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target/sh4: Use tcg_gen_lookup_and_goto_ptr

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Signed-off-by: Richard Henderson <rth@twiddle.net>
Message-Id: <20170718200255.31647-28-rth@twiddle.net>
[aurel32: fix whitespace]
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Richard Henderson 2017-07-18 10:02:52 -10:00 committed by Aurelien Jarno
parent 11b7aa234b
commit ec2eb22ebb
1 changed files with 20 additions and 10 deletions
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30
target/sh4/translate.c
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@ -230,12 +230,15 @@ static inline void gen_save_cpu_state(DisasContext *ctx, bool save_pc)
}
}
static inline bool use_exit_tb(DisasContext *ctx)
{
return (ctx->tbflags & GUSA_EXCLUSIVE) != 0;
}
static inline bool use_goto_tb(DisasContext *ctx, target_ulong dest)
{
if (unlikely(ctx->singlestep_enabled)) {
return false;
}
if (ctx->tbflags & GUSA_EXCLUSIVE) {
/* Use a direct jump if in same page and singlestep not enabled */
if (unlikely(ctx->singlestep_enabled || use_exit_tb(ctx))) {
return false;
}
#ifndef CONFIG_USER_ONLY
@ -248,28 +251,35 @@ static inline bool use_goto_tb(DisasContext *ctx, target_ulong dest)
static void gen_goto_tb(DisasContext *ctx, int n, target_ulong dest)
{
if (use_goto_tb(ctx, dest)) {
/* Use a direct jump if in same page and singlestep not enabled */
tcg_gen_goto_tb(n);
tcg_gen_movi_i32(cpu_pc, dest);
tcg_gen_exit_tb((uintptr_t)ctx->tb + n);
} else {
tcg_gen_movi_i32(cpu_pc, dest);
if (ctx->singlestep_enabled)
if (ctx->singlestep_enabled) {
gen_helper_debug(cpu_env);
tcg_gen_exit_tb(0);
} else if (use_exit_tb(ctx)) {
tcg_gen_exit_tb(0);
} else {
tcg_gen_lookup_and_goto_ptr(cpu_pc);
}
}
}
static void gen_jump(DisasContext * ctx)
{
if (ctx->delayed_pc == (uint32_t) - 1) {
if (ctx->delayed_pc == -1) {
/* Target is not statically known, it comes necessarily from a
delayed jump as immediate jump are conditinal jumps */
tcg_gen_mov_i32(cpu_pc, cpu_delayed_pc);
tcg_gen_discard_i32(cpu_delayed_pc);
if (ctx->singlestep_enabled)
if (ctx->singlestep_enabled) {
gen_helper_debug(cpu_env);
tcg_gen_exit_tb(0);
} else if (use_exit_tb(ctx)) {
tcg_gen_exit_tb(0);
} else {
tcg_gen_lookup_and_goto_ptr(cpu_pc);
}
} else {
gen_goto_tb(ctx, 0, ctx->delayed_pc);
}