diff options
| -rw-r--r-- | ChangeLog | 30 | ||||
| -rw-r--r-- | elf/rtld.c | 31 | ||||
| -rw-r--r-- | stdio-common/printf_fp.c | 2 | ||||
| -rw-r--r-- | stdlib/Makefile | 2 | ||||
| -rw-r--r-- | sysdeps/alpha/setjmp.S | 1 | ||||
| -rw-r--r-- | sysdeps/i386/i586/bzero.S | 2 | ||||
| -rw-r--r-- | sysdeps/i386/i586/memset.S | 101 |
7 files changed, 158 insertions, 11 deletions
@@ -1,3 +1,33 @@ +Wed Mar 27 14:52:11 1996 Roland McGrath <roland@charlie-brown.gnu.ai.mit.edu> + + * elf/rtld.c (dl_main): Call _dl_sysdep_start_cleanup after + _dl_relocate_object loop. Avoid relocating RTLD_MAP in that loop, and + do it individually if necessary after _dl_sysdep_start_cleanup call. + + * stdlib/Makefile (mpn-routines): Add divrem. + +Tue Mar 26 22:54:14 Ulrich Drepper <drepper@gnu.ai.mit.edu> + + * stdio-common/printf_fp.c (__printf_fp): Use mpn_divmod + instead of __mpn_divmod. + +Wed Mar 27 10:26:21 1996 David Mosberger-Tang <davidm@azstarnet.com> + + * sysdeps/alpha/setjmp.S: Must establish global pointer before + address of __sigsetjmp_aux can be loaded. + +Wed Mar 27 02:23:19 1996 Ulrich Drepper <drepper@gnu.ai.mit.edu> + + * sysdeps/i386/i586/memset.S: New file. Highly optimized + version for i586 contributed by Torbjorn Granlund. + Adapted for use as bzero. + * sysdeps/i386/i586/bzero.S: Use sysdeps/i386/i586/memset.S + code to implement bzero(). + +Tue Mar 26 20:01:17 1996 Roland McGrath <roland@charlie-brown.gnu.ai.mit.edu> + + * stdlib/Makefile (mpn-routines): Remove divmod. + Tue Mar 26 15:40:14 1996 Brendan Kehoe <brendan@zen.org> * sysdeps/unix/sysv/sysv4/solaris2/sparc/sysdep.h (NO_UNDERSCORES): Use diff --git a/elf/rtld.c b/elf/rtld.c index 23e0d35d78..d727e1361f 100644 --- a/elf/rtld.c +++ b/elf/rtld.c @@ -339,23 +339,36 @@ of this helper program; chances are you did not intend to run this program.\n", lazy = !_dl_secure && *(getenv ("LD_BIND_NOW") ?: "") == '\0'; - /* Do any necessary cleanups for the startup OS interface code. - We do these now so that no calls are made after real relocation - which might be resolved to different functions than we expect. */ - _dl_sysdep_start_cleanup (); - - /* Now we have all the objects loaded. Relocate them all. - We do this in reverse order so that copy relocs of earlier - objects overwrite the data written by later objects. */ + /* Now we have all the objects loaded. Relocate them all except for + the dynamic linker itself. We do this in reverse order so that + copy relocs of earlier objects overwrite the data written by later + objects. We do not re-relocate the dynamic linker itself in this + loop because that could result in the GOT entries for functions we + call being changed, and that would break us. It is safe to + relocate the dynamic linker out of order because it has no copy + relocs (we know that because it is self-contained). */ l = _dl_loaded; while (l->l_next) l = l->l_next; do { - _dl_relocate_object (l, lazy); + if (l != &rtld_map) + _dl_relocate_object (l, lazy); l = l->l_prev; } while (l); + /* Do any necessary cleanups for the startup OS interface code. + We do these now so that no calls are made after rtld re-relocation + which might be resolved to different functions than we expect. + We cannot do this before relocating the other objects because + _dl_relocate_object might need to call `mprotect' for DT_TEXTREL. */ + _dl_sysdep_start_cleanup (); + + if (rtld_map.l_opencount > 0) + /* There was an explicit ref to the dynamic linker as a shared lib. + Re-relocate ourselves with user-controlled symbol definitions. */ + _dl_relocate_object (&rtld_map, lazy); + /* Tell the debugger where to find the map of loaded objects. */ dl_r_debug.r_version = 1 /* R_DEBUG_VERSION XXX */; dl_r_debug.r_ldbase = rtld_map.l_addr; /* Record our load address. */ diff --git a/stdio-common/printf_fp.c b/stdio-common/printf_fp.c index 8fbb93f475..5cf60f131c 100644 --- a/stdio-common/printf_fp.c +++ b/stdio-common/printf_fp.c @@ -204,7 +204,7 @@ __printf_fp (FILE *fp, hi = 0; else { - hi = __mpn_divmod (tmp, frac, fracsize, scale, scalesize); + hi = mpn_divmod (tmp, frac, fracsize, scale, scalesize); tmp[fracsize - scalesize] = hi; hi = tmp[0]; diff --git a/stdlib/Makefile b/stdlib/Makefile index 54a95fda05..1fdfb68bb4 100644 --- a/stdlib/Makefile +++ b/stdlib/Makefile @@ -49,7 +49,7 @@ tests := tst-strtol tst-strtod testmb testrand testsort testdiv # Several mpn functions from GNU MP are used by the strtod function. -mpn-routines := add_1 add_n addmul_1 cmp divmod divmod_1 udiv_qrnnd \ +mpn-routines := add_1 add_n addmul_1 cmp divrem divmod_1 udiv_qrnnd \ lshift rshift mod_1 mul mul_1 mul_n sub_n submul_1 mpn-headers = longlong.h gmp.h gmp-impl.h gmp-mparam.h asm-syntax.h diff --git a/sysdeps/alpha/setjmp.S b/sysdeps/alpha/setjmp.S index 8ea2b50f87..04b8068eb9 100644 --- a/sysdeps/alpha/setjmp.S +++ b/sysdeps/alpha/setjmp.S @@ -22,6 +22,7 @@ Cambridge, MA 02139, USA. */ reliably access the stack or frame pointers, so we pass them in as extra arguments. */ ENTRY (__sigsetjmp) + ldgp $29, 0($27) lda $27, __sigsetjmp_aux/* Load address to jump to. */ bis $30, $30, $18 /* Pass SP as 3rd arg. */ bis $15, $15, $19 /* Pass FP as 4th arg. */ diff --git a/sysdeps/i386/i586/bzero.S b/sysdeps/i386/i586/bzero.S new file mode 100644 index 0000000000..2c75103492 --- /dev/null +++ b/sysdeps/i386/i586/bzero.S @@ -0,0 +1,2 @@ +#define memset bzero +#include <sysdeps/i386/i586/memset.S> diff --git a/sysdeps/i386/i586/memset.S b/sysdeps/i386/i586/memset.S new file mode 100644 index 0000000000..3a68fa16d1 --- /dev/null +++ b/sysdeps/i386/i586/memset.S @@ -0,0 +1,101 @@ +/* memset/bzero -- set memory area to CH/0 +Highly optimized version for ix85, x>=5. +Copyright (C) 1996 Free Software Foundation, Inc. +This file is part of the GNU C Library. +Contributed by Torbjorn Granlund, <tege@matematik.su.se> + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, +Boston, MA 02111-1307, USA. */ + +#include <sysdep.h> + +/* + INPUT PARAMETERS: + (memset) (bzero) + dst (sp + 4) dst (sp + 4) + ch (sp + 8) len (sp + 8) + len (sp + 12) +*/ + + + .text +ENTRY (memset) + pushl %edi + + movl 8(%esp), %edi /* destination pointer */ +#ifdef memset + xorl %eax, %eax /* we fill with 0 */ + movl 12(%esp), %edx /* size (in 8-bit words) */ +#else + movb 12(%esp), %al /* use CH to fill */ + movl 16(%esp), %edx /* size (in 8-bit words) */ + + movb %al, %ah + movl %eax, %ecx + shll $16, %eax + movw %cx, %ax +#endif + cld + +/* If less than 36 bytes to write, skip tricky code (it wouldn't work). */ + cmpl $36, %edx + movl %edx, %ecx /* needed when branch is taken! */ + jl L2 + +/* First write 0-3 bytes to make the pointer 32-bit aligned. */ + movl %edi, %ecx /* Copy ptr to ecx... */ + negl %ecx /* ...and negate that and... */ + andl $3, %ecx /* ...mask to get byte count. */ + subl %ecx, %edx /* adjust global byte count */ + rep + stosb + + subl $32, %edx /* offset count for unrolled loop */ + movl (%edi), %ecx /* Fetch destination cache line */ + + .align 2, 0x90 /* supply 0x90 for broken assemblers */ +L1: movl 28(%edi), %ecx /* allocate cache line for destination */ + subl $32, %edx /* decr loop count */ + movl %eax, 0(%edi) /* store words pairwise */ + movl %eax, 4(%edi) + movl %eax, 8(%edi) + movl %eax, 12(%edi) + movl %eax, 16(%edi) + movl %eax, 20(%edi) + movl %eax, 24(%edi) + movl %eax, 28(%edi) + leal 32(%edi), %edi /* update destination pointer */ + jge L1 + + leal 32(%edx), %ecx /* reset offset count */ + +/* Write last 0-7 full 32-bit words (up to 8 words if loop was skipped). */ +L2: shrl $2, %ecx /* convert byte count to longword count */ + rep + stosl + +/* Finally write the last 0-3 bytes. */ + movl %edx, %ecx + andl $3, %ecx + rep + stosb + + /* Load result (only if used as memset). */ +#ifndef memset + movl 8(%esp), %eax +#endif + popl %edi + + ret |