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authorPedro Alves <palves@redhat.com>2011-03-18 18:41:36 +0000
committerPedro Alves <palves@redhat.com>2011-03-18 18:41:36 +0000
commit0fdb4f184b39af02d76e21cd25af561b464f15a6 (patch)
tree17616315af45c3550e9fbc428c82d55b620070bd /gdb/sentinel-frame.c
parente69aa73e27e67368cf501cc154db03809eb5445a (diff)
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* 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/sentinel-frame.c')
-rw-r--r--gdb/sentinel-frame.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/gdb/sentinel-frame.c b/gdb/sentinel-frame.c
index f68ea1c..e6000cc 100644
--- a/gdb/sentinel-frame.c
+++ b/gdb/sentinel-frame.c
@@ -61,7 +61,10 @@ sentinel_frame_prev_register (struct frame_info *this_frame,
/* Use the regcache_cooked_read() method so that it, on the fly,
constructs either a raw or pseudo register from the raw
register cache. */
- regcache_cooked_read (cache->regcache, regnum, value_contents_raw (value));
+ if (regcache_cooked_read (cache->regcache,
+ regnum,
+ value_contents_raw (value)) == REG_UNAVAILABLE)
+ mark_value_bytes_unavailable (value, 0, register_size (gdbarch, regnum));
return value;
}