--- /dev/null
+/* vi: set sw=8 ts=8: */
+/*
+ * Various assmbly language/system dependent hacks that are required
+ * so that we can minimize the amount of platform specific code.
+ */
+
+/*
+ * Define this if the system uses RELOCA.
+ */
+#define ELF_USES_RELOCA
+
+/*
+ * Get a pointer to the argv array. On many platforms this can be just
+ * the address if the first argument, on other platforms we need to
+ * do something a little more subtle here.
+ */
+#define GET_ARGV(ARGVP, ARGS) ARGVP = ((unsigned long *)ARGS)
+
+/*
+ * Initialization sequence for a GOT.
+ */
+#define INIT_GOT(GOT_BASE,MODULE) \
+{ \
+ GOT_BASE[2] = (unsigned long)_dl_linux_resolve; \
+ GOT_BASE[1] = (unsigned long)(MODULE); \
+}
+
+/*
+ * Here is a macro to perform a relocation. This is only used when
+ * bootstrapping the dynamic loader. RELP is the relocation that we
+ * are performing, REL is the pointer to the address we are relocating.
+ * SYMBOL is the symbol involved in the relocation, and LOAD is the
+ * load address.
+ */
+
+/*
+ * We need to do this stupidity here as the preprocessor will choke when
+ * SYMTAB is NULL if we do this in PERFORM_BOOTSTRAP_RELOC().
+ */
+
+#include <elf.h>
+
+static inline int __extract_lsb_from_symtab(Elf32_Sym *symtab)
+{
+ static int lsb = 0;
+
+ /* Check for SHmedia/SHcompact */
+ if (symtab)
+ lsb = symtab->st_other & 4;
+
+ return lsb;
+}
+
+/*
+ * While on the subject of stupidity, there appear to be some conflicts with
+ * regards to several relocation types as far as binutils is concerned
+ * (Barcelona and Madrid both appear to use an out of date elf.h, whereas
+ * native Catalonia has all of the necessary definitions. As a workaround,
+ * we'll just define them here for sanity..
+ */
+#ifndef R_SH_RELATIVE_LOW16
+# define R_SH_RELATIVE_LOW16 197
+# define R_SH_RELATIVE_MEDLOW16 198
+# define R_SH_IMM_LOW16 246
+# define R_SH_IMM_LOW16_PCREL 247
+# define R_SH_IMM_MEDLOW16 248
+# define R_SH_IMM_MEDLOW16_PCREL 249
+#endif
+
+#define PERFORM_BOOTSTRAP_RELOC(RELP,REL,SYMBOL,LOAD,SYMTAB) \
+ const unsigned int r_type = ELF32_R_TYPE((RELP)->r_info); \
+ int lsb = __extract_lsb_from_symtab(SYMTAB); \
+ \
+ switch (r_type) { \
+ case R_SH_REL32: \
+ *(REL) = (SYMBOL) + (RELP)->r_addend \
+ - (unsigned long)(REL); \
+ break; \
+ case R_SH_DIR32: \
+ case R_SH_GLOB_DAT: \
+ case R_SH_JMP_SLOT: \
+ *(REL) = ((SYMBOL) + (RELP)->r_addend) | lsb; \
