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| author | luoqi <luoqi@FreeBSD.org> | 1998-09-18 05:50:52 +0000 |
|---|---|---|
| committer | luoqi <luoqi@FreeBSD.org> | 1998-09-18 05:50:52 +0000 |
| commit | c43759f857ec8b1421c9f549fad00641aa25275b (patch) | |
| tree | 3917cbebd0fbc19021c66b9bc36f8cfd087f67f9 /lib/libc/i386 | |
| parent | 37eda2089dc2b2c57ca9f92e5518a0b7028313fd (diff) | |
| download | FreeBSD-src-c43759f857ec8b1421c9f549fad00641aa25275b.zip FreeBSD-src-c43759f857ec8b1421c9f549fad00641aa25275b.tar.gz | |
Simplify implementation and eliminate a register preservation problem.
Reviewed by: Bruce Evans <bde@zeta.org.au>
Diffstat (limited to 'lib/libc/i386')
| -rw-r--r-- | lib/libc/i386/sys/Ovfork.S | 34 |
1 files changed, 10 insertions, 24 deletions
diff --git a/lib/libc/i386/sys/Ovfork.S b/lib/libc/i386/sys/Ovfork.S index fbba946..6a1d5b9 100644 --- a/lib/libc/i386/sys/Ovfork.S +++ b/lib/libc/i386/sys/Ovfork.S @@ -33,12 +33,12 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * $Id: Ovfork.S,v 1.8 1998/09/12 22:03:08 dt Exp $ + * $Id: Ovfork.S,v 1.9 1998/09/13 20:32:45 luoqi Exp $ */ #if defined(SYSLIBC_RCS) && !defined(lint) .text - .asciz "$Id: Ovfork.S,v 1.8 1998/09/12 22:03:08 dt Exp $" + .asciz "$Id: Ovfork.S,v 1.9 1998/09/13 20:32:45 luoqi Exp $" #endif /* SYSLIBC_RCS and not lint */ #include "DEFS.h" @@ -60,27 +60,13 @@ ENTRY(vfork) popl %ecx /* my rta into ecx */ lea SYS_vfork,%eax KERNCALL - jb verror -vforkok: - cmpl $0,%edx /* child process? */ - jne child /* yes */ - jmp parent - - .globl CNAME(__error) - .type CNAME(__error),@function -verror: - pushl %eax -#ifdef PIC - call PIC_PLT(CNAME(__error)) -#else - call CNAME(__error) -#endif - popl %edx - movl %edx,(%eax) - movl $-1,%eax - movl $-1,%edx - jmp %ecx -child: + jb 2f + cmpl $0,%edx /* parent process? */ + je 1f /* yes */ movl $0,%eax -parent: +1: jmp %ecx +2: + pushl %ecx + PIC_PROLOGUE + jmp PIC_PLT(HIDENAME(cerror)) |
