nextstep-nat-dyld-process.c [plain text]
#include "nextstep-nat-dyld-process.h"
#include "nextstep-nat-dyld-info.h"
#include "nextstep-nat-dyld-path.h"
#include "nextstep-nat-dyld-io.h"
#include "nextstep-nat-dyld.h"
#include "nextstep-nat-inferior.h"
#include "nextstep-nat-mutils.h"
#include "defs.h"
#include "inferior.h"
#include "symfile.h"
#include "symtab.h"
#include "gdbcmd.h"
#include "objfiles.h"
#include "gnu-regex.h"
#include <mach-o/nlist.h>
#include <mach-o/loader.h>
#include <mach-o/dyld_debug.h>
#include <string.h>
#include "mach-o.h"
#include "gdbcore.h"
#include "interpreter.h"
extern struct target_ops exec_ops;
extern int dyld_preload_libraries_flag;
extern int dyld_filter_events_flag;
extern int dyld_always_read_from_memory_flag;
extern char *dyld_symbols_prefix;
extern int dyld_load_dyld_symbols_flag;
extern int dyld_load_dyld_shlib_symbols_flag;
extern int dyld_load_cfm_shlib_symbols_flag;
extern int dyld_print_basenames_flag;
extern char *dyld_load_rules;
extern char *dyld_minimal_load_rules;
#if WITH_CFM
extern int inferior_auto_start_cfm_flag;
#endif
extern next_inferior_status *next_status;
static int
dyld_print_status()
{
return !gdb_current_interpreter_is_named(GDB_INTERPRETER_MI);
}
void dyld_add_inserted_libraries
(struct dyld_objfile_info *info, const struct dyld_path_info *d)
{
const char *s1, *s2;
CHECK_FATAL (info != NULL);
CHECK_FATAL (d != NULL);
s1 = d->insert_libraries;
if (s1 == NULL) { return; }
while (*s1 != '\0') {
struct dyld_objfile_entry *e = NULL;
s2 = strchr (s1, ':');
if (s2 == NULL) {
s2 = strchr (s1, '\0');
}
CHECK_FATAL (s2 != NULL);
e = dyld_objfile_entry_alloc (info);
e->user_name = savestring (s1, (s2 - s1));
e->reason = dyld_reason_init;
s1 = s2;
while (*s1 == ':') {
s1++;
}
}
}
void dyld_add_image_libraries
(struct dyld_objfile_info *info, bfd *abfd)
{
struct mach_o_data_struct *mdata = NULL;
unsigned int i;
CHECK_FATAL (info != NULL);
if (abfd == NULL) { return; }
if (! bfd_mach_o_valid (abfd)) { return; }
mdata = abfd->tdata.mach_o_data;
if (mdata == NULL)
{
dyld_debug ("dyld_add_image_libraries: mdata == NULL\n");
return;
}
for (i = 0; i < mdata->header.ncmds; i++) {
struct bfd_mach_o_load_command *cmd = &mdata->commands[i];
switch (cmd->type) {
case BFD_MACH_O_LC_LOAD_DYLINKER:
case BFD_MACH_O_LC_ID_DYLINKER:
case BFD_MACH_O_LC_LOAD_DYLIB:
case BFD_MACH_O_LC_ID_DYLIB: {
struct dyld_objfile_entry *e = NULL;
char *name = NULL;
switch (cmd->type) {
case BFD_MACH_O_LC_LOAD_DYLINKER:
case BFD_MACH_O_LC_ID_DYLINKER: {
bfd_mach_o_dylinker_command *dcmd = &cmd->command.dylinker;
name = xmalloc (dcmd->name_len + 1);
bfd_seek (abfd, dcmd->name_offset, SEEK_SET);
if (bfd_read (name, 1, dcmd->name_len, abfd) != dcmd->name_len) {
warning ("Unable to find library name for LC_LOAD_DYLINKER or LD_ID_DYLINKER command; ignoring");
free (name);
continue;
}
break;
}
case BFD_MACH_O_LC_LOAD_DYLIB:
case BFD_MACH_O_LC_ID_DYLIB: {
bfd_mach_o_dylib_command *dcmd = &cmd->command.dylib;
name = xmalloc (dcmd->name_len + 1);
bfd_seek (abfd, dcmd->name_offset, SEEK_SET);
if (bfd_read (name, 1, dcmd->name_len, abfd) != dcmd->name_len) {
warning ("Unable to find library name for LC_LOAD_DYLIB or LD_ID_DYLIB command; ignoring");
free (name);
continue;
}
break;
}
default:
abort ();
}
if (name[0] == '\0') {
warning ("No image name specified by LC_LOAD or LC_ID command; ignoring");
free (name);
name = NULL;
}
e = dyld_objfile_entry_alloc (info);
