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------------------------------------------------------------------------ r242539 | rnk | 2015-07-17 09:23:05 -0700 (Fri, 17 Jul 2015) | 14 lines compiler-rt: add support for mingw-w64 in builtins The is so that we can avoid using libgcc and use compiler-rt with mingw-w64. Related driver patch http://reviews.llvm.org/D11077 I have tested this with mingw-w64 and everything seems to be in order. I also sent this patch to the mingw-w64 mailing list for them to look at. Patch by Martell Malone. Differential Revision: http://reviews.llvm.org/D11085 ------------------------------------------------------------------------ ------------------------------------------------------------------------ r242540 | rnk | 2015-07-17 09:31:59 -0700 (Fri, 17 Jul 2015) | 1 line Add missing chkstk.S files from r242539 ------------------------------------------------------------------------ llvm-svn: 243059
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// This file is dual licensed under the MIT and the University of Illinois Open | ||
// Source Licenses. See LICENSE.TXT for details. | ||
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#include "../assembly.h" | ||
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// _chkstk routine | ||
// This routine is windows specific | ||
// http://msdn.microsoft.com/en-us/library/ms648426.aspx | ||
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#ifdef __i386__ | ||
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.text | ||
.balign 4 | ||
DEFINE_COMPILERRT_FUNCTION(__chkstk_ms) | ||
push %ecx | ||
push %eax | ||
cmp $0x1000,%eax | ||
lea 12(%esp),%ecx | ||
jb 1f | ||
2: | ||
sub $0x1000,%ecx | ||
orl $0,(%ecx) | ||
sub $0x1000,%eax | ||
cmp $0x1000,%eax | ||
ja 2b | ||
1: | ||
sub %eax,%ecx | ||
orl $0,(%ecx) | ||
pop %eax | ||
pop %ecx | ||
ret | ||
END_COMPILERRT_FUNCTION(__chkstk_ms) | ||
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#endif // __i386__ |
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// This file is dual licensed under the MIT and the University of Illinois Open | ||
// Source Licenses. See LICENSE.TXT for details. | ||
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#include "../assembly.h" | ||
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// _chkstk routine | ||
// This routine is windows specific | ||
// http://msdn.microsoft.com/en-us/library/ms648426.aspx | ||
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// Notes from r227519 | ||
// MSVC x64s __chkstk and cygmings ___chkstk_ms do not adjust %rsp | ||
// themselves. It also does not clobber %rax so we can reuse it when | ||
// adjusting %rsp. | ||
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#ifdef __x86_64__ | ||
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.text | ||
.balign 4 | ||
DEFINE_COMPILERRT_FUNCTION(___chkstk_ms) | ||
push %rcx | ||
push %rax | ||
cmp $0x1000,%rax | ||
lea 24(%rsp),%rcx | ||
jb 1f | ||
2: | ||
sub $0x1000,%rcx | ||
orl $0,(%rcx) | ||
sub $0x1000,%rax | ||
cmp $0x1000,%rax | ||
ja 2b | ||
1: | ||
sub %rax,%rcx | ||
orl $0,(%rcx) | ||
pop %rax | ||
pop %rcx | ||
ret | ||
END_COMPILERRT_FUNCTION(___chkstk_ms) | ||
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#endif // __x86_64__ |