OpenE2K/qemu-e2k
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target: e2k: Add %pcntN condition.

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Denis Drakhnia 2020-12-10 14:52:56 +02:00 committed by Denis Drakhnia
parent bd027ff219
commit 64ac87f915
1 changed files with 25 additions and 19 deletions
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44
target/e2k/translate/plu.c
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@ -13,32 +13,38 @@ static void gen_get_lp(TCGv_i32 ret, uint16_t clp, int offset, TCGv_i32 lp[7])
void e2k_gen_cond_i32(DisasContext *ctx, TCGv_i32 ret, uint8_t psrc)
{
if (!GET_BIT(psrc, 6)) {
if (GET_FIELD(psrc, 0, 6) == 0) {
e2k_gen_lcntex(ret);
} else {
// TODO: spred
if (psrc & 0x80) {
if (psrc == 0xc0) {
// TODO: %bgrpred
qemu_log_mask(LOG_UNIMP, "%#lx: %%bgrpred is not implemented!\n", ctx->pc);
abort();
}
} else if (GET_FIELD(psrc, 5, 2) == 0x40) {
int val = GET_FIELD(psrc, 0, 5);
if (val == 0) {
// TODO: bgrpred
abort();
} else if (val <= 15) {
// TODO: rndpred
} else if ((psrc & 0xe0) == 0xc0) {
// TODO: %rndpredN
qemu_log_mask(LOG_UNIMP, "%#lx: %%rndpred is not implemented!\n", ctx->pc);
abort();
} else {
e2k_tr_gen_exception(ctx, E2K_EXCP_ILLOPN);
}
} else {
int reg = GET_FIELD(psrc, 0, 5);
TCGv_i64 t0 = tcg_temp_new_i64();
int idx = extract8(psrc, 0, 5);
if (psrc == 0) {
// %lcntex
e2k_gen_lcntex(ret);
} else if ((psrc & 0x40) == 0) {
// TODO: %spredMASK
qemu_log_mask(LOG_UNIMP, "%#lx: %%spred is not implemented!\n", ctx->pc);
abort();
} else if ((psrc & 0x60) == 0x60) {
// %predN
e2k_gen_preg_i32(ret, idx);
} else {
// %pcntN
TCGv_i32 t0 = tcg_temp_new_i32();
e2k_gen_preg_i64(t0, reg);
tcg_gen_extrl_i64_i32(ret, t0);
tcg_temp_free_i64(t0);
e2k_gen_pcnt_i32(t0);
tcg_gen_setcondi_i32(TCG_COND_LEU, