diff options
| -rw-r--r-- | ChangeLog | 29 | ||||
| -rw-r--r-- | elf/Makefile | 2 | ||||
| -rw-r--r-- | elf/dl-minimal.c | 153 | ||||
| -rw-r--r-- | elf/rtld.c | 50 | ||||
| -rw-r--r-- | stdio-common/vfprintf.c | 5 | ||||
| -rw-r--r-- | stdio-common/vfscanf.c | 5 | ||||
| -rw-r--r-- | sysdeps/mach/hurd/dl-sysdep.c | 56 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/brk.S | 8 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/fpu_control.c | 2 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/fpu_control.h | 10 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/ieee_fpu.c | 2 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/init-first.c | 2 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/sysdep.S | 1 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/sockaddrcom.h | 37 |
14 files changed, 198 insertions, 164 deletions
@@ -1,3 +1,32 @@ +Wed Nov 22 12:37:39 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu> + + * sysdeps/unix/sysv/linux/i386/sysdep.S (_errno): Define as alias + for errno. + + * stdio-common/vfprintf.c [USE_IN_LIBIO] (vfprintf): Define as + alias for _IO_vfprintf. + + * sysdeps/unix/sysv/linux/sockaddrcom.h: File removed. + + * sysdeps/unix/sysv/linux/i386/init-first.c (init): Use + __fpu_control instead of ___fpu_control. + * sysdeps/unix/sysv/linux/i386/ieee_fpu.c + (___fpu_control): Renamed to __fpu_control. + * sysdeps/unix/sysv/linux/i386/fpu_control.h: Likewise. + * sysdeps/unix/sysv/linux/i386/fpu_control.c: Likewise. + + * elf/dl-minimal.c: New file. + * elf/Makefile (rtld-routines): Add dl-minimal. + * elf/rtld.c (__dgettext, __assert_fail, __assert_perror_fail): + Functions moved to dl-minimal.c. + * sysdeps/mach/hurd/dl-sysdep.c (malloc, free, realloc, + sigjmp_save, longjmp): Likewise. + + * sysdeps/unix/sysv/linux/i386/brk.S (__curbrk): Always initialize + to &_end, regardless of PIC. + + * stdio-common/vfscanf.c (__vfscanf): Fix arg name in defn. + Tue Nov 21 14:12:13 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu> * malloc/malloc.c (align): Don't check contiguity and call abort. diff --git a/elf/Makefile b/elf/Makefile index 4a1adb8b59..16a6cca2fe 100644 --- a/elf/Makefile +++ b/elf/Makefile @@ -28,7 +28,7 @@ libelf-routines := elf_hash libdl-routines := dlopen dlclose dlsym dlerror libdl-inhibit-o = $(filter-out .so,$(object-suffixes)) # Build only shared. -rtld-routines := rtld $(addprefix dl-,load lookup object reloc \ +rtld-routines := rtld $(addprefix dl-,minimal load lookup object reloc \ runtime sysdep error init fini) distribute = $(rtld-routines:=.c) dynamic-link.h do-rel.h \ soinit.c sofini.c ldd.sh.in linux-compat.c diff --git a/elf/dl-minimal.c b/elf/dl-minimal.c new file mode 100644 index 0000000000..332f21e0b0 --- /dev/null +++ b/elf/dl-minimal.c @@ -0,0 +1,153 @@ +/* Minimal replacements for basic facilities used in the dynamic linker. +Copyright (C) 1995 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 +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., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include <sys/types.h> +#include <sys/mman.h> +#include <unistd.h> +#include <assert.h> +#include <string.h> +#include <link.h> +#include "../stdio-common/_itoa.h" + +/* Minimal `malloc' allocator for use while loading shared libraries. + Only small blocks are allocated, and none are ever freed. */ + +static void *alloc_ptr, *alloc_end, *alloc_last_block; + +void * +malloc (size_t n) +{ + extern int _dl_zerofd; + static size_t pagesize; + + if (pagesize == 0) + pagesize = __getpagesize (); + + if (_dl_zerofd == -1) + _dl_zerofd = _dl_sysdep_open_zero_fill (); + + if (alloc_end == 0) + { + /* Consume any unused space in the last page of our data segment. */ + extern int _end; + alloc_ptr = &_end; + alloc_end = (void *) 0 + (((alloc_ptr - (void *) 0) + pagesize - 1) + & ~(pagesize - 1)); + } + + /* Make sure the allocation pointer is ideally aligned. */ + alloc_ptr = (void *) 0 + (((alloc_ptr - (void *) 0) + sizeof (double) - 1) + & ~(sizeof (double) - 1)); + + if (alloc_ptr + n >= alloc_end) + { + /* Insufficient space left; allocate another page. */ + caddr_t page; + assert (n <= pagesize); + page = mmap (0, pagesize, PROT_READ|PROT_WRITE, MAP_ANON, _dl_zerofd, 0); + assert (page != (caddr_t) -1); + if (page != alloc_end) + alloc_ptr = page; + alloc_end = page + pagesize; + } + + alloc_last_block = (void *) alloc_ptr; + alloc_ptr += n; + return alloc_last_block; +} +weak_symbol (malloc) + +/* This will rarely be called. */ +void +free (void *ptr) +{ + /* We can free only the last block allocated. */ + if (ptr == alloc_last_block) + alloc_ptr = alloc_last_block; +} +weak_symbol (free) + +/* This is never called. */ +void * +realloc (void *ptr, size_t n) +{ ptr += n; abort (); } +weak_symbol (realloc) + +/* Avoid signal frobnication in setjmp/longjmp. Keeps things smaller. */ + +#include <setjmp.h> + +int __sigjmp_save (sigjmp_buf env, int savemask) +{ env[0].__mask_was_saved = savemask; return 0; } +weak_symbol (__sigjmp_save) + +void +longjmp (jmp_buf env, int val) { __longjmp (env[0].__jmpbuf, val); } +weak_symbol (longjmp) + + +/* Define our own stub for the localization function used by strerror. + English-only in the dynamic linker keeps it smaller. */ + +char * +__dgettext (const char *domainname, const char *msgid) +{ + assert (domainname == _libc_intl_domainname); + return (char *) msgid; +} +weak_symbol (__dgettext) +weak_alias (__dgettext, dgettext) + +#ifndef NDEBUG + +/* Define (weakly) our own assert failure function which doesn't use stdio. + If we are linked into the user program (-ldl), the normal __assert_fail + defn can override this one. */ + +void +__assert_fail (const char *assertion, + const char *file, unsigned int line, const char *function) +{ + char buf[64]; + buf[sizeof buf - 1] = '\0'; + _dl_sysdep_fatal ("BUG IN DYNAMIC LINKER ld.so: ", + file, ": ", _itoa (line, buf + sizeof buf - 1, 10, 0), + ": ", function ?: "", function ? ": " : "", + "Assertion `", assertion, "' failed!\n", + NULL); + +} +weak_symbol (__assert_fail) + +void +__assert_perror_fail (int errnum, + const char *file, unsigned int line, + const char *function) +{ + char buf[64]; + buf[sizeof buf - 1] = '\0'; + _dl_sysdep_fatal ("BUG IN DYNAMIC LINKER ld.so: ", + file, ": ", _itoa (line, buf + sizeof buf - 1, 10, 0), + ": ", function ?: "", function ? ": " : "", + "Unexpected error: ", strerror (errnum), "\n", NULL); + +} +weak_symbol (__assert_perror_fail) + +#endif diff --git a/elf/rtld.c b/elf/rtld.c index cf9517d527..62d6488767 100644 --- a/elf/rtld.c +++ b/elf/rtld.c @@ -381,53 +381,3 @@ void _dl_r_debug_state (void) { } - -/* Define our own stub for the localization function used by strerror. - English-only in the dynamic linker keeps it smaller. */ - -char * -__dgettext (const char *domainname, const char *msgid) -{ - assert (domainname == _libc_intl_domainname); - return (char *) msgid; -} -weak_symbol (__dgettext) -weak_alias (__dgettext, dgettext) - -#ifndef NDEBUG - -/* Define (weakly) our own assert failure function which doesn't use stdio. - If we are linked into the user program (-ldl), the normal __assert_fail - defn can override this one. */ - -void -__assert_fail (const char *assertion, - const char *file, unsigned int line, const char *function) -{ - char buf[64]; - buf[sizeof buf - 1] = '\0'; - _dl_sysdep_fatal ("BUG IN DYNAMIC LINKER ld.so: ", - file, ": ", _itoa (line, buf + sizeof buf - 1, 10, 0), - ": ", function ?: "", function ? ": " : "", - "Assertion `", assertion, "' failed!