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* mips-tdep.c (mips_pseudo_register_write): Sign extend 32-bit

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cooked values that are being transferred to 64-bit raw registers.
	(mips_pseudo_register_read): Revise to preserve symmetry with
	mips_pseudo_register_write().
This commit is contained in:
Kevin Buettner 2010-12-15 20:53:08 +00:00
parent 45ccdddcbf
commit 8bdf35dcae
2 changed files with 23 additions and 6 deletions
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7
gdb/ChangeLog
View File

@ -1,3 +1,10 @@
2010-12-15 Kevin Buettner <kevinb@redhat.com>
* mips-tdep.c (mips_pseudo_register_write): Sign extend 32-bit
cooked values that are being transferred to 64-bit raw registers.
(mips_pseudo_register_read): Revise to preserve symmetry with
mips_pseudo_register_write().
2010-12-15 Greg Watson <g.watson@computer.org>
* f-exp.y (yylex): Check entire token against keywords.

22
gdb/mips-tdep.c
View File

@ -559,11 +559,15 @@ mips_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache,
else if (register_size (gdbarch, rawnum) >
register_size (gdbarch, cookednum))
{
if (gdbarch_tdep (gdbarch)->mips64_transfers_32bit_regs_p
|| gdbarch_byte_order (gdbarch) == BFD_ENDIAN_LITTLE)
if (gdbarch_tdep (gdbarch)->mips64_transfers_32bit_regs_p)
regcache_raw_read_part (regcache, rawnum, 0, 4, buf);
else
regcache_raw_read_part (regcache, rawnum, 4, 4, buf);
{
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
LONGEST regval;
regcache_raw_read_signed (regcache, rawnum, &regval);
store_signed_integer (buf, 4, byte_order, regval);
}
}
else
internal_error (__FILE__, __LINE__, _("bad register size"));
@ -582,11 +586,17 @@ mips_pseudo_register_write (struct gdbarch *gdbarch,
else if (register_size (gdbarch, rawnum) >
register_size (gdbarch, cookednum))
{
if (gdbarch_tdep (gdbarch)->mips64_transfers_32bit_regs_p
|| gdbarch_byte_order (gdbarch) == BFD_ENDIAN_LITTLE)
if (gdbarch_tdep (gdbarch)->mips64_transfers_32bit_regs_p)
regcache_raw_write_part (regcache, rawnum, 0, 4, buf);
else
regcache_raw_write_part (regcache, rawnum, 4, 4, buf);
{
/* Sign extend the shortened version of the register prior
to placing it in the raw register. This is required for
some mips64 parts in order to avoid unpredictable behavior. */
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
LONGEST regval = extract_signed_integer (buf, 4, byte_order);
regcache_raw_write_signed (regcache, rawnum, regval);
}
}
else
internal_error (__FILE__, __LINE__, _("bad register size"));