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target/alpha: Split out gen_goto_tb 

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240424234436.995410-4-richard.henderson@linaro.org>
[PMD: Split bigger patch, part 5/5]
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20240503072014.24751-8-philmd@linaro.org>
This commit is contained in:
Richard Henderson 2024-05-03 09:20:11 +02:00
parent 39482c2edc
commit 82b60d2509
1 changed files with 16 additions and 37 deletions
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53
target/alpha/translate.c
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@ -425,15 +425,22 @@ static DisasJumpType gen_store_conditional(DisasContext *ctx, int ra, int rb,
return DISAS_NEXT; return DISAS_NEXT;
} }
static bool use_goto_tb(DisasContext *ctx, uint64_t dest) static void gen_goto_tb(DisasContext *ctx, int idx, int32_t disp)
{ {
return translator_use_goto_tb(&ctx->base, dest); uint64_t dest = ctx->base.pc_next + disp;
if (translator_use_goto_tb(&ctx->base, dest)) {
tcg_gen_goto_tb(idx);
tcg_gen_movi_i64(cpu_pc, dest);
tcg_gen_exit_tb(ctx->base.tb, idx);
} else {
tcg_gen_movi_i64(cpu_pc, dest);
tcg_gen_lookup_and_goto_ptr();
}
} }
static DisasJumpType gen_bdirect(DisasContext *ctx, int ra, int32_t disp) static DisasJumpType gen_bdirect(DisasContext *ctx, int ra, int32_t disp)
{ {
uint64_t dest = ctx->base.pc_next + disp;
if (ra != 31) { if (ra != 31) {
tcg_gen_movi_i64(ctx->ir[ra], ctx->base.pc_next); tcg_gen_movi_i64(ctx->ir[ra], ctx->base.pc_next);
} }
@ -442,43 +449,19 @@ static DisasJumpType gen_bdirect(DisasContext *ctx, int ra, int32_t disp)
if (disp == 0) { if (disp == 0) {
return DISAS_NEXT; return DISAS_NEXT;
} }
gen_goto_tb(ctx, 0, disp);
if (use_goto_tb(ctx, dest)) {
tcg_gen_goto_tb(0);
tcg_gen_movi_i64(cpu_pc, dest);
tcg_gen_exit_tb(ctx->base.tb, 0);
} else {
tcg_gen_movi_i64(cpu_pc, dest);
tcg_gen_lookup_and_goto_ptr();
}
return DISAS_NORETURN; return DISAS_NORETURN;
} }
static DisasJumpType gen_bcond_internal(DisasContext *ctx, TCGCond cond, static DisasJumpType gen_bcond_internal(DisasContext *ctx, TCGCond cond,
TCGv cmp, uint64_t imm, int32_t disp) TCGv cmp, uint64_t imm, int32_t disp)
{ {
uint64_t dest = ctx->base.pc_next + disp;
TCGLabel *lab_true = gen_new_label(); TCGLabel *lab_true = gen_new_label();
tcg_gen_brcondi_i64(cond, cmp, imm, lab_true); tcg_gen_brcondi_i64(cond, cmp, imm, lab_true);
if (use_goto_tb(ctx, ctx->base.pc_next)) { gen_goto_tb(ctx, 0, 0);
tcg_gen_goto_tb(0);
tcg_gen_movi_i64(cpu_pc, ctx->base.pc_next);
tcg_gen_exit_tb(ctx->base.tb, 0);
} else {
tcg_gen_movi_i64(cpu_pc, ctx->base.pc_next);
tcg_gen_lookup_and_goto_ptr();
}
gen_set_label(lab_true); gen_set_label(lab_true);
if (use_goto_tb(ctx, dest)) { gen_goto_tb(ctx, 1, disp);
tcg_gen_goto_tb(1);
tcg_gen_movi_i64(cpu_pc, dest);
tcg_gen_exit_tb(ctx->base.tb, 1);
} else {
tcg_gen_movi_i64(cpu_pc, dest);
tcg_gen_lookup_and_goto_ptr();
}
return DISAS_NORETURN; return DISAS_NORETURN;
} }
@ -2922,12 +2905,8 @@ static void alpha_tr_tb_stop(DisasContextBase *dcbase, CPUState *cpu)
case DISAS_NORETURN: case DISAS_NORETURN:
break; break;
case DISAS_TOO_MANY: case DISAS_TOO_MANY:
if (use_goto_tb(ctx, ctx->base.pc_next)) { gen_goto_tb(ctx, 0, 0);
tcg_gen_goto_tb(0); break;
tcg_gen_movi_i64(cpu_pc, ctx->base.pc_next);
tcg_gen_exit_tb(ctx->base.tb, 0);
}
/* FALLTHRU */
case DISAS_PC_STALE: case DISAS_PC_STALE:
tcg_gen_movi_i64(cpu_pc, ctx->base.pc_next); tcg_gen_movi_i64(cpu_pc, ctx->base.pc_next);
/* FALLTHRU */ /* FALLTHRU */