\n", - NULL); - -} -weak_symbol (__assert_fail) - -void -__assert_perror_fail (int errnum, - const char *file, unsigned int line, - const char *function) -{ - char buf[64]; - buf[sizeof buf - 1] = '\0'; - _dl_sysdep_fatal ("BUG IN DYNAMIC LINKER ld.so: ", - file, ": ", _itoa (line, buf + sizeof buf - 1, 10, 0), - ": ", function ?: "", function ? ": " : "", - "Unexpected error: ", strerror (errnum), "\n", NULL); - -} -weak_symbol (__assert_perror_fail) - -#endif diff --git a/stdio-common/vfprintf.c b/stdio-common/vfprintf.c index 9e855ded56..c73661973a 100644 --- a/stdio-common/vfprintf.c +++ b/stdio-common/vfprintf.c @@ -617,6 +617,11 @@ vfprintf (s, format, ap) return done; } +#ifdef USE_IN_LIBIO +#undef vfprintf +strong_alias (_IO_vfprintf, vfprintf) +#endif + /* Handle an unknown format specifier. This prints out a canonicalized representation of the format spec itself. */ diff --git a/stdio-common/vfscanf.c b/stdio-common/vfscanf.c index a3c058495e..a0bb63281c 100644 --- a/stdio-common/vfscanf.c +++ b/stdio-common/vfscanf.c @@ -98,10 +98,7 @@ _IO_vfscanf (s, format, argptr, errp) int *errp; #else int -__vfscanf (s, format, arg) - FILE *s; - const char *format; - va_list argptr; +__vfscanf (FILE *s, const char *format, va_list argptr) #endif { va_list arg = (va_list) argptr; diff --git a/sysdeps/mach/hurd/dl-sysdep.c b/sysdeps/mach/hurd/dl-sysdep.c index f8997fe025..a2ffcd2e8c 100644 --- a/sysdeps/mach/hurd/dl-sysdep.c +++ b/sysdeps/mach/hurd/dl-sysdep.c @@ -535,62 +535,6 @@ weak_symbol (open) weak_symbol (close) weak_symbol (mmap) -/* Minimal `malloc' allocator for use while loading shared libraries. - Only small blocks are allocated, and none are ever freed. */ - -void * -malloc (size_t n) -{ - static vm_address_t ptr, end; - void *block; - - if (end == 0) - { - /* Consume any unused space in the last page of our data segment. */ - extern char _end; - ptr = (vm_address_t) &_end; - end = round_page (ptr); - } - - /* Make sure the allocation pointer is ideally aligned. */ - ptr += sizeof (double) - 1; - ptr &= ~(sizeof (double) - 1); - - if (ptr + n >= end) - { - /* Insufficient space left; allocate another page. */ - vm_address_t page; - assert (n <= __vm_page_size); - __vm_allocate (__mach_task_self (), &page, __vm_page_size, 1); - if (page != end) - ptr = page; - end = page + __vm_page_size; - } - - block = (void *) ptr; - ptr += n; - return block; -} -weak_symbol (malloc) - -/* This should never be called. */ -void *realloc (void *ptr, size_t n) { ptr += n; abort (); } -weak_symbol (realloc) - -/* This will rarely be called. */ -void free (void *ptr) { ptr = ptr; } -weak_symbol (free) - -/* Avoid signal frobnication in setjmp/longjmp. */ - -int __sigjmp_save (sigjmp_buf env, int savemask) -{ env[0].__mask_was_saved = savemask; return 0; } -weak_symbol (__sigjmp_save) - -void -longjmp (jmp_buf env, int val) { __longjmp (env[0].__jmpbuf, val); } -weak_symbol (longjmp) - /* This function is called by interruptible RPC stubs. For initial dynamic linking, just use the normal mach_msg. Since this defn is diff --git a/sysdeps/unix/sysv/linux/i386/brk.S b/sysdeps/unix/sysv/linux/i386/brk.S index 754ec5ef09..e54e311f23 100644 --- a/sysdeps/unix/sysv/linux/i386/brk.S +++ b/sysdeps/unix/sysv/linux/i386/brk.S @@ -21,15 +21,7 @@ Cambridge, MA 02139, USA. */ .data .globl C_SYMBOL_NAME(__curbrk) C_LABEL(__curbrk) -#ifdef PIC - .long 0 -#else -# ifdef HAVE_GNU_LD .long C_SYMBOL_NAME(_end) -# else - .long C_SYMBOL_NAME(end) -# endif -#endif .text diff --git a/sysdeps/unix/sysv/linux/i386/fpu_control.c b/sysdeps/unix/sysv/linux/i386/fpu_control.c index 79933b90eb..b6840d0b17 100644 --- a/sysdeps/unix/sysv/linux/i386/fpu_control.c +++ b/sysdeps/unix/sysv/linux/i386/fpu_control.c @@ -17,4 +17,4 @@ 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. */ -unsigned