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2002-01-09  Richard Henderson  <rth@redhat.com>

	* sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h: Assume only
	ret follows pseudo, and thus avoid branch-to-branch in cancel
	case.  Use SYSCALL_ERROR_LABEL.
This commit is contained in:
Ulrich Drepper
2003-01-12 19:29:11 +00:00
parent 76426e0247
commit addb5f3176
5 changed files with 263 additions and 222 deletions
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15
linuxthreads/sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h
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@ -33,6 +33,9 @@
# define PSEUDO_PROF
# endif
/* ??? Assumes that nothing comes between PSEUDO and PSEUDO_END
besides "ret". */
# undef PSEUDO
# define PSEUDO(name, syscall_name, args) \
.globl name; \
@ -47,7 +50,7 @@ __LABEL(name) \
bne t0, $pseudo_cancel; \
lda v0, SYS_ify(syscall_name); \
call_pal PAL_callsys; \
bne a3, $syscall_error; \
bne a3, SYSCALL_ERROR_LABEL; \
__LABEL($pseudo_ret) \
.subsection 2; \
__LABEL($pseudo_cancel) \
@ -59,13 +62,17 @@ __LABEL($pseudo_cancel) \
lda v0, SYS_ify(syscall_name); \
call_pal PAL_callsys; \
stq v0, 8(sp); \
stq a3, 16(sp); \
bne a3, $multi_error; \
CDISABLE; \
ldq ra, 0(sp); \
ldq v0, 8(sp); \
addq sp, 64, sp; \
ret; \
__LABEL($multi_error) \
CDISABLE; \
ldq ra, 0(sp); \
ldq v0, 8(sp); \
ldq a3, 16(sp); \
addq sp, 64, sp; \
beq a3, $pseudo_ret; \
__LABEL($syscall_error) \
SYSCALL_ERROR_HANDLER; \
END(name); \