diff options
Diffstat (limited to 'gdb/symfile-mem.c')
| -rw-r--r-- | gdb/symfile-mem.c | 38 |
1 files changed, 31 insertions, 7 deletions
diff --git a/gdb/symfile-mem.c b/gdb/symfile-mem.c index e3230de..3f09c4d 100644 --- a/gdb/symfile-mem.c +++ b/gdb/symfile-mem.c @@ -76,13 +76,14 @@ target_read_memory_bfd (bfd_vma memaddr, bfd_byte *myaddr, bfd_size_type len) } /* Read inferior memory at ADDR to find the header of a loaded object file - and read its in-core symbols out of inferior memory. TEMPL is a bfd + and read its in-core symbols out of inferior memory. SIZE, if + non-zero, is the known size of the object. TEMPL is a bfd representing the target's format. NAME is the name to use for this symbol file in messages; it can be NULL or a malloc-allocated string which will be attached to the BFD. */ static struct objfile * -symbol_file_add_from_memory (struct bfd *templ, CORE_ADDR addr, char *name, - int from_tty) +symbol_file_add_from_memory (struct bfd *templ, CORE_ADDR addr, + size_t size, char *name, int from_tty) { struct objfile *objf; struct bfd *nbfd; @@ -95,7 +96,7 @@ symbol_file_add_from_memory (struct bfd *templ, CORE_ADDR addr, char *name, if (bfd_get_flavour (templ) != bfd_target_elf_flavour) error (_("add-symbol-file-from-memory not supported for this target")); - nbfd = bfd_elf_bfd_from_remote_memory (templ, addr, &loadbase, + nbfd = bfd_elf_bfd_from_remote_memory (templ, addr, size, &loadbase, target_read_memory_bfd); if (nbfd == NULL) error (_("Failed to read a valid object file image from memory.")); @@ -158,7 +159,7 @@ add_symbol_file_from_memory_command (char *args, int from_tty) error (_("Must use symbol-file or exec-file " "before add-symbol-file-from-memory.")); - symbol_file_add_from_memory (templ, addr, NULL, from_tty); + symbol_file_add_from_memory (templ, addr, 0, NULL, from_tty); } /* Arguments for symbol_file_add_from_memory_wrapper. */ @@ -167,6 +168,7 @@ struct symbol_file_add_from_memory_args { struct bfd *bfd; CORE_ADDR sysinfo_ehdr; + size_t size; char *name; int from_tty; }; @@ -179,8 +181,25 @@ symbol_file_add_from_memory_wrapper (struct ui_out *uiout, void *data) { struct symbol_file_add_from_memory_args *args = data; - symbol_file_add_from_memory (args->bfd, args->sysinfo_ehdr, args->name, - args->from_tty); + symbol_file_add_from_memory (args->bfd, args->sysinfo_ehdr, args->size, + args->name, args->from_tty); + return 0; +} + +/* Rummage through mappings to find the vsyscall page size. */ + +static int +find_vdso_size (CORE_ADDR vaddr, unsigned long size, + int read, int write, int exec, int modified, + void *data) +{ + struct symbol_file_add_from_memory_args *args = data; + + if (vaddr == args->sysinfo_ehdr) + { + args->size = size; + return 1; + } return 0; } @@ -217,6 +236,11 @@ add_vsyscall_page (struct target_ops *target, int from_tty) } args.bfd = bfd; args.sysinfo_ehdr = sysinfo_ehdr; + args.size = 0; + if (gdbarch_find_memory_regions_p (target_gdbarch ())) + (void) gdbarch_find_memory_regions (target_gdbarch (), + find_vdso_size, &args); + args.name = xstrprintf ("system-supplied DSO at %s", paddress (target_gdbarch (), sysinfo_ehdr)); /* Pass zero for FROM_TTY, because the action of loading the |