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fix x86_64 fe[gs]etround, analogous to nsz's x86 changes

This commit is contained in:
Rich Felker 2012-03-17 18:02:20 -04:00
parent d5e576c752
commit 9cb6878e74
1 changed files with 9 additions and 8 deletions
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17
src/fenv/x86_64/fenv.s
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@ -32,18 +32,19 @@ feraiseexcept:
.global fesetround .global fesetround
.type fesetround,@function .type fesetround,@function
fesetround: fesetround:
push %rax
xor %eax,%eax xor %eax,%eax
sub $32,%rsp mov %edi,%ecx
fnstenv (%rsp) fnstcw (%rsp)
andb $0xf3,1(%rsp) andb $0xf3,1(%rsp)
or %edi,(%rsp) or %ch,1(%rsp)
fldenv (%rsp) fldcw (%rsp)
stmxcsr (%rsp) stmxcsr (%rsp)
shl $3,%edi shl $3,%ch
andb $0x9f,1(%rsp) andb $0x9f,1(%rsp)
or %edi,(%rsp) or %ch,1(%rsp)
ldmxcsr (%rsp) ldmxcsr (%rsp)
add $32,%rsp pop %rcx
ret ret
.global fegetround .global fegetround
@ -53,7 +54,7 @@ fegetround:
stmxcsr (%rsp) stmxcsr (%rsp)
pop %rax pop %rax
shr $3,%eax shr $3,%eax
and $0xc,%ah and $0xc00,%eax
ret ret
.global fegetenv .global fegetenv