diff options
Diffstat (limited to 'gdb/solib-sunos.c')
| -rw-r--r-- | gdb/solib-sunos.c | 895 |
1 files changed, 0 insertions, 895 deletions
diff --git a/gdb/solib-sunos.c b/gdb/solib-sunos.c deleted file mode 100644 index 0f81d05efa4..00000000000 --- a/gdb/solib-sunos.c +++ /dev/null @@ -1,895 +0,0 @@ -/* Handle SunOS shared libraries for GDB, the GNU Debugger. - Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, - 2001 - Free Software Foundation, Inc. - - This file is part of GDB. - - 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 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., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -#include "defs.h" - -#include <sys/types.h> -#include <signal.h> -#include "gdb_string.h" -#include <sys/param.h> -#include <fcntl.h> - - /* SunOS shared libs need the nlist structure. */ -#include <a.out.h> -#include <link.h> - -#include "symtab.h" -#include "bfd.h" -#include "symfile.h" -#include "objfiles.h" -#include "gdbcore.h" -#include "inferior.h" -#include "solist.h" - -/* Link map info to include in an allocated so_list entry */ - -struct lm_info - { - /* Pointer to copy of link map from inferior. The type is char * - rather than void *, so that we may use byte offsets to find the - various fields without the need for a cast. */ - char *lm; - }; - - -/* Symbols which are used to locate the base of the link map structures. */ - -static char *debug_base_symbols[] = -{ - "_DYNAMIC", - "_DYNAMIC__MGC", - NULL -}; - -static char *main_name_list[] = -{ - "main_$main", - NULL -}; - -/* Macro to extract an address from a solib structure. - When GDB is configured for some 32-bit targets (e.g. Solaris 2.7 - sparc), BFD is configured to handle 64-bit targets, so CORE_ADDR is - 64 bits. We have to extract only the significant bits of addresses - to get the right address when accessing the core file BFD. */ - -#define SOLIB_EXTRACT_ADDRESS(MEMBER) \ - extract_address (&(MEMBER), sizeof (MEMBER)) - -/* local data declarations */ - -static struct link_dynamic dynamic_copy; -static struct link_dynamic_2 ld_2_copy; -static struct ld_debug debug_copy; -static CORE_ADDR debug_addr; -static CORE_ADDR flag_addr; - -#ifndef offsetof -#define offsetof(TYPE, MEMBER) ((unsigned long) &((TYPE *)0)->MEMBER) -#endif -#define fieldsize(TYPE, MEMBER) (sizeof (((TYPE *)0)->MEMBER)) - -/* link map access functions */ - -static CORE_ADDR -LM_ADDR (struct so_list *so) -{ - int lm_addr_offset = offsetof (struct link_map, lm_addr); - int lm_addr_size = fieldsize (struct link_map, lm_addr); - - return (CORE_ADDR) extract_signed_integer (so->lm_info->lm + lm_addr_offset, - lm_addr_size); -} - -static CORE_ADDR -LM_NEXT (struct so_list *so) -{ - int lm_next_offset = offsetof (struct link_map, lm_next); - int lm_next_size = fieldsize (struct link_map, lm_next); - - return extract_address (so->lm_info->lm + lm_next_offset, lm_next_size); -} - -static CORE_ADDR -LM_NAME (struct so_list *so) -{ - int lm_name_offset = offsetof (struct link_map, lm_name); - int lm_name_size = fieldsize (struct link_map, lm_name); - - return extract_address (so->lm_info->lm + lm_name_offset, lm_name_size); -} - -static CORE_ADDR debug_base; /* Base of dynamic linker structures */ - -/* Local function prototypes */ - -static int match_main (char *); - -/* Allocate the runtime common object file. */ - -static void -allocate_rt_common_objfile (void) -{ - struct objfile *objfile; - struct objfile *last_one; - - objfile = (struct objfile *) xmalloc (sizeof (struct objfile)); - memset (objfile, 0, sizeof (struct objfile)); - objfile->md = NULL; - obstack_specify_allocation (&objfile->psymbol_cache.cache, 0, 0, - xmalloc, xfree); - obstack_specify_allocation (&objfile->psymbol_obstack, 0, 0, xmalloc, - xfree); - obstack_specify_allocation (&objfile->symbol_obstack, 0, 0, xmalloc, - xfree); - obstack_specify_allocation (&objfile->type_obstack, 0, 0, xmalloc, - xfree); - objfile->name = mstrsave (objfile->md, "rt_common"); - - /* Add this file onto the tail of the linked list of other such files. */ - - objfile->next = NULL; - if (object_files == NULL) - object_files = objfile; - else - { - for (last_one = object_files; - last_one->next; - last_one = last_one->next); - last_one->next = objfile; - } - - rt_common_objfile = objfile; -} - -/* Read all dynamically loaded common symbol definitions from the inferior - and put them into the minimal symbol table for the runtime common - objfile. */ - -static void -solib_add_common_symbols (CORE_ADDR rtc_symp) -{ - struct rtc_symb inferior_rtc_symb; - struct nlist inferior_rtc_nlist; - int len; - char *name; - - /* Remove any runtime common symbols from previous runs. */ - - if (rt_common_objfile != NULL && rt_common_objfile->minimal_symbol_count) - { - obstack_free (&rt_common_objfile->symbol_obstack, 0); - obstack_specify_allocation (&rt_common_objfile->symbol_obstack, 0, 0, - xmalloc, xfree); - rt_common_objfile->minimal_symbol_count = 0; - rt_common_objfile->msymbols = NULL; - } - - init_minimal_symbol_collection (); - make_cleanup_discard_minimal_symbols (); - - while (rtc_symp) - { - read_memory (rtc_symp, - (char *) &inferior_rtc_symb, - sizeof (inferior_rtc_symb)); - read_memory (SOLIB_EXTRACT_ADDRESS (inferior_rtc_symb.rtc_sp), - (char *) &inferior_rtc_nlist, - sizeof (inferior_rtc_nlist)); - if (inferior_rtc_nlist.n_type == N_COMM) - { - /* FIXME: The length of the symbol name is not available, but in the - current implementation the common symbol is allocated immediately - behind the name of the symbol. */ - len = inferior_rtc_nlist.n_value - inferior_rtc_nlist.n_un.n_strx; - - name = xmalloc (len); - read_memory (SOLIB_EXTRACT_ADDRESS (inferior_rtc_nlist.n_un.n_name), - name, len); - - /* Allocate the runtime common objfile if necessary. */ - if (rt_common_objfile == NULL) - allocate_rt_common_objfile (); - - prim_record_minimal_symbol (name, inferior_rtc_nlist.n_value, - mst_bss, rt_common_objfile); - xfree (name); - } - rtc_symp = SOLIB_EXTRACT_ADDRESS (inferior_rtc_symb.rtc_next); - } - - /* Install any minimal symbols that have been collected as the current - minimal symbols for the runtime common objfile. */ - - install_minimal_symbols (rt_common_objfile); -} - - -/* - - LOCAL FUNCTION - - locate_base -- locate the base address of dynamic linker structs - - SYNOPSIS - - CORE_ADDR locate_base (void) - - DESCRIPTION - - For both the SunOS and SVR4 shared library implementations, if the - inferior executable has been linked dynamically, there is a single - address somewhere in the inferior's data space which is the key to - locating all of the dynamic linker's runtime structures. This - address is the value of the debug base symbol. The job of this - function is to find and return that address, or to return 0 if there - is no such address (the executable is statically linked for example). - - For SunOS, the job is almost trivial, since the dynamic linker and - all of it's structures are statically linked to the executable at - link time. Thus the symbol for the address we are looking for has - already been added to the minimal symbol table for the executable's - objfile at the time the symbol file's symbols were read, and all we - have to do is look it up there. Note that we explicitly do NOT want - to find the copies in the shared library. - - The SVR4 version is a bit more complicated because the address - is contained somewhere in the dynamic info section. We have to go - to a lot more work to discover the address of the debug base symbol. - Because of this complexity, we cache the value we find and return that - value on subsequent invocations. Note there is no copy in the - executable symbol tables. - - */ - -static CORE_ADDR -locate_base (void) -{ - struct minimal_symbol *msymbol; - CORE_ADDR address = 0; - char **symbolp; - - /* For SunOS, we want to limit the search for the debug base symbol to the - executable being debugged, since there is a duplicate named symbol in the - shared library. We don't want the shared library versions. */ - - for (symbolp = debug_base_symbols; *symbolp != NULL; symbolp++) - { - msymbol = lookup_minimal_symbol (*symbolp, NULL, symfile_objfile); - if ((msymbol != NULL) && (SYMBOL_VALUE_ADDRESS (msymbol) != 0)) - { - address = SYMBOL_VALUE_ADDRESS (msymbol); - return (address); - } - } - return (0); -} - -/* - - LOCAL FUNCTION - - first_link_map_member -- locate first member in dynamic linker's map - - SYNOPSIS - - static CORE_ADDR first_link_map_member (void) - - DESCRIPTION - - Find the first element in the inferior's dynamic link map, and - return its address in the inferior. This function doesn't copy the - link map entry itself into our address space; current_sos actually - does the reading. */ - -static CORE_ADDR -first_link_map_member (void) -{ - CORE_ADDR lm = 0; - - read_memory (debug_base, (char *) &dynamic_copy, sizeof (dynamic_copy)); - if (dynamic_copy.ld_version >= 2) - { - /* It is a version that we can deal with, so read in the secondary - structure and find the address of the link map list from it. */ - read_memory (SOLIB_EXTRACT_ADDRESS (dynamic_copy.ld_un.ld_2), - (char *) &ld_2_copy, sizeof (struct link_dynamic_2)); - lm = SOLIB_EXTRACT_ADDRESS (ld_2_copy.ld_loaded); - } - return (lm); -} - -static int -open_symbol_file_object (void *from_ttyp) -{ - return 1; -} - - -/* LOCAL FUNCTION - - current_sos -- build a list of currently loaded shared objects - - SYNOPSIS - - struct so_list *current_sos () - - DESCRIPTION - - Build a list of `struct so_list' objects describing the shared - objects currently loaded in the inferior. This list does not - include an entry for the main executable file. - - Note that we only gather information directly available from the - inferior --- we don't examine any of the shared library files - themselves. The declaration of `struct so_list' says which fields - we provide values for. */ - -static struct so_list * -sunos_current_sos (void) -{ - CORE_ADDR lm; - struct so_list *head = 0; - struct so_list **link_ptr = &head; - int errcode; - char *buffer; - - /* Make sure we've looked up the inferior's dynamic linker's base - structure. */ - if (! debug_base) - { - debug_base = locate_base (); - - /* If we can't find the dynamic linker's base structure, this - must not be a dynamically linked executable. Hmm. */ - if (! debug_base) - return 0; - } - - /* Walk the inferior's link map list, and build our list of - `struct so_list' nodes. */ - lm = first_link_map_member (); - while (lm) - { - struct so_list *new - = (struct so_list *) xmalloc (sizeof (struct so_list)); - struct cleanup *old_chain = make_cleanup (xfree, new); - - memset (new, 0, sizeof (*new)); - - new->lm_info = xmalloc (sizeof (struct lm_info)); - make_cleanup (xfree, new->lm_info); - - new->lm_info->lm = xmalloc (sizeof (struct link_map)); - make_cleanup (xfree, new->lm_info->lm); - memset (new->lm_info->lm, 0, sizeof (struct link_map)); - - read_memory (lm, new->lm_info->lm, sizeof (struct link_map)); - - lm = LM_NEXT (new); - - /* Extract this shared object's name. */ - target_read_string (LM_NAME (new), &buffer, - SO_NAME_MAX_PATH_SIZE - 1, &errcode); - if (errcode != 0) - { - warning ("current_sos: Can't read pathname for load map: %s\n", - safe_strerror (errcode)); - } - else - { - strncpy (new->so_name, buffer, SO_NAME_MAX_PATH_SIZE - 1); - new->so_name[SO_NAME_MAX_PATH_SIZE - 1] = '\0'; - xfree (buffer); - strcpy (new->so_original_name, new->so_name); - } - - /* If this entry has no name, or its name matches the name - for the main executable, don't include it in the list. */ - if (! new->so_name[0] - || match_main (new->so_name)) - free_so (new); - else - { - new->next = 0; - *link_ptr = new; - link_ptr = &new->next; - } - - discard_cleanups (old_chain); - } - - return head; -} - - -/* On some systems, the only way to recognize the link map entry for - the main executable file is by looking at its name. Return - non-zero iff SONAME matches one of the known main executable names. */ - -static int -match_main (char *soname) -{ - char **mainp; - - for (mainp = main_name_list; *mainp != NULL; mainp++) - { - if (strcmp (soname, *mainp) == 0) - return (1); - } - - return (0); -} - - -static int -sunos_in_dynsym_resolve_code (CORE_ADDR pc) -{ - return 0; -} - -/* - - LOCAL FUNCTION - - disable_break -- remove the "mapping changed" breakpoint - - SYNOPSIS - - static int disable_break () - - DESCRIPTION - - Removes the breakpoint that gets hit when the dynamic linker - completes a mapping change. - - */ - -static int -disable_break (void) -{ - CORE_ADDR breakpoint_addr; /* Address where end bkpt is set */ - - int in_debugger = 0; - - /* Read the debugger structure from the inferior to retrieve the - address of the breakpoint and the original contents of the - breakpoint address. Remove the breakpoint by writing the original - contents back. */ - - read_memory (debug_addr, (char *) &debug_copy, sizeof (debug_copy)); - - /* Set `in_debugger' to zero now. */ - - write_memory (flag_addr, (char *) &in_debugger, sizeof (in_debugger)); - - breakpoint_addr = SOLIB_EXTRACT_ADDRESS (debug_copy.ldd_bp_addr); - write_memory (breakpoint_addr, (char *) &debug_copy.ldd_bp_inst, - sizeof (debug_copy.ldd_bp_inst)); - - /* For the SVR4 version, we always know the breakpoint address. For the - SunOS version we don't know it until the