short ___fpu_control = 0; +unsigned short __fpu_control = 0; diff --git a/sysdeps/unix/sysv/linux/i386/fpu_control.h b/sysdeps/unix/sysv/linux/i386/fpu_control.h index 470e960853..8cf4292643 100644 --- a/sysdeps/unix/sysv/linux/i386/fpu_control.h +++ b/sysdeps/unix/sysv/linux/i386/fpu_control.h @@ -21,7 +21,7 @@ Boston, MA 02111-1307, USA. */ #define _FPU_CONTROL_H /* Here is the dirty part. Settup up your 387 through the control word - * (cw) register. + * (cw) register. * * 15-13 12 11-10 9-8 7-6 5 4 3 2 1 0 * | reserved | IC | RC | PC | reserved | PM | UM | OM | ZM | DM | IM @@ -32,7 +32,7 @@ Boston, MA 02111-1307, USA. */ * OM: Overflow mask * UM: Underflow mask * PM: Precision (inexact result) mask - * + * * Mask bit is 1 means no interrupt. * * PC: Precision control @@ -55,7 +55,7 @@ Boston, MA 02111-1307, USA. */ #include <features.h> /* masking of interrupts */ -#define _FPU_MASK_IM 0x01 +#define _FPU_MASK_IM 0x01 #define _FPU_MASK_DM 0x02 #define _FPU_MASK_ZM 0x04 #define _FPU_MASK_OM 0x08 @@ -82,13 +82,13 @@ Boston, MA 02111-1307, USA. */ - extended precision - rounding to nearest - exceptions on overflow, zero divide and NaN */ -#define _FPU_DEFAULT 0x1372 +#define _FPU_DEFAULT 0x1372 /* IEEE: same as above, but exceptions */ #define _FPU_IEEE 0x137f /* private namespace. It should only be used in init-first.o. */ -extern unsigned short ___fpu_control; +extern unsigned short __fpu_control; __BEGIN_DECLS diff --git a/sysdeps/unix/sysv/linux/i386/ieee_fpu.c b/sysdeps/unix/sysv/linux/i386/ieee_fpu.c index 4a0bf31e7c..41511547b2 100644 --- a/sysdeps/unix/sysv/linux/i386/ieee_fpu.c +++ b/sysdeps/unix/sysv/linux/i386/ieee_fpu.c @@ -19,4 +19,4 @@ Boston, MA 02111-1307, USA. */ #include <fpu_control.h> -unsigned short ___fpu_control = _FPU_IEEE; +unsigned short __fpu_control = _FPU_IEEE; diff --git a/sysdeps/unix/sysv/linux/i386/init-first.c b/sysdeps/unix/sysv/linux/i386/init-first.c index 84b5ff9f2c..9ee3f77ef5 100644 --- a/sysdeps/unix/sysv/linux/i386/init-first.c +++ b/sysdeps/unix/sysv/linux/i386/init-first.c @@ -44,7 +44,7 @@ init (int *data) : : "a" (SYS_ify (personality))); /* Set the FPU control word to the proper default value. */ - __setfpucw (___fpu_control); + __setfpucw (__fpu_control); __environ = envp; __libc_init (argc, argv, envp); diff --git a/sysdeps/unix/sysv/linux/i386/sysdep.S b/sysdeps/unix/sysv/linux/i386/sysdep.S index 0f05c84808..42f4854797 100644 --- a/sysdeps/unix/sysv/linux/i386/sysdep.S +++ b/sysdeps/unix/sysv/linux/i386/sysdep.S @@ -24,6 +24,7 @@ Cambridge, MA 02139, USA. */ ...and this place is here. */ .comm errno,4,4 +_errno = errno /* This name is expected by hj libc.so.5 startup code. */ /* The following code is not used at all in the shared library. The PIC system call stubs set errno themselves. */ diff --git a/sysdeps/unix/sysv/linux/sockaddrcom.h b/sysdeps/unix/sysv/linux/sockaddrcom.h deleted file mode 100644 index 768d05be35..0000000000 --- a/sysdeps/unix/sysv/linux/sockaddrcom.h +++ /dev/null @@ -1,37 +0,0 @@ -/* Definition of `struct sockaddr_*' common members. Generic/4.2 BSD version. -Copyright (C) 1995 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 -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., 675 Mass Ave, -Cambridge, MA 02139, USA. */ - -#ifndef _SOCKADDRCOM_H -#define _SOCKADDRCOM_H 1 - -/* This prevents including the file <linux/socket.h>. */ -#define _LINUX_SOCKET_H -#define _LINUX_TYPES_H - -/* This macro is used to declare the initial common members - of the data types used for socket addresses, `struct sockaddr', - `struct sockaddr_in', `struct sockaddr_un', etc. */ - -#define __SOCKADDR_COMMON(sa_prefix) \ - unsigned short int sa_prefix##family - -#define __SOCKADDR_COMMON_SIZE (sizeof (unsigned short int)) - - -#endif /* sockaddrcom.h */ |