if (newbrk < addr)
+ {
+ __set_errno (ENOMEM);
+ return -1;
+ }
+
+ return 0;
+}
+libc_hidden_def(brk)
--- /dev/null
+/* _setjmp is in setjmp.S */
--- /dev/null
+/* setjmp is in setjmp.S */
--- /dev/null
+/* Copyright (C) 2001, 2005, 2007 Free Software Foundation, Inc.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+/* clone is even more special than fork as it mucks with stacks
+ and invokes a function in the right context after it's all over. */
+
+#include "sysdep.h"
+#include <sys/syscall.h>
+#define _ERRNO_H 1
+#include <bits/errno.h>
+
+/* int clone (a2 = int (*fn)(void *arg),
+ a3 = void *child_stack,
+ a4 = int flags,
+ a5 = void *arg,
+ a6 = pid_t *ptid,
+ a7 = struct user_desc *tls,
+ 16(sp) = pid_t *ctid) */
+
+ .text
+ENTRY (__clone)
+
+ /* Sanity check arguments. */
+ beqz a2, .Leinval /* no NULL function pointers */
+ beqz a3, .Leinval /* no NULL stack pointers */
+
+ /* a2 and a3 are candidates for destruction by system-call return
+ parameters. We don't need the stack pointer after the system
+ call. We trust that the kernel will preserve a7, a9, and a6. */
+
+ mov a9, a5 /* save function argument */
+ mov a5, a7
+ mov a7, a2 /* save function pointer */
+ mov a8, a6 /* use a8 as a temp */
+ mov a6, a4
+ mov a4, a8
+ l32i a8, a1, 16 /* child_tid */
+ movi a2, SYS_ify (clone)
+
+ /* syscall (a2 = NR_clone,
+ a6 = clone_flags,
+ a3 = usp,
+ a4 = parent_tid,
+ a5 = child_tls,
+ a8 = child_tid) */
+ syscall
+ bltz a2, SYSCALL_ERROR_LABEL
+ beqz a2, .Lthread_start
+
+ /* Fall through for parent. */
+.Lpseudo_end:
+ retw
+
+.Leinval:
+ movi a2, -EINVAL
+ j SYSCALL_ERROR_LABEL
+
+.Lthread_start:
+ /* Start child thread. */
+ movi a0, 0 /* terminate the stack frame */
+
+#ifdef RESET_PID
+ /* Check and see if we need to reset the PID. */
+ bbsi.l a6, 16, 1f /* CLONE_THREAD = 0x00010000 */
+ movi a2, -1
+ bbsi.l a6, 8, 2f /* CLONE_VM = 0x00000100 */
+ movi a2, SYS_ify (getpid)
+ syscall
+2: rur a3, THREADPTR
+ movi a4, PID_OFFSET
+ add a4, a4, a3
+ s32i a2, a4, 0
+ movi a4, TID_OFFSET
+ add a4, a4, a3
+ s32i a2, a3, 0
+1:
+#endif /* RESET_PID */
+
+ mov a6, a9 /* load up the 'arg' parameter */
+ callx4 a7 /* call the user's function */
+
+ /* Call _exit. Note that any return parameter from the user's
+ function in a6 is seen as inputs to _exit. */
+ movi a2, JUMPTARGET(_exit)
+ callx4 a2
+
+PSEUDO_END (__clone)
+
+weak_alias (__clone, clone)
--- /dev/null
+/* Startup code compliant to the ELF Xtensa ABI.
+ Copyright (C) 2001, 2007 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ In addition to the permissions in the GNU Lesser General Public
+ License, the Free Software Foundation gives you unlimited
+ permission to link the compiled version of this file with other
+ programs, and to distribute those programs without any restriction
+ coming from the use of this file. (The GNU Lesser General Public
+ License restrictions do apply in other respects; for example, they
+ cover modification of the file, and distribution when not linked
+ into another program.)
+
+ Note that people who make modified versions of this file are not
+ obligated to grant this special exception for their modified
+ versions; it is their choice whether to do so. The GNU Lesser
+ General Public License gives permission to release a modified
+ version without this exception; this exception also makes it
+ possible to release a modified version which carries forward this
+ exception.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+#include <features.h>
+
+#ifndef __UCLIBC_CTOR_DTOR__
+ .weak _init
+ .weak _fini
+#endif
+
+/* This is the canonical entry point, usually the first thing in the text
+ segment. When the entry point runs, most register values are unspecified,
+ except for:
+
+ a2 Contains a function pointer to be registered with `atexit'.
+ This is how the dynamic linker arranges to have DT_FINI
+ functions called for shared libraries that have been loaded
+ before this code runs.
+
+ a1 The stack (i.e., a1+16) contains the arguments and environment:
+ a1+0 argc
+ a1+4 argv[0]
+ ...
+ a1+(4*argc) NULL
+ a1+(4*(argc+1)) envp[0]
+ ...
+ NULL
+
+ Setup parameters accordingly (for a call4). See function prototype
+ from sysdeps/generic/libc-start.c
+
+ a6 = *main
+ a7 = argc
+ a8 = ubp_av
+ a9 = *init
+ a10 = *fini
+ a11 = *rtld_fini
+ [sp+0] = stack_end
+ */
+
+ .text
+ .align 4
+ .literal_position
+ .global _start
+ .type _start, @function
+_start:
+ /* Clear a0 to obviously mark the outermost frame. */
+ movi a0, 0
+
+ /* Load up the user's main function. */
+ movi a6, main
+
+ /* Extract the arguments as encoded on the stack and set up
+ the arguments for `main': argc, argv. envp will be determined
+ later in __uClibc_main. */
+ l32i a7, a1, 0 /* Load the argument count. */
+ addi a8, a1, 4 /* Compute the argv pointer. */
+
+ /* Push address of our own entry points to .fini and .init. */
+ movi a9, _init
+ movi a10, _fini
+
+ /* Setup the shared library termination function. */
+ mov a11, a2
+
+ /* Provide the highest stack address to the user code (for stacks
+ which grow downwards). Note that we destroy the stack version
+ of argc here. */
+ s32i a1, a1, 0
+
+ /* Call the user's main function, and exit with its value.
