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Handle media instructions in arm software single step.

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This patch fixes PR 18605 which is about incorrectly decoding media
instructions in software single step.

gdb:

2015-06-30  Yao Qi  <yao.qi@linaro.org>

	PR tdep/18605
	* arm-tdep.c (arm_get_next_pc_raw): Break for media
	instructions.
This commit is contained in:
Yao Qi 2015-06-30 09:24:43 +01:00
parent fd6e021d8c
commit 7b9be803fe
2 changed files with 13 additions and 0 deletions
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6
gdb/ChangeLog
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@ -1,3 +1,9 @@
2015-06-30 Yao Qi <yao.qi@linaro.org>
PR tdep/18605
* arm-tdep.c (arm_get_next_pc_raw): Break for media
instructions.
2015-06-29 Kevin Buettner <kevinb@redhat.com> 2015-06-29 Kevin Buettner <kevinb@redhat.com>
* rx-tdep.c (RX_PSW_REGNUM): New enum constant. * rx-tdep.c (RX_PSW_REGNUM): New enum constant.

7
gdb/arm-tdep.c
View file

@ -4927,6 +4927,13 @@ arm_get_next_pc_raw (struct frame_info *frame, CORE_ADDR pc)
case 0x5: /* data transfer */ case 0x5: /* data transfer */
case 0x6: case 0x6:
case 0x7: case 0x7:
if (bits (this_instr, 25, 27) == 0x3 && bit (this_instr, 4) == 1)
{
/* Media instructions and architecturally undefined
instructions. */
break;
}
if (bit (this_instr, 20)) if (bit (this_instr, 20))
{ {
/* load */ /* load */