This was fairly straightforward since it had already been converted
to DisasContextBase; just had to add TARGET_TOO_MANY to the switch
in tb_stop.
Reviewed-by: Richard Henderson <richard.hender...@linaro.org>
Signed-off-by: Emilio G. Cota <c...@braap.org>
---
target/sh4/translate.c | 171 +++++++++++++++++++++++++------------------------
1 file changed, 86 insertions(+), 85 deletions(-)
diff --git a/target/sh4/translate.c b/target/sh4/translate.c
index 012156b..58bdfeb 100644
--- a/target/sh4/translate.c
+++ b/target/sh4/translate.c
@@ -2258,126 +2258,127 @@ static int decode_gusa(DisasContext *ctx, CPUSH4State
*env, int *pmax_insns)
}
#endif
-void gen_intermediate_code(CPUState *cs, struct TranslationBlock *tb)
+static void sh4_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cs)
{
+ DisasContext *ctx = container_of(dcbase, DisasContext, base);
CPUSH4State *env = cs->env_ptr;
- DisasContext ctx;
- target_ulong pc_start;
- int num_insns;
- int max_insns;
-
- pc_start = tb->pc;
- ctx.base.pc_next = pc_start;
- ctx.tbflags = (uint32_t)tb->flags;
- ctx.envflags = tb->flags & TB_FLAG_ENVFLAGS_MASK;
- ctx.base.is_jmp = DISAS_NEXT;
- ctx.memidx = (ctx.tbflags & (1u << SR_MD)) == 0 ? 1 : 0;
+ int bound;
+
+ ctx->tbflags = (uint32_t)ctx->base.tb->flags;
+ ctx->envflags = ctx->base.tb->flags & TB_FLAG_ENVFLAGS_MASK;
+ ctx->memidx = (ctx->tbflags & (1u << SR_MD)) == 0 ? 1 : 0;
/* We don't know if the delayed pc came from a dynamic or static branch,
so assume it is a dynamic branch. */
- ctx.delayed_pc = -1; /* use delayed pc from env pointer */
- ctx.base.tb = tb;
- ctx.base.singlestep_enabled = cs->singlestep_enabled;
- ctx.features = env->features;
- ctx.has_movcal = (ctx.tbflags & TB_FLAG_PENDING_MOVCA);
- ctx.gbank = ((ctx.tbflags & (1 << SR_MD)) &&
- (ctx.tbflags & (1 << SR_RB))) * 0x10;
- ctx.fbank = ctx.tbflags & FPSCR_FR ? 0x10 : 0;
-
- max_insns = tb_cflags(tb) & CF_COUNT_MASK;
- if (max_insns == 0) {
- max_insns = CF_COUNT_MASK;
- }
- max_insns = MIN(max_insns, TCG_MAX_INSNS);
+ ctx->delayed_pc = -1; /* use delayed pc from env pointer */
+ ctx->features = env->features;
+ ctx->has_movcal = (ctx->tbflags & TB_FLAG_PENDING_MOVCA);
+ ctx->gbank = ((ctx->tbflags & (1 << SR_MD)) &&
+ (ctx->tbflags & (1 << SR_RB))) * 0x10;
+ ctx->fbank = ctx->tbflags & FPSCR_FR ? 0x10 : 0;
/* Since the ISA is fixed-width, we can bound by the number
of instructions remaining on the page. */
- num_insns = -(ctx.base.pc_next | TARGET_PAGE_MASK) / 2;
- max_insns = MIN(max_insns, num_insns);
-
- /* Single stepping means just that. */
- if (ctx.base.singlestep_enabled || singlestep) {
- max_insns = 1;
- }
-
- gen_tb_start(tb);
- num_insns = 0;
+ bound = -(ctx->base.pc_next | TARGET_PAGE_MASK) / 2;
+ ctx->base.max_insns = MIN(ctx->base.max_insns, bound);
+}
+static void sh4_tr_tb_start(DisasContextBase *dcbase, CPUState *cs)
+{
#ifdef CONFIG_USER_ONLY
- if (ctx.tbflags & GUSA_MASK) {
- num_insns = decode_gusa(&ctx, env, &max_insns);
+ DisasContext *ctx = container_of(dcbase, DisasContext, base);
+ CPUSH4State *env = cs->env_ptr;
+
+ if (ctx->tbflags & GUSA_MASK) {
+ ctx->base.num_insns = decode_gusa(ctx, env, &ctx->base.max_insns);
}
#endif
+}
- while (ctx.base.is_jmp == DISAS_NEXT
- && num_insns < max_insns
- && !tcg_op_buf_full()) {
- tcg_gen_insn_start(ctx.base.pc_next, ctx.envflags);
- num_insns++;
+static void sh4_tr_insn_start(DisasContextBase *dcbase, CPUState *cs)
+{
+ DisasContext *ctx = container_of(dcbase, DisasContext, base);
- if (unlikely(cpu_breakpoint_test(cs, ctx.base.pc_next, BP_ANY))) {
- /* We have hit a breakpoint - make sure PC is up-to-date */
- gen_save_cpu_state(&ctx, true);
- gen_helper_debug(cpu_env);
- ctx.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. */
- ctx.base.pc_next += 2;
- break;
- }
+ tcg_gen_insn_start(ctx->base.pc_next, ctx->envflags);
+}
- if (num_insns == max_insns && (tb_cflags(tb) & CF_LAST_IO)) {
- gen_io_start();
- }
+static bool sh4_tr_breakpoint_check(DisasContextBase *dcbase, CPUState *cs,
+ const CPUBreakpoint *bp)
+{
+ DisasContext *ctx = container_of(dcbase, DisasContext, base);
- ctx.opcode = cpu_lduw_code(env, ctx.base.pc_next);
- decode_opc(&ctx);
- ctx.base.pc_next += 2;
- }
- if (tb_cflags(tb) & CF_LAST_IO) {
- gen_io_end();
- }
+ /* We have hit a breakpoint - make sure PC is up-to-date */
+ gen_save_cpu_state(ctx, true);
+ gen_helper_debug(cpu_env);
+ ctx->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. */
+ ctx->base.pc_next += 2;
+ return true;
+}
+
+static void sh4_tr_translate_insn(DisasContextBase *dcbase, CPUState *cs)
+{
+ CPUSH4State *env = cs->env_ptr;
+ DisasContext *ctx = container_of(dcbase, DisasContext, base);
- if (ctx.tbflags & GUSA_EXCLUSIVE) {
+ ctx->opcode = cpu_lduw_code(env, ctx->base.pc_next);
+ decode_opc(ctx);
+ ctx->base.pc_next += 2;
+}
+
+static void sh4_tr_tb_stop(DisasContextBase *dcbase, CPUState *cs)
+{
+ DisasContext *ctx = container_of(dcbase, DisasContext, base);
+
+ if (ctx->tbflags & GUSA_EXCLUSIVE) {
/* Ending the region of exclusivity. Clear the bits. */
- ctx.envflags &= ~GUSA_MASK;
+ ctx->envflags &= ~GUSA_MASK;
}
- switch (ctx.base.is_jmp) {
+ switch (ctx->base.is_jmp) {
case DISAS_STOP:
- gen_save_cpu_state(&ctx, true);
- if (ctx.base.singlestep_enabled) {
+ gen_save_cpu_state(ctx, true);
+ if (ctx->base.singlestep_enabled) {
gen_helper_debug(cpu_env);
} else {
tcg_gen_exit_tb(0);
}
break;
case DISAS_NEXT:
- gen_save_cpu_state(&ctx, false);
- gen_goto_tb(&ctx, 0, ctx.base.pc_next);
+ case DISAS_TOO_MANY:
+ gen_save_cpu_state(ctx, false);
+ gen_goto_tb(ctx, 0, ctx->base.pc_next);
break;
case DISAS_NORETURN:
break;
default:
g_assert_not_reached();
}
+}
- gen_tb_end(tb, num_insns);
+static void sh4_tr_disas_log(const DisasContextBase *dcbase, CPUState *cs)
+{
+ qemu_log("IN:\n"); /* , lookup_symbol(dcbase->pc_first)); */
+ log_target_disas(cs, dcbase->pc_first, dcbase->tb->size);
+}
- tb->size = ctx.base.pc_next - pc_start;
- tb->icount = num_insns;
+static const TranslatorOps sh4_tr_ops = {
+ .init_disas_context = sh4_tr_init_disas_context,
+ .tb_start = sh4_tr_tb_start,
+ .insn_start = sh4_tr_insn_start,
+ .breakpoint_check = sh4_tr_breakpoint_check,
+ .translate_insn = sh4_tr_translate_insn,
+ .tb_stop = sh4_tr_tb_stop,
+ .disas_log = sh4_tr_disas_log,
+};
+
+void gen_intermediate_code(CPUState *cs, TranslationBlock *tb)
+{
+ DisasContext ctx;
-#ifdef DEBUG_DISAS
- if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)
- && qemu_log_in_addr_range(pc_start)) {
- qemu_log_lock();
- qemu_log("IN:\n"); /* , lookup_symbol(pc_start)); */
- log_target_disas(cs, pc_start, ctx.base.pc_next - pc_start);
- qemu_log("\n");
- qemu_log_unlock();
- }
-#endif
+ translator_loop(&sh4_tr_ops, &ctx.base, cs, tb);
}
void restore_state_to_opc(CPUSH4State *env, TranslationBlock *tb,
--
2.7.4
