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| author | Alan Modra <amodra@gmail.com> | 2019-12-11 13:32:25 +1030 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2019-12-11 21:14:19 +1030 |
| commit | 13c9c48599ebc8ad2f3a1fb9f672740219cd3841 (patch) | |
| tree | b304237be09f4f06469122cdcdda658299ebb1ba /bfd/elf32-arm.c | |
| parent | 09c78487342254de6a4498f8b3aa1f3f1d508898 (diff) | |
| download | gdb-13c9c48599ebc8ad2f3a1fb9f672740219cd3841.zip gdb-13c9c48599ebc8ad2f3a1fb9f672740219cd3841.tar.gz gdb-13c9c48599ebc8ad2f3a1fb9f672740219cd3841.tar.bz2 | |
bfd signed overflow fixes
Aimed at quietening ubsan.
include/
* opcode/mmix.h (PUSHGO_INSN_BYTE): Make unsigned.
(GO_INSN_BYTE, SETL_INSN_BYTE, INCML_INSN_BYTE, INCMH_INSN_BYTE),
(INCH_INSN_BYTE, SWYM_INSN_BYTE, JMP_INSN_BYTE): Likewise.
bfd/
* elf32-rx.c (elf32_rx_relax_section): Avoid signed overflow.
* libaout.h (N_SET_INFO, N_SET_FLAGS): Likewise.
* netbsd.h (write_object_contents): Likewise.
* elf32-arm.c (bfd_elf32_arm_vfp11_erratum_scan): Likewise.
* libhppa.h (HPPA_R_CONSTANT): Don't signed extend with shifts.
(stm32l4xx_create_replacing_stub_vldm): Don't truncate high bits
with shifts.
* elf32-nds32.h (R_NDS32_RELAX_ENTRY_DISABLE_RELAX_FLAG): Define
using 1u shifted left. Ditto for other macros.
* mmo.c (LOP): Make unsigned.
Diffstat (limited to 'bfd/elf32-arm.c')
| -rw-r--r-- | bfd/elf32-arm.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/bfd/elf32-arm.c b/bfd/elf32-arm.c index 37b5b64..ebe199c 100644 --- a/bfd/elf32-arm.c +++ b/bfd/elf32-arm.c @@ -8506,14 +8506,14 @@ bfd_elf32_arm_vfp11_erratum_scan (bfd *abfd, struct bfd_link_info *link_info) { unsigned int next_i = i + 4; unsigned int insn = bfd_big_endian (abfd) - ? (contents[i] << 24) - | (contents[i + 1] << 16) - | (contents[i + 2] << 8) - | contents[i + 3] - : (contents[i + 3] << 24) - | (contents[i + 2] << 16) - | (contents[i + 1] << 8) - | contents[i]; + ? (((unsigned) contents[i] << 24) + | (contents[i + 1] << 16) + | (contents[i + 2] << 8) + | contents[i + 3]) + : (((unsigned) contents[i + 3] << 24) + | (contents[i + 2] << 16) + | (contents[i + 1] << 8) + | contents[i]); unsigned int writemask = 0; enum bfd_arm_vfp11_pipe vpipe; @@ -19356,7 +19356,7 @@ stm32l4xx_create_replacing_stub_vldm (struct elf32_arm_link_hash_table * htab, const bfd_byte *const initial_insn_addr, bfd_byte *const base_stub_contents) { - int num_words = ((unsigned int) initial_insn << 24) >> 24; + int num_words = initial_insn & 0xff; bfd_byte *current_stub_contents = base_stub_contents; BFD_ASSERT (is_thumb2_vldm (initial_insn)); |