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author | Ulrich Drepper <drepper@redhat.com> | 2000-10-15 06:50:42 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 2000-10-15 06:50:42 +0000 |
commit | b15cb495054a40644197395fb6a94daa4b0e81cb (patch) | |
tree | 085712cd0a7f5e68dc291c49c6adfb9c3675dcee /sysdeps/hppa/dl-fptr.c | |
parent | 42be70d43174c6a6e80fbd25276d4eb04c6e5adf (diff) | |
download | glibc-b15cb495054a40644197395fb6a94daa4b0e81cb.tar.gz glibc-b15cb495054a40644197395fb6a94daa4b0e81cb.tar.xz glibc-b15cb495054a40644197395fb6a94daa4b0e81cb.zip |
Update.
2000-10-14 Ulrich Drepper <drepper@redhat.com> * math/libm-test.inc (frexp_test): Add L suffix also to parameters. (hypot_test): Likewise. * sysdeps/generic/printf_fphex.c: Compute width of decimal point string correctly. Handle padding correctly. * sysdeps/ia64/fpu/printf_fphex.c: Use sizeof in _itowa parameters correctly. * sysdeps/ieee754/ldbl-128/printf_fphex.c: Likewise. * sysdeps/ieee754/ldbl-96/printf_fphex.c: Likewise. 2000-10-12 Alan Modra <alan@linuxcare.com.au> * FAQ.in: Add --start-group and --end-group. 2000-10-12 Alan Modra <alan@linuxcare.com.au> * malloc/memusage.c: Conditionalize stack usage calculation on stack direction. 2000-10-12 Alan Modra <alan@linuxcare.com.au> * config.h.in: Add ASM_LINE_SEP. * configure.in: Add test for comment and line separators. * include/libc-symbols.h: Define and use ASM_LINE_SEP, and add tabs to placate some hppa assemblers. * sysdeps/hppa/sysdep.h: Likewise. * sysdeps/gnu/siglist.c: Insert \n and \t into inline asm. * sysdeps/unix/sysv/linux/errlist.c: Likewise. 2000-10-12 David Huggins-Daines <dhd@linuxcare.com> * sysdeps/unix/sysv/linux/Makefile: Include <bits/initspin> in $(sysdep_headers). * sysdeps/unix/sysv/linux/bits/initspin.h: Dummy version for non-threaded platforms. 2000-10-12 David Huggins-Daines <dhd@linuxcare.com> * configure.in: Add definitions for hppa. * elf/elf.h: Add PLABEL32 relocation for hppa ELF32, comments for IPLT and EPLT relocations. * shlib-versions: Version symbol definitions for hppa-linux. * sysdeps/unix/sysv/linux/configure.in: Define $arch_minimum_kernel for hppa. 2000-10-12 David Huggins-Daines <dhd@linuxcare.com> * sysdeps/hppa/Makefile: New file. * sysdeps/hppa/Versions: New file. * sysdeps/hppa/setjmp.S: New file. * sysdeps/hppa/__longjmp.S: New file. * sysdeps/hppa/bits/setjmp.h: New file. * sysdeps/hppa/frame.h: New file. * sysdeps/hppa/add_n.s: Don't use %r19 (linkage table pointer). * sysdeps/hppa/sub_n.s: Likewise. * sysdeps/hppa/lshift.s: Likewise. * sysdeps/hppa/rshift.s: Likewise. * sysdeps/hppa/udiv_qrnnd.s: Likewise. * sysdeps/hppa/hppa1.1/addmul_1.s: Likewise. * sysdeps/hppa/hppa1.1/submul_1.s: Likewise. * sysdeps/hppa/hppa1.1/mul_1.s: Likewise. * sysdeps/hppa/hppa1.1/udiv_qrnnd.s: Likewise. * sysdeps/hppa/dl-machine.h: New file. * sysdeps/hppa/dl-fptr.c: New file (note that this is almost identical to the IA-64 one). * sysdeps/hppa/dl-lookupcfg.h: Likewise. * sysdeps/hppa/dl-symaddr.c: Likewise. * sysdeps/hppa/elf/initfini.c: New file. * sysdeps/hppa/elf/start.S: New file. * sysdeps/hppa/fpu/bits/fenv.h: New file. * sysdeps/hppa/fpu/fclrexcpt.c: New file. * sysdeps/hppa/fpu/fedisblxcpt.c: New file. * sysdeps/hppa/fpu/feenablxcpt.c: New file. * sysdeps/hppa/fpu/fegetenv.c: New file. * sysdeps/hppa/fpu/fegetexcept.c: New file. * sysdeps/hppa/fpu/fegetround.c: New file. * sysdeps/hppa/fpu/feholdexcpt.c: New file. * sysdeps/hppa/fpu/fesetenv.c: New file. * sysdeps/hppa/fpu/fesetround.c: New file. * sysdeps/hppa/fpu/feupdateenv.c: New file. * sysdeps/hppa/fpu/fegetexcptflg.c: New file. * sysdeps/hppa/fpu/fraiseexcpt.c: New file. * sysdeps/hppa/fpu/fsetexcptflg.c: New file. * sysdeps/hppa/fpu/ftestexcept.c: New file. * sysdeps/unix/sysv/linux/hppa/Makefile: New file. * sysdeps/unix/sysv/linux/hppa/Versions: New file. * sysdeps/unix/sysv/linux/hppa/syscalls.list: New file. * sysdeps/unix/sysv/linux/hppa/sysdep.c: New file. * sysdeps/unix/sysv/linux/hppa/sysdep.h: New file. * sysdeps/unix/sysv/linux/hppa/bits/fcntl.h: New file. * sysdeps/unix/sysv/linux/hppa/bits/ioctls.h: New file. * sysdeps/unix/sysv/linux/hppa/bits/mman.h: New file. * sysdeps/unix/sysv/linux/hppa/bits/sigaction.h: New file. * sysdeps/unix/sysv/linux/hppa/bits/signum.h: New file. * sysdeps/unix/sysv/linux/hppa/brk.c: New file. * sysdeps/unix/sysv/linux/hppa/clone.S: New file. * sysdeps/unix/sysv/linux/hppa/socket.S: New file. * sysdeps/unix/sysv/linux/hppa/syscall.S: New file. * sysdeps/unix/sysv/linux/hppa/setrlimit.c: New file. * sysdeps/unix/sysv/linux/hppa/getrlimit.c: New file. * sysdeps/unix/sysv/linux/hppa/getrlimit64.c: New file. * sysdeps/unix/sysv/linux/hppa/kernel_sigaction.h: New file. * sysdeps/unix/sysv/linux/hppa/kernel_stat.h: New file. * sysdeps/unix/sysv/linux/hppa/mmap.c: New file. * sysdeps/unix/sysv/linux/hppa/profil-counter.h: New file. * sysdeps/unix/sysv/linux/hppa/procfs.h: New file. * sysdeps/unix/sysv/linux/hppa/ucontext.h: New file. * sysdeps/unix/sysv/linux/hppa/umount.c: New file. 2000-10-12 Alan Modra <alan@linuxcare.com.au> * sysdeps/hppa/hppa1.1/Implies: New file. * sysdeps/hppa/memusage.h: New file.
Diffstat (limited to 'sysdeps/hppa/dl-fptr.c')
-rw-r--r-- | sysdeps/hppa/dl-fptr.c | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/sysdeps/hppa/dl-fptr.c b/sysdeps/hppa/dl-fptr.c new file mode 100644 index 0000000000..8a2c1c214d --- /dev/null +++ b/sysdeps/hppa/dl-fptr.c @@ -0,0 +1,212 @@ +/* Make dynamic PLABELs for function pointers. HPPA version. + Copyright (C) 1999, 2000 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., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <unistd.h> +#include <string.h> +#include <sys/param.h> +#include <sys/mman.h> +#include <link.h> +#include <errno.h> +#include <ldsodefs.h> +#include <elf/dynamic-link.h> +#include <dl-machine.h> +#ifdef _LIBC_REENTRANT +# include <pt-machine.h> + +/* Remember, we use 0 to mean that a lock is taken on PA-RISC. */ +static int __hppa_fptr_lock = 1; +#endif + +/* Because ld.so is now versioned, these functions can be in their own + file; no relocations need to be done to call them. Of course, if + ld.so is not versioned... */ +#if 0 +#ifndef DO_VERSIONING +# error "This will not work with versioning turned off, sorry." +#endif +#endif + +#ifdef MAP_ANON +/* The fd is not examined when using MAP_ANON. */ +#define ANONFD -1 +#else +extern int _dl_zerofd; +#define ANONFD _dl_zerofd +#endif + +struct hppa_fptr __boot_ldso_fptr[HPPA_BOOT_FPTR_SIZE]; +struct hppa_fptr *__fptr_root = NULL; +struct hppa_fptr *__fptr_next = __boot_ldso_fptr; +static struct hppa_fptr *__fptr_free = NULL; +int __fptr_count = HPPA_BOOT_FPTR_SIZE; + +Elf32_Addr +__hppa_make_fptr (const struct link_map *sym_map, Elf32_Addr value, + struct hppa_fptr **root, struct hppa_fptr *mem) +{ + struct hppa_fptr **loc; + struct hppa_fptr *f; + +#ifdef _LIBC_REENTRANT + /* Make sure we are alone. We don't need a lock during bootstrap. */ + if (mem == NULL) + while (testandset (&__hppa_fptr_lock)); +#endif + + /* Search the sorted linked list for an existing entry for this + symbol. */ + loc = root; + f = *loc; + while (f != NULL && f->func <= value) + { + if (f->func == value) + goto found; + loc = &f->next; + f = *loc; + } + + /* Not found. Create a new one. */ + if (mem != NULL) + f = mem; + else if (__fptr_free != NULL) + { + f = __fptr_free; + __fptr_free = f->next; + } + else + { + if (__fptr_count == 0) + { +#ifndef MAP_ANON +# define MAP_ANON 0 + if (_dl_zerofd == -1) + { + _dl_zerofd = _dl_sysdep_open_zero_fill (); + if (_dl_zerofd == -1) + { + __close (fd); + _dl_signal_error (errno, NULL, + "cannot open zero fill device"); + } + } +#endif + + __fptr_next = __mmap (0, _dl_pagesize, PROT_READ | PROT_WRITE, + MAP_ANON | MAP_PRIVATE, ANONFD, 0); + if (__fptr_next == MAP_FAILED) + _dl_signal_error(errno, NULL, "cannot map page for fptr"); + __fptr_count = _dl_pagesize / sizeof (struct hppa_fptr); + } + f = __fptr_next++; + __fptr_count--; + } + + f->func = value; + /* GOT has already been relocated in elf_get_dynamic_info - don't + try to relocate it again. */ + f->gp = sym_map->l_info[DT_PLTGOT]->d_un.d_ptr; + f->next = *loc; + *loc = f; + +found: +#ifdef _LIBC_REENTRANT + /* Release the lock. Again, remember, zero means the lock is taken! */ + if (mem == NULL) + __hppa_fptr_lock = 1; +#endif + + /* Set bit 30 to indicate to $$dyncall that this is a PLABEL. */ + return (Elf32_Addr) f | 2; +} + +void +_dl_unmap (struct link_map *map) +{ + struct hppa_fptr **floc; + struct hppa_fptr *f; + struct hppa_fptr **lloc; + struct hppa_fptr *l; + + __munmap ((void *) map->l_map_start, map->l_map_end - map->l_map_start); + +#ifdef _LIBC_REENTRANT + /* Make sure we are alone. */ + while (testandset (&__hppa_fptr_lock)); +#endif + + /* Search the sorted linked list for the first entry for this object. */ + floc = &__fptr_root; + f = *floc; + while (f != NULL && f->func < map->l_map_start) + { + floc = &f->next; + f = *floc; + } + + /* We found one. */ + if (f != NULL && f->func < map->l_map_end) + { + /* Get the last entry. */ + lloc = floc; + l = f; + while (l && l->func < map->l_map_end) + { + lloc = &l->next; + l = *lloc; + } + + /* Updated FPTR. */ + *floc = l; + + /* Prepend them to the free list. */ + *lloc = __fptr_free; + __fptr_free = f; + } + +#ifdef _LIBC_REENTRANT + /* Release the lock. */ + __hppa_fptr_lock = 1; +#endif +} + +Elf32_Addr +_dl_lookup_address (const void *address) +{ + Elf32_Addr addr = (Elf32_Addr) address; + struct hppa_fptr *f; + +#ifdef _LIBC_REENTRANT + /* Make sure we are alone. */ + while (testandset (&__hppa_fptr_lock)); +#endif + + for (f = __fptr_root; f != NULL; f = f->next) + if (f == address) + { + addr = f->func; + break; + } + +#ifdef _LIBC_REENTRANT + /* Release the lock. */ + __hppa_fptr_lock = 1; +#endif + + return addr; +} |