* sysdeps/i386/fpu/s_frexp.S: Check bounds.

Wrap extern symbols in BP_SYM (). 
* sysdeps/i386/fpu/s_frexpf.S: Likewise. 
* sysdeps/i386/fpu/s_frexpl.S: Likewise. 
* sysdeps/i386/fpu/s_remquo.S: Likewise. 
* sysdeps/i386/fpu/s_remquof.S: Likewise. 
* sysdeps/i386/fpu/s_remquol.S: Likewise. 
* sysdeps/i386/fpu/s_sincos.S: Likewise. 
* sysdeps/i386/fpu/s_sincosf.S: Likewise. 
* sysdeps/i386/fpu/s_sincosl.S: Likewise. 
* sysdeps/unix/sysv/linux/i386/clone.S: Likewise. 
* sysdeps/unix/sysv/linux/i386/mmap64.S: Likewise.
This commit is contained in:
Greg McGary 2000-08-17 07:36:19 +00:00
parent 9a81430bf9
commit 9e25f6e29b
11 changed files with 248 additions and 103 deletions

View File

@ -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))

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@ -1,5 +1,5 @@
/* ix87 specific frexp implementation for float.
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
@ -37,9 +39,15 @@ two25: .byte 0, 0, 0, 0x4c
#define MO(op) op
#endif
#define PARMS LINKAGE /* no space for saved regs */
#define VAL PARMS
#define EXPP VAL+4
.text
ENTRY(__frexpf)
movl 4(%esp), %eax
ENTRY (BP_SYM (__frexpf))
ENTER
movl VAL(%esp), %eax
xorl %ecx, %ecx
movl %eax, %edx
andl $0x7fffffff, %eax
@ -50,7 +58,7 @@ ENTRY(__frexpf)
cmpl $0x00800000, %eax
jae 2f
flds 4(%esp)
flds VAL(%esp)
#ifdef PIC
call 3f
3: popl %edx
@ -58,8 +66,8 @@ ENTRY(__frexpf)
#endif
fmuls MO(two25)
movl $-25, %ecx
fstps 4(%esp)
movl 4(%esp), %eax
fstps VAL(%esp)
movl VAL(%esp), %eax
movl %eax, %edx
andl $0x7fffffff, %eax
@ -68,13 +76,16 @@ ENTRY(__frexpf)
subl $126, %eax
orl $0x3f000000, %edx
addl %eax, %ecx
movl %edx, 4(%esp)
movl %edx, VAL(%esp)
/* Store %ecx in the variable pointed to by the second argument,
get the factor from the stack and return. */
1: movl 8(%esp), %eax
flds 4(%esp)
1: movl EXPP(%esp), %eax
CHECK_BOUNDS_BOTH_WIDE (%eax, EXPP(%esp), $4)
flds VAL(%esp)
movl %ecx, (%eax)
LEAVE
ret
END(__frexpf)
weak_alias (__frexpf, frexpf)
END (BP_SYM (__frexpf))
weak_alias (BP_SYM (__frexpf), BP_SYM (frexpf))

View File

@ -1,5 +1,5 @@
/* ix87 specific frexp implementation for long 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
@ -37,11 +39,19 @@ two64: .byte 0, 0, 0, 0, 0, 0, 0xf0, 0x43
#define MO(op) op
#endif
#define PARMS LINKAGE /* no space for saved regs */
#define VAL0 PARMS
#define VAL1 VAL0+4
#define VAL2 VAL1+4
#define EXPP VAL2+4
.text
ENTRY(__frexpl)
movl 4(%esp), %ecx
movl 12(%esp), %eax
orl 8(%esp), %ecx
ENTRY (BP_SYM (__frexpl))
ENTER
movl VAL0(%esp), %ecx
movl VAL2(%esp), %eax
orl VAL1(%esp), %ecx
movl %eax, %edx
andl $0x7fff, %eax
orl %eax, %ecx
@ -53,7 +63,7 @@ ENTRY(__frexpl)
cmpl $0, %eax
je 2f
fldt 4(%esp)
fldt VAL0(%esp)
#ifdef PIC
call 3f
3: popl %edx
@ -61,8 +71,8 @@ ENTRY(__frexpl)
#endif
fmull MO(two64) /* It's not necessary to use a 80bit factor */
movl $-64, %ecx
fstpt 4(%esp)
movl 12(%esp), %eax
fstpt VAL0(%esp)
movl VAL2(%esp), %eax
movl %eax, %edx
andl $0x7fff, %eax
@ -70,13 +80,16 @@ ENTRY(__frexpl)
subl $16382, %eax
orl $0x3ffe, %edx
addl %eax, %ecx
movl %edx, 12(%esp)
movl %edx, VAL2(%esp)
/* Store %ecx in the variable pointed to by the second argument,
get the factor from the stack and return. */
1: movl 16(%esp), %eax
fldt 4(%esp)
1: movl EXPP(%esp), %eax
CHECK_BOUNDS_BOTH_WIDE (%eax, EXPP(%esp), $4)
fldt VAL0(%esp)
movl %ecx, (%eax)
LEAVE
ret
END(__frexpl)
weak_alias (__frexpl, frexpl)
END (BP_SYM (__frexpl))
weak_alias (BP_SYM (__frexpl), BP_SYM (frexpl))

