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qemu-e2k
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e2k: movep tags

This commit is contained in:
Denis Drakhnia 2024-01-05 13:27:51 +02:00
parent 6e72472145
commit 8f19d2e3fa
1 changed files with 19 additions and 12 deletions
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31
target/e2k/translate.c
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@ -2020,6 +2020,8 @@ static void gen_plu(DisasContext *ctx)
switch (opc) {
case 0: /* andp */
case 1: /* landp */
// TODO: gen excp if clp tries to read result from mlp
if (ctx->enable_tags) {
TCGv_i32 t0 = tcg_temp_new_i32();
uint32_t tbl;
@ -2027,9 +2029,10 @@ static void gen_plu(DisasContext *ctx)
tcg_gen_shli_i32(t0, p0, 2);
tcg_gen_or_i32(t0, t0, p1);
tcg_gen_shli_i32(t0, t0, 1);
// a=11 a=10 a=01 a=00
// andp: 0b10101010_10101010_10100100_10100000
// landp: 0b10101010_10101010_10100100_00000000
// a: 11111111 10101010 01010101 00000000
// b: 11100100 11100100 11100100 11100100
// andp: 10101010 10101010 10100100 10100000
// landp: 10101010 10101010 10100100 00000000
if (opc == 0) {
tbl = 0xaaaaa4a0;
} else {
@ -2046,17 +2049,21 @@ static void gen_plu(DisasContext *ctx)
}
break;
case 3: { /* movep */
// FIXME: clp cannot read result of movep???
tcg_gen_and_i32(lp[4 + i], p0, p1);
// a: 11111111 10101010 01010101 00000000
// b: 11100100 11100100 11100100 xxxxxxxx
// dst: 11100100 11100100 xxxxxxxx 11100100
// movep: 10101010 10101010 10100100 10100100
if (vdst) {
TCGv_i32 t0 = tcg_constant_i32(0);
TCGv_i32 t1 = tcg_temp_new_i32();
TCGv_i32 t2 = tcg_temp_new_i32();
TCGv_i32 z = tcg_constant_i32(0);
TCGv_i32 t0 = tcg_temp_new_i32();
gen_preg_i32(ctx, t1, pdst);
tcg_gen_movcond_i32(TCG_COND_NE, t2, p0, t0, p1, t1);
gen_preg_set_i32(ctx, pdst, t2);
gen_preg_i32(ctx, t0, pdst);
tcg_gen_movcond_i32(TCG_COND_EQ, t0, p0, z, t0, p1);
if (ctx->enable_tags) {
TCGv_i32 inv = tcg_constant_i32(2);
tcg_gen_movcond_i32(TCG_COND_LTU, t0, p0, inv, t0, inv);
}
gen_preg_set_i32(ctx, pdst, t0);
}
break;
}