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@@ -36,33 +36,12 @@ |
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36
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:from :eval :to :result) edx)
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(:temporary (:sc single-stack) temp-single)
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(:temporary (:sc double-stack) temp-double)
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- #+core-math
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40
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- (:temporary (:sc unsigned-stack) save-fpu-cw)
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- #+core-math
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- (:temporary (:sc unsigned-stack) fpu-cw)
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- #+core-math
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- (:temporary (:sc unsigned-reg :offset esi-offset) temp-cw)
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(:node-var node)
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(:vop-var vop)
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(:save-p t)
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(:ignore args ecx edx)
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(:guard (backend-featurep :sse2))
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(:generator 0
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- #+core-math
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- (progn
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- ;; Save the x87 FPU control word. Then modify it to set the
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- ;; precision bits to 3 for 64-bit mantissas for 80-bit
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- ;; arithmetic. If we don't some of some special functions
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- ;; return incorrect values because the x87 precision was set to
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- ;; single.
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- (inst fnstcw save-fpu-cw)
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- (move temp-cw save-fpu-cw)
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- (inst and temp-cw (dpb 0 (byte 2 8) #xffff)) ; Zap the precision control bits
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- (inst or temp-cw (dpb 3 (byte 3 8) 0)) ; Set precision control bits
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- (move fpu-cw temp-cw)
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- (inst fldcw fpu-cw) ; New CW
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- )
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-
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(cond ((policy node (> space speed))
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(move eax function)
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(inst call (make-fixup (extern-alien-name "call_into_c") :foreign)))
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@@ -84,10 +63,7 @@ |
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(inst movss xmm0-tn (ea-for-sf-stack temp-single)))
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85
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(double-reg
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(inst fstpd (ea-for-df-stack temp-double))
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87
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- (inst movsd xmm0-tn (ea-for-df-stack temp-double)))))
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- ;; Restore the x87 FPU control settings
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- #+core-math
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- (inst fldcw save-fpu-cw)))
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+ (inst movsd xmm0-tn (ea-for-df-stack temp-double)))))))
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91
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67
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92
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(define-vop (alloc-number-stack-space)
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93
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(:info amount)
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