diff options
Diffstat (limited to 'target-ppc/translate.c')
| -rw-r--r-- | target-ppc/translate.c | 226 |
1 files changed, 109 insertions, 117 deletions
diff --git a/target-ppc/translate.c b/target-ppc/translate.c index 380a884..5e741d1 100644 --- a/target-ppc/translate.c +++ b/target-ppc/translate.c @@ -204,6 +204,13 @@ typedef struct DisasContext { int singlestep_enabled; } DisasContext; +/* True when active word size < size of target_long. */ +#ifdef TARGET_PPC64 +# define NARROW_MODE(C) (!(C)->sf_mode) +#else +# define NARROW_MODE(C) 0 +#endif + struct opc_handler_t { /* invalid bits for instruction 1 (Rc(opcode) == 0) */ uint32_t inval1; @@ -260,12 +267,10 @@ static inline void gen_set_access_type(DisasContext *ctx, int access_type) static inline void gen_update_nip(DisasContext *ctx, target_ulong nip) { -#if defined(TARGET_PPC64) - if (ctx->sf_mode) - tcg_gen_movi_tl(cpu_nip, nip); - else -#endif - tcg_gen_movi_tl(cpu_nip, (uint32_t)nip); + if (NARROW_MODE(ctx)) { + nip = (uint32_t)nip; + } + tcg_gen_movi_tl(cpu_nip, nip); } static inline void gen_exception_err(DisasContext *ctx, uint32_t excp, uint32_t error) @@ -627,7 +632,6 @@ static inline void gen_op_cmpi(TCGv arg0, target_ulong arg1, int s, int crf) tcg_temp_free(t0); } -#if defined(TARGET_PPC64) static inline void gen_op_cmp32(TCGv arg0, TCGv arg1, int s, int crf) { TCGv t0, t1; @@ -651,68 +655,62 @@ static inline void gen_op_cmpi32(TCGv arg0, target_ulong arg1, int s, int crf) gen_op_cmp32(arg0, t0, s, crf); tcg_temp_free(t0); } -#endif static inline void gen_set_Rc0(DisasContext *ctx, TCGv reg) { -#if defined(TARGET_PPC64) - if (!(ctx->sf_mode)) + if (NARROW_MODE(ctx)) { gen_op_cmpi32(reg, 0, 1, 0); - else -#endif + } else { gen_op_cmpi(reg, 0, 1, 0); + } } /* cmp */ static void gen_cmp(DisasContext *ctx) { -#if defined(TARGET_PPC64) - if (!(ctx->sf_mode && (ctx->opcode & 0x00200000))) + if (NARROW_MODE(ctx) || !(ctx->opcode & 0x00200000)) { gen_op_cmp32(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rB(ctx->opcode)], 1, crfD(ctx->opcode)); - else -#endif + } else { gen_op_cmp(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rB(ctx->opcode)], 1, crfD(ctx->opcode)); + } } /* cmpi */ static void gen_cmpi(DisasContext *ctx) { -#if defined(TARGET_PPC64) - if (!(ctx->sf_mode && (ctx->opcode & 0x00200000))) + if (NARROW_MODE(ctx) || !(ctx->opcode & 0x00200000)) { gen_op_cmpi32(cpu_gpr[rA(ctx->opcode)], SIMM(ctx->opcode), 1, crfD(ctx->opcode)); - else -#endif + } else { gen_op_cmpi(cpu_gpr[rA(ctx->opcode)], SIMM(ctx->opcode), 1, crfD(ctx->opcode)); + } } /* cmpl */ static void gen_cmpl(DisasContext *ctx) { -#if defined(TARGET_PPC64) - if (!(ctx->sf_mode && (ctx->opcode & 0x00200000))) + if (NARROW_MODE(ctx) || !(ctx->opcode & 0x00200000)) { gen_op_cmp32(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rB(ctx->opcode)], 0, crfD(ctx->opcode)); - else -#endif + } else { gen_op_cmp(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rB(ctx->opcode)], 0, crfD(ctx->opcode)); + } } /* cmpli */ static void gen_cmpli(DisasContext *ctx) { -#if defined(TARGET_PPC64) - if (!(ctx->sf_mode && (ctx->opcode & 0x00200000))) + if (NARROW_MODE(ctx) || !(ctx->opcode & 0x00200000)) { gen_op_cmpi32(cpu_gpr[rA(ctx->opcode)], UIMM(ctx->opcode), 0, crfD(ctx->opcode)); - else -#endif + } else { gen_op_cmpi(cpu_gpr[rA(ctx->opcode)], UIMM(ctx->opcode), 0, crfD(ctx->opcode)); + } } /* isel (PowerPC 2.03 specification) */ @@ -756,11 +754,9 @@ static inline void gen_op_arith_compute_ov(DisasContext *ctx, TCGv arg0, tcg_gen_andc_tl(cpu_ov, cpu_ov, t0); } tcg_temp_free(t0); -#if defined(TARGET_PPC64) - if (!ctx->sf_mode) { + if (NARROW_MODE(ctx)) { tcg_gen_ext32s_tl(cpu_ov, cpu_ov); } -#endif tcg_gen_shri_tl(cpu_ov, cpu_ov, TARGET_LONG_BITS - 1); tcg_gen_or_tl(cpu_so, cpu_so, cpu_ov); } @@ -778,14 +774,26 @@ static inline void gen_op_arith_add(DisasContext *ctx, TCGv ret, TCGv arg1, } if (compute_ca) { - TCGv zero = tcg_const_tl(0); - if (add_ca) { - tcg_gen_add2_tl(t0, cpu_ca, arg1, zero, cpu_ca, zero); - tcg_gen_add2_tl(t0, cpu_ca, t0, cpu_ca, arg2, zero); + if (NARROW_MODE(ctx)) { + TCGv t1 = tcg_temp_new(); + tcg_gen_ext32u_tl(t1, arg2); + tcg_gen_ext32u_tl(t0, arg1); + tcg_gen_add_tl(t0, t0, t1); + tcg_temp_free(t1); + if (add_ca) { + tcg_gen_add_tl(t0, t0, cpu_ca); + } + tcg_gen_shri_tl(cpu_ca, t0, 32); } else { - tcg_gen_add2_tl(t0, cpu_ca, arg1, zero, arg2, zero); + TCGv zero = tcg_const_tl(0); + if (add_ca) { + tcg_gen_add2_tl(t0, cpu_ca, arg1, zero, cpu_ca, zero); + tcg_gen_add2_tl(t0, cpu_ca, t0, cpu_ca, arg2, zero); + } else { + tcg_gen_add2_tl(t0, cpu_ca, arg1, zero, arg2, zero); + } + tcg_temp_free(zero); } - tcg_temp_free(zero); } else { tcg_gen_add_tl(t0, arg1, arg2); if (add_ca) { @@ -1114,14 +1122,25 @@ static inline void gen_op_arith_subf(DisasContext *ctx, TCGv ret, TCGv arg1, { TCGv t0 = ret; - if (((add_ca && compute_ca) || compute_ov) - && (TCGV_EQUAL(ret, arg1) || TCGV_EQUAL(ret, arg2))) { + if (compute_ov && (TCGV_EQUAL(ret, arg1) || TCGV_EQUAL(ret, arg2))) { t0 = tcg_temp_new(); } - if (add_ca) { - /* dest = ~arg1 + arg2 + ca. */ - if (compute_ca) { + if (compute_ca) { + /* dest = ~arg1 + arg2 [+ ca]. */ + if (NARROW_MODE(ctx)) { + TCGv inv1 = tcg_temp_new(); + tcg_gen_not_tl(inv1, arg1); + tcg_gen_ext32u_tl(t0, arg2); + tcg_gen_ext32u_tl(inv1, inv1); + if (add_ca) { + tcg_gen_add_tl(t0, t0, cpu_ca); + } else { + tcg_gen_addi_tl(t0, t0, 1); + } + tcg_gen_add_tl(t0, t0, inv1); + tcg_gen_shri_tl(cpu_ca, t0, 32); + } else if (add_ca) { TCGv zero, inv1 = tcg_temp_new(); tcg_gen_not_tl(inv1, arg1); zero = tcg_const_tl(0); @@ -1130,14 +1149,16 @@ static inline void gen_op_arith_subf(DisasContext *ctx, TCGv ret, TCGv arg1, tcg_temp_free(zero); tcg_temp_free(inv1); } else { + tcg_gen_setcond_tl(TCG_COND_GEU, cpu_ca, arg2, arg1); tcg_gen_sub_tl(t0, arg2, arg1); - tcg_gen_add_tl(t0, t0, cpu_ca); - tcg_gen_subi_tl(t0, t0, 