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| author | Kyle Huey <me@kylehuey.com> | 2015-05-28 09:12:12 +0100 |
|---|---|---|
| committer | Yao Qi <yao.qi@linaro.org> | 2015-05-28 09:15:35 +0100 |
| commit | d403db2720ef6ac091dd1c0101ffc60242199528 (patch) | |
| tree | 19dd36cbb3d4ec22365ef3d70f23c5ebdec00e28 | |
| parent | 124b4f8708f534e44787d7edf22d214d2ec225be (diff) | |
| download | gdb-d403db2720ef6ac091dd1c0101ffc60242199528.zip gdb-d403db2720ef6ac091dd1c0101ffc60242199528.tar.gz gdb-d403db2720ef6ac091dd1c0101ffc60242199528.tar.bz2 | |
Do arm_abi detection for ELFOSABI_GNU binaries
On ARM systems, gdb must determine which style of breakpoint to use
(see the comments at the beginning of gdb/arm-linux-tdep.c). In
arm_gdbarch_init we only attempt to extract the eabi version from the
ELF binary if it is a ELFOSABI_NONE binary. If the binary is
ELFOSABI_GNU instead, we end up defaulting to the old style OABI
syscall breakpoint instruction. On a Linux kernel built without
CONFIG_OABI_COMPAT, this triggers a SIGILL in ld when attempting to
execute any ELFOSABI_GNU program.
(e.g. https://github.com/raspberrypi/linux/issues/766)
gdb/
2015-05-28 Kyle Huey <me@kylehuey.com> (tiny patch)
* gdb/arm-tdep.c (arm_gdbarch_init): Perform arm_abi detection on
ELFOSABI_GNU binaries.
| -rw-r--r-- | gdb/ChangeLog | 5 | ||||
| -rw-r--r-- | gdb/arm-tdep.c | 2 |
2 files changed, 6 insertions, 1 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 971187f..a75d3bb 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,8 @@ +2015-05-28 Kyle Huey <me@kylehuey.com> (tiny patch) + + * gdb/arm-tdep.c (arm_gdbarch_init): Perform arm_abi detection on + ELFOSABI_GNU binaries. + 2015-05-27 Doug Evans <dje@google.com> * dwarf2read.c (lnp_state_machine): New typedef. diff --git a/gdb/arm-tdep.c b/gdb/arm-tdep.c index 638855b..750749d 100644 --- a/gdb/arm-tdep.c +++ b/gdb/arm-tdep.c @@ -9950,7 +9950,7 @@ arm_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) anyway, so assume APCS. */ arm_abi = ARM_ABI_APCS; } - else if (ei_osabi == ELFOSABI_NONE) + else if (ei_osabi == ELFOSABI_NONE || ei_osabi == ELFOSABI_GNU) { int eabi_ver = EF_ARM_EABI_VERSION (e_flags); int attr_arch, attr_profile; |