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Diffstat (limited to 'target-mips/op.c')
| -rw-r--r-- | target-mips/op.c | 641 |
1 files changed, 641 insertions, 0 deletions
diff --git a/target-mips/op.c b/target-mips/op.c new file mode 100644 index 000000000..6d94be631 --- /dev/null +++ b/target-mips/op.c @@ -0,0 +1,641 @@ +/* + * MIPS emulation micro-operations for qemu. + * + * Copyright (c) 2004-2005 Jocelyn Mayer + * + * 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, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include "config.h" +#include "exec.h" + +#define REG 1 +#include "op_template.c" +#undef REG +#define REG 2 +#include "op_template.c" +#undef REG +#define REG 3 +#include "op_template.c" +#undef REG +#define REG 4 +#include "op_template.c" +#undef REG +#define REG 5 +#include "op_template.c" +#undef REG +#define REG 6 +#include "op_template.c" +#undef REG +#define REG 7 +#include "op_template.c" +#undef REG +#define REG 8 +#include "op_template.c" +#undef REG +#define REG 9 +#include "op_template.c" +#undef REG +#define REG 10 +#include "op_template.c" +#undef REG +#define REG 11 +#include "op_template.c" +#undef REG +#define REG 12 +#include "op_template.c" +#undef REG +#define REG 13 +#include "op_template.c" +#undef REG +#define REG 14 +#include "op_template.c" +#undef REG +#define REG 15 +#include "op_template.c" +#undef REG +#define REG 16 +#include "op_template.c" +#undef REG +#define REG 17 +#include "op_template.c" +#undef REG +#define REG 18 +#include "op_template.c" +#undef REG +#define REG 19 +#include "op_template.c" +#undef REG +#define REG 20 +#include "op_template.c" +#undef REG +#define REG 21 +#include "op_template.c" +#undef REG +#define REG 22 +#include "op_template.c" +#undef REG +#define REG 23 +#include "op_template.c" +#undef REG +#define REG 24 +#include "op_template.c" +#undef REG +#define REG 25 +#include "op_template.c" +#undef REG +#define REG 26 +#include "op_template.c" +#undef REG +#define REG 27 +#include "op_template.c" +#undef REG +#define REG 28 +#include "op_template.c" +#undef REG +#define REG 29 +#include "op_template.c" +#undef REG +#define REG 30 +#include "op_template.c" +#undef REG +#define REG 31 +#include "op_template.c" +#undef REG + +#define TN T0 +#include "op_template.c" +#undef TN +#define TN T1 +#include "op_template.c" +#undef TN +#define TN T2 +#include "op_template.c" +#undef TN + +void op_dup_T0 (void) +{ + T2 = T0; + RETURN(); +} + +void op_load_HI (void) +{ + T0 = env->HI; + RETURN(); +} + +void op_store_HI (void) +{ + env->HI = T0; + RETURN(); +} + +void op_load_LO (void) +{ + T0 = env->LO; + RETURN(); +} + +void op_store_LO (void) +{ + env->LO = T0; + RETURN(); +} + +/* Load and store */ +#define MEMSUFFIX _raw +#include "op_mem.c" +#undef MEMSUFFIX +#if !defined(CONFIG_USER_ONLY) +#define MEMSUFFIX _user +#include "op_mem.c" +#undef MEMSUFFIX + +#define MEMSUFFIX _kernel +#include "op_mem.c" +#undef MEMSUFFIX +#endif + +/* Arithmetic */ +void op_add (void) +{ + T0 += T1; + RETURN(); +} + +void op_addo (void) +{ + target_ulong tmp; + + tmp = T0; + T0 += T1; + if ((T0 >> 31) ^ (T1 >> 31) ^ (tmp >> 31)) { + CALL_FROM_TB1(do_raise_exception, EXCP_OVERFLOW); + } + RETURN(); +} + +void op_sub (void) +{ + T0 -= T1; + RETURN(); +} + +void op_subo (void) +{ + target_ulong tmp; + + tmp = T0; + T0 = (int32_t)T0 - (int32_t)T1; + if (!