diff options
Diffstat (limited to 'target-arm/translate.c')
| -rw-r--r-- | target-arm/translate.c | 44 |
1 files changed, 24 insertions, 20 deletions
diff --git a/target-arm/translate.c b/target-arm/translate.c index 3a41ca2..21070f1 100644 --- a/target-arm/translate.c +++ b/target-arm/translate.c @@ -3415,8 +3415,8 @@ static uint32_t msr_mask(CPUState *env, DisasContext *s, int flags, int spsr) { return mask; } -/* Returns nonzero if access to the PSR is not permitted. */ -static int gen_set_psr_T0(DisasContext *s, uint32_t mask, int spsr) +/* Returns nonzero if access to the PSR is not permitted. Marks t0 as dead. */ +static int gen_set_psr(DisasContext *s, uint32_t mask, int spsr, TCGv t0) { TCGv tmp; if (spsr) { @@ -3426,16 +3426,26 @@ static int gen_set_psr_T0(DisasContext *s, uint32_t mask, int spsr) tmp = load_cpu_field(spsr); tcg_gen_andi_i32(tmp, tmp, ~mask); - tcg_gen_andi_i32(cpu_T[0], cpu_T[0], mask); - tcg_gen_or_i32(tmp, tmp, cpu_T[0]); + tcg_gen_andi_i32(t0, t0, mask); + tcg_gen_or_i32(tmp, tmp, t0); store_cpu_field(tmp, spsr); } else { - gen_set_cpsr(cpu_T[0], mask); + gen_set_cpsr(t0, mask); } + dead_tmp(t0); gen_lookup_tb(s); return 0; } +/* Returns nonzero if access to the PSR is not permitted. */ +static int gen_set_psr_im(DisasContext *s, uint32_t mask, int spsr, uint32_t val) +{ + TCGv tmp; + tmp = new_tmp(); + tcg_gen_movi_i32(tmp, val); + return gen_set_psr(s, mask, spsr, tmp); +} + /* Generate an old-style exception return. Marks pc as dead. */ static void gen_exception_return(DisasContext *s, TCGv pc) { @@ -5883,8 +5893,7 @@ static void disas_arm_insn(CPUState * env, DisasContext *s) val |= (insn & 0x1f); } if (mask) { - gen_op_movl_T0_im(val); - gen_set_psr_T0(s, mask, 0); + gen_set_psr_im(s, mask, 0, val); } return; } @@ -5924,9 +5933,8 @@ static void disas_arm_insn(CPUState * env, DisasContext *s) shift = ((insn >> 8) & 0xf) * 2; if (shift) val = (val >> shift) | (val << (32 - shift)); - gen_op_movl_T0_im(val); i = ((insn & (1 << 22)) != 0); - if (gen_set_psr_T0(s, msr_mask(env, s, (insn >> 16) & 0xf, i), i)) + if (gen_set_psr_im(s, msr_mask(env, s, (insn >> 16) & 0xf, i), i, val)) goto illegal_op; } } @@ -5940,9 +5948,9 @@ static void disas_arm_insn(CPUState * env, DisasContext *s) case 0x0: /* move program status register */ if (op1 & 1) { /* PSR = reg */ - gen_movl_T0_reg(s, rm); + tmp = load_reg(s, rm); i = ((op1 & 2) != 0); - if (gen_set_psr_T0(s, msr_mask(env, s, (insn >> 16) & 0xf, i), i)) + if (gen_set_psr(s, msr_mask(env, s, (insn >> 16) & 0xf, i), i, tmp)) goto illegal_op; } else { /* reg = PSR */ @@ -7647,10 +7655,10 @@ static int disas_thumb2_insn(CPUState *env, DisasContext *s, uint16_t insn_hw1) case 1: /* msr spsr. */ if (IS_M(env)) goto illegal_op; - gen_movl_T0_reg(s, rn); - if (gen_set_psr_T0(s, + tmp = load_reg(s, rn); + if (gen_set_psr(s, msr_mask(env, s, (insn >> 8) & 0xf, op == 1), - op == 1)) + op == 1, tmp)) goto illegal_op; break; case 2: /* cps, nop-hint. */ @@ -7677,8 +7685,7 @@ static int disas_thumb2_insn(CPUState *env, DisasContext *s, uint16_t insn_hw1) imm |= (insn & 0x1f); } if (offset) { - gen_op_movl_T0_im(imm); - gen_set_psr_T0(s, offset, 0); + gen_set_psr_im(s, offset, 0, imm); } break; case 3: /* Special control operations. */ @@ -8566,10 +8573,7 @@ static void disas_thumb_insn(CPUState *env, DisasContext *s) shift = CPSR_A | CPSR_I | CPSR_F; else shift = 0; - - val = ((insn & 7) << 6) & shift; - gen_op_movl_T0_im(val); - gen_set_psr_T0(s, shift, 0); + gen_set_psr_im(s, shift, 0, ((insn & 7) << 6) & shift); } break; |