+ break; \
+ case R_SH_RELATIVE: \
+ *(REL) = (LOAD) + (RELP)->r_addend; \
+ break; \
+ case R_SH_RELATIVE_LOW16: \
+ case R_SH_RELATIVE_MEDLOW16: \
+ { \
+ unsigned long word, value; \
+ \
+ word = (unsigned long)(REL) & ~0x3fffc00; \
+ value = (LOAD) + (RELP)->r_addend; \
+ \
+ if (r_type == R_SH_RELATIVE_MEDLOW16) \
+ value >>= 16; \
+ \
+ word |= (value & 0xffff) << 10; \
+ *(REL) = word; \
+ break; \
+ } \
+ case R_SH_IMM_LOW16: \
+ case R_SH_IMM_MEDLOW16: \
+ { \
+ unsigned long word, value; \
+ \
+ word = (unsigned long)(REL) & ~0x3fffc00; \
+ value = ((SYMBOL) + (RELP)->r_addend) | lsb; \
+ \
+ if (r_type == R_SH_IMM_MEDLOW16) \
+ value >>= 16; \
+ \
+ word |= (value & 0xffff) << 10; \
+ *(REL) = word; \
+ break; \
+ } \
+ case R_SH_IMM_LOW16_PCREL: \
+ case R_SH_IMM_MEDLOW16_PCREL: \
+ { \
+ unsigned long word, value; \
+ \
+ word = (unsigned long)(REL) & ~0x3fffc00; \
+ value = (SYMBOL) + (RELP)->r_addend \
+ - (unsigned long)(REL); \
+ \
+ if (r_type == R_SH_IMM_MEDLOW16_PCREL) \
+ value >>= 16; \
+ \
+ word |= (value & 0xffff) << 10; \
+ *(REL) = word; \
+ break; \
+ } \
+ case R_SH_NONE: \
+ break; \
+ default: \
+ SEND_STDERR("BOOTSTRAP_RELOC: unhandled reloc type "); \
+ SEND_NUMBER_STDERR(ELF32_R_TYPE((RELP)->r_info), 1); \
+ SEND_STDERR("REL, SYMBOL, LOAD: "); \
+ SEND_ADDRESS_STDERR(REL, 0); \
+ SEND_STDERR(", "); \
+ SEND_ADDRESS_STDERR(SYMBOL, 0); \
+ SEND_STDERR(", "); \
+ SEND_ADDRESS_STDERR(LOAD, 1); \
+ _dl_exit(1); \
+ }
+
+/*
+ * Transfer control to the user's application, once the dynamic loader
+ * is done. This routine has to exit the current function, then
+ * call the _dl_elf_main function.
+ */
+
+#define START() return _dl_elf_main;
+
+/* Here we define the magic numbers that this dynamic loader should accept */
+#define MAGIC1 EM_SH
+#undef MAGIC2
+/* Used for error messages */
+#define ELF_TARGET "sh64"
+
+struct elf_resolve;
+extern unsigned long _dl_linux_resolver(struct elf_resolve * tpnt, int reloc_entry);
+
+#define do_rem(result, n, base) result = (n % base)
+
+/* 4096 bytes alignment */
+#define PAGE_ALIGN 0xfffff000
+#define ADDR_ALIGN 0xfff
+#define OFFS_ALIGN 0x7ffff000
+
--- /dev/null
+/* vi: set sw=8 ts=8: */
+/*
+ * ldso/ldso/sh64/elfinterp.c
+ *
+ * SuperH (sh64) ELF shared library loader suppport
+ *
+ * Copyright (C) 2003 Paul Mundt <lethal@linux-sh.org>
+ *
+ * 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.
