X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=bfd%2Fhpux-core.c;h=cf6749cf79f51f1d4412e0bb75fcd40f45b00aad;hb=7a0801a90405cc2ff07b7b9f04abb4ec9184fd43;hp=afda81389ad345946d50c6694b5edd6cff2e4cd0;hpb=4c3721d5147489f4ba880871de0eafb025a4543f;p=deliverable%2Fbinutils-gdb.git diff --git a/bfd/hpux-core.c b/bfd/hpux-core.c index afda81389a..cf6749cf79 100644 --- a/bfd/hpux-core.c +++ b/bfd/hpux-core.c @@ -1,35 +1,35 @@ /* BFD back-end for HP/UX core files. - Copyright 1993 Free Software Foundation, Inc. + Copyright 1993, 1994, 1996, 1998, 1999, 2001, 2002, 2003, 2004, 2006, + 2007 Free Software Foundation, Inc. Written by Stu Grossman, Cygnus Support. Converted to back-end form by Ian Lance Taylor, Cygnus SUpport -This file is part of BFD, the Binary File Descriptor library. + This file is part of BFD, the Binary File Descriptor library. -This program is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2 of the License, or -(at your option) any later version. + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. -This program 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 General Public License for more details. + This program 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 General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, + MA 02110-1301, USA. */ -You should have received a copy of the GNU General Public License -along with this program; if not, write to the Free Software -Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* This file can only be compiled on systems which use HP/UX style - core files. In the config/XXXXXX.mh file for such a system add - HDEFINES=-DHPUX_CORE - HDEPFILES=hpux-core.o - */ + core files. */ -#include "bfd.h" #include "sysdep.h" +#include "bfd.h" #include "libbfd.h" -#if defined (HOST_HPPAHPUX) || defined (HOST_HP300HPUX) +#if defined (HOST_HPPAHPUX) || defined (HOST_HP300HPUX) || defined (HOST_HPPAMPEIX) /* FIXME: sys/core.h doesn't exist for HPUX version 7. HPUX version 5, 6, and 7 core files seem to be standard trad-core.c type core @@ -48,51 +48,88 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #endif /* HOST_HPPABSD */ -#include -#include #include -#include +#ifdef HAVE_DIRENT_H +# include +#else +# ifdef HAVE_SYS_NDIR_H +# include +# endif +# ifdef HAVE_SYS_DIR_H +# include +# endif +# ifdef HAVE_NDIR_H +# include +# endif +#endif #include +#ifdef HPUX_CORE #include -#include /* After a.out.h */ +#endif #include -#include + +/* Kludge: There's no explicit mechanism provided by sys/core.h to + conditionally know whether a proc_info has thread id fields. + However, CORE_ANON_SHMEM shows up first at 10.30, which is + happily also when meaningful thread id's show up in proc_info. */ +#if defined(CORE_ANON_SHMEM) +#define PROC_INFO_HAS_THREAD_ID (1) +#endif + +/* This type appears at HP-UX 10.30. Defining it if not defined + by sys/core.h allows us to build for older HP-UX's, and (since + it won't be encountered in core-dumps from older HP-UX's) is + harmless. */ +#if !defined(CORE_ANON_SHMEM) +#define CORE_ANON_SHMEM 0x00000200 /* anonymous shared memory */ +#endif /* These are stored in the bfd's tdata */ -struct hpux_core_struct +/* .lwpid and .user_tid are only valid if PROC_INFO_HAS_THREAD_ID, else they + are set to 0. Also, until HP-UX implements MxN threads, .user_tid and + .lwpid are synonymous. */ +struct hpux_core_struct { int sig; + int lwpid; /* Kernel thread ID. */ + unsigned long user_tid; /* User thread ID. */ char cmd[MAXCOMLEN + 1]; - asection *data_section; - asection *stack_section; - asection *reg_section; }; #define core_hdr(bfd) ((bfd)->tdata.hpux_core_data) #define core_signal(bfd) (core_hdr(bfd)->sig) #define core_command(bfd) (core_hdr(bfd)->cmd) -#define core_datasec(bfd) (core_hdr(bfd)->data_section) -#define core_stacksec(bfd) (core_hdr(bfd)->stack_section) -#define core_regsec(bfd) (core_hdr(bfd)->reg_section) +#define