Date: Sun, 27 Apr 2003 15:54:39 -0700 (PDT) From: Peter Wemm <peter@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 29902 for review Message-ID: <200304272254.h3RMsdsq076523@repoman.freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=29902 Change 29902 by peter@peter_daintree on 2003/04/27 15:54:18 make pipe(2) work with syscall for now. int 0x80 preserves all registers except for the return values. syscall does not. This can be simplified when I make the fast_syscall handler preserve some scratch registers. Affected files ... .. //depot/projects/hammer/lib/libc/x86_64/sys/pipe.S#3 edit Differences ... ==== //depot/projects/hammer/lib/libc/x86_64/sys/pipe.S#3 (text+ko) ==== @@ -42,9 +42,20 @@ #include "SYS.h" -SYSCALL(pipe) - movq 8(%rsp),%rcx /* XXX wrong!! %rdi!! */ + .weak _pipe + .set _pipe,__sys_pipe + .weak pipe + .set pipe,__sys_pipe +ENTRY(__sys_pipe) + pushq %rdi + mov $SYS_pipe,%rax + KERNCALL + jb 1f + popq %rcx movq %rax,(%rcx) movq %rdx,8(%rcx) movq $0,%rax ret +1: + popq %rdi + jmp PIC_PLT(HIDENAME(cerror)
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