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| author | Pedro Alves <palves@redhat.com> | 2011-03-18 18:41:36 +0000 |
|---|---|---|
| committer | Pedro Alves <palves@redhat.com> | 2011-03-18 18:41:36 +0000 |
| commit | 0fdb4f184b39af02d76e21cd25af561b464f15a6 (patch) | |
| tree | 17616315af45c3550e9fbc428c82d55b620070bd /gdb/findvar.c | |
| parent | e69aa73e27e67368cf501cc154db03809eb5445a (diff) | |
| download | gdb-0fdb4f184b39af02d76e21cd25af561b464f15a6.zip gdb-0fdb4f184b39af02d76e21cd25af561b464f15a6.tar.gz gdb-0fdb4f184b39af02d76e21cd25af561b464f15a6.tar.bz2 | |
gdb/
* findvar.c (value_of_register): Mark the value as unavailable, if
the register is unavailable.
* frame.h (frame_register_unwind): New `unavailablep' parameter.
(frame_register): New `unavailablep' parameter.
(frame_register_read): Update comment.
* frame.c (frame_register_unwind): New `unavailablep' parameter.
Set it if the register is unavailable. If the register is
unavailable, clear the output buffer.
(frame_register): New `unavailablep' parameter. Pass it down.
(frame_unwind_register): Adjust.
(put_frame_register): Adjust.
(frame_register_read): Adjust. Also return false if the register
is not available.
(frame_register_unwind_location): Adjust.
* sentinel-frame.c (sentinel_frame_prev_register): If the register
is unavailable, mark the value accordingly.
* stack.c (frame_info): Handle unavailable registers.
gdb/testsuite/
* gdb.trace/unavailable.exp (fpreg, spreg, pcreg): Define.
(test_register, test_register_unavailable): New procedures.
(gdb_unavailable_registers_test): New procedure.
(gdb_trace_collection_test): Call it.
Diffstat (limited to 'gdb/findvar.c')
| -rw-r--r-- | gdb/findvar.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/gdb/findvar.c b/gdb/findvar.c index 6463342..809a99e 100644 --- a/gdb/findvar.c +++ b/gdb/findvar.c @@ -265,6 +265,7 @@ value_of_register (int regnum, struct frame_info *frame) struct gdbarch *gdbarch = get_frame_arch (frame); CORE_ADDR addr; int optim; + int unavail; struct value *reg_val; int realnum; gdb_byte raw_buffer[MAX_REGISTER_SIZE]; @@ -276,16 +277,24 @@ value_of_register (int regnum, struct frame_info *frame) + gdbarch_num_pseudo_regs (gdbarch)) return value_of_user_reg (regnum, frame); - frame_register (frame, regnum, &optim, &lval, &addr, &realnum, raw_buffer); + frame_register (frame, regnum, &optim, &unavail, + &lval, &addr, &realnum, raw_buffer); reg_val = allocate_value (register_type (gdbarch, regnum)); - memcpy (value_contents_raw (reg_val), raw_buffer, - register_size (gdbarch, regnum)); + if (!optim && !unavail) + memcpy (value_contents_raw (reg_val), raw_buffer, + register_size (gdbarch, regnum)); + else + memset (value_contents_raw (reg_val), 0, + register_size (gdbarch, regnum)); + VALUE_LVAL (reg_val) = lval; set_value_address (reg_val, addr); VALUE_REGNUM (reg_val) = regnum; set_value_optimized_out (reg_val, optim); + if (unavail) + mark_value_bytes_unavailable (reg_val, 0, register_size (gdbarch, regnum)); VALUE_FRAME_ID (reg_val) = get_frame_id (frame); return reg_val; } |