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Formerly unix/bsd/sequent/i386/__sigvec.S.~2~

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This commit is contained in:
Roland McGrath 1993-05-15 21:57:10 +00:00
parent 65385dc84c
commit 11bd41d2a3
1 changed files with 8 additions and 8 deletions
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16
sysdeps/unix/bsd/sequent/i386/sigvec.S
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@ -28,18 +28,18 @@ trampoline:
call %eax /* Call the handler, address in %eax. */
addl $8, %esp /* Pop signum & code off the stack. */
/* __sigreturn will restore the context, and never return here. */
jsr C_SYMBOL_NAME (__sigreturn)
call C_SYMBOL_NAME (__sigreturn)
.globl syscall_error
ENTRY (__sigvec)
/* Put the address of the trampoline in a scratch register. */
mov $trampoline, %edx
/* Now exchange this register with the top of the stack,
wherein now lies the return PC. */
xchg 0(%esp), %edx
mov %esp, %ecx /* Point the syscall at the arguments. */
mov $trampoline, scratch
/* Now exchange this register with the fourth word on the stack,
where the fourth argument to the system call would go. */
xchg 16(%esp), scratch
ARGS_4 /* Point the syscall at the arguments. */
DO_CALL (sigvec, 4) /* Do the system call. */
/* Exchange again, restoring the return PC. */
xchg 0(%esp), %edx
/* Exchange again, restoring the stack word. */
xchg 16(%esp), scratch
jb syscall_error /* Check for error. */
ret