Gitea Mirror Bot
173 lines
3.4 KiB
C
173 lines
3.4 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 generates an optimization for "add reg,128" which can instead
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be encoded as "sub reg,-128" to reduce code size by using a signed 8-bit
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value.
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Arguments:
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Register - Supplies the register to be added to.
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Immediate - Supplies the immediate to add to the register.
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--*/
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.macro add_immed Register, Immediate
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.if (\Immediate\() != 128)
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add \Register\(),\Immediate\()
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.else
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sub \Register\(),-\Immediate\() # smaller encoding
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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 conditionally emits the statement if Count is greater than or
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equal to Value.
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Arguments:
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Count - Supplies the variable used in the comparison.
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Value - Supplies the static used in the comparison.
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Statement - Supplies the statement to conditionally emit.
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--*/
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.macro EmitIfCountGE Count1, Value1, Statement
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.if (\Count1\() >= \Value1\())
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\Statement\()
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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 conditionally emits the statement if Count1 is equal to Value1
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and Count2 is equal to Value2.
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Arguments:
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Count1 - Supplies the variable used in the comparison.
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Value1 - Supplies the static used in the comparison.
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Count2 - Supplies the variable used in the comparison.
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Value2 - Supplies the static used in the comparison.
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Statement - Supplies the statement to conditionally emit.
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--*/
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.macro EmitIfCount2EQ Count1, Value1, Count2, Value2, Statement
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.if (\Count1\() == \Value1\()) && (\Count2\() == \Value2\())
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\Statement\()
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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 conditionally emits the statement if Count1 is greater than or
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equal to Value1 and Count2 is greater than or equal to Value2.
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Arguments:
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Count1 - Supplies the variable used in the comparison.
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Value1 - Supplies the static used in the comparison.
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Count2 - Supplies the variable used in the comparison.
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Value2 - Supplies the static used in the comparison.
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Statement - Supplies the statement to conditionally emit.
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--*/
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.macro EmitIfCount2GE Count1, Value1, Count2, Value2, Statement
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.if (\Count1\() >= \Value1\()) && (\Count2\() >= \Value2\())
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\Statement\()
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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 statement for each register listed in the register
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list. The statement can use RegItem to access the current register.
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Arguments:
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RegList - Supplies the list of registers.
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Statement - Supplies the statement to emit.
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--*/
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.macro EmitForEachRegister RegList, Statement
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.irp RegItem, \RegList\()
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\Statement\()
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.endr
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.endm
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