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| author | Anton Samokhvalov <pg83@yandex.ru> | 2022-02-10 16:45:17 +0300 |
|---|---|---|
| committer | Daniil Cherednik <dcherednik@yandex-team.ru> | 2022-02-10 16:45:17 +0300 |
| commit | d3a398281c6fd1d3672036cb2d63f842d2cb28c5 (patch) | |
| tree | dd4bd3ca0f36b817e96812825ffaf10d645803f2 /contrib/libs/cxxsupp/builtins/x86_64/chkstk.S | |
| parent | 72cb13b4aff9bc9cf22e49251bc8fd143f82538f (diff) | |
| download | ydb-d3a398281c6fd1d3672036cb2d63f842d2cb28c5.tar.gz | |
Restoring authorship annotation for Anton Samokhvalov <pg83@yandex.ru>. Commit 2 of 2.
Diffstat (limited to 'contrib/libs/cxxsupp/builtins/x86_64/chkstk.S')
| -rw-r--r-- | contrib/libs/cxxsupp/builtins/x86_64/chkstk.S | 78 |
1 files changed, 39 insertions, 39 deletions
diff --git a/contrib/libs/cxxsupp/builtins/x86_64/chkstk.S b/contrib/libs/cxxsupp/builtins/x86_64/chkstk.S index de315176c1..4149ac63d9 100644 --- a/contrib/libs/cxxsupp/builtins/x86_64/chkstk.S +++ b/contrib/libs/cxxsupp/builtins/x86_64/chkstk.S @@ -1,39 +1,39 @@ -// This file is dual licensed under the MIT and the University of Illinois Open -// Source Licenses. See LICENSE.TXT for details. - -#include "../assembly.h" - -// _chkstk routine -// This routine is windows specific -// http://msdn.microsoft.com/en-us/library/ms648426.aspx - -// 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. - -#ifdef __x86_64__ - -.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 - test %rcx,(%rcx) - sub $0x1000,%rax - cmp $0x1000,%rax - ja 2b -1: - sub %rax,%rcx - test %rcx,(%rcx) - pop %rax - pop %rcx - ret -END_COMPILERRT_FUNCTION(___chkstk_ms) - -#endif // __x86_64__ +// This file is dual licensed under the MIT and the University of Illinois Open +// Source Licenses. See LICENSE.TXT for details. + +#include "../assembly.h" + +// _chkstk routine +// This routine is windows specific +// http://msdn.microsoft.com/en-us/library/ms648426.aspx + +// 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. + +#ifdef __x86_64__ + +.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 + test %rcx,(%rcx) + sub $0x1000,%rax + cmp $0x1000,%rax + ja 2b +1: + sub %rax,%rcx + test %rcx,(%rcx) + pop %rax + pop %rcx + ret +END_COMPILERRT_FUNCTION(___chkstk_ms) + +#endif // __x86_64__ |