Gitea Mirror Bot
80 lines
1.3 KiB
C
80 lines
1.3 KiB
C
/*++
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Copyright (c) Microsoft Corporation. All rights reserved.
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Licensed under the MIT License.
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Module Name:
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asmmacro.h
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Abstract:
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This module implements common macros for the assembly modules.
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--*/
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#if defined(__APPLE__)
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#define C_UNDERSCORE(symbol) _##symbol
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#else
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#define C_UNDERSCORE(symbol) symbol
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#endif
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/*++
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Macro Description:
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This macro emits the assembler directives to annotate a new function.
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Arguments:
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FunctionName - Supplies the name of the function.
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--*/
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.macro FUNCTION_ENTRY FunctionName
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.p2align 4
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#if defined(__APPLE__)
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.globl _\FunctionName\()
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_\FunctionName\():
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#else
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.globl \FunctionName\()
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.type \FunctionName\(),@function
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\FunctionName\():
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#endif
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.endm
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/*++
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Macro Description:
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This macro emits the code to load the global offset table address into the
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supplied register.
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Arguments:
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TargetReg - Specifies the target register.
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--*/
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.macro LoadGlobalOffsetTable, TargetReg
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//
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// The LLVM integrated assembler doesn't support the Intel syntax for OFFSET:
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//
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// add ebx,OFFSET _GLOBAL_OFFSET_TABLE_
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//
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// Workaround this by temporarily switching to AT&T syntax.
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//
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.att_syntax
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calll __x86.get_pc_thunk.\TargetReg\()
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addl $_GLOBAL_OFFSET_TABLE_,%e\TargetReg\()
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.intel_syntax noprefix
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.endm
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