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| author | Nick Clifton <nickc@redhat.com> | 2009-12-09 08:38:04 +0000 |
|---|---|---|
| committer | Nick Clifton <nickc@redhat.com> | 2009-12-09 08:38:04 +0000 |
| commit | 07a28fab1145a0c0fa124b737d3956fbe5c43e5e (patch) | |
| tree | d67c81bf9528f373e64edd395fb63874347e6924 | |
| parent | 8d099ae953697a81dd49fa135b72e731de2a8f70 (diff) | |
| download | gdb-07a28fab1145a0c0fa124b737d3956fbe5c43e5e.zip gdb-07a28fab1145a0c0fa124b737d3956fbe5c43e5e.tar.gz gdb-07a28fab1145a0c0fa124b737d3956fbe5c43e5e.tar.bz2 | |
PR 10924
* arm-dis.c (print_insn_arm): Mark insns that use the PC in
post-indexed addressing as unpredictable.
| -rw-r--r-- | opcodes/ChangeLog | 6 | ||||
| -rw-r--r-- | opcodes/arm-dis.c | 16 |
2 files changed, 17 insertions, 5 deletions
diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog index 7ecb512..9e2dfbd 100644 --- a/opcodes/ChangeLog +++ b/opcodes/ChangeLog @@ -1,3 +1,9 @@ +2009-12-09 Nick Clifton <nickc@redhat.com> + + PR 10924 + * arm-dis.c (print_insn_arm): Mark insns that use the PC in + post-indexed addressing as unpredictable. + 2009-12-03 H.J. Lu <hongjiu.lu@intel.com> * i386-dis.c (FXSAVE_Fixup): New. diff --git a/opcodes/arm-dis.c b/opcodes/arm-dis.c index a871d23..3bfad52 100644 --- a/opcodes/arm-dis.c +++ b/opcodes/arm-dis.c @@ -2931,11 +2931,17 @@ print_insn_arm (bfd_vma pc, struct disassemble_info *info, long given) NEGATIVE_BIT_SET ? "-" : "", arm_regnames[given & 0xf]); - /* Writeback is automatically implied by post- addressing. - Setting the W bit is unnecessary and ARM specify it as - being unpredictable. */ - if (WRITEBACK_BIT_SET && ! allow_unpredictable) - func (stream, UNPREDICTABLE_INSTRUCTION); + if (! allow_unpredictable) + { + /* Writeback is automatically implied by post- addressing. + Setting the W bit is unnecessary and ARM specify it as + being unpredictable. */ + if (WRITEBACK_BIT_SET + /* Specifying the PC register as the post-indexed + registers is also unpredictable. */ + || ((given & 0xf) == 0xf)) + func (stream, UNPREDICTABLE_INSTRUCTION); + } } } break; |