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2002-10-06 Franz Sirl <Franz.Sirl-kernel@lauterbach.com>

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* sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep.h (INLINE_SYSCALL):
	Add all necessary register outputs for syscall-clobbered registers.
This commit is contained in:
Roland McGrath 2002-10-11 07:20:46 +00:00
parent db7ffaa304
commit 704bb2fd8e
1 changed files with 46 additions and 31 deletions
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77
sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep.h
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@ -37,52 +37,67 @@
# include <errno.h>
# undef INLINE_SYSCALL
# define INLINE_SYSCALL(name, nr, args...) \
({ \
long ret, err; \
LOADARGS_##nr(name, args); \
__asm __volatile ("sc\n\t" \
"mfcr %1\n\t" \
: "=r" (r3), "=r" (err) \
: ASM_INPUT_##nr \
: "cc", "memory"); \
ret = r3; \
if (err & 1 << 28) \
{ \
__set_errno (ret); \
ret = -1L; \
} \
ret; \
# define INLINE_SYSCALL(name, nr, args...) \
({ \
register long r0 __asm__ ("r0"); \
register long r3 __asm__ ("r3"); \
register long r4 __asm__ ("r4"); \
register long r5 __asm__ ("r5"); \
register long r6 __asm__ ("r6"); \
register long r7 __asm__ ("r7"); \
register long r8 __asm__ ("r8"); \
register long r9 __asm__ ("r9"); \
register long r10 __asm__ ("r10"); \
register long r11 __asm__ ("r11"); \
register long r12 __asm__ ("r12"); \
long ret, err; \
LOADARGS_##nr(name, args); \
__asm__ __volatile__ \
("sc\n\t" \
"mfcr %0" \
: "=&r" (r0), \
"=&r" (r3), "=&r" (r4), "=&r" (r5), "=&r" (r6), "=&r" (r7), \
"=&r" (r8), "=&r" (r9), "=&r" (r10), "=&r" (r11), "=&r" (r12) \
: ASM_INPUT_##nr \
: "cc", "memory"); \
err = r0; \
ret = r3; \
if (err & (1 << 28)) \
{ \
__set_errno (ret); \
ret = -1L; \
} \
ret; \
})
# define LOADARGS_0(name) \
register long r0 __asm__ ("r0") = __NR_##name; \
register long r3 __asm__ ("r3")
r0 = __NR_##name
# define LOADARGS_1(name, arg1) \
LOADARGS_0(name) = (long) (arg1)
LOADARGS_0(name); \
r3 = (long) (arg1)
# define LOADARGS_2(name, arg1, arg2) \
LOADARGS_1(name, arg1); \
register long r4 __asm__ ("r4") = (long) (arg2)
r4 = (long) (arg2)
# define LOADARGS_3(name, arg1, arg2, arg3) \
LOADARGS_2(name, arg1, arg2); \
register long r5 __asm__ ("r5") = (long) (arg3)
r5 = (long) (arg3)
# define LOADARGS_4(name, arg1, arg2, arg3, arg4) \
LOADARGS_3(name, arg1, arg2, arg3); \
register long r6 __asm__ ("r6") = (long) (arg4)
r6 = (long) (arg4)
# define LOADARGS_5(name, arg1, arg2, arg3, arg4, arg5) \
LOADARGS_4(name, arg1, arg2, arg3, arg4); \
register long r7 __asm__ ("r7") = (long) (arg5)
r7 = (long) (arg5)
# define LOADARGS_6(name, arg1, arg2, arg3, arg4, arg5, arg6) \
LOADARGS_5(name, arg1, arg2, arg3, arg4, arg5); \
register long r8 __asm__ ("r8") = (long) (arg6)
r8 = (long) (arg6)
# define ASM_INPUT_0 "r" (r0)
# define ASM_INPUT_1 ASM_INPUT_0, "0" (r3)
# define ASM_INPUT_2 ASM_INPUT_1, "r" (r4)
# define ASM_INPUT_3 ASM_INPUT_2, "r" (r5)
# define ASM_INPUT_4 ASM_INPUT_3, "r" (r6)
# define ASM_INPUT_5 ASM_INPUT_4, "r" (r7)
# define ASM_INPUT_6 ASM_INPUT_5, "r" (r8)
# define ASM_INPUT_0 "0" (r0)
# define ASM_INPUT_1 ASM_INPUT_0, "1" (r3)
# define ASM_INPUT_2 ASM_INPUT_1, "2" (r4)
# define ASM_INPUT_3 ASM_INPUT_2, "3" (r5)
# define ASM_INPUT_4 ASM_INPUT_3, "4" (r6)
# define ASM_INPUT_5 ASM_INPUT_4, "5" (r7)
# define ASM_INPUT_6 ASM_INPUT_5, "6" (r8)
#endif /* __ASSEMBLER__ */