diff options
| -rw-r--r-- | target/openrisc/Makefile.objs | 9 | ||||
| -rw-r--r-- | target/openrisc/fpu_helper.c | 252 | ||||
| -rw-r--r-- | target/openrisc/helper.h | 25 | ||||
| -rw-r--r-- | target/openrisc/insns.decode | 189 | ||||
| -rw-r--r-- | target/openrisc/translate.c | 1726 |
5 files changed, 1050 insertions, 1151 deletions
diff --git a/target/openrisc/Makefile.objs b/target/openrisc/Makefile.objs index 918b1c6..1b98a91 100644 --- a/target/openrisc/Makefile.objs +++ b/target/openrisc/Makefile.objs @@ -3,3 +3,12 @@ obj-y += cpu.o exception.o interrupt.o mmu.o translate.o obj-y += exception_helper.o fpu_helper.o \ interrupt_helper.o mmu_helper.o sys_helper.o obj-y += gdbstub.o + +DECODETREE = $(SRC_PATH)/scripts/decodetree.py + +target/openrisc/decode.inc.c: \ + $(SRC_PATH)/target/openrisc/insns.decode $(DECODETREE) + $(call quiet-command,\ + $(PYTHON) $(DECODETREE) -o $@ $<, "GEN", $(TARGET_DIR)$@) + +target/openrisc/translate.o: target/openrisc/decode.inc.c diff --git a/target/openrisc/fpu_helper.c b/target/openrisc/fpu_helper.c index 977a1e8..265ce13 100644 --- a/target/openrisc/fpu_helper.c +++ b/target/openrisc/fpu_helper.c @@ -24,121 +24,70 @@ #include "exception.h" #include "fpu/softfloat.h" -static inline uint32_t ieee_ex_to_openrisc(OpenRISCCPU *cpu, int fexcp) +static int ieee_ex_to_openrisc(int fexcp) { int ret = 0; - if (fexcp) { - if (fexcp & float_flag_invalid) { - cpu->env.fpcsr |= FPCSR_IVF; - ret = 1; - } - if (fexcp & float_flag_overflow) { - cpu->env.fpcsr |= FPCSR_OVF; - ret = 1; - } - if (fexcp & float_flag_underflow) { - cpu->env.fpcsr |= FPCSR_UNF; - ret = 1; - } - if (fexcp & float_flag_divbyzero) { - cpu->env.fpcsr |= FPCSR_DZF; - ret = 1; - } - if (fexcp & float_flag_inexact) { - cpu->env.fpcsr |= FPCSR_IXF; - ret = 1; - } + if (fexcp & float_flag_invalid) { + ret |= FPCSR_IVF; + } + if (fexcp & float_flag_overflow) { + ret |= FPCSR_OVF; + } + if (fexcp & float_flag_underflow) { + ret |= FPCSR_UNF; + } + if (fexcp & float_flag_divbyzero) { + ret |= FPCSR_DZF; + } + if (fexcp & float_flag_inexact) { + ret |= FPCSR_IXF; } - return ret; } -static inline void update_fpcsr(OpenRISCCPU *cpu) +void HELPER(update_fpcsr)(CPUOpenRISCState *env) { - int tmp = ieee_ex_to_openrisc(cpu, - get_float_exception_flags(&cpu->env.fp_status)); - - SET_FP_CAUSE(cpu->env.fpcsr, tmp); - if ((GET_FP_ENABLE(cpu->env.fpcsr) & tmp) && - (cpu->env.fpcsr & FPCSR_FPEE)) { - helper_exception(&cpu->env, EXCP_FPE); - } else { - UPDATE_FP_FLAGS(cpu->env.fpcsr, tmp); + int tmp = get_float_exception_flags(&env->fp_status); + + if (tmp) { + set_float_exception_flags(0, &env->fp_status); + tmp = ieee_ex_to_openrisc(tmp); + if (tmp) { + env->fpcsr |= tmp; + if (env->fpcsr & FPCSR_FPEE) { + helper_exception(env, EXCP_FPE); + } + } } } uint64_t HELPER(itofd)(CPUOpenRISCState *env, uint64_t val) { - uint64_t itofd; - OpenRISCCPU *cpu = openrisc_env_get_cpu(env); - - set_float_exception_flags(0, &cpu->env.fp_status); - itofd = int32_to_float64(val, &cpu->env.fp_status); - update_fpcsr(cpu); - - return itofd; + return int32_to_float64(val, &env->fp_status); } uint32_t HELPER(itofs)(CPUOpenRISCState *env, uint32_t val) { - uint32_t itofs; - OpenRISCCPU *cpu = openrisc_env_get_cpu(env); - - set_float_exception_flags(0, &cpu->env.fp_status); - itofs = int32_to_float32(val, &cpu->env.fp_status); - update_fpcsr(cpu); - - return itofs; + return int32_to_float32(val, &env->fp_status); } uint64_t HELPER(ftoid)(CPUOpenRISCState *env, uint64_t val) { - uint64_t ftoid; - OpenRISCCPU *cpu = openrisc_env_get_cpu(env); - - set_float_exception_flags(0, &cpu->env.fp_status); - ftoid = float32_to_int64(val, &cpu->env.fp_status); - update_fpcsr(cpu); - - return ftoid; + return float32_to_int64(val, &env->fp_status); } uint32_t HELPER(ftois)(CPUOpenRISCState *env, uint32_t val) { - uint32_t ftois; - OpenRISCCPU *cpu = openrisc_env_get_cpu(env); - - set_float_exception_flags(0, &cpu->env.fp_status); - ftois = float32_to_int32(val, &cpu->env.fp_status); - update_fpcsr(cpu); - - return ftois; + return float32_to_int32(val, &env->fp_status); } -#define FLOAT_OP(name, p) void helper_float_##_##p(void) - #define FLOAT_CALC(name) \ uint64_t helper_float_ ## name ## _d(CPUOpenRISCState *env, \ uint64_t fdt0, uint64_t fdt1) \ -{ \ - uint64_t result; \ - OpenRISCCPU *cpu = openrisc_env_get_cpu(env); \ - set_float_exception_flags(0, &cpu->env.fp_status); \ - result = float64_ ## name(fdt0, fdt1, &cpu->env.fp_status); \ - update_fpcsr(cpu); \ - return result; \ -} \ - \ +{ return float64_ ## name(fdt0, fdt1, &env->fp_status); } \ uint32_t helper_float_ ## name ## _s(CPUOpenRISCState *env, \ uint32_t fdt0, uint32_t fdt1) \ -{ \ - uint32_t result; \ - OpenRISCCPU *cpu = openrisc_env_get_cpu(env); \ - set_float_exception_flags(0, &cpu->env.fp_status); \ - result = float32_ ## name(fdt0, fdt1, &cpu->env.fp_status); \ - update_fpcsr(cpu); \ - return result; \ -} \ +{ return float32_ ## name(fdt0, fdt1, &env->fp_status); } FLOAT_CALC(add) FLOAT_CALC(sub) @@ -151,132 +100,29 @@ FLOAT_CALC(rem) uint64_t helper_float_madd_d(CPUOpenRISCState *env, uint64_t a, uint64_t b, uint64_t c) { - OpenRISCCPU *cpu = openrisc_env_get_cpu(env); - uint64_t result; - set_float_exception_flags(0, &cpu->env.fp_status); - /* Note that or1ksim doesn't use merged operation. */ - result = float64_mul(b, c, &cpu->env.fp_status); - result = float64_add(result, a, &cpu->env.fp_status); - update_fpcsr(cpu); - return result; + /* Note that or1ksim doesn't use fused operation. */ + b = float64_mul(b, c, &env->fp_status); + return float64_add(a, b, &env->fp_status); } uint32_t helper_float_madd_s(CPUOpenRISCState *env, uint32_t a, uint32_t b, uint32_t c) { - OpenRISCCPU *cpu = openrisc_env_get_cpu(env); - uint32_t result; - set_float_exception_flags(0, &cpu->env.fp_status); - /* Note that or1ksim doesn't use merged operation. */ - result = float32_mul(b, c, &cpu->env.fp_status); - result = float32_add(result, a, &cpu->env.fp_status); - update_fpcsr(cpu); - return result; + /* Note that or1ksim doesn't use fused operation. */ + b = float32_mul(b, c, &env->fp_status); + return float32_add(a, b, &env->fp_status); } -#define FLOAT_CMP(name) \ -uint64_t helper_float_ ## name ## _d(CPUOpenRISCState *env, \ - uint64_t fdt0, uint64_t fdt1) \ -{ \ - int res; \ - OpenRISCCPU *cpu = openrisc_env_get_cpu(env); \ - set_float_exception_flags(0, &cpu->env.fp_status); \ - res = float64_ ## name(fdt0, fdt1, &cpu->env.fp_status); \ - update_fpcsr(cpu); \ - return res; \ -} \ - \ -uint32_t helper_float_ ## name ## _s(CPUOpenRISCState *env, \ - uint32_t fdt0, uint32_t fdt1)\ -{ \ - int res; \ - OpenRISCCPU *cpu = openrisc_env_get_cpu(env); \ - set_float_exception_flags(0, &cpu->env.fp_status); \ - res = float32_ ## name(fdt0, fdt1, &cpu->env.fp_status); \ - update_fpcsr(cpu); \ - return res; \ -} +#define FLOAT_CMP(name, impl) \ +target_ulong helper_float_ ## name ## _d(CPUOpenRISCState *env, \ + uint64_t fdt0, uint64_t fdt1) \ +{ return float64_ ## impl(fdt0, fdt1, &env->fp_status); } \ +target_ulong helper_float_ ## name ## _s(CPUOpenRISCState *env, \ + uint32_t fdt0, uint32_t fdt1) \ +{ return float32_ ## impl(fdt0, fdt1, &env->fp_status); } -FLOAT_CMP(le) -FLOAT_CMP(eq) -FLOAT_CMP(lt) +FLOAT_CMP(le, le) +FLOAT_CMP(lt, lt) +FLOAT_CMP(eq, eq_quiet) #undef FLOAT_CMP - - -#define FLOAT_CMPNE(name) \ -uint64_t helper_float_ ## name ## _d(CPUOpenRISCState *env, \ - uint64_t fdt0, uint64_t fdt1) \ -{ \ - int res; \ - OpenRISCCPU *cpu = openrisc_env_get_cpu(env); \ - set_float_exception_flags(0, &cpu->env.fp_status); \ - res = !float64_eq_quiet(fdt0, fdt1, &cpu->env.fp_status); \ - update_fpcsr(cpu); \ - return res; \ -} \ - \ -uint32_t helper_float_ ## name ## _s(CPUOpenRISCState *env, \ - uint32_t fdt0, uint32_t fdt1) \ -{ \ - int res; \ - OpenRISCCPU *cpu = openrisc_env_get_cpu(env); \ - set_float_exception_flags(0, &cpu->env.fp_status); \ - res = !float32_eq_quiet(fdt0, fdt1, &cpu->env.fp_status); \ - update_fpcsr(cpu); \ - return res; \ -} - -FLOAT_CMPNE(ne) -#undef FLOAT_CMPNE - -#define FLOAT_CMPGT(name) \ -uint64_t helper_float_ ## name ## _d(CPUOpenRISCState *env, \ - uint64_t fdt0, uint64_t fdt1) \ -{ \ - int res; \ - OpenRISCCPU *cpu = openrisc_env_get_cpu(env); \ - set_float_exception_flags(0, &cpu->env.fp_status); \ - res = !float64_le(fdt0, fdt1, &cpu->env.fp_status); \ - update_fpcsr(cpu); \ - return res; \ -} \ - \ -uint32_t helper_float_ ## name ## _s(CPUOpenRISCState *env, \ - uint32_t fdt0, uint32_t fdt1) \ -{ \ - int res; \ - OpenRISCCPU *cpu = openrisc_env_get_cpu(env); \ - set_float_exception_flags(0, &cpu->env.fp_status); \ - res = !float32_le(fdt0, fdt1, &cpu->env.fp_status); \ - update_fpcsr(cpu); \ - return res; \ -} -FLOAT_CMPGT(gt) -#undef FLOAT_CMPGT - -#define FLOAT_CMPGE(name) \ -uint64_t helper_float_ ## name ## _d(CPUOpenRISCState *env, \ - uint64_t fdt0, uint64_t fdt1) \ -{ \ - int res; \ - OpenRISCCPU *cpu = openrisc_env_get_cpu(env); \ - set_float_exception_flags(0, &cpu->env.fp_status); \ - res = !float64_lt(fdt0, fdt1, &cpu->env.fp_status); \ - update_fpcsr(cpu); \ - return res; \ -} \ - \ -uint32_t helper_float_ ## name ## _s(CPUOpenRISCState *env, \ - uint32_t fdt0, uint32_t fdt1) \ -{ \ - int res; \ - OpenRISCCPU *cpu = openrisc_env_get_cpu(env); \ - set_float_exception_flags(0, &cpu->env.fp_status); \ - res = !float32_lt(fdt0, fdt1, &cpu->env.fp_status); \ - update_fpcsr(cpu); \ - return res; \ -} - -FLOAT_CMPGE(ge) -#undef FLOAT_CMPGE diff --git a/target/openrisc/helper.h b/target/openrisc/helper.h index 4fd1a6b..e37dabc 100644 --- a/target/openrisc/helper.h +++ b/target/openrisc/helper.h @@ -24,17 +24,19 @@ DEF_HELPER_FLAGS_1(ove_ov, TCG_CALL_NO_WG, void, env) DEF_HELPER_FLAGS_1(ove_cyov, TCG_CALL_NO_WG, void, env) /* float */ -DEF_HELPER_FLAGS_2(itofd, TCG_CALL_NO_WG, i64, env, i64) -DEF_HELPER_FLAGS_2(itofs, TCG_CALL_NO_WG, i32, env, i32) -DEF_HELPER_FLAGS_2(ftoid, TCG_CALL_NO_WG, i64, env, i64) -DEF_HELPER_FLAGS_2(ftois, TCG_CALL_NO_WG, i32, env, i32) +DEF_HELPER_FLAGS_1(update_fpcsr, TCG_CALL_NO_WG, void, env) -DEF_HELPER_FLAGS_4(float_madd_s, TCG_CALL_NO_WG, i32, env, i32, i32, i32) -DEF_HELPER_FLAGS_4(float_madd_d, TCG_CALL_NO_WG, i64, env, i64, i64, i64) +DEF_HELPER_FLAGS_2(itofd, TCG_CALL_NO_RWG, i64, env, i64) +DEF_HELPER_FLAGS_2(itofs, TCG_CALL_NO_RWG, i32, env, i32) +DEF_HELPER_FLAGS_2(ftoid, TCG_CALL_NO_RWG, i64, env, i64) +DEF_HELPER_FLAGS_2(ftois, TCG_CALL_NO_RWG, i32, env, i32) + +DEF_HELPER_FLAGS_4(float_madd_s, TCG_CALL_NO_RWG, i32, env, i32, i32, i32) +DEF_HELPER_FLAGS_4(float_madd_d, TCG_CALL_NO_RWG, i64, env, i64, i64, i64) #define FOP_CALC(op) \ -DEF_HELPER_FLAGS_3(float_ ## op ## _s, TCG_CALL_NO_WG, i32, env, i32, i32) \ -DEF_HELPER_FLAGS_3(float_ ## op ## _d, TCG_CALL_NO_WG, i64, env, i64, i64) +DEF_HELPER_FLAGS_3(float_ ## op ## _s, TCG_CALL_NO_RWG, i32, env, i32, i32) \ +DEF_HELPER_FLAGS_3(float_ ## op ## _d, TCG_CALL_NO_RWG, i64, env, i64, i64) FOP_CALC(add) FOP_CALC(sub) FOP_CALC(mul) @@ -43,14 +45,11 @@ FOP_CALC(rem) #undef FOP_CALC #define FOP_CMP(op) \ -DEF_HELPER_FLAGS_3(float_ ## op ## _s, TCG_CALL_NO_WG, i32, env, i32, i32) \ -DEF_HELPER_FLAGS_3(float_ ## op ## _d, TCG_CALL_NO_WG, i64, env, i64, i64) +DEF_HELPER_FLAGS_3(float_ ## op ## _s, TCG_CALL_NO_RWG, tl, env, i32, i32) \ +DEF_HELPER_FLAGS_3(float_ ## op ## _d, TCG_CALL_NO_RWG, tl, env, i64, i64) FOP_CMP(eq) FOP_CMP(lt) FOP_CMP(le) -FOP_CMP(ne) -FOP_CMP(gt) -FOP_CMP(ge) #undef FOP_CMP /* interrupt */ diff --git a/target/openrisc/insns.decode b/target/openrisc/insns.decode new file mode 100644 index 0000000..dad68c8 --- /dev/null +++ b/target/openrisc/insns.decode @@ -0,0 +1,189 @@ +# +# OpenRISC instruction decode definitions. +# +# Copyright (c) 2018 Richard Henderson <rth@twiddle.net> +# +# 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/>. +# + +&dab d a b +&da d a +&ab a b +&dal d a l +&ai a i + +#### +# System Instructions +#### + +l_sys 001000 0000000000 k:16 +l_trap 001000 0100000000 k:16 +l_msync 001000 1000000000 00000000 00000000 +l_psync 001000 1010000000 00000000 00000000 +l_csync 001000 1100000000 00000000 00000000 + +l_rfe 001001 ----- ----- -------- -------- + +#### +# Branch Instructions +#### + +l_j 000000 n:s26 +l_jal 000001 n:s26 +l_bnf 000011 n:s26 +l_bf 000100 n:s26 + +l_jr 010001 ---------- b:5 ----------- +l_jalr 010010 ---------- b:5 ----------- + +#### +# Memory Instructions +#### + +&load d a i +@load ...... d:5 a:5 i:s16 &load + +%store_i 21:s5 0:11 +&store a b i +@store ...... ..... a:5 b:5 ........... &store i=%store_i + +l_lwa 011011 ..... ..... ........ ........ @load +l_lwz 100001 ..... ..... ........ ........ @load +l_lws 100010 ..... ..... ........ ........ @load +l_lbz 100011 ..... ..... ........ ........ @load +l_lbs 100100 ..... ..... ........ ........ @load +l_lhz 100101 ..... ..... ........ ........ @load +l_lhs 100110 ..... ..... ........ ........ @load + +l_swa 110011 ..... ..... ..... ........... @store +l_sw 110101 ..... ..... ..... ........... @store +l_sb 110110 ..... ..... ..... ........... @store +l_sh 110111 ..... ..... ..... ........... @store + +#### +# Immediate Operand Instructions +#### + +%mtspr_k 21:5 0:11 + +&rri d a i +&rrk d a k +@rri ...... d:5 a:5 i:s16 &rri +@rrk ...... d:5 a:5 k:16 &rrk + +l_nop 000101 01--- ----- k:16 + +l_addi 100111 ..... ..... ........ ........ @rri +l_addic 101000 ..... ..... ........ ........ @rri +l_andi 101001 ..... ..... ........ ........ @rrk +l_ori 101010 ..... ..... ........ ........ @rrk +l_xori 101011 ..... ..... ........ ........ @rri +l_muli 101100 ..... ..... ........ ........ @rri + +l_mfspr 101101 ..... ..... ........ ........ @rrk +l_mtspr 110000 ..... a:5 b:5 ........... k=%mtspr_k + +l_maci 010011 ----- a:5 i:s16 + +l_movhi 000110 d:5 ----0 k:16 +l_macrc 000110 d:5 ----1 00000000 00000000 + +#### +# Arithmetic Instructions +#### + +l_exths 111000 d:5 a:5 ----- - 0000 -- 1100 +l_extbs 111000 d:5 a:5 ----- - 0001 -- 1100 +l_exthz 111000 d:5 a:5 ----- - 0010 -- 1100 +l_extbz 111000 d:5 a:5 ----- - 0011 -- 1100 + +l_add 111000 d:5 a:5 b:5 - 00 ---- 0000 +l_addc 111000 d:5 a:5 b:5 - 00 ---- 0001 +l_sub 111000 d:5 a:5 b:5 - 00 ---- 0010 +l_and 111000 d:5 a:5 b:5 - 00 ---- 0011 +l_or 111000 d:5 a:5 b:5 - 00 ---- 0100 +l_xor 111000 d:5 a:5 b:5 - 00 ---- 0101 +l_cmov 111000 d:5 a:5 b:5 - 00 ---- 1110 +l_ff1 111000 d:5 a:5 ----- - 00 ---- 1111 +l_fl1 111000 d:5 a:5 ----- - 01 ---- 1111 + +l_sll 111000 d:5 a:5 b:5 - 0000 -- 1000 +l_srl 111000 d:5 a:5 b:5 - 0001 -- 1000 +l_sra 111000 d:5 a:5 b:5 - 0010 -- 1000 +l_ror 111000 d:5 a:5 b:5 - 0011 -- 1000 + +l_mul 111000 d:5 a:5 b:5 - 11 ---- 0110 +l_mulu 111000 d:5 a:5 b:5 - 11 ---- 1011 +l_div 111000 d:5 a:5 b:5 - 11 ---- 1001 +l_divu 111000 d:5 a:5 b:5 - 11 ---- 1010 + +l_muld 111000 ----- a:5 b:5 - 11 ---- 0111 +l_muldu 111000 ----- a:5 b:5 - 11 ---- 1100 + +l_mac 110001 ----- a:5 b:5 ------- 0001 +l_macu 110001 ----- a:5 b:5 ------- 0011 +l_msb 110001 ----- a:5 b:5 ------- 0010 +l_msbu 110001 ----- a:5 b:5 ------- 0100 + +l_slli 101110 d:5 a:5 -------- 00 l:6 +l_srli 101110 d:5 a:5 -------- 01 l:6 +l_srai 101110 d:5 a:5 -------- 10 l:6 +l_rori 101110 d:5 a:5 -------- 11 l:6 + +#### +# Compare Instructions +#### + +l_sfeq 111001 00000 a:5 b:5 ----------- +l_sfne 111001 00001 a:5 b:5 ----------- +l_sfgtu 111001 00010 a:5 b:5 ----------- +l_sfgeu 111001 00011 a:5 b:5 ----------- +l_sfltu 111001 00100 a:5 b:5 ----------- +l_sfleu 111001 00101 a:5 b:5 ----------- +l_sfgts 111001 01010 a:5 b:5 ----------- +l_sfges 111001 01011 a:5 b:5 ----------- +l_sflts 111001 01100 a:5 b:5 ----------- +l_sfles 111001 01101 a:5 b:5 ----------- + +l_sfeqi 101111 00000 a:5 i:s16 +l_sfnei 101111 00001 a:5 i:s16 +l_sfgtui 101111 00010 a:5 i:s16 +l_sfgeui 101111 00011 a:5 i:s16 +l_sfltui 101111 00100 a:5 i:s16 +l_sfleui 101111 00101 a:5 i:s16 +l_sfgtsi 101111 01010 a:5 i:s16 +l_sfgesi 101111 01011 a:5 i:s16 +l_sfltsi 101111 01100 a:5 i:s16 +l_sflesi 101111 01101 a:5 i:s16 + +#### +# FP Instructions +#### + +lf_add_s 110010 d:5 a:5 b:5 --- 00000000 +lf_sub_s 110010 d:5 a:5 b:5 --- 00000001 +lf_mul_s 110010 d:5 a:5 b:5 --- 00000010 +lf_div_s 110010 d:5 a:5 b:5 --- 00000011 +lf_rem_s 110010 d:5 a:5 b:5 --- 00000110 +lf_madd_s 110010 d:5 a:5 b:5 --- 00000111 + +lf_itof_s 110010 d:5 a:5 00000 --- 00000100 +lf_ftoi_s 110010 d:5 a:5 00000 --- 00000101 + +lf_sfeq_s 110010 ----- a:5 b:5 --- 00001000 +lf_sfne_s 110010 ----- a:5 b:5 --- 00001001 +lf_sfgt_s 110010 ----- a:5 b:5 --- 00001010 +lf_sfge_s 110010 ----- a:5 b:5 --- 00001011 +lf_sflt_s 110010 ----- a:5 b:5 --- 00001100 +lf_sfle_s 110010 ----- a:5 b:5 --- 00001101 diff --git a/target/openrisc/translate.c b/target/openrisc/translate.c index 7cf29cd..e7c96ca 100644 --- a/target/openrisc/translate.c +++ b/target/openrisc/translate.c @@ -31,6 +31,7 @@ #include "exec/helper-proto.h" #include "exec/helper-gen.h" +#include "exec/gen-icount.h" #include "trace-tcg.h" #include "exec/log.h" @@ -51,6 +52,9 @@ typedef struct DisasContext { uint32_t delayed_branch; } DisasContext; +/* Include the auto-generated decoder. */ +#include "decode.inc.c" + static TCGv cpu_sr; static TCGv cpu_R[32]; static TCGv cpu_R0; @@ -65,7 +69,6 @@ static TCGv cpu_lock_value; static TCGv_i32 fpcsr; static TCGv_i64 cpu_mac; /* MACHI:MACLO */ static TCGv_i32 cpu_dflag; -#include "exec/gen-icount.h" void openrisc_translate_init(void) { @@ -190,52 +193,6 @@ static void gen_goto_tb(DisasContext *dc, int n, target_ulong dest) } } -static void gen_jump(DisasContext *dc, int32_t n26, uint32_t reg, uint32_t op0) -{ - target_ulong tmp_pc = dc->base.pc_next + n26 * 4; - - 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->base.pc_next + 8); - /* Optimize jal being used to load the PC for PIC. */ - if (tmp_pc == dc->base.pc_next + 8) { - return; - } - tcg_gen_movi_tl(jmp_pc, tmp_pc); - break; - case 0x03: /* l.bnf */ - case 0x04: /* l.bf */ - { - TCGv t_next = tcg_const_tl(dc->base.pc_next + 8); - TCGv t_true = tcg_const_tl(tmp_pc); - TCGv t_zero = tcg_const_tl(0); - - tcg_gen_movcond_tl(op0 == 0x03 ? TCG_COND_EQ : TCG_COND_NE, - jmp_pc, cpu_sr_f, t_zero, t_true, t_next); - - tcg_temp_free(t_next); - tcg_temp_free(t_true); - tcg_temp_free(t_zero); - } - 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->base.pc_next + 8)); - tcg_gen_mov_tl(jmp_pc, cpu_R[reg]); - break; - default: - gen_illegal_exception(dc); - break; - } - - dc->delayed_branch = 2; -} - static void gen_ove_cy(DisasContext *dc) { if (dc->tb_flags & SR_OVE) { @@ -498,24 +455,350 @@ static void gen_msbu(DisasContext *dc, TCGv srca, TCGv srcb) gen_ove_cy(dc); } -static void gen_lwa(DisasContext *dc, TCGv rd, TCGv ra, int32_t ofs) +static bool trans_l_add(DisasContext *dc, arg_dab *a, uint32_t insn) { - TCGv ea = tcg_temp_new(); + LOG_DIS("l.add r%d, r%d, r%d\n", a->d, a->a, a->b); + check_r0_write(a->d); + gen_add(dc, cpu_R[a->d], cpu_R[a->a], cpu_R[a->b]); + return true; +} + +static bool trans_l_addc(DisasContext *dc, arg_dab *a, uint32_t insn) +{ + LOG_DIS("l.addc r%d, r%d, r%d\n", a->d, a->a, a->b); + check_r0_write(a->d); + gen_addc(dc, cpu_R[a->d], cpu_R[a->a], cpu_R[a->b]); + return true; +} - tcg_gen_addi_tl(ea, ra, ofs); - tcg_gen_qemu_ld_tl(rd, ea, dc->mem_idx, MO_TEUL); +static bool trans_l_sub(DisasContext *dc, arg_dab *a, uint32_t insn) +{ + LOG_DIS("l.sub r%d, r%d, r%d\n", a->d, a->a, a->b); + check_r0_write(a->d); + gen_sub(dc, cpu_R[a->d], cpu_R[a->a], cpu_R[a->b]); + return true; +} + +static bool trans_l_and(DisasContext *dc, arg_dab *a, uint32_t insn) +{ + LOG_DIS("l.and r%d, r%d, r%d\n", a->d, a->a, a->b); + check_r0_write(a->d); + tcg_gen_and_tl(cpu_R[a->d], cpu_R[a->a], cpu_R[a->b]); + return true; +} + +static bool trans_l_or(DisasContext *dc, arg_dab *a, uint32_t insn) +{ + LOG_DIS("l.or r%d, r%d, r%d\n", a->d, a->a, a->b); + check_r0_write(a->d); + tcg_gen_or_tl(cpu_R[a->d], cpu_R[a->a], cpu_R[a->b]); + return true; +} + +static bool trans_l_xor(DisasContext *dc, arg_dab *a, uint32_t insn) +{ + LOG_DIS("l.xor r%d, r%d, r%d\n", a->d, a->a, a->b); + check_r0_write(a->d); + tcg_gen_xor_tl(cpu_R[a->d], cpu_R[a->a], cpu_R[a->b]); + return true; +} + +static bool trans_l_sll(DisasContext *dc, arg_dab *a, uint32_t insn) +{ + LOG_DIS("l.sll r%d, r%d, r%d\n", a->d, a->a, a->b); + check_r0_write(a->d); + tcg_gen_shl_tl(cpu_R[a->d], cpu_R[a->a], cpu_R[a->b]); + return true; +} + +static bool trans_l_srl(DisasContext *dc, arg_dab *a, uint32_t insn) +{ + LOG_DIS("l.srl r%d, r%d, r%d\n", a->d, a->a, a->b); + check_r0_write(a->d); + tcg_gen_shr_tl(cpu_R[a->d], cpu_R[a->a], cpu_R[a->b]); + return true; +} + +static bool trans_l_sra(DisasContext *dc, arg_dab *a, uint32_t insn) +{ + LOG_DIS("l.sra r%d, r%d, r%d\n", a->d, a->a, a->b); + check_r0_write(a->d); + tcg_gen_sar_tl(cpu_R[a->d], cpu_R[a->a], cpu_R[a->b]); + return true; +} + +static bool trans_l_ror(DisasContext *dc, arg_dab *a, uint32_t insn) +{ + LOG_DIS("l.ror r%d, r%d, r%d\n", a->d, a->a, a->b); + check_r0_write(a->d); + tcg_gen_rotr_tl(cpu_R[a->d], cpu_R[a->a], cpu_R[a->b]); + return true; +} + +static bool trans_l_exths(DisasContext *dc, arg_da *a, uint32_t insn) +{ + LOG_DIS("l.exths r%d, r%d\n", a->d, a->a); + check_r0_write(a->d); + tcg_gen_ext16s_tl(cpu_R[a->d], cpu_R[a->a]); + return true; +} + +static bool trans_l_extbs(DisasContext *dc, arg_da *a, uint32_t insn) +{ + LOG_DIS("l.extbs r%d, r%d\n", a->d, a->a); + check_r0_write(a->d); + tcg_gen_ext8s_tl(cpu_R[a->d], cpu_R[a->a]); + return true; +} + +static bool trans_l_exthz(DisasContext *dc, arg_da *a, uint32_t insn) +{ + LOG_DIS("l.exthz r%d, r%d\n", a->d, a->a); + check_r0_write(a->d); + tcg_gen_ext16u_tl(cpu_R[a->d], cpu_R[a->a]); + return true; +} + +static bool trans_l_extbz(DisasContext *dc, arg_da *a, uint32_t insn) +{ + LOG_DIS("l.extbz r%d, r%d\n", a->d, a->a); + check_r0_write(a->d); + tcg_gen_ext8u_tl(cpu_R[a->d], cpu_R[a->a]); + return true; +} + +static bool trans_l_cmov(DisasContext *dc, arg_dab *a, uint32_t insn) +{ + TCGv zero; + LOG_DIS("l.cmov r%d, r%d, r%d\n", a->d, a->a, a->b); + + check_r0_write(a->d); + zero = tcg_const_tl(0); + tcg_gen_movcond_tl(TCG_COND_NE, cpu_R[a->d], cpu_sr_f, zero, + cpu_R[a->a], cpu_R[a->b]); + tcg_temp_free(zero); + return true; +} + +static bool trans_l_ff1(DisasContext *dc, arg_da *a, uint32_t insn) +{ + LOG_DIS("l.ff1 r%d, r%d\n", a->d, a->a); + + check_r0_write(a->d); + tcg_gen_ctzi_tl(cpu_R[a->d], cpu_R[a->a], -1); + tcg_gen_addi_tl(cpu_R[a->d], cpu_R[a->d], 1); + return