| /* |
| * OpenRISC translation |
| * |
| * Copyright (c) 2011-2012 Jia Liu <proljc@gmail.com> |
| * Feng Gao <gf91597@gmail.com> |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| #include "qemu/osdep.h" |
| #include "cpu.h" |
| #include "exec/exec-all.h" |
| #include "disas/disas.h" |
| #include "tcg-op.h" |
| #include "qemu-common.h" |
| #include "qemu/log.h" |
| #include "qemu/bitops.h" |
| #include "exec/cpu_ldst.h" |
| |
| #include "exec/helper-proto.h" |
| #include "exec/helper-gen.h" |
| |
| #include "trace-tcg.h" |
| #include "exec/log.h" |
| |
| |
| #define OPENRISC_DISAS |
| |
| #ifdef OPENRISC_DISAS |
| # define LOG_DIS(...) qemu_log_mask(CPU_LOG_TB_IN_ASM, ## __VA_ARGS__) |
| #else |
| # define LOG_DIS(...) do { } while (0) |
| #endif |
| |
| typedef struct DisasContext { |
| TranslationBlock *tb; |
| target_ulong pc, ppc, npc; |
| uint32_t tb_flags, synced_flags, flags; |
| uint32_t is_jmp; |
| uint32_t mem_idx; |
| int singlestep_enabled; |
| uint32_t delayed_branch; |
| } DisasContext; |
| |
| static TCGv_env cpu_env; |
| static TCGv cpu_sr; |
| static TCGv cpu_R[32]; |
| static TCGv cpu_pc; |
| 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_i32 fpcsr; |
| static TCGv machi, maclo; |
| static TCGv fpmaddhi, fpmaddlo; |
| static TCGv_i32 env_flags; |
| #include "exec/gen-icount.h" |
| |
| void openrisc_translate_init(void) |
| { |
| static const char * const regnames[] = { |
| "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
| "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", |
| "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", |
| "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", |
| }; |
| int i; |
| |
| cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env"); |
| tcg_ctx.tcg_env = cpu_env; |
| cpu_sr = tcg_global_mem_new(cpu_env, |
| offsetof(CPUOpenRISCState, sr), "sr"); |
| env_flags = tcg_global_mem_new_i32(cpu_env, |
| offsetof(CPUOpenRISCState, flags), |
| "flags"); |
| cpu_pc = tcg_global_mem_new(cpu_env, |
| offsetof(CPUOpenRISCState, pc), "pc"); |
| cpu_npc = tcg_global_mem_new(cpu_env, |
| offsetof(CPUOpenRISCState, npc), "npc"); |
| cpu_ppc = tcg_global_mem_new(cpu_env, |
| offsetof(CPUOpenRISCState, ppc), "ppc"); |
| jmp_pc = tcg_global_mem_new(cpu_env, |
| offsetof(CPUOpenRISCState, jmp_pc), "jmp_pc"); |
| env_btaken = tcg_global_mem_new_i32(cpu_env, |
| offsetof(CPUOpenRISCState, btaken), |
| "btaken"); |
| fpcsr = tcg_global_mem_new_i32(cpu_env, |
| offsetof(CPUOpenRISCState, fpcsr), |
| "fpcsr"); |
| machi = tcg_global_mem_new(cpu_env, |
| offsetof(CPUOpenRISCState, machi), |
| "machi"); |
| maclo = tcg_global_mem_new(cpu_env, |
| offsetof(CPUOpenRISCState, maclo), |
| "maclo"); |
| fpmaddhi = tcg_global_mem_new(cpu_env, |
| offsetof(CPUOpenRISCState, fpmaddhi), |
| "fpmaddhi"); |
| fpmaddlo = tcg_global_mem_new(cpu_env, |
| offsetof(CPUOpenRISCState, fpmaddlo), |
| "fpmaddlo"); |
| for (i = 0; i < 32; i++) { |
| cpu_R[i] = tcg_global_mem_new(cpu_env, |
| offsetof(CPUOpenRISCState, gpr[i]), |
| regnames[i]); |
| } |
| } |
| |
| /* Writeback SR_F translation space to execution space. */ |
| static inline void wb_SR_F(void) |
| { |
| TCGLabel *label = gen_new_label(); |
| tcg_gen_andi_tl(cpu_sr, cpu_sr, ~SR_F); |
| tcg_gen_brcondi_tl(TCG_COND_EQ, env_btaken, 0, label); |
| tcg_gen_ori_tl(cpu_sr, cpu_sr, SR_F); |
| gen_set_label(label); |
| } |
| |
| static inline int zero_extend(unsigned int val, int width) |
| { |
| return val & ((1 << width) - 1); |
| } |
| |
| static inline int sign_extend(unsigned int val, int width) |
| { |
| int sval; |
| |
| /* LSL */ |
| val <<= TARGET_LONG_BITS - width; |
| sval = val; |
| /* ASR. */ |
| sval >>= TARGET_LONG_BITS - width; |
| return sval; |
| } |
| |
| static inline void gen_sync_flags(DisasContext *dc) |
| { |
| /* Sync the tb dependent flag between translate and runtime. */ |
| if (dc->tb_flags != dc->synced_flags) { |
| tcg_gen_movi_tl(env_flags, dc->tb_flags); |
| dc->synced_flags = dc->tb_flags; |
| } |
| } |
| |
| static void gen_exception(DisasContext *dc, unsigned int excp) |
| { |
| TCGv_i32 tmp = tcg_const_i32(excp); |
| gen_helper_exception(cpu_env, tmp); |
| tcg_temp_free_i32(tmp); |
| } |
| |
| static void gen_illegal_exception(DisasContext *dc) |
| { |
| tcg_gen_movi_tl(cpu_pc, dc->pc); |
| gen_exception(dc, EXCP_ILLEGAL); |
| dc->is_jmp = DISAS_UPDATE; |
| } |
| |
| /* not used yet, open it when we need or64. */ |
| /*#ifdef TARGET_OPENRISC64 |
| static void check_ob64s(DisasContext *dc) |
| { |
| if (!(dc->flags & CPUCFGR_OB64S)) { |
| gen_illegal_exception(dc); |
| } |
| } |
| |
| static void check_of64s(DisasContext *dc) |
| { |
| if (!(dc->flags & CPUCFGR_OF64S)) { |
| gen_illegal_exception(dc); |
| } |
| } |
| |
| static void check_ov64s(DisasContext *dc) |
| { |
| if (!(dc->flags & CPUCFGR_OV64S)) { |
| gen_illegal_exception(dc); |
| } |
| } |
| #endif*/ |
| |
| static inline bool use_goto_tb(DisasContext *dc, target_ulong dest) |
| { |
| if (unlikely(dc->singlestep_enabled)) { |
| return false; |
| } |
| |
| #ifndef CONFIG_USER_ONLY |
| return (dc->tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK); |
| #else |
| return true; |
| #endif |
| } |
| |
| static void gen_goto_tb(DisasContext *dc, int n, target_ulong dest) |
| { |
| if (use_goto_tb(dc, dest)) { |
| tcg_gen_movi_tl(cpu_pc, dest); |
| tcg_gen_goto_tb(n); |
| tcg_gen_exit_tb((uintptr_t)dc->tb + n); |
| } else { |
| tcg_gen_movi_tl(cpu_pc, dest); |
| if (dc->singlestep_enabled) { |
| gen_exception(dc, EXCP_DEBUG); |
| } |
| tcg_gen_exit_tb(0); |
| } |
| } |
| |
| static void gen_jump(DisasContext *dc, uint32_t imm, uint32_t reg, uint32_t op0) |
| { |
| target_ulong tmp_pc; |
| /* N26, 26bits imm */ |
| tmp_pc = sign_extend((imm<<2), 26) + dc->pc; |
| |
| switch (op0) { |
| case 0x00: /* l.j */ |
| tcg_gen_movi_tl(jmp_pc, tmp_pc); |