above code is executed. - Grumble if we are stopped anywhere besides the breakpoint address. */ - - if (stop_pc != breakpoint_addr) - { - warning ("stopped at unknown breakpoint while handling shared libraries"); - } - - return 1; -} - - -/* - - LOCAL FUNCTION - - enable_break -- arrange for dynamic linker to hit breakpoint - - SYNOPSIS - - int enable_break (void) - - DESCRIPTION - - Both the SunOS and the SVR4 dynamic linkers have, as part of their - debugger interface, support for arranging for the inferior to hit - a breakpoint after mapping in the shared libraries. This function - enables that breakpoint. - - For SunOS, there is a special flag location (in_debugger) which we - set to 1. When the dynamic linker sees this flag set, it will set - a breakpoint at a location known only to itself, after saving the - original contents of that place and the breakpoint address itself, - in it's own internal structures. When we resume the inferior, it - will eventually take a SIGTRAP when it runs into the breakpoint. - We handle this (in a different place) by restoring the contents of - the breakpointed location (which is only known after it stops), - chasing around to locate the shared libraries that have been - loaded, then resuming. - - For SVR4, the debugger interface structure contains a member (r_brk) - which is statically initialized at the time the shared library is - built, to the offset of a function (_r_debug_state) which is guaran- - teed to be called once before mapping in a library, and again when - the mapping is complete. At the time we are examining this member, - it contains only the unrelocated offset of the function, so we have - to do our own relocation. Later, when the dynamic linker actually - runs, it relocates r_brk to be the actual address of _r_debug_state(). - - The debugger interface structure also contains an enumeration which - is set to either RT_ADD or RT_DELETE prior to changing the mapping, - depending upon whether or not the library is being mapped or unmapped, - and then set to RT_CONSISTENT after the library is mapped/unmapped. - */ - -static int -enable_break (void) -{ - int success = 0; - int j; - int in_debugger; - - /* Get link_dynamic structure */ - - j = target_read_memory (debug_base, (char *) &dynamic_copy, - sizeof (dynamic_copy)); - if (j) - { - /* unreadable */ - return (0); - } - - /* Calc address of debugger interface structure */ - - debug_addr = SOLIB_EXTRACT_ADDRESS (dynamic_copy.ldd); - - /* Calc address of `in_debugger' member of debugger interface structure */ - - flag_addr = debug_addr + (CORE_ADDR) ((char *) &debug_copy.ldd_in_debugger - - (char *) &debug_copy); - - /* Write a value of 1 to this member. */ - - in_debugger = 1; - write_memory (flag_addr, (char *) &in_debugger, sizeof (in_debugger)); - success = 1; - - return (success); -} - -/* - - LOCAL FUNCTION - - special_symbol_handling -- additional shared library symbol handling - - SYNOPSIS - - void special_symbol_handling () - - DESCRIPTION - - Once the symbols from a shared object have been loaded in the usual - way, we are called to do any system specific symbol handling that - is needed. - - For SunOS4, this consists of grunging around in the dynamic - linkers structures to find symbol definitions for "common" symbols - and adding them to the minimal symbol table for the runtime common - objfile. - - */ - -static void -sunos_special_symbol_handling (void) -{ - int j; - - if (debug_addr == 0) - { - /* Get link_dynamic structure */ - - j = target_read_memory (debug_base, (char *) &dynamic_copy, - sizeof (dynamic_copy)); - if (j) - { - /* unreadable */ - return; - } - - /* Calc address of debugger interface structure */ - /* FIXME, this needs work for cross-debugging of core files - (byteorder, size, alignment, etc). */ - - debug_addr = SOLIB_EXTRACT_ADDRESS (dynamic_copy.ldd); - } - - /* Read the debugger structure from the inferior, just to make sure - we have a current copy. */ - - j = target_read_memory (debug_addr, (char *) &debug_copy, - sizeof (debug_copy)); - if (j) - return; /* unreadable */ - - /* Get common symbol definitions for the loaded object. */ - - if (debug_copy.ldd_cp) - { - solib_add_common_symbols (SOLIB_EXTRACT_ADDRESS (debug_copy.ldd_cp)); - } -} - -/* Relocate the main executable. This function should be called upon - stopping the inferior process at the entry point to the program. - The entry point from BFD is compared to the PC and if