ifeq ($(TARGET_ARCH),cris)
CPU_LDFLAGS-$(CONFIG_CRIS)+=-mcrislinux
+ CPU_LDFLAGS-$(CONFIG_CRISV32)+=-mcrislinux
CPU_CFLAGS-$(CONFIG_CRIS)+=-mlinux
PICFLAG:=-fpic
PIEFLAG_NAME:=-fpie
These are the possible settings:
- CRIS Generic support for Axis' CRIS architecture.
+ - CRISv32 Support for Axis' CRISv32 architecture.
config CONFIG_CRIS
select ARCH_HAS_MMU
bool "CRIS"
+config CONFIG_CRISV32
+ select ARCH_HAS_MMU
+ bool "CRISv32"
+
endchoice
#define R_390_NUM 61
+/* CRIS flags. */
+#define EF_CRIS_VARIANT_MASK 0x0000000e
+#define EF_CRIS_VARIANT_ANY_V0_V10 0x00000000
+#define EF_CRIS_VARIANT_V32 0x00000002
+#define EF_CRIS_VARIANT_COMMON_V10_V32 0x00000004
+
/* CRIS relocations. */
#define R_CRIS_NONE 0
#define R_CRIS_8 1
/* This code fixes the stack pointer so that the dynamic linker
* can find argc, argv and auxvt (Auxillary Vector Table). */
+#ifdef __arch_v32
+
+asm("" \
+" .text\n" \
+" .globl _start\n" \
+" .type _start,@function\n" \
+"_start:\n" \
+" move.d $sp,$r10\n" \
+" lapc _dl_start,$r9\n" \
+" jsr $r9\n" \
+" nop\n" \
+" moveq 0,$r8\n" \
+" jump $r10\n" \
+" move $r8,$srp\n" \
+" .size _start,.-_start\n" \
+" .previous\n" \
+);
+
+#else
+
asm("" \
" .text\n" \
" .globl _start\n" \
" .type _start,@function\n" \
"_start:\n" \
-" move.d $sp,$r10\n" \
-" move.d $pc,$r9\n" \
-" add.d _dl_start - ., $r9\n" \
-" jsr $r9\n" \
-" moveq 0,$r8\n" \
-" move $r8,$srp\n" \
-" jump $r10\n" \
+" move.d $sp,$r10\n" \
+" move.d $pc,$r9\n" \
+" add.d _dl_start - ., $r9\n" \
+" jsr $r9\n" \
+" moveq 0,$r8\n" \
+" move $r8,$srp\n" \
+" jump $r10\n" \
" .size _start,.-_start\n" \
" .previous\n" \
);
+#endif /* __arch_v32 */
/* Get a pointer to the argv array. On many platforms this can be just
* the address if the first argument, on other platforms we need to
{
Elf32_Addr gotaddr_diff;
+#ifdef __arch_v32
+ extern char ___CRISv32_dummy[] __asm__ ("_dl_start");
+
+ __asm__ ("addo.w _dl_start:GOT16,$r0,$acr\n\t"
+ "lapc _dl_start,%0\n\t"
+ "sub.d [$acr],%0"
+ /* For v32, we need to force GCC to have R0 loaded with
+ _GLOBAL_OFFSET_TABLE_ at this point, which might not
+ otherwise have happened in the caller. (For v10, it's
+ loaded for non-global variables too, so we don't need
+ anything special there.) We accomplish this by faking the
+ address of a global variable (as seen by GCC) as input to
+ the asm; that address calculation goes through the GOT.
+ Use of this function happens before we've filled in the
+ GOT, so the address itself will not be correctly
+ calculated, therefore we don't use any symbol whose
+ address may be re-used later on. Let's just reuse the
+ _dl_start symbol, faking it as a global by renaming it as
+ another variable through an asm. */
+ : "=r" (gotaddr_diff)
+ : "g" (___CRISv32_dummy)
+ : "acr");
+#else
__asm__ ("sub.d [$r0+_dl_start:GOT16],$r0,%0\n\t"
"add.d _dl_start:GOTOFF,%0" : "=r" (gotaddr_diff));
+#endif
return gotaddr_diff;
}
.globl _dl_linux_resolve
.type _dl_linux_resolve,@function
+#ifdef __arch_v32
+
+_dl_linux_resolve:
+ subq 4,$sp
+ move.d $r0,[$sp]
+ subq 4,$sp
+ move.d $r13,[$sp]
+ subq 4,$sp
+ move.d $r12,[$sp]
+ subq 4,$sp
+ move.d $r11,[$sp]
+ subq 4,$sp
+ addoq 5*4,$sp,$acr
+ move.d $r10,[$sp]
+ subq 4,$sp
+ move $mof,$r10
+ move.d $r9,[$sp]
+ subq 4,$sp
+ move.d [$acr],$r11
+ move $srp,[$sp]
+ lapc _GLOBAL_OFFSET_TABLE_,$r0
+ move.d _dl_linux_resolver:PLTG,$r9
+ add.d $r0,$r9
+ jsr $r9
+ nop
+ move.d $r10,$acr
+ move [$sp+],$srp
+ move.d [$sp+],$r9
+ move.d [$sp+],$r10
+ move.d [$sp+],$r11
+ move.d [$sp+],$r12
+ move.d [$sp+],$r13
+ move.d [$sp+],$r0
+ jump $acr
+ addq 4,$sp
+
+#else
+
_dl_linux_resolve:
- push $r13
- push $r12
- push $r11
- push $r10
- push $r9
- push $r0
- push $srp
- move.d [$sp+7*4],$r11
- move $mof,$r10
+ push $r13
+ push $r12
+ push $r11
+ push $r10
+ push $r9
+ push $r0
+ push $srp
+ move.d [$sp+7*4],$r11
+ move $mof,$r10
#ifdef __PIC__
- move.d $pc,$r0
- sub.d .:GOTOFF,$r0
- move.d _dl_linux_resolver:PLTG,$r9
- add.d $r0,$r9
- jsr $r9
+ move.d $pc,$r0
+ sub.d .:GOTOFF,$r0
+ move.d _dl_linux_resolver:PLTG,$r9
+ add.d $r0,$r9
+ jsr $r9
#else
- jsr _dl_linux_resolver
+ jsr _dl_linux_resolver
#endif
- move.d $r10,[$sp+7*4]
- pop $srp
- pop $r0
- pop $r9
- pop $r10
- pop $r11
- pop $r12
- pop $r13
- jump [$sp+]
+ move.d $r10,[$sp+7*4]
+ pop $srp
+ pop $r0
+ pop $r9
+ pop $r10
+ pop $r11
+ pop $r12
+ pop $r13
+ jump [$sp+]
+
+#endif /* __arch_v32 */
.size _dl_linux_resolve, . - _dl_linux_resolve
/* longjmp for CRIS.
- Copyright (C) 2001 Free Software Foundation, Inc.
+ Copyright (C) 2001, 2003 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
#define _ASM
#include <bits/setjmp.h>
+ .syntax no_register_prefix
+
/* Saving and restoring CCR is meaningless, so we don't do it. */
ENTRY (__longjmp)
/* Note that r10 = jmp_buf, r11 = retval. */
- move [$r10+16*4],$srp
- test.d $r11
+#ifdef __arch_v32
+
+ /* We don't restore the call-clobbered registers for v32;
+ their space (corresponding to v10) is now defined as
+ reserved. */
+ movem [r10],r9
+ addq 14*4,r10
+ cmpq 0,r11
+ beq 0f
+ move.d [r10+],sp
+
+ move.d r11,r9
+0:
+ move.d [r10+],acr
+ jump acr
+ move [r10],srp
+
+#else
+
+ move [r10+16*4],srp
+ test.d r11
beq 0f /* Already a 1 in place. */
nop
/* Offset for r9, the return value (see setjmp). */
- move.d $r11,[$r10+6*4]
+ move.d r11,[r10+6*4]
0:
- movem [$r10],$pc
+ movem [r10],pc
+
+#endif
END (__longjmp)
libc_hidden_def(__longjmp)
#define B921600 0010005
#define B1843200 0010006
#define B6250000 0010007
+#ifdef __arch_v32
+#define B12500000 0010010
+#define __MAX_BAUD B12500000
+#else
#define __MAX_BAUD B6250000
+#endif
#ifdef __USE_MISC
# define CIBAUD 002003600000 /* input baud rate (not used) */
# define CMSPAR 010000000000 /* mark or space (stick) parity */
-/* Copyright (C) 2001 Free Software Foundation, Inc.
+/* Copyright (C) 2001, 2003 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
Boston, MA 02111-1307, USA. */
#include <features.h>
-#include <asm/errno.h>
#include <sys/syscall.h>
#include "sysdep.h"
+#define _ERRNO_H 1
+#include <bits/errno.h>
/* int clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg); */
ENTRY (clone)
/* Sanity check arguments: No NULL function pointers. Allow a NULL
stack pointer though; it makes the kernel allocate stack. */
- test.d r10
+ cmpq 0,r10
beq 1f
nop
/* We need to muck with a few registers. */
- movem r1,[sp=sp-8]
+ subq 8,sp
+ movem r1,[sp]
/* Save the function pointer and argument. We can't save them
onto the new stack since it can be NULL. */
/* Do the system call. */
movu.w SYS_ify (clone),r9
break 13
- test.d r10
+ cmpq 0,r10
beq .Lthread_start
nop
/* Terminate frame pointers here. */
moveq 0,r8
+#ifdef __arch_v32
+ /* Is this the right place for an argument? */
+ jsr r0
+ move.d r1,r10
+#else
/* I've told you once. */
move.d r1,r10
jsr r0
+#endif
SETUP_PIC
PLTCALL (HIDDEN_JUMPTARGET(_exit))
/* Die horribly. */
- test.d [6809]
+ move.d 6809,r13
+ test.d [r13]
/* Stop the unstoppable. */
9:
/* setjmp for CRIS.
- Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
+ Copyright (C) 2001, 2002, 2003 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
Boston, MA 02111-1307, USA. */
#include "sysdep.h"
-#define _ASM
#define _SETJMP_H
+#define _ASM
#include <bits/setjmp.h>
.syntax no_register_prefix
ENTRY (__sigsetjmp)
.Local__sigsetjmp:
+
+#ifdef __arch_v32
+
+ moveq 1,r9
+ move.d r10,r12
+ addq 14*4,r12
+ movem r9,[r10]
+ lapc 0f,r13
+ move.d sp,[r12+]
+ move.d r13,[r12+]
+ move srp,[r12+]
+
+#else
+
moveq 1,r9
movem sp,[r10+1*4]
#ifdef __PIC__
#endif
move.d r9,[r10]
move srp,[r10+16*4]
+
+#endif
+
+/* Saving and restoring CCR is meaningless, so we don't do it. */
+
+/* Saving registers would complicate the implementation, but we
+ can get away with not setting up R0 here since we know that
+ __sigjmp_save is a local symbol; it doesn't have a PLT (which
+ would have required GOT in R0 at the time of the jump). */
PLTJUMP (__sigjmp_save)
0: /* This is where longjmp returns. (Don't use "ret" - it's a macro. */
Ret
ba .Local__sigsetjmp
moveq 1,r11
END (setjmp)
-
-/*
-weak_extern (__setjmp)
-weak_extern (_setjmp)
-weak_extern (setjmp)
-*/
-/* Copyright (C) 2001, 2004 Free Software Foundation, Inc.
+/* Copyright (C) 2001, 2003, 2004 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
/* Make syscall (callno, ...) into a system call. */
ENTRY (syscall)
+#ifdef __arch_v32
+ subq 4,sp
+ move.d r10,r9
+ move srp,[sp]
+ addoq 8,sp,acr
+ move.d r11,r10
+ move [acr],mof
+ addoq 12,sp,acr
+ move.d r12,r11
+ move [acr],srp
+ addoq 4,sp,acr
+ move.d r13,r12
+ move.d [acr],r13
+ break 13
+ cmps.w -4096,r10
+ bhs 0f
+ move [sp+],srp
+ Ret
+ nop
+#else
push srp
move.d r10,r9
move.d r11,r10
pop srp
Ret
nop
+#endif
PSEUDO_END (syscall)
-/* Copyright (C) 2001 Free Software Foundation, Inc.
+/* Copyright (C) 2001, 2003 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
.type C_SYMBOL_NAME(errno),@object
.lcomm C_SYMBOL_NAME(errno),4
+ .weak errno
errno = _errno
- /* weak_alias (errno, _errno) */
-
-
/* The syscall stubs jump here when they detect an error, bot for PIC and
non-PIC. */
neg.d r10,r10
#ifdef __UCLIBC_HAS_THREADS__
- push r10
- push srp
+ subq 4,sp
+ move.d r10,[sp]
+ subq 4,sp
+ move srp,[sp]
/* Note that __syscall_error is only visible within this library,
and no-one passes it on as a pointer, so can assume that R0 (GOT
pointer) is correctly set up. */
- PLTCALL (__errno_location)
+ PLTCALL (HIDDEN_JUMPTARGET(__errno_location))
- pop srp
- pop r11
+ move [sp+],srp
+ move.d [sp+],r11
move.d r11,[r10]
#else /* not __UCLIBC_HAS_THREADS__ */
+#ifdef __arch_v32
+# ifdef __PIC__
+ addo.d C_SYMBOL_NAME(errno:GOT),r0,acr
+ move.d [acr],r9
+ move.d r10,[r9]
+# else /* not __PIC__ */
+ lapc C_SYMBOL_NAME(errno),acr
+ move.d r10,[r9]
+# endif /* not __PIC__ */
+#else /* not __arch_v32 */
# ifdef __PIC__
move.d [r0+C_SYMBOL_NAME(errno:GOT)],r9
move.d r10,[r9]
# else
move.d r10,[C_SYMBOL_NAME(errno)]
# endif
+#endif /* not __arch_v32 */
#endif /* __UCLIBC_HAS_THREADS__ */
#ifdef __PIC__
moveq -1,r10
Ret
- pop r0
+ move.d [sp+],r0
#else
Ret
moveq -1,r10
#define END(sym)
#endif
+#undef SYS_ify
+#define SYS_ify(syscall_name) (__NR_##syscall_name)
+
#ifdef __ASSEMBLER__
+#undef SYS_ify
+#define SYS_ify(syscall_name) __NR_##syscall_name
+
/* Syntactic details of assembly-code. */
/* It is *not* generally true that "ELF uses byte-counts for .align, most
/* The non-PIC jump is preferred, since it does not stall, and does not
invoke generation of a PLT. These macros assume that $r0 is set up as
GOT register. */
+#ifdef __arch_v32
+#ifdef __PIC__
+#define PLTJUMP(_x) \
+ ba C_SYMBOL_NAME (_x):PLT @ \
+ nop
+
+#define PLTCALL(_x) \
+ bsr C_SYMBOL_NAME (_x):PLT @ \
+ nop
+
+#define SETUP_PIC \
+ subq 4,$sp @ \
+ move.d $r0,[$sp] @ \
+ lapc _GLOBAL_OFFSET_TABLE_,$r0
+
+#define TEARDOWN_PIC move.d [$sp+],$r0
+#else
+#define PLTJUMP(_x) \
+ ba C_SYMBOL_NAME (_x) @ \
+ nop
+
+#define PLTCALL(_x) \
+ bsr C_SYMBOL_NAME (_x) @ \
+ nop
+
+#define SETUP_PIC
+#define TEARDOWN_PIC
+#endif
+
+#else
+
#ifdef __PIC__
#define PLTJUMP(_x) \
add.d C_SYMBOL_NAME (_x):PLT,$pc
#define TEARDOWN_PIC
#endif
+#endif /* __arch_v32 */
+
/* Define an entry point visible from C. */
#define ENTRY(name) \
.text @ \
ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME (name) @ \
ASM_TYPE_DIRECTIVE (C_SYMBOL_NAME (name), function) @ \
.align ALIGNARG (2) @ \
- C_LABEL(name) @ \
- CALL_MCOUNT
+ C_LABEL(name)
#undef END
#define END(name) \
PLTJUMP (__syscall_error) @ \
END (name)
-/* If compiled for profiling, do nothing */
-#define CALL_MCOUNT /* Do nothing. */
-
-
#endif /* __ASSEMBLER__ */
#endif /* _SYSDEP_H_ */
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
-#ifndef _PT_MACHINE_H
-#define _PT_MACHINE_H 1
-
#ifndef PT_EI
# define PT_EI extern inline __attribute__ ((always_inline))
#endif
-extern long int testandset (int *spinlock);
-extern int __compare_and_swap (long int *p, long int oldval, long int newval);
-
PT_EI long int
testandset (int *spinlock)
{
/* Note the use of a dummy output of *spinlock to expose the write. The
memory barrier is to stop *other* writes being moved past this code. */
+
+#ifdef __arch_v32
+ __asm__ __volatile__("clearf p\n"
+ "0:\n\t"
+ "movu.b [%2],%0\n\t"
+ "ax\n\t"
+ "move.b %3,[%2]\n\t"
+ "bcs 0b\n\t"
+ "clearf p"
+ : "=&r" (ret), "=m" (*spinlock)
+ : "r" (spinlock), "r" ((int) 1), "m" (*spinlock)
+ : "memory");
+#else /* not __arch_v32 */
__asm__ __volatile__("clearf\n"
"0:\n\t"
"movu.b [%2],%0\n\t"
"bwf 0b\n\t"
"clearf"
: "=&r" (ret), "=m" (*spinlock)
- : "r" (spinlock), "r" ((int) 1)
+ : "r" (spinlock), "r" ((int) 1), "m" (*spinlock)
: "memory");
+#endif /* __arch_v32 */
return ret;
}
I don't trust register variables, so let's do this the safe way. */
#define CURRENT_STACK_FRAME \
({ char *sp; __asm__ ("move.d $sp,%0" : "=rm" (sp)); sp; })
-
-#endif /* pt-machine.h */
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