1); } + } else if (add_ca) { + /* Since we're ignoring carry-out, we can simplify the + standard ~arg1 + arg2 + ca to arg2 - arg1 + ca - 1. */ + tcg_gen_sub_tl(t0, arg2, arg1); + tcg_gen_add_tl(t0, t0, cpu_ca); + tcg_gen_subi_tl(t0, t0, 1); } else { - if (compute_ca) { - tcg_gen_setcond_tl(TCG_COND_GEU, cpu_ca, arg2, arg1); - } tcg_gen_sub_tl(t0, arg2, arg1); } @@ -2311,45 +2332,37 @@ static inline void gen_addr_imm_index(DisasContext *ctx, TCGv EA, simm &= ~maskl; if (rA(ctx->opcode) == 0) { -#if defined(TARGET_PPC64) - if (!ctx->sf_mode) { - tcg_gen_movi_tl(EA, (uint32_t)simm); - } else -#endif + if (NARROW_MODE(ctx)) { + simm = (uint32_t)simm; + } tcg_gen_movi_tl(EA, simm); } else if (likely(simm != 0)) { tcg_gen_addi_tl(EA, cpu_gpr[rA(ctx->opcode)], simm); -#if defined(TARGET_PPC64) - if (!ctx->sf_mode) { + if (NARROW_MODE(ctx)) { tcg_gen_ext32u_tl(EA, EA); } -#endif } else { -#if defined(TARGET_PPC64) - if (!ctx->sf_mode) { + if (NARROW_MODE(ctx)) { tcg_gen_ext32u_tl(EA, cpu_gpr[rA(ctx->opcode)]); - } else -#endif - tcg_gen_mov_tl(EA, cpu_gpr[rA(ctx->opcode)]); + } else { + tcg_gen_mov_tl(EA, cpu_gpr[rA(ctx->opcode)]); + } } } static inline void gen_addr_reg_index(DisasContext *ctx, TCGv EA) { if (rA(ctx->opcode) == 0) { -#if defined(TARGET_PPC64) - if (!ctx->sf_mode) { + if (NARROW_MODE(ctx)) { tcg_gen_ext32u_tl(EA, cpu_gpr[rB(ctx->opcode)]); - } else -#endif - tcg_gen_mov_tl(EA, cpu_gpr[rB(ctx->opcode)]); + } else { + tcg_gen_mov_tl(EA, cpu_gpr[rB(ctx->opcode)]); + } } else { tcg_gen_add_tl(EA, cpu_gpr[rA(ctx->opcode)], cpu_gpr[rB(ctx->opcode)]); -#if defined(TARGET_PPC64) - if (!ctx->sf_mode) { + if (NARROW_MODE(ctx)) { tcg_gen_ext32u_tl(EA, EA); } -#endif } } @@ -2357,13 +2370,10 @@ static inline void gen_addr_register(DisasContext *ctx, TCGv EA) { if (rA(ctx->opcode) == 0) { tcg_gen_movi_tl(EA, 0); + } else if (NARROW_MODE(ctx)) { + tcg_gen_ext32u_tl(EA, cpu_gpr[rA(ctx->opcode)]); } else { -#if defined(TARGET_PPC64) - if (!ctx->sf_mode) { - tcg_gen_ext32u_tl(EA, cpu_gpr[rA(ctx->opcode)]); - } else -#endif - tcg_gen_mov_tl(EA, cpu_gpr[rA(ctx->opcode)]); + tcg_gen_mov_tl(EA, cpu_gpr[rA(ctx->opcode)]); } } @@ -2371,11 +2381,9 @@ static inline void gen_addr_add(DisasContext *ctx, TCGv ret, TCGv arg1, target_long val) { tcg_gen_addi_tl(ret, arg1, val); -#if defined(TARGET_PPC64) - if (!ctx->sf_mode) { + if (NARROW_MODE(ctx)) { tcg_gen_ext32u_tl(ret, ret); } -#endif } static inline void gen_check_align(DisasContext *ctx, TCGv EA, int mask) @@ -3320,10 +3328,9 @@ static inline void gen_goto_tb(DisasContext *ctx, int n, target_ulong dest) { TranslationBlock *tb; tb = ctx->tb; -#if defined(TARGET_PPC64) - if (!ctx->sf_mode) + if (NARROW_MODE(ctx)) { dest = (uint32_t) dest; -#endif + } if ((tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK) && likely(!ctx->singlestep_enabled)) { tcg_gen_goto_tb(n); @@ -3351,12 +3358,10 @@ static inline void gen_goto_tb(DisasContext *ctx, int