diff options
Diffstat (limited to 'target/openrisc/translate.c')
| -rw-r--r-- | target/openrisc/translate.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/target/openrisc/translate.c b/target/openrisc/translate.c index 03fa7db570..c207875fe6 100644 --- a/target/openrisc/translate.c +++ b/target/openrisc/translate.c @@ -61,6 +61,8 @@ static TCGv jmp_pc; /* l.jr/l.jalr temp pc */ static TCGv cpu_npc; static TCGv cpu_ppc; static TCGv_i32 env_btaken; /* bf/bnf , F flag taken */ +static TCGv cpu_lock_addr; +static TCGv cpu_lock_value; static TCGv_i32 fpcsr; static TCGv machi, maclo; static TCGv fpmaddhi, fpmaddlo; @@ -95,6 +97,12 @@ void openrisc_translate_init(void) env_btaken = tcg_global_mem_new_i32(cpu_env, offsetof(CPUOpenRISCState, btaken), "btaken"); + cpu_lock_addr = tcg_global_mem_new(cpu_env, + offsetof(CPUOpenRISCState, lock_addr), + "lock_addr"); + cpu_lock_value = tcg_global_mem_new(cpu_env, + offsetof(CPUOpenRISCState, lock_value), + "lock_value"); fpcsr = tcg_global_mem_new_i32(cpu_env, offsetof(CPUOpenRISCState, fpcsr), "fpcsr"); @@ -265,6 +273,46 @@ static void gen_jump(DisasContext *dc, uint32_t imm, uint32_t reg, uint32_t op0) } +static void gen_lwa(DisasContext *dc, TCGv rd, TCGv ra, int32_t ofs) +{ + TCGv ea = tcg_temp_new(); + + tcg_gen_addi_tl(ea, ra, ofs); + tcg_gen_qemu_ld_tl(rd, ea, dc->mem_idx, MO_TEUL); + tcg_gen_mov_tl(cpu_lock_addr, ea); + tcg_gen_mov_tl(cpu_lock_value, rd); + tcg_temp_free(ea); +} + +static void gen_swa(DisasContext *dc, TCGv rb, TCGv ra, int32_t ofs) +{ + TCGv ea, val; + TCGLabel *lab_fail, *lab_done; + + ea = tcg_temp_new(); + tcg_gen_addi_tl(ea, ra, ofs); + + lab_fail = gen_new_label(); + lab_done = gen_new_label(); + tcg_gen_brcond_tl(TCG_COND_NE, ea, cpu_lock_addr, lab_fail); + tcg_temp_free(ea); + + val = tcg_temp_new(); + tcg_gen_atomic_cmpxchg_tl(val, cpu_lock_addr, cpu_lock_value, + rb, dc->mem_idx, MO_TEUL); + tcg_gen_setcond_tl(TCG_COND_EQ, env_btaken, val, cpu_lock_value); + tcg_temp_free(val); + + tcg_gen_br(lab_done); + + gen_set_label(lab_fail); + tcg_gen_movi_tl(env_btaken, 0); + + gen_set_label(lab_done); + tcg_gen_movi_tl(cpu_lock_addr, -1); + wb_SR_F(); +} + static void dec_calc(DisasContext *dc, uint32_t insn) { uint32_t op0, op1, op2; @@ -819,6 +867,11 @@ static void dec_misc(DisasContext *dc, uint32_t insn) } break; + case 0x1b: /* l.lwa */ + LOG_DIS("l.lwa r%d, r%d, %d\n", rd, ra, I16); + gen_lwa(dc, cpu_R[rd], cpu_R[ra], I16); + break; + case 0x1c: /* l.cust1 */ LOG_DIS("l.cust1\n"); break; @@ -1029,6 +1082,11 @@ static void dec_misc(DisasContext *dc, uint32_t insn) } break; + case 0x33: /* l.swa */ + LOG_DIS("l.swa %d, r%d, r%d, %d\n", I5, ra, rb, I11); + gen_swa(dc, cpu_R[rb], cpu_R[ra], sign_extend(tmp, 16)); + break; + /* not used yet, open it when we need or64. */ /*#ifdef TARGET_OPENRISC64 case 0x34: l.sd |