+ But let the libc call main. */
+ movi a4, __uClibc_main
+ callx4 a4
+
+ /* Crash if somehow `exit' does return. */
+ ill
+
+ /* Define a symbol for the first piece of initialized data. */
+ .data
+ .align 4
+ .global __data_start
+__data_start:
+ .long 0
+ .weak data_start
+ data_start = __data_start
--- /dev/null
+/* glibc's sysdeps/xtensa/elf/initfini.c used for reference [PROLOG] */
+
+ .section .init
+ .align 4
+ .global _init
+ .type _init, @function
+_init:
+ entry sp, 48
+
+
+ .section .fini
+ .align 4
+ .global _fini
+ .type _fini, @function
+_fini:
+ entry sp, 48
--- /dev/null
+/* glibc's sysdeps/xtensa/elf/initfini.c used for reference [EPILOG] */
+
+ .section .init
+ retw
+
+
+ .section .fini
+ retw
--- /dev/null
+/* vi: set sw=4 ts=4: */
+/*
+ * fork() for Xtensa uClibc
+ *
+ * Copyright (C) 2007 Tensilica Inc.
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#include <unistd.h>
+#include <sys/syscall.h>
+#define _SIGNAL_H
+#include <bits/signum.h>
+
+/* Xtensa doesn't provide a 'fork' system call, so we use 'clone'. */
+
+extern __typeof(fork) __libc_fork;
+
+libc_hidden_proto (fork)
+pid_t __libc_fork (void)
+{
+ return (pid_t) INLINE_SYSCALL (clone, 2, SIGCHLD, 0);
+}
+weak_alias (__libc_fork, fork)
+libc_hidden_weak (fork)
--- /dev/null
+/* Copyright (C) 2005, 2007 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+#include "sysdep.h"
+#include <sys/syscall.h>
+
+#define PAGE_SHIFT 12
+
+/* __ptr_t __mmap (a2 = __ptr_t addr,
+ a3 = size_t len,
+ a4 = int prot,
+ a5 = int flags,
+ a6 = int fd,
+ a7 = off_t offset) */
+
+ENTRY (__mmap)
+
+ /* We only support mmap2 in the kernel, so shift offset by
+ page - size. */
+ mov a8, a6
+ mov a6, a2
+ movi a2, SYS_ify (mmap2)
+ srli a9, a7, PAGE_SHIFT
+
+ /* syscall (a2 = NR_mmap2,
+ a6 = arg0,
+ a3 = arg1,
+ a4 = arg2,
+ a5 = arg3,
+ a8 = arg4,
+ a9 = arg5) */
+
+ syscall
+ bltz a2, SYSCALL_ERROR_LABEL
+
+.Lpseudo_end:
+ retw
+
+PSEUDO_END (__mmap)
+
+weak_alias (__mmap, mmap)
+libc_hidden_weak (mmap)
--- /dev/null
+/* vi: set sw=4 ts=4: */
+/*
+ * posix_fadvise() for Xtensa uClibc
+ *
+ * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
+ * Copyright (C) 2007 Tensilica Inc.
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#include <sys/syscall.h>
+#include <fcntl.h>
+
+int posix_fadvise (int fd, off_t offset, off_t len, int advice)
+{
+#ifdef __NR_fadvise64_64
+ INTERNAL_SYSCALL_DECL (err);
+ int ret = INTERNAL_SYSCALL (fadvise64_64, err, 6, fd, advice,
+ __LONG_LONG_PAIR ((long) (offset >> 31),
+ (long) offset),
+ __LONG_LONG_PAIR ((long) (len >> 31),
+ (long) len));
+ if (!INTERNAL_SYSCALL_ERROR_P (ret, err))
+ return 0;
+ return INTERNAL_SYSCALL_ERRNO (ret, err);
+#else
+ return ENOSYS;
+#endif
+}
--- /dev/null
+/* vi: set sw=4 ts=4: */
+/*
+ * posix_fadvise64() for Xtensa uClibc
+ *
+ * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
+ * Copyright (C) 2007 Tensilica Inc.
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#include <features.h>
+#include <unistd.h>
+#include <errno.h>
+#include <endian.h>
+#include <stdint.h>
+#include <sys/types.h>
+#include <sys/syscall.h>
+#include <fcntl.h>
+
+#ifdef __UCLIBC_HAS_LFS__
+
+int posix_fadvise64 (int fd, __off64_t offset, __off64_t len, int advice)
+{
+#ifdef __NR_fadvise64_64
+ INTERNAL_SYSCALL_DECL (err);
+ int ret = INTERNAL_SYSCALL (fadvise64_64, err, 6, fd, advice,
+ __LONG_LONG_PAIR ((long) (offset >> 32),
+ (long) offset),
+ __LONG_LONG_PAIR ((long) (len >> 32),
+ (long) len));
+ if (!INTERNAL_SYSCALL_ERROR_P (ret, err))
+ return 0;
+ return INTERNAL_SYSCALL_ERRNO (ret, err);
+#else
+ return ENOSYS;
+#endif
+}
+
+#endif /* __UCLIBC_HAS_LFS__ */
--- /dev/null
+/* vi: set sw=4 ts=4: */
+/*
+ * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+/*
+ * Based in part on the files
+ * ./sysdeps/unix/sysv/linux/pwrite.c,
+ * ./sysdeps/unix/sysv/linux/pread.c,
+ * sysdeps/posix/pread.c
+ * sysdeps/posix/pwrite.c
+ * from GNU libc 2.2.5, but reworked considerably...