true; +} + +static bool trans_l_fl1(DisasContext *dc, arg_da *a, uint32_t insn) +{ + LOG_DIS("l.fl1 r%d, r%d\n", a->d, a->a); + + check_r0_write(a->d); + tcg_gen_clzi_tl(cpu_R[a->d], cpu_R[a->a], TARGET_LONG_BITS); + tcg_gen_subfi_tl(cpu_R[a->d], TARGET_LONG_BITS, cpu_R[a->d]); + return true; +} + +static bool trans_l_mul(DisasContext *dc, arg_dab *a, uint32_t insn) +{ + LOG_DIS("l.mul r%d, r%d, r%d\n", a->d, a->a, a->b); + + check_r0_write(a->d); + gen_mul(dc, cpu_R[a->d], cpu_R[a->a], cpu_R[a->b]); + return true; +} + +static bool trans_l_mulu(DisasContext *dc, arg_dab *a, uint32_t insn) +{ + LOG_DIS("l.mulu r%d, r%d, r%d\n", a->d, a->a, a->b); + + check_r0_write(a->d); + gen_mulu(dc, cpu_R[a->d], cpu_R[a->a], cpu_R[a->b]); + return true; +} + +static bool trans_l_div(DisasContext *dc, arg_dab *a, uint32_t insn) +{ + LOG_DIS("l.div r%d, r%d, r%d\n", a->d, a->a, a->b); + + check_r0_write(a->d); + gen_div(dc, cpu_R[a->d], cpu_R[a->a], cpu_R[a->b]); + return true; +} + +static bool trans_l_divu(DisasContext *dc, arg_dab *a, uint32_t insn) +{ + LOG_DIS("l.divu r%d, r%d, r%d\n", a->d, a->a, a->b); + + check_r0_write(a->d); + gen_divu(dc, cpu_R[a->d], cpu_R[a->a], cpu_R[a->b]); + return true; +} + +static bool trans_l_muld(DisasContext *dc, arg_ab *a, uint32_t insn) +{ + LOG_DIS("l.muld r%d, r%d\n", a->a, a->b); + gen_muld(dc, cpu_R[a->a], cpu_R[a->b]); + return true; +} + +static bool trans_l_muldu(DisasContext *dc, arg_ab *a, uint32_t insn) +{ + LOG_DIS("l.muldu r%d, r%d\n", a->a, a->b); + gen_muldu(dc, cpu_R[a->a], cpu_R[a->b]); + return true; +} + +static bool trans_l_j(DisasContext *dc, arg_l_j *a, uint32_t insn) +{ + target_ulong tmp_pc = dc->base.pc_next + a->n * 4; + + LOG_DIS("l.j %d\n", a->n); + tcg_gen_movi_tl(jmp_pc, tmp_pc); + dc->delayed_branch = 2; + return true; +} + +static bool trans_l_jal(DisasContext *dc, arg_l_jal *a, uint32_t insn) +{ + target_ulong tmp_pc = dc->base.pc_next + a->n * 4; + target_ulong ret_pc = dc->base.pc_next + 8; + + LOG_DIS("l.jal %d\n", a->n); + tcg_gen_movi_tl(cpu_R[9], ret_pc); + /* Optimize jal being used to load the PC for PIC. */ + if (tmp_pc != ret_pc) { + tcg_gen_movi_tl(jmp_pc, tmp_pc); + dc->delayed_branch = 2; + } + return true; +} + +static void do_bf(DisasContext *dc, arg_l_bf *a, TCGCond cond) +{ + target_ulong tmp_pc = dc->base.pc_next + a->n * 4; + TCGv t_next = tcg_const_tl(dc->base.pc_next + 8); + TCGv t_true = tcg_const_tl(tmp_pc); + TCGv t_zero = tcg_const_tl(0); + + tcg_gen_movcond_tl(cond, jmp_pc, cpu_sr_f, t_zero, t_true, t_next); + + tcg_temp_free(t_next); + tcg_temp_free(t_true); + tcg_temp_free(t_zero); + dc->delayed_branch = 2; +} + +static bool trans_l_bf(DisasContext *dc, arg_l_bf *a, uint32_t insn) +{ + LOG_DIS("l.bf %d\n", a->n); + do_bf(dc, a, TCG_COND_NE); + return true; +} + +static bool trans_l_bnf(DisasContext *dc, arg_l_bf *a, uint32_t insn) +{ + LOG_DIS("l.bnf %d\n", a->n); + do_bf(dc, a, TCG_COND_EQ); + return true; +} + +static bool trans_l_jr(DisasContext *dc, arg_l_jr *a, uint32_t insn) +{ + LOG_DIS("l.jr r%d\n", a->b); + tcg_gen_mov_tl(jmp_pc, cpu_R[a->b]); + dc->delayed_branch = 2; + return true; +} + +static bool trans_l_jalr(DisasContext *dc, arg_l_jalr *a, uint32_t insn) +{ + LOG_DIS("l.jalr r%d\n", a->b); + tcg_gen_mov_tl(jmp_pc, cpu_R[a->b]); + tcg_gen_movi_tl(cpu_R[9], dc->base.pc_next + 8); + dc->delayed_branch = 2; + return true; +} + +static bool trans_l_lwa(DisasContext *dc, arg_load *a, uint32_t insn) +{ + TCGv ea; + + LOG_DIS("l.lwa r%d, r%d, %d\n", a->d, a->a, a->i); + + check_r0_write(a->d); + ea = tcg_temp_new(); + tcg_gen_addi_tl(ea, cpu_R[a->a], a->i); + tcg_gen_qemu_ld_tl(cpu_R[a->d], ea, dc->mem_idx, MO_TEUL); tcg_gen_mov_tl(cpu_lock_addr, ea); - tcg_gen_mov_tl(cpu_lock_value, rd); + tcg_gen_mov_tl(cpu_lock_value, cpu_R[a->d]); tcg_temp_free(ea); + return true; +} + +static void do_load(DisasContext *dc, arg_load *a, TCGMemOp mop) +{ + TCGv ea; + + check_r0_write(a->d); + ea = tcg_temp_new(); + tcg_gen_addi_tl(ea, cpu_R[a->a], a->i); + tcg_gen_qemu_ld_tl(cpu_R[a->d], ea, dc->mem_idx, mop); + tcg_temp_free(ea); +} + +static bool trans_l_lwz(DisasContext *dc, arg_load *a, uint32_t insn) +{ + LOG_DIS("l.lwz r%d, r%d, %d\n", a->d, a->a, a->i); + do_load(dc, a, MO_TEUL); + return true; +} + +static bool trans_l_lws(DisasContext *dc, arg_load *a, uint32_t insn) +{ + LOG_DIS("l.lws r%d, r%d, %d\n", a->d, a->a, a->i); + do_load(dc, a, MO_TESL); + return true; +} + +static bool trans_l_lbz(DisasContext *dc, arg_load *a, uint32_t insn) +{ + LOG_DIS("l.lbz r%d, r%d, %d\n", a->d, a->a, a->i); + do_load(dc, a, MO_UB); + return true; +} + +static bool trans_l_lbs(DisasContext *dc, arg_load *a, uint32_t insn) +{ + LOG_DIS("l.lbs r%d, r%d, %d\n", a->d, a->a, a->i); + do_load(dc, a, MO_SB); + return true; +} + +static bool trans_l_lhz(DisasContext *dc, arg_load *a, uint32_t insn) +{ + LOG_DIS("l.lhz r%d, r%d, %d\n", a->d, a->a, a->i); + do_load(dc, a, MO_TEUW); + return true; +} + +static bool trans_l_lhs(DisasContext *dc, arg_load *a, uint32_t insn) +{ + LOG_DIS("l.lhs r%d, r%d, %d\n", a->d, a->a, a->i); + do_load(dc, a, MO_TESW); + return true; } -static void gen_swa(DisasContext *dc, int b, TCGv ra, int32_t ofs) +static bool trans_l_swa(DisasContext *dc, arg_store *a, uint32_t insn) { TCGv ea, val; TCGLabel *lab_fail, *lab_done; + LOG_DIS("l.swa r%d, r%d, %d\n", a->a, a->b, a->i); + ea = tcg_temp_new(); - tcg_gen_addi_tl(ea, ra, ofs); + tcg_gen_addi_tl(ea, cpu_R[a->a], a->i); /* For TB_FLAGS_R0_0, the branch below invalidates the temporary assigned to cpu_R[0]. Since l.swa is quite often immediately followed by a @@ -530,7 +813,7 @@ static void gen_swa(DisasContext *dc, int b, TCGv ra, int32_t ofs) val = tcg_temp_new(); tcg_gen_atomic_cmpxchg_tl(val, cpu_lock_addr, cpu_lock_value, - cpu_R[b], dc->mem_idx, MO_TEUL); + cpu_R[a->b], dc->mem_idx, MO_TEUL); tcg_gen_setcond_tl(TCG_COND_EQ, cpu_sr_f, val, cpu_lock_value); tcg_temp_free(val); @@ -541,983 +824,553 @@ static void gen_swa(DisasContext *dc, int b, TCGv ra, int32_t ofs) gen_set_label(lab_done); tcg_gen_movi_tl(cpu_lock_addr, -1); + return true; } -static void dec_calc(DisasContext *dc, uint32_t insn) +static void do_store(DisasContext *dc, arg_store *a, TCGMemOp mop) { - 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 (op1) { - case 0: - switch (op0) { - case 0x0: /* l.add */ - LOG_DIS("l.add r%d, r%d, r%d\n", rd, ra, rb); - gen_add(dc, cpu_R[rd], cpu_R[ra], cpu_R[rb]); - return; - - case 0x1: /* l.addc */ - LOG_DIS("l.addc r%d, r%d, r%d\n", rd, ra, rb); - gen_addc(dc, cpu_R[rd], cpu_R[ra], cpu_R[rb]); - return; - - case 0x2: /* l.sub */ - LOG_DIS("l.sub r%d, r%d, r%d\n", rd, ra, rb); - gen_sub(dc, cpu_R[rd], cpu_R[ra], cpu_R[rb]); - return; - - case 0x3: /* l.and */ - 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]); - return; - - case 0x4: /* l.or */ - 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]); - return; - - case 0x5: /* 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]); - return; - - case 0x8: - switch (op2) { - case 0: /* 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]); - return; - case 1: /* 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]); - return; - case 2: /* 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]); - return; - case 3: /* 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]); - return; - } - break; - - case 0xc: - switch (op2) { - case 0: /* l.exths */ - LOG_DIS("l.exths r%d, r%d\n", rd, ra); - tcg_gen_ext16s_tl(cpu_R[rd], cpu_R[ra]); - return; - case 