mirror of
https://github.com/netwide-assembler/nasm.git
synced 2025-09-22 10:43:39 -04:00
8dae3d681d
A pattern for XCHG was incompletely macroized. This caused a fallthrough to the next pattern, reversing the operands, but would probably have had generated incorrect code in at least some cases. Beef up the xchg test. Reported-by: E. C. Masloch <pushbx@ulukai.org> Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
152 lines
1.6 KiB
NASM
152 lines
1.6 KiB
NASM
;Testname=unoptimized; Arguments=-fbin -oxchg.bin -O0; Files=stdout stderr xchg.bin
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;Testname=optimized; Arguments=-fbin -oxchg.bin -Ox; Files=stdout stderr xchg.bin
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%macro x 2
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xchg %1,%2
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xchg %2,%1
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xchg %2,%2
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xchg %2,MEM
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xchg MEM,%2
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%endmacro
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bits 16
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%define MEM [bx]
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x al,al
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x al,cl
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x al,dl
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x al,bl
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x al,ah
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x al,ch
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x al,dh
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x al,bh
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x ax,ax
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x ax,cx
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x ax,dx
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x ax,bx
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x ax,sp
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x ax,bp
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x ax,si
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x ax,di
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x bx,dx
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x cx,dx
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x eax,eax
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x eax,ecx
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x eax,edx
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x eax,ebx
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x eax,esp
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x eax,ebp
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x eax,esi
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x eax,edi
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x ebx,edx
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x ecx,edx
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bits 32
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%define MEM [ebx]
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align 64
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x al,al
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x al,cl
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x al,dl
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x al,bl
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x al,ah
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x al,ch
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x al,dh
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x al,bh
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x ax,ax
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x ax,cx
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x ax,dx
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x ax,bx
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x ax,sp
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x ax,bp
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x ax,si
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x ax,di
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x bx,dx
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x cx,dx
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x eax,eax
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x eax,ecx
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x eax,edx
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x eax,ebx
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x eax,esp
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x eax,ebp
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x eax,esi
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x eax,edi
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x ebx,edx
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x ecx,edx
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bits 64
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%define MEM [rbx]
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align 64
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x al,al
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x al,cl
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x al,dl
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x al,bl
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x al,ah
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x al,ch
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x al,dh
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x al,bh
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x al,spl
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x al,bpl
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x al,sil
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x al,dil
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x al,r8b
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x al,r9b
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x al,r10b
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x al,r11b
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x al,r12b
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x al,r13b
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x al,r14b
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x al,r15b
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x ax,ax
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x ax,cx
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x ax,dx
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x ax,bx
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x ax,sp
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x ax,bp
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x ax,si
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x ax,di
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x ax,r8w
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x ax,r9w
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x ax,r10w
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x ax,r11w
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x ax,r12w
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x ax,r13w
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x ax,r14w
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x ax,r15w
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x bx,dx
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x cx,dx
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x eax,eax
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x eax,ecx
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x eax,edx
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x eax,ebx
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x eax,esp
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x eax,ebp
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x eax,esi
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x eax,edi
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x eax,r8d
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x eax,r9d
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x eax,r10d
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x eax,r11d
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x eax,r12d
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x eax,r13d
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x eax,r14d
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x eax,r15d
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x ebx,edx
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x ecx,edx
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x rax,rax
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x rax,rcx
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x rax,rdx
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x rax,rbx
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x rax,rsp
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x rax,rbp
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x rax,rsi
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x rax,rdi
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x rax,r8
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x rax,r9
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x rax,r10
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x rax,r11
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x rax,r12
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x rax,r13
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x rax,r14
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x rax,r15
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x rbx,rdx
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x rcx,rdx
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