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