Date: Fri, 4 Apr 2003 21:38:21 -0800 (PST) From: Peter Wemm <peter@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 28177 for review Message-ID: <200304050538.h355cL54015745@repoman.freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=28177 Change 28177 by peter@peter_overcee on 2003/04/04 21:37:23 convert su*, nuke bcmp for a C version (todo) Affected files ... .. //depot/projects/hammer/sys/x86_64/x86_64/support.s#12 edit Differences ... ==== //depot/projects/hammer/sys/x86_64/x86_64/support.s#12 (text+ko) ==== @@ -283,18 +283,18 @@ * Write a byte (word, longword) to user memory */ ENTRY(suword) - movl PCPU(CURPCB),%ecx - movl $fusufault,PCB_ONFAULT(%ecx) - movl 4(%esp),%edx + movq PCPU(CURPCB),%rcx + movq $fusufault,PCB_ONFAULT(%rcx) + movq 8(%rsp),%edx - cmpl $VM_MAXUSER_ADDRESS-4,%edx /* verify address validity */ + cmpq $VM_MAXUSER_ADDRESS-4,%rdx /* verify address validity */ ja fusufault - movl 8(%esp),%eax - movl %eax,(%edx) - xorl %eax,%eax - movl PCPU(CURPCB),%ecx - movl %eax,PCB_ONFAULT(%ecx) + movl 16(%rsp),%rax + movl %eax,(%rdx) + xorq %rax,%rax + movq PCPU(CURPCB),%rcx + movq %rax,PCB_ONFAULT(%rcx) ret ENTRY(suword32) @@ -304,36 +304,36 @@ * suword16 - MP SAFE */ ENTRY(suword16) - movl PCPU(CURPCB),%ecx - movl $fusufault,PCB_ONFAULT(%ecx) - movl 4(%esp),%edx + movq PCPU(CURPCB),%rcx + movq $fusufault,PCB_ONFAULT(%rcx) + movq 8(%rsp),%rdx - cmpl $VM_MAXUSER_ADDRESS-2,%edx /* verify address validity */ + cmpq $VM_MAXUSER_ADDRESS-2,%rdx /* verify address validity */ ja fusufault - movw 8(%esp),%ax - movw %ax,(%edx) - xorl %eax,%eax - movl PCPU(CURPCB),%ecx /* restore trashed register */ - movl %eax,PCB_ONFAULT(%ecx) + movw 16(%rsp),%ax + movw %ax,(%rdx) + xorq %rax,%rax + movq PCPU(CURPCB),%rcx /* restore trashed register */ + movq %rax,PCB_ONFAULT(%rcx) ret /* * subyte - MP SAFE */ ENTRY(subyte) - movl PCPU(CURPCB),%ecx - movl $fusufault,PCB_ONFAULT(%ecx) - movl 4(%esp),%edx + movq PCPU(CURPCB),%rcx + movq $fusufault,PCB_ONFAULT(%rcx) + movq 8(%rsp),%rdx - cmpl $VM_MAXUSER_ADDRESS-1,%edx /* verify address validity */ + cmpq $VM_MAXUSER_ADDRESS-1,%rdx /* verify address validity */ ja fusufault - movb 8(%esp),%al - movb %al,(%edx) - xorl %eax,%eax - movl PCPU(CURPCB),%ecx /* restore trashed register */ - movl %eax,PCB_ONFAULT(%ecx) + movb 18(%rsp),%al + movb %al,(%rdx) + xorq %rax,%rax + movq PCPU(CURPCB),%rcx /* restore trashed register */ + movq %rax,PCB_ONFAULT(%rcx) ret /* @@ -450,34 +450,6 @@ popl %esi ret -ENTRY(bcmp) - pushl %edi - pushl %esi - movl 12(%esp),%edi - movl 16(%esp),%esi - movl 20(%esp),%edx - xorl %eax,%eax - - movl %edx,%ecx - shrl $2,%ecx - cld /* compare forwards */ - repe - cmpsl - jne 1f - - movl %edx,%ecx - andl $3,%ecx - repe - cmpsb - je 2f -1: - incl %eax -2: - popl %esi - popl %edi - ret - - /* * Handling of special 386 registers and descriptor tables etc */
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