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Update. 

1998-08-25 11:43  Ulrich Drepper  <drepper@cygnus.com>

	* elf/elf.h: Add syminfo stuff and other DT_* from Solaris' ELF.

1998-08-25  Bernd Schmidt  <crux@Pool.Informatik.RWTH-Aachen.DE>

	* argp/argp.h: Use __inline__ not inline.

	* sysdeps/i386/bits/select.h (FD_ZERO): Rewrite asm not to indicate
	an input register as being clobbered.
	* sysdeps/i386/memset.c (memset): Likewise.
	* sysdeps/i386/bzero.c (__bzero): Likewise.
	* sysdeps/i386/memcopy.h ({BYTE,WORD}_COPY_[FB]WD): Likewise.

1998-08-25  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* stdlib/jrand48_r.c (__jrand48_r): Set also upper half of result.
	Fixes PR libc/757 (Reported by Michael Creutz <creutz@bnl.gov).
This commit is contained in:
Ulrich Drepper 1998-08-25 11:45:26 +00:00
parent ed1ac6a2d6
commit 6dbb7062ff
8 changed files with 130 additions and 48 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
ChangeLog
View File

@ -1,3 +1,22 @@
1998-08-25 11:43 Ulrich Drepper <drepper@cygnus.com>
* elf/elf.h: Add syminfo stuff and other DT_* from Solaris' ELF.
1998-08-25 Bernd Schmidt <crux@Pool.Informatik.RWTH-Aachen.DE>
* argp/argp.h: Use __inline__ not inline.
* sysdeps/i386/bits/select.h (FD_ZERO): Rewrite asm not to indicate
an input register as being clobbered.
* sysdeps/i386/memset.c (memset): Likewise.
* sysdeps/i386/bzero.c (__bzero): Likewise.
* sysdeps/i386/memcopy.h ({BYTE,WORD}_COPY_[FB]WD): Likewise.
1998-08-25 Andreas Jaeger <aj@arthur.rhein-neckar.de>
* stdlib/jrand48_r.c (__jrand48_r): Set also upper half of result.
Fixes PR libc/757 (Reported by Michael Creutz <creutz@bnl.gov).
1998-08-24 16:34 Ulrich Drepper <drepper@cygnus.com>
* debug/catchsegv.sh: Handle text preceding backtrace better.

2
argp/argp.h
View File

@ -531,7 +531,7 @@ extern void *__argp_input __P ((__const struct argp *argp,
# endif
# ifndef ARGP_EI
# define ARGP_EI extern inline
# define ARGP_EI extern __inline__
# endif
ARGP_EI void

51
elf/elf.h
View File

@ -309,6 +309,38 @@ typedef struct
Elf64_Xword st_size; /* Symbol size */
} Elf64_Sym;
/* The syminfo section if available contains additional information about
every dynamic symbol. */
typedef struct
{
Elf32_Half si_boundto; /* Direct bindings, symbol bound to */
Elf32_Half si_flags; /* Per symbol flags */
} Elf32_Syminfo;
typedef struct
{
Elf64_Half si_boundto; /* Direct bindings, symbol bound to */
Elf64_Half si_flags; /* Per symbol flags */
} Elf64_Syminfo;
/* Possible values for si_boundto. */
#define SYMINFO_BT_SELF 0xffff /* Symbol bound to self */
#define SYMINFO_BT_PARENT 0xfffe /* Symbol bound to parent */
#define SYMINFO_BT_LOWRESERVE 0xff00 /* Beginning of reserved entries */
/* Possible bitmasks for si_flags. */
#define SYMINFO_FLG_DIRECT 0x0001 /* Direct bound symbol */
#define SYMINFO_FLG_PASSTHRU 0x0002 /* Pass-thru symbol for translator */
#define SYMINFO_FLG_COPY 0x0004 /* Symbol is a copy-reloc */
#define SYMINFO_FLG_LAZYLOAD 0x0008 /* Symbol bound to object to be lazy
loaded */
/* Syminfo version values. */
#define SYMINFO_NONE 0
#define SYMINFO_CURRENT 1
#define SYMINFO_NUM 2
/* Special section index. */
#define SHN_UNDEF 0 /* No section, undefined symbol. */
@ -530,6 +562,25 @@ typedef struct
#define DT_HIPROC 0x7fffffff /* End of processor-specific */
#define DT_PROCNUM DT_MIPS_NUM /* Most used by any processor */
/* DT_* entries which fall between DT_VALRNGHI & DT_VALRNGLO use the
Dyn.d_un.d_val field of the Elf*_Dyn structure. This follows Sun's
approach. */
#define DT_VALRNGLO 0x6ffffd00
#define DT_POSFLAG_1 0x6ffffdfd /* Flags for DT_* entries, effecting
the following DT_* entry. */
#define DT_SYMINSZ 0x6ffffdfe /* Size of syminfo table (in bytes) */
#define DT_SYMINENT 0x6ffffdff /* Entry size of syminfo */
#define DT_VALRNGHI 0x6ffffdff
/* DT_* entries which fall between DT_ADDRRNGHI & DT_ADDRRNGLO use the
Dyn.d_un.d_ptr field of the Elf*_Dyn structure.
If any adjustment is made to the ELF object after it has been
built these entries will need to be adjusted. */
#define DT_ADDRRNGLO 0x6ffffe00
#define DT_SYMINFO 0x6ffffeff /* syminfo table */
#define DT_ADDRRNGHI 0x6ffffeff
/* The versioning entry types. The next are defined as part of the
GNU extension. */
#define DT_VERSYM 0x6ffffff0