+ */
+
+#include <sys/syscall.h>
+#include <unistd.h>
+#include <stdint.h>
+#include <endian.h>
+
+extern __typeof(pread) __libc_pread;
+extern __typeof(pwrite) __libc_pwrite;
+#ifdef __UCLIBC_HAS_LFS__
+extern __typeof(pread64) __libc_pread64;
+extern __typeof(pwrite64) __libc_pwrite64;
+#endif
+
+#include <bits/kernel_types.h>
+
+#ifdef __NR_pread
+
+# define __NR___syscall_pread __NR_pread
+/* On Xtensa, 64-bit values are aligned in even/odd register pairs. */
+static inline _syscall6(ssize_t, __syscall_pread, int, fd, void *, buf,
+ size_t, count, int, pad, off_t, offset_hi, off_t, offset_lo);
+
+ssize_t __libc_pread(int fd, void *buf, size_t count, off_t offset)
+{
+ return __syscall_pread(fd, buf, count, 0, __LONG_LONG_PAIR(offset >> 31, offset));
+}
+weak_alias(__libc_pread,pread)
+
+# ifdef __UCLIBC_HAS_LFS__
+ssize_t __libc_pread64(int fd, void *buf, size_t count, off64_t offset)
+{
+ uint32_t low = offset & 0xffffffff;
+ uint32_t high = offset >> 32;
+ return __syscall_pread(fd, buf, count, 0, __LONG_LONG_PAIR(high, low));
+}
+weak_alias(__libc_pread64,pread64)
+# endif /* __UCLIBC_HAS_LFS__ */
+
+#endif /* __NR_pread */
+
+#ifdef __NR_pwrite
+
+# define __NR___syscall_pwrite __NR_pwrite
+/* On Xtensa, 64-bit values are aligned in even/odd register pairs. */
+static inline _syscall6(ssize_t, __syscall_pwrite, int, fd, const void *, buf,
+ size_t, count, int, pad, off_t, offset_hi, off_t, offset_lo);
+
+ssize_t __libc_pwrite(int fd, const void *buf, size_t count, off_t offset)
+{
+ return __syscall_pwrite(fd, buf, count, 0, __LONG_LONG_PAIR(offset >> 31, offset));
+}
+weak_alias(__libc_pwrite,pwrite)
+
+# ifdef __UCLIBC_HAS_LFS__
+ssize_t __libc_pwrite64(int fd, const void *buf, size_t count, off64_t offset)
+{
+ uint32_t low = offset & 0xffffffff;
+ uint32_t high = offset >> 32;
+ return __syscall_pwrite(fd, buf, count, 0, __LONG_LONG_PAIR(high, low));
+}
+weak_alias(__libc_pwrite64,pwrite64)
+# endif /* __UCLIBC_HAS_LFS__ */
+#endif /* __NR_pwrite */
+
+#if ! defined __NR_pread || ! defined __NR_pwrite
+libc_hidden_proto(read)
+libc_hidden_proto(write)
+libc_hidden_proto(lseek)
+
+static ssize_t __fake_pread_write(int fd, void *buf,
+ size_t count, off_t offset, int do_pwrite)
+{
+ int save_errno;
+ ssize_t result;
+ off_t old_offset;
+
+ /* Since we must not change the file pointer preserve the
+ * value so that we can restore it later. */
+ if ((old_offset=lseek(fd, 0, SEEK_CUR)) == (off_t) -1)
+ return -1;
+
+ /* Set to wanted position. */
+ if (lseek(fd, offset, SEEK_SET) == (off_t) -1)
+ return -1;
+
+ if (do_pwrite == 1) {
+ /* Write the data. */
+ result = write(fd, buf, count);
+ } else {
+ /* Read the data. */
+ result = read(fd, buf, count);
+ }
+
+ /* Now we have to restore the position. If this fails we
+ * have to return this as an error. */
+ save_errno = errno;
+ if (lseek(fd, old_offset, SEEK_SET) == (off_t) -1)
+ {
+ if (result == -1)
+ __set_errno(save_errno);
+ return -1;
+ }
+ __set_errno(save_errno);
+ return(result);
+}
+
+# ifdef __UCLIBC_HAS_LFS__
+libc_hidden_proto(lseek64)
+
+static ssize_t __fake_pread_write64(int fd, void *buf,
+ size_t count, off64_t offset, int do_pwrite)
+{
+ int save_errno;
+ ssize_t result;
+ off64_t old_offset;
+
+ /* Since we must not change the file pointer preserve the
+ * value so that we can restore it later. */
+ if ((old_offset=lseek64(fd, 0, SEEK_CUR)) == (off64_t) -1)
+ return -1;
+
+ /* Set to wanted position. */
+ if (lseek64(fd, offset, SEEK_SET) == (off64_t) -1)
+ return -1;
+
+ if (do_pwrite == 1) {
+ /* Write the data. */
+ result = write(fd, buf, count);
+ } else {
+ /* Read the data. */
+ result = read(fd, buf, count);
+ }
+
+ /* Now we have to restore the position. */
+ save_errno = errno;
+ if (lseek64(fd, old_offset, SEEK_SET) == (off64_t) -1) {
+ if (result == -1)
+ __set_errno (save_errno);
+ return -1;
+ }
+ __set_errno (save_errno);
+ return result;
+}
+# endif /* __UCLIBC_HAS_LFS__ */
+#endif /* ! defined __NR_pread || ! defined __NR_pwrite */
+
+#ifndef __NR_pread
+ssize_t __libc_pread(int fd, void *buf, size_t count, off_t offset)
+{
+ return __fake_pread_write(fd, buf, count, offset, 0);
+}
+weak_alias(__libc_pread,pread)
+
+# ifdef __UCLIBC_HAS_LFS__
+ssize_t __libc_pread64(int fd, void *buf, size_t count, off64_t offset)
+{
+ return __fake_pread_write64(fd, buf, count, offset, 0);
+}
+weak_alias(__libc_pread64,pread64)
+# endif /* __UCLIBC_HAS_LFS__ */
+#endif /* ! __NR_pread */
+
+#ifndef __NR_pwrite
+ssize_t __libc_pwrite(int fd, const void *buf, size_t count, off_t offset)
+{
+ /* we won't actually be modifying the buffer,
+ *just cast it to get rid of warnings */
+ return __fake_pread_write(fd, (void*)buf, count, offset, 1);
+}
+weak_alias(__libc_pwrite,pwrite)
+
+# ifdef __UCLIBC_HAS_LFS__
+ssize_t __libc_pwrite64(int fd, const void *buf, size_t count, off64_t offset)
+{
+ return __fake_pread_write64(fd, (void*)buf, count, offset, 1);
+}
+weak_alias(__libc_pwrite64,pwrite64)
+# endif /* __UCLIBC_HAS_LFS__ */
+#endif /* ! __NR_pwrite */
--- /dev/null
+/* setjmp for Xtensa Processors.
