diff options
Diffstat (limited to 'target-arm')
| -rw-r--r-- | target-arm/translate.c | 39 |
1 files changed, 26 insertions, 13 deletions
diff --git a/target-arm/translate.c b/target-arm/translate.c index eeb6c09bbe..adac19a267 100644 --- a/target-arm/translate.c +++ b/target-arm/translate.c @@ -820,6 +820,19 @@ static inline void gen_bx_T0(DisasContext *s) gen_bx(s, tmp); } +/* Variant of store_reg which uses branch&exchange logic when storing + to r15 in ARM architecture v7 and above. The source must be a temporary + and will be marked as dead. */ +static inline void store_reg_bx(CPUState *env, DisasContext *s, + int reg, TCGv var) +{ + if (reg == 15 && ENABLE_ARCH_7) { + gen_bx(s, var); + } else { + store_reg(s, reg, var); + } +} + static inline TCGv gen_ld8s(TCGv addr, int index) { TCGv tmp = new_tmp(); @@ -6131,14 +6144,14 @@ static void disas_arm_insn(CPUState * env, DisasContext *s) if (logic_cc) { gen_logic_CC(tmp); } - store_reg(s, rd, tmp); + store_reg_bx(env, s, rd, tmp); break; case 0x01: tcg_gen_xor_i32(tmp, tmp, tmp2); if (logic_cc) { gen_logic_CC(tmp); } - store_reg(s, rd, tmp); + store_reg_bx(env, s, rd, tmp); break; case 0x02: if (set_cc && rd == 15) { @@ -6154,7 +6167,7 @@ static void disas_arm_insn(CPUState * env, DisasContext *s) } else { tcg_gen_sub_i32(tmp, tmp, tmp2); } - store_reg(s, rd, tmp); + store_reg_bx(env, s, rd, tmp); } break; case 0x03: @@ -6163,7 +6176,7 @@ static void disas_arm_insn(CPUState * env, DisasContext *s) } else { tcg_gen_sub_i32(tmp, tmp2, tmp); } - store_reg(s, rd, tmp); + store_reg_bx(env, s, rd, tmp); break; case 0x04: if (set_cc) { @@ -6171,7 +6184,7 @@ static void disas_arm_insn(CPUState * env, DisasContext *s) } else { tcg_gen_add_i32(tmp, tmp, tmp2); } - store_reg(s, rd, tmp); + store_reg_bx(env, s, rd, tmp); break; case 0x05: if (set_cc) { @@ -6179,7 +6192,7 @@ static void disas_arm_insn(CPUState * env, DisasContext *s) } else { gen_add_carry(tmp, tmp, tmp2); } - store_reg(s, rd, tmp); + store_reg_bx(env, s, rd, tmp); break; case 0x06: if (set_cc) { @@ -6187,7 +6200,7 @@ static void disas_arm_insn(CPUState * env, DisasContext *s) } else { gen_sub_carry(tmp, tmp, tmp2); } - store_reg(s, rd, tmp); + store_reg_bx(env, s, rd, tmp); break; case 0x07: if (set_cc) { @@ -6195,7 +6208,7 @@ static void disas_arm_insn(CPUState * env, DisasContext *s) } else { gen_sub_carry(tmp, tmp2, tmp); } - store_reg(s, rd, tmp); + store_reg_bx(env, s, rd, tmp); break; case 0x08: if (set_cc) { @@ -6228,7 +6241,7 @@ static void disas_arm_insn(CPUState * env, DisasContext *s) if (logic_cc) { gen_logic_CC(tmp); } - store_reg(s, rd, tmp); + store_reg_bx(env, s, rd, tmp); break; case 0x0d: if (logic_cc && rd == 15) { @@ -6241,7 +6254,7 @@ static void disas_arm_insn(CPUState * env, DisasContext *s) if (logic_cc) { gen_logic_CC(tmp2); } - store_reg(s, rd, tmp2); + store_reg_bx(env, s, rd, tmp2); } break; case 0x0e: @@ -6249,7 +6262,7 @@ static void disas_arm_insn(CPUState * env, DisasContext *s) if (logic_cc) { gen_logic_CC(tmp); } - store_reg(s, rd, tmp); + store_reg_bx(env, s, rd, tmp); break; default: case 0x0f: @@ -6257,7 +6270,7 @@ static void disas_arm_insn(CPUState * env, DisasContext *s) if (logic_cc) { gen_logic_CC(tmp2); } - store_reg(s, rd, tmp2); + store_reg_bx(env, s, rd, tmp2); break; } if (op1 != 0x0f && op1 != 0x0d) { @@ -7359,7 +7372,7 @@ static int disas_thumb2_insn(CPUState *env, DisasContext *s, uint16_t insn_hw1) gen_arm_shift_reg(tmp, op, tmp2, logic_cc); if (logic_cc) gen_logic_CC(tmp); - store_reg(s, rd, tmp); + store_reg_bx(env, s, rd, tmp); break; case 1: /* Sign/zero extend. */ tmp = load_reg(s, rm); |