mirror of
https://github.com/tobast/libunwind-eh_elf.git
synced 2024-12-25 12:33:42 +01:00
Add test of backtracing using ARM-specific tables
Uses .ARM.exidx and .ARM.extbl sections to produce a backtrace. Signed-off-by: Ken Werner <ken.werner@linaro.org>
This commit is contained in:
parent
6a67154674
commit
4870386087
3 changed files with 107 additions and 0 deletions
1
.gitignore
vendored
1
.gitignore
vendored
|
@ -50,3 +50,4 @@ tests/test-strerror
|
|||
tests/test-proc-info
|
||||
tests/test-ptrace-misc
|
||||
tests/test-varargs
|
||||
tests/arm-extbl-test
|
||||
|
|
|
@ -46,6 +46,9 @@ endif #ARCH_IA64
|
|||
Ltest-nomalloc rs-race
|
||||
noinst_PROGRAMS_cdep = forker mapper test-ptrace-misc test-varargs \
|
||||
Gperf-simple Lperf-simple
|
||||
if ARCH_ARM
|
||||
check_PROGRAMS_arch = arm-extbl-test
|
||||
endif #ARCH_ARM
|
||||
|
||||
if SUPPORT_CXX_EXCEPTIONS
|
||||
check_PROGRAMS_cdep += Ltest-cxx-exceptions
|
||||
|
@ -72,6 +75,11 @@ TESTS = $(check_PROGRAMS) $(check_SCRIPTS)
|
|||
noinst_PROGRAMS = $(noinst_PROGRAMS_common) $(noinst_PROGRAMS_cdep) \
|
||||
$(noinst_PROGRAMS_arch)
|
||||
|
||||
arm_extbl_test_CPPFLAGS = -I$(top_srcdir)/src \
|
||||
-I$(top_srcdir)/include/tdep-$(arch) \
|
||||
-funwind-tables
|
||||
arm_extbl_test_LDFLAGS = -static
|
||||
|
||||
Lia64_test_readonly_SOURCES = Lia64-test-readonly.c ia64-test-readonly-asm.S
|
||||
Gia64_test_readonly_SOURCES = Gia64-test-readonly.c ia64-test-readonly-asm.S
|
||||
Lia64_test_stack_SOURCES = Lia64-test-stack.c ia64-test-stack-asm.S \
|
||||
|
@ -85,6 +93,7 @@ Gia64_test_nat_SOURCES = Gia64-test-nat.c ia64-test-nat-asm.S
|
|||
ia64_test_dyn1_SOURCES = ia64-test-dyn1.c ia64-dyn-asm.S flush-cache.S
|
||||
ppc64_test_altivec_SOURCES = ppc64-test-altivec.c ppc64-test-altivec-utils.c
|
||||
ppc64_test_wchar_SOURCES = ppc64-test-wchar.c
|
||||
arm_extbl_test_SOURCES = arm-extbl-test.c
|
||||
Gtest_init_SOURCES = Gtest-init.cxx
|
||||
Ltest_init_SOURCES = Ltest-init.cxx
|
||||
Ltest_cxx_exceptions_SOURCES = Ltest-cxx-exceptions.cxx
|
||||
|
@ -133,3 +142,5 @@ Lperf_simple_LDADD = $(LIBUNWIND_local)
|
|||
|
||||
test_setjmp_LDADD = $(LIBUNWIND_setjmp)
|
||||
ia64_test_setjmp_LDADD = $(LIBUNWIND_setjmp)
|
||||
|
||||
arm_extbl_test_LDADD = $(top_builddir)/src/libunwind-elf32.la $(LIBUNWIND)
|
||||
|
|
95
tests/arm-extbl-test.c
Normal file
95
tests/arm-extbl-test.c
Normal file
|
@ -0,0 +1,95 @@
|
|||
/* libunwind - a platform-independent unwind library
|
||||
Copyright 2011 Linaro Limited
|
||||
|
||||
This file is part of libunwind.
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining
|
||||
a copy of this software and associated documentation files (the
|
||||
"Software"), to deal in the Software without restriction, including
|
||||
without limitation the rights to use, copy, modify, merge, publish,
|
||||
distribute, sublicense, and/or sell copies of the Software, and to
|
||||
permit persons to whom the Software is furnished to do so, subject to
|
||||
the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be
|
||||
included in all copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
|
||||
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
||||
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
||||
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
||||
|
||||
#include "libunwind_i.h"
|
||||
|
||||
static int
|
||||
arm_exidx_unwind_frame (struct arm_stackframe *frame)
|
||||
{
|
||||
Debug (2, "frame: fp=%p, sp=%p, lr=%p, pc=%p\n",
|
||||
frame->fp, frame->sp, frame->lr, frame->pc);
|
||||
|
||||
struct arm_exidx_table *table = arm_exidx_table_find (frame->pc);
|
||||
if (NULL == table)
|
||||
return -1;
|
||||
|
||||
struct arm_exidx_entry *entry = arm_exidx_table_lookup (table, frame->pc);
|
||||
if (NULL == entry)
|
||||
return -1;
|
||||
|
||||
struct arm_exidx_vrs s;
|
||||
arm_exidx_frame_to_vrs(frame, &s);
|
||||
|
||||
uint8_t buf[32], n_buf = arm_exidx_extract (entry, buf);
|
||||
if (arm_exidx_decode (buf, n_buf, &arm_exidx_vrs_callback, &s) < 0)
|
||||
return -1;
|
||||
|
||||
return arm_exidx_vrs_to_frame(&s, frame);
|
||||
}
|
||||
|
||||
typedef void (*arm_exidx_backtrace_callback_t) (void *, struct arm_stackframe *);
|
||||
|
||||
static int
|
||||
arm_exidx_backtrace (arm_exidx_backtrace_callback_t cb)
|
||||
{
|
||||
register void *current_sp asm ("sp");
|
||||
struct arm_stackframe frame = {
|
||||
.fp = __builtin_frame_address (0),
|
||||
.sp = current_sp,
|
||||
.lr = __builtin_return_address (0),
|
||||
.pc = &arm_exidx_backtrace,
|
||||
};
|
||||
|
||||
while (1)
|
||||
{
|
||||
void *where = frame.pc;
|
||||
if (arm_exidx_unwind_frame (&frame) < 0)
|
||||
break;
|
||||
(*cb) (where, &frame);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void
|
||||
b (void *where, struct arm_stackframe *frame)
|
||||
{
|
||||
Debug (2, "%p -> %p (%p)\n", where, frame->pc, frame->sp - 4);
|
||||
}
|
||||
|
||||
static int
|
||||
a (int foo)
|
||||
{
|
||||
if (foo > 0)
|
||||
return a (foo - 1);
|
||||
arm_exidx_backtrace (&b);
|
||||
return foo;
|
||||
}
|
||||
|
||||
int
|
||||
main (int argc, char *argv[])
|
||||
{
|
||||
mi_init ();
|
||||
arm_exidx_init_local (argv[0]);
|
||||
return a (argc);
|
||||
}
|
Loading…
Reference in a new issue