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54 lines
1.9 KiB
C
Vendored
54 lines
1.9 KiB
C
Vendored
/*===--------------- x86gprintrin.h - X86 GPR intrinsics ------------------===
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*
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* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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* See https://llvm.org/LICENSE.txt for license information.
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* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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*
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*===-----------------------------------------------------------------------===
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*/
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#ifndef __X86GPRINTRIN_H
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#define __X86GPRINTRIN_H
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#if !(defined(_MSC_VER) || defined(__SCE__)) || __has_feature(modules) || \
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defined(__HRESET__)
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#include <hresetintrin.h>
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#endif
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#if !(defined(_MSC_VER) || defined(__SCE__)) || __has_feature(modules) || \
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defined(__UINTR__)
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#include <uintrintrin.h>
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#endif
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#if !(defined(_MSC_VER) || defined(__SCE__)) || __has_feature(modules) || \
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defined(__CRC32__)
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#include <crc32intrin.h>
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#endif
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#if defined(__i386__)
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#define __FULLBX "ebx"
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#define __TMPGPR "eax"
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#else
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// When in 64-bit target, the 32-bit operands generate a 32-bit result,
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// zero-extended to a 64-bit result in the destination general-purpose,
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// It means "mov x %ebx" will clobber the higher 32 bits of rbx, so we
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// should preserve the 64-bit register rbx.
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#define __FULLBX "rbx"
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#define __TMPGPR "rax"
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#endif
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#define __MOVEGPR(__r1, __r2) "mov {%%"__r1 ", %%"__r2 "|"__r2 ", "__r1"};"
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#define __SAVE_GPRBX __MOVEGPR(__FULLBX, __TMPGPR)
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#define __RESTORE_GPRBX __MOVEGPR(__TMPGPR, __FULLBX)
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#define __SSC_MARK(__Tag) \
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__asm__ __volatile__( __SAVE_GPRBX \
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"mov {%0, %%ebx|ebx, %0}; " \
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".byte 0x64, 0x67, 0x90; " \
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__RESTORE_GPRBX \
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::"i"(__Tag) \
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: __TMPGPR );
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#endif /* __X86GPRINTRIN_H */
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