1: /* l.extbs */ - LOG_DIS("l.extbs r%d, r%d\n", rd, ra); - tcg_gen_ext8s_tl(cpu_R[rd], cpu_R[ra]); - return; - case 2: /* l.exthz */ - LOG_DIS("l.exthz r%d, r%d\n", rd, ra); - tcg_gen_ext16u_tl(cpu_R[rd], cpu_R[ra]); - return; - case 3: /* l.extbz */ - LOG_DIS("l.extbz r%d, r%d\n", rd, ra); - tcg_gen_ext8u_tl(cpu_R[rd], cpu_R[ra]); - return; - } - break; - - case 0xd: - switch (op2) { - case 0: /* l.extws */ - LOG_DIS("l.extws r%d, r%d\n", rd, ra); - tcg_gen_ext32s_tl(cpu_R[rd], cpu_R[ra]); - return; - case 1: /* l.extwz */ - LOG_DIS("l.extwz r%d, r%d\n", rd, ra); - tcg_gen_ext32u_tl(cpu_R[rd], cpu_R[ra]); - return; - } - break; - - case 0xe: /* l.cmov */ - LOG_DIS("l.cmov r%d, r%d, r%d\n", rd, ra, rb); - { - TCGv zero = tcg_const_tl(0); - tcg_gen_movcond_tl(TCG_COND_NE, cpu_R[rd], cpu_sr_f, zero, - cpu_R[ra], cpu_R[rb]); - tcg_temp_free(zero); - } - return; - - case 0xf: /* l.ff1 */ - LOG_DIS("l.ff1 r%d, r%d, r%d\n", rd, ra, rb); - tcg_gen_ctzi_tl(cpu_R[rd], cpu_R[ra], -1); - tcg_gen_addi_tl(cpu_R[rd], cpu_R[rd], 1); - return; - } - break; - - case 1: - switch (op0) { - case 0xf: /* l.fl1 */ - LOG_DIS("l.fl1 r%d, r%d, r%d\n", rd, ra, rb); - tcg_gen_clzi_tl(cpu_R[rd], cpu_R[ra], TARGET_LONG_BITS); - tcg_gen_subfi_tl(cpu_R[rd], TARGET_LONG_BITS, cpu_R[rd]); - return; - } - break; - - case 2: - break; - - case 3: - switch (op0) { - case 0x6: /* l.mul */ - LOG_DIS("l.mul r%d, r%d, r%d\n", rd, ra, rb); - gen_mul(dc, cpu_R[rd], cpu_R[ra], cpu_R[rb]); - return; - - case 0x7: /* l.muld */ - LOG_DIS("l.muld r%d, r%d\n", ra, rb); - gen_muld(dc, cpu_R[ra], cpu_R[rb]); - break; + TCGv t0 = tcg_temp_new(); + tcg_gen_addi_tl(t0, cpu_R[a->a], a->i); + tcg_gen_qemu_st_tl(cpu_R[a->b], t0, dc->mem_idx, mop); + tcg_temp_free(t0); +} - case 0x9: /* l.div */ - LOG_DIS("l.div r%d, r%d, r%d\n", rd, ra, rb); - gen_div(dc, cpu_R[rd], cpu_R[ra], cpu_R[rb]); - return; +static bool trans_l_sw(DisasContext *dc, arg_store *a, uint32_t insn) +{ + LOG_DIS("l.sw r%d, r%d, %d\n", a->a, a->b, a->i); + do_store(dc, a, MO_TEUL); + return true; +} - case 0xa: /* l.divu */ - LOG_DIS("l.divu r%d, r%d, r%d\n", rd, ra, rb); - gen_divu(dc, cpu_R[rd], cpu_R[ra], cpu_R[rb]); - return; +static bool trans_l_sb(DisasContext *dc, arg_store *a, uint32_t insn) +{ + LOG_DIS("l.sb r%d, r%d, %d\n", a->a, a->b, a->i); + do_store(dc, a, MO_UB); + return true; +} - case 0xb: /* l.mulu */ - LOG_DIS("l.mulu r%d, r%d, r%d\n", rd, ra, rb); - gen_mulu(dc, cpu_R[rd], cpu_R[ra], cpu_R[rb]); - return; +static bool trans_l_sh(DisasContext *dc, arg_store *a, uint32_t insn) +{ + LOG_DIS("l.sh r%d, r%d, %d\n", a->a, a->b, a->i); + do_store(dc, a, MO_TEUW); + return true; +} - case 0xc: /* l.muldu */ - LOG_DIS("l.muldu r%d, r%d\n", ra, rb); - gen_muldu(dc, cpu_R[ra], cpu_R[rb]); - return; - } - break; - } - gen_illegal_exception(dc); +static bool trans_l_nop(DisasContext *dc, arg_l_nop *a, uint32_t insn) +{ + LOG_DIS("l.nop %d\n", a->k); + return true; } -static void dec_misc(DisasContext *dc, uint32_t insn) +static bool trans_l_addi(DisasContext *dc, arg_rri *a, uint32_t insn) { - uint32_t op0, op1; - uint32_t ra, rb, rd; - uint32_t L6, K5, K16, K5_11; - int32_t I16, I5_11, N26; - TCGMemOp mop; TCGv t0; - 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); - L6 = extract32(insn, 5, 6); - K5 = extract32(insn, 0, 5); - K16 = extract32(insn, 0, 16); - I16 = (int16_t)K16; - N26 = sextract32(insn, 0, 26); - K5_11 = (extract32(insn, 21, 5) << 11) | extract32(insn, 0, 11); - I5_11 = (int16_t)K5_11; - - 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 r%d, %d\n", ra, I16); - t0 = tcg_const_tl(I16); - gen_mac(dc, cpu_R[ra], t0); - tcg_temp_free(t0); - 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->base.is_jmp = DISAS_UPDATE; -#endif - } - break; - - case 0x1b: /* l.lwa */ - LOG_DIS("l.lwa r%d, r%d, %d\n", rd, ra, I16); - check_r0_write(rd); - gen_lwa(dc, cpu_R[rd], cpu_R[ra], I16); - break; + LOG_DIS("l.addi r%d, r%d, %d\n", a->d, a->a, a->i); + check_r0_write(a->d); + t0 = tcg_const_tl(a->i); + gen_add(dc, cpu_R[a->d], cpu_R[a->a], t0); + tcg_temp_free(t0); + return true; +} - case 0x1c: /* l.cust1 */ - LOG_DIS("l.cust1\n"); - break; +static bool trans_l_addic(DisasContext *dc, arg_rri *a, uint32_t insn) +{ + TCGv t0; - case 0x1d: /* l.cust2 */ - LOG_DIS("l.cust2\n"); - break; + LOG_DIS("l.addic r%d, r%d, %d\n", a->d, a->a, a->i); + check_r0_write(a->d); + t0 = tcg_const_tl(a->i); + gen_addc(dc, cpu_R[a->d], cpu_R[a->a], t0); + tcg_temp_free(t0); + return true; +} - case 0x1e: /* l.cust3 */ - LOG_DIS("l.cust3\n"); - break; +static bool trans_l_muli(DisasContext *dc, arg_rri *a, uint32_t insn) +{ + TCGv t0; - case 0x1f: /* l.cust4 */ - LOG_DIS("l.cust4\n"); - break; + LOG_DIS("l.muli r%d, r%d, %d\n", a->d, a->a, a->i); + check_r0_write(a->d); + t0 = tcg_const_tl(a->i); + gen_mul(dc, cpu_R[a->d], cpu_R[a->a], t0); + tcg_temp_free(t0); + return true; +} - case 0x3c: /* l.cust5 */ - LOG_DIS("l.cust5 r%d, r%d, r%d, %d, %d\n", rd, ra, rb, L6, K5); - break; +static bool trans_l_maci(DisasContext *dc, arg_l_maci *a, uint32_t insn) +{ + TCGv t0; - case 0x3d: /* l.cust6 */ - LOG_DIS("l.cust6\n"); - break; + LOG_DIS("l.maci r%d, %d\n", a->a, a->i); + t0 = tcg_const_tl(a->i); + gen_mac(dc, cpu_R[a->a], t0); + tcg_temp_free(t0); + return true; +} - case 0x3e: /* l.cust7 */ - LOG_DIS("l.cust7\n"); - break; +static bool trans_l_andi(DisasContext *dc, arg_rrk *a, uint32_t insn) +{ + LOG_DIS("l.andi r%d, r%d, %d\n", a->d, a->a, a->k); + check_r0_write(a->d); + tcg_gen_andi_tl(cpu_R[a->d], cpu_R[a->a], a->k); + return true; +} - case 0x3f: /* l.cust8 */ - LOG_DIS("l.cust8\n"); - break; +static bool trans_l_ori(DisasContext *dc, arg_rrk *a, uint32_t insn) +{ + LOG_DIS("l.ori r%d, r%d, %d\n", a->d, a->a, a->k); + check_r0_write(a->d); + tcg_gen_ori_tl(cpu_R[a->d], cpu_R[a->a], a->k); + return true; +} -/* 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*/ +static bool trans_l_xori(DisasContext *dc, arg_rri *a, uint32_t insn) +{ + LOG_DIS("l.xori r%d, r%d, %d\n", a->d, a->a, a->i); + check_r0_write(a->d); + tcg_gen_xori_tl(cpu_R[a->d], cpu_R[a->a], a->i); + return true; +} - 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: - check_r0_write(rd); - t0 = tcg_temp_new(); - tcg_gen_addi_tl(t0, cpu_R[ra], I16); - 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); - check_r0_write(rd); - t0 = tcg_const_tl(I16); - gen_add(dc, cpu_R[rd], cpu_R[ra], t0); - tcg_temp_free(t0); - break; - - case 0x28: /* l.addic */ - LOG_DIS("l.addic r%d, r%d, %d\n", rd, ra, I16); - check_r0_write(rd); - t0 = tcg_const_tl(I16); - gen_addc(dc, cpu_R[rd], cpu_R[ra], t0); - tcg_temp_free(t0); - break; - - case 0x29: /* l.andi */ - LOG_DIS("l.andi r%d, r%d, %d\n", rd, ra, K16); - check_r0_write(rd); - tcg_gen_andi_tl(cpu_R[rd], cpu_R[ra], K16); - break; - - case 0x2a: /* l.ori */ - LOG_DIS("l.ori r%d, r%d, %d\n", rd, ra, K16); - check_r0_write(rd); - tcg_gen_ori_tl(cpu_R[rd], cpu_R[ra], K16); - break; - - case 0x2b: /* l.xori */ - LOG_DIS("l.xori r%d, r%d, %d\n", rd, ra, I16); - check_r0_write(rd); - tcg_gen_xori_tl(cpu_R[rd], cpu_R[ra], I16); - break; - - case 0x2c: /* l.muli */ - LOG_DIS("l.muli r%d, r%d, %d\n", rd, ra, I16); - check_r0_write(rd); - t0 = tcg_const_tl(I16); - gen_mul(dc, cpu_R[rd], cpu_R[ra], t0); - tcg_temp_free(t0); - break; - - case 0x2d: /* l.mfspr */ - LOG_DIS("l.mfspr r%d, r%d, %d\n", rd, ra, K16); - check_r0_write(rd); - { -#if defined(CONFIG_USER_ONLY) - return; -#else - TCGv_i32 ti = tcg_const_i32(K16); - 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; +static bool trans_l_mfspr(DisasContext *dc, arg_l_mfspr *a, uint32_t insn) +{ + LOG_DIS("l.mfspr r%d, r%d, %d\n", a->d, a->a, a->k); + check_r0_write(a->d); - case 0x30: /* l.mtspr */ - LOG_DIS("l.mtspr r%d, r%d, %d\n", ra, rb, K5_11); - { -#if defined(CONFIG_USER_ONLY) - return; +#ifdef CONFIG_USER_ONLY + gen_illegal_exception(dc); #else - TCGv_i32 im = tcg_const_i32(K5_11); - 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); + if (dc->mem_idx == MMU_USER_IDX) { + gen_illegal_exception(dc); + } else { + TCGv_i32 ti = tcg_const_i32(a->k); + gen_helper_mfspr(cpu_R[a->d], cpu_env, cpu_R[a->d], cpu_R[a->a], ti); + tcg_temp_free_i32(ti); + } #endif - } - break; - - case 0x33: /* l.swa */ - LOG_DIS("l.swa r%d, r%d, %d\n", ra, rb, I5_11); - gen_swa(dc, rb, cpu_R[ra], I5_11); - break; - -/* not used yet, open it when we need or64. */ -/*#ifdef TARGET_OPENRISC64 - case 0x34: l.sd - LOG_DIS("l.sd r%d, r%d, %d\n", ra, rb, I5_11); - check_ob64s(dc); - mop = MO_TEQ; - goto do_store; -#endif*/ + return true; +} - case 0x35: /* l.sw */ - LOG_DIS("l.sw r%d, r%d, %d\n", ra, rb, I5_11); - mop = MO_TEUL; - goto do_store; - - case 0x36: /* l.sb */ - LOG_DIS("l.sb r%d, r%d, %d\n", ra, rb, I5_11); - mop = MO_UB; - goto do_store; - - case 0x37: /* l.sh */ - LOG_DIS("l.sh r%d, r%d, %d\n", ra, rb, I5_11); - mop = MO_TEUW; - goto do_store; - - do_store: - { - TCGv t0 = tcg_temp_new(); - tcg_gen_addi_tl(t0, cpu_R[ra], I5_11); - tcg_gen_qemu_st_tl(cpu_R[rb], t0, dc->mem_idx, mop); - tcg_temp_free(t0); - } - break; +static bool trans_l_mtspr(DisasContext *dc, arg_l_mtspr *a, uint32_t insn) +{ + LOG_DIS("l.mtspr r%d, r%d, %d\n", a->a, a->b, a->k); - default: +#ifdef CONFIG_USER_ONLY + gen_illegal_exception(dc); +#else + if (dc->mem_idx == MMU_USER_IDX) { gen_illegal_exception(dc); - break; + } else { + TCGv_i32 ti = tcg_const_i32(a->k); + gen_helper_mtspr(cpu_env, cpu_R[a->a], cpu_R[a->b], ti); + tcg_temp_free_i32(ti); } +#endif + return true; } -static void dec_mac(DisasContext *dc, uint32_t insn) +static bool trans_l_mac(DisasContext *dc, arg_ab *a, 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); + LOG_DIS("l.mac r%d, r%d\n", a->a, a->b); + gen_mac(dc, cpu_R[a->a], cpu_R[a->b]); + return true; +} - switch (op0) { - case 0x0001: /* l.mac */ - LOG_DIS("l.mac r%d, r%d\n", ra, rb); - gen_mac(dc, cpu_R[ra], cpu_R[rb]); - break; +static bool trans_l_msb(DisasContext *dc, arg_ab *a, uint32_t insn) +{ + LOG_DIS("l.msb r%d, r%d\n", a->a, a->b); + gen_msb(dc, cpu_R[a->a], cpu_R[a->b]); + return true; +} - case 0x0002: /* l.msb */ - LOG_DIS("l.msb r%d, r%d\n", ra, rb); - gen_msb(dc, cpu_R[ra], cpu_R[rb]); - break; +static bool trans_l_macu(DisasContext *dc, arg_ab *a, uint32_t insn) +{ + LOG_DIS("l.mac r%d, r%d\n", a->a, a->b); + gen_macu(dc, cpu_R[a->a], cpu_R[a->b]); + return true; +} - case 0x0003: /* l.macu */ - LOG_DIS("l.macu r%d, r%d\n", ra, rb); - gen_macu(dc, cpu_R[ra], cpu_R[rb]); - break; +static bool trans_l_msbu(DisasContext *dc, arg_ab *a, uint32_t insn) +{ + LOG_DIS("l.msb r%d, r%d\n", a->a, a->b); + gen_msbu(dc, cpu_R[a->a], cpu_R[a->b]); + return true; +} - case 0x0004: /* l.msbu */ - LOG_DIS("l.msbu r%d, r%d\n", ra, rb); - gen_msbu(dc, cpu_R[ra], cpu_R[rb]); - break; +static bool trans_l_slli(DisasContext *dc, arg_dal *a, uint32_t insn) +{ + LOG_DIS("l.slli r%d, r%d, %d\n", a->d, a->a, a->l); + check_r0_write(a->d); + tcg_gen_shli_tl(cpu_R[a->d], cpu_R[a->a], a->l & (TARGET_LONG_BITS - 1)); + return true; +} - default: - gen_illegal_exception(dc); - break; - } -} - -static void dec_logic(DisasContext *dc, uint32_t insn) -{ - uint32_t op0; - uint32_t rd, ra, L6, S6; - op0 = extract32(insn, 6, 2); - rd = extract32(insn, 21, 5); - ra = extract32(insn, 16, 5); - L6 = extract32(insn, 0, 6); - S6 = L6 & (TARGET_LONG_BITS - 1); - - check_r0_write(rd); - 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], S6); - 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], S6); - 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], S6); - 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], S6); - break; - - default: - gen_illegal_exception(dc); - break; - } +static bool trans_l_srli(DisasContext *dc, arg_dal *a, uint32_t insn) +{ + LOG_DIS("l.srli r%d, r%d, %d\n", a->d, a->a, a->l); + check_r0_write(a->d); + tcg_gen_shri_tl(cpu_R[a->d], cpu_R[a->a], a->l & (TARGET_LONG_BITS - 1)); + return true; } -static void dec_M(DisasContext *dc, uint32_t insn) +static bool trans_l_srai(DisasContext *dc, arg_dal *a, 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); + LOG_DIS("l.srai r%d, r%d, %d\n", a->d, a->a, a->l); + check_r0_write(a->d); + tcg_gen_sari_tl(cpu_R[a->d], cpu_R[a->a], a->l & (TARGET_LONG_BITS - 1)); + return true; +} - check_r0_write(rd); - 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; +static bool trans_l_rori(DisasContext *dc, arg_dal *a, uint32_t insn) +{ + LOG_DIS("l.rori r%d, r%d, %d\n", a->d, a->a, a->l); + check_r0_write(a->d); + tcg_gen_rotri_tl(cpu_R[a->d], cpu_R[a->a], a->l & (TARGET_LONG_BITS - 1)); + return true; +} - case 0x1: /* l.macrc */ - LOG_DIS("l.macrc r%d\n", rd); - tcg_gen_trunc_i64_tl(cpu_R[rd], cpu_mac); - tcg_gen_movi_i64(cpu_mac, 0); - break; +static bool trans_l_movhi(DisasContext *dc, arg_l_movhi *a, uint32_t insn) +{ + LOG_DIS("l.movhi r%d, %d\n", a->d, a->k); + check_r0_write(a->d); + tcg_gen_movi_tl(cpu_R[a->d], a->k << 16); + return true; +} - default: - gen_illegal_exception(dc); - break; - } +static bool trans_l_macrc(DisasContext *dc, arg_l_macrc *a, uint32_t insn) +{ + LOG_DIS("l.macrc r%d\n", a->d); + check_r0_write(a->d); + tcg_gen_trunc_i64_tl(cpu_R[a->d], cpu_mac); + tcg_gen_movi_i64(cpu_mac, 0); + return true; } -static void dec_comp(DisasContext *dc, uint32_t insn) +static bool trans_l_sfeq(DisasContext *dc, arg_ab *a, TCGCond cond) { - uint32_t op0; - uint32_t ra, rb; + LOG_DIS("l.sfeq r%d, r%d\n", a->a, a->b); + tcg_gen_setcond_tl(TCG_COND_EQ, cpu_sr_f, cpu_R[a->a], cpu_R[a->b]); + return true; +} - op0 = extract32(insn, 21, 5); - ra = extract32(insn, 16, 5); - rb = extract32(insn, 11, 5); +static bool trans_l_sfne(DisasContext *dc, arg_ab *a, TCGCond cond) +{ + LOG_DIS("l.sfne r%d, r%d\n", a->a, a->b); + tcg_gen_setcond_tl(TCG_COND_NE, cpu_sr_f, cpu_R[a->a], cpu_R[a->b]); + return true; +} - /* unsigned integers */ - tcg_gen_ext32u_tl(cpu_R[ra], cpu_R[ra]); - tcg_gen_ext32u_tl(cpu_R[rb], cpu_R[rb]); +static bool trans_l_sfgtu(DisasContext *dc, arg_ab *a, TCGCond cond) +{ + LOG_DIS("l.sfgtu r%d, r%d\n", a->a, a->b); + tcg_gen_setcond_tl(TCG_COND_GTU, cpu_sr_f, cpu_R[a->a], cpu_R[a->b]); + return true; +} - switch (op0) { - case 0x0: /* l.sfeq */ - LOG_DIS("l.sfeq r%d, r%d\n", ra, rb); - tcg_gen_setcond_tl(TCG_COND_EQ, cpu_sr_f, cpu_R[ra], cpu_R[rb]); - break; +static bool trans_l_sfgeu(DisasContext *dc, arg_ab *a, TCGCond cond) +{ + LOG_DIS("l.sfgeu r%d, r%d\n", a->a, a->b); + tcg_gen_setcond_tl(TCG_COND_GEU, cpu_sr_f, cpu_R[a->a], cpu_R[a->b]); + return true; +} - case 0x1: /* l.sfne */ - LOG_DIS("l.sfne r%d, r%d\n", ra, rb); - tcg_gen_setcond_tl(TCG_COND_NE, cpu_sr_f, cpu_R[ra], cpu_R[rb]); - break; +static bool trans_l_sfltu(DisasContext *dc, arg_ab *a, TCGCond cond) +{ + LOG_DIS("l.sfltu r%d, r%d\n", a->a, a->b); + tcg_gen_setcond_tl(TCG_COND_LTU, cpu_sr_f, cpu_R[a->a], cpu_R[a->b]); + return true; +} - case 0x2: /* l.sfgtu */ - LOG_DIS("l.sfgtu