+ Copyright (C) 2001, 2007 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+/* This implementation relies heavily on the Xtensa register window
+ mechanism. Setjmp flushes all the windows except its own to the
+ stack and then copies registers from the save areas on the stack
+ into the jmp_buf structure, along with the return address of the call
+ to setjmp. Longjmp invalidates all the windows except its own, and
+ then sets things up so that it will return to the right place,
+ using a window underflow to automatically restore the registers.
+
+ Note that it would probably be sufficient to only copy the
+ registers from setjmp's caller into jmp_buf. However, we also copy
+ the save area located at the stack pointer of setjmp's caller.
+ This save area will typically remain intact until the longjmp call.
+ The one exception is when there is an intervening alloca in
+ setjmp's caller. This is certainly an unusual situation and is
+ likely to cause problems in any case (the storage allocated on the
+ stack cannot be safely accessed following the longjmp). As bad as
+ it is, on most systems this situation would not necessarily lead to
+ a catastrophic failure. If we did not preserve the extra save area
+ on Xtensa, however, it would. When setjmp's caller returns after a
+ longjmp, there will be a window underflow; an invalid return
+ address or stack pointer in the save area will almost certainly
+ lead to a crash. Keeping a copy of the extra save area in the
+ jmp_buf avoids this with only a small additional cost. If setjmp
+ and longjmp are ever time-critical, this could be removed. */
+
+#include "sysdep.h"
+
+/* int setjmp (a2 = jmp_buf env) */
+
+ENTRY (_setjmp)
+ movi a3, 0
+ j 1f
+END (_setjmp)
+libc_hidden_def (_setjmp)
+
+ENTRY (setjmp)
+ movi a3, 1
+ j 1f
+END (setjmp)
+
+/* int __sigsetjmp (a2 = jmp_buf env,
+ a3 = int savemask) */
+
+ENTRY (__sigsetjmp)
+1:
+ /* Flush registers. */
+ movi a4, __window_spill
+ callx4 a4
+
+ /* Preserve the second argument (savemask) in a15. The selection
+ of a15 is arbitrary, except it's otherwise unused. There is no
+ risk of triggering a window overflow since we just returned
+ from __window_spill(). */
+ mov a15, a3
+
+ /* Copy the register save area at (sp - 16). */
+ addi a5, a1, -16
+ l32i a3, a5, 0
+ l32i a4, a5, 4
+ s32i a3, a2, 0
+ s32i a4, a2, 4
+ l32i a3, a5, 8
+ l32i a4, a5, 12
+ s32i a3, a2, 8
+ s32i a4, a2, 12
+
+ /* Copy 0-8 words from the register overflow area. */
+ extui a3, a0, 30, 2
+ blti a3, 2, .Lendsj
+ l32i a7, a1, 4
+ slli a4, a3, 4
+ sub a5, a7, a4
+ addi a6, a2, 16
+ addi a7, a7, -16 // a7 = end of register overflow area
+.Lsjloop:
+ l32i a3, a5, 0
+ l32i a4, a5, 4
+ s32i a3, a6, 0
+ s32i a4, a6, 4
+ l32i a3, a5, 8
+ l32i a4, a5, 12
+ s32i a3, a6, 8
+ s32i a4, a6, 12
+ addi a5, a5, 16
+ addi a6, a6, 16
+ blt a5, a7, .Lsjloop
+.Lendsj:
+
+ /* Copy the register save area at sp. */
+ l32i a3, a1, 0
+ l32i a4, a1, 4
+ s32i a3, a2, 48
+ s32i a4, a2, 52
+ l32i a3, a1, 8
+ l32i a4, a1, 12
+ s32i a3, a2, 56
+ s32i a4, a2, 60
+
+ /* Save the return address, including the window size bits. */
+ s32i a0, a2, 64
+
+ /* a2 still addresses jmp_buf. a15 contains savemask. */
+ mov a6, a2
+ mov a7, a15
+ movi a3, __sigjmp_save
+ callx4 a3
+ mov a2, a6
+ retw
+END(__sigsetjmp)
+
+weak_extern(_setjmp)
+weak_extern(setjmp)
--- /dev/null
+/* Copyright (C) 1996, 1997, 1999, 2007 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+#ifndef _SYS_PROCFS_H
+#define _SYS_PROCFS_H 1
+
+/* This is somewhat modelled after the file of the same name on SVR4
+ systems. It provides a definition of the core file format for ELF
+ used on Linux. It doesn't have anything to do with the /proc file
+ system, even though Linux has one.
+
+ Anyway, the whole purpose of this file is for GDB and GDB only.