+ */
+
+#ifdef __SUPPORT_LD_DEBUG__
+static const char *_dl_reltypes_tab[] = {
+ /* SHcompact relocs */
+ [0] = "R_SH_NONE", "R_SH_DIR32",
+ "R_SH_REL32", "R_SH_DIR8WPN",
+ [4] = "R_SH_IND12W", "R_SH_DIR8WPL",
+ "R_SH_DIR8WPZ", "R_SH_DIR8BP",
+ [8] = "R_SH_DIR8W", "R_SH_DIR8L",
+ [25] = "R_SH_SWITCH16", "R_SH_SWITCH32",
+ "R_SH_USES", "R_SH_COUNT",
+ [29] = "R_SH_ALIGN", "R_SH_CODE",
+ "R_SH_DATA", "R_SH_LABEL",
+ [33] = "R_SH_SWITCH8", "R_SH_GNU_VTINHERIT",
+ "R_SH_GNU_VTENTRY",
+ [160] = "R_SH_GOT32", "R_SH_PLT32",
+ "R_SH_COPY", "R_SH_GLOB_DAT",
+ [164] = "R_SH_JMP_SLOT", "R_SH_RELATIVE",
+ "R_SH_GOTOFF", "R_SH_GOTPC",
+
+ /* SHmedia relocs */
+ [45] = "R_SH_DIR5U", "R_SH_DIR6U",
+ "R_SH_DIR6S", "R_SH_DIR10S",
+ [49] = "R_SH_DIR10SW", "R_SH_DIR10SL",
+ "R_SH_DIR10SQ",
+ [169] = "R_SH_GOT_LOW16", "R_SH_GOT_MEDLOW16",
+ "R_SH_GOT_MEDHI16", "R_SH_GOT_HI16",
+ [173] = "R_SH_GOTPLT_LOW16", "R_SH_GOTPLT_MEDLOW16",
+ "R_SH_GOTPLT_MEDHI16", "R_SH_GOTPLT_HI16",
+ [177] = "R_SH_PLT_LOW16", "R_SH_PLT_MEDLOW16",
+ "R_SH_PLT_MEDHI16", "R_SH_PLT_HI16",
+ [181] = "R_SH_GOTOFF_LOW16", "R_SH_GOTOFF_MEDLOW16",
+ "R_SH_GOTOFF_MEDHI16", "R_SH_GOTOFF_HI16",
+ [185] = "R_SH_GOTPC_LOW16", "R_SH_GOTPC_MEDLOW16",
+ "R_SH_GOTPC_MEDHI16", "R_SH_GOTPC_HI16",
+ [189] = "R_SH_GOT10BY4", "R_SH_GOTPLT10BY4",
+ "R_SH_GOT10BY8", "R_SH_GOTPLT10BY8",
+ [193] = "R_SH_COPY64", "R_SH_GLOB_DAT64",
+ "R_SH_JMP_SLOT64", "R_SH_RELATIVE64",
+ [197] = "R_SH_RELATIVE_LOW16", "R_SH_RELATIVE_MEDLOW16",
+ "R_SH_RELATIVE_MEDHI16","R_SH_RELATIVE_HI16",
+ [242] = "R_SH_SHMEDIA_CODE", "R_SH_PT_16",
+ "R_SH_IMMS16", "R_SH_IMMU16",
+ [246] = "R_SH_IMM_LOW16", "R_SH_IMM_LOW16_PCREL",
+ "R_SH_IMM_MEDLOW16", "R_SH_IMM_MEDLOW16_PCREL",
+ [250] = "R_SH_IMM_MEDHI16", "R_SH_IMM_MEDHI16_PCREL",
+ "R_SH_IMM_HI16", "R_SH_IMM_HI16_PCREL",
+ [254] = "R_SH_64", "R_SH_64_PCREL",
+};
+
+static const char *_dl_reltypes(int type)
+{
+ static char buf[22];
+ const char *str;
+ int tabsize;
+
+ tabsize = sizeof(_dl_reltypes_tab)/sizeof(_dl_reltypes_tab[0]);
+ str = _dl_reltypes_tab[type];
+
+ if (type >= tabsize || str == NULL)
+ str =_dl_simple_ltoa(buf, (unsigned long)(type));
+
+ return str;
+}
+
+static void debug_sym(Elf32_Sym *symtab, char *strtab, int symtab_index)
+{
+ if (!_dl_debug_symbols || !symtab_index)
+ return;
+
+ _dl_dprintf(_dl_debug_file,
+ "\n%s\tvalue=%x\tsize=%x\tinfo=%x\tother=%x\tshndx=%x",
+ strtab + symtab[symtab_index].st_name,
+ symtab[symtab_index].st_value,
+ symtab[symtab_index].st_size,
+ symtab[symtab_index].st_info,
+ symtab[symtab_index].st_other,
+ symtab[symtab_index].st_shndx);
+}
+
+static void debug_reloc(Elf32_Sym *symtab, char *strtab, ELF_RELOC *rpnt)
+{
+ if (!_dl_debug_reloc)
+ return;
+
+ if (_dl_debug_symbols) {
+ _dl_dprintf(_dl_debug_file, "\n\t");
+ } else {
+ int symtab_index;
+ const char *sym;
+
+ symtab_index = ELF32_R_SYM(rpnt->r_info);
+ sym = symtab_index ? strtab + symtab[symtab_index].st_name
+ : "sym=0x0";
+
+ _dl_dprintf(_dl_debug_file, "\n%s\n\t", sym);
+ }
+
+ _dl_dprintf(_dl_debug_file, "%s\toffset=%x",
+ _dl_reltypes(ELF32_R_TYPE(rpnt->r_info)),
+ rpnt->r_offset);
+
+#ifdef ELF_USES_RELOCA
+ _dl_dprintf(_dl_debug_file, "\taddend=%x", rpnt->r_addend);
+#endif
+
+ _dl_dprintf(_dl_debug_file, "\n");
+
+}
+#endif /* __SUPPORT_LD_DEBUG__ */
+
+/* Program to load an ELF binary on a linux system, and run it.
+ References to symbols in sharable libraries can be resolved by either
+ an ELF sharable library or a linux style of shared library. */
+
+/* Disclaimer: I have never seen any AT&T source code for SVr4, nor have
+ I ever taken any courses on internals. This program was developed using
+ information available through the book "UNIX SYSTEM V RELEASE 4,
+ Programmers guide: Ansi C and Programming Support Tools", which did
+ a more than adequate job of explaining everything required to get this
+ working. */
+
+extern int _dl_linux_resolve(void);
+
+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;
+ unsigned long instr_addr;
+ char *symname;
+
+ rel_addr = (char *)(tpnt->dynamic_info[DT_JMPREL] + tpnt->loadaddr);
+
+ this_reloc = (ELF_RELOC *)(intptr_t)(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 *)(intptr_t)
+ (tpnt->dynamic_info[DT_SYMTAB] + tpnt->loadaddr);
+ strtab = (char *)(tpnt->dynamic_info[DT_STRTAB] + tpnt->loadaddr);
+ symname = strtab + symtab[symtab_index].st_name;
+
+ if (reloc_type != R_SH_JMP_SLOT) {
+ _dl_dprintf(2, "%s: Incorrect relocation type in jump reloc\n",
+ _dl_progname);
+ _dl_exit(1);
+ }
+
+ /* Address of jump instruction to fix up */
+ instr_addr = ((unsigned long)this_reloc->r_offset +
+ (unsigned long)tpnt->loadaddr);
+ got_addr = (char **)instr_addr;
+
+
+ /* Get the address of the GOT entry */
+ new_addr = _dl_find_hash(symname, tpnt->symbol_scope, tpnt, resolver);
+ if (!new_addr) {
+ new_addr = _dl_find_hash(symname, NULL, NULL, resolver);
+
+ if (new_addr)
+ return (unsigned long)new_addr;
+
+ _dl_dprintf(2, "%s: can't resolve symbol '%s'\n",
+ _dl_progname, symname);
+ _dl_exit(1);
+ }
+
+#ifdef __SUPPORT_LD_DEBUG__
+ if ((unsigned long)got_addr < 0x20000000) {
+ 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;
+
+ /* Now parse the relocation information */
+ rpnt = (ELF_RELOC *)(intptr_t)(rel_addr + tpnt->loadaddr);
+ rel_size = rel_size / sizeof(ELF_RELOC);
+
+ symtab = (Elf32_Sym *)(intptr_t)
