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| author | Tristan Gingold <gingold@adacore.com> | 2012-02-17 16:37:43 +0000 |
|---|---|---|
| committer | Tristan Gingold <gingold@adacore.com> | 2012-02-17 16:37:43 +0000 |
| commit | 8544a1503d0764c676b1825e0f4024bfb1c0197d (patch) | |
| tree | 354a46afc0d811140207d8789427e84385435536 | |
| parent | dab69f680baf93b577f85c1a9344d7ea7996f466 (diff) | |
| download | gdb-8544a1503d0764c676b1825e0f4024bfb1c0197d.zip gdb-8544a1503d0764c676b1825e0f4024bfb1c0197d.tar.gz gdb-8544a1503d0764c676b1825e0f4024bfb1c0197d.tar.bz2 | |
2012-02-17 Tristan Gingold <gingold@adacore.com>
* solib-darwin.c (darwin_current_sos): Check magic and filetype
| -rw-r--r-- | gdb/ChangeLog | 4 | ||||
| -rw-r--r-- | gdb/solib-darwin.c | 24 |
2 files changed, 26 insertions, 2 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 150760b..f4ca0c7 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,7 @@ +2012-02-17 Tristan Gingold <gingold@adacore.com> + + * solib-darwin.c (darwin_current_sos): Check magic and filetype + 2012-02-17 Thomas Schwinge <thomas@codesourcery.com> * sh-tdep.c (sh_is_renesas_calling_convention): Fix handling of diff --git a/gdb/solib-darwin.c b/gdb/solib-darwin.c index 95f8ad7..93a6aae 100644 --- a/gdb/solib-darwin.c +++ b/gdb/solib-darwin.c @@ -41,6 +41,7 @@ #include "auxv.h" #include "exceptions.h" #include "mach-o.h" +#include "mach-o/external.h" struct gdb_dyld_image_info { @@ -210,6 +211,7 @@ static struct so_list * darwin_current_sos (void) { struct type *ptr_type = builtin_type (target_gdbarch)->builtin_data_ptr; + enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch); int ptr_len = TYPE_LENGTH (ptr_type); unsigned int image_info_size; CORE_ADDR lm; @@ -226,13 +228,17 @@ darwin_current_sos (void) image_info_size = ptr_len * 3; /* Read infos for each solib. - This first entry is ignored as this is the executable itself. */ - for (i = 1; i < dyld_all_image.count; i++) + The first entry was rumored to be the executable itself, but this is not + true when a large number of shared libraries are used (table expanded ?). + We now check all entries, but discard executable images. */ + for (i = 0; i < dyld_all_image.count; i++) { CORE_ADDR info = dyld_all_image.info + i * image_info_size; char buf[image_info_size]; CORE_ADDR load_addr; CORE_ADDR path_addr; + struct mach_o_header_external hdr; + unsigned long hdr_val; char *file_path; int errcode; struct darwin_so_list *dnew; @@ -246,6 +252,20 @@ darwin_current_sos (void) load_addr = extract_typed_address (buf, ptr_type); path_addr = extract_typed_address (buf + ptr_len, ptr_type); + /* Read Mach-O header from memory. */ + if (target_read_memory (load_addr, (char *) &hdr, sizeof (hdr) - 4)) + break; + /* Discard wrong magic numbers. Shouldn't happen. */ + hdr_val = extract_unsigned_integer + (hdr.magic, sizeof (hdr.magic), byte_order); + if (hdr_val != BFD_MACH_O_MH_MAGIC && hdr_val != BFD_MACH_O_MH_MAGIC_64) + continue; + /* Discard executable. Should happen only once. */ + hdr_val = extract_unsigned_integer + (hdr.filetype, sizeof (hdr.filetype), byte_order); + if (hdr_val == BFD_MACH_O_MH_EXECUTE) + continue; + target_read_string (path_addr, &file_path, SO_NAME_MAX_PATH_SIZE - 1, &errcode); if (errcode) |