+ Don't read too much into it. Don't use it for anything other than
+ GDB unless you know what you are doing. */
+
+#include <features.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/user.h>
+
+__BEGIN_DECLS
+
+/* Type for a general-purpose register. */
+typedef unsigned long elf_greg_t;
+
+#define ELF_NGREG 32
+typedef elf_greg_t elf_gregset_t[ELF_NGREG];
+
+/* Register set for the floating-point registers. */
+#define ELF_NFPREG 18
+typedef unsigned long elf_fpreg_t;
+typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
+
+/* Signal info. */
+struct elf_siginfo
+ {
+ int si_signo; /* Signal number. */
+ int si_code; /* Extra code. */
+ int si_errno; /* Errno. */
+ };
+
+/* Definitions to generate Intel SVR4-like core files. These mostly
+ have the same names as the SVR4 types with "elf_" tacked on the
+ front to prevent clashes with Linux definitions, and the typedef
+ forms have been avoided. This is mostly like the SVR4 structure,
+ but more Linuxy, with things that Linux does not support and which
+ GDB doesn't really use excluded. */
+
+struct elf_prstatus
+ {
+ struct elf_siginfo pr_info; /* Info associated with signal. */
+ short int pr_cursig; /* Current signal. */
+ unsigned long int pr_sigpend; /* Set of pending signals. */
+ unsigned long int pr_sighold; /* Set of held signals. */
+ __pid_t pr_pid;
+ __pid_t pr_ppid;
+ __pid_t pr_pgrp;
+ __pid_t pr_sid;
+ struct timeval pr_utime; /* User time. */
+ struct timeval pr_stime; /* System time. */
+ struct timeval pr_cutime; /* Cumulative user time. */
+ struct timeval pr_cstime; /* Cumulative system time. */
+ elf_gregset_t pr_reg; /* GP registers. */
+ int pr_fpvalid; /* True if math copro being used. */
+ };
+
+
+#define ELF_PRARGSZ (80) /* Number of chars for args. */
+
+struct elf_prpsinfo
+ {
+ char pr_state; /* Numeric process state. */
+ char pr_sname; /* Char for pr_state. */
+ char pr_zomb; /* Zombie. */
+ char pr_nice; /* Nice val. */
+ unsigned long int pr_flag; /* Flags. */
+ unsigned short int pr_uid;
+ unsigned short int pr_gid;
+ int pr_pid, pr_ppid, pr_pgrp, pr_sid;
+ /* Lots missing */
+ char pr_fname[16]; /* Filename of executable. */
+ char pr_psargs[ELF_PRARGSZ]; /* Initial part of arg list. */
+ };
+
+/* The rest of this file provides the types for emulation of the
+ Solaris <proc_service.h> interfaces that should be implemented by
+ users of libthread_db. */
+
+/* Addresses. */
+typedef void *psaddr_t;
+
+/* Register sets. Linux has different names. */
+typedef elf_gregset_t prgregset_t;
+typedef elf_fpregset_t prfpregset_t;
+
+/* We don't have any differences between processes and threads,
+ therefore have only one PID type. */
+typedef __pid_t lwpid_t;
+
+/* Process status and info. In the end we do provide typedefs for them. */
+typedef struct elf_prstatus prstatus_t;
+typedef struct elf_prpsinfo prpsinfo_t;
+
+__END_DECLS
+
+#endif /* sys/procfs.h */
--- /dev/null
+/* `ptrace' debugger support interface. Linux version.
+ Copyright (C) 1996, 1997, 1998, 1999, 2000, 2007
+ Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+#ifndef _SYS_PTRACE_H
+#define _SYS_PTRACE_H 1
+
+#include <features.h>
+
+/* Kludge away careless namespace pollution from the kernel. */
+
+#undef PTRACE_GETREGS
+#undef PTRACE_SETREGS
+#undef PTRACE_GETFPREGS
+#undef PTRACE_SETFPREGS
+#undef PTRACE_GETFPREGSIZE
+
+
+__BEGIN_DECLS
+
+/* Type of the REQUEST argument to `ptrace.' */
+enum __ptrace_request
+{
+ /* Indicate that the process making this request should be traced.
+ All signals received by this process can be intercepted by its
+ parent, and its parent can use the other `ptrace' requests. */
+ PTRACE_TRACEME = 0,
+#define PT_TRACE_ME PTRACE_TRACEME
+
+ /* Return the word in the process's text space at address ADDR. */
+ PTRACE_PEEKTEXT = 1,
+#define PT_READ_I PTRACE_PEEKTEXT
+
+ /* Return the word in the process's data space at address ADDR. */
+ PTRACE_PEEKDATA = 2,
+#define PT_READ_D PTRACE_PEEKDATA
+
+ /* Return the word in the process's user area at offset ADDR. */
+ PTRACE_PEEKUSER = 3,
+#define PT_READ_U PTRACE_PEEKUSER
+
+ /* Write the word DATA into the process's text space at address ADDR. */
+ PTRACE_POKETEXT = 4,
+#define PT_WRITE_I PTRACE_POKETEXT
+
+ /* Write the word DATA into the process's data space at address ADDR. */
+ PTRACE_POKEDATA = 5,
+#define PT_WRITE_D PTRACE_POKEDATA
+
+ /* Write the word DATA into the process's user area at offset ADDR. */
+ PTRACE_POKEUSER = 6,
+#define PT_WRITE_U PTRACE_POKEUSER
+
+ /* Continue the process. */
+ PTRACE_CONT = 7,
+#define PT_CONTINUE PTRACE_CONT
+
+ /* Kill the process. */
+ PTRACE_KILL = 8,
+#define PT_KILL PTRACE_KILL
+
+ /* Single step the process.
+ This is not supported on all machines. */
+ PTRACE_SINGLESTEP = 9,
+#define PT_STEP PTRACE_SINGLESTEP
+
+ /* Get all general purpose registers used by a processes.
+ This is not supported on all machines. */
+ PTRACE_GETREGS = 12,
+#define PT_GETREGS PTRACE_GETREGS
+
+ /* Set all general purpose registers used by a processes.
+ This is not supported on all machines. */
+ PTRACE_SETREGS = 13,
+#define PT_SETREGS PTRACE_SETREGS
+
+ /* Get all floating point registers used by a processes.
+ This is not supported on all machines. */
+ PTRACE_GETFPREGS = 14,
+#define PT_GETFPREGS PTRACE_GETFPREGS
+
+ /* Set all floating point registers used by a processes.
