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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.
This commit is contained in:
Pedro Alves 2011-03-18 18:41:36 +00:00
parent e69aa73e27
commit 0fdb4f184b
8 changed files with 189 additions and 35 deletions
Download patch file Download diff file Expand all files Collapse all files

17
gdb/stack.c
View file

@ -1186,6 +1186,7 @@ frame_info (char *addr_exp, int from_tty)
{
enum lval_type lval;
int optimized;
int unavailable;
CORE_ADDR addr;
int realnum;
int count;
@ -1202,9 +1203,9 @@ frame_info (char *addr_exp, int from_tty)
/* Find out the location of the saved stack pointer with out
actually evaluating it. */
frame_register_unwind (fi, gdbarch_sp_regnum (gdbarch),
&optimized, &lval, &addr,
&optimized, &unavailable, &lval, &addr,
&realnum, NULL);
if (!optimized && lval == not_lval)
if (!optimized && !unavailable && lval == not_lval)
{
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
int sp_size = register_size (gdbarch, gdbarch_sp_regnum (gdbarch));
@ -1212,7 +1213,7 @@ frame_info (char *addr_exp, int from_tty)
CORE_ADDR sp;
frame_register_unwind (fi, gdbarch_sp_regnum (gdbarch),
&optimized, &lval, &addr,
&optimized, &unavailable, &lval, &addr,
&realnum, value);
/* NOTE: cagney/2003-05-22: This is assuming that the
stack pointer was packed as an unsigned integer. That
@ -1223,14 +1224,14 @@ frame_info (char *addr_exp, int from_tty)
printf_filtered ("\n");
need_nl = 0;
}
else if (!optimized && lval == lval_memory)
else if (!optimized && !unavailable && lval == lval_memory)
{
printf_filtered (" Previous frame's sp at ");
fputs_filtered (paddress (gdbarch, addr), gdb_stdout);
printf_filtered ("\n");
need_nl = 0;
}
else if (!optimized && lval == lval_register)
else if (!optimized && !unavailable && lval == lval_register)
{
printf_filtered (" Previous frame's sp in %s\n",
gdbarch_register_name (gdbarch, realnum));
@ -1248,11 +1249,11 @@ frame_info (char *addr_exp, int from_tty)
{
/* Find out the location of the saved register without
fetching the corresponding value. */
frame_register_unwind (fi, i, &optimized, &lval, &addr, &realnum,
NULL);
frame_register_unwind (fi, i, &optimized, &unavailable,
&lval, &addr, &realnum, NULL);
/* For moment, only display registers that were saved on the
stack. */
if (!optimized && lval == lval_memory)
if (!optimized && !unavailable && lval == lval_memory)
{
if (count == 0)
puts_filtered (" Saved registers:\n ");