4
stdlib/jrand48_r.c
View File

@ -1,4 +1,4 @@
/* Copyright (C) 1995, 1997 Free Software Foundation, Inc.
/* Copyright (C) 1995, 1997, 1998 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.
@ -31,7 +31,7 @@ __jrand48_r (xsubi, buffer, result)
/* Store the result. */
if (sizeof (unsigned short int) == 2)
*result = (xsubi[2] & 0x7fff) | xsubi[1];
*result = ((xsubi[2] & 0x7fff) << 16) | xsubi[1];
else
*result = xsubi[2] & 0x7fffffffl;

19
sysdeps/i386/bits/select.h
View File

@ -1,4 +1,4 @@
/* Copyright (C) 1997 Free Software Foundation, Inc.
/* Copyright (C) 1997, 1998 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -24,12 +24,17 @@
#if defined __GNUC__ && __GNUC__ >= 2
# define __FD_ZERO(fdsetp) \
__asm__ __volatile__ ("cld; rep; stosl" \
: "=m" ((fdsetp)->fds_bits[__FDELT (__FD_SETSIZE)]) \
: "a" (0), "c" (sizeof (__fd_set) \
/ sizeof (__fd_mask)), \
"D" (&(fdsetp)->fds_bits[0]) \
:"cx","di","memory")
do { \
int __d0, __d1; \
__asm__ __volatile__ ("cld; rep; stosl" \
: "=m" ((fdsetp)->fds_bits[__FDELT (__FD_SETSIZE)]),\
"=&c" (__d0), "=&D" (__d1) \
: "a" (0), "1" (sizeof (__fd_set) \
/ sizeof (__fd_mask)), \
"2" (&(fdsetp)->fds_bits[0]) \
: "memory"); \
} while (0)
# define __FD_SET(fd, fdsetp) \
__asm__ __volatile__ ("btsl %1,%0" \
: "=m" ((fdsetp)->fds_bits[__FDELT (fd)]) \

20
sysdeps/i386/bzero.c
View File

@ -1,6 +1,6 @@
/* bzero -- set a block of memory to zero. For Intel 80x86, x>=3.
This file is part of the GNU C Library.
Copyright (C) 1991, 1992, 1993, 1997 Free Software Foundation, Inc.
Copyright (C) 1991, 1992, 1993, 1997, 1998 Free Software Foundation, Inc.
Contributed by Torbjorn Granlund (tege@sics.se).
The GNU C Library is free software; you can redistribute it and/or
@ -31,7 +31,7 @@ __bzero (dstpp, len)
size_t len;
{
/* N.B.: This code is almost verbatim from memset.c. */
int d0;
unsigned long int dstp = (unsigned long int) dstpp;
/* This explicit register allocation
@ -55,25 +55,25 @@ __bzero (dstpp, len)
/* Fill bytes until DSTP is aligned on a longword boundary. */
asm volatile ("rep\n"
"stosb" /* %0, %2, %3 */ :
"=D" (dstp) :
"0" (dstp), "c" ((-dstp) % OPSIZ), "a" (x) :
"cx");
"=D" (dstp), "=c" (d0) :
"0" (dstp), "1" ((-dstp) % OPSIZ), "a" (x) :
"memory");
/* Fill longwords. */
asm volatile ("rep\n"
"stosl" /* %0, %2, %3 */ :
"=D" (dstp) :
"0" (dstp), "c" (len / OPSIZ), "a" (x) :
"cx");
"=D" (dstp), "=c" (d0) :
"0" (dstp), "1" (len / OPSIZ), "a" (x) :
"memory");
len %= OPSIZ;
}
/* Write the last few bytes. */
asm volatile ("rep\n"
"stosb" /* %0, %2, %3 */ :
"=D" (dstp) :
"=D" (dstp), "=c" (d0) :
"0" (dstp), "c" (len), "a" (x) :
"cx");
"memory");
}
weak_alias (__bzero, bzero)

