diff options
Diffstat (limited to 'sysdeps/i386/fpu/s_frexp.S')
| -rw-r--r-- | sysdeps/i386/fpu/s_frexp.S | 36 |
1 files changed, 24 insertions, 12 deletions
diff --git a/sysdeps/i386/fpu/s_frexp.S b/sysdeps/i386/fpu/s_frexp.S index 6a05f26720..0f149de346 100644 --- a/sysdeps/i386/fpu/s_frexp.S +++ b/sysdeps/i386/fpu/s_frexp.S @@ -1,5 +1,5 @@ /* ix87 specific frexp implementation for double. - Copyright (C) 1997 Free Software Foundation, Inc. + Copyright (C) 1997, 2000 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. @@ -19,6 +19,8 @@ Boston, MA 02111-1307, USA. */ #include <machine/asm.h> +#include "bp-sym.h" +#include "bp-asm.h" #ifdef __ELF__ .section .rodata @@ -37,10 +39,17 @@ two54: .byte 0, 0, 0, 0, 0, 0, 0x50, 0x43 #define MO(op) op #endif +#define PARMS LINKAGE /* no space for saved regs */ +#define VAL0 PARMS +#define VAL1 VAL0+4 +#define EXPP VAL1+4 + .text -ENTRY(__frexp) - movl 4(%esp), %ecx - movl 8(%esp), %eax +ENTRY (BP_SYM (__frexp)) + ENTER + + movl VAL0(%esp), %ecx + movl VAL1(%esp), %eax movl %eax, %edx andl $0x7fffffff, %eax orl %eax, %ecx @@ -52,7 +61,7 @@ ENTRY(__frexp) cmpl $0x00100000, %eax jae 2f - fldl 4(%esp) + fldl VAL0(%esp) #ifdef PIC call 3f 3: popl %edx @@ -60,8 +69,8 @@ ENTRY(__frexp) #endif fmull MO(two54) movl $-54, %ecx - fstpl 4(%esp) - movl 8(%esp), %eax + fstpl VAL0(%esp) + movl VAL1(%esp), %eax movl %eax, %edx andl $0x7fffffff, %eax @@ -70,13 +79,16 @@ ENTRY(__frexp) subl $1022, %eax orl $0x3fe00000, %edx addl %eax, %ecx - movl %edx, 8(%esp) + movl %edx, VAL1(%esp) /* Store %ecx in the variable pointed to by the second argument, get the factor from the stack and return. */ -1: movl 12(%esp), %eax - fldl 4(%esp) +1: movl EXPP(%esp), %eax + CHECK_BOUNDS_BOTH_WIDE (%eax, EXPP(%esp), $4) + fldl VAL0(%esp) movl %ecx, (%eax) + + LEAVE ret -END(__frexp) -weak_alias (__frexp, frexp) +END (BP_SYM (__frexp)) +weak_alias (BP_SYM (__frexp), BP_SYM (frexp)) |