n, target_ulong dest) static inline void gen_setlr(DisasContext *ctx, target_ulong nip) { -#if defined(TARGET_PPC64) - if (ctx->sf_mode == 0) - tcg_gen_movi_tl(cpu_lr, (uint32_t)nip); - else -#endif - tcg_gen_movi_tl(cpu_lr, nip); + if (NARROW_MODE(ctx)) { + nip = (uint32_t)nip; + } + tcg_gen_movi_tl(cpu_lr, nip); } /* b ba bl bla */ @@ -3366,18 +3371,16 @@ static void gen_b(DisasContext *ctx) ctx->exception = POWERPC_EXCP_BRANCH; /* sign extend LI */ -#if defined(TARGET_PPC64) - if (ctx->sf_mode) - li = ((int64_t)LI(ctx->opcode) << 38) >> 38; - else -#endif - li = ((int32_t)LI(ctx->opcode) << 6) >> 6; - if (likely(AA(ctx->opcode) == 0)) + li = LI(ctx->opcode); + li = (li ^ 0x02000000) - 0x02000000; + if (likely(AA(ctx->opcode) == 0)) { target = ctx->nip + li - 4; - else + } else { target = li; - if (LK(ctx->opcode)) + } + if (LK(ctx->opcode)) { gen_setlr(ctx, ctx->nip); + } gen_update_cfar(ctx, ctx->nip); gen_goto_tb(ctx, 0, target); } @@ -3413,12 +3416,11 @@ static inline void gen_bcond(DisasContext *ctx, int type) return; } tcg_gen_subi_tl(cpu_ctr, cpu_ctr, 1); -#if defined(TARGET_PPC64) - if (!ctx->sf_mode) + if (NARROW_MODE(ctx)) { tcg_gen_ext32u_tl(temp, cpu_ctr); - else -#endif + } else { tcg_gen_mov_tl(temp, cpu_ctr); + } if (bo & 0x2) { tcg_gen_brcondi_tl(TCG_COND_NE, temp, 0, l1); } else { @@ -3452,20 +3454,14 @@ static inline void gen_bcond(DisasContext *ctx, int type) gen_set_label(l1); gen_goto_tb(ctx, 1, ctx->nip); } else { -#if defined(TARGET_PPC64) - if (!(ctx->sf_mode)) + if (NARROW_MODE(ctx)) { tcg_gen_andi_tl(cpu_nip, target, (uint32_t)~3); - else -#endif + } else { tcg_gen_andi_tl(cpu_nip, target, ~3); + } tcg_gen_exit_tb(0); gen_set_label(l1); -#if defined(TARGET_PPC64) - if (!(ctx->sf_mode)) - tcg_gen_movi_tl(cpu_nip, (uint32_t)ctx->nip); - else -#endif - tcg_gen_movi_tl(cpu_nip, ctx->nip); + gen_update_nip(ctx, ctx->nip); tcg_gen_exit_tb(0); } } @@ -4324,15 +4320,14 @@ static void gen_tlbie(DisasContext *ctx) gen_inval_exception(ctx, POWERPC_EXCP_PRIV_OPC); return; } -#if defined(TARGET_PPC64) - if (!ctx->sf_mode) { + if (NARROW_MODE(ctx)) { TCGv t0 = tcg_temp_new(); tcg_gen_ext32u_tl(t0, cpu_gpr[rB(ctx->opcode)]); gen_helper_tlbie(cpu_env, t0); tcg_temp_free(t0); - } else -#endif + } else { gen_helper_tlbie(cpu_env, cpu_gpr[rB(ctx->opcode)]); + } #endif } @@ -7577,11 +7572,9 @@ static inline void gen_addr_spe_imm_index(DisasContext *ctx, TCGv EA, int sh) tcg_gen_movi_tl(EA, uimm << sh); } else { tcg_gen_addi_tl(EA, cpu_gpr[rA(ctx->opcode)], uimm << sh); -#if defined(TARGET_PPC64) - if (!ctx->sf_mode) { + if (NARROW_MODE(ctx)) { tcg_gen_ext32u_tl(EA, EA); } -#endif } } @@ -9428,7 +9421,6 @@ void cpu_dump_state (CPUPPCState *env, FILE *f, fprintf_function cpu_fprintf, case POWERPC_MMU_SOFT_6xx: case POWERPC_MMU_SOFT_74xx: #if defined(TARGET_PPC64) - case POWERPC_MMU_620: case POWERPC_MMU_64B: #endif cpu_fprintf(f, " SDR1 " TARGET_FMT_lx "\n", env->spr[SPR_SDR1]); |