View File

@ -5,10 +5,20 @@
*/
#include <machine/asm.h>
#include "bp-sym.h"
#include "bp-asm.h"
ENTRY(__remquo)
fldl 12(%esp)
fldl 4(%esp)
#define PARMS LINKAGE /* no space for saved regs */
#define DVDND PARMS
#define DVSOR DVDND+8
#define QUOP DVSOR+8
.text
ENTRY (BP_SYM (__remquo))
ENTER
fldl DVSOR(%esp)
fldl DVDND(%esp)
1: fprem1
fstsw %ax
sahf
@ -24,13 +34,16 @@ ENTRY(__remquo)
movl $0xef2960, %eax
shrl %cl, %eax
andl $3, %eax
movl 20(%esp), %ecx
movl 8(%esp), %edx
xorl 16(%esp), %edx
movl QUOP(%esp), %ecx
CHECK_BOUNDS_BOTH_WIDE (%ecx, QUOP(%esp), $4)
movl DVDND+4(%esp), %edx
xorl DVSOR+4(%esp), %edx
testl $0x80000000, %edx
jz 1f
negl %eax
1: movl %eax, (%ecx)
LEAVE
ret
END (__remquo)
weak_alias (__remquo, remquo)
END (BP_SYM (__remquo))
weak_alias (BP_SYM (__remquo), BP_SYM (remquo))

View File

@ -5,10 +5,20 @@
*/
#include <machine/asm.h>
#include "bp-sym.h"
#include "bp-asm.h"
ENTRY(__remquof)
flds 8(%esp)
flds 4(%esp)
#define PARMS LINKAGE /* no space for saved regs */
#define DVDND PARMS
#define DVSOR DVDND+4
#define QUOP DVSOR+4
.text
ENTRY (BP_SYM (__remquof))
ENTER
flds DVSOR(%esp)
flds DVDND(%esp)
1: fprem1
fstsw %ax
sahf
@ -24,13 +34,16 @@ ENTRY(__remquof)
movl $0xef2960, %eax
shrl %cl, %eax
andl $3, %eax
movl 12(%esp), %ecx
movl 4(%esp), %edx
xorl 8(%esp), %edx
movl QUOP(%esp), %ecx
CHECK_BOUNDS_BOTH_WIDE (%ecx, QUOP(%esp), $4)
movl DVDND(%esp), %edx
xorl DVSOR(%esp), %edx
testl $0x80000000, %edx
jz 1f
negl %eax
1: movl %eax, (%ecx)
LEAVE
ret
END (__remquof)
weak_alias (__remquof, remquof)
END (BP_SYM (__remquof))
weak_alias (BP_SYM (__remquof), BP_SYM (remquof))

View File

@ -5,10 +5,20 @@
*/
#include <machine/asm.h>
#include "bp-sym.h"
#include "bp-asm.h"
ENTRY(__remquol)
fldt 16(%esp)
fldt 4(%esp)
#define PARMS LINKAGE /* no space for saved regs */
#define DVDND PARMS
#define DVSOR DVDND+12
#define QUOP DVSOR+12
.text
ENTRY (BP_SYM (__remquol))
ENTER
fldt DVSOR(%esp)
fldt DVDND(%esp)
1: fprem1
fstsw %ax
sahf
@ -24,13 +34,16 @@ ENTRY(__remquol)
movl $0xef2960, %eax
shrl %cl, %eax
andl $3, %eax
movl 28(%esp), %ecx
movl 12(%esp), %edx
xorl 24(%esp), %edx
movl QUOP(%esp), %ecx
CHECK_BOUNDS_BOTH_WIDE (%ecx, QUOP(%esp), $4)
movl DVDND+8(%esp), %edx
xorl DVSOR+8(%esp), %edx
testl $0x8000, %edx
jz 1f
negl %eax
1: movl %eax, (%ecx)
LEAVE
ret
END (__remquol)
weak_alias (__remquol, remquol)
END (BP_SYM (__remquol))
weak_alias (BP_SYM (__remquol), BP_SYM (remquol))

