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qemu-e2k
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e2k: check mrgc tag

This commit is contained in:
Denis Drakhnia 2024-01-03 12:03:38 +02:00
parent ca5b13ca4e
commit bec013fab1
1 changed files with 28 additions and 13 deletions
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41
target/e2k/translate.c
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@ -2486,20 +2486,21 @@ static inline void gen_am_cond_i32(DisasContext *ctx, TCGv_i32 ret, int chan,
tcg_gen_xori_i32(ret, t0, GET_BIT(rlp, 7 + chan % 3));
}
static inline void gen_mrgc_i32(DisasContext *ctx, int chan, TCGv_i32 ret)
static inline void gen_mrgc_i32(Alop *alop, TCGv_i32 ret)
{
uint16_t rlp = find_mrgc(ctx, chan);
uint16_t rlp = find_mrgc(alop->ctx, alop->chan);
if (rlp) {
int psrc = extract16(rlp, 0, 7);
if (GET_BIT(rlp, 7 + chan % 3)) {
TCGv_i32 t0 = tcg_temp_new_i32();
gen_cond_i32(alop->ctx, ret, psrc);
gen_cond_i32(ctx, t0, psrc);
tcg_gen_setcondi_i32(TCG_COND_EQ, ret, t0, 0);
} else {
gen_cond_i32(ctx, ret, psrc);
if (alop->ctx->enable_tags && !alop->als.sm) {
gen_preg_check_tag(alop->ctx, ret);
}
if (GET_BIT(rlp, 7 + alop->chan % 3)) {
tcg_gen_xori_i32(ret, ret, 1);
}
} else {
/* Undefined behavior if MRGC is not provided but CPU returns src2. */
@ -2870,10 +2871,24 @@ IMPL_GEN_CMPAND(gen_cmpandledb, d, TCG_COND_LE)
#define glue4(a, b, c, d) glue(glue(a, b), glue(c, d))
static inline void gen_merge_i32(TCGv_i32 ret, TCGv_i32 src1, TCGv_i32 src2,
TCGv_i32 cond)
static inline void gen_merge_tag_i32(DisasContext *ctx, TCGv_i32 ret,
TCGv_i32 src1, TCGv_i32 src2, TCGv_i32 cond)
{
TCGv_i32 zero = tcg_constant_i32(0);
tcg_gen_movcond_i32(TCG_COND_EQ, ret, cond, zero, src1, src2);
if (ctx->enable_tags) {
tcg_gen_movcond_i32(TCG_COND_LT, ret, cond, tcg_constant_i32(2),
ret, tcg_constant_i32(E2K_TAG_NON_NUMBER128));
}
}
static inline void gen_merge_i32(TCGv_i32 ret, TCGv_i32 src1, TCGv_i32 src2,
TCGv_i32 cond)
{
TCGv_i32 zero = tcg_constant_i32(0);
tcg_gen_movcond_i32(TCG_COND_EQ, ret, cond, zero, src1, src2);
}
@ -2895,8 +2910,8 @@ static inline void gen_merge_i64(TCGv_i64 ret, TCGv_i64 src1, TCGv_i64 src2,
tagged(S) b = gen_tagged_src2(S, alop); \
TCGv_i32 t0 = tcg_temp_new_i32(); \
\
gen_mrgc_i32(alop->ctx, alop->chan, t0); \
gen_merge_i32(r.tag, a.tag, b.tag, t0); \
gen_mrgc_i32(alop, t0); \
gen_merge_tag_i32(alop->ctx, r.tag, a.tag, b.tag, t0); \
gen_tag1(S, r, r); \
call(S, gen_merge, r.val, a.val, b.val, t0); \
gen_al_result(S, alop, r); \
@ -5885,7 +5900,7 @@ typedef enum {
case ICOMB_RSUB: glue(tcg_gen_sub_, S)(ret, arg2, arg1); break; \
case ICOMB_MERGE: { \
TCGv_i32 t0 = tcg_temp_new_i32(); \
gen_mrgc_i32(alop->ctx, alop->chan, t0); \
gen_mrgc_i32(alop, t0); \
glue(gen_merge_, S)(ret, arg1, arg2, t0); \
break; \
} \