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runtime/linux/386: set FPU to 64-bit precision

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Fixes #550.

R=r
CC=golang-dev
https://golang.org/cl/3469044
This commit is contained in:
Russ Cox 2010-12-13 10:04:53 -05:00
parent 84713d46f6
commit cc1556d9a2
1 changed files with 8 additions and 0 deletions
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8
src/pkg/runtime/linux/386/rt0.s
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@ -5,5 +5,13 @@
// Darwin and Linux use the same linkage to main // Darwin and Linux use the same linkage to main
TEXT _rt0_386_linux(SB),7,$0 TEXT _rt0_386_linux(SB),7,$0
// Linux starts the FPU in extended double precision.
// Other operating systems use double precision.
// Change to double precision to match them,
// and to match other hardware that only has double.
PUSHL $0x27F
FLDCW 0(SP)
POPL AX
JMP _rt0_386(SB) JMP _rt0_386(SB)