+ (tpnt->dynamic_info[DT_SYMTAB] + tpnt->loadaddr);
+ strtab = (char *)(tpnt->dynamic_info[DT_STRTAB] + tpnt->loadaddr);
+
+ for (i = 0; i < rel_size; i++, rpnt++) {
+ int res;
+
+ symtab_index = ELF32_R_SYM(rpnt->r_info);
+
+ /* When the dynamic linker bootstrapped itself, it resolved
+ some symbols. Make sure we do not do them again */
+ if (!symtab_index && tpnt->libtype == program_interpreter)
+ continue;
+ if (symtab_index && tpnt->libtype == program_interpreter &&
+ _dl_symbol(strtab + symtab[symtab_index].st_name))
+ continue;
+
+#ifdef __SUPPORT_LD_DEBUG__
+ debug_sym(symtab,strtab,symtab_index);
+ debug_reloc(symtab,strtab,rpnt);
+#endif
+
+ 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 (res < 0) {
+ int reloc_type = ELF32_R_TYPE(rpnt->r_info);
+
+ _dl_dprintf(2, "can't handle reloc type "
+#ifdef __SUPPORT_LD_DEBUG__
+ "%s\n", _dl_reltypes(reloc_type)
+#else
+ "%x\n", reloc_type
+#endif
+ );
+
+ _dl_exit(-res);
+ } else if (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, lsb;
+ char *symname;
+ unsigned long *reloc_addr;
+ unsigned long symbol_addr;
+#ifdef __SUPPORT_LD_DEBUG__
+ unsigned long old_val;
+#endif
+
+ reloc_type = ELF32_R_TYPE(rpnt->r_info);
+ symtab_index = ELF32_R_SYM(rpnt->r_info);
+ symbol_addr = 0;
+ lsb = symtab[symtab_index].st_other & 4;
+ symname = strtab + symtab[symtab_index].st_name;
+ reloc_addr = (unsigned long *)(intptr_t)
+ (tpnt->loadaddr + (unsigned long)rpnt->r_offset);
+
+ if (symtab_index) {
+ int stb;
+
+ symbol_addr = (unsigned long)_dl_find_hash(symname, scope,
+ (reloc_type == R_SH_JMP_SLOT ? tpnt : NULL),
+ symbolrel);
+
+ /*
+ * 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.
+ */
+ stb = ELF32_ST_BIND(symtab[symtab_index].st_info);
+
+ if (stb == STB_GLOBAL && !symbol_addr) {
+#ifdef __SUPPORT_LD_DEBUG__
+ _dl_dprintf(2, "\tglobal symbol '%s' "
+ "already defined in '%s'\n",
+ symname, tpnt->libname);
+#endif
+ return 0;
+ }
+ }
+
+#ifdef __SUPPORT_LD_DEBUG__
+ old_val = *reloc_addr;
+#endif
+
+ switch (reloc_type) {
+ case R_SH_NONE:
+ break;
+ case R_SH_COPY:
+ /* handled later on */
+ break;
+ case R_SH_DIR32:
+ case R_SH_GLOB_DAT:
+ case R_SH_JMP_SLOT:
+ *reloc_addr = (symbol_addr + rpnt->r_addend) | lsb;
+ break;
+ case R_SH_REL32:
+ *reloc_addr = symbol_addr + rpnt->r_addend -
+ (unsigned long)reloc_addr;
+ break;
+ case R_SH_RELATIVE:
+ *reloc_addr = (unsigned long)tpnt->loadaddr + rpnt->r_addend;
+ break;
+ case R_SH_RELATIVE_LOW16:
+ case R_SH_RELATIVE_MEDLOW16:
+ {
+ unsigned long word, value;
+
+ word = (unsigned long)reloc_addr & ~0x3fffc00;
+ value = (unsigned long)tpnt->loadaddr + rpnt->r_addend;
+
+ if (reloc_type == R_SH_RELATIVE_MEDLOW16)
+ value >>= 16;
+
+ word |= (value & 0xffff) << 10;
+ *reloc_addr = word;
+
+ break;
+ }
+ case R_SH_IMM_LOW16:
+ case R_SH_IMM_MEDLOW16:
+ {
+ unsigned long word, value;
+
+ word = (unsigned long)reloc_addr & ~0x3fffc00;
+ value = (symbol_addr + rpnt->r_addend) | lsb;
+
+ if (reloc_type == R_SH_IMM_MEDLOW16)
+ value >>= 16;
+
+ word |= (value & 0xffff) << 10;
+ *reloc_addr = word;
+
+ break;
+ }
+ case R_SH_IMM_LOW16_PCREL:
+ case R_SH_IMM_MEDLOW16_PCREL:
+ {
+ unsigned long word, value;
+
+ word = (unsigned long)reloc_addr & ~0x3fffc00;
+ value = symbol_addr + rpnt->r_addend -
+ (unsigned long)reloc_addr;
+
+ if (reloc_type == R_SH_IMM_MEDLOW16_PCREL)
+ value >>= 16;
+
+ word |= (value & 0xffff) << 10;
+ *reloc_addr = word;
+
+ break;
+ }
+ default:
+ return -1; /*call _dl_exit(1) */
+ }
+
+#ifdef __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, symtab_index, lsb;
+ unsigned long *reloc_addr;
+#ifdef __SUPPORT_LD_DEBUG__
+ unsigned long old_val;
+#endif
+
+ reloc_type = ELF32_R_TYPE(rpnt->r_info);
+ symtab_index = ELF32_R_SYM(rpnt->r_info);
+ lsb = symtab[symtab_index].st_other & 4;
+ reloc_addr = (unsigned long *)(intptr_t)
+ (tpnt->loadaddr + (unsigned long)rpnt->r_offset);
+
+#ifdef __SUPPORT_LD_DEBUG__
+ old_val = *reloc_addr;
+#endif
+
+ switch (reloc_type) {
+ case R_SH_NONE:
+ break;
+ case R_SH_JMP_SLOT:
+ *reloc_addr += (unsigned long)tpnt->loadaddr | lsb;
+ break;
+ default:
+ return -1; /*call _dl_exit(1) */
+ }
+
+#ifdef __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;
+}
+
+/* This is done as a separate step, because there are cases where
+ information is first copied and later initialized. This results in
+ the wrong information being copied. Someone at Sun was complaining about
+ a bug in the handling of _COPY by SVr4, and this may in fact be what he
+ was talking about. Sigh. */
+
+/* No, there are cases where the SVr4 linker fails to emit COPY relocs
+ at all */
+static int _dl_do_copy(struct elf_resolve *tpnt, struct dyn_elf *scope,
+ ELF_RELOC *rpnt, Elf32_Sym *symtab, char *strtab)
+{
+ int reloc_type;
+ int symtab_index;
+ unsigned long *reloc_addr;
+ unsigned long symbol_addr;
+ char *symname;
+ int goof = 0;
+
+ reloc_addr = (unsigned long *)(intptr_t)
+ (tpnt->loadaddr + (unsigned long)rpnt->r_offset);
+ reloc_type = ELF32_R_TYPE(rpnt->r_info);
+
+ if (reloc_type != R_SH_COPY)
+ return 0;
+
+ symtab_index = ELF32_R_SYM(rpnt->r_info);
+ symbol_addr = 0;
+ symname = strtab + symtab[symtab_index].st_name;
+
+ if (symtab_index) {
+ symbol_addr = (unsigned long)
+ _dl_find_hash(symname, scope, NULL, copyrel);
+
+ if (!symbol_addr)
+ goof++;
+ }
+
+ if (!goof) {
+#ifdef __SUPPORT_LD_DEBUG__
+ if (_dl_debug_move)
+ _dl_dprintf(_dl_debug_file,
+ "\n%s move %x bytes from %x to %x",
+ symname, symtab[symtab_index].st_size,
+ symbol_addr, symtab[symtab_index].st_value);
+#endif
+
+ _dl_memcpy((char *)symtab[symtab_index].st_value,
+ (char *)symbol_addr, symtab[symtab_index].st_size);
+ }
+
+ return goof;
+}
+
+void _dl_parse_lazy_relocation_information(struct elf_resolve *tpnt,
+ unsigned long rel_addr, unsigned long rel_size, int type)
+{
+ _dl_parse(tpnt, NULL, rel_addr, rel_size, _dl_do_lazy_reloc);
+}
+
+int _dl_parse_relocation_information(struct elf_resolve *tpnt,
+ unsigned long rel_addr, unsigned long rel_size, int type)
+{
+ return _dl_parse(tpnt, tpnt->symbol_scope, rel_addr,
+ rel_size, _dl_do_reloc);
+}
+
+int _dl_parse_copy_information(struct dyn_elf *xpnt, unsigned long rel_addr,
+ unsigned long rel_size, int type)
+{
+ return _dl_parse(xpnt->dyn, xpnt->next, rel_addr,
+ rel_size, _dl_do_copy);
+}
+
--- /dev/null
+/* vi: set sw=8 ts=8: */
+/*
+ * Various assmbly language/system dependent hacks that are required
+ * so that we can minimize the amount of platform specific code.
+ */
+
+/*
+ * Define this if the system uses RELOCA.
+ */
+#define ELF_USES_RELOCA
+
+/*
+ * Get a pointer to the argv array. On many platforms this can be just
+ * the address if the first argument, on other platforms we need to
+ * do something a little more subtle here.
+ */
+#define GET_ARGV(ARGVP, ARGS) ARGVP = ((unsigned long *)ARGS)
+
+/*
+ * Initialization sequence for a GOT.
+ */
+#define INIT_GOT(GOT_BASE,MODULE) \
+{ \
+ GOT_BASE[2] = (unsigned long)_dl_linux_resolve; \
+ GOT_BASE[1] = (unsigned long)(MODULE); \
+}
+
+/*
+ * Here is a macro to perform a relocation. This is only used when
+ * bootstrapping the dynamic loader. RELP is the relocation that we
+ * are performing, REL is the pointer to the address we are relocating.
+ * SYMBOL is the symbol involved in the relocation, and LOAD is the
+ * load address.
+ */
+
+/*
+ * We need to do this stupidity here as the preprocessor will choke when
+ * SYMTAB is NULL if we do this in PERFORM_BOOTSTRAP_RELOC().
+ */
+
+#include <elf.h>
+
+static inline int __extract_lsb_from_symtab(Elf32_Sym *symtab)
+{
+ static int lsb = 0;
+
+ /* Check for SHmedia/SHcompact */
+ if (symtab)
+ lsb = symtab->st_other & 4;
+
+ return lsb;
+}
+
+/*
+ * While on the subject of stupidity, there appear to be some conflicts with
+ * regards to several relocation types as far as binutils is concerned
+ * (Barcelona and Madrid both appear to use an out of date elf.h, whereas
+ * native Catalonia has all of the necessary definitions. As a workaround,
+ * we'll just define them here for sanity..
