diff options
Diffstat (limited to 'target-mips/translate.c')
| -rw-r--r-- | target-mips/translate.c | 31 |
1 files changed, 21 insertions, 10 deletions
diff --git a/target-mips/translate.c b/target-mips/translate.c index 71b101be32..bb8128401f 100644 --- a/target-mips/translate.c +++ b/target-mips/translate.c @@ -28,7 +28,7 @@ #include "exec-all.h" #include "disas.h" -#define MIPS_DEBUG_DISAS +//#define MIPS_DEBUG_DISAS //#define MIPS_SINGLE_STEP #ifdef USE_DIRECT_JUMP @@ -1033,13 +1033,20 @@ static void gen_compute_branch (DisasContext *ctx, uint16_t opc, case OPC_BNE: /* rx != rx */ case OPC_BGTZ: /* 0 > 0 */ case OPC_BLTZ: /* 0 < 0 */ - case OPC_BLTZAL: /* 0 < 0 */ /* Treated as NOP */ MIPS_DEBUG("bnever (NOP)"); return; + case OPC_BLTZAL: /* 0 < 0 */ + gen_op_set_T0(ctx->pc + 8); + gen_op_store_T0_gpr(31); + return; + case OPC_BLTZALL: /* 0 < 0 likely */ + gen_op_set_T0(ctx->pc + 8); + gen_op_store_T0_gpr(31); + gen_goto_tb(ctx, 0, ctx->pc + 4); + return; case OPC_BNEL: /* rx != rx likely */ case OPC_BGTZL: /* 0 > 0 likely */ - case OPC_BLTZALL: /* 0 < 0 likely */ case OPC_BLTZL: /* 0 < 0 likely */ /* Skip the instruction in the delay slot */ MIPS_DEBUG("bnever and skip"); @@ -1282,11 +1289,12 @@ static void gen_arith64 (DisasContext *ctx, uint16_t opc) static void gen_blikely(DisasContext *ctx) { - int l1; - l1 = gen_new_label(); - gen_op_jnz_T2(l1); - gen_op_save_state(ctx->hflags & ~(MIPS_HFLAG_BMASK | MIPS_HFLAG_DS)); - gen_goto_tb(ctx, 1, ctx->pc + 4); + int l1; + l1 = gen_new_label(); + gen_op_jnz_T2(l1); + gen_op_save_state(ctx->hflags & ~(MIPS_HFLAG_BMASK | MIPS_HFLAG_DS)); + gen_goto_tb(ctx, 1, ctx->pc + 4); + gen_set_label(l1); } static void decode_opc (DisasContext *ctx) @@ -1524,9 +1532,9 @@ static void decode_opc (DisasContext *ctx) int l1; l1 = gen_new_label(); gen_op_jnz_T2(l1); - gen_goto_tb(ctx, 0, ctx->btarget); - gen_set_label(l1); gen_goto_tb(ctx, 1, ctx->pc + 4); + gen_set_label(l1); + gen_goto_tb(ctx, 0, ctx->btarget); } break; case MIPS_HFLAG_BR: @@ -1722,5 +1730,8 @@ CPUMIPSState *cpu_mips_init (void) env->CP0_Debug = (1 << CP0DB_CNT) | (0x1 << CP0DB_VER); env->CP0_PRid = MIPS_CPU; env->exception_index = EXCP_NONE; +#if defined(CONFIG_USER_ONLY) + env->hflags |= MIPS_HFLAG_UM; +#endif return env; } |