diff options
| author | Nick Clifton <nickc@redhat.com> | 2011-06-30 13:42:46 +0000 |
|---|---|---|
| committer | Nick Clifton <nickc@redhat.com> | 2011-06-30 13:42:46 +0000 |
| commit | 5f4cb1986d38875f7541b53e41ae7fb1e7460f14 (patch) | |
| tree | e8a4257e783817c6b4ee9578b7b3d04a3bfdcf9d /gas/config/tc-arm.c | |
| parent | 68246214dfc90b41caecb381289368dbecfcafbe (diff) | |
| download | gdb-5f4cb1986d38875f7541b53e41ae7fb1e7460f14.zip gdb-5f4cb1986d38875f7541b53e41ae7fb1e7460f14.tar.gz gdb-5f4cb1986d38875f7541b53e41ae7fb1e7460f14.tar.bz2 | |
* gas/arm/addthumb2err.s: New test file.
* gas/arm/addthumb2err.d: Test control file.
* gas/arm/addthumb2err.l: Expected error messages.
* config/tc-arm.c (do_t_add_sub): Only allow LSL shifts of less
than 4 in Thumb mode.
Diffstat (limited to 'gas/config/tc-arm.c')
| -rw-r--r-- | gas/config/tc-arm.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gas/config/tc-arm.c b/gas/config/tc-arm.c index fca5483..1592322 100644 --- a/gas/config/tc-arm.c +++ b/gas/config/tc-arm.c @@ -9474,6 +9474,9 @@ do_t_add_sub (void) } else { + unsigned int value = inst.reloc.exp.X_add_number; + unsigned int shift = inst.operands[2].shift_kind; + Rn = inst.operands[2].reg; /* See if we can do this with a 16-bit instruction. */ if (!inst.operands[2].shifted && inst.size_req != 4) @@ -9524,6 +9527,10 @@ do_t_add_sub (void) inst.instruction = THUMB_OP32 (inst.instruction); inst.instruction |= Rd << 8; inst.instruction |= Rs << 16; + constraint (Rd == REG_SP && Rs == REG_SP && value > 3, + _("shift value over 3 not allowed in thumb mode")); + constraint (Rd == REG_SP && Rs == REG_SP && shift != SHIFT_LSL, + _("only LSL shift allowed in thumb mode")); encode_thumb32_shifted_operand (2); } } |