core_kernel_thread_id(bfd) (core_hdr(bfd)->lwpid) +#define core_user_thread_id(bfd) (core_hdr(bfd)->user_tid) +#define hpux_core_core_file_matches_executable_p generic_core_file_matches_executable_p + +static asection *make_bfd_asection (bfd *, const char *, flagword, + bfd_size_type, bfd_vma, unsigned int); +static const bfd_target *hpux_core_core_file_p (bfd *); +static char *hpux_core_core_file_failing_command (bfd *); +static int hpux_core_core_file_failing_signal (bfd *); +static void swap_abort (void); static asection * -make_bfd_asection (abfd, name, flags, _raw_size, vma, alignment_power) - bfd *abfd; - CONST char *name; - flagword flags; - bfd_size_type _raw_size; - bfd_vma vma; - unsigned int alignment_power; +make_bfd_asection (bfd *abfd, const char *name, flagword flags, + bfd_size_type size, bfd_vma vma, + unsigned int alignment_power) { asection *asect; + char *newname; + + newname = bfd_alloc (abfd, (bfd_size_type) strlen (name) + 1); + if (!newname) + return NULL; - asect = bfd_make_section (abfd, name); + strcpy (newname, name); + + asect = bfd_make_section_anyway_with_flags (abfd, newname, flags); if (!asect) return NULL; - asect->flags = flags; - asect->_raw_size = _raw_size; + asect->size = size; asect->vma = vma; asect->filepos = bfd_tell (abfd); asect->alignment_power = alignment_power; @@ -100,21 +137,34 @@ make_bfd_asection (abfd, name, flags, _raw_size, vma, alignment_power) return asect; } -static asymbol * -hpux_core_make_empty_symbol (abfd) - bfd *abfd; +/* Return true if the given core file section corresponds to a thread, + based on its name. */ + +static int +thread_section_p (bfd *abfd ATTRIBUTE_UNUSED, + asection *sect, + void *obj ATTRIBUTE_UNUSED) { - asymbol *new = (asymbol *) bfd_zalloc (abfd, sizeof (asymbol)); - new->the_bfd = abfd; - return new; + return CONST_STRNEQ (sect->name, ".reg/"); } -static bfd_target * -hpux_core_core_file_p (abfd) - bfd *abfd; +/* this function builds a bfd target if the file is a corefile. + It returns null or 0 if it finds out thaat it is not a core file. + The way it checks this is by looking for allowed 'type' field values. + These are declared in sys/core.h + There are some values which are 'reserved for future use'. In particular + CORE_NONE is actually defined as 0. This may be a catch-all for cases + in which the core file is generated by some non-hpux application. + (I am just guessing here!) +*/ +static const bfd_target * +hpux_core_core_file_p (bfd *abfd) { + int good_sections = 0; + int unknown_sections = 0; + core_hdr (abfd) = (struct hpux_core_struct *) - bfd_zalloc (abfd, sizeof (struct hpux_core_struct)); + bfd_zalloc (abfd, (bfd_size_type) sizeof (struct hpux_core_struct)); if (!core_hdr (abfd)) return NULL; @@ -123,166 +173,215 @@ hpux_core_core_file_p (abfd) int val; struct corehead core_header; - val = bfd_read ((void *) &core_header, 1, sizeof core_header, abfd); + val = bfd_bread ((void *) &core_header, + (bfd_size_type) sizeof core_header, abfd); if (val <= 0) break; switch (core_header.type) { case CORE_KERNEL: case CORE_FORMAT: - bfd_seek (abfd, core_header.len, SEEK_CUR); /* Just skip this */ + /* Just skip this. */ + bfd_seek (abfd, (file_ptr) core_header.len, SEEK_CUR); + good_sections++; break; case CORE_EXEC: { struct proc_exec proc_exec; - bfd_read ((void *) &proc_exec, 1, core_header.len, abfd); + if (bfd_bread ((void *) &proc_exec, (bfd_size_type) core_header.len, + abfd) != core_header.len) + break; strncpy (core_command (abfd), proc_exec.cmd, MAXCOMLEN + 1); + good_sections++; } break; case CORE_PROC: { struct proc_info proc_info; - core_regsec (abfd) = make_bfd_asection (abfd, ".reg", - SEC_ALLOC + SEC_HAS_CONTENTS, - core_header.len, - (int) &proc_info - (int) &proc_info.hw_regs, - 2); - bfd_read (&proc_info, 1, core_header.len, abfd); + char secname[100]; /* Of arbitrary size, but plenty large. */ + + /* We need to read this section, 'cause we need