e->text_name = name;
e->text_name_valid = 1;
e->reason = dyld_reason_init;
switch (cmd->type) {
case BFD_MACH_O_LC_LOAD_DYLINKER:
case BFD_MACH_O_LC_ID_DYLINKER:
e->prefix = dyld_symbols_prefix;
break;
case BFD_MACH_O_LC_LOAD_DYLIB:
case BFD_MACH_O_LC_ID_DYLIB:
break;
default:
abort ();
};
}
default:
break;
}
}
}
void dyld_resolve_filename_image
(const struct next_dyld_thread_status *s, struct dyld_objfile_entry *e)
{
struct mach_header header;
CORE_ADDR curpos;
unsigned int i;
CHECK_FATAL (e->allocated);
if (e->image_name_valid) { return; }
if (! e->dyld_valid) { return; }
target_read_memory (e->dyld_addr, (char *) &header, sizeof (struct mach_header));
switch (header.filetype) {
case MH_DYLINKER:
case MH_DYLIB:
break;
case MH_BUNDLE:
break;
default:
return;
}
curpos = ((unsigned long) e->dyld_addr) + sizeof (struct mach_header);
for (i = 0; i < header.ncmds; i++) {
struct load_command cmd;
struct dylib_command dcmd;
struct dylinker_command dlcmd;
char name[256];
target_read_memory (curpos, (char *) &cmd, sizeof (struct load_command));
if (cmd.cmd == LC_ID_DYLIB) {
target_read_memory (curpos, (char *) &dcmd, sizeof (struct dylib_command));
target_read_memory (curpos + dcmd.dylib.name.offset, name, 256);
e->image_name = strsave (name);
e->image_name_valid = 1;
break;
} else if (cmd.cmd == LC_ID_DYLINKER) {
target_read_memory (curpos, (char *) &dlcmd, sizeof (struct dylinker_command));
target_read_memory (curpos + dlcmd.name.offset, name, 256);
e->image_name = strsave (name);
e->image_name_valid = 1;
break;
}
curpos += cmd.cmdsize;
}
if (e->image_name == NULL) {
dyld_debug ("Unable to determine filename for loaded object (no LC_ID load command)\n");
} else {
dyld_debug ("Determined filename for loaded object from image\n");
}
}
void dyld_resolve_filenames
(const struct next_dyld_thread_status *s, struct dyld_objfile_info *new)
{
unsigned int i;
CHECK_FATAL (s != NULL);
CHECK_FATAL (new != NULL);
for (i = 0; i < new->nents; i++) {
struct dyld_objfile_entry *e = &new->entries[i];
if (! e->allocated) { continue; }
if (e->dyld_name_valid) { continue; }
dyld_resolve_filename_image (s, e);
}
}
static CORE_ADDR library_offset (struct dyld_objfile_entry *e)
{
CHECK_FATAL (e != NULL);
if (e->image_addr_valid && e->dyld_valid) {
CHECK_FATAL (e->dyld_addr == ((e->image_addr + e->dyld_slide) & 0xffffffff));
}
if (e->dyld_valid) {
return (unsigned long) e->dyld_addr;
} else if (e->image_addr_valid) {
return (unsigned long) e->image_addr;
} else {
return 0;
}
}
unsigned int
dyld_parse_load_level (const char *s)
{
if (strcmp (s, "all") == 0) {
return OBJF_SYM_ALL;
} else if (strcmp (s, "container") == 0) {
return OBJF_SYM_CONTAINER;
} else if (strcmp (s, "extern") == 0) {
return OBJF_SYM_EXTERN;
} else if (strcmp (s, "none") == 0) {
return OBJF_SYM_NONE;
} else {
warning ("unknown setting \"%s\"; using \"none\"\n", s);
return OBJF_SYM_NONE;
}
}
int
dyld_resolve_load_flag (struct dyld_path_info *d, struct dyld_objfile_entry *e, const char *rules)
{
const char *name = NULL;
const char *leaf = NULL;
char **prules = NULL;
char **trule = NULL;
int nrules = 0;
int crule = 0;
name = dyld_entry_string (e, 1);
if (name == NULL)
return OBJF_SYM_NONE;
leaf = strrchr (name, '/');
leaf = ((leaf != NULL) ? leaf : name);
if (rules != NULL) {
prules = buildargv (rules);
if (prules == NULL) {
warning("unable to parse load rules");
return OBJF_SYM_NONE;
}
}
nrules = 0;
if (prules != NULL) {