+ This is not supported on all machines. */
+ PTRACE_SETFPREGS = 15,
+#define PT_SETFPREGS PTRACE_SETFPREGS
+
+ /* Attach to a process that is already running. */
+ PTRACE_ATTACH = 16,
+#define PT_ATTACH PTRACE_ATTACH
+
+ /* Detach from a process attached to with PTRACE_ATTACH. */
+ PTRACE_DETACH = 17,
+#define PT_DETACH PTRACE_DETACH
+
+ /* Get size required for the buffer holding the floating point registers.
+ This is not supported on all machines. */
+ PTRACE_GETFPREGSIZE = 18,
+#define PT_GETFPREGSIZE PTRACE_GETFPREGSIZE
+
+ /* Continue and stop at the next (return from) syscall. */
+ PTRACE_SYSCALL = 24
+#define PT_SYSCALL PTRACE_SYSCALL
+};
+
+/* Options set using PTRACE_SETOPTIONS. */
+enum __ptrace_setoptions {
+ PTRACE_O_TRACESYSGOOD = 0x00000001,
+ PTRACE_O_TRACEFORK = 0x00000002,
+ PTRACE_O_TRACEVFORK = 0x00000004,
+ PTRACE_O_TRACECLONE = 0x00000008,
+ PTRACE_O_TRACEEXEC = 0x00000010,
+ PTRACE_O_TRACEVFORKDONE = 0x00000020,
+ PTRACE_O_TRACEEXIT = 0x00000040,
+ PTRACE_O_MASK = 0x0000007f
+};
+
+/* Wait extended result codes for the above trace options. */
+enum __ptrace_eventcodes {
+ PTRACE_EVENT_FORK = 1,
+ PTRACE_EVENT_VFORK = 2,
+ PTRACE_EVENT_CLONE = 3,
+ PTRACE_EVENT_EXEC = 4,
+ PTRACE_EVENT_VFORK_DONE = 5,
+ PTRACE_EVENT_EXIT = 6
+};
+
+/* Perform process tracing functions. REQUEST is one of the values
+ above, and determines the action to be taken.
+ For all requests except PTRACE_TRACEME, PID specifies the process to be
+ traced.
+
+ PID and the other arguments described above for the various requests should
+ appear (those that are used for the particular request) as:
+ pid_t PID, void *ADDR, int DATA, void *ADDR2
+ after REQUEST. */
+extern long int ptrace (enum __ptrace_request __request, ...) __THROW;
+
+__END_DECLS
+
+#endif /* _SYS_PTRACE_H */
--- /dev/null
+/* Copyright (C) 2001, 2006, 2007 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+#ifndef _SYS_UCONTEXT_H
+#define _SYS_UCONTEXT_H 1
+
+#include <features.h>
+#include <signal.h>
+
+/* We need the signal context definitions even if they are not used
+ included in <signal.h>. */
+#include <bits/sigcontext.h>
+
+/* Revise this structure when we add support for coprocessors. */
+
+/* Structure to describe FPU registers. */
+typedef struct fpregset
+{
+ int dummy;
+} fpregset_t;
+
+typedef struct sigcontext mcontext_t;
+
+/* Userlevel context. */
+typedef struct ucontext
+ {
+ unsigned long int uc_flags;
+ struct ucontext *uc_link;
+ stack_t uc_stack;
+ mcontext_t uc_mcontext;
+ __sigset_t uc_sigmask;
+ } ucontext_t;
+
+#endif /* sys/ucontext.h */
--- /dev/null
+/* Copyright (C) 2005, 2007 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+#include "sysdep.h"
+
+/* The register layout upon entering the function is:
+
+ arguments syscall number arg0, arg1, arg2, arg3, arg4, arg5
+ --------- -------------- ----------------------------------
+ function a2 a3, a4, a5, a6, a7, (sp)
+ syscall a2 a6, a3, a4, a5, a8, a9
+ */
+
+ENTRY (syscall)
+ l32i a9, a1, 16 /* load extra argument from stack */
+ mov a8, a7
+ mov a7, a3 /* preserve a3 in a7 */
+ mov a3, a4
+ mov a4, a5
+ mov a5, a6
+ mov a6, a7
+ syscall
+ movi a4, -4095
+ bgeu a2, a4, SYSCALL_ERROR_LABEL
+.Lpseudo_end:
+ retw
+PSEUDO_END (syscall)
--- /dev/null
+/* Assembler macros for Xtensa processors.
+ Copyright (C) 2001, 2007 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+#ifdef __ASSEMBLER__
+
+#define ALIGNARG(log2) 1 << log2
+#define ASM_TYPE_DIRECTIVE(name, typearg) .type name, typearg
+#define ASM_SIZE_DIRECTIVE(name) .size name, . - name
+
+#ifdef __STDC__
+#define C_LABEL(name) name :
+#else
+#define C_LABEL(name) name/**/:
+#endif
+
+#define ENTRY(name) \
+ ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(name); \
+ ASM_TYPE_DIRECTIVE (C_SYMBOL_NAME(name), @function); \
+ .align ALIGNARG(2); \
+ LITERAL_POSITION; \
+ C_LABEL(name) \
+ entry sp, FRAMESIZE; \
+ CALL_MCOUNT
+
+#undef END
+#define END(name) ASM_SIZE_DIRECTIVE(name)
+
+/* Define a macro for this directive so it can be removed in a few places. */
+#define LITERAL_POSITION .literal_position
+
+#undef JUMPTARGET
+#ifdef PIC
+/* The "@PLT" suffix is currently a no-op for non-shared linking, but
+ it doesn't hurt to use it conditionally for PIC code in case that
+ changes someday. */
+#define JUMPTARGET(name) name##@PLT
+#else
+#define JUMPTARGET(name) name
+#endif
+
+#define FRAMESIZE 16
+#define CALL_MCOUNT /* Do nothing. */
+
+
+/* Linux uses a negative return value to indicate syscall errors,
+ unlike most Unices, which use the condition codes' carry flag.