View File

@ -1,5 +1,5 @@
/* Compute sine and cosine of argument.
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.
@ -19,18 +19,33 @@
Boston, MA 02111-1307, USA. */
#include <machine/asm.h>
#include "bp-sym.h"
#include "bp-asm.h"
ENTRY(__sincos)
fldl 4(%esp)
#define PARMS LINKAGE /* no space for saved regs */
#define ANGLE PARMS
#define SINP ANGLE+8
#define COSP SINP+PTR_SIZE
.text
ENTRY (BP_SYM (__sincos))
ENTER
fldl ANGLE(%esp)
fsincos
movl 12(%esp), %ecx
movl 16(%esp), %edx
movl SINP(%esp), %ecx
CHECK_BOUNDS_BOTH_WIDE (%ecx, SINP(%esp), $8)
movl COSP(%esp), %edx
CHECK_BOUNDS_BOTH_WIDE (%edx, COSP(%esp), $8)
fnstsw %ax
testl $0x400,%eax
jnz 1f
fstpl (%edx)
fstpl (%ecx)
LEAVE
ret
.align ALIGNARG(4)
1: fldpi
fadd %st(0)
@ -43,6 +58,8 @@ ENTRY(__sincos)
fsincos
fstpl (%edx)
fstpl (%ecx)
LEAVE
ret
END(__sincos)
weak_alias(__sincos, sincos)
END (BP_SYM (__sincos))
weak_alias (BP_SYM (__sincos), BP_SYM (sincos))

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@ -1,5 +1,5 @@
/* Compute sine and cosine of argument.
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.
@ -19,18 +19,33 @@
Boston, MA 02111-1307, USA. */
#include <machine/asm.h>
#include "bp-sym.h"
#include "bp-asm.h"
ENTRY(__sincosf)
flds 4(%esp)
#define PARMS LINKAGE /* no space for saved regs */
#define ANGLE PARMS
#define SINP ANGLE+4
#define COSP SINP+PTR_SIZE
.text
ENTRY (BP_SYM (__sincosf))
ENTER
flds ANGLE(%esp)
fsincos
movl 8(%esp), %ecx
movl 12(%esp), %edx
movl SINP(%esp), %ecx
CHECK_BOUNDS_BOTH_WIDE (%ecx, SINP(%esp), $4)
movl COSP(%esp), %edx
CHECK_BOUNDS_BOTH_WIDE (%edx, COSP(%esp), $4)
fnstsw %ax
testl $0x400,%eax
jnz 1f
fstps (%edx)
fstps (%ecx)
LEAVE
ret
.align ALIGNARG(4)
1: fldpi
fadd %st(0)
@ -43,6 +58,8 @@ ENTRY(__sincosf)
fsincos
fstps (%edx)
fstps (%ecx)
LEAVE
ret
END(__sincosf)
weak_alias(__sincosf, sincosf)
END (BP_SYM (__sincosf))
weak_alias (BP_SYM (__sincosf), BP_SYM (sincosf))

View File

@ -1,5 +1,5 @@
/* Compute sine and cosine of argument.
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.
@ -19,18 +19,33 @@
Boston, MA 02111-1307, USA. */
#include <machine/asm.h>
#include "bp-sym.h"
#include "bp-asm.h"
ENTRY(__sincosl)
fldt 4(%esp)
#define PARMS LINKAGE /* no space for saved regs */
#define ANGLE PARMS
#define SINP ANGLE+12
#define COSP SINP+PTR_SIZE
.text
ENTRY (BP_SYM (__sincosl))
ENTER
fldt ANGLE(%esp)
fsincos
movl 16(%esp), %ecx
movl 20(%esp), %edx
movl SINP(%esp), %ecx
CHECK_BOUNDS_BOTH_WIDE (%ecx, SINP(%esp), $12)
movl COSP(%esp), %edx
CHECK_BOUNDS_BOTH_WIDE (%edx, COSP(%esp), $12)
fnstsw %ax
testl $0x400,%eax
jnz 1f
fstpt (%edx)
fstpt (%ecx)
LEAVE
ret
.align ALIGNARG(4)
1: fldpi
fadd %st(0)
@ -43,6 +58,8 @@ ENTRY(__sincosl)
fsincos
fstpt (%edx)
fstpt (%ecx)
LEAVE
ret
END(__sincosl)
weak_alias(__sincosl, sincosl)
END (BP_SYM (__sincosl))
weak_alias (BP_SYM (__sincosl), BP_SYM (sincosl))

