diff options
| -rw-r--r-- | target/hppa/translate.c | 302 |
1 files changed, 159 insertions, 143 deletions
diff --git a/target/hppa/translate.c b/target/hppa/translate.c index 993438a60b..b6e2652341 100644 --- a/target/hppa/translate.c +++ b/target/hppa/translate.c @@ -3729,185 +3729,201 @@ static DisasJumpType translate_one(DisasContext *ctx, uint32_t insn) return gen_illegal(ctx); } -void gen_intermediate_code(CPUState *cs, struct TranslationBlock *tb) +static int hppa_tr_init_disas_context(DisasContextBase *dcbase, + CPUState *cs, int max_insns) { - CPUHPPAState *env = cs->env_ptr; - DisasContext ctx; - DisasJumpType ret; - int num_insns, max_insns, i; + DisasContext *ctx = container_of(dcbase, DisasContext, base); + TranslationBlock *tb = ctx->base.tb; + int i, bound; - ctx.base.tb = tb; - ctx.base.singlestep_enabled = cs->singlestep_enabled; - ctx.cs = cs; - ctx.iaoq_f = tb->pc; - ctx.iaoq_b = tb->cs_base; + ctx->cs = cs; + ctx->iaoq_f = tb->pc; + ctx->iaoq_b = tb->cs_base; + ctx->iaoq_n = -1; + TCGV_UNUSED(ctx->iaoq_n_var); - ctx.ntemps = 0; - for (i = 0; i < ARRAY_SIZE(ctx.temps); ++i) { - TCGV_UNUSED(ctx.temps[i]); + ctx->ntemps = 0; + for (i = 0; i < ARRAY_SIZE(ctx->temps); ++i) { + TCGV_UNUSED(ctx->temps[i]); } - /* Compute the maximum number of insns to execute, as bounded by - (1) icount, (2) single-stepping, (3) branch delay slots, or - (4) the number of insns remaining on the current page. */ - max_insns = tb->cflags & CF_COUNT_MASK; - if (max_insns == 0) { - max_insns = CF_COUNT_MASK; - } - if (ctx.base.singlestep_enabled || singlestep) { - max_insns = 1; - } else if (max_insns > TCG_MAX_INSNS) { - max_insns = TCG_MAX_INSNS; - } + bound = -(tb->pc | TARGET_PAGE_MASK) / 4; + return MIN(max_insns, bound); +} - num_insns = 0; - gen_tb_start(tb); +static void hppa_tr_tb_start(DisasContextBase *dcbase, CPUState *cs) +{ + DisasContext *ctx = container_of(dcbase, DisasContext, base); /* Seed the nullification status from PSW[N], as shown in TB->FLAGS. */ - ctx.null_cond = cond_make_f(); - ctx.psw_n_nonzero = false; - if (tb->flags & 1) { - ctx.null_cond.c = TCG_COND_ALWAYS; - ctx.psw_n_nonzero = true; + ctx->null_cond = cond_make_f(); + ctx->psw_n_nonzero = false; + if (ctx->base.tb->flags & 1) { + ctx->null_cond.c = TCG_COND_ALWAYS; + ctx->psw_n_nonzero = true; } - ctx.null_lab = NULL; + ctx->null_lab = NULL; +} - do { - tcg_gen_insn_start(ctx.iaoq_f, ctx.iaoq_b); - num_insns++; +static void hppa_tr_insn_start(DisasContextBase *dcbase, CPUState *cs) +{ + DisasContext *ctx = container_of(dcbase, DisasContext, base); - if (unlikely(cpu_breakpoint_test(cs, ctx.iaoq_f, BP_ANY))) { - ret = gen_excp(&ctx, EXCP_DEBUG); - break; - } - if (num_insns == max_insns && (tb->cflags & CF_LAST_IO)) { - gen_io_start(); - } + tcg_gen_insn_start(ctx->iaoq_f, ctx->iaoq_b); +} + +static bool hppa_tr_breakpoint_check(DisasContextBase *dcbase, CPUState *cs, + const CPUBreakpoint *bp) +{ + DisasContext *ctx = container_of(dcbase, DisasContext, base); - if (ctx.iaoq_f < TARGET_PAGE_SIZE) { - ret = do_page_zero(&ctx); - assert(ret != DISAS_NEXT); + ctx->base.is_jmp = gen_excp(ctx, EXCP_DEBUG); + ctx->base.pc_next = ctx->iaoq_f + 4; + return true; +} + +static void hppa_tr_translate_insn(DisasContextBase *dcbase, CPUState *cs) +{ + DisasContext *ctx = container_of(dcbase, DisasContext, base); + CPUHPPAState *env = cs->env_ptr; + DisasJumpType ret; + int i, n; + + /* Execute one insn. */ + if (ctx->iaoq_f < TARGET_PAGE_SIZE) { + ret = do_page_zero(ctx); + assert(ret != DISAS_NEXT); + } else { + /* Always fetch the insn, even if nullified, so that we check + the page permissions for execute. */ + uint32_t insn = cpu_ldl_code(env, ctx->iaoq_f); + + /* Set up the IA queue for the next insn. + This will be overwritten by a branch. */ + if (ctx->iaoq_b == -1) { + ctx->iaoq_n = -1; + ctx->iaoq_n_var = get_temp(ctx); + tcg_gen_addi_tl(ctx->iaoq_n_var, cpu_iaoq_b, 4); } else { - /* Always fetch the insn, even if nullified, so that we check - the page permissions for execute. */ - uint32_t insn = cpu_ldl_code(env, ctx.iaoq_f); - - /* Set up the IA queue for the next insn. - This will be overwritten by a branch. */ - if (ctx.iaoq_b == -1) { - ctx.iaoq_n = -1; - ctx.iaoq_n_var = get_temp(&ctx); - tcg_gen_addi_tl(ctx.iaoq_n_var, cpu_iaoq_b, 4); - } else { - ctx.iaoq_n = ctx.iaoq_b + 4; - TCGV_UNUSED(ctx.iaoq_n_var); - } - - if (unlikely(ctx.null_cond.c == TCG_COND_ALWAYS)) { - ctx.null_cond.c = TCG_COND_NEVER; - ret = DISAS_NEXT; - } else { - ret = translate_one(&ctx, insn); - assert(ctx.null_lab == NULL); - } + ctx->iaoq_n = ctx->iaoq_b + 4; + TCGV_UNUSED(ctx->iaoq_n_var); } - for (i = 0; i < ctx.ntemps; ++i) { - tcg_temp_free(ctx.temps[i]); - TCGV_UNUSED(ctx.temps[i]); - } - ctx.ntemps = 0; - - /* If we see non-linear instructions, exhaust instruction count, - or run out of buffer space, stop generation. */ - /* ??? The non-linear instruction restriction is purely due to - the debugging dump. Otherwise we *could* follow unconditional - branches within the same page. */ - if (ret == DISAS_NEXT - && (ctx.iaoq_b != ctx.iaoq_f + 4 - || num_insns >= max_insns - || tcg_op_buf_full())) { - if (ctx.null_cond.c == TCG_COND_NEVER - || ctx.null_cond.c == TCG_COND_ALWAYS) { - nullify_set(&ctx, ctx.null_cond.c == TCG_COND_ALWAYS); - gen_goto_tb(&ctx, 0, ctx.iaoq_b, ctx.iaoq_n); - ret = DISAS_NORETURN; - } else { - ret = DISAS_IAQ_N_STALE; - } + if (unlikely(ctx->null_cond.c == TCG_COND_ALWAYS)) { + ctx->null_cond.c = TCG_COND_NEVER; + ret = DISAS_NEXT; + } else { + ret = translate_one(ctx, insn); + assert(ctx->null_lab == NULL); } + } - ctx.iaoq_f = ctx.iaoq_b; - ctx.iaoq_b = ctx.iaoq_n; - if (ret == DISAS_NORETURN || ret == DISAS_IAQ_N_UPDATED) { - break; - } - if (ctx.iaoq_f == -1) { - tcg_gen_mov_tl(cpu_iaoq_f, cpu_iaoq_b); - copy_iaoq_entry(cpu_iaoq_b, ctx.iaoq_n, ctx.iaoq_n_var); - nullify_save(&ctx); - ret = DISAS_IAQ_N_UPDATED; - break; - } - if (ctx.iaoq_b == -1) { - tcg_gen_mov_tl(cpu_iaoq_b, ctx.iaoq_n_var); - } - } while (ret == DISAS_NEXT); + /* Free any temporaries allocated. */ + for (i = 0, n = ctx->ntemps; i < n; ++i) { + tcg_temp_free(ctx->temps[i]); + TCGV_UNUSED(ctx->temps[i]); + } + ctx->ntemps = 0; - if (tb->cflags & CF_LAST_IO) { - gen_io_end(); + /* Advance the insn queue. */ + /* ??? The non-linear instruction restriction is purely due to + the debugging dump. Otherwise we *could* follow unconditional + branches within the same page. */ + if (ret == DISAS_NEXT && ctx->iaoq_b != ctx->iaoq_f + 4) { + if (ctx->null_cond.c == TCG_COND_NEVER + || ctx->null_cond.c == TCG_COND_ALWAYS) { + nullify_set(ctx, ctx->null_cond.c == TCG_COND_ALWAYS); + gen_goto_tb(ctx, 0, ctx->iaoq_b, ctx->iaoq_n); + ret = DISAS_NORETURN; + } else { + ret = DISAS_IAQ_N_STALE; + } } + ctx->iaoq_f = ctx->iaoq_b; + ctx->iaoq_b = ctx->iaoq_n; + ctx->base.is_jmp = ret; + + if (ret == DISAS_NORETURN || ret == DISAS_IAQ_N_UPDATED) { + return; + } + if (ctx->iaoq_f == -1) { + tcg_gen_mov_tl(cpu_iaoq_f, cpu_iaoq_b); + copy_iaoq_entry(cpu_iaoq_b, ctx->iaoq_n, ctx->iaoq_n_var); + nullify_save(ctx); + ctx->base.is_jmp = DISAS_IAQ_N_UPDATED; + } else if (ctx->iaoq_b == -1) { + tcg_gen_mov_tl(cpu_iaoq_b, ctx->iaoq_n_var); + } +} + +static void hppa_tr_tb_stop(DisasContextBase *dcbase, CPUState *cs) +{ + DisasContext *ctx = container_of(dcbase, DisasContext, base); - switch (ret) { + switch (ctx->base.is_jmp) { case DISAS_NORETURN: break; + case DISAS_TOO_MANY: case DISAS_IAQ_N_STALE: - copy_iaoq_entry(cpu_iaoq_f, ctx.iaoq_f, cpu_iaoq_f); - copy_iaoq_entry(cpu_iaoq_b, ctx.iaoq_b, cpu_iaoq_b); - nullify_save(&ctx); + copy_iaoq_entry(cpu_iaoq_f, ctx->iaoq_f, cpu_iaoq_f); + copy_iaoq_entry(cpu_iaoq_b, ctx->iaoq_b, cpu_iaoq_b); + nullify_save(ctx); /* FALLTHRU */ case DISAS_IAQ_N_UPDATED: - if (ctx.base.singlestep_enabled) { + if (ctx->base.singlestep_enabled) { gen_excp_1(EXCP_DEBUG); } else { tcg_gen_lookup_and_goto_ptr(cpu_iaoq_f); } break; default: - abort(); + g_assert_not_reached(); } - gen_tb_end(tb, num_insns); + /* We don't actually use this during normal translation, + but we should interact with the generic main loop. */ + ctx->base.pc_next = ctx->base.tb->pc + 4 * ctx->base.num_insns; +} - tb->size = num_insns * 4; - tb->icount = num_insns; +static void hppa_tr_disas_log(const DisasContextBase *dcbase, CPUState *cs) +{ + TranslationBlock *tb = dcbase->tb; -#ifdef DEBUG_DISAS - if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM) - && qemu_log_in_addr_range(tb->pc)) { - qemu_log_lock(); - switch (tb->pc) { - case 0x00: - qemu_log("IN:\n0x00000000: (null)\n\n"); - break; - case 0xb0: - qemu_log("IN:\n0x000000b0: light-weight-syscall\n\n"); - break; - case 0xe0: - qemu_log("IN:\n0x000000e0: set-thread-pointer-syscall\n\n"); - break; - case 0x100: - qemu_log("IN:\n0x00000100: syscall\n\n"); - break; - default: - qemu_log("IN: %s\n", lookup_symbol(tb->pc)); - log_target_disas(cs, tb->pc, tb->size, 1); - qemu_log("\n"); - break; - } - qemu_log_unlock(); + switch (tb->pc) { + case 0x00: + qemu_log("IN:\n0x00000000: (null)\n"); + break; + case 0xb0: + qemu_log("IN:\n0x000000b0: light-weight-syscall\n"); + break; + case 0xe0: + qemu_log("IN:\n0x000000e0: set-thread-pointer-syscall\n"); + break; + case 0x100: + qemu_log("IN:\n0x00000100: syscall\n"); + break; + default: + qemu_log("IN: %s\n", lookup_symbol(tb->pc)); + log_target_disas(cs, tb->pc, tb->size, 1); + break; } -#endif +} + +static const TranslatorOps hppa_tr_ops = { + .init_disas_context = hppa_tr_init_disas_context, + .tb_start = hppa_tr_tb_start, + .insn_start = hppa_tr_insn_start, + .breakpoint_check = hppa_tr_breakpoint_check, + .translate_insn = hppa_tr_translate_insn, + .tb_stop = hppa_tr_tb_stop, + .disas_log = hppa_tr_disas_log, +}; + +void gen_intermediate_code(CPUState *cs, struct TranslationBlock *tb) + +{ + DisasContext ctx; + translator_loop(&hppa_tr_ops, &ctx.base, cs, tb); } void restore_state_to_opc(CPUHPPAState *env, TranslationBlock *tb, |