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The second argument is not a float, so the "abi.h" abstraction 

doesn't work.
Open-code the argument handling instead.
Should fix the ldexp() bug reported by Brendon Costa in port-amd64.
This commit is contained in:
drochner 2006-03-21 11:35:21 +00:00
parent a1cdcab3c8
commit 0e514dc492
2 changed files with 30 additions and 16 deletions
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23
lib/libm/arch/i387/s_scalbn.S
View File

@ -5,15 +5,22 @@
#include <machine/asm.h>
#include "abi.h"
RCSID("$NetBSD: s_scalbn.S,v 1.7 2003/07/26 19:25:03 salo Exp $")
RCSID("$NetBSD: s_scalbn.S,v 1.8 2006/03/21 11:35:21 drochner Exp $")
ENTRY(scalbn)
XMM_TWO_ARG_DOUBLE_PROLOGUE
fildl ARG_DOUBLE_TWO
fldl ARG_DOUBLE_ONE
#ifdef __x86_64__
movl %edi,-12(%rsp)
fildl -12(%rsp)
movsd %xmm0,-8(%rsp)
fldl -8(%rsp)
fscale
fstp %st(1) /* bug fix for fp stack overflow */
XMM_DOUBLE_EPILOGUE
fstpl -8(%rsp)
movsd -8(%rsp),%xmm0
fstp %st(0)
#else
fildl 12(%esp)
fldl 4(%esp)
fscale
fstp %st(1) /* clean up stack */
#endif
ret

23
lib/libm/arch/i387/s_scalbnf.S
View File

@ -5,15 +5,22 @@
#include <machine/asm.h>
#include "abi.h"
RCSID("$NetBSD: s_scalbnf.S,v 1.6 2003/07/26 19:25:03 salo Exp $")
RCSID("$NetBSD: s_scalbnf.S,v 1.7 2006/03/21 11:35:21 drochner Exp $")
ENTRY(scalbnf)
XMM_TWO_ARG_FLOAT_PROLOGUE
fildl ARG_FLOAT_TWO
flds ARG_FLOAT_ONE
#ifdef __x86_64__
movl %edi,-8(%rsp)
fildl -8(%rsp)
movss %xmm0,-4(%rsp)
flds -4(%rsp)
fscale
fstp %st(1) /* bug fix for fp stack overflow */
XMM_FLOAT_EPILOGUE
fstps -4(%rsp)
movss -4(%rsp),%xmm0
fstp %st(0)
#else
fildl 8(%esp)
flds 4(%esp)
fscale
fstp %st(1) /* clean up stack */
#endif
ret