for (trule = prules; *trule != NULL; trule++) {
nrules++;
}
}
if ((nrules % 3) != 0) {
warning ("unable to parse load-rules (number of rule clauses must be a multiple of 3)");
return OBJF_SYM_NONE;
}
nrules /= 3;
for (crule = 0; crule < nrules; crule++) {
char *matchreason = prules[crule * 3];
char *matchname = prules[(crule * 3) + 1];
char *setting = prules[(crule * 3) + 2];
const char *reason = NULL;
const char *name = NULL;
regex_t reasonbuf;
regex_t namebuf;
int ret;
reason = dyld_reason_string (e->reason);
if (e->objfile) {
if (e->loaded_from_memory) {
name = "memory";
} else {
name = e->loaded_name;
}
} else {
name = dyld_entry_source_filename (e);
if (name == NULL) {
return OBJF_SYM_NONE;
}
if (! dyld_entry_source_filename_is_absolute (e)) {
name = dyld_resolve_image (d, name);
}
}
if (name == NULL)
{
warning ("Couldn't find library name in dyld_resolve_load_flag.");
return OBJF_SYM_NONE;
}
ret = gdb_regcomp (&reasonbuf, matchreason, REG_NOSUB);
if (ret != 0) {
warning ("unable to compile regular expression \"%s\"", matchreason);
continue;
}
ret = gdb_regcomp (&namebuf, matchname, REG_NOSUB);
if (ret != 0) {
warning ("unable to compile regular expression \"%s\"", matchreason);
continue;
}
ret = gdb_regexec (&reasonbuf, reason, 0, 0, 0);
if (ret != 0)
continue;
ret = gdb_regexec (&namebuf, name, 0, 0, 0);
if (ret != 0)
continue;
return dyld_parse_load_level (setting);
}
return -1;
}
int dyld_minimal_load_flag (struct dyld_path_info *d, struct dyld_objfile_entry *e)
{
int ret = dyld_resolve_load_flag (d, e, dyld_minimal_load_rules);
return (ret > 0) ? ret : OBJF_SYM_NONE;
}
int dyld_default_load_flag (struct dyld_path_info *d, struct dyld_objfile_entry *e)
{
int ret = dyld_resolve_load_flag (d, e, dyld_load_rules);
if (ret >= 0)
return ret;
if (e->reason != dyld_reason_cfm) {
if (dyld_load_dyld_shlib_symbols_flag)
return OBJF_SYM_ALL;
} else {
if (dyld_load_cfm_shlib_symbols_flag)
return OBJF_SYM_ALL;
}
return OBJF_SYM_NONE;
}
void dyld_load_library (const struct dyld_path_info *d, struct dyld_objfile_entry *e)
{
int read_from_memory = 0;
const char *name = NULL;
const char *name2 = NULL;
CHECK_FATAL (e->allocated);
if (e->abfd) { return; }
if (e->loaded_error) { return; }
if ((e->reason == dyld_reason_executable) && (symfile_objfile != NULL)) {
e->abfd = symfile_objfile->obfd;
return;
}
if (dyld_always_read_from_memory_flag) {
read_from_memory = 1;
}
if (! read_from_memory) {
name = dyld_entry_source_filename (e);
if (name == NULL) {
char *s = dyld_entry_string (e, 1);
warning ("No image filename available for %s; reading from memory", s);
free (s);
read_from_memory = 1;
}
}
if (! read_from_memory) {
name2 = name;
if (! dyld_entry_source_filename_is_absolute (e)) {
name2 = dyld_resolve_image (d, name);
}
if (name2 == NULL) {
char *s = dyld_entry_string (e, 1);
warning ("Unable to resolve source pathname for %s; reading from memory", s);
free (s);
read_from_memory = 1;
}
}
if (read_from_memory && (! e->dyld_valid)) {
char *s = dyld_entry_string (e, dyld_print_basenames_flag);
warning ("Unable to read symbols from %s (not yet mapped into memory); skipping", s);
return;
}
if (! read_from_memory) {
CHECK_FATAL (name2 != NULL);
e->abfd = symfile_bfd_open_safe (name2);
if (e->abfd == NULL) {
char *s = dyld_entry_string (e, 1);
warning ("Unable to read symbols from %s; reading from memory.", s);
free (s);
}
e->loaded_name = name2;
e->loaded_from_memory = 0;
}
if (e->abfd == NULL) {