| break; |
| case 0x01: /* l.jal */ |
| tcg_gen_movi_tl(cpu_R[9], (dc->pc + 8)); |
| tcg_gen_movi_tl(jmp_pc, tmp_pc); |
| break; |
| case 0x03: /* l.bnf */ |
| case 0x04: /* l.bf */ |
| { |
| TCGLabel *lab = gen_new_label(); |
| TCGv sr_f = tcg_temp_new(); |
| tcg_gen_movi_tl(jmp_pc, dc->pc+8); |
| tcg_gen_andi_tl(sr_f, cpu_sr, SR_F); |
| tcg_gen_brcondi_i32(op0 == 0x03 ? TCG_COND_EQ : TCG_COND_NE, |
| sr_f, SR_F, lab); |
| tcg_gen_movi_tl(jmp_pc, tmp_pc); |
| gen_set_label(lab); |
| tcg_temp_free(sr_f); |
| } |
| break; |
| case 0x11: /* l.jr */ |
| tcg_gen_mov_tl(jmp_pc, cpu_R[reg]); |
| break; |
| case 0x12: /* l.jalr */ |
| tcg_gen_movi_tl(cpu_R[9], (dc->pc + 8)); |
| tcg_gen_mov_tl(jmp_pc, cpu_R[reg]); |
| break; |
| default: |
| gen_illegal_exception(dc); |
| break; |
| } |
| |
| dc->delayed_branch = 2; |
| dc->tb_flags |= D_FLAG; |
| gen_sync_flags(dc); |
| } |
| |
| |
| static void dec_calc(DisasContext *dc, uint32_t insn) |
| { |
| uint32_t op0, op1, op2; |
| uint32_t ra, rb, rd; |
| op0 = extract32(insn, 0, 4); |
| op1 = extract32(insn, 8, 2); |
| op2 = extract32(insn, 6, 2); |
| ra = extract32(insn, 16, 5); |
| rb = extract32(insn, 11, 5); |
| rd = extract32(insn, 21, 5); |
| |
| switch (op0) { |
| case 0x0000: |
| switch (op1) { |
| case 0x00: /* l.add */ |
| LOG_DIS("l.add r%d, r%d, r%d\n", rd, ra, rb); |
| { |
| TCGLabel *lab = gen_new_label(); |
| TCGv_i64 ta = tcg_temp_new_i64(); |
| TCGv_i64 tb = tcg_temp_new_i64(); |
| TCGv_i64 td = tcg_temp_local_new_i64(); |
| TCGv_i32 res = tcg_temp_local_new_i32(); |
| TCGv_i32 sr_ove = tcg_temp_local_new_i32(); |
| tcg_gen_extu_i32_i64(ta, cpu_R[ra]); |
| tcg_gen_extu_i32_i64(tb, cpu_R[rb]); |
| tcg_gen_add_i64(td, ta, tb); |
| tcg_gen_extrl_i64_i32(res, td); |
| tcg_gen_shri_i64(td, td, 31); |
| tcg_gen_andi_i64(td, td, 0x3); |
| /* Jump to lab when no overflow. */ |
| tcg_gen_brcondi_i64(TCG_COND_EQ, td, 0x0, lab); |
| tcg_gen_brcondi_i64(TCG_COND_EQ, td, 0x3, lab); |
| tcg_gen_ori_i32(cpu_sr, cpu_sr, (SR_OV | SR_CY)); |
| tcg_gen_andi_i32(sr_ove, cpu_sr, SR_OVE); |
| tcg_gen_brcondi_i32(TCG_COND_NE, sr_ove, SR_OVE, lab); |
| gen_exception(dc, EXCP_RANGE); |
| gen_set_label(lab); |
| tcg_gen_mov_i32(cpu_R[rd], res); |
| tcg_temp_free_i64(ta); |
| tcg_temp_free_i64(tb); |
| tcg_temp_free_i64(td); |
| tcg_temp_free_i32(res); |
| tcg_temp_free_i32(sr_ove); |
| } |
| break; |
| default: |
| gen_illegal_exception(dc); |
| break; |
| } |
| break; |
| |
| case 0x0001: /* l.addc */ |
| switch (op1) { |
| case 0x00: |
| LOG_DIS("l.addc r%d, r%d, r%d\n", rd, ra, rb); |
| { |
| TCGLabel *lab = gen_new_label(); |
| TCGv_i64 ta = tcg_temp_new_i64(); |
| TCGv_i64 tb = tcg_temp_new_i64(); |
| TCGv_i64 tcy = tcg_temp_local_new_i64(); |
| TCGv_i64 td = tcg_temp_local_new_i64(); |
| TCGv_i32 res = tcg_temp_local_new_i32(); |
| TCGv_i32 sr_cy = tcg_temp_local_new_i32(); |
| TCGv_i32 sr_ove = tcg_temp_local_new_i32(); |
| tcg_gen_extu_i32_i64(ta, cpu_R[ra]); |
| tcg_gen_extu_i32_i64(tb, cpu_R[rb]); |
| tcg_gen_andi_i32(sr_cy, cpu_sr, SR_CY); |
| tcg_gen_extu_i32_i64(tcy, sr_cy); |
| tcg_gen_shri_i64(tcy, tcy, 10); |
| tcg_gen_add_i64(td, ta, tb); |
| tcg_gen_add_i64(td, td, tcy); |
| tcg_gen_extrl_i64_i32(res, td); |
| tcg_gen_shri_i64(td, td, 32); |
| tcg_gen_andi_i64(td, td, 0x3); |
| /* Jump to lab when no overflow. */ |
| tcg_gen_brcondi_i64(TCG_COND_EQ, td, 0x0, lab); |
| tcg_gen_brcondi_i64(TCG_COND_EQ, td, 0x3, lab); |
| tcg_gen_ori_i32(cpu_sr, cpu_sr, (SR_OV | SR_CY)); |
| tcg_gen_andi_i32(sr_ove, cpu_sr, SR_OVE); |
| tcg_gen_brcondi_i32(TCG_COND_NE, sr_ove, SR_OVE, lab); |
| gen_exception(dc, EXCP_RANGE); |
| gen_set_label(lab); |
| tcg_gen_mov_i32(cpu_R[rd], res); |
| tcg_temp_free_i64(ta); |
| tcg_temp_free_i64(tb); |
| tcg_temp_free_i64(tcy); |
| tcg_temp_free_i64(td); |
| tcg_temp_free_i32(res); |
| tcg_temp_free_i32(sr_cy); |
| tcg_temp_free_i32(sr_ove); |
| } |
| break; |
| default: |
| gen_illegal_exception(dc); |
| break; |
| } |
| break; |
| |
| case 0x0002: /* l.sub */ |
| switch (op1) { |
| case 0x00: |
| LOG_DIS("l.sub r%d, r%d, r%d\n", rd, ra, rb); |
| { |
| TCGLabel *lab = gen_new_label(); |
| TCGv_i64 ta = tcg_temp_new_i64(); |
| TCGv_i64 tb = tcg_temp_new_i64(); |
| TCGv_i64 td = tcg_temp_local_new_i64(); |
| TCGv_i32 res = tcg_temp_local_new_i32(); |
| TCGv_i32 sr_ove = tcg_temp_local_new_i32(); |
| |
| tcg_gen_extu_i32_i64(ta, cpu_R[ra]); |
| tcg_gen_extu_i32_i64(tb, cpu_R[rb]); |
| tcg_gen_sub_i64(td, ta, tb); |
| tcg_gen_extrl_i64_i32(res, td); |
| tcg_gen_shri_i64(td, td, 31); |
| tcg_gen_andi_i64(td, td, 0x3); |
| /* Jump to lab when no overflow. */ |
| tcg_gen_brcondi_i64(TCG_COND_EQ, td, 0x0, lab); |
| tcg_gen_brcondi_i64(TCG_COND_EQ, td, 0x3, lab); |
| tcg_gen_ori_i32(cpu_sr, cpu_sr, (SR_OV | SR_CY)); |
| tcg_gen_andi_i32(sr_ove, cpu_sr, SR_OVE); |
| tcg_gen_brcondi_i32(TCG_COND_NE, sr_ove, SR_OVE, lab); |
| gen_exception(dc, EXCP_RANGE); |
| gen_set_label(lab); |
| tcg_gen_mov_i32(cpu_R[rd], res); |
| tcg_temp_free_i64(ta); |
| tcg_temp_free_i64(tb); |
| tcg_temp_free_i64(td); |
| tcg_temp_free_i32(res); |
| tcg_temp_free_i32(sr_ove); |
| } |
| break; |
| default: |
| gen_illegal_exception(dc); |
| break; |
| } |
| break; |
| |
| case 0x0003: /* l.and */ |
| switch (op1) { |
| case 0x00: |
| LOG_DIS("l.and r%d, r%d, r%d\n", rd, ra, rb); |
| tcg_gen_and_tl(cpu_R[rd], cpu_R[ra], cpu_R[rb]); |
| break; |
| default: |
| gen_illegal_exception(dc); |
| break; |
| } |
| break; |
| |
| case 0x0004: /* l.or */ |
| switch (op1) { |
| case 0x00: |
| LOG_DIS("l.or r%d, r%d, r%d\n", rd, ra, rb); |
| tcg_gen_or_tl(cpu_R[rd], cpu_R[ra], cpu_R[rb]); |
| break; |
| default: |
| gen_illegal_exception(dc); |
| break; |
| } |
| break; |
| |
| case 0x0005: |
| switch (op1) { |
| case 0x00: /* l.xor */ |
| LOG_DIS("l.xor r%d, r%d, r%d\n", rd, ra, rb); |
| tcg_gen_xor_tl(cpu_R[rd], cpu_R[ra], cpu_R[rb]); |
