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* arm-tdep.c (thumb_get_next_pc_raw): Handle Thumb-16 encoding

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for "mov pc, REG" as well.
	(thumb_instruction_changes_pc): Likewise.
This commit is contained in:
Ulrich Weigand
2010-10-19 21:30:54 +00:00
parent 8e6a5956eb
commit ad8b5167d7
2 changed files with 18 additions and 0 deletions
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6
gdb/ChangeLog
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@@ -1,3 +1,9 @@
2010-10-19 Ulrich Weigand <uweigand@de.ibm.com>
* arm-tdep.c (thumb_get_next_pc_raw): Handle Thumb-16 encoding
for "mov pc, REG" as well.
(thumb_instruction_changes_pc): Likewise.
2010-10-19 Sami Wagiaalla <swagiaal@redhat.com> 2010-10-19 Sami Wagiaalla <swagiaal@redhat.com>
PR C++/11500: PR C++/11500:

12
gdb/arm-tdep.c
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@@ -537,6 +537,9 @@ thumb_instruction_changes_pc (unsigned short inst)
if ((inst & 0xff00) == 0x4700) /* bx REG, blx REG */ if ((inst & 0xff00) == 0x4700) /* bx REG, blx REG */
return 1; return 1;
if ((inst & 0xff87) == 0x4687) /* mov pc, REG */
return 1;
if ((inst & 0xf500) == 0xb100) /* CBNZ or CBZ. */ if ((inst & 0xf500) == 0xb100) /* CBNZ or CBZ. */
return 1; return 1;
@@ -3572,6 +3575,15 @@ thumb_get_next_pc_raw (struct frame_info *frame, CORE_ADDR pc, int insert_bkpt)
else else
nextpc = get_frame_register_unsigned (frame, bits (inst1, 3, 6)); nextpc = get_frame_register_unsigned (frame, bits (inst1, 3, 6));
} }
else if ((inst1 & 0xff87) == 0x4687) /* mov pc, REG */
{
if (bits (inst1, 3, 6) == 0x0f)
nextpc = pc_val;
else
nextpc = get_frame_register_unsigned (frame, bits (inst1, 3, 6));
nextpc = MAKE_THUMB_ADDR (nextpc);
}
else if ((inst1 & 0xf500) == 0xb100) else if ((inst1 & 0xf500) == 0xb100)
{ {
/* CBNZ or CBZ. */ /* CBNZ or CBZ. */