21 lines
353 B
ArmAsm
21 lines
353 B
ArmAsm
.global feclearexcept
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.type feclearexcept,@function
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feclearexcept:
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# maintain exceptions in the sse mxcsr, clear x87 exceptions
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mov %edi,%ecx
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and $0x3f,%ecx
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fnstsw %ax
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test %eax,%ecx
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jz 1f
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fnclex
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1: stmxcsr -8(%rsp)
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and $0x3f,%eax
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or %eax,-8(%rsp)
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test %ecx,-8(%rsp)
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jz 1f
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not %ecx
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and %ecx,-8(%rsp)
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ldmxcsr -8(%rsp)
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1: xor %eax,%eax
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ret
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