to determine + whether the core-dumped app was threaded before we create + any .reg sections. */ + if (bfd_bread (&proc_info, (bfd_size_type) core_header.len, abfd) + != core_header.len) + break; + + /* However, we also want to create those sections with the + file positioned at the start of the record, it seems. */ + if (bfd_seek (abfd, -((file_ptr) core_header.len), SEEK_CUR) != 0) + break; + +#if defined(PROC_INFO_HAS_THREAD_ID) + core_kernel_thread_id (abfd) = proc_info.lwpid; + core_user_thread_id (abfd) = proc_info.user_tid; +#else + core_kernel_thread_id (abfd) = 0; + core_user_thread_id (abfd) = 0; +#endif + /* If the program was unthreaded, then we'll just create a + .reg section. + + If the program was threaded, then we'll create .reg/XXXXX + section for each thread, where XXXXX is a printable + representation of the kernel thread id. We'll also + create a .reg section for the thread that was running + and signalled at the time of the core-dump (i.e., this + is effectively an alias, needed to keep GDB happy.) + + Note that we use `.reg/XXXXX' as opposed to '.regXXXXX' + because GDB expects that .reg2 will be the floating- + point registers. */ + if (core_kernel_thread_id (abfd) == 0) + { + if (!make_bfd_asection (abfd, ".reg", + SEC_HAS_CONTENTS, + core_header.len, + (bfd_vma) offsetof (struct proc_info, + hw_regs), + 2)) + goto fail; + } + else + { + /* There are threads. Is this the one that caused the + core-dump? We'll claim it was the running thread. */ + if (proc_info.sig != -1) + { + if (!make_bfd_asection (abfd, ".reg", + SEC_HAS_CONTENTS, + core_header.len, + (bfd_vma)offsetof (struct proc_info, + hw_regs), + 2)) + goto fail; + } + /* We always make one of these sections, for every thread. */ + sprintf (secname, ".reg/%d", core_kernel_thread_id (abfd)); + if (!make_bfd_asection (abfd, secname, + SEC_HAS_CONTENTS, + core_header.len, + (bfd_vma) offsetof (struct proc_info, + hw_regs), + 2)) + goto fail; + } core_signal (abfd) = proc_info.sig; + if (bfd_seek (abfd, (file_ptr) core_header.len, SEEK_CUR) != 0) + break; + good_sections++; } - if (!core_regsec (abfd)) - return NULL; break; + case CORE_DATA: - core_datasec (abfd) = make_bfd_asection (abfd, ".data", - SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS, - core_header.len, - core_header.addr, - 2); - if (!core_datasec (abfd)) - return NULL; - bfd_seek (abfd, core_header.len, SEEK_CUR); - break; case CORE_STACK: - core_stacksec (abfd) = make_bfd_asection (abfd, ".stack", - SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS, - core_header.len, - core_header.addr, - 2); - if (!core_stacksec (abfd)) - return NULL; - bfd_seek (abfd, core_header.len, SEEK_CUR); + case CORE_TEXT: + case CORE_MMF: + case CORE_SHM: + case CORE_ANON_SHMEM: + if (!make_bfd_asection (abfd, ".data", + SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS, + core_header.len, + (bfd_vma) core_header.addr, 2)) + goto fail; + + bfd_seek (abfd, (file_ptr) core_header.len, SEEK_CUR); + good_sections++; break; - default: - /* Falling into here is an error and should prevent this - target from matching. That way systems which use hpux - cores along with other formats can still work. */ - return 0; + + case CORE_NONE: + /* Let's not punt if we encounter a section of unknown + type. Rather, let's make a note of it. If we later + see that there were also "good" sections, then we'll + declare that this a core file, but we'll also warn that + it may be incompatible with this gdb. + */ + unknown_sections++; + break; + + default: + goto fail; /*unrecognized core file type */ } } /* OK, we believe you. You're a core file (sure, sure). */ + /* On HP/UX, we sometimes encounter core files where none of the threads + was found to be the running thread (ie the signal was set to -1 for + all threads). This happens when the program was aborted externally + via a TT_CORE ttrace system call. In that