CHECK_FATAL (e->dyld_valid);
e->abfd = inferior_bfd (name, e->dyld_addr, e->dyld_slide, e->dyld_length);
e->loaded_memaddr = e->dyld_addr;
e->loaded_from_memory = 1;
}
if (e->abfd == NULL) {
char *s = dyld_entry_string (e, 1);
e->loaded_error = 1;
warning ("Unable to read symbols from %s; skipping.", s);
free (s);
return;
}
if (e->reason & dyld_reason_image)
{
asection *text_sect = bfd_get_section_by_name (e->abfd, "LC_SEGMENT.__TEXT");
if (text_sect != NULL) {
e->image_addr = bfd_section_vma (e->abfd, text_sect);
e->image_addr_valid = 1;
} else {
char *s = dyld_entry_string (e, 1);
warning ("Unable to locate text section for %s (no section \"%s\")", s, "LC_SEGMENT.__TEXT");
}
}
}
void dyld_load_libraries (const struct dyld_path_info *d, struct dyld_objfile_info *result)
{
unsigned int i;
CHECK_FATAL (result != NULL);
for (i = 0; i < result->nents; i++) {
struct dyld_objfile_entry *e = &result->entries[i];
if (! e->allocated) { continue; }
if (e->load_flag < 0) {
e->load_flag = dyld_default_load_flag (d, e) | dyld_minimal_load_flag (d, e);
}
if (e->load_flag) {
dyld_load_library (d, e);
}
}
}
void dyld_load_symfile (struct dyld_objfile_entry *e)
{
char *name = NULL;
char *leaf = NULL;
struct section_addr_info addrs;
unsigned int i;
if (e->objfile) { return; }
if (e->loaded_error) { return; }
CHECK_FATAL (e->allocated);
CHECK_FATAL (e->objfile == NULL);
CHECK_FATAL (e->dyld_valid || (e->image_addr != 0));
CHECK_FATAL (e->abfd != NULL);
if ((e->reason == dyld_reason_executable) && (symfile_objfile != NULL)) {
e->objfile = symfile_objfile;
e->abfd = symfile_objfile->obfd;
e->loaded_from_memory = 0;
e->loaded_name = e->text_name;
e->loaded_addr = 0;
e->loaded_addrisoffset = 1;
return;
}
name = dyld_entry_string (e, dyld_print_basenames_flag);
leaf = strrchr (name, '/');
leaf = ((leaf != NULL) ? leaf : name);
if (e->dyld_valid) {
e->loaded_addr = e->dyld_addr;
e->loaded_addrisoffset = 0;
} else if (e->image_addr_valid) {
e->loaded_addr = e->image_addr;
e->loaded_addrisoffset = 0;
} else {
e->loaded_addrisoffset = 1;
}
for (i = 0; i < MAX_SECTIONS; i++) {
addrs.other[i].name = NULL;
addrs.other[i].addr = e->dyld_slide;
addrs.other[i].sectindex = 0;
}
addrs.addrs_are_offsets = 1;
e->objfile = symbol_file_add_bfd_safe (e->abfd, 0, &addrs, 0, 0, e->load_flag, 0, e->prefix);
#if WITH_CFM
while (strstr (leaf, "CarbonCore") != NULL) {
struct minimal_symbol *hooksym = lookup_minimal_symbol ("gPCFMInfoHooks", NULL, NULL);
struct minimal_symbol *system = lookup_minimal_symbol ("gPCFMSystemUniverse", NULL, NULL);
struct minimal_symbol *context = lookup_minimal_symbol ("gPCFMContextUniverse", NULL, NULL);
struct cfm_parser *parser = &next_status->cfm_status.parser;
CORE_ADDR offset = 0;
if ((hooksym == NULL) || (system == NULL) || (context == NULL))
break;
offset = SYMBOL_VALUE_ADDRESS (context) - SYMBOL_VALUE_ADDRESS (system);
if (offset == 88) {
parser->version = 3;
parser->universe_length = 88;
parser->universe_container_offset = 48;
parser->universe_connection_offset = 60;
parser->universe_closure_offset = 72;
parser->connection_length = 68;
parser->connection_next_offset = 0;
parser->connection_container_offset = 28;
parser->container_length = 176;
parser->container_address_offset = 24;
parser->container_length_offset = 28;
parser->container_fragment_name_offset = 44;
parser->container_section_count_offset = 100;
parser->container_sections_offset = 104;
parser->section_length = 24;
