diff options
| -rw-r--r-- | gdb/aarch64-tdep.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/gdb/aarch64-tdep.c b/gdb/aarch64-tdep.c index 8670197a88..f747ebda1a 100644 --- a/gdb/aarch64-tdep.c +++ b/gdb/aarch64-tdep.c @@ -340,6 +340,20 @@ aarch64_analyze_prologue (struct gdbarch *gdbarch, if (rn == AARCH64_SP_REGNUM && rd == AARCH64_FP_REGNUM) seen_stack_set = true; } + else if (inst.opcode->iclass == addsub_ext + && strcmp ("sub", inst.opcode->name) == 0) + { + unsigned rd = inst.operands[0].reg.regno; + unsigned rn = inst.operands[1].reg.regno; + unsigned rm = inst.operands[2].reg.regno; + + gdb_assert (aarch64_num_of_operands (inst.opcode) == 3); + gdb_assert (inst.operands[0].type == AARCH64_OPND_Rd_SP); + gdb_assert (inst.operands[1].type == AARCH64_OPND_Rn_SP); + gdb_assert (inst.operands[2].type == AARCH64_OPND_Rm_EXT); + + regs[rd] = pv_subtract (regs[rn], regs[rm]); + } else if (inst.opcode->iclass == pcreladdr && inst.operands[1].type == AARCH64_OPND_ADDR_ADRP) { @@ -370,14 +384,20 @@ aarch64_analyze_prologue (struct gdbarch *gdbarch, } else if (inst.opcode->op == OP_MOVZ) { + unsigned rd = inst.operands[0].reg.regno; + + gdb_assert (aarch64_num_of_operands (inst.opcode) == 2); gdb_assert (inst.operands[0].type == AARCH64_OPND_Rd); + gdb_assert (inst.operands[1].type == AARCH64_OPND_HALF); + gdb_assert (inst.operands[1].shifter.kind == AARCH64_MOD_LSL); /* If this shows up before we set the stack, keep going. Otherwise stop the analysis. */ if (seen_stack_set) break; - regs[inst.operands[0].reg.regno] = pv_unknown (); + regs[rd] = pv_constant (inst.operands[1].imm.value + << inst.operands[1].shifter.amount); } else if (inst.opcode->iclass == log_shift && strcmp (inst.opcode->name, "orr") == 0) |