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Diffstat (limited to 'target/openrisc/translate.c')
-rw-r--r--target/openrisc/translate.c163
1 files changed, 79 insertions, 84 deletions
diff --git a/target/openrisc/translate.c b/target/openrisc/translate.c
index b37414f..7cf29cd 100644
--- a/target/openrisc/translate.c
+++ b/target/openrisc/translate.c
@@ -1520,46 +1520,22 @@ static void disas_openrisc_insn(DisasContext *dc, OpenRISCCPU *cpu)
}
}
-void gen_intermediate_code(CPUState *cs, struct TranslationBlock *tb)
+static void openrisc_tr_init_disas_context(DisasContextBase *dcb, CPUState *cs)
{
+ DisasContext *dc = container_of(dcb, DisasContext, base);
CPUOpenRISCState *env = cs->env_ptr;
- OpenRISCCPU *cpu = openrisc_env_get_cpu(env);
- struct DisasContext ctx, *dc = &ctx;
- uint32_t pc_start;
- uint32_t next_page_start;
- int num_insns;
- int max_insns;
-
- pc_start = tb->pc;
-
- dc->base.tb = tb;
- dc->base.singlestep_enabled = cs->singlestep_enabled;
- dc->base.pc_next = pc_start;
- dc->base.is_jmp = DISAS_NEXT;
+ int bound;
- dc->mem_idx = cpu_mmu_index(&cpu->env, false);
+ dc->mem_idx = cpu_mmu_index(env, false);
dc->tb_flags = dc->base.tb->flags;
dc->delayed_branch = (dc->tb_flags & TB_FLAGS_DFLAG) != 0;
+ bound = -(dc->base.pc_first | TARGET_PAGE_MASK) / 4;
+ dc->base.max_insns = MIN(dc->base.max_insns, bound);
+}
- next_page_start = (pc_start & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE;
- num_insns = 0;
- max_insns = tb_cflags(tb) & CF_COUNT_MASK;
-
- if (max_insns == 0) {
- max_insns = CF_COUNT_MASK;
- }
- if (max_insns > TCG_MAX_INSNS) {
- max_insns = TCG_MAX_INSNS;
- }
-
- if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)
- && qemu_log_in_addr_range(pc_start)) {
- qemu_log_lock();
- qemu_log("----------------\n");
- qemu_log("IN: %s\n", lookup_symbol(pc_start));
- }
-
- gen_tb_start(tb);
+static void openrisc_tr_tb_start(DisasContextBase *db, CPUState *cs)
+{
+ DisasContext *dc = container_of(db, DisasContext, base);
/* Allow the TCG optimizer to see that R0 == 0,
when it's true, which is the common case. */
@@ -1568,50 +1544,55 @@ void gen_intermediate_code(CPUState *cs, struct TranslationBlock *tb)
} else {
cpu_R[0] = cpu_R0;
}
+}
- do {
- tcg_gen_insn_start(dc->base.pc_next, (dc->delayed_branch ? 1 : 0)
- | (num_insns ? 2 : 0));
- num_insns++;
+static void openrisc_tr_insn_start(DisasContextBase *dcbase, CPUState *cs)
+{
+ DisasContext *dc = container_of(dcbase, DisasContext, base);
- if (unlikely(cpu_breakpoint_test(cs, dc->base.pc_next, BP_ANY))) {
- tcg_gen_movi_tl(cpu_pc, dc->base.pc_next);
- gen_exception(dc, EXCP_DEBUG);
- dc->base.is_jmp = DISAS_NORETURN;
- /* The address covered by the breakpoint must be included in
- [tb->pc, tb->pc + tb->size) in order to for it to be
- properly cleared -- thus we increment the PC here so that
- the logic setting tb->size below does the right thing. */
- dc->base.pc_next += 4;
- break;
- }
+ tcg_gen_insn_start(dc->base.pc_next, (dc->delayed_branch ? 1 : 0)
+ | (dc->base.num_insns > 1 ? 2 : 0));
+}
- if (num_insns == max_insns && (tb_cflags(tb) & CF_LAST_IO)) {
- gen_io_start();
- }
- disas_openrisc_insn(dc, cpu);
- dc->base.pc_next += 4;
-
- /* delay slot */
- if (dc->delayed_branch) {
- dc->delayed_branch--;
- if (!dc->delayed_branch) {
- tcg_gen_mov_tl(cpu_pc, jmp_pc);
- tcg_gen_discard_tl(jmp_pc);
- dc->base.is_jmp = DISAS_UPDATE;
- break;
- }
+static bool openrisc_tr_breakpoint_check(DisasContextBase *dcbase, CPUState *cs,
+ const CPUBreakpoint *bp)
+{
+ DisasContext *dc = container_of(dcbase, DisasContext, base);
+
+ tcg_gen_movi_tl(cpu_pc, dc->base.pc_next);
+ gen_exception(dc, EXCP_DEBUG);
+ dc->base.is_jmp = DISAS_NORETURN;
+ /* The address covered by the breakpoint must be included in
+ [tb->pc, tb->pc + tb->size) in order to for it to be
+ properly cleared -- thus we increment the PC here so that
+ the logic setting tb->size below does the right thing. */
+ dc->base.pc_next += 4;
+ return true;
+}
+
+static void openrisc_tr_translate_insn(DisasContextBase *dcbase, CPUState *cs)
+{
+ DisasContext *dc = container_of(dcbase, DisasContext, base);
+ OpenRISCCPU *cpu = OPENRISC_CPU(cs);
+
+ disas_openrisc_insn(dc, cpu);
+ dc->base.pc_next += 4;
+
+ /* delay slot */
+ if (dc->delayed_branch) {
+ dc->delayed_branch--;
+ if (!dc->delayed_branch) {
+ tcg_gen_mov_tl(cpu_pc, jmp_pc);
+ tcg_gen_discard_tl(jmp_pc);
+ dc->base.is_jmp = DISAS_UPDATE;
+ return;
}
- } while (!dc->base.is_jmp
- && !tcg_op_buf_full()
- && !dc->base.singlestep_enabled
- && !singlestep
- && (dc->base.pc_next < next_page_start)
- && num_insns < max_insns);
-
- if (tb_cflags(tb) & CF_LAST_IO) {
- gen_io_end();
}
+}
+
+static void openrisc_tr_tb_stop(DisasContextBase *dcbase, CPUState *cs)
+{
+ DisasContext *dc = container_of(dcbase, DisasContext, base);
if ((dc->tb_flags & TB_FLAGS_DFLAG ? 1 : 0) != (dc->delayed_branch != 0)) {
tcg_gen_movi_i32(cpu_dflag, dc->delayed_branch != 0);
@@ -1626,10 +1607,9 @@ void gen_intermediate_code(CPUState *cs, struct TranslationBlock *tb)
gen_exception(dc, EXCP_DEBUG);
} else {
switch (dc->base.is_jmp) {
- case DISAS_NEXT:
+ case DISAS_TOO_MANY:
gen_goto_tb(dc, 0, dc->base.pc_next);
break;
- default:
case DISAS_NORETURN:
case DISAS_JUMP:
case DISAS_TB_JUMP:
@@ -1639,20 +1619,35 @@ void gen_intermediate_code(CPUState *cs, struct TranslationBlock *tb)
to find the next TB */
tcg_gen_exit_tb(0);
break;
+ default:
+ g_assert_not_reached();
}
}
+}
- gen_tb_end(tb, num_insns);
+static void openrisc_tr_disas_log(const DisasContextBase *dcbase, CPUState *cs)
+{
+ DisasContext *s = container_of(dcbase, DisasContext, base);
- tb->size = dc->base.pc_next - pc_start;
- tb->icount = num_insns;
+ qemu_log("IN: %s\n", lookup_symbol(s->base.pc_first));
+ log_target_disas(cs, s->base.pc_first, s->base.tb->size);
+}
- if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)
- && qemu_log_in_addr_range(pc_start)) {
- log_target_disas(cs, pc_start, tb->size);
- qemu_log("\n");
- qemu_log_unlock();
- }
+static const TranslatorOps openrisc_tr_ops = {
+ .init_disas_context = openrisc_tr_init_disas_context,
+ .tb_start = openrisc_tr_tb_start,
+ .insn_start = openrisc_tr_insn_start,
+ .breakpoint_check = openrisc_tr_breakpoint_check,
+ .translate_insn = openrisc_tr_translate_insn,
+ .tb_stop = openrisc_tr_tb_stop,
+ .disas_log = openrisc_tr_disas_log,
+};
+
+void gen_intermediate_code(CPUState *cs, struct TranslationBlock *tb)
+{
+ DisasContext ctx;
+
+ translator_loop(&openrisc_tr_ops, &ctx.base, cs, tb);
}
void openrisc_cpu_dump_state(CPUState *cs, FILE *f,
generated by cgit v1.1 at 2024-12-30 20:08:20 +0000