they are - different, the main executable is relocated by the proper amount. - - As written it will only attempt to relocate executables which - lack interpreter sections. It seems likely that only dynamic - linker executables will get relocated, though it should work - properly for a position-independent static executable as well. */ - -static void -sunos_relocate_main_executable (void) -{ - asection *interp_sect; - CORE_ADDR pc = read_pc (); - - /* Decide if the objfile needs to be relocated. As indicated above, - we will only be here when execution is stopped at the beginning - of the program. Relocation is necessary if the address at which - we are presently stopped differs from the start address stored in - the executable AND there's no interpreter section. The condition - regarding the interpreter section is very important because if - there *is* an interpreter section, execution will begin there - instead. When there is an interpreter section, the start address - is (presumably) used by the interpreter at some point to start - execution of the program. - - If there is an interpreter, it is normal for it to be set to an - arbitrary address at the outset. The job of finding it is - handled in enable_break(). - - So, to summarize, relocations are necessary when there is no - interpreter section and the start address obtained from the - executable is different from the address at which GDB is - currently stopped. - - [ The astute reader will note that we also test to make sure that - the executable in question has the DYNAMIC flag set. It is my - opinion that this test is unnecessary (undesirable even). It - was added to avoid inadvertent relocation of an executable - whose e_type member in the ELF header is not ET_DYN. There may - be a time in the future when it is desirable to do relocations - on other types of files as well in which case this condition - should either be removed or modified to accomodate the new file - type. (E.g, an ET_EXEC executable which has been built to be - position-independent could safely be relocated by the OS if - desired. It is true that this violates the ABI, but the ABI - has been known to be bent from time to time.) - Kevin, Nov 2000. ] - */ - - interp_sect = bfd_get_section_by_name (exec_bfd, ".interp"); - if (interp_sect == NULL - && (bfd_get_file_flags (exec_bfd) & DYNAMIC) != 0 - && bfd_get_start_address (exec_bfd) != pc) - { - struct cleanup *old_chain; - struct section_offsets *new_offsets; - int i, changed; - CORE_ADDR displacement; - - /* It is necessary to relocate the objfile. The amount to - relocate by is simply the address at which we are stopped - minus the starting address from the executable. - - We relocate all of the sections by the same amount. This - behavior is mandated by recent editions of the System V ABI. - According to the System V Application Binary Interface, - Edition 4.1, page 5-5: - - ... Though the system chooses virtual addresses for - individual processes, it maintains the segments' relative - positions. Because position-independent code uses relative - addressesing between segments, the difference between - virtual addresses in memory must match the difference - between virtual addresses in the file. The difference - between the virtual address of any segment in memory and - the corresponding virtual address in the file is thus a - single constant value for any one executable or shared - object in a given process. This difference is the base - address. One use of the base address is to relocate the - memory image of the program during dynamic linking. - - The same language also appears in Edition 4.0 of the System V - ABI and is left unspecified in some of the earlier editions. */ - - displacement = pc - bfd_get_start_address (exec_bfd); - changed = 0; - - new_offsets = xcalloc (symfile_objfile->num_sections, - sizeof (struct section_offsets)); - old_chain = make_cleanup (xfree, new_offsets); - - for (i = 0; i < symfile_objfile->num_sections; i++) - { - if (displacement != ANOFFSET (symfile_objfile->section_offsets, i)) - changed = 1; - new_offsets->offsets[i] = displacement; - } - - if (changed) - objfile_relocate (symfile_objfile, new_offsets); - - do_cleanups (old_chain); - } -} - -/* - - GLOBAL FUNCTION - - sunos_solib_create_inferior_hook -- shared library startup support - - SYNOPSIS - - void sunos_solib_create_inferior_hook() - - DESCRIPTION - - When gdb starts up the inferior, it nurses it