+
+ Since version 2.1 the return value of a system call might be
+ negative even if the call succeeded. E.g., the `lseek' system call
+ might return a large offset. Therefore we must not anymore test
+ for < 0, but test for a real error by making sure the value in a2
+ is a real error number. Linus said he will make sure the no syscall
+ returns a value in -1 .. -4095 as a valid result so we can safely
+ test with -4095. */
+
+/* We don't want the label for the error handler to be global when we define
+ it here. */
+#define SYSCALL_ERROR_LABEL 0f
+
+#undef PSEUDO
+#define PSEUDO(name, syscall_name, args) \
+ .text; \
+ ENTRY (name) \
+ DO_CALL (syscall_name, args); \
+ movi a4, -4095; \
+ bgeu a2, a4, SYSCALL_ERROR_LABEL; \
+ .Lpseudo_end:
+
+#undef PSEUDO_END
+#define PSEUDO_END(name) \
+ SYSCALL_ERROR_HANDLER \
+ END (name)
+
+#undef PSEUDO_NOERRNO
+#define PSEUDO_NOERRNO(name, syscall_name, args) \
+ .text; \
+ ENTRY (name) \
+ DO_CALL (syscall_name, args)
+
+#undef PSEUDO_END_NOERRNO
+#define PSEUDO_END_NOERRNO(name) \
+ END (name)
+
+#undef ret_NOERRNO
+#define ret_NOERRNO retw
+
+/* The function has to return the error code. */
+#undef PSEUDO_ERRVAL
+#define PSEUDO_ERRVAL(name, syscall_name, args) \
+ .text; \
+ ENTRY (name) \
+ DO_CALL (syscall_name, args); \
+ neg a2, a2
+
+#undef PSEUDO_END_ERRVAL
+#define PSEUDO_END_ERRVAL(name) \
+ END (name)
+
+#define ret_ERRVAL retw
+
+#if RTLD_PRIVATE_ERRNO
+# define SYSCALL_ERROR_HANDLER \
+0: movi a4, rtld_errno; \
+ neg a2, a2; \
+ s32i a2, a4, 0; \
+ movi a2, -1; \
+ j .Lpseudo_end;
+
+#elif defined _LIBC_REENTRANT
+
+# if USE___THREAD
+# ifndef NOT_IN_libc
+# define SYSCALL_ERROR_ERRNO __libc_errno
+# else
+# define SYSCALL_ERROR_ERRNO errno
+# endif
+# define SYSCALL_ERROR_HANDLER \
+0: rur a4, THREADPTR; \
+ movi a3, SYSCALL_ERROR_ERRNO@TPOFF; \
+ neg a2, a2; \
+ add a4, a4, a3; \
+ s32i a2, a4, 0; \
+ movi a2, -1; \
+ j .Lpseudo_end;
+# else /* !USE___THREAD */
+# define SYSCALL_ERROR_HANDLER \
+0: neg a2, a2; \
+ mov a6, a2; \
+ movi a4, __errno_location@PLT; \
+ callx4 a4; \
+ s32i a2, a6, 0; \
+ movi a2, -1; \
+ j .Lpseudo_end;
+# endif /* !USE___THREAD */
+#else /* !_LIBC_REENTRANT */
+#define SYSCALL_ERROR_HANDLER \
+0: movi a4, errno; \
+ neg a2, a2; \
+ s32i a2, a4, 0; \
+ movi a2, -1; \
+ j .Lpseudo_end;
+#endif /* _LIBC_REENTRANT */
+
+#endif /* __ASSEMBLER__ */
--- /dev/null
+/* Copyright (C) 2005, 2007 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+#include "sysdep.h"
+#include <sys/syscall.h>
+#define _SIGNAL_H
+#include <bits/signum.h>
+
+
+/* Clone the calling process, but without copying the whole address space.
+ The calling process is suspended until the new process exits or is
+ replaced by a call to `execve'. Return -1 for errors, 0 to the new process,
+ and the process ID of the new process to the old process.
+
+ Note that it is important that we don't create a new stack frame for the
+ caller. */
+
+
+/* The following are defined in linux/sched.h, which unfortunately
+ is not safe for inclusion in an assembly file. */
+#define CLONE_VM 0x00000100 /* set if VM shared between processes */
+#define CLONE_VFORK 0x00004000 /* set if the parent wants the child to
+ wake it up on mm_release */
+
+#ifndef SAVE_PID
+#define SAVE_PID
+#endif
+
+#ifndef RESTORE_PID
+#define RESTORE_PID
+#endif
+
+
+/* pid_t vfork(void);
+ Implemented as __clone_syscall(CLONE_VFORK | CLONE_VM | SIGCHLD, 0) */
+
+ENTRY (__vfork)
+
+ movi a6, .Ljumptable
+ extui a2, a0, 30, 2 // call-size: call4/8/12 = 1/2/3
+ addx4 a4, a2, a6 // find return address in jumptable
+ l32i a4, a4, 0
+ add a4, a4, a6
+
+ slli a2, a2, 30
+ xor a3, a0, a2 // remove call-size from return address
+ extui a5, a4, 30, 2 // get high bits of jump target
+ slli a5, a5, 30
+ or a3, a3, a5 // stuff them into the return address
+ xor a4, a4, a5 // clear high bits of jump target
+ or a0, a4, a2 // create temporary return address
+ retw // "return" to .L4, .L8, or .L12
+
+ .align 4
+.Ljumptable:
+ .word 0
+ .word .L4 - .Ljumptable
+ .word .L8 - .Ljumptable
+ .word .L12 - .Ljumptable
+
+ /* a7: return address */
