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- global _start
- section .data
- align 16
- controlword:
- dw 0
- dwordmxcsr:
- dw 0
- dword0:
- dd 1000.0
- dword1:
- dd 5.0
- dword2:
- dd 3000.0
- dwSNaN:
- dd __SNaN__
- dwQNaN:
- dd __QNaN__
- ; Moves EFLAGS into specified register
- %macro moveflags 1
- pushf
- and dword [esp], 0x45
- pop eax
- movd %1, eax
- %endmacro
- %include "header.inc"
- movd xmm0, [dword0]
- ; Equal
- ucomiss xmm0, [dword0]
- moveflags mm0 ; [ZF] = 100000
- ; Less than
- ucomiss xmm0, [dword1]
- moveflags mm1 ; [CF] = 000001
- ; Greater than
- ucomiss xmm0, [dword2]
- moveflags mm2 ; [] = 000000
- ; Unordered: Quiet NaN
- movd xmm1, [dwQNaN]
- ucomiss xmm0, xmm1
- moveflags mm3 ; [ZF][PF][CF] = 100101
- ; Check #I exception
- stmxcsr [dwordmxcsr]
- movd mm4, [dwordmxcsr]
- ; Unordered: Signaling NaN
- movd xmm1, [dwSNaN]
- ucomiss xmm0, xmm1
- moveflags mm5 ; [ZF][PF][CF] = 100101
- ; Check #I exception
- stmxcsr [dwordmxcsr]
- movd mm6, [dwordmxcsr]
- %include "footer.inc"
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