((T0 >> 31) ^ (T1 >> 31) ^ (tmp >> 31))) { + CALL_FROM_TB1(do_raise_exception, EXCP_OVERFLOW); + } + RETURN(); +} + +void op_mul (void) +{ + T0 = (int32_t)T0 * (int32_t)T1; + RETURN(); +} + +void op_div (void) +{ + if (T1 != 0) { + env->LO = (int32_t)T0 / (int32_t)T1; + env->HI = (int32_t)T0 % (int32_t)T1; + } + RETURN(); +} + +void op_divu (void) +{ + if (T1 != 0) { + env->LO = T0 / T1; + env->HI = T0 % T1; + } + RETURN(); +} + +/* Logical */ +void op_and (void) +{ + T0 &= T1; + RETURN(); +} + +void op_nor (void) +{ + T0 = ~(T0 | T1); + RETURN(); +} + +void op_or (void) +{ + T0 |= T1; + RETURN(); +} + +void op_xor (void) +{ + T0 ^= T1; + RETURN(); +} + +void op_sll (void) +{ + T0 = T0 << T1; + RETURN(); +} + +void op_sra (void) +{ + T0 = (int32_t)T0 >> T1; + RETURN(); +} + +void op_srl (void) +{ + T0 = T0 >> T1; + RETURN(); +} + +void op_sllv (void) +{ + T0 = T1 << (T0 & 0x1F); + RETURN(); +} + +void op_srav (void) +{ + T0 = (int32_t)T1 >> (T0 & 0x1F); + RETURN(); +} + +void op_srlv (void) +{ + T0 = T1 >> (T0 & 0x1F); + RETURN(); +} + +void op_clo (void) +{ + int n; + + if (T0 == (target_ulong)-1) { + T0 = 32; + } else { + for (n = 0; n < 32; n++) { + if (!(T0 & (1 << 31))) + break; + T0 = T0 << 1; + } + T0 = n; + } + RETURN(); +} + +void op_clz (void) +{ + int n; + + if (T0 == 0) { + T0 = 32; + } else { + for (n = 0; n < 32; n++) { + if (T0 & (1 << 31)) + break; + T0 = T0 << 1; + } + T0 = n; + } + RETURN(); +} + +/* 64 bits arithmetic */ +#if (HOST_LONG_BITS == 64) +static inline uint64_t get_HILO (void) +{ + return ((uint64_t)env->HI << 32) | (uint64_t)env->LO; +} + +static inline void set_HILO (uint64_t HILO) +{ + env->LO = HILO & 0xFFFFFFFF; + env->HI = HILO >> 32; +} + +void op_mult (void) +{ + set_HILO((int64_t)T0 * (int64_t)T1); + RETURN(); +} + +void op_multu (void) +{ + set_HILO((uint64_t)T0 * (uint64_t)T1); + RETURN(); +} + +void op_madd (void) +{ + int64_t tmp; + + tmp = ((int64_t)T0 * (int64_t)T1); + set_HILO((int64_t)get_HILO() + tmp); + RETURN(); +} + +void op_maddu (void) +{ + uint64_t tmp; + + tmp = ((uint64_t)T0 * (uint64_t)T1); + set_HILO(get_HILO() + tmp); + RETURN(); +} + +void op_msub (void) +{ + int64_t tmp; + + tmp = ((int64_t)T0 * (int64_t)T1); + set_HILO((int64_t)get_HILO() - tmp); + RETURN(); +} + +void op_msubu (void) +{ + uint64_t tmp; + + tmp = ((uint64_t)T0 * (uint64_t)T1); + set_HILO(get_HILO() - tmp); + RETURN(); +} +#else +void op_mult (void) +{ + CALL_FROM_TB0(do_mult); + RETURN(); +} + +void op_multu (void) +{ + CALL_FROM_TB0(do_multu); + RETURN(); +} + +void op_madd (void) +{ + CALL_FROM_TB0(do_madd); + RETURN(); +} + +void op_maddu (void) +{ + CALL_FROM_TB0(do_maddu); + RETURN(); +} + +void op_msub (void) +{ + CALL_FROM_TB0(do_msub); + RETURN(); +} + +void op_msubu (void) +{ + CALL_FROM_TB0(do_msubu); + RETURN(); +} +#endif + +/* Conditional moves */ +void op_movn (void) +{ + if (T1 != 0) + env->gpr[PARAM1] = T0; + RETURN(); +} + +void op_movz (void) +{ + if (T1 == 0) + env->gpr[PARAM1] = T0; + RETURN(); +} + +/* Tests */ +#define OP_COND(name, cond) \ +void glue(op_, name) (void) \ +{ \ + if (cond) { \ + T0 = 1; \ + } else { \ + T0 = 0; \ + } \ + RETURN(); \ +} + +OP_COND(eq, T0 == T1); +OP_COND(ne, T0 != T1); +OP_COND(ge, (int32_t)T0 >= (int32_t)T1); +OP_COND(geu, T0 >= T1); +OP_COND(lt, (int32_t)T0 < (int32_t)T1); +OP_COND(ltu, T0 < T1); +OP_COND(gez, (int32_t)T0 >= 0); +OP_COND(gtz, (int32_t)T0 > 0); +OP_COND(lez, (int32_t)T0 <= 0); +OP_COND(ltz, (int32_t)T0 < 0); + +/* Branchs */ +//#undef USE_DIRECT_JUMP +#define EIP env->PC + +/* Branch to register */ +void op_save_breg_target (void) +{ + env->btarget = T2; +} + +void op_restore_breg_target (void) +{ + T2 = env->btarget; +} + +void op_breg (void) +{ + env->PC = T2; + RETURN(); +} + +/* Unconditional branch */ +void op_branch (void) +{ + JUMP_TB(branch, PARAM1, 0, PARAM2); + RETURN(); +} + +void op_save_btarget (void) +{ + env->btarget = PARAM1; + RETURN(); +} + +/* Conditional branch */ +void op_set_bcond (void) +{ + T2 = T0; + RETURN(); +} + +void op_save_bcond (void) +{ + env->bcond = T2; + RETURN(); +} + +void op_restore_bcond (void) +{ + T2 = env->bcond; + RETURN(); +} + +void op_bcond (void) +{ + if (T2) { + JUMP_TB(bcond, PARAM1, 0, PARAM2); + } else { + JUMP_TB(bcond, PARAM1, 1, PARAM3); + } + RETURN(); +} + +/* Likely branch (used to skip the delay slot) */ +void op_blikely (void) +{ + /* If the test is false, skip the delay slot */ + if (T2 == 0) { + env->hflags = PARAM3; + JUMP_TB(blikely, PARAM1, 1, PARAM2); + } + RETURN(); +} + +/* CP0 functions */ +void op_mfc0 (void) +{ + CALL_FROM_TB2(do_mfc0, PARAM1, PARAM2); + RETURN(); +} + +void op_mtc0 (void) +{ + CALL_FROM_TB2(do_mtc0, PARAM1, PARAM2); + RETURN(); +} + +#if defined(MIPS_USES_R4K_TLB) +void op_tlbwi (void) +{ + CALL_FROM_TB0(do_tlbwi); + RETURN(); +} + +void op_tlbwr (void) +{ + CALL_FROM_TB0(do_tlbwr); + RETURN(); +} + +void op_tlbp (void) +{ + CALL_FROM_TB0(do_tlbp); + RETURN(); +} + +void op_tlbr (void) +{ + CALL_FROM_TB0(do_tlbr); + RETURN(); +} +#endif + +/* Specials */ +void op_pmon (void) +{ + CALL_FROM_TB1(do_pmon, PARAM1); +} + +void op_trap (void) +{ + if (T0) { + CALL_FROM_TB1(do_raise_exception, EXCP_TRAP); + } + RETURN(); +} + +void op_set_lladdr (void) +{ + env->CP0_LLAddr = T2; +} + +void debug_eret (void); +void op_eret (void) +{ + CALL_FROM_TB0(debug_eret); + if (env->hflags & MIPS_HFLAG_ERL) + env->PC = env->CP0_ErrorEPC; + else + env->PC = env->CP0_EPC; + env->CP0_LLAddr = 1; +} + +void op_deret (void) +{ + CALL_FROM_TB0(debug_eret); + env->PC = env->CP0_DEPC; +} + +void op_save_state (void) +{ + env->hflags = PARAM1; + RETURN(); +} + +void op_save_pc (void) +{ + env->PC = PARAM1; + RETURN(); +} + +void op_raise_exception (void) +{ + CALL_FROM_TB1(do_raise_exception, PARAM1); + RETURN(); +} + +void op_raise_exception_err (void) +{ + CALL_FROM_TB2(do_raise_exception_err, PARAM1, PARAM2); + RETURN(); +} + +void op_exit_tb (void) +{ + EXIT_TB(); +} + |