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Formerly unix/sysv/sco3.2.4/__waitpid.S.~2~

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This commit is contained in:
Roland McGrath 1993-05-21 18:24:40 +00:00
parent d8bcf7d3b4
commit d5d34291df
1 changed files with 14 additions and 2 deletions
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16
sysdeps/unix/sysv/sco3.2.4/waitpid.S
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@ -18,5 +18,17 @@ Cambridge, MA 02139, USA. */
#include <sysdep.h>
SYSCALL__ (waitpid, 3)
ret
ENTRY (__waitpid)
/* The `waitpid' system call is distinguished from plain
`wait' by setting lots of bits in the processor flags. */
pushfl /* Push the flags word. */
popl %eax /* Pop it into the accumulator. */
orl $0x8c4, %eax /* Set lots of bits. */
pushl $eax /* Push the new flags word. */
popfl /* Pop it into the flags. */
DO_CALL (wait, 2)
movl 4(%esp), scratch /* Put status pointer in scratch register. */
testl scratch, scratch /* Is it non-nil? */
je null
movl r1, (scratch) /* Yes; store the status there. */
null: ret