r%d, r%d\n", ra, rb); - tcg_gen_setcond_tl(TCG_COND_GTU, cpu_sr_f, cpu_R[ra], cpu_R[rb]); - break; +static bool trans_l_sfleu(DisasContext *dc, arg_ab *a, TCGCond cond) +{ + LOG_DIS("l.sfleu r%d, r%d\n", a->a, a->b); + tcg_gen_setcond_tl(TCG_COND_LEU, cpu_sr_f, cpu_R[a->a], cpu_R[a->b]); + return true; +} - case 0x3: /* l.sfgeu */ - LOG_DIS("l.sfgeu r%d, r%d\n", ra, rb); - tcg_gen_setcond_tl(TCG_COND_GEU, cpu_sr_f, cpu_R[ra], cpu_R[rb]); - break; +static bool trans_l_sfgts(DisasContext *dc, arg_ab *a, TCGCond cond) +{ + LOG_DIS("l.sfgts r%d, r%d\n", a->a, a->b); + tcg_gen_setcond_tl(TCG_COND_GT, cpu_sr_f, cpu_R[a->a], cpu_R[a->b]); + return true; +} - case 0x4: /* l.sfltu */ - LOG_DIS("l.sfltu r%d, r%d\n", ra, rb); - tcg_gen_setcond_tl(TCG_COND_LTU, cpu_sr_f, cpu_R[ra], cpu_R[rb]); - break; +static bool trans_l_sfges(DisasContext *dc, arg_ab *a, TCGCond cond) +{ + LOG_DIS("l.sfges r%d, r%d\n", a->a, a->b); + tcg_gen_setcond_tl(TCG_COND_GE, cpu_sr_f, cpu_R[a->a], cpu_R[a->b]); + return true; +} - case 0x5: /* l.sfleu */ - LOG_DIS("l.sfleu r%d, r%d\n", ra, rb); - tcg_gen_setcond_tl(TCG_COND_LEU, cpu_sr_f, cpu_R[ra], cpu_R[rb]); - break; +static bool trans_l_sflts(DisasContext *dc, arg_ab *a, TCGCond cond) +{ + LOG_DIS("l.sflts r%d, r%d\n", a->a, a->b); + tcg_gen_setcond_tl(TCG_COND_LT, cpu_sr_f, cpu_R[a->a], cpu_R[a->b]); + return true; +} - case 0xa: /* l.sfgts */ - LOG_DIS("l.sfgts r%d, r%d\n", ra, rb); - tcg_gen_setcond_tl(TCG_COND_GT, cpu_sr_f, cpu_R[ra], cpu_R[rb]); - break; +static bool trans_l_sfles(DisasContext *dc, arg_ab *a, TCGCond cond) +{ + LOG_DIS("l.sfles r%d, r%d\n", a->a, a->b); + tcg_gen_setcond_tl(TCG_COND_LE, cpu_sr_f, cpu_R[a->a], cpu_R[a->b]); + return true; +} - case 0xb: /* l.sfges */ - LOG_DIS("l.sfges r%d, r%d\n", ra, rb); - tcg_gen_setcond_tl(TCG_COND_GE, cpu_sr_f, cpu_R[ra], cpu_R[rb]); - break; +static bool trans_l_sfeqi(DisasContext *dc, arg_ai *a, TCGCond cond) +{ + LOG_DIS("l.sfeqi r%d, %d\n", a->a, a->i); + tcg_gen_setcondi_tl(TCG_COND_EQ, cpu_sr_f, cpu_R[a->a], a->i); + return true; +} - case 0xc: /* l.sflts */ - LOG_DIS("l.sflts r%d, r%d\n", ra, rb); - tcg_gen_setcond_tl(TCG_COND_LT, cpu_sr_f, cpu_R[ra], cpu_R[rb]); - break; +static bool trans_l_sfnei(DisasContext *dc, arg_ai *a, TCGCond cond) +{ + LOG_DIS("l.sfnei r%d, %d\n", a->a, a->i); + tcg_gen_setcondi_tl(TCG_COND_NE, cpu_sr_f, cpu_R[a->a], a->i); + return true; +} - case 0xd: /* l.sfles */ - LOG_DIS("l.sfles r%d, r%d\n", ra, rb); - tcg_gen_setcond_tl(TCG_COND_LE, cpu_sr_f, cpu_R[ra], cpu_R[rb]); - break; +static bool trans_l_sfgtui(DisasContext *dc, arg_ai *a, TCGCond cond) +{ + LOG_DIS("l.sfgtui r%d, %d\n", a->a, a->i); + tcg_gen_setcondi_tl(TCG_COND_GTU, cpu_sr_f, cpu_R[a->a], a->i); + return true; +} - default: - gen_illegal_exception(dc); - break; - } +static bool trans_l_sfgeui(DisasContext *dc, arg_ai *a, TCGCond cond) +{ + LOG_DIS("l.sfgeui r%d, %d\n", a->a, a->i); + tcg_gen_setcondi_tl(TCG_COND_GEU, cpu_sr_f, cpu_R[a->a], a->i); + return true; } -static void dec_compi(DisasContext *dc, uint32_t insn) +static bool trans_l_sfltui(DisasContext *dc, arg_ai *a, TCGCond cond) { - uint32_t op0, ra; - int32_t I16; + LOG_DIS("l.sfltui r%d, %d\n", a->a, a->i); + tcg_gen_setcondi_tl(TCG_COND_LTU, cpu_sr_f, cpu_R[a->a], a->i); + return true; +} - op0 = extract32(insn, 21, 5); - ra = extract32(insn, 16, 5); - I16 = sextract32(insn, 0, 16); +static bool trans_l_sfleui(DisasContext *dc, arg_ai *a, TCGCond cond) +{ + LOG_DIS("l.sfleui r%d, %d\n", a->a, a->i); + tcg_gen_setcondi_tl(TCG_COND_LEU, cpu_sr_f, cpu_R[a->a], a->i); + return true; +} - switch (op0) { - case 0x0: /* l.sfeqi */ - LOG_DIS("l.sfeqi r%d, %d\n", ra, I16); - tcg_gen_setcondi_tl(TCG_COND_EQ, cpu_sr_f, cpu_R[ra], I16); - break; +static bool trans_l_sfgtsi(DisasContext *dc, arg_ai *a, TCGCond cond) +{ + LOG_DIS("l.sfgtsi r%d, %d\n", a->a, a->i); + tcg_gen_setcondi_tl(TCG_COND_GT, cpu_sr_f, cpu_R[a->a], a->i); + return true; +} - case 0x1: /* l.sfnei */ - LOG_DIS("l.sfnei r%d, %d\n", ra, I16); - tcg_gen_setcondi_tl(TCG_COND_NE, cpu_sr_f, cpu_R[ra], I16); - break; +static bool trans_l_sfgesi(DisasContext *dc, arg_ai *a, TCGCond cond) +{ + LOG_DIS("l.sfgesi r%d, %d\n", a->a, a->i); + tcg_gen_setcondi_tl(TCG_COND_GE, cpu_sr_f, cpu_R[a->a], a->i); + return true; +} - case 0x2: /* l.sfgtui */ - LOG_DIS("l.sfgtui r%d, %d\n", ra, I16); - tcg_gen_setcondi_tl(TCG_COND_GTU, cpu_sr_f, cpu_R[ra], I16); - break; +static bool trans_l_sfltsi(DisasContext *dc, arg_ai *a, TCGCond cond) +{ + LOG_DIS("l.sfltsi r%d, %d\n", a->a, a->i); + tcg_gen_setcondi_tl(TCG_COND_LT, cpu_sr_f, cpu_R[a->a], a->i); + return true; +} - case 0x3: /* l.sfgeui */ - LOG_DIS("l.sfgeui r%d, %d\n", ra, I16); - tcg_gen_setcondi_tl(TCG_COND_GEU, cpu_sr_f, cpu_R[ra], I16); - break; +static bool trans_l_sflesi(DisasContext *dc, arg_ai *a, TCGCond cond) +{ + LOG_DIS("l.sflesi r%d, %d\n", a->a, a->i); + tcg_gen_setcondi_tl(TCG_COND_LE, cpu_sr_f, cpu_R[a->a], a->i); + return true; +} - case 0x4: /* l.sfltui */ - LOG_DIS("l.sfltui r%d, %d\n", ra, I16); - tcg_gen_setcondi_tl(TCG_COND_LTU, cpu_sr_f, cpu_R[ra], I16); - break; +static bool trans_l_sys(DisasContext *dc, arg_l_sys *a, uint32_t insn) +{ + LOG_DIS("l.sys %d\n", a->k); + tcg_gen_movi_tl(cpu_pc, dc->base.pc_next); + gen_exception(dc, EXCP_SYSCALL); + dc->base.is_jmp = DISAS_NORETURN; + return true; +} - case 0x5: /* l.sfleui */ - LOG_DIS("l.sfleui r%d, %d\n", ra, I16); - tcg_gen_setcondi_tl(TCG_COND_LEU, cpu_sr_f, cpu_R[ra], I16); - break; +static bool trans_l_trap(DisasContext *dc, arg_l_trap *a, uint32_t insn) +{ + LOG_DIS("l.trap %d\n", a->k); + tcg_gen_movi_tl(cpu_pc, dc->base.pc_next); + gen_exception(dc, EXCP_TRAP); + dc->base.is_jmp = DISAS_NORETURN; + return true; +} - case 0xa: /* l.sfgtsi */ - LOG_DIS("l.sfgtsi r%d, %d\n", ra, I16); - tcg_gen_setcondi_tl(TCG_COND_GT, cpu_sr_f, cpu_R[ra], I16); - break; +static bool trans_l_msync(DisasContext *dc, arg_l_msync *a, uint32_t insn) +{ + LOG_DIS("l.msync\n"); + tcg_gen_mb(TCG_MO_ALL); + return true; +} - case 0xb: /* l.sfgesi */ - LOG_DIS("l.sfgesi r%d, %d\n", ra, I16); - tcg_gen_setcondi_tl(TCG_COND_GE, cpu_sr_f, cpu_R[ra], I16); - break; +static bool trans_l_psync(DisasContext *dc, arg_l_psync *a, uint32_t insn) +{ + LOG_DIS("l.psync\n"); + return true; +} - case 0xc: /* l.sfltsi */ - LOG_DIS("l.sfltsi r%d, %d\n", ra, I16); - tcg_gen_setcondi_tl(TCG_COND_LT, cpu_sr_f, cpu_R[ra], I16); - break; +static bool trans_l_csync(DisasContext *dc, arg_l_csync *a, uint32_t insn) +{ + LOG_DIS("l.csync\n"); + return true; +} - case 0xd: /* l.sflesi */ - LOG_DIS("l.sflesi r%d, %d\n", ra, I16); - tcg_gen_setcondi_tl(TCG_COND_LE, cpu_sr_f, cpu_R[ra], I16); - break; +static bool trans_l_rfe(DisasContext *dc, arg_l_rfe *a, uint32_t insn) +{ + LOG_DIS("l.rfe\n"); - default: +#ifdef CONFIG_USER_ONLY + gen_illegal_exception(dc); +#else + if (dc->mem_idx == MMU_USER_IDX) { gen_illegal_exception(dc); - break; + } else { + gen_helper_rfe(cpu_env); + dc->base.is_jmp = DISAS_UPDATE; } +#endif + return true; } -static void dec_sys(DisasContext *dc, uint32_t insn) +static void do_fp2(DisasContext *dc, arg_da *a, + void (*fn)(TCGv, TCGv_env, TCGv)) { - uint32_t op0; - uint32_t K16; - - op0 = extract32(insn, 16, 10); - K16 = extract32(insn, 0, 16); - - switch (op0) { - case 0x000: /* l.sys */ - LOG_DIS("l.sys %d\n", K16); - tcg_gen_movi_tl(cpu_pc, dc->base.pc_next); - gen_exception(dc, EXCP_SYSCALL); - dc->base.is_jmp = DISAS_NORETURN; - break; - - case 0x100: /* l.trap */ - LOG_DIS("l.trap %d\n", K16); - tcg_gen_movi_tl(cpu_pc, dc->base.pc_next); - gen_exception(dc, EXCP_TRAP); - dc->base.is_jmp = DISAS_NORETURN; - break; - - case 0x300: /* l.csync */ - LOG_DIS("l.csync\n"); - break; - - case 0x200: /* l.msync */ - LOG_DIS("l.msync\n"); - tcg_gen_mb(TCG_MO_ALL); - break; + check_r0_write(a->d); + fn(cpu_R[a->d], cpu_env, cpu_R[a->a]); + gen_helper_update_fpcsr(cpu_env); +} - case 0x270: /* l.psync */ - LOG_DIS("l.psync\n"); - break; +static void do_fp3(DisasContext *dc, arg_dab *a, + void (*fn)(TCGv, TCGv_env, TCGv, TCGv)) +{ + check_r0_write(a->d); + fn(cpu_R[a->d], cpu_env, cpu_R[a->a], cpu_R[a->b]); + gen_helper_update_fpcsr(cpu_env); +} - default: - gen_illegal_exception(dc); - break; +static void do_fpcmp(DisasContext *dc, arg_ab *a, + void (*fn)(TCGv, TCGv_env, TCGv, TCGv), + bool inv, bool swap) +{ + if (swap) { + fn(cpu_sr_f, cpu_env, cpu_R[a->b], cpu_R[a->a]); + } else { + fn(cpu_sr_f, cpu_env, cpu_R[a->a], cpu_R[a->b]); + } + if (inv) { + tcg_gen_xori_tl(cpu_sr_f, cpu_sr_f, 1); } + gen_helper_update_fpcsr(cpu_env); +} + +static bool trans_lf_add_s(DisasContext *dc, arg_dab *a, uint32_t insn) +{ + LOG_DIS("lf.add.s r%d, r%d, r%d\n", a->d, a->a, a->b); + do_fp3(dc, a, gen_helper_float_add_s); + return true; } -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); - check_r0_write(rd); - 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); - check_r0_write(rd); - 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); - check_r0_write(rd); - gen_helper_float_mul_s(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]); - break; - - case 0x03: /* lf.div.s */ - LOG_DIS("lf.div.s r%d, r%d, r%d\n", rd, ra, rb); - check_r0_write(rd); - 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); - check_r0_write(rd); - 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); - check_r0_write(rd); - 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); - check_r0_write(rd); - 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); - check_r0_write(rd); - gen_helper_float_madd_s(cpu_R[rd], cpu_env, cpu_R[rd], - 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(cpu_sr_f, 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(cpu_sr_f, 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(cpu_sr_f, 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(cpu_sr_f, 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(cpu_sr_f, 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(cpu_sr_f, cpu_env, cpu_R[ra], cpu_R[rb]); - break; +static bool trans_lf_sub_s(DisasContext *dc, arg_dab *a, uint32_t insn) +{ + LOG_DIS("lf.sub.s r%d, r%d, r%d\n", a->d, a->a, a->b); + do_fp3(dc, a, gen_helper_float_sub_s); + return true; +} -/* 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); - check_r0_write(rd); - 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); - check_r0_write(rd); - 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); - check_r0_write(rd); - gen_helper_float_mul_d(cpu_R[rd], cpu_env, cpu_R[ra], cpu_R[rb]); - break; - - case 0x13: lf.div.d - LOG_DIS("lf.div.d r%d, r%d, r%d\n", rd, ra, rb); - check_of64s(dc); - check_r0_write(rd); - 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); - check_r0_write(rd); - 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); - check_r0_write(rd); - 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); - check_r0_write(rd); - 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); - check_r0_write(rd); - gen_helper_float_madd_d(cpu_R[rd], cpu_env, cpu_R[rd], - 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(cpu_sr_f, 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(cpu_sr_f, 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(cpu_sr_f, 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(cpu_sr_f, 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(cpu_sr_f, 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(cpu_sr_f, cpu_env, cpu_R[ra], cpu_R[rb]); - break; -#endif*/ +static bool trans_lf_mul_s(DisasContext *dc, arg_dab *a, uint32_t insn) +{ + LOG_DIS("lf.mul.s r%d, r%d, r%d\n", a->d, a->a, a->b); + do_fp3(dc, a, gen_helper_float_mul_s); + return true; +} - default: - gen_illegal_exception(dc); - break; - } +static bool trans_lf_div_s(DisasContext *dc, arg_dab *a, uint32_t insn) +{ + LOG_DIS("lf.div.s r%d, r%d, r%d\n", a->d, a->a, a->b); + do_fp3(dc, a, gen_helper_float_div_s); + return true; } -static void disas_openrisc_insn(DisasContext *dc, OpenRISCCPU *cpu) +static bool trans_lf_rem_s(DisasContext *dc, arg_dab *a, uint32_t insn) { - uint32_t op0; - uint32_t insn; - insn = cpu_ldl_code(&cpu->env, dc->base.pc_next); - op0 = extract32(insn, 26, 6); + LOG_DIS("lf.rem.s r%d, r%d, r%d\n", a->d, a->a, a->b); + do_fp3(dc, a, gen_helper_float_rem_s); + return true; +} - switch (op0) { - case 0x06: - dec_M(dc, insn); - break; +static bool trans_lf_itof_s(DisasContext *dc, arg_da *a, uint32_t insn) +{ + LOG_DIS("lf.itof.s r%d, r%d\n", a->d, a->a); + do_fp2(dc, a, gen_helper_itofs); + return true; +} - case 0x08: - dec_sys(dc, insn); - break; +static bool trans_lf_ftoi_s(DisasContext *dc, arg_da *a, uint32_t insn) +{ + LOG_DIS("lf.ftoi.s r%d, r%d\n", a->d, a->a); + do_fp2(dc, a, gen_helper_ftois); + return true; +} - case 0x2e: - dec_logic(dc, insn); - break; +static bool trans_lf_madd_s(DisasContext *dc, arg_dab *a, uint32_t insn) +{ + LOG_DIS("lf.madd.s r%d, r%d, r%d\n", a->d, a->a, a->b); + check_r0_write(a->d); + gen_helper_float_madd_s(cpu_R[a->d], cpu_env, cpu_R[a->d], + cpu_R[a->a], cpu_R[a->b]); + gen_helper_update_fpcsr(cpu_env); + return true; +} - case 0x2f: - dec_compi(dc, insn); - break; +static bool trans_lf_sfeq_s(DisasContext *dc, arg_ab *a, uint32_t insn) +{ + LOG_DIS("lf.sfeq.s r%d, r%d\n", a->a, a->b); + do_fpcmp(dc, a, gen_helper_float_eq_s, false, false); + return true; +} - case 0x31: - dec_mac(dc, insn); - break; +static bool trans_lf_sfne_s(DisasContext *dc, arg_ab *a, uint32_t insn) +{ + LOG_DIS("lf.sfne.s r%d, r%d\n", a->a, a->b); + do_fpcmp(dc, a, gen_helper_float_eq_s, true, false); + return true; +} - case 0x32: - dec_float(dc, insn); - break; +static bool trans_lf_sfgt_s(DisasContext *dc, arg_ab *a, uint32_t insn) +{ + LOG_DIS("lf.sfgt.s r%d, r%d\n", a->a, a->b); + do_fpcmp(dc, a, gen_helper_float_lt_s, false, true); + return true; +} - case 0x38: - dec_calc(dc, insn); - break; +static bool trans_lf_sfge_s(DisasContext *dc, arg_ab *a, uint32_t insn) +{ + LOG_DIS("lf.sfge.s r%d, r%d\n", a->a, a->b); + do_fpcmp(dc, a, gen_helper_float_le_s, false, true); + return true; +} - case 0x39: - dec_comp(dc, insn); - break; +static bool trans_lf_sflt_s(DisasContext *dc, arg_ab *a, uint32_t insn) +{ + LOG_DIS("lf.sflt.s r%d, r%d\n", a->a, a->b); + do_fpcmp(dc, a, gen_helper_float_lt_s, false, false); + return true; +} - default: - dec_misc(dc, insn); - break; - } +static bool trans_lf_sfle_s(DisasContext *dc, arg_ab *a, uint32_t insn) +{ + LOG_DIS("lf.sfle.s r%d, r%d\n", a->a, a->b); + do_fpcmp(dc, a, gen_helper_float_le_s, false, false); + return true; } static void openrisc_tr_init_disas_context(DisasContextBase *dcb, CPUState *cs) @@ -1574,8 +1427,11 @@ static void openrisc_tr_translate_insn(DisasContextBase *dcbase, CPUState *cs) { DisasContext *dc = container_of(dcbase, DisasContext, base); OpenRISCCPU *cpu = OPENRISC_CPU(cs); + uint32_t insn = cpu_ldl_code(&cpu->env, dc->base.pc_next); - disas_openrisc_insn(dc, cpu); + if (!decode(dc, insn)) { + gen_illegal_exception(dc); + } dc->base.pc_next += 4; /* delay slot */ |