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target/sh4: Drop check for singlestep_enabled

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GDB single-stepping is now handled generically.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2021-07-19 14:54:55 -10:00
parent 2df7a3618a
commit 52df5adce9
3 changed files with 3 additions and 17 deletions
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1
target/sh4/helper.h
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@ -3,7 +3,6 @@ DEF_HELPER_1(raise_illegal_instruction, noreturn, env)
DEF_HELPER_1(raise_slot_illegal_instruction, noreturn, env)
DEF_HELPER_1(raise_fpu_disable, noreturn, env)
DEF_HELPER_1(raise_slot_fpu_disable, noreturn, env)
DEF_HELPER_1(debug, noreturn, env)
DEF_HELPER_1(sleep, noreturn, env)
DEF_HELPER_2(trapa, noreturn, env, i32)
DEF_HELPER_1(exclusive, noreturn, env)

5
target/sh4/op_helper.c
View File

@ -81,11 +81,6 @@ void helper_raise_slot_fpu_disable(CPUSH4State *env)
raise_exception(env, 0x820, 0);
}
void helper_debug(CPUSH4State *env)
{
raise_exception(env, EXCP_DEBUG, 0);
}
void helper_sleep(CPUSH4State *env)
{
CPUState *cs = env_cpu(env);

14
target/sh4/translate.c
View File

@ -240,9 +240,7 @@ static void gen_goto_tb(DisasContext *ctx, int n, target_ulong dest)
tcg_gen_exit_tb(ctx->base.tb, n);
} else {
tcg_gen_movi_i32(cpu_pc, dest);
if (ctx->base.singlestep_enabled) {
gen_helper_debug(cpu_env);
} else if (use_exit_tb(ctx)) {
if (use_exit_tb(ctx)) {
tcg_gen_exit_tb(NULL, 0);
} else {
tcg_gen_lookup_and_goto_ptr();
@ -258,9 +256,7 @@ static void gen_jump(DisasContext * ctx)
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->base.singlestep_enabled) {
gen_helper_debug(cpu_env);
} else if (use_exit_tb(ctx)) {
if (use_exit_tb(ctx)) {
tcg_gen_exit_tb(NULL, 0);
} else {
tcg_gen_lookup_and_goto_ptr();
@ -2324,11 +2320,7 @@ static void sh4_tr_tb_stop(DisasContextBase *dcbase, CPUState *cs)
switch (ctx->base.is_jmp) {
case DISAS_STOP:
gen_save_cpu_state(ctx, true);
if (ctx->base.singlestep_enabled) {
gen_helper_debug(cpu_env);
} else {
tcg_gen_exit_tb(NULL, 0);
}
tcg_gen_exit_tb(NULL, 0);
break;
case DISAS_NEXT:
case DISAS_TOO_MANY: