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* sysdeps/arm/sysdep.h: Define __USE_BX__ if bx is available.

Browse Source 
Use it instead of __THUMB_INTERWORK__.  Make RETINSTR take
	only a condition and a register.
	* sysdeps/arm/dl-machine.h: Use __USE_BX__ instead of
	__THUMB_INTERWORK__.
	(_dl_start_user): Use BX.
	* sysdeps/arm/strlen.S: Use DO_RET.
	* sysdeps/unix/arm/brk.S, sysdeps/unix/arm/fork.S,
	sysdeps/unix/arm/sysdep.S, sysdeps/unix/arm/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/arm/clone.S,
	sysdeps/unix/sysv/linux/arm/mmap.S,
	sysdeps/unix/sysv/linux/arm/mmap64.S,
	sysdeps/unix/sysv/linux/arm/socket.S,
	sysdeps/unix/sysv/linux/arm/sysdep.h,
	sysdeps/unix/sysv/linux/arm/vfork.S: Update uses of RETINSTR.
This commit is contained in:
Roland McGrath 2004-12-04 21:20:42 +00:00
parent 3f488b9cdd
commit 577e4aa1ec
17 changed files with 57 additions and 27 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
ChangeLog
View File

@ -1,3 +1,21 @@
2004-11-18 Daniel Jacobowitz <dan@codesourcery.com>
* sysdeps/arm/sysdep.h: Define __USE_BX__ if bx is available.
Use it instead of __THUMB_INTERWORK__. Make RETINSTR take
only a condition and a register.
* sysdeps/arm/dl-machine.h: Use __USE_BX__ instead of
__THUMB_INTERWORK__.
(_dl_start_user): Use BX.
* sysdeps/arm/strlen.S: Use DO_RET.
* sysdeps/unix/arm/brk.S, sysdeps/unix/arm/fork.S,
sysdeps/unix/arm/sysdep.S, sysdeps/unix/arm/sysdep.h: Likewise.
* sysdeps/unix/sysv/linux/arm/clone.S,
sysdeps/unix/sysv/linux/arm/mmap.S,
sysdeps/unix/sysv/linux/arm/mmap64.S,
sysdeps/unix/sysv/linux/arm/socket.S,
sysdeps/unix/sysv/linux/arm/sysdep.h,
sysdeps/unix/sysv/linux/arm/vfork.S: Update uses of RETINSTR.
2004-12-02 Roland McGrath <roland@redhat.com>
* extra-lib.mk (object-suffixes-$(lib)): Add .oS when

5
linuxthreads/ChangeLog
View File

@ -1,3 +1,8 @@
2004-11-18 Daniel Jacobowitz <dan@codesourcery.com>
* sysdeps/unix/sysv/linux/arm/sysdep-cancel.h: Update RETINSTR use.
* sysdeps/unix/sysv/linux/arm/vfork.S: Likewise.
2004-12-02 Roland McGrath <roland@redhat.com>
* Makefile (libpthread-nonshared): Variable removed.

2
linuxthreads/sysdeps/unix/sysv/linux/arm/sysdep-cancel.h
View File

@ -112,7 +112,7 @@ extern int __local_multiple_threads attribute_hidden;
# define MAYBE_SAVE_LR \
str lr, [sp, $-4]!;
# define PSEUDO_RET_MOV \
RETINSTR(movcc, pc, lr); \
RETINSTR(cc, lr); \
b PLTJMP(SYSCALL_ERROR)
# define PSEUDO_PROLOGUE
# else

4
linuxthreads/sysdeps/unix/sysv/linux/arm/vfork.S
View File

@ -46,7 +46,7 @@ ENTRY (__vfork)
swi __NR_vfork
cmn a1, #4096
RETINSTR(movcc, pc, lr)
RETINSTR(cc, lr)
#ifndef __ASSUME_VFORK_SYSCALL
/* Check if vfork syscall is known at all. */
@ -60,7 +60,7 @@ ENTRY (__vfork)
/* If we don't have vfork, fork is close enough. */
swi __NR_fork
cmn a1, #4096
RETINSTR(movcc, pc, lr)
RETINSTR(cc, lr)
#elif !defined __NR_vfork
# error "__NR_vfork not available and __ASSUME_VFORK_SYSCALL defined"
#endif

4
sysdeps/arm/dl-machine.h
View File

@ -123,7 +123,7 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
return lazy;
}
#if defined(__THUMB_INTERWORK__)
#if defined(__USE_BX__)
#define BX(x) "bx\t" #x
#else
#define BX(x) "mov\tpc, " #x
@ -293,7 +293,7 @@ _dl_start_user:\n\
ldr r0, .L_FINI_PROC\n\
add r0, sl, r0\n\
@ jump to the user_s entry point\n\
mov pc, r6\n\
" BX(r6) "\n\
.L_GET_GOT:\n\
.word _GLOBAL_OFFSET_TABLE_ - .L_GOT_GOT - 4\n\
.L_SKIP_ARGS:\n\

2
sysdeps/arm/strlen.S
View File

@ -68,6 +68,6 @@ Llastword: @ drop through to here once we find a
tstne r2, $0x00ff0000 @ (if first three all non-zero, 4th
addne r0, r0, $1 @ must be zero)
#endif
RETINSTR(mov,pc,lr)
DO_RET(lr)
END(strlen)
libc_hidden_builtin_def (strlen)

17
sysdeps/arm/sysdep.h
View File

@ -19,6 +19,11 @@
#include <sysdeps/generic/sysdep.h>
#if (!defined (__ARM_ARCH_2__) && !defined (__ARM_ARCH_3__) \
&& !defined (__ARM_ARCH_3M__) && !defined (__ARM_ARCH_4__))
# define __USE_BX__
#endif
#ifdef __ASSEMBLER__
/* Syntactic details of assembler. */
@ -50,20 +55,22 @@
#ifdef __APCS_32__
#define LOADREGS(cond, base, reglist...)\
ldm##cond base,reglist
#define RETINSTR(instr, regs...)\
instr regs
#ifdef __THUMB_INTERWORK__
#ifdef __USE_BX__
#define RETINSTR(cond, reg) \
bx##cond reg
#define DO_RET(_reg) \
bx _reg
#else
#define RETINSTR(cond, reg) \
mov##cond pc, reg
#define DO_RET(_reg) \
mov pc, _reg
#endif
#else /* APCS-26 */
#define LOADREGS(cond, base, reglist...)\
ldm##cond base,reglist^
#define RETINSTR(instr, regs...)\
instr##s regs
#define RETINSTR(cond, reg) \
mov##cond##s pc, reg
#define DO_RET(_reg) \
movs pc, _reg
#endif

2
sysdeps/unix/arm/brk.S
View File

@ -43,7 +43,7 @@ SYSCALL__ (brk, 1)
#endif
str r0, [r1]
mov r0, $0
RETINSTR(mov, pc, r14)
DO_RET (r14)
#ifdef PIC
1: .long _GLOBAL_OFFSET_TABLE_ - 2b - 8
_cb_addr:

2
sysdeps/unix/arm/fork.S
View File

@ -27,7 +27,7 @@ SYSCALL__ (fork, 0)
R0&-1==R0, and the child gets R0&0==0. */
sub r1, r1, $1
and r0, r0, r1
RETINSTR(mov, pc, r14)
DO_RET (r14)
PSEUDO_END (__fork)
libc_hidden_def (__fork)

4
sysdeps/unix/arm/sysdep.S
View File

@ -50,7 +50,7 @@ syscall_error:
ldr r1, 1f
str r0, [r1]
mvn r0, $0
RETINSTR(mov, pc, r14)
DO_RET (r14)
1: .long C_SYMBOL_NAME(errno)
#else
@ -60,7 +60,7 @@ syscall_error:
0: add r2, pc, r2
str r0, [r1, r2]
mvn r0, $0
RETINSTR(mov, pc, r14)
DO_RET (r14)
1: .word _GLOBAL_OFFSET_TABLE_ - 0b - 8
2: .word C_SYMBOL_NAME(errno)(GOTOFF)

2
sysdeps/unix/arm/sysdep.h
View File

@ -24,7 +24,7 @@
#ifdef __ASSEMBLER__
#define ret RETINSTR(mov, pc, r14)
#define ret DO_RET (r14)
#define MOVE(a,b) mov b,a
#endif

2
sysdeps/unix/sysv/linux/arm/clone.S
View File

@ -45,7 +45,7 @@ ENTRY(__clone)
swi SYS_ify(clone)
movs a1, a1
blt PLTJMP(C_SYMBOL_NAME(__syscall_error))
RETINSTR(movne, pc, lr)
RETINSTR(ne, lr)
@ pick the function arg and call address off the stack and execute
ldr r0, [sp, #4]

4
sysdeps/unix/sysv/linux/arm/mmap.S
View File

@ -51,7 +51,7 @@ ENTRY (__mmap)
ldr r5, [sp], #4
cmn r0, $4096
RETINSTR(movcc, pc, lr)
RETINSTR(cc, lr)
b PLTJMP(syscall_error)
.Linval:
@ -83,7 +83,7 @@ ENTRY (__mmap)
add sp, sp, #16
cmn r0, $4096
RETINSTR(movcc, pc, lr)
RETINSTR(cc, lr)
b PLTJMP(syscall_error);
#endif

4
sysdeps/unix/sysv/linux/arm/mmap64.S
View File

@ -43,12 +43,12 @@ ENTRY (__mmap64)
# ifdef __ASSUME_MMAP2_SYSCALL
ldr r4, [sp], #4
ldr r5, [sp], #4
RETINSTR(movcc, pc, lr)
RETINSTR(cc, lr)
b PLTJMP(syscall_error)
# else
ldrcc r4, [sp], #4
ldrcc r5, [sp], #4
RETINSTR(movcc, pc, lr)
RETINSTR(cc, lr)
cmn r0, $ENOSYS
bne .Lerror
/* The current kernel does not support mmap2. Fall back to plain

4
sysdeps/unix/sysv/linux/arm/socket.S
View File

@ -91,7 +91,7 @@ ENTRY (__socket)
/* r0 is < 0 if there was an error. */
cmn r0, $124
RETINSTR(movcc, pc, r14)
RETINSTR(cc, r14)
b PLTJMP(SYSCALL_ERROR)
#if defined NEED_CANCELLATION && defined CENABLE
@ -114,7 +114,7 @@ ENTRY (__socket)
/* r0 is < 0 if there was an error. */
cmn r0, $124
RETINSTR(movcc, pc, r14)
RETINSTR(cc, r14)
b PLTJMP(SYSCALL_ERROR)
#endif

4
sysdeps/unix/sysv/linux/arm/sysdep.h
View File

@ -54,7 +54,7 @@
cmn r0, $4096;
#define PSEUDO_RET \
RETINSTR(movcc, pc, lr); \
RETINSTR(cc, lr); \
b PLTJMP(SYSCALL_ERROR)
#undef ret
#define ret PSEUDO_RET
@ -71,7 +71,7 @@
DO_CALL (syscall_name, args);
#define PSEUDO_RET_NOERRNO \
RETINSTR(mov, pc, lr);
DO_RET (lr);
#undef ret_NOERRNO
#define ret_NOERRNO PSEUDO_RET_NOERRNO

4
sysdeps/unix/sysv/linux/arm/vfork.S
View File

@ -32,7 +32,7 @@ ENTRY (__vfork)
#ifdef __NR_vfork
swi __NR_vfork
cmn a1, #4096
RETINSTR(movcc, pc, lr)
RETINSTR(cc, lr)
# ifdef __ASSUME_VFORK_SYSCALL
b PLTJMP(C_SYMBOL_NAME(__syscall_error))
@ -47,7 +47,7 @@ ENTRY (__vfork)
/* If we don't have vfork, fork is close enough. */
swi __NR_fork
cmn a1, #4096
RETINSTR(movcc, pc, lr)
RETINSTR(cc, lr)
b PLTJMP(C_SYMBOL_NAME(__syscall_error))
#elif !defined __NR_vfork
# error "__NR_vfork not available and __ASSUME_VFORK_SYSCALL defined"