View File

@ -1,4 +1,4 @@
/* Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
/* Copyright (C) 1996, 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Richard Henderson (rth@tamu.edu)
@ -24,21 +24,29 @@
#define _ERRNO_H 1
#include <bits/errno.h>
#include <asm-syntax.h>
#include <bp-sym.h>
#include <bp-asm.h>
/* int clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg); */
#define PARMS LINKAGE /* no space for saved regs */
#define FUNC PARMS
#define STACK FUNC+4
#define FLAGS STACK+PTR_SIZE
#define ARG FLAGS+4
.text
ENTRY(__clone)
ENTRY (BP_SYM (__clone))
/* Sanity check arguments. */
movl $-EINVAL,%eax
movl 4(%esp),%ecx /* no NULL function pointers */
movl FUNC(%esp),%ecx /* no NULL function pointers */
#ifdef PIC
jecxz SYSCALL_ERROR_LABEL
#else
testl %ecx,%ecx
jz SYSCALL_ERROR_LABEL
#endif
movl 8(%esp),%ecx /* no NULL stack pointers */
movl STACK(%esp),%ecx /* no NULL stack pointers */
#ifdef PIC
jecxz SYSCALL_ERROR_LABEL
#else
@ -48,17 +56,17 @@ ENTRY(__clone)
/* Insert the argument onto the new stack. */
subl $8,%ecx
movl 16(%esp),%eax /* no negative argument counts */
movl ARG(%esp),%eax /* no negative argument counts */
movl %eax,4(%ecx)
/* Save the function pointer as the zeroth argument.
It will be popped off in the child in the ebx frobbing below. */
movl 4(%esp),%eax
movl FUNC(%esp),%eax
movl %eax,0(%ecx)
/* Do the system call */
pushl %ebx
movl 16(%esp),%ebx
movl FLAGS+4(%esp),%ebx
movl $SYS_ify(clone),%eax
int $0x80
popl %ebx
@ -82,6 +90,6 @@ L(here):
pushl %eax
call JUMPTARGET (_exit)
PSEUDO_END (__clone)
PSEUDO_END (BP_SYM (__clone))
weak_alias (__clone, clone)
weak_alias (BP_SYM (__clone), BP_SYM (clone))

View File

@ -17,15 +17,26 @@
Boston, MA 02111-1307, USA. */
#include <sysdep.h>
#include <bp-sym.h>
#include <bp-asm.h>
#include "kernel-features.h"
#define EINVAL 22
#define ENOSYS 38
.text
#define SVRSP 16 /* saved register space */
#define PARMS LINKAGE+SVRSP /* space for 4 saved regs */
#define ADDR PARMS
#define LEN ADDR+PTR_SIZE
#define PROT LEN+4
#define FLAGS PROT+4
#define FD FLAGS+4
#define OFFLO FD+4
#define OFFHI OFFLO+4
ENTRY (__mmap64)
.text
ENTRY (BP_SYM (__mmap64))
#ifdef __NR_mmap2
@ -35,8 +46,8 @@ ENTRY (__mmap64)
pushl %esi
pushl %edi
movl 40(%esp), %edx
movl 44(%esp), %ecx
movl OFFLO(%esp), %edx
movl OFFHI(%esp), %ecx
testl $0x3ff, %edx
jne L(einval)
shrdl $12, %ecx, %edx /* mmap2 takes the offset in pages. */
@ -44,11 +55,11 @@ ENTRY (__mmap64)
jne L(einval)
movl %edx, %ebp
movl 20(%esp), %ebx
movl 24(%esp), %ecx
movl 28(%esp), %edx
movl 32(%esp), %esi
movl 36(%esp), %edi
movl ADDR(%esp), %ebx
movl LEN(%esp), %ecx
movl PROT(%esp), %edx
movl FLAGS(%esp), %esi
movl FD(%esp), %edi
movl $SYS_ify(mmap2), %eax /* System call number in %eax. */
@ -91,12 +102,12 @@ L(einval):
/* Save registers. */
movl %ebx, %edx
cmpl $0, 28(%esp)
cmpl $0, OFFHI-SVRSP(%esp)
jne L(einval2)
movl $SYS_ify(mmap), %eax /* System call number in %eax. */
lea 4(%esp), %ebx /* Address of args is 1st arg. */
lea ADDR-SVRSP(%esp), %ebx /* Address of args is 1st arg. */
/* Do the system call trap. */
int $0x80
@ -120,6 +131,6 @@ L(einval2):
jmp SYSCALL_ERROR_LABEL
#endif
PSEUDO_END (__mmap64)
PSEUDO_END (BP_SYM (__mmap64))
weak_alias (__mmap64, mmap64)
weak_alias (BP_SYM (__mmap64), BP_SYM (mmap64))