parser->section_total_length_offset = 12;
parser->instance_length = 24;
parser->instance_address_offset = 12;
next_status->cfm_status.breakpoint_offset = 392;
} else if (offset == 104) {
parser->version = 2;
parser->universe_length = 104;
parser->universe_container_offset = 52;
parser->universe_connection_offset = 68;
parser->universe_closure_offset = 84;
parser->connection_length = 72;
parser->connection_next_offset = 0;
parser->connection_container_offset = 32;
parser->container_length = 176;
parser->container_address_offset = 28;
parser->container_length_offset = 36;
parser->container_fragment_name_offset = 44;
parser->container_section_count_offset = 100;
parser->container_sections_offset = 104;
parser->section_length = 24;
parser->section_total_length_offset = 12;
parser->instance_length = 24;
parser->instance_address_offset = 12;
next_status->cfm_status.breakpoint_offset = 864;
} else if (offset == 120) {
parser->version = 1;
parser->universe_length = 120;
parser->universe_container_offset = 68;
parser->universe_connection_offset = 84;
parser->universe_closure_offset = 100;
parser->connection_length = 84;
parser->connection_next_offset = 0;
parser->connection_container_offset = 36;
parser->container_length = 172;
parser->container_address_offset = 28;
parser->container_length_offset = 32;
parser->container_fragment_name_offset = 40;
parser->container_section_count_offset = 96;
parser->container_sections_offset = 100;
parser->section_length = 24;
parser->section_total_length_offset = 12;
parser->instance_length = 24;
parser->instance_address_offset = 12;
next_status->cfm_status.breakpoint_offset = 864;
} else {
warning ("unable to determine CFM version; disabling CFM support");
parser->version = 0;
break;
}
next_status->cfm_status.info_api_cookie = SYMBOL_VALUE_ADDRESS (hooksym);
dyld_debug ("Found gPCFMInfoHooks in CarbonCore: 0x%lx with version %d\n",
SYMBOL_VALUE_ADDRESS (hooksym), parser->version);
if (inferior_auto_start_cfm_flag)
next_cfm_thread_create (&next_status->cfm_status, next_status->task);
break;
}
#endif
free (name);
if (e->objfile != NULL) {
CHECK_FATAL (e->objfile->obfd != NULL);
}
if (e->objfile == NULL) {
e->loaded_error = 1;
e->abfd = NULL;
free (name);
return;
}
if (e->reason == dyld_reason_executable) {
CHECK_FATAL (symfile_objfile == NULL);
symfile_objfile = e->objfile;
return;
}
}
void dyld_load_symfiles (struct dyld_objfile_info *result)
{
unsigned int i;
unsigned int first = 1;
CHECK_FATAL (result != NULL);
for (i = 0; i < result->nents; i++) {
struct dyld_objfile_entry *e = &result->entries[i];
if (! e->allocated) { continue; }
if (e->objfile != NULL) { continue; }
if (e->loaded_error) { continue; }
if ((! e->dyld_valid) && (e->image_addr == 0)) {
if (info_verbose) {
dyld_debug ("Deferring load (not pre-bound)\n");
}
continue;
}
if (e->abfd == NULL) {
continue;
}
if (first && (! info_verbose) && dyld_print_status()) {
first = 0;
printf_filtered ("Reading symbols for shared libraries ");
gdb_flush (gdb_stdout);
}
dyld_load_symfile (e);
if ((! info_verbose) && dyld_print_status()) {
printf_filtered (".");
gdb_flush (gdb_stdout);
}
}
if ((! first) && (! info_verbose) && dyld_print_status()) {
printf_filtered (" done\n");
gdb_flush (gdb_stdout);
}
}
static int dyld_objfile_allocated (struct objfile *o)
{
struct objfile *objfile, *temp;
ALL_OBJFILES_SAFE (objfile, temp) {
if (o == objfile) {
return 1;
}
}
return 0;
}
