diff options
Diffstat (limited to 'gas/config/tc-arm.c')
| -rw-r--r-- | gas/config/tc-arm.c | 52 |
1 files changed, 39 insertions, 13 deletions
diff --git a/gas/config/tc-arm.c b/gas/config/tc-arm.c index 1bfe5b3..fe9d775 100644 --- a/gas/config/tc-arm.c +++ b/gas/config/tc-arm.c @@ -8186,13 +8186,13 @@ do_t_add_sub (void) narrow = (current_it_mask != 0); if (!inst.operands[2].isreg) { + int add; + + add = (inst.instruction == T_MNEM_add + || inst.instruction == T_MNEM_adds); opcode = 0; if (inst.size_req != 4) { - int add; - - add = (inst.instruction == T_MNEM_add - || inst.instruction == T_MNEM_adds); /* Attempt to use a narrow opcode, with relaxation if appropriate. */ if (Rd == REG_SP && Rs == REG_SP && !flags) @@ -8222,12 +8222,24 @@ do_t_add_sub (void) if (inst.size_req == 4 || (inst.size_req != 2 && !opcode)) { - /* ??? Convert large immediates to addw/subw. */ - inst.instruction = THUMB_OP32 (inst.instruction); - inst.instruction = (inst.instruction & 0xe1ffffff) | 0x10000000; + if (Rs == REG_PC) + { + /* Always use addw/subw. */ + inst.instruction = add ? 0xf20f0000 : 0xf2af0000; + inst.reloc.type = BFD_RELOC_ARM_T32_IMM12; + } + else + { + inst.instruction = THUMB_OP32 (inst.instruction); + inst.instruction = (inst.instruction & 0xe1ffffff) + | 0x10000000; + if (flags) + inst.reloc.type = BFD_RELOC_ARM_T32_IMMEDIATE; + else + inst.reloc.type = BFD_RELOC_ARM_T32_ADD_IMM; + } inst.instruction |= inst.operands[0].reg << 8; inst.instruction |= inst.operands[1].reg << 16; - inst.reloc.type = BFD_RELOC_ARM_T32_IMMEDIATE; } } else @@ -16136,7 +16148,10 @@ md_convert_frag (bfd *abfd, segT asec ATTRIBUTE_UNUSED, fragS *fragp) insn = THUMB_OP32 (opcode); insn |= (old_op & 0xf0) << 4; put_thumb32_insn (buf, insn); - reloc_type = BFD_RELOC_ARM_T32_IMMEDIATE; + if (opcode == T_MNEM_add_pc) + reloc_type = BFD_RELOC_ARM_T32_IMM12; + else + reloc_type = BFD_RELOC_ARM_T32_ADD_IMM; } else reloc_type = BFD_RELOC_ARM_THUMB_ADD; @@ -16153,7 +16168,10 @@ md_convert_frag (bfd *abfd, segT asec ATTRIBUTE_UNUSED, fragS *fragp) insn |= (old_op & 0xf0) << 4; insn |= (old_op & 0xf) << 16; put_thumb32_insn (buf, insn); - reloc_type = BFD_RELOC_ARM_T32_IMMEDIATE; + if (insn & (1 << 20)) + reloc_type = BFD_RELOC_ARM_T32_ADD_IMM; + else + reloc_type = BFD_RELOC_ARM_T32_IMMEDIATE; } else reloc_type = BFD_RELOC_ARM_THUMB_ADD; @@ -17561,6 +17579,7 @@ md_apply_fix (fixS * fixP, break; case BFD_RELOC_ARM_T32_IMMEDIATE: + case BFD_RELOC_ARM_T32_ADD_IMM: case BFD_RELOC_ARM_T32_IMM12: case BFD_RELOC_ARM_T32_ADD_PC12: /* We claim that this fixup has been processed here, @@ -17581,15 +17600,21 @@ md_apply_fix (fixS * fixP, newval <<= 16; newval |= md_chars_to_number (buf+2, THUMB_SIZE); - /* FUTURE: Implement analogue of negate_data_op for T32. */ - if (fixP->fx_r_type == BFD_RELOC_ARM_T32_IMMEDIATE) + newimm = FAIL; + if (fixP->fx_r_type == BFD_RELOC_ARM_T32_IMMEDIATE + || fixP->fx_r_type == BFD_RELOC_ARM_T32_ADD_IMM) { newimm = encode_thumb32_immediate (value); if (newimm == (unsigned int) FAIL) newimm = thumb32_negate_data_op (&newval, value); } - else + if (fixP->fx_r_type != BFD_RELOC_ARM_T32_IMMEDIATE + && newimm == (unsigned int) FAIL) { + /* Turn add/sum into addw/subw. */ + if (fixP->fx_r_type == BFD_RELOC_ARM_T32_ADD_IMM) + newval = (newval & 0xfeffffff) | 0x02000000; + /* 12 bit immediate for addw/subw. */ if (value < 0) { @@ -18608,6 +18633,7 @@ arm_force_relocation (struct fix * fixp) if (fixp->fx_r_type == BFD_RELOC_ARM_IMMEDIATE || fixp->fx_r_type == BFD_RELOC_ARM_OFFSET_IMM || fixp->fx_r_type == BFD_RELOC_ARM_ADRL_IMMEDIATE + || fixp->fx_r_type == BFD_RELOC_ARM_T32_ADD_IMM || fixp->fx_r_type == BFD_RELOC_ARM_T32_IMMEDIATE || fixp->fx_r_type == BFD_RELOC_ARM_T32_IMM12 || fixp->fx_r_type == BFD_RELOC_ARM_T32_ADD_PC12) |