FreeChainXenon/binutils-gdb
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* dwarf2loc.c (read_pieced_value): Handle get_frame_register_bytes
	returning that the register piece is unavailable/optimized out.
	(write_pieced_value): Handle get_frame_register_bytes returning
	that the register piece is unavailable/optimized out when doing a
	read-modify write of a bitfield.
	* findvar.c (value_from_register): Handle get_frame_register_bytes
	returning that the register piece is unavailable/optimized out.
	* frame.c (get_frame_register_bytes): New parameters `optimizedp'
	and `unavailablep'.  Throw error on bad debug info.  Use
	frame_register instead of frame_register_read, to fill in the new
	arguments.
	* frame.h (get_frame_register_bytes): New parameters `optimizedp'
	and `unavailablep'.
	* valops.c: (value_assign): Adjust, and handle
	get_frame_register_bytes failing.
	* spu-tdep.c: Include exceptions.h.
	(spu_software_single_step): Adjust, and handle
	get_frame_register_bytes failing.
	(spu_get_longjmp_target): Ditto.
	* gdbarch.sh (register_to_value): Change to return int.  New
	parameters `optimizedp' and `unavailablep'.
	* gdbarch.h, gdbarch.c: Regenerate.
	* i386-tdep.c (i386_register_to_value): Adjust to new
	gdbarch_register_to_value interface.
	* i387-tdep.c (i387_register_to_value): Ditto.
	* i387-tdep.h (i387_register_to_value): Ditto.
	* alpha-tdep.c (alpha_register_to_value): Ditto.
	* ia64-tdep.c (ia64_register_to_value): Ditto.
	* m68k-tdep.c (m68k_register_to_value): Ditto.
	* mips-tdep.c (mips_register_to_value): Ditto.
	* rs6000-tdep.c (rs6000_register_to_value): Ditto.
This commit is contained in:
Pedro Alves 2011-03-18 18:42:41 +00:00
parent 0fdb4f184b
commit 8dccd430c9
18 changed files with 241 additions and 72 deletions
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27
gdb/frame.c
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@ -1001,7 +1001,8 @@ frame_register_read (struct frame_info *frame, int regnum,
int
get_frame_register_bytes (struct frame_info *frame, int regnum,
CORE_ADDR offset, int len, gdb_byte *myaddr)
CORE_ADDR offset, int len, gdb_byte *myaddr,
int *optimizedp, int *unavailablep)
{
struct gdbarch *gdbarch = get_frame_arch (frame);
int i;
@ -1028,11 +1029,8 @@ get_frame_register_bytes (struct frame_info *frame, int regnum,
maxsize += thissize;
}
if (len > maxsize)
{
warning (_("Bad debug information detected: "
"Attempt to read %d bytes from registers."), len);
return 0;
}
error (_("Bad debug information detected: "
"Attempt to read %d bytes from registers."), len);
/* Copy the data. */
while (len > 0)
@ -1044,14 +1042,25 @@ get_frame_register_bytes (struct frame_info *frame, int regnum,
if (curr_len == register_size (gdbarch, regnum))
{
if (!frame_register_read (frame, regnum, myaddr))
enum lval_type lval;
CORE_ADDR addr;
int realnum;
frame_register (frame, regnum, optimizedp, unavailablep,
&lval, &addr, &realnum, myaddr);
if (*optimizedp || *unavailablep)
return 0;
}
else
{
gdb_byte buf[MAX_REGISTER_SIZE];
enum lval_type lval;
CORE_ADDR addr;
int realnum;
if (!frame_register_read (frame, regnum, buf))
frame_register (frame, regnum, optimizedp, unavailablep,
&lval, &addr, &realnum, buf);
if (*optimizedp || *unavailablep)
return 0;
memcpy (myaddr, buf + offset, curr_len);
}
@ -1062,6 +1071,8 @@ get_frame_register_bytes (struct frame_info *frame, int regnum,
regnum++;
}
*optimizedp = 0;
*unavailablep = 0;
return 1;
}