void dyld_remove_objfile (struct dyld_objfile_entry *e)
{
char *s = NULL;
CHECK_FATAL (e->allocated);
if ((e->reason == dyld_reason_executable) && (e->objfile == NULL)) {
e->objfile = symfile_objfile;
}
if (e->objfile == NULL) { return; }
CHECK_FATAL (dyld_objfile_allocated (e->objfile));
CHECK_FATAL (e->objfile->obfd != NULL);
s = dyld_entry_string (e, dyld_print_basenames_flag);
if (info_verbose) {
printf_filtered ("Removing symbols for %s\n", s);
}
free (s);
gdb_flush (gdb_stdout);
free_objfile (e->objfile);
e->objfile = NULL;
e->abfd = NULL;
gdb_flush (gdb_stdout);
if (e->reason == dyld_reason_executable) {
symfile_objfile = NULL;
}
}
void dyld_remove_objfiles (const struct dyld_path_info *d, struct dyld_objfile_info *result)
{
unsigned int i;
unsigned int first = 1;
CHECK_FATAL (result != NULL);
for (i = 0; i < result->nents; i++) {
struct dyld_objfile_entry *e = &result->entries[i];
struct objfile *o = NULL;
if (! e->allocated) { continue; }
if (e->load_flag < 0) {
e->load_flag = dyld_default_load_flag (d, e) | dyld_minimal_load_flag (d, e);
}
if ((e->reason == dyld_reason_executable) && (e->objfile == NULL)) {
o = symfile_objfile;
} else {
o = e->objfile;
}
if ((o != NULL) && (e->load_flag != o->symflags)) {
dyld_remove_objfile (e);
if (first && (! info_verbose) && dyld_print_status()) {
first = 0;
printf_filtered ("Removing symbols for unused shared libraries ");
gdb_flush (gdb_stdout);
}
if ((! info_verbose) && dyld_print_status()) {
printf_filtered (".");
gdb_flush (gdb_stdout);
}
}
}
if ((! first) && (! info_verbose) && dyld_print_status()) {
printf_filtered (" done\n");
gdb_flush (gdb_stdout);
}
}
static int dyld_libraries_similar
(struct dyld_objfile_entry *f, struct dyld_objfile_entry *l)
{
const char *fname = NULL;
const char *lname = NULL;
const char *fbase = NULL;
const char *lbase = NULL;
unsigned int flen = 0;
unsigned int llen = 0;
CHECK_FATAL (f != NULL);
CHECK_FATAL (l != NULL);
fname = dyld_entry_source_filename (f);
lname = dyld_entry_source_filename (l);
if ((lname != NULL) && (fname != NULL)) {
int f_is_framework, f_is_bundle;
int l_is_framework, l_is_bundle;
dyld_library_basename (fname, &fbase, &flen, &f_is_framework, &f_is_bundle);
dyld_library_basename (lname, &lbase, &llen, &l_is_framework, &l_is_bundle);
if ((flen != llen) || (strncmp (fbase, lbase, llen) != 0))
return 0;
if (f_is_framework != l_is_framework)
return 0;
if (f_is_bundle != l_is_bundle)
return 0;
return 1;
}
if (library_offset (f) == library_offset (l)
&& (library_offset (f) != 0)
&& (library_offset (l) != 0)) {
return 1;
}
return 0;
}
static int dyld_libraries_compatible
(struct dyld_path_info *d,
struct dyld_objfile_entry *f, struct dyld_objfile_entry *l)
{
const char *fname = NULL;
const char *lname = NULL;
const char *fres = NULL;
const char *lres = NULL;
CHECK_FATAL (f != NULL);
CHECK_FATAL (l != NULL);
fname = dyld_entry_source_filename (f);
lname = dyld_entry_source_filename (l);
if (strcmp (f->prefix, l->prefix) != 0) {
return 0;
}
if (library_offset (f) != library_offset (l)
&& (library_offset (f) != 0)
&& (library_offset (l) != 0)) {
return 0;
}
if ((fname != NULL) && (lname != NULL)) {
fres = fname;
if (! dyld_entry_source_filename_is_absolute (f)) {
fres = dyld_resolve_image (d, fname);
}
lres = lname;
if (! dyld_entry_source_filename_is_absolute (l)) {
lres = dyld_resolve_image (d, lname);
}
if ((fres == NULL) != (lres == NULL)) {
return 0;
}
if ((fres == NULL) && (lres == NULL)) {