| break; |
| default: |
| gen_illegal_exception(dc); |
| break; |
| } |
| break; |
| |
| case 0x0006: |
| switch (op1) { |
| case 0x03: /* l.mul */ |
| LOG_DIS("l.mul r%d, r%d, r%d\n", rd, ra, rb); |
| if (ra != 0 && rb != 0) { |
| gen_helper_mul32(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]); |
| } else { |
| tcg_gen_movi_tl(cpu_R[rd], 0x0); |
| } |
| break; |
| default: |
| gen_illegal_exception(dc); |
| break; |
| } |
| break; |
| |
| case 0x0009: |
| switch (op1) { |
| case 0x03: /* l.div */ |
| LOG_DIS("l.div r%d, r%d, r%d\n", rd, ra, rb); |
| { |
| TCGLabel *lab0 = gen_new_label(); |
| TCGLabel *lab1 = gen_new_label(); |
| TCGLabel *lab2 = gen_new_label(); |
| TCGLabel *lab3 = gen_new_label(); |
| TCGv_i32 sr_ove = tcg_temp_local_new_i32(); |
| if (rb == 0) { |
| tcg_gen_ori_tl(cpu_sr, cpu_sr, (SR_OV | SR_CY)); |
| tcg_gen_andi_tl(sr_ove, cpu_sr, SR_OVE); |
| tcg_gen_brcondi_tl(TCG_COND_NE, sr_ove, SR_OVE, lab0); |
| gen_exception(dc, EXCP_RANGE); |
| gen_set_label(lab0); |
| } else { |
| tcg_gen_brcondi_tl(TCG_COND_EQ, cpu_R[rb], |
| 0x00000000, lab1); |
| tcg_gen_brcondi_tl(TCG_COND_NE, cpu_R[ra], |
| 0x80000000, lab2); |
| tcg_gen_brcondi_tl(TCG_COND_NE, cpu_R[rb], |
| 0xffffffff, lab2); |
| gen_set_label(lab1); |
| tcg_gen_ori_tl(cpu_sr, cpu_sr, (SR_OV | SR_CY)); |
| tcg_gen_andi_tl(sr_ove, cpu_sr, SR_OVE); |
| tcg_gen_brcondi_tl(TCG_COND_NE, sr_ove, SR_OVE, lab3); |
| gen_exception(dc, EXCP_RANGE); |
| gen_set_label(lab2); |
| tcg_gen_div_tl(cpu_R[rd], cpu_R[ra], cpu_R[rb]); |
| gen_set_label(lab3); |
| } |
| tcg_temp_free_i32(sr_ove); |
| } |
| break; |
| |
| default: |
| gen_illegal_exception(dc); |
| break; |
| } |
| break; |
| |
| case 0x000a: |
| switch (op1) { |
| case 0x03: /* l.divu */ |
| LOG_DIS("l.divu r%d, r%d, r%d\n", rd, ra, rb); |
| { |
| TCGLabel *lab0 = gen_new_label(); |
| TCGLabel *lab1 = gen_new_label(); |
| TCGLabel *lab2 = gen_new_label(); |
| TCGv_i32 sr_ove = tcg_temp_local_new_i32(); |
| if (rb == 0) { |
| tcg_gen_ori_tl(cpu_sr, cpu_sr, (SR_OV | SR_CY)); |
| tcg_gen_andi_tl(sr_ove, cpu_sr, SR_OVE); |
| tcg_gen_brcondi_tl(TCG_COND_NE, sr_ove, SR_OVE, lab0); |
| gen_exception(dc, EXCP_RANGE); |
| gen_set_label(lab0); |
| } else { |
| tcg_gen_brcondi_tl(TCG_COND_NE, cpu_R[rb], |
| 0x00000000, lab1); |
| tcg_gen_ori_tl(cpu_sr, cpu_sr, (SR_OV | SR_CY)); |
| tcg_gen_andi_tl(sr_ove, cpu_sr, SR_OVE); |
| tcg_gen_brcondi_tl(TCG_COND_NE, sr_ove, SR_OVE, lab2); |
| gen_exception(dc, EXCP_RANGE); |
| gen_set_label(lab1); |
| tcg_gen_divu_tl(cpu_R[rd], cpu_R[ra], cpu_R[rb]); |
| gen_set_label(lab2); |
| } |
| tcg_temp_free_i32(sr_ove); |
| } |
| break; |
| |
| default: |
| gen_illegal_exception(dc); |
| break; |
| } |
| break; |
| |
| case 0x000b: |
| switch (op1) { |
| case 0x03: /* l.mulu */ |
| LOG_DIS("l.mulu r%d, r%d, r%d\n", rd, ra, rb); |
| if (rb != 0 && ra != 0) { |
| TCGv_i64 result = tcg_temp_local_new_i64(); |
| TCGv_i64 tra = tcg_temp_local_new_i64(); |
| TCGv_i64 trb = tcg_temp_local_new_i64(); |
| TCGv_i64 high = tcg_temp_new_i64(); |
| TCGv_i32 sr_ove = tcg_temp_local_new_i32(); |
| TCGLabel *lab = gen_new_label(); |
| /* Calculate each result. */ |
| tcg_gen_extu_i32_i64(tra, cpu_R[ra]); |
| tcg_gen_extu_i32_i64(trb, cpu_R[rb]); |
| tcg_gen_mul_i64(result, tra, trb); |
| tcg_temp_free_i64(tra); |
| tcg_temp_free_i64(trb); |
| tcg_gen_shri_i64(high, result, TARGET_LONG_BITS); |
| /* Overflow or not. */ |
| tcg_gen_brcondi_i64(TCG_COND_EQ, high, 0x00000000, lab); |
| tcg_gen_ori_tl(cpu_sr, cpu_sr, (SR_OV | SR_CY)); |
| tcg_gen_andi_tl(sr_ove, cpu_sr, SR_OVE); |
| tcg_gen_brcondi_tl(TCG_COND_NE, sr_ove, SR_OVE, lab); |
| gen_exception(dc, EXCP_RANGE); |
| gen_set_label(lab); |
| tcg_temp_free_i64(high); |
| tcg_gen_trunc_i64_tl(cpu_R[rd], result); |
| tcg_temp_free_i64(result); |
| tcg_temp_free_i32(sr_ove); |
| } else { |
| tcg_gen_movi_tl(cpu_R[rd], 0); |
| } |
| break; |
| |
| default: |
| gen_illegal_exception(dc); |
| break; |
| } |
| break; |
| |
| case 0x000e: |
| switch (op1) { |
| case 0x00: /* l.cmov */ |
| LOG_DIS("l.cmov r%d, r%d, r%d\n", rd, ra, rb); |
| { |
| TCGLabel *lab = gen_new_label(); |
| TCGv res = tcg_temp_local_new(); |
| TCGv sr_f = tcg_temp_new(); |
| tcg_gen_andi_tl(sr_f, cpu_sr, SR_F); |
| tcg_gen_mov_tl(res, cpu_R[rb]); |
| tcg_gen_brcondi_tl(TCG_COND_NE, sr_f, SR_F, lab); |
| tcg_gen_mov_tl(res, cpu_R[ra]); |
| gen_set_label(lab); |
| tcg_gen_mov_tl(cpu_R[rd], res); |
| tcg_temp_free(sr_f); |
| tcg_temp_free(res); |
| } |
| break; |
| |
| default: |
| gen_illegal_exception(dc); |
| break; |
| } |
| break; |
| |
| case 0x000f: |
| switch (op1) { |
| case 0x00: /* l.ff1 */ |
| LOG_DIS("l.ff1 r%d, r%d, r%d\n", rd, ra, rb); |
| gen_helper_ff1(cpu_R[rd], cpu_R[ra]); |
| break; |
| case 0x01: /* l.fl1 */ |
| LOG_DIS("l.fl1 r%d, r%d, r%d\n", rd, ra, rb); |
| gen_helper_fl1(cpu_R[rd], cpu_R[ra]); |
| break; |
| |
| default: |
| gen_illegal_exception(dc); |
| break; |
| } |
| break; |
| |
| case 0x0008: |
| switch (op1) { |
| case 0x00: |
| switch (op2) { |
| case 0x00: /* l.sll */ |
| LOG_DIS("l.sll r%d, r%d, r%d\n", rd, ra, rb); |
| tcg_gen_shl_tl(cpu_R[rd], cpu_R[ra], cpu_R[rb]); |
| break; |
| case 0x01: /* l.srl */ |
| LOG_DIS("l.srl r%d, r%d, r%d\n", rd, ra, rb); |
| tcg_gen_shr_tl(cpu_R[rd], cpu_R[ra], cpu_R[rb]); |
| break; |
| case 0x02: /* l.sra */ |
| LOG_DIS("l.sra r%d, r%d, r%d\n", rd, ra, rb); |
| tcg_gen_sar_tl(cpu_R[rd], cpu_R[ra], cpu_R[rb]); |
| break; |
| case 0x03: /* l.ror */ |
| LOG_DIS("l.ror r%d, r%d, r%d\n", rd, ra, rb); |
| tcg_gen_rotr_tl(cpu_R[rd], cpu_R[ra], cpu_R[rb]); |
| break; |
| |
| default: |
| gen_illegal_exception(dc); |
| break; |
| } |
| break; |
| |
| default: |
| gen_illegal_exception(dc); |
| break; |
| } |
| break; |
| |
| case 0x000c: |
| switch (op1) { |
| case 0x00: |
| switch (op2) { |
| case 0x00: /* l.exths */ |
