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| -rw-r--r-- | gas/ChangeLog | 6 | ||||
| -rw-r--r-- | gas/config/tc-arm.c | 5 |
2 files changed, 11 insertions, 0 deletions
diff --git a/gas/ChangeLog b/gas/ChangeLog index e385881..9348a20 100644 --- a/gas/ChangeLog +++ b/gas/ChangeLog @@ -1,3 +1,9 @@ +2011-11-23 Thomas Klein <th.r.klein@web.de> + + * config/tc-arm.c (do_t_mov_cmp): Prevent emitting code for MOV + with two low register at arch v4t or v5t when assember using + unified syntax. + 2011-11-21 DJ Delorie <dj@redhat.com> * config/rl78-defs.h (rl78_error): Add "const". diff --git a/gas/config/tc-arm.c b/gas/config/tc-arm.c index e8040c3..bf44228 100644 --- a/gas/config/tc-arm.c +++ b/gas/config/tc-arm.c @@ -10913,6 +10913,11 @@ do_t_mov_cmp (void) switch (inst.instruction) { case T_MNEM_mov: + /* In v4t or v5t a move of two lowregs produces unpredictable + results. Don't allow this.*/ + constraint (low_regs && !ARM_CPU_HAS_FEATURE (selected_cpu, + arm_ext_v6),"MOV Rd, Rs with two low registers is not " + "permitted on this architecture"); inst.instruction = T_OPCODE_MOV_HR; inst.instruction |= (Rn & 0x8) << 4; inst.instruction |= (Rn & 0x7); |