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| author | Pedro Alves <palves@redhat.com> | 2011-03-18 18:42:41 +0000 |
|---|---|---|
| committer | Pedro Alves <palves@redhat.com> | 2011-03-18 18:42:41 +0000 |
| commit | 8dccd430c9de0e6cf747ae4bb1bf9d944fe3397c (patch) | |
| tree | f08c75005e0a84b4ea64218341df6caf2bca0799 /gdb/dwarf2loc.c | |
| parent | 0fdb4f184b39af02d76e21cd25af561b464f15a6 (diff) | |
| download | gdb-8dccd430c9de0e6cf747ae4bb1bf9d944fe3397c.zip gdb-8dccd430c9de0e6cf747ae4bb1bf9d944fe3397c.tar.gz gdb-8dccd430c9de0e6cf747ae4bb1bf9d944fe3397c.tar.bz2 | |
gdb/
* 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.
Diffstat (limited to 'gdb/dwarf2loc.c')
| -rw-r--r-- | gdb/dwarf2loc.c | 34 |
1 files changed, 30 insertions, 4 deletions
diff --git a/gdb/dwarf2loc.c b/gdb/dwarf2loc.c index f90ee71..285081e 100644 --- a/gdb/dwarf2loc.c +++ b/gdb/dwarf2loc.c @@ -591,8 +591,20 @@ read_pieced_value (struct value *v) if (gdb_regnum != -1) { - get_frame_register_bytes (frame, gdb_regnum, reg_offset, - this_size, buffer); + int optim, unavail; + + if (!get_frame_register_bytes (frame, gdb_regnum, reg_offset, + this_size, buffer, + &optim, &unavail)) + { + /* Just so garbage doesn't ever shine through. */ + memset (buffer, 0, this_size); + + if (optim) + set_value_optimized_out (v, 1); + if (unavail) + mark_value_bytes_unavailable (v, offset, this_size); + } } else { @@ -776,8 +788,22 @@ write_pieced_value (struct value *to, struct value *from) { if (need_bitwise) { - get_frame_register_bytes (frame, gdb_regnum, reg_offset, - this_size, buffer); + int optim, unavail; + + if (!get_frame_register_bytes (frame, gdb_regnum, reg_offset, + this_size, buffer, + &optim, &unavail)) + { + if (optim) + error (_("Can't do read-modify-write to " + "update bitfield; containing word has been " + "optimized out")); + if (unavail) + throw_error (NOT_AVAILABLE_ERROR, + _("Can't do read-modify-write to update " + "bitfield; containing word " + "is unavailable")); + } copy_bitwise (buffer, dest_offset_bits, contents, source_offset_bits, this_size_bits, |