| LOG_DIS("l.exths r%d, r%d\n", rd, ra); |
| tcg_gen_ext16s_tl(cpu_R[rd], cpu_R[ra]); |
| break; |
| case 0x01: /* l.extbs */ |
| LOG_DIS("l.extbs r%d, r%d\n", rd, ra); |
| tcg_gen_ext8s_tl(cpu_R[rd], cpu_R[ra]); |
| break; |
| case 0x02: /* l.exthz */ |
| LOG_DIS("l.exthz r%d, r%d\n", rd, ra); |
| tcg_gen_ext16u_tl(cpu_R[rd], cpu_R[ra]); |
| break; |
| case 0x03: /* l.extbz */ |
| LOG_DIS("l.extbz r%d, r%d\n", rd, ra); |
| tcg_gen_ext8u_tl(cpu_R[rd], cpu_R[ra]); |
| break; |
| |
| default: |
| gen_illegal_exception(dc); |
| break; |
| } |
| break; |
| |
| default: |
| gen_illegal_exception(dc); |
| break; |
| } |
| break; |
| |
| case 0x000d: |
| switch (op1) { |
| case 0x00: |
| switch (op2) { |
| case 0x00: /* l.extws */ |
| LOG_DIS("l.extws r%d, r%d\n", rd, ra); |
| tcg_gen_ext32s_tl(cpu_R[rd], cpu_R[ra]); |
| break; |
| case 0x01: /* l.extwz */ |
| LOG_DIS("l.extwz r%d, r%d\n", rd, ra); |
| tcg_gen_ext32u_tl(cpu_R[rd], cpu_R[ra]); |
| break; |
| |
| default: |
| gen_illegal_exception(dc); |
| break; |
| } |
| break; |
| |
| default: |
| gen_illegal_exception(dc); |
| break; |
| } |
| break; |
| |
| default: |
| gen_illegal_exception(dc); |
| break; |
| } |
| } |
| |
| static void dec_misc(DisasContext *dc, uint32_t insn) |
| { |
| uint32_t op0, op1; |
| uint32_t ra, rb, rd; |
| #ifdef OPENRISC_DISAS |
| uint32_t L6, K5; |
| #endif |
| uint32_t I16, I5, I11, N26, tmp; |
| TCGMemOp mop; |
| |
| op0 = extract32(insn, 26, 6); |
| op1 = extract32(insn, 24, 2); |
| ra = extract32(insn, 16, 5); |
| rb = extract32(insn, 11, 5); |
| rd = extract32(insn, 21, 5); |
| #ifdef OPENRISC_DISAS |
| L6 = extract32(insn, 5, 6); |
| K5 = extract32(insn, 0, 5); |
| #endif |
| I16 = extract32(insn, 0, 16); |
| I5 = extract32(insn, 21, 5); |
| I11 = extract32(insn, 0, 11); |
| N26 = extract32(insn, 0, 26); |
| tmp = (I5<<11) + I11; |
| |
| switch (op0) { |
| case 0x00: /* l.j */ |
| LOG_DIS("l.j %d\n", N26); |
| gen_jump(dc, N26, 0, op0); |
| break; |
| |
| case 0x01: /* l.jal */ |
| LOG_DIS("l.jal %d\n", N26); |
| gen_jump(dc, N26, 0, op0); |
| break; |
| |
| case 0x03: /* l.bnf */ |
| LOG_DIS("l.bnf %d\n", N26); |
| gen_jump(dc, N26, 0, op0); |
| break; |
| |
| case 0x04: /* l.bf */ |
| LOG_DIS("l.bf %d\n", N26); |
| gen_jump(dc, N26, 0, op0); |
| break; |
| |
| case 0x05: |
| switch (op1) { |
| case 0x01: /* l.nop */ |
| LOG_DIS("l.nop %d\n", I16); |
| break; |
| |
| default: |
| gen_illegal_exception(dc); |
| break; |
| } |
| break; |
| |
| case 0x11: /* l.jr */ |
| LOG_DIS("l.jr r%d\n", rb); |
| gen_jump(dc, 0, rb, op0); |
| break; |
| |
| case 0x12: /* l.jalr */ |
| LOG_DIS("l.jalr r%d\n", rb); |
| gen_jump(dc, 0, rb, op0); |
| break; |
| |
| case 0x13: /* l.maci */ |
| LOG_DIS("l.maci %d, r%d, %d\n", I5, ra, I11); |
| { |
| TCGv_i64 t1 = tcg_temp_new_i64(); |
| TCGv_i64 t2 = tcg_temp_new_i64(); |
| TCGv_i32 dst = tcg_temp_new_i32(); |
| TCGv ttmp = tcg_const_tl(tmp); |
| tcg_gen_mul_tl(dst, cpu_R[ra], ttmp); |
| tcg_gen_ext_i32_i64(t1, dst); |
| tcg_gen_concat_i32_i64(t2, maclo, machi); |
| tcg_gen_add_i64(t2, t2, t1); |
| tcg_gen_extrl_i64_i32(maclo, t2); |
| tcg_gen_shri_i64(t2, t2, 32); |
| tcg_gen_extrl_i64_i32(machi, t2); |
| tcg_temp_free_i32(dst); |
| tcg_temp_free(ttmp); |
| tcg_temp_free_i64(t1); |
| tcg_temp_free_i64(t2); |
| } |
| break; |
| |
| case 0x09: /* l.rfe */ |
| LOG_DIS("l.rfe\n"); |
| { |
| #if defined(CONFIG_USER_ONLY) |
| return; |
| #else |
| if (dc->mem_idx == MMU_USER_IDX) { |
| gen_illegal_exception(dc); |
| return; |
| } |
| gen_helper_rfe(cpu_env); |
| dc->is_jmp = DISAS_UPDATE; |
| #endif |
| } |
| break; |
| |
| case 0x1c: /* l.cust1 */ |
| LOG_DIS("l.cust1\n"); |
| break; |
| |
| case 0x1d: /* l.cust2 */ |
| LOG_DIS("l.cust2\n"); |
| break; |
| |
| case 0x1e: /* l.cust3 */ |
| LOG_DIS("l.cust3\n"); |
| break; |
| |
| case 0x1f: /* l.cust4 */ |
| LOG_DIS("l.cust4\n"); |
| break; |
| |
| case 0x3c: /* l.cust5 */ |
| LOG_DIS("l.cust5 r%d, r%d, r%d, %d, %d\n", rd, ra, rb, L6, K5); |
| break; |
| |
| case 0x3d: /* l.cust6 */ |
| LOG_DIS("l.cust6\n"); |
| break; |
| |
| case 0x3e: /* l.cust7 */ |
| LOG_DIS("l.cust7\n"); |
| break; |
| |
| case 0x3f: /* l.cust8 */ |
| LOG_DIS("l.cust8\n"); |
| break; |
| |
| /* not used yet, open it when we need or64. */ |
| /*#ifdef TARGET_OPENRISC64 |
| case 0x20: l.ld |
| LOG_DIS("l.ld r%d, r%d, %d\n", rd, ra, I16); |
| check_ob64s(dc); |
| mop = MO_TEQ; |
| goto do_load; |
| #endif*/ |
| |
| case 0x21: /* l.lwz */ |
| LOG_DIS("l.lwz r%d, r%d, %d\n", rd, ra, I16); |
| mop = MO_TEUL; |
| goto do_load; |
| |
| case 0x22: /* l.lws */ |
| LOG_DIS("l.lws r%d, r%d, %d\n", rd, ra, I16); |
| mop = MO_TESL; |
| goto do_load; |
| |
| case 0x23: /* l.lbz */ |
| LOG_DIS("l.lbz r%d, r%d, %d\n", rd, ra, I16); |
| mop = MO_UB; |
| goto do_load; |
| |
| case 0x24: /* l.lbs */ |
| LOG_DIS("l.lbs r%d, r%d, %d\n", rd, ra, I16); |
| mop = MO_SB; |
| goto do_load; |
| |
| case 0x25: /* l.lhz */ |
| LOG_DIS("l.lhz r%d, r%d, %d\n", rd, ra, I16); |
| mop = MO_TEUW; |
| goto do_load; |
| |
| case 0x26: /* l.lhs */ |
| LOG_DIS("l.lhs r%d, r%d, %d\n", rd, ra, I16); |
| mop = MO_TESW; |
| goto do_load; |
| |
| do_load: |
| { |
| TCGv t0 = tcg_temp_new(); |
| tcg_gen_addi_tl(t0, cpu_R[ra], sign_extend(I16, 16)); |
| tcg_gen_qemu_ld_tl(cpu_R[rd], t0, dc->mem_idx, mop); |
| tcg_temp_free(t0); |
| } |
| break; |
| |
| case 0x27: /* l.addi */ |
| LOG_DIS("l.addi r%d, r%d, %d\n", rd, ra, I16); |
| { |
| if (I16 == 0) { |
| tcg_gen_mov_tl(cpu_R[rd], cpu_R[ra]); |
| } else { |
| TCGLabel *lab = gen_new_label(); |
| TCGv_i64 ta = tcg_temp_new_i64(); |
| TCGv_i64 td = tcg_temp_local_new_i64(); |
| TCGv_i32 res = tcg_temp_local_new_i32(); |
| TCGv_i32 sr_ove = tcg_temp_local_new_i32(); |
| tcg_gen_extu_i32_i64(ta, cpu_R[ra]); |
| tcg_gen_addi_i64(td, ta, sign_extend(I16, 16)); |
| tcg_gen_extrl_i64_i32(res, td); |
| tcg_gen_shri_i64(td, td, 32); |
| tcg_gen_andi_i64(td, td, 0x3); |
| /* Jump to lab when no overflow. */ |
| tcg_gen_brcondi_i64(TCG_COND_EQ, td, 0x0, lab); |
| tcg_gen_brcondi_i64(TCG_COND_EQ, td, 0x3, lab); |
| tcg_gen_ori_i32(cpu_sr, cpu_sr, (SR_OV | SR_CY)); |
| tcg_gen_andi_i32(sr_ove, cpu_sr, SR_OVE); |
| tcg_gen_brcondi_i32(TCG_COND_NE, sr_ove, SR_OVE, lab); |
| gen_exception(dc, EXCP_RANGE); |
| gen_set_label(lab); |
| tcg_gen_mov_i32(cpu_R[rd], res); |
| tcg_temp_free_i64(ta); |
| tcg_temp_free_i64(td); |
| tcg_temp_free_i32(res); |
| tcg_temp_free_i32(sr_ove); |
| } |
| } |
| break; |
| |
| case 0x28: /* l.addic */ |
| LOG_DIS("l.addic r%d, r%d, %d\n", rd, ra, I16); |
| { |
| TCGLabel *lab = gen_new_label(); |
| TCGv_i64 ta = tcg_temp_new_i64(); |
| TCGv_i64 td = tcg_temp_local_new_i64(); |
| TCGv_i64 tcy = tcg_temp_local_new_i64(); |
| TCGv_i32 res = tcg_temp_local_new_i32(); |
| TCGv_i32 sr_cy = tcg_temp_local_new_i32(); |
| TCGv_i32 sr_ove = tcg_temp_local_new_i32(); |
| tcg_gen_extu_i32_i64(ta, cpu_R[ra]); |
| tcg_gen_andi_i32(sr_cy, cpu_sr, SR_CY); |
| tcg_gen_shri_i32(sr_cy, sr_cy, 10); |
| tcg_gen_extu_i32_i64(tcy, sr_cy); |
| tcg_gen_addi_i64(td, ta, sign_extend(I16, 16)); |
| tcg_gen_add_i64(td, td, tcy); |
| tcg_gen_extrl_i64_i32(res, td); |
| tcg_gen_shri_i64(td, td, 32); |
| tcg_gen_andi_i64(td, td, 0x3); |
| /* Jump to lab when no overflow. */ |
| tcg_gen_brcondi_i64(TCG_COND_EQ, td, 0x0, lab); |
| tcg_gen_brcondi_i64(TCG_COND_EQ, td, 0x3, lab); |
| tcg_gen_ori_i32(cpu_sr, cpu_sr, (SR_OV | SR_CY)); |
| tcg_gen_andi_i32(sr_ove, cpu_sr, SR_OVE); |
| tcg_gen_brcondi_i32(TCG_COND_NE, sr_ove, SR_OVE, lab); |
| gen_exception(dc, EXCP_RANGE); |
| gen_set_label(lab); |
| tcg_gen_mov_i32(cpu_R[rd], res); |
| tcg_temp_free_i64(ta); |
| tcg_temp_free_i64(td); |
| tcg_temp_free_i64(tcy); |
| tcg_temp_free_i32(res); |
| tcg_temp_free_i32(sr_cy); |
| tcg_temp_free_i32(sr_ove); |
| } |
| break; |
| |
| case 0x29: /* l.andi */ |
| LOG_DIS("l.andi r%d, r%d, %d\n", rd, ra, I16); |
| tcg_gen_andi_tl(cpu_R[rd], cpu_R[ra], zero_extend(I16, 16)); |
| break; |
| |
| case 0x2a: /* l.ori */ |
| LOG_DIS("l.ori r%d, r%d, %d\n", rd, ra, I16); |
| tcg_gen_ori_tl(cpu_R[rd], cpu_R[ra], zero_extend(I16, 16)); |
| break; |
| |
| case 0x2b: /* l.xori */ |
| LOG_DIS("l.xori r%d, r%d, %d\n", rd, ra, I16); |
| tcg_gen_xori_tl(cpu_R[rd], cpu_R[ra], sign_extend(I16, 16)); |
| break; |
| |
| case 0x2c: /* l.muli */ |
| LOG_DIS("l.muli r%d, r%d, %d\n", rd, ra, I16); |
| if (ra != 0 && I16 != 0) { |
| TCGv_i32 im = tcg_const_i32(I16); |
| gen_helper_mul32(cpu_R[rd], cpu_env, cpu_R[ra], im); |
| tcg_temp_free_i32(im); |
| } else { |
| tcg_gen_movi_tl(cpu_R[rd], 0x0); |
| } |
| break; |
| |
| case 0x2d: /* l.mfspr */ |
| LOG_DIS("l.mfspr r%d, r%d, %d\n", rd, ra, I16); |
| { |
| #if defined(CONFIG_USER_ONLY) |
| return; |
| #else |
| TCGv_i32 ti = tcg_const_i32(I16); |
| if (dc->mem_idx == MMU_USER_IDX) { |
| gen_illegal_exception(dc); |
| return; |
| } |
| gen_helper_mfspr(cpu_R[rd], cpu_env, cpu_R[rd], cpu_R[ra], ti); |
| tcg_temp_free_i32(ti); |
| #endif |
| } |
| break; |
| |
| case 0x30: /* l.mtspr */ |
| LOG_DIS("l.mtspr %d, r%d, r%d, %d\n", I5, ra, rb, I11); |
| { |
| #if defined(CONFIG_USER_ONLY) |
| return; |
| #else |
| TCGv_i32 im = tcg_const_i32(tmp); |
| if (dc->mem_idx == MMU_USER_IDX) { |
| gen_illegal_exception(dc); |
| return; |
| } |
| gen_helper_mtspr(cpu_env, cpu_R[ra], cpu_R[rb], im); |
| tcg_temp_free_i32(im); |
| #endif |
| } |
| break; |
| |
| /* not used yet, open it when we need or64. */ |
| /*#ifdef TARGET_OPENRISC64 |
| case 0x34: l.sd |
| LOG_DIS("l.sd %d, r%d, r%d, %d\n", I5, ra, rb, I11); |
| check_ob64s(dc); |
| mop = MO_TEQ; |
| goto do_store; |
| #endif*/ |
| |
| case 0x35: /* l.sw */ |
| LOG_DIS("l.sw %d, r%d, r%d, %d\n", I5, ra, rb, I11); |
| mop = MO_TEUL; |
| goto do_store; |
| |
| case 0x36: /* l.sb */ |
| LOG_DIS("l.sb %d, r%d, r%d, %d\n", I5, ra, rb, I11); |
| mop = MO_UB; |
| goto do_store; |
| |
| case 0x37: /* l.sh */ |
| LOG_DIS("l.sh %d, r%d, r%d, %d\n", I5, ra, rb, I11); |
| mop = MO_TEUW; |
| goto do_store; |
| |
| do_store: |
| { |
| TCGv t0 = tcg_temp_new(); |
| tcg_gen_addi_tl(t0, cpu_R[ra], sign_extend(tmp, 16)); |
| tcg_gen_qemu_st_tl(cpu_R[rb], t0, dc->mem_idx, mop); |
| tcg_temp_free(t0); |
| } |
| break; |
| |
| default: |
| gen_illegal_exception(dc); |
| break; |
| } |
| } |
| |
| static void dec_mac(DisasContext *dc, uint32_t insn) |
| { |
| uint32_t op0; |
| uint32_t ra, rb; |
| op0 = extract32(insn, 0, 4); |
| ra = extract32(insn, 16, 5); |
| rb = extract32(insn, 11, 5); |
| |
| switch (op0) { |
| case 0x0001: /* l.mac */ |
| LOG_DIS("l.mac r%d, r%d\n", ra, rb); |
| { |
| TCGv_i32 t0 = tcg_temp_new_i32(); |
| TCGv_i64 t1 = tcg_temp_new_i64(); |
| TCGv_i64 t2 = tcg_temp_new_i64(); |
| tcg_gen_mul_tl(t0, cpu_R[ra], cpu_R[rb]); |
| tcg_gen_ext_i32_i64(t1, t0); |
| tcg_gen_concat_i32_i64(t2, maclo, machi); |
| tcg_gen_add_i64(t2, t2, t1); |
| tcg_gen_extrl_i64_i32(maclo, t2); |
| tcg_gen_shri_i64(t2, t2, 32); |
| tcg_gen_extrl_i64_i32(machi, t2); |
| tcg_temp_free_i32(t0); |
| tcg_temp_free_i64(t1); |
| tcg_temp_free_i64(t2); |
| } |
| break; |
| |
| case 0x0002: /* l.msb */ |
| LOG_DIS("l.msb r%d, r%d\n", ra, rb); |
| { |
| TCGv_i32 t0 = tcg_temp_new_i32(); |
| TCGv_i64 t1 = tcg_temp_new_i64(); |
| TCGv_i64 t2 = tcg_temp_new_i64(); |
| tcg_gen_mul_tl(t0, cpu_R[ra], cpu_R[rb]); |
| tcg_gen_ext_i32_i64(t1, t0); |
| tcg_gen_concat_i32_i64(t2, maclo, machi); |
| tcg_gen_sub_i64(t2, t2, t1); |
| tcg_gen_extrl_i64_i32(maclo, t2); |
| tcg_gen_shri_i64(t2, t2, 32); |
| tcg_gen_extrl_i64_i32(machi, t2); |
| tcg_temp_free_i32(t0); |
| tcg_temp_free_i64(t1); |
| tcg_temp_free_i64(t2); |
| } |
| break; |
| |
| default: |
| gen_illegal_exception(dc); |
| break; |
| } |
| } |
| |
