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| author | Stan Shebs <shebs@codesourcery.com> | 2011-09-27 13:09:37 +0000 |
|---|---|---|
| committer | Stan Shebs <shebs@codesourcery.com> | 2011-09-27 13:09:37 +0000 |
| commit | 6710bf39b7c037de481a4b351fb69cec6b48b138 (patch) | |
| tree | 49c698293333f96658a7f2859051a433cdf21d7f /gdb/i386-tdep.c | |
| parent | 21eb9156ec61765732abe5e2b8b0e717452bf7f1 (diff) | |
| download | gdb-6710bf39b7c037de481a4b351fb69cec6b48b138.zip gdb-6710bf39b7c037de481a4b351fb69cec6b48b138.tar.gz gdb-6710bf39b7c037de481a4b351fb69cec6b48b138.tar.bz2 | |
Add return address collection for tracepoints.
* tracepoint.c (encode_actions_1): Add case for $_ret.
(validate_actionline): Check for $_ret.
(trace_dump_actions): Ditto.
* ax-gdb.h (gen_trace_for_return_address): Declare.
* ax-gdb.c: Include arch-utils.h.
(gen_trace_for_return_address): New function.
(agent_command): Add return address special case.
* amd64-tdep.c: Include ax.h and ax-gdb.h.
(amd64_gen_return_address): New function.
(amd64_init_abi): Call it.
* i386-tdep.c: Include ax.h and ax-gdb.h.
(i386_gen_return_address): New function.
(i386_init_abi): Call it.
* arch-utils.h (default_gen_return_address): Declare.
* arch-utils.c (default_gen_return_address): New function.
* gdbarch.sh (gen_return_address): New method.
* gdbarch.h, gdbarch.c: Regenerate.
* gdb.texinfo (Tracepoint Action Lists): Document $_ret.
* gdb.trace/collection.exp: Test collection of $_ret.
Diffstat (limited to 'gdb/i386-tdep.c')
| -rw-r--r-- | gdb/i386-tdep.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/gdb/i386-tdep.c b/gdb/i386-tdep.c index 98dfd02..179bc45 100644 --- a/gdb/i386-tdep.c +++ b/gdb/i386-tdep.c @@ -60,6 +60,9 @@ #include "features/i386/i386-avx.c" #include "features/i386/i386-mmx.c" +#include "ax.h" +#include "ax-gdb.h" + /* Register names. */ static const char *i386_register_names[] = @@ -2074,6 +2077,22 @@ static const struct frame_unwind i386_stack_tramp_frame_unwind = i386_stack_tramp_frame_sniffer }; +/* Generate a bytecode expression to get the value of the saved PC. */ + +static void +i386_gen_return_address (struct gdbarch *gdbarch, + struct agent_expr *ax, struct axs_value *value, + CORE_ADDR scope) +{ + /* The following sequence assumes the traditional use of the base + register. */ + ax_reg (ax, I386_EBP_REGNUM); + ax_const_l (ax, 4); + ax_simple (ax, aop_add); + value->type = register_type (gdbarch, I386_EIP_REGNUM); + value->kind = axs_lvalue_memory; +} + /* Signal trampolines. */ @@ -7410,6 +7429,8 @@ i386_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) set_gdbarch_relocate_instruction (gdbarch, i386_relocate_instruction); + set_gdbarch_gen_return_address (gdbarch, i386_gen_return_address); + /* Hook in ABI-specific overrides, if they have been registered. */ info.tdep_info = (void *) tdesc_data; gdbarch_init_osabi (info, gdbarch); |