Date: Tue, 4 Mar 2014 19:41:16 +0000 (UTC) From: Jung-uk Kim <jkim@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r262746 - head/sys/amd64/amd64 Message-ID: <201403041941.s24JfG1O076864@svn.freebsd.org>
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Author: jkim Date: Tue Mar 4 19:41:16 2014 New Revision: 262746 URL: http://svnweb.freebsd.org/changeset/base/262746 Log: Remove dead code since r230426, fix a comment, and tidy up. Reported by: jhb MFC after: 3 days Modified: head/sys/amd64/amd64/cpu_switch.S Modified: head/sys/amd64/amd64/cpu_switch.S ============================================================================== --- head/sys/amd64/amd64/cpu_switch.S Tue Mar 4 18:27:00 2014 (r262745) +++ head/sys/amd64/amd64/cpu_switch.S Tue Mar 4 19:41:16 2014 (r262746) @@ -345,8 +345,8 @@ ENTRY(savectx) movq %r14,PCB_R14(%rdi) movq %r15,PCB_R15(%rdi) - movq %cr0,%rsi - movq %rsi,PCB_CR0(%rdi) + movq %cr0,%rax + movq %rax,PCB_CR0(%rdi) movq %cr2,%rax movq %rax,PCB_CR2(%rdi) movq %cr3,%rax @@ -409,8 +409,6 @@ ENTRY(savectx) sldt PCB_LDT(%rdi) str PCB_TR(%rdi) -2: movq %rsi,%cr0 /* The previous %cr0 is saved in %rsi. */ - movl $1,%eax ret END(savectx) @@ -550,12 +548,12 @@ ENTRY(resumectx) END(resumectx) /* - * Wrapper around fpusave to care about TS0_CR. + * Wrapper around fpusave to care about CR0_TS. */ ENTRY(ctx_fpusave) - movq %cr0,%rsi + movq %cr0,%rax clts call fpusave - movq %rsi,%cr0 + movq %rax,%cr0 ret END(ctx_fpusave)
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