case, we just pick one + thread at random to be the active thread. */ + if (core_kernel_thread_id (abfd) != 0 + && bfd_get_section_by_name (abfd, ".reg") == NULL) + { + asection *asect = bfd_sections_find_if (abfd, thread_section_p, NULL); + asection *reg_sect; + + if (asect != NULL) + { + reg_sect = make_bfd_asection (abfd, ".reg", asect->flags, + asect->size, asect->vma, + asect->alignment_power); + if (reg_sect == NULL) + goto fail; + + reg_sect->filepos = asect->filepos; + } + } + + /* Were there sections of unknown type? If so, yet there were + at least some complete sections of known type, then, issue + a warning. Possibly the core file was generated on a version + of HP-UX that is incompatible with that for which this gdb was + built. + */ + if ((unknown_sections > 0) && (good_sections > 0)) + (*_bfd_error_handler) + ("%s appears to be a core file,\nbut contains unknown sections. It may have been created on an incompatible\nversion of HP-UX. As a result, some information may be unavailable.\n", + abfd->filename); + return abfd->xvec; + + fail: + bfd_release (abfd, core_hdr (abfd)); + core_hdr (abfd) = NULL; + bfd_section_list_clear (abfd); + return NULL; } static char * -hpux_core_core_file_failing_command (abfd) - bfd *abfd; +hpux_core_core_file_failing_command (bfd *abfd) { return core_command (abfd); } -/* ARGSUSED */ static int -hpux_core_core_file_failing_signal (abfd) - bfd *abfd; +hpux_core_core_file_failing_signal (bfd *abfd) { return core_signal (abfd); } -/* ARGSUSED */ -static boolean -hpux_core_core_file_matches_executable_p (core_bfd, exec_bfd) - bfd *core_bfd, *exec_bfd; -{ - return true; /* FIXME, We have no way of telling at this point */ -} -/* No archive file support via this BFD */ -#define hpux_core_openr_next_archived_file bfd_generic_openr_next_archived_file -#define hpux_core_generic_stat_arch_elt bfd_generic_stat_arch_elt -#define hpux_core_slurp_armap bfd_false -#define hpux_core_slurp_extended_name_table bfd_true -#define hpux_core_write_armap (boolean (*) PARAMS \ - ((bfd *arch, unsigned int elength, struct orl *map, \ - unsigned int orl_count, int stridx))) bfd_false -#define hpux_core_truncate_arname bfd_dont_truncate_arname - -#define hpux_core_close_and_cleanup bfd_generic_close_and_cleanup -#define hpux_core_set_section_contents (boolean (*) PARAMS \ - ((bfd *abfd, asection *section, PTR data, file_ptr offset, \ - bfd_size_type count))) bfd_false -#define hpux_core_get_section_contents bfd_generic_get_section_contents -#define hpux_core_new_section_hook (boolean (*) PARAMS \ - ((bfd *, sec_ptr))) bfd_true -#define hpux_core_get_symtab_upper_bound bfd_0u -#define hpux_core_get_symtab (unsigned int (*) PARAMS \ - ((bfd *, struct symbol_cache_entry **))) bfd_0u -#define hpux_core_get_reloc_upper_bound (unsigned int (*) PARAMS \ - ((bfd *, sec_ptr))) bfd_0u -#define hpux_core_canonicalize_reloc (unsigned int (*) PARAMS \ - ((bfd *, sec_ptr, arelent **, struct symbol_cache_entry**))) bfd_0u -#define hpux_core_print_symbol (void (*) PARAMS \ - ((bfd *, PTR, struct symbol_cache_entry *, \ - bfd_print_symbol_type))) bfd_false -#define hpux_core_get_symbol_info (void (*) PARAMS \ - ((bfd *, struct symbol_cache_entry *, \ - symbol_info *))) bfd_false -#define hpux_core_get_lineno (alent * (*) PARAMS \ - ((bfd *, struct symbol_cache_entry *))) bfd_nullvoidptr -#define hpux_core_set_arch_mach (boolean (*) PARAMS \ - ((bfd *, enum bfd_architecture, unsigned long))) bfd_false -#define hpux_core_find_nearest_line (boolean (*) PARAMS \ - ((bfd *abfd, struct sec *section, \ - struct symbol_cache_entry **symbols,bfd_vma offset, \ - CONST char **file, CONST char **func, unsigned int *line))) bfd_false -#define hpux_core_sizeof_headers (int (*) PARAMS \ - ((bfd *, boolean))) bfd_0 - -#define hpux_core_bfd_debug_info_start bfd_void -#define hpux_core_bfd_debug_info_end bfd_void -#define hpux_core_bfd_debug_info_accumulate (void (*) PARAMS \ - ((bfd *, struct sec *))) bfd_void -#define hpux_core_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents -#define hpux_core_bfd_relax_section bfd_generic_relax_section -#define hpux_core_bfd_reloc_type_lookup \ - ((CONST struct reloc_howto_struct *(*) PARAMS ((bfd *, bfd_reloc_code_real_type))) bfd_nullvoidptr) -#define hpux_core_bfd_make_debug_symbol \ - ((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr) -#define hpux_core_bfd_link_hash_table_create \ - ((struct bfd_link_hash_table *(*) PARAMS ((bfd *))) bfd_nullvoidptr) -#define hpux_core_bfd_link_add_symbols \ - ((boolean (*) PARAMS ((bfd *, struct bfd_link_info *))) bfd_false) -#define hpux_core_bfd_final_link \ - ((boolean (*) PARAMS ((bfd *, struct bfd_link_info *))) bfd_false) - /* If somebody calls any byte-swapping routines, shoot them. */ -void -swap_abort() +static void +swap_abort (void) { abort(); /* This way doesn't require any declaration for ANSI to fuck up */ } -#define NO_GET ((bfd_vma (*) PARAMS (( bfd_byte *))) swap_abort ) -#define NO_PUT ((void (*) PARAMS ((bfd_vma, bfd_byte *))) swap_abort ) -#define NO_SIGNED_GET ((bfd_signed_vma (*) PARAMS ((bfd_byte *))) swap_abort ) -bfd_target hpux_core_vec = +#define NO_GET ((bfd_vma (*) (const void *)) swap_abort) +#define NO_PUT ((void (*) (bfd_vma, void *)) swap_abort) +#define NO_GETS ((bfd_signed_vma (*) (const void *)) swap_abort) +#define NO_GET64 ((bfd_uint64_t (*) (const void *)) swap_abort) +#define NO_PUT64 ((void (*) (bfd_uint64_t, void *)) swap_abort) +#define NO_GETS64 ((bfd_int64_t (*) (const void *)) swap_abort) + +const bfd_target hpux_core_vec = { "hpux-core", bfd_target_unknown_flavour, - true, /* target byte order */ - true, /* target headers byte order */ + BFD_ENDIAN_BIG, /* target byte order */ + BFD_ENDIAN_BIG, /* target headers byte order */ (HAS_RELOC | EXEC_P | /* object flags */ HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED), @@ -290,29 +389,39 @@ bfd_target hpux_core_vec = 0, /* symbol prefix */ ' ', /* ar_pad_char */ 16, /* ar_max_namelen */ - 3, /* minimum alignment power */ - NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit data */ - NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit data */ - NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit data */ - NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit hdrs */ - NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit hdrs */ - NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit hdrs */ + NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit data */ + NO_GET, NO_GETS, NO_PUT, /* 32 bit data */ + NO_GET, NO_GETS, NO_PUT, /* 16 bit data */ + NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit hdrs */ + NO_GET, NO_GETS, NO_PUT, /* 32 bit hdrs */ + NO_GET, NO_GETS, NO_PUT, /* 16 bit hdrs */ { /* bfd_check_format */ - _bfd_dummy_target, /* unknown format */ - _bfd_dummy_target, /* object file */ - _bfd_dummy_target, /* archive */ - hpux_core_core_file_p /* a core file */ + _bfd_dummy_target, /* unknown format */ + _bfd_dummy_target, /* object file */ + _bfd_dummy_target, /* archive */ + hpux_core_core_file_p /* a core file */ }, { /* bfd_set_format */ - bfd_false, bfd_false, - bfd_false, bfd_false + bfd_false, bfd_false, + bfd_false, bfd_false }, { /* bfd_write_contents */ - bfd_false, bfd_false, - bfd_false, bfd_false + bfd_false, bfd_false, + bfd_false, bfd_false }, - - JUMP_TABLE(hpux_core), + + BFD_JUMP_TABLE_GENERIC (_bfd_generic), + BFD_JUMP_TABLE_COPY (_bfd_generic), + BFD_JUMP_TABLE_CORE (hpux_core), + BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), + BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols), + BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), + BFD_JUMP_TABLE_WRITE (_bfd_generic), + BFD_JUMP_TABLE_LINK (_bfd_nolink), + BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), + + NULL, + (PTR) 0 /* backend_data */ -}; + };