+.L4: mov a12, a2
+ mov a13, a3
+
+ SAVE_PID
+
+ /* Use syscall 'clone'. Set new stack pointer to the same address. */
+ movi a2, SYS_ify (clone)
+ movi a3, 0
+ movi a6, CLONE_VM | CLONE_VFORK | SIGCHLD
+ syscall
+
+ RESTORE_PID
+
+ movi a5, -4096
+
+ mov a6, a2
+ mov a2, a12
+ mov a3, a13
+
+ bgeu a6, a5, 1f
+ jx a7
+1: call4 .Lerr // returns to original caller
+
+
+ /* a11: return address */
+.L8: mov a12, a2
+ mov a13, a3
+ mov a14, a6
+
+ SAVE_PID
+
+ movi a2, SYS_ify (clone)
+ movi a3, 0
+ movi a6, CLONE_VM | CLONE_VFORK | SIGCHLD
+ syscall
+
+ RESTORE_PID
+
+ movi a9, -4096
+
+ mov a10, a2
+ mov a2, a12
+ mov a3, a13
+ mov a6, a14
+
+ bgeu a10, a9, 1f
+ jx a11
+1: call8 .Lerr // returns to original caller
+
+
+ /* a15: return address */
+.L12: mov a12, a2
+ mov a13, a3
+ mov a14, a6
+
+ SAVE_PID
+
+ movi a2, SYS_ify (clone)
+ movi a3, 0
+ movi a6, CLONE_VM | CLONE_VFORK | SIGCHLD
+ syscall
+
+ RESTORE_PID
+
+ mov a3, a13
+ movi a13, -4096
+
+ mov a6, a14
+ mov a14, a2
+
+ mov a2, a12
+
+ bgeu a14, a13, 1f
+ jx a15
+1: call12 .Lerr // returns to original caller
+
+
+ .align 4
+.Lerr: entry a1, 16
+
+ /* Restore the return address. */
+ extui a4, a0, 30, 2 // get the call-size bits
+ slli a4, a4, 30
+ slli a3, a3, 2 // clear high bits of target address
+ srli a3, a3, 2
+ or a0, a3, a4 // combine them
+
+ PSEUDO_END (__vfork)
+.Lpseudo_end:
+ retw
+
+libc_hidden_def (__vfork)
+
+weak_alias (__vfork, vfork)
--- /dev/null
+/* Function to force register windows to the stack.
+ Copyright (C) 2005, 2007 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+#include <bits/xtensa-config.h>
+
+ .text
+ .align 4
+ .literal_position
+ .global __window_spill
+ .type __window_spill, @function
+__window_spill:
+ entry a1, 48
+ bbci.l a0, 31, .L4 // branch if called with call4
+ bbsi.l a0, 30, .L12 // branch if called with call12
+
+ /* Called with call8: touch register NUM_REGS-12 (4/20/52) */
+.L8:
+#if XCHAL_NUM_AREGS > 16
+ call12 1f
+ retw
+
+ .align 4
+1: _entry a1, 48 // touch NUM_REGS-24 (x/8/40)
+
+#if XCHAL_NUM_AREGS == 32
+ mov a8, a0
+ retw
+#else
+ _entry a1, 48 // touch NUM_REGS-36 (x/x/28)
+ mov a12, a0
+ _entry a1, 48 // touch NUM_REGS-48 (x/x/16)
+ mov a12, a0
+ _entry a1, 16 // touch NUM_REGS-60 (x/x/4)
+#endif
+#endif
+ mov a4, a0
+ retw
+
+ /* Called with call4: touch register NUM_REGS-8 (8/24/56) */
+.L4:
+#if XCHAL_NUM_AREGS == 16
+ mov a8, a0
+#else
+ call12 1f
+ retw
+
+ .align 4
+1: _entry a1, 48 // touch NUM_REGS-20 (x/12/44)
+ mov a12, a0
+#if XCHAL_NUM_AREGS > 32
+ _entry a1, 48 // touch NUM_REGS-32 (x/x/32)
+ mov a12, a0
+ _entry a1, 48 // touch NUM_REGS-44 (x/x/20)
+ mov a12, a0
+ _entry a1, 48 // touch NUM_REGS-56 (x/x/8)
+ mov a8, a0
+#endif
+#endif
+ retw
+
+ /* Called with call12: touch register NUM_REGS-16 (x/16/48) */
+.L12:
+#if XCHAL_NUM_AREGS > 16
+ call12 1f
+ retw
+
+ .align 4
+1: _entry a1, 48 // touch NUM_REGS-28 (x/4/36)
+#if XCHAL_NUM_AREGS == 32
+ mov a4, a0
+#else
+ mov a12, a0
+ _entry a1, 48 // touch NUM_REGS-40 (x/x/24)
+ mov a12, a0
+ _entry a1, 48 // touch NUM_REGS-52 (x/x/12)
+ mov a12, a0
+#endif
+#endif
+ retw
--- /dev/null
+/* Machine-dependent pthreads configuration and inline functions.
+ Xtensa version.
+
+ Copyright (C) 2007 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+#ifndef _PT_MACHINE_H
+#define _PT_MACHINE_H 1
+
+#include <sys/syscall.h>
+#include <asm/unistd.h>
+
+#ifndef PT_EI
+# define PT_EI extern inline
+#endif
+
+/* Memory barrier. */
+#define MEMORY_BARRIER() __asm__ ("memw" : : : "memory")
+
+/* Spinlock implementation; required. */
+PT_EI long int
+testandset (int *spinlock)
+{
+ int unused = 0;
+ return INTERNAL_SYSCALL (xtensa, , 4, SYS_XTENSA_ATOMIC_SET,
+ spinlock, 1, unused);
+}
+
+/* Get some notion of the current stack. Need not be exactly the top
+ of the stack, just something somewhere in the current frame. */
+#define CURRENT_STACK_FRAME __builtin_frame_address (0)
+
+#endif /* _PT_MACHINE_H */
-e 's/sh[234]/sh/' \
-e 's/mips.*/mips/' \
-e 's/cris.*/cris/' \
+ -e 's/xtensa.*/xtensa/' \
)
endif
export TARGET_ARCH
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