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Skip 'bx reg' on arm-linux

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In arm-tdep.c, arm_skip_stub is installed to gdbarch
skip_trampoline_code, but in arm-linux-tdep.c,
find_solib_trampoline_target is installed to skip_trampoline_code.
That means gdb configured for arm-linux target doesn't recognize some
arm specific trampolines or stubs.  Beside handling generic solib
trampoline, gdb for arm-linux target should be able to handle arm
specific trampolines.  This patch is to skip arm specific stubs, if
any, and as a fallback, skip the generic solib trampoline.

gdb:

2014-06-24  Yao Qi  <yao@codesourcery.com>

	* arm-linux-tdep.c (arm_linux_skip_trampoline_code): New.
	(arm_linux_init_abi): Set skip_trampoline_code with
	gdbarch_skip_trampoline_code instead of
	find_solib_trampoline_target.
This commit is contained in:
Yao Qi 2014-05-30 16:08:10 +08:00
parent 18d18ac810
commit 3343ef8687
2 changed files with 21 additions and 1 deletions
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7
gdb/ChangeLog
View file

@ -1,3 +1,10 @@
2014-06-24 Yao Qi <yao@codesourcery.com>
* arm-linux-tdep.c (arm_linux_skip_trampoline_code): New.
(arm_linux_init_abi): Set skip_trampoline_code with
gdbarch_skip_trampoline_code instead of
find_solib_trampoline_target.
2014-06-24 Yao Qi <yao@codesourcery.com>
* arm-tdep.c (arm_stub_unwind_sniffer): Return 1 if

15
gdb/arm-linux-tdep.c
View file

@ -1322,6 +1322,19 @@ arm_linux_syscall_record (struct regcache *regcache, unsigned long svc_number)
return 0;
}
/* Implement the skip_trampoline_code gdbarch method. */
static CORE_ADDR
arm_linux_skip_trampoline_code (struct frame_info *frame, CORE_ADDR pc)
{
CORE_ADDR target_pc = arm_skip_stub (frame, pc);
if (target_pc != 0)
return target_pc;
return find_solib_trampoline_target (frame, pc);
}
static void
arm_linux_init_abi (struct gdbarch_info info,
struct gdbarch *gdbarch)
@ -1387,7 +1400,7 @@ arm_linux_init_abi (struct gdbarch_info info,
set_gdbarch_software_single_step (gdbarch, arm_linux_software_single_step);
/* Shared library handling. */
set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target);
set_gdbarch_skip_trampoline_code (gdbarch, arm_linux_skip_trampoline_code);
set_gdbarch_skip_solib_resolver (gdbarch, glibc_skip_solib_resolver);
/* Enable TLS support. */