if (strcmp (fname, lname) != 0) {
return 0;
}
}
CHECK_FATAL ((fres != NULL) && (lres != NULL));
if (strcmp (fres, lres) != 0) {
return 0;
}
}
if (dyld_always_read_from_memory_flag) {
if (f->loaded_from_memory != l->loaded_from_memory) {
return 0;
}
}
return 1;
}
void dyld_objfile_move_load_data
(struct dyld_objfile_entry *f, struct dyld_objfile_entry *l)
{
l->objfile = f->objfile;
l->abfd = f->abfd;
if (l->load_flag < 0) {
l->load_flag = f->load_flag;
}
l->loaded_name = f->loaded_name;
l->loaded_memaddr = f->loaded_memaddr;
l->loaded_addr = f->loaded_addr;
l->loaded_offset = f->loaded_offset;
l->loaded_addrisoffset = f->loaded_addrisoffset;
l->loaded_from_memory = f->loaded_from_memory;
l->loaded_error = f->loaded_error;
f->objfile = NULL;
f->abfd = NULL;
f->load_flag = -1;
f->loaded_name = NULL;
f->loaded_memaddr = 0;
f->loaded_addr = 0;
f->loaded_offset = 0;
f->loaded_addrisoffset = 0;
f->loaded_from_memory = 0;
f->loaded_error = 0;
}
void dyld_check_discarded (struct dyld_objfile_info *info)
{
unsigned int j;
for (j = 0; j < info->nents; j++) {
struct dyld_objfile_entry *e = &info->entries[j];
if ((e->abfd == NULL) && (e->objfile == NULL) && (! e->loaded_error)) {
dyld_objfile_entry_clear (e);
}
}
}
void dyld_merge_shlibs
(const struct next_dyld_thread_status *s,
struct dyld_path_info *d,
struct dyld_objfile_info *old,
struct dyld_objfile_info *new,
struct dyld_objfile_info *result)
{
unsigned int i;
unsigned int j;
CHECK_FATAL (old != NULL);
CHECK_FATAL (new != NULL);
CHECK_FATAL (result != NULL);
CHECK_FATAL (old != new);
CHECK_FATAL (old != result);
CHECK_FATAL (new != result);
dyld_resolve_filenames (s, new);
for (i = 0; i < new->nents; i++) {
struct dyld_objfile_entry *n = &new->entries[i];
if (! n->allocated) { continue; }
for (j = 0; j < old->nents; j++) {
struct dyld_objfile_entry *o = &old->entries[j];
if (! o->allocated) { continue; }
if (o->reason == dyld_reason_executable) {
dyld_debug ("Removing old executable objfile entry\n");
dyld_objfile_entry_clear (o);
continue;
}
if (dyld_libraries_similar (n, o)) {
if (o->objfile != NULL) {
char *ns = dyld_entry_string (n, dyld_print_basenames_flag);
char *os = dyld_entry_string (o, dyld_print_basenames_flag);
CHECK_FATAL (dyld_objfile_allocated (o->objfile));
if (dyld_libraries_compatible (d, n, o)) {
dyld_debug ("Symbols for %s already loaded; not re-processing\n", os);
dyld_objfile_move_load_data (o, n);
} else if (n->reason == dyld_reason_init) {
dyld_debug ("Symbols for %s incompatible with %s, but may need to be re-loaded; deferring\n", os);
dyld_objfile_move_load_data (o, n);
} else {
dyld_debug ("Symbols for %s incompatible with %s; reloading\n", os, ns);
dyld_remove_objfile (o);
}
xfree (ns);
xfree (os);
} else {
if (dyld_libraries_compatible (d, n, o)) {
dyld_objfile_move_load_data (o, n);
}
}
dyld_objfile_entry_clear (o);
}
}
}
for (i = 0; i < old->nents; i++) {
struct dyld_objfile_entry *o = &old->entries[i];
struct dyld_objfile_entry *e = NULL;
if (! o->allocated) { continue; }
e = dyld_objfile_entry_alloc (result);
*e = *o;
e->reason = dyld_reason_cached;
dyld_objfile_entry_clear (o);
}
for (i = 0; i < new->nents; i++) {
struct dyld_objfile_entry *n = &new->entries[i];
struct dyld_objfile_entry *e = NULL;
if (! n->allocated) { continue; }
e = dyld_objfile_entry_alloc (result);
*e = *n;
dyld_objfile_entry_clear (n);
}
dyld_remove_objfiles (d, result);
dyld_objfile_info_pack (result);
}