42
sysdeps/i386/memcopy.h
View File

@ -1,5 +1,5 @@
/* memcopy.h -- definitions for memory copy functions. i386 version.
Copyright (C) 1991, 1997 Free Software Foundation, Inc.
Copyright (C) 1991, 1997, 1998 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Torbjorn Granlund (tege@sics.se).
@ -25,19 +25,23 @@
#undef BYTE_COPY_FWD
#define BYTE_COPY_FWD(dst_bp, src_bp, nbytes) \
asm volatile(/* Clear the direction flag, so copying goes forward. */ \
"cld\n" \
/* Copy bytes. */ \
"rep\n" \
"movsb" : \
"=D" (dst_bp), "=S" (src_bp) : \
"0" (dst_bp), "1" (src_bp), "c" (nbytes) : \
"cx")
do { \
int __d0; \
asm volatile(/* Clear the direction flag, so copying goes forward. */ \
"cld\n" \
/* Copy bytes. */ \
"rep\n" \
"movsb" : \
"=D" (dst_bp), "=S" (src_bp), "=c" (__d0) : \
"0" (dst_bp), "1" (src_bp), "2" (nbytes) : \
"memory"); \
} while (0)
#undef BYTE_COPY_BWD
#define BYTE_COPY_BWD(dst_ep, src_ep, nbytes) \
do \
{ \
int __d0; \
asm volatile(/* Set the direction flag, so copying goes backwards. */ \
"std\n" \
/* Copy bytes. */ \
@ -45,9 +49,9 @@
"movsb\n" \
/* Clear the dir flag. Convention says it should be 0. */ \
"cld" : \
"=D" (dst_ep), "=S" (src_ep) : \
"0" (dst_ep - 1), "1" (src_ep - 1), "c" (nbytes) : \
"cx"); \
"=D" (dst_ep), "=S" (src_ep), "=c" (__d0) : \
"0" (dst_ep - 1), "1" (src_ep - 1), "2" (nbytes) : \
"memory"); \
dst_ep += 1; \
src_ep += 1; \
} while (0)
@ -56,14 +60,15 @@
#define WORD_COPY_FWD(dst_bp, src_bp, nbytes_left, nbytes) \
do \
{ \
int __d0; \
asm volatile(/* Clear the direction flag, so copying goes forward. */ \
"cld\n" \
/* Copy longwords. */ \
"rep\n" \
"movsl" : \
"=D" (dst_bp), "=S" (src_bp) : \
"0" (dst_bp), "1" (src_bp), "c" ((nbytes) / 4) : \
"cx"); \
"=D" (dst_bp), "=S" (src_bp), "=c" (__d0) : \
"0" (dst_bp), "1" (src_bp), "2" ((nbytes) / 4) : \
"memory"); \
(nbytes_left) = (nbytes) % 4; \
} while (0)
@ -71,6 +76,7 @@
#define WORD_COPY_BWD(dst_ep, src_ep, nbytes_left, nbytes) \
do \
{ \
int __d0; \
asm volatile(/* Set the direction flag, so copying goes backwards. */ \
"std\n" \
/* Copy longwords. */ \
@ -78,9 +84,9 @@
"movsl\n" \
/* Clear the dir flag. Convention says it should be 0. */ \
"cld" : \
"=D" (dst_ep), "=S" (src_ep) : \
"0" (dst_ep - 4), "1" (src_ep - 4), "c" ((nbytes) / 4) : \
"cx"); \
"=D" (dst_ep), "=S" (src_ep), "=c" (__d0) : \
"0" (dst_ep - 4), "1" (src_ep - 4), "2" ((nbytes) / 4) : \
"memory"); \
dst_ep += 4; \
src_ep += 4; \
(nbytes_left) = (nbytes) % 4; \

21
sysdeps/i386/memset.c
View File

@ -1,6 +1,6 @@
/* Set a block of memory to some byte value.
For Intel 80x86, x>=3.
Copyright (C) 1991, 1992, 1993, 1997 Free Software Foundation, Inc.
Copyright (C) 1991, 1992, 1993, 1997, 1998 Free Software Foundation, Inc.
Contributed by Torbjorn Granlund (tege@sics.se).
The GNU C Library is free software; you can redistribute it and/or
@ -28,6 +28,7 @@
void *
memset (void *dstpp, int c, size_t len)
{
int d0;
unsigned long int dstp = (unsigned long int) dstpp;
/* This explicit register allocation
@ -55,25 +56,25 @@ memset (void *dstpp, int c, size_t len)
/* Fill bytes until DSTP is aligned on a longword boundary. */
asm volatile("rep\n"
"stosb" /* %0, %2, %3 */ :
"=D" (dstp) :
"0" (dstp), "c" ((-dstp) % OPSIZ), "a" (x) :
"cx");
"=D" (dstp), "=c" (d0) :
"0" (dstp), "1" ((-dstp) % OPSIZ), "a" (x) :
"memory");
/* Fill longwords. */
asm volatile("rep\n"
"stosl" /* %0, %2, %3 */ :
"=D" (dstp) :
"0" (dstp), "c" (len / OPSIZ), "a" (x) :
"cx");
"=D" (dstp), "=c" (d0) :
"0" (dstp), "1" (len / OPSIZ), "a" (x) :
"memory");
len %= OPSIZ;
}
/* Write the last few bytes. */
asm volatile("rep\n"
"stosb" /* %0, %2, %3 */ :
"=D" (dstp) :
"0" (dstp), "c" (len), "a" (x) :
"cx");
"=D" (dstp), "=c" (d0) :
"0" (dstp), "1" (len), "a" (x) :
"memory");
return dstpp;
}