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| author | Maxim Yurchuk <maxim-yurchuk@ydb.tech> | 2024-10-18 20:31:38 +0300 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-10-18 20:31:38 +0300 |
| commit | 2a74bac2d2d3bccb4e10120f1ead805640ec9dd0 (patch) | |
| tree | 047e4818ced5aaf73f58517629e5260b5291f9f0 /contrib/libs/cxxsupp/builtins/aarch64/chkstk.S | |
| parent | 2d9656823e9521d8c29ea4c9a1d0eab78391abfc (diff) | |
| parent | 3d834a1923bbf9403cd4a448e7f32b670aa4124f (diff) | |
| download | ydb-2a74bac2d2d3bccb4e10120f1ead805640ec9dd0.tar.gz | |
Merge pull request #10502 from ydb-platform/mergelibs-241016-1210
Library import 241016-1210
Diffstat (limited to 'contrib/libs/cxxsupp/builtins/aarch64/chkstk.S')
| -rw-r--r-- | contrib/libs/cxxsupp/builtins/aarch64/chkstk.S | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/contrib/libs/cxxsupp/builtins/aarch64/chkstk.S b/contrib/libs/cxxsupp/builtins/aarch64/chkstk.S new file mode 100644 index 0000000000..01f90366f0 --- /dev/null +++ b/contrib/libs/cxxsupp/builtins/aarch64/chkstk.S @@ -0,0 +1,35 @@ +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception + +#include "../assembly.h" + +// __chkstk routine +// This routine is windows specific. +// http://msdn.microsoft.com/en-us/library/ms648426.aspx + +// This clobbers registers x16 and x17. +// Does not modify any memory or the stack pointer. + +// mov x15, #256 // Number of bytes of stack, in units of 16 byte +// bl __chkstk +// sub sp, sp, x15, lsl #4 + +#ifdef __aarch64__ + +#define PAGE_SIZE 4096 + + .p2align 2 +DEFINE_COMPILERRT_FUNCTION(__chkstk) + lsl x16, x15, #4 + mov x17, sp +1: + sub x17, x17, #PAGE_SIZE + subs x16, x16, #PAGE_SIZE + ldr xzr, [x17] + b.gt 1b + + ret +END_COMPILERRT_FUNCTION(__chkstk) + +#endif // __aarch64__ |