void dyld_update_shlibs
(const struct next_dyld_thread_status *s,
struct dyld_path_info *d,
struct dyld_objfile_info *old,
struct dyld_objfile_info *new,
struct dyld_objfile_info *result)
{
CHECK_FATAL (old != NULL);
CHECK_FATAL (new != NULL);
CHECK_FATAL (result != NULL);
dyld_debug ("dyld_update_shlibs: updating shared library information\n");
dyld_merge_shlibs (s, d, old, new, result);
dyld_load_libraries (d, result);
dyld_load_symfiles (result);
update_section_tables (¤t_target);
update_section_tables (&exec_ops);
reread_symbols ();
breakpoint_re_set ();
breakpoint_update ();
re_enable_breakpoints_in_shlibs (0);
}
static void dyld_process_image_event
(struct dyld_objfile_info *info,
const struct dyld_event *event)
{
struct dyld_debug_module module;
struct mach_header header;
CORE_ADDR addr, slide;
CHECK_FATAL (info != NULL);
CHECK_FATAL (event != NULL);
module = event->arg[0];
addr = (unsigned long) (((unsigned char *) module.header) - ((unsigned char *) 0));
slide = (unsigned long) module.vmaddr_slide;
target_read_memory (addr, (char *) &header, sizeof (struct mach_header));
switch (header.filetype) {
case MH_EXECUTE: {
struct dyld_objfile_entry *e = dyld_objfile_entry_alloc (info);
e->dyld_addr = addr;
e->dyld_slide = slide;
e->dyld_valid = 1;
e->dyld_index = module.module_index;
e->reason = dyld_reason_executable;
dyld_debug ("Noted executable at 0x%lx (offset 0x%lx)\n", (unsigned long) addr, slide);
break;
}
case MH_FVMLIB:
dyld_debug ("Ignored fixed virtual memory shared library at 0x%lx (offset 0x%lx)\n",
(unsigned long) addr, slide);
break;
case MH_PRELOAD:
dyld_debug ("Ignored preloaded executable at 0x%lx (offset 0x%lx)\n", (unsigned long) addr, slide);
break;
case MH_DYLIB: {
struct dyld_objfile_entry *e = dyld_objfile_entry_alloc (info);
e->dyld_addr = addr;
e->dyld_slide = slide;
e->dyld_valid = 1;
e->dyld_index = module.module_index;
e->reason = dyld_reason_dyld;
dyld_debug ("Noted dynamic library at 0x%lx (offset 0x%lx)\n", (unsigned long) addr, slide);
break;
}
case MH_DYLINKER: {
struct dyld_objfile_entry *e = dyld_objfile_entry_alloc (info);
e->dyld_addr = addr;
e->dyld_slide = slide;
e->dyld_valid = 1;
e->dyld_index = module.module_index;
e->prefix = dyld_symbols_prefix;
e->reason = dyld_reason_dyld;
dyld_debug ("Noted dynamic link editor at 0x%lx (offset 0x%lx)\n", (unsigned long) addr, slide);
break;
}
case MH_BUNDLE: {
struct dyld_objfile_entry *e = dyld_objfile_entry_alloc (info);
e->dyld_addr = addr;
e->dyld_slide = slide;
e->dyld_valid = 1;
e->dyld_index = module.module_index;
e->reason = dyld_reason_dyld;
dyld_debug ("Noted bundle at 0x%lx (offset 0x%lx)\n", (unsigned long) addr, slide);
break;
}
default:
warning ("Ignored unknown object module at 0x%lx (offset 0x%lx) with type 0x%lx\n",
(unsigned long) addr, (unsigned long) slide, (unsigned long) header.filetype);
break;
}
}
void dyld_purge_cached_libraries (struct dyld_objfile_info *info)
{
unsigned int i;
CHECK_FATAL (info != NULL);
for (i = 0; i < info->nents; i++) {
struct dyld_objfile_entry *e = &info->entries[i];
if (! e->allocated) { continue; }
if (e->reason == dyld_reason_cached) {
dyld_remove_objfile (e);
dyld_objfile_entry_clear (e);
}
}
dyld_objfile_info_pack (info);
update_section_tables (¤t_target);
update_section_tables (&exec_ops);
reread_symbols ();
breakpoint_re_set ();
breakpoint_update ();
re_enable_breakpoints_in_shlibs (0);
}
void
_initialize_nextstep_nat_dyld_process ()
{
}