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Preserve all 128 bits of xmm6 and xmm7

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git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.2.x@829 632fc199-4ca6-4c93-a231-07263d6284db
This commit is contained in:
DRC
2012-04-26 19:50:37 +00:00
parent d4c15e103c
commit 4f24016bde
2 changed files with 8 additions and 4 deletions
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4
ChangeLog.txt
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@@ -11,6 +11,10 @@ decompression, the unused byte of the decompressed pixels was not being set to
0xFF. This has been fixed. TJUnitTest has also been extended to test for the
correct behavior of the colorspace extensions when merged upsampling is used.
[3] Fixed a bug whereby the libjpeg-turbo SSE2 SIMD code would not preserve the
upper 64 bits of xmm6 and xmm7 on Win64 platforms, which violated the Win64
calling conventions.
1.2.0
=====

8
simd/jsimdext.inc
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@@ -322,15 +322,15 @@ const_base:
push rsi
push rdi
sub rsp, SIZEOF_XMMWORD
movlpd XMMWORD [rsp], xmm6
movaps XMMWORD [rsp], xmm6
sub rsp, SIZEOF_XMMWORD
movlpd XMMWORD [rsp], xmm7
movaps XMMWORD [rsp], xmm7
%endmacro
%imacro uncollect_args 0
movlpd xmm7, XMMWORD [rsp]
movaps xmm7, XMMWORD [rsp]
add rsp, SIZEOF_XMMWORD
movlpd xmm6, XMMWORD [rsp]
movaps xmm6, XMMWORD [rsp]
add rsp, SIZEOF_XMMWORD
pop rdi
pop rsi