+ */
+#ifndef R_SH_RELATIVE_LOW16
+# define R_SH_RELATIVE_LOW16 197
+# define R_SH_RELATIVE_MEDLOW16 198
+# define R_SH_IMM_LOW16 246
+# define R_SH_IMM_LOW16_PCREL 247
+# define R_SH_IMM_MEDLOW16 248
+# define R_SH_IMM_MEDLOW16_PCREL 249
+#endif
+
+#define PERFORM_BOOTSTRAP_RELOC(RELP,REL,SYMBOL,LOAD,SYMTAB) \
+ const unsigned int r_type = ELF32_R_TYPE((RELP)->r_info); \
+ int lsb = __extract_lsb_from_symtab(SYMTAB); \
+ \
+ switch (r_type) { \
+ case R_SH_REL32: \
+ *(REL) = (SYMBOL) + (RELP)->r_addend \
+ - (unsigned long)(REL); \
+ break; \
+ case R_SH_DIR32: \
+ case R_SH_GLOB_DAT: \
+ case R_SH_JMP_SLOT: \
+ *(REL) = ((SYMBOL) + (RELP)->r_addend) | lsb; \
+ break; \
+ case R_SH_RELATIVE: \
+ *(REL) = (LOAD) + (RELP)->r_addend; \
+ break; \
+ case R_SH_RELATIVE_LOW16: \
+ case R_SH_RELATIVE_MEDLOW16: \
+ { \
+ unsigned long word, value; \
+ \
+ word = (unsigned long)(REL) & ~0x3fffc00; \
+ value = (LOAD) + (RELP)->r_addend; \
+ \
+ if (r_type == R_SH_RELATIVE_MEDLOW16) \
+ value >>= 16; \
+ \
+ word |= (value & 0xffff) << 10; \
+ *(REL) = word; \
+ break; \
+ } \
+ case R_SH_IMM_LOW16: \
+ case R_SH_IMM_MEDLOW16: \
+ { \
+ unsigned long word, value; \
+ \
+ word = (unsigned long)(REL) & ~0x3fffc00; \
+ value = ((SYMBOL) + (RELP)->r_addend) | lsb; \
+ \
+ if (r_type == R_SH_IMM_MEDLOW16) \
+ value >>= 16; \
+ \
+ word |= (value & 0xffff) << 10; \
+ *(REL) = word; \
+ break; \
+ } \
+ case R_SH_IMM_LOW16_PCREL: \
+ case R_SH_IMM_MEDLOW16_PCREL: \
+ { \
+ unsigned long word, value; \
+ \
+ word = (unsigned long)(REL) & ~0x3fffc00; \
+ value = (SYMBOL) + (RELP)->r_addend \
+ - (unsigned long)(REL); \
+ \
+ if (r_type == R_SH_IMM_MEDLOW16_PCREL) \
+ value >>= 16; \
+ \
+ word |= (value & 0xffff) << 10; \
+ *(REL) = word; \
+ break; \
+ } \
+ case R_SH_NONE: \
+ break; \
+ default: \
+ SEND_STDERR("BOOTSTRAP_RELOC: unhandled reloc type "); \
+ SEND_NUMBER_STDERR(ELF32_R_TYPE((RELP)->r_info), 1); \
+ SEND_STDERR("REL, SYMBOL, LOAD: "); \
+ SEND_ADDRESS_STDERR(REL, 0); \
+ SEND_STDERR(", "); \
+ SEND_ADDRESS_STDERR(SYMBOL, 0); \
+ SEND_STDERR(", "); \
+ SEND_ADDRESS_STDERR(LOAD, 1); \
+ _dl_exit(1); \
+ }
+
+/*
+ * Transfer control to the user's application, once the dynamic loader
+ * is done. This routine has to exit the current function, then
+ * call the _dl_elf_main function.
+ */
+
+#define START() return _dl_elf_main;
+
+/* Here we define the magic numbers that this dynamic loader should accept */
+#define MAGIC1 EM_SH
+#undef MAGIC2
+/* Used for error messages */
+#define ELF_TARGET "sh64"
+
+struct elf_resolve;
+extern unsigned long _dl_linux_resolver(struct elf_resolve * tpnt, int reloc_entry);
+
+#define do_rem(result, n, base) result = (n % base)
+
+/* 4096 bytes alignment */
+#define PAGE_ALIGN 0xfffff000
+#define ADDR_ALIGN 0xfff
+#define OFFS_ALIGN 0x7ffff000
+
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