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qemu-e2k
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e2k: gen return only for ctpr3

This commit is contained in:
Denis Drakhnia 2023-12-31 09:12:39 +02:00
parent 335042809b
commit d23cf508ba
1 changed files with 13 additions and 10 deletions
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23
target/e2k/translate.c
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@ -426,6 +426,7 @@ typedef struct {
target_ulong target;
TCGv_i64 ctpr;
} u;
int ctpr_index;
int wbs;
uint8_t cond_type;
uint8_t psrc;
@ -1063,12 +1064,12 @@ static inline void decode_ct_cond(DisasContext *ctx, const UnpackedBundle *raw)
{
ctx->ct.type = CT_NONE;
ctx->ct.cond_type = 0;
int ctpr = extract32(raw->ss, 10, 2);
if (ctpr != 0) {
ctx->ct.ctpr_index = extract32(raw->ss, 10, 2);
if (ctx->ct.ctpr_index != 0) {
if (ctx->ct.type == CT_NONE) {
ctx->ct.type = CT_JUMP;
}
ctx->ct.u.ctpr = cpu_ctprs[ctpr - 1];
ctx->ct.u.ctpr = cpu_ctprs[ctx->ct.ctpr_index - 1];
}
ctx->ct.psrc = extract32(raw->ss, 0, 5);
ctx->ct.cond_type = extract32(raw->ss, 5, 4);
@ -7437,18 +7438,20 @@ static void do_branch(DisasContext *ctx, target_ulong pc_next)
break;
case CT_JUMP: {
TCGLabel *l0 = gen_new_label();
TCGLabel *l1 = gen_new_label();
TCGv_i64 t0 = tcg_temp_new_i64();
gen_ctpr_tag(t0, ctx->ct.u.ctpr);
tcg_gen_brcondi_i64(TCG_COND_EQ, t0, CTPR_TAG_DISP, l0);
tcg_gen_brcondi_i64(TCG_COND_EQ, t0, CTPR_TAG_RETURN, l1);
// TODO: ldisp or sdisp
gen_excp_illopc();
gen_set_label(l1);
gen_helper_return(tcg_env);
if (ctx->ct.ctpr_index == 3) {
TCGLabel *l1 = gen_new_label();
tcg_gen_brcondi_i64(TCG_COND_EQ, t0, CTPR_TAG_RETURN, l1);
gen_excp_illopc();
gen_set_label(l1);
gen_helper_return(tcg_env);
} else {
gen_excp_illopc();
}
gen_set_label(l0);
gen_goto_ctpr_disp(ctx->ct.u.ctpr);