along (through the - shell) until it is ready to execute it's first instruction. At this - point, this function gets called via expansion of the macro - SOLIB_CREATE_INFERIOR_HOOK. - - For SunOS executables, this first instruction is typically the - one at "_start", or a similar text label, regardless of whether - the executable is statically or dynamically linked. The runtime - startup code takes care of dynamically linking in any shared - libraries, once gdb allows the inferior to continue. - - For SVR4 executables, this first instruction is either the first - instruction in the dynamic linker (for dynamically linked - executables) or the instruction at "start" for statically linked - executables. For dynamically linked executables, the system - first exec's /lib/libc.so.N, which contains the dynamic linker, - and starts it running. The dynamic linker maps in any needed - shared libraries, maps in the actual user executable, and then - jumps to "start" in the user executable. - - For both SunOS shared libraries, and SVR4 shared libraries, we - can arrange to cooperate with the dynamic linker to discover the - names of shared libraries that are dynamically linked, and the - base addresses to which they are linked. - - This function is responsible for discovering those names and - addresses, and saving sufficient information about them to allow - their symbols to be read at a later time. - - FIXME - - Between enable_break() and disable_break(), this code does not - properly handle hitting breakpoints which the user might have - set in the startup code or in the dynamic linker itself. Proper - handling will probably have to wait until the implementation is - changed to use the "breakpoint handler function" method. - - Also, what if child has exit()ed? Must exit loop somehow. - */ - -static void -sunos_solib_create_inferior_hook (void) -{ - /* Relocate the main executable if necessary. */ - sunos_relocate_main_executable (); - - if ((debug_base = locate_base ()) == 0) - { - /* Can't find the symbol or the executable is statically linked. */ - return; - } - - if (!enable_break ()) - { - warning ("shared library handler failed to enable breakpoint"); - return; - } - - /* SCO and SunOS need the loop below, other systems should be using the - special shared library breakpoints and the shared library breakpoint - service routine. - - Now run the target. It will eventually hit the breakpoint, at - which point all of the libraries will have been mapped in and we - can go groveling around in the dynamic linker structures to find - out what we need to know about them. */ - - clear_proceed_status (); - stop_soon_quietly = 1; - stop_signal = TARGET_SIGNAL_0; - do - { - target_resume (pid_to_ptid (-1), 0, stop_signal); - wait_for_inferior (); - } - while (stop_signal != TARGET_SIGNAL_TRAP); - stop_soon_quietly = 0; - - /* We are now either at the "mapping complete" breakpoint (or somewhere - else, a condition we aren't prepared to deal with anyway), so adjust - the PC as necessary after a breakpoint, disable the breakpoint, and - add any shared libraries that were mapped in. */ - - if (DECR_PC_AFTER_BREAK) - { - stop_pc -= DECR_PC_AFTER_BREAK; - write_register (PC_REGNUM, stop_pc); - } - - if (!disable_break ()) - { - warning ("shared library handler failed to disable breakpoint"); - } - - solib_add ((char *) 0, 0, (struct target_ops *) 0, auto_solib_add); -} - -static void -sunos_clear_solib (void) -{ - debug_base = 0; -} - -static void -sunos_free_so (struct so_list *so) -{ - xfree (so->lm_info->lm); - xfree (so->lm_info); -} - -static void -sunos_relocate_section_addresses (struct so_list *so, - struct section_table *sec) -{ - sec->addr += LM_ADDR (so); - sec->endaddr += LM_ADDR (so); -} - -static struct target_so_ops sunos_so_ops; - -void -_initialize_sunos_solib (void) -{ - sunos_so_ops.relocate_section_addresses = sunos_relocate_section_addresses; - sunos_so_ops.free_so = sunos_free_so; - sunos_so_ops.clear_solib = sunos_clear_solib; - sunos_so_ops.solib_create_inferior_hook = sunos_solib_create_inferior_hook; - sunos_so_ops.special_symbol_handling = sunos_special_symbol_handling; - sunos_so_ops.current_sos = sunos_current_sos; - sunos_so_ops.open_symbol_file_object = open_symbol_file_object; - sunos_so_ops.in_dynsym_resolve_code = sunos_in_dynsym_resolve_code; - - /* FIXME: Don't do this here. *_gdbarch_init() should set so_ops. */ - current_target_so_ops = &sunos_so_ops; -} |