| static void dec_logic(DisasContext *dc, uint32_t insn) |
| { |
| uint32_t op0; |
| uint32_t rd, ra, L6; |
| op0 = extract32(insn, 6, 2); |
| rd = extract32(insn, 21, 5); |
| ra = extract32(insn, 16, 5); |
| L6 = extract32(insn, 0, 6); |
| |
| switch (op0) { |
| case 0x00: /* l.slli */ |
| LOG_DIS("l.slli r%d, r%d, %d\n", rd, ra, L6); |
| tcg_gen_shli_tl(cpu_R[rd], cpu_R[ra], (L6 & 0x1f)); |
| break; |
| |
| case 0x01: /* l.srli */ |
| LOG_DIS("l.srli r%d, r%d, %d\n", rd, ra, L6); |
| tcg_gen_shri_tl(cpu_R[rd], cpu_R[ra], (L6 & 0x1f)); |
| break; |
| |
| case 0x02: /* l.srai */ |
| LOG_DIS("l.srai r%d, r%d, %d\n", rd, ra, L6); |
| tcg_gen_sari_tl(cpu_R[rd], cpu_R[ra], (L6 & 0x1f)); break; |
| |
| case 0x03: /* l.rori */ |
| LOG_DIS("l.rori r%d, r%d, %d\n", rd, ra, L6); |
| tcg_gen_rotri_tl(cpu_R[rd], cpu_R[ra], (L6 & 0x1f)); |
| break; |
| |
| default: |
| gen_illegal_exception(dc); |
| break; |
| } |
| } |
| |
| static void dec_M(DisasContext *dc, uint32_t insn) |
| { |
| uint32_t op0; |
| uint32_t rd; |
| uint32_t K16; |
| op0 = extract32(insn, 16, 1); |
| rd = extract32(insn, 21, 5); |
| K16 = extract32(insn, 0, 16); |
| |
| switch (op0) { |
| case 0x0: /* l.movhi */ |
| LOG_DIS("l.movhi r%d, %d\n", rd, K16); |
| tcg_gen_movi_tl(cpu_R[rd], (K16 << 16)); |
| break; |
| |
| case 0x1: /* l.macrc */ |
| LOG_DIS("l.macrc r%d\n", rd); |
| tcg_gen_mov_tl(cpu_R[rd], maclo); |
| tcg_gen_movi_tl(maclo, 0x0); |
| tcg_gen_movi_tl(machi, 0x0); |
| break; |
| |
| default: |
| gen_illegal_exception(dc); |
| break; |
| } |
| } |
| |
| static void dec_comp(DisasContext *dc, uint32_t insn) |
| { |
| uint32_t op0; |
| uint32_t ra, rb; |
| |
| op0 = extract32(insn, 21, 5); |
| ra = extract32(insn, 16, 5); |
| rb = extract32(insn, 11, 5); |
| |
| tcg_gen_movi_i32(env_btaken, 0x0); |
| /* unsigned integers */ |
| tcg_gen_ext32u_tl(cpu_R[ra], cpu_R[ra]); |
| tcg_gen_ext32u_tl(cpu_R[rb], cpu_R[rb]); |
| |
| switch (op0) { |
| case 0x0: /* l.sfeq */ |
| LOG_DIS("l.sfeq r%d, r%d\n", ra, rb); |
| tcg_gen_setcond_tl(TCG_COND_EQ, env_btaken, cpu_R[ra], cpu_R[rb]); |
| break; |
| |
| case 0x1: /* l.sfne */ |
| LOG_DIS("l.sfne r%d, r%d\n", ra, rb); |
| tcg_gen_setcond_tl(TCG_COND_NE, env_btaken, cpu_R[ra], cpu_R[rb]); |
| break; |
| |
| case 0x2: /* l.sfgtu */ |
| LOG_DIS("l.sfgtu r%d, r%d\n", ra, rb); |
| tcg_gen_setcond_tl(TCG_COND_GTU, env_btaken, cpu_R[ra], cpu_R[rb]); |
| break; |
| |
| case 0x3: /* l.sfgeu */ |
| LOG_DIS("l.sfgeu r%d, r%d\n", ra, rb); |
| tcg_gen_setcond_tl(TCG_COND_GEU, env_btaken, cpu_R[ra], cpu_R[rb]); |
| break; |
| |
| case 0x4: /* l.sfltu */ |
| LOG_DIS("l.sfltu r%d, r%d\n", ra, rb); |
| tcg_gen_setcond_tl(TCG_COND_LTU, env_btaken, cpu_R[ra], cpu_R[rb]); |
| break; |
| |
| case 0x5: /* l.sfleu */ |
| LOG_DIS("l.sfleu r%d, r%d\n", ra, rb); |
| tcg_gen_setcond_tl(TCG_COND_LEU, env_btaken, cpu_R[ra], cpu_R[rb]); |
| break; |
| |
| case 0xa: /* l.sfgts */ |
| LOG_DIS("l.sfgts r%d, r%d\n", ra, rb); |
| tcg_gen_setcond_tl(TCG_COND_GT, env_btaken, cpu_R[ra], cpu_R[rb]); |
| break; |
| |
| case 0xb: /* l.sfges */ |
| LOG_DIS("l.sfges r%d, r%d\n", ra, rb); |
| tcg_gen_setcond_tl(TCG_COND_GE, env_btaken, cpu_R[ra], cpu_R[rb]); |
| break; |
| |
| case 0xc: /* l.sflts */ |
| LOG_DIS("l.sflts r%d, r%d\n", ra, rb); |
| tcg_gen_setcond_tl(TCG_COND_LT, env_btaken, cpu_R[ra], cpu_R[rb]); |
| break; |
| |
| case 0xd: /* l.sfles */ |
| LOG_DIS("l.sfles r%d, r%d\n", ra, rb); |
| tcg_gen_setcond_tl(TCG_COND_LE, env_btaken, cpu_R[ra], cpu_R[rb]); |
| break; |
| |
| default: |
| gen_illegal_exception(dc); |
| break; |
| } |
| wb_SR_F(); |
| } |
| |
| static void dec_compi(DisasContext *dc, uint32_t insn) |
| { |
| uint32_t op0; |
| uint32_t ra, I16; |
| |
| op0 = extract32(insn, 21, 5); |
| ra = extract32(insn, 16, 5); |
| I16 = extract32(insn, 0, 16); |
| |
| tcg_gen_movi_i32(env_btaken, 0x0); |
| I16 = sign_extend(I16, 16); |
| |
| switch (op0) { |
| case 0x0: /* l.sfeqi */ |
| LOG_DIS("l.sfeqi r%d, %d\n", ra, I16); |
| tcg_gen_setcondi_tl(TCG_COND_EQ, env_btaken, cpu_R[ra], I16); |
| break; |
| |
| case 0x1: /* l.sfnei */ |
| LOG_DIS("l.sfnei r%d, %d\n", ra, I16); |
| tcg_gen_setcondi_tl(TCG_COND_NE, env_btaken, cpu_R[ra], I16); |
| break; |
| |
| case 0x2: /* l.sfgtui */ |
| LOG_DIS("l.sfgtui r%d, %d\n", ra, I16); |
| tcg_gen_setcondi_tl(TCG_COND_GTU, env_btaken, cpu_R[ra], I16); |
| break; |
| |
| case 0x3: /* l.sfgeui */ |
| LOG_DIS("l.sfgeui r%d, %d\n", ra, I16); |
| tcg_gen_setcondi_tl(TCG_COND_GEU, env_btaken, cpu_R[ra], I16); |
| break; |
| |
| case 0x4: /* l.sfltui */ |
| LOG_DIS("l.sfltui r%d, %d\n", ra, I16); |
| tcg_gen_setcondi_tl(TCG_COND_LTU, env_btaken, cpu_R[ra], I16); |
| break; |
| |
| case 0x5: /* l.sfleui */ |
| LOG_DIS("l.sfleui r%d, %d\n", ra, I16); |
| tcg_gen_setcondi_tl(TCG_COND_LEU, env_btaken, cpu_R[ra], I16); |
| break; |
| |
| case 0xa: /* l.sfgtsi */ |
| LOG_DIS("l.sfgtsi r%d, %d\n", ra, I16); |
| tcg_gen_setcondi_tl(TCG_COND_GT, env_btaken, cpu_R[ra], I16); |
| break; |
| |
| case 0xb: /* l.sfgesi */ |
| LOG_DIS("l.sfgesi r%d, %d\n", ra, I16); |
| tcg_gen_setcondi_tl(TCG_COND_GE, env_btaken, cpu_R[ra], I16); |
| break; |
| |
| case 0xc: /* l.sfltsi */ |
| LOG_DIS("l.sfltsi r%d, %d\n", ra, I16); |
| tcg_gen_setcondi_tl(TCG_COND_LT, env_btaken, cpu_R[ra], I16); |
| break; |
| |
| case 0xd: /* l.sflesi */ |
| LOG_DIS("l.sflesi r%d, %d\n", ra, I16); |
| tcg_gen_setcondi_tl(TCG_COND_LE, env_btaken, cpu_R[ra], I16); |
| break; |
| |
| default: |
| gen_illegal_exception(dc); |
| break; |
| } |
| wb_SR_F(); |
| } |
| |
| static void dec_sys(DisasContext *dc, uint32_t insn) |
| { |
| uint32_t op0; |
| #ifdef OPENRISC_DISAS |
| uint32_t K16; |
| #endif |
| op0 = extract32(insn, 16, 10); |
| #ifdef OPENRISC_DISAS |
| K16 = extract32(insn, 0, 16); |
| #endif |
| |
| switch (op0) { |
| case 0x000: /* l.sys */ |
| LOG_DIS("l.sys %d\n", K16); |
| tcg_gen_movi_tl(cpu_pc, dc->pc); |
| gen_exception(dc, EXCP_SYSCALL); |
| dc->is_jmp = DISAS_UPDATE; |
| break; |
| |
| case 0x100: /* l.trap */ |
| LOG_DIS("l.trap %d\n", K16); |
| #if defined(CONFIG_USER_ONLY) |
| return; |
| #else |
| if (dc->mem_idx == MMU_USER_IDX) { |
| gen_illegal_exception(dc); |
| return; |
| } |
| tcg_gen_movi_tl(cpu_pc, dc->pc); |
| gen_exception(dc, EXCP_TRAP); |
| #endif |
| break; |
| |
| case 0x300: /* l.csync */ |
| LOG_DIS("l.csync\n"); |
| #if defined(CONFIG_USER_ONLY) |
| return; |
| #else |
| if (dc->mem_idx == MMU_USER_IDX) { |
| gen_illegal_exception(dc); |
| return; |
| } |
| #endif |
| break; |
| |
| case 0x200: /* l.msync */ |
| LOG_DIS("l.msync\n"); |
| #if defined(CONFIG_USER_ONLY) |
| return; |
| #else |
| if (dc->mem_idx == MMU_USER_IDX) { |
| gen_illegal_exception(dc); |
| return; |
| } |
| #endif |
| break; |
| |
| case 0x270: /* l.psync */ |
| LOG_DIS("l.psync\n"); |
| #if defined(CONFIG_USER_ONLY) |
| return; |
| #else |
| if (dc->mem_idx == MMU_USER_IDX) { |
| gen_illegal_exception(dc); |
| return; |
| } |
| #endif |
| break; |
| |
| default: |
| gen_illegal_exception(dc); |
| break; |
| } |
| } |
| |
| static void dec_float(DisasContext *dc, uint32_t insn) |
| { |
| uint32_t op0; |
| uint32_t ra, rb, rd; |
| op0 = extract32(insn, 0, 8); |
| ra = extract32(insn, 16, 5); |
| rb = extract32(insn, 11, 5); |
| rd = extract32(insn, 21, 5); |
| |
| switch (op0) { |
| case 0x00: /* lf.add.s */ |
| LOG_DIS("lf.add.s r%d, r%d, r%d\n", rd, ra, rb); |
| gen_helper_float_add_s(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]); |
| break; |
| |
| case 0x01: /* lf.sub.s */ |
| LOG_DIS("lf.sub.s r%d, r%d, r%d\n", rd, ra, rb); |
| gen_helper_float_sub_s(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]); |
| break; |
| |
| |
| case 0x02: /* lf.mul.s */ |
| LOG_DIS("lf.mul.s r%d, r%d, r%d\n", rd, ra, rb); |
| if (ra != 0 && rb != 0) { |
| gen_helper_float_mul_s(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]); |
| } else { |
| tcg_gen_ori_tl(fpcsr, fpcsr, FPCSR_ZF); |
| tcg_gen_movi_i32(cpu_R[rd], 0x0); |
| } |
| break; |
| |
| case 0x03: /* lf.div.s */ |
| LOG_DIS("lf.div.s r%d, r%d, r%d\n", rd, ra, rb); |
| gen_helper_float_div_s(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]); |
| break; |
| |
| case 0x04: /* lf.itof.s */ |
| LOG_DIS("lf.itof r%d, r%d\n", rd, ra); |
| gen_helper_itofs(cpu_R[rd], cpu_env, cpu_R[ra]); |
| break; |
| |
| case 0x05: /* lf.ftoi.s */ |
| LOG_DIS("lf.ftoi r%d, r%d\n", rd, ra); |
| gen_helper_ftois(cpu_R[rd], cpu_env, cpu_R[ra]); |
| break; |
| |
| case 0x06: /* lf.rem.s */ |
| LOG_DIS("lf.rem.s r%d, r%d, r%d\n", rd, ra, rb); |
| gen_helper_float_rem_s(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]); |
| break; |
| |
| case 0x07: /* lf.madd.s */ |
| LOG_DIS("lf.madd.s r%d, r%d, r%d\n", rd, ra, rb); |
| gen_helper_float_muladd_s(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]); |
| break; |
| |
| case 0x08: /* lf.sfeq.s */ |
| LOG_DIS("lf.sfeq.s r%d, r%d\n", ra, rb); |
| gen_helper_float_eq_s(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]); |
| break; |
| |
| case 0x09: /* lf.sfne.s */ |
| LOG_DIS("lf.sfne.s r%d, r%d\n", ra, rb); |
| gen_helper_float_ne_s(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]); |
| break; |
| |
| case 0x0a: /* lf.sfgt.s */ |
| LOG_DIS("lf.sfgt.s r%d, r%d\n", ra, rb); |
| gen_helper_float_gt_s(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]); |
| break; |
| |
| case 0x0b: /* lf.sfge.s */ |
| LOG_DIS("lf.sfge.s r%d, r%d\n", ra, rb); |
| gen_helper_float_ge_s(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]); |
| break; |
| |
| case 0x0c: /* lf.sflt.s */ |
| LOG_DIS("lf.sflt.s r%d, r%d\n", ra, rb); |
| gen_helper_float_lt_s(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]); |
| break; |
| |
| case 0x0d: /* lf.sfle.s */ |
| LOG_DIS("lf.sfle.s r%d, r%d\n", ra, rb); |
| gen_helper_float_le_s(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]); |
| break; |
| |
| /* not used yet, open it when we need or64. */ |
| /*#ifdef TARGET_OPENRISC64 |
| case 0x10: lf.add.d |
| LOG_DIS("lf.add.d r%d, r%d, r%d\n", rd, ra, rb); |
| check_of64s(dc); |
| gen_helper_float_add_d(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]); |
| break; |
| |
| case 0x11: lf.sub.d |
| LOG_DIS("lf.sub.d r%d, r%d, r%d\n", rd, ra, rb); |
| check_of64s(dc); |
| gen_helper_float_sub_d(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]); |
| break; |
| |
| case 0x12: lf.mul.d |
| LOG_DIS("lf.mul.d r%d, r%d, r%d\n", rd, ra, rb); |
| check_of64s(dc); |
| if (ra != 0 && rb != 0) { |
| gen_helper_float_mul_d(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]); |
| } else { |
| tcg_gen_ori_tl(fpcsr, fpcsr, FPCSR_ZF); |
| tcg_gen_movi_i64(cpu_R[rd], 0x0); |
| } |
| break; |
| |
| case 0x13: lf.div.d |
| LOG_DIS("lf.div.d r%d, r%d, r%d\n", rd, ra, rb); |
| check_of64s(dc); |
| gen_helper_float_div_d(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]); |
| break; |
| |
| case 0x14: lf.itof.d |
| LOG_DIS("lf.itof r%d, r%d\n", rd, ra); |
| check_of64s(dc); |
| gen_helper_itofd(cpu_R[rd], cpu_env, cpu_R[ra]); |
| break; |
| |
| case 0x15: lf.ftoi.d |
| LOG_DIS("lf.ftoi r%d, r%d\n", rd, ra); |
| check_of64s(dc); |
| gen_helper_ftoid(cpu_R[rd], cpu_env, cpu_R[ra]); |
| break; |
| |
| case 0x16: lf.rem.d |
| LOG_DIS("lf.rem.d r%d, r%d, r%d\n", rd, ra, rb); |
| check_of64s(dc); |
| gen_helper_float_rem_d(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]); |
| break; |
| |
| case 0x17: lf.madd.d |
| LOG_DIS("lf.madd.d r%d, r%d, r%d\n", rd, ra, rb); |
| check_of64s(dc); |
| gen_helper_float_muladd_d(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]); |
| break; |
| |
| case 0x18: lf.sfeq.d |
| LOG_DIS("lf.sfeq.d r%d, r%d\n", ra, rb); |
| check_of64s(dc); |
| gen_helper_float_eq_d(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]); |
| break; |
| |
| case 0x1a: lf.sfgt.d |
| LOG_DIS("lf.sfgt.d r%d, r%d\n", ra, rb); |
| check_of64s(dc); |
| gen_helper_float_gt_d(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]); |
| break; |
| |
| case 0x1b: lf.sfge.d |
| LOG_DIS("lf.sfge.d r%d, r%d\n", ra, rb); |
| check_of64s(dc); |
| gen_helper_float_ge_d(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]); |
| break; |
| |
| case 0x19: lf.sfne.d |
| LOG_DIS("lf.sfne.d r%d, r%d\n", ra, rb); |
| check_of64s(dc); |
| gen_helper_float_ne_d(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]); |
| break; |
| |
| case 0x1c: lf.sflt.d |
| LOG_DIS("lf.sflt.d r%d, r%d\n", ra, rb); |
| check_of64s(dc); |
| gen_helper_float_lt_d(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]); |
| break; |
| |
| case 0x1d: lf.sfle.d |
| LOG_DIS("lf.sfle.d r%d, r%d\n", ra, rb); |
| check_of64s(dc); |
| gen_helper_float_le_d(env_btaken, cpu_env, cpu_R[ra], cpu_R[rb]); |
| break; |
| #endif*/ |
| |
| default: |
| gen_illegal_exception(dc); |
| break; |
| } |
| wb_SR_F(); |
| } |
| |
| static void disas_openrisc_insn(DisasContext *dc, OpenRISCCPU *cpu) |
| { |
| uint32_t op0; |
| uint32_t insn; |
| insn = cpu_ldl_code(&cpu->env, dc->pc); |
| op0 = extract32(insn, 26, 6); |
| |
| switch (op0) { |
| case 0x06: |
| dec_M(dc, insn); |
| break; |
| |
| case 0x08: |
| dec_sys(dc, insn); |
| break; |
| |
| case 0x2e: |
| dec_logic(dc, insn); |
| break; |
| |
| case 0x2f: |
| dec_compi(dc, insn); |
| break; |
| |
| case 0x31: |
| dec_mac(dc, insn); |
| break; |
| |
| case 0x32: |
| dec_float(dc, insn); |
| break; |
| |
| case 0x38: |
| dec_calc(dc, insn); |
| break; |
| |
| case 0x39: |
| dec_comp(dc, insn); |
| break; |
| |
| default: |
| dec_misc(dc, insn); |
| break; |
| } |
| } |
| |
| void gen_intermediate_code(CPUOpenRISCState *env, struct TranslationBlock *tb) |
| { |
| OpenRISCCPU *cpu = openrisc_env_get_cpu(env); |
| CPUState *cs = CPU(cpu); |
| struct DisasContext ctx, *dc = &ctx; |
| uint32_t pc_start; |
| uint32_t next_page_start; |
| int num_insns; |
| int max_insns; |
| |
| pc_start = tb->pc; |
| dc->tb = tb; |
| |
| dc->is_jmp = DISAS_NEXT; |
| dc->ppc = pc_start; |
| dc->pc = pc_start; |
| dc->flags = cpu->env.cpucfgr; |
| dc->mem_idx = cpu_mmu_index(&cpu->env, false); |
| dc->synced_flags = dc->tb_flags = tb->flags; |
| dc->delayed_branch = !!(dc->tb_flags & D_FLAG); |
| dc->singlestep_enabled = cs->singlestep_enabled; |
| if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) { |
| qemu_log("-----------------------------------------\n"); |
| log_cpu_state(CPU(cpu), 0); |
| } |
| |
| next_page_start = (pc_start & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE; |
| num_insns = 0; |
| max_insns = tb->cflags & CF_COUNT_MASK; |
| |
| if (max_insns == 0) { |
| max_insns = CF_COUNT_MASK; |
| } |
| if (max_insns > TCG_MAX_INSNS) { |
| max_insns = TCG_MAX_INSNS; |
| } |
| |
| gen_tb_start(tb); |
| |
| do { |
| tcg_gen_insn_start(dc->pc); |
| num_insns++; |
| |
| if (unlikely(cpu_breakpoint_test(cs, dc->pc, BP_ANY))) { |
| tcg_gen_movi_tl(cpu_pc, dc->pc); |
| gen_exception(dc, EXCP_DEBUG); |
| dc->is_jmp = DISAS_UPDATE; |
| /* The address covered by the breakpoint must be included in |
| [tb->pc, tb->pc + tb->size) in order to for it to be |
| properly cleared -- thus we increment the PC here so that |
| the logic setting tb->size below does the right thing. */ |
| dc->pc += 4; |
| break; |
| } |
| |
| if (num_insns == max_insns && (tb->cflags & CF_LAST_IO)) { |
| gen_io_start(); |
| } |
| dc->ppc = dc->pc - 4; |
| dc->npc = dc->pc + 4; |
| tcg_gen_movi_tl(cpu_ppc, dc->ppc); |
| tcg_gen_movi_tl(cpu_npc, dc->npc); |
| disas_openrisc_insn(dc, cpu); |
| dc->pc = dc->npc; |
| /* delay slot */ |
| if (dc->delayed_branch) { |
| dc->delayed_branch--; |
| if (!dc->delayed_branch) { |
| dc->tb_flags &= ~D_FLAG; |
| gen_sync_flags(dc); |
| tcg_gen_mov_tl(cpu_pc, jmp_pc); |
| tcg_gen_mov_tl(cpu_npc, jmp_pc); |
| tcg_gen_movi_tl(jmp_pc, 0); |
| tcg_gen_exit_tb(0); |
| dc->is_jmp = DISAS_JUMP; |
| break; |
| } |
| } |
| } while (!dc->is_jmp |
| && !tcg_op_buf_full() |
| && !cs->singlestep_enabled |
| && !singlestep |
| && (dc->pc < next_page_start) |
| && num_insns < max_insns); |
| |
| if (tb->cflags & CF_LAST_IO) { |
| gen_io_end(); |
| } |
| if (dc->is_jmp == DISAS_NEXT) { |
| dc->is_jmp = DISAS_UPDATE; |
| tcg_gen_movi_tl(cpu_pc, dc->pc); |
| } |
| if (unlikely(cs->singlestep_enabled)) { |
| if (dc->is_jmp == DISAS_NEXT) { |
| tcg_gen_movi_tl(cpu_pc, dc->pc); |
| } |
| gen_exception(dc, EXCP_DEBUG); |
| } else { |
| switch (dc->is_jmp) { |
| case DISAS_NEXT: |
| gen_goto_tb(dc, 0, dc->pc); |
| break; |
| default: |
| case DISAS_JUMP: |
| break; |
| case DISAS_UPDATE: |
| /* indicate that the hash table must be used |
| to find the next TB */ |
| tcg_gen_exit_tb(0); |
| break; |
| case DISAS_TB_JUMP: |
| /* nothing more to generate */ |
| break; |
| } |
| } |
| |
| gen_tb_end(tb, num_insns); |
| |
| tb->size = dc->pc - pc_start; |
| tb->icount = num_insns; |
| |
| #ifdef DEBUG_DISAS |
| if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM) |
| && qemu_log_in_addr_range(pc_start)) { |
| qemu_log("\n"); |
| log_target_disas(cs, pc_start, dc->pc - pc_start, 0); |
| qemu_log("\nisize=%d osize=%d\n", |
| dc->pc - pc_start, tcg_op_buf_count()); |
| } |
| #endif |
| } |
| |
| void openrisc_cpu_dump_state(CPUState *cs, FILE *f, |
| fprintf_function cpu_fprintf, |
| int flags) |
| { |
| OpenRISCCPU *cpu = OPENRISC_CPU(cs); |
| CPUOpenRISCState *env = &cpu->env; |
| int i; |
| |
| cpu_fprintf(f, "PC=%08x\n", env->pc); |
| for (i = 0; i < 32; ++i) { |
| cpu_fprintf(f, "R%02d=%08x%c", i, env->gpr[i], |
| (i % 4) == 3 ? '\n' : ' '); |
| } |
| } |
| |
| void restore_state_to_opc(CPUOpenRISCState *env, TranslationBlock *tb, |
| target_ulong *data) |
| { |
| env->pc = data[0]; |
| } |
