Date: Wed, 19 Dec 2018 21:04:07 +0000 (UTC) From: Mateusz Guzik <mjg@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r342239 - stable/12/sys/amd64/amd64 Message-ID: <201812192104.wBJL476J095701@repo.freebsd.org>
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Author: mjg Date: Wed Dec 19 21:04:06 2018 New Revision: 342239 URL: https://svnweb.freebsd.org/changeset/base/342239 Log: MFC r341719 amd64: stop re-reading curpc on subyte/suword Modified: stable/12/sys/amd64/amd64/support.S Directory Properties: stable/12/ (props changed) Modified: stable/12/sys/amd64/amd64/support.S ============================================================================== --- stable/12/sys/amd64/amd64/support.S Wed Dec 19 21:03:17 2018 (r342238) +++ stable/12/sys/amd64/amd64/support.S Wed Dec 19 21:04:06 2018 (r342239) @@ -1148,7 +1148,6 @@ ENTRY(suword16_nosmap) movw %si,(%rdi) xorl %eax,%eax - movq PCPU(CURPCB),%rcx /* restore trashed register */ movq %rax,PCB_ONFAULT(%rcx) POP_FRAME_POINTER ret @@ -1167,7 +1166,6 @@ ENTRY(suword16_smap) movw %si,(%rdi) clac xorl %eax,%eax - movq PCPU(CURPCB),%rcx /* restore trashed register */ movq %rax,PCB_ONFAULT(%rcx) POP_FRAME_POINTER ret @@ -1185,7 +1183,6 @@ ENTRY(subyte_nosmap) movl %esi,%eax movb %al,(%rdi) xorl %eax,%eax - movq PCPU(CURPCB),%rcx /* restore trashed register */ movq %rax,PCB_ONFAULT(%rcx) POP_FRAME_POINTER ret @@ -1205,7 +1202,6 @@ ENTRY(subyte_smap) movb %al,(%rdi) clac xorl %eax,%eax - movq PCPU(CURPCB),%rcx /* restore trashed register */ movq %rax,PCB_ONFAULT(%rcx) POP_FRAME_POINTER ret
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