00ebbedd1c
MASM specifies that all variable definitions are redefinable, except for EQU definitions to expressions. (TEXTEQU is unspecified, but appears to be fully redefinable as well.) Also, in practice, ML.EXE allows redefinitions where the value doesn't change. Make variable redefinition possible for text macros, suppressing expansion if written as the first argument to an EQU or TEXTEQU directive. Reviewed By: thakis Differential Revision: https://reviews.llvm.org/D103993
77 lines
1.6 KiB
NASM
77 lines
1.6 KiB
NASM
; RUN: llvm-ml -filetype=s %s /Fo - | FileCheck %s
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.data
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; <var> = <expression> can be redefined at any time.
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assigned_number = 1
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t1_original BYTE assigned_number
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assigned_number = 1
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t1_reset BYTE assigned_number
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assigned_number = 2
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t1_changed BYTE assigned_number
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; CHECK-LABEL: t1_original:
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; CHECK-NEXT: .byte 1
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; CHECK-LABEL: t1_reset:
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; CHECK-NEXT: .byte 1
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; CHECK-LABEL: t1_changed:
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; CHECK-NEXT: .byte 2
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; <var> EQU <expression> can be redundantly set, but can't be changed.
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equated_number equ 3
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t2_original BYTE equated_number
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equated_number equ 3
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t2_reset BYTE equated_number
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; CHECK-LABEL: t2_original:
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; CHECK-NEXT: .byte 3
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; CHECK-LABEL: t2_reset:
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; CHECK-NEXT: .byte 3
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; <var> EQU <text> can be redefined at any time.
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equated_text equ <4, 5>
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t3_original BYTE equated_text
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equated_text equ <4, 5>
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t3_reset BYTE equated_text
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equated_text equ <5, 6>
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t3_changed BYTE equated_text
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; CHECK-LABEL: t3_original:
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; CHECK-NEXT: .byte 4
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; CHECK-NEXT: .byte 5
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; CHECK-LABEL: t3_reset:
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; CHECK-NEXT: .byte 4
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; CHECK-NEXT: .byte 5
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; CHECK-LABEL: t3_changed:
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; CHECK-NEXT: .byte 5
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; CHECK-NEXT: .byte 6
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; <var> TEXTEQU <text> can be redefined at any time.
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textequated_text textequ <7, 8>
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t4_original BYTE textequated_text
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textequated_text textequ <7, 8>
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t4_reset BYTE textequated_text
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textequated_text textequ <9, 10>
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t4_changed BYTE textequated_text
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; CHECK-LABEL: t4_original:
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; CHECK-NEXT: .byte 7
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; CHECK-NEXT: .byte 8
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; CHECK-LABEL: t4_reset:
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; CHECK-NEXT: .byte 7
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; CHECK-NEXT: .byte 8
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; CHECK-LABEL: t4_changed:
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; CHECK-NEXT: .byte 9
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; CHECK-NEXT: .byte 10
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.code
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end
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