aboutsummaryrefslogtreecommitdiff
path: root/bfd/coff-we32k.c
diff options
context:
space:
mode:
authorNick Clifton <nickc@redhat.com>2014-11-26 14:11:23 +0000
committerNick Clifton <nickc@redhat.com>2014-11-26 14:11:23 +0000
commita11652892c18324bf3abb8b25c01475e5a18632a (patch)
tree651732ecd80594056102f5b551cc7ed6f0b5143f /bfd/coff-we32k.c
parent0cfd832fc7d4f1b5633248754dcc75fa90b5475b (diff)
downloadgdb-a11652892c18324bf3abb8b25c01475e5a18632a.zip
gdb-a11652892c18324bf3abb8b25c01475e5a18632a.tar.gz
gdb-a11652892c18324bf3abb8b25c01475e5a18632a.tar.bz2
More fixes for memory access errors triggered by attemps to examine corrupted binaries.
PR binutils/17512 * dwarf.c (display_block): Do nothing if the block starts after the end of the buffer. (read_and_display_attr_value): Add range checks. (struct Frame_Chunk): Make the ncols and ra fields unsigned. (frame_need_space): Test for an ncols of zero. (read_cie): Fail if the augmentation data extends off the end of the buffer. (display_debug_frames): Add checks for read_cie failing. Add range checks. * coff-h8300.c (rtype2howto): Replace abort with returning a NULL value. * coff-h8500.c (rtype2howto): Likewise. * coff-tic30.c (rtype2howto): Likewise. * coff-z80.c (rtype2howto): Likewise. * coff-z8k.c (rtype2howto): Likewise. * coff-ia64.c (RTYPE2HOWTO): Always return a valid howto. * coff-m68k.c (m68k_rtype2howto): Return a NULL howto if none could be found. * coff-mcore.c (RTYPE2HOWTO): Add range checking. * coff-w65.c (rtype2howto): Likewise. * coff-we32k.c (RTYPE2HOWTO): Likewise. * pe-mips.c (RTYPE2HOWTO): Likewise. * coff-x86_64.c (coff_amd64_reloc): Likewise. Replace abort with an error return. * coffcode.h (coff_slurp_reloc_table): Allow the rel parameter to be unused. * coffgen.c (make_a_section_from_file): Check the length of a section name before testing to see if it is a debug section name. (coff_object_p): Zero out any uninitialised bytes in the opt header. * ecoff.c (_bfd_ecoff_slurp_symbolic_info): Test for the raw source being empty when there are values to be processed. (_bfd_ecoff_slurp_symbol_table): Add range check. * mach-o.c (bfd_mach_o_canonicalize_one_reloc): Likewise. (bfd_mach_o_mangle_sections): Move test for too many sections to before the allocation of the section table. (bfd_mach_o_read_symtab_strtab): If the read fails, free the memory and nullify the symbol pointer. * reloc.c (bfd_generic_get_relocated_section_contents): Add handling of a bfd_reloc_notsupported return value. * versados.c (EDATA): Add range checking. (get_record): Likewise. (process_otr): Check for contents being available before updating them. (versados_canonicalize_reloc): Add range check.
Diffstat (limited to 'bfd/coff-we32k.c')
-rw-r--r--bfd/coff-we32k.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/bfd/coff-we32k.c b/bfd/coff-we32k.c
index d5481b8..b754815 100644
--- a/bfd/coff-we32k.c
+++ b/bfd/coff-we32k.c
@@ -53,14 +53,19 @@ static reloc_howto_type howto_table[] =
HOWTO(R_PCRLONG, 0, 2, 32, TRUE, 0, complain_overflow_signed, 0, "DISP32", TRUE, 0xffffffff,0xffffffff, FALSE),
};
+#define NUM_HOWTOS (sizeof (howto_table) / sizeof (howto_table[0]))
+
/* Turn a howto into a reloc nunmber */
#define SELECT_RELOC(x,howto) { x.r_type = howto->type; }
#define BADMAG(x) WE32KBADMAG(x)
#define WE32K 1
-#define RTYPE2HOWTO(cache_ptr, dst) \
- (cache_ptr)->howto = howto_table + (dst)->r_type;
+#define RTYPE2HOWTO(cache_ptr, dst) \
+ ((cache_ptr)->howto = \
+ ((dst)->r_type < NUM_HOWTOS \
+ ? howto_table + (dst)->r_type \
+ : NULL))
#ifndef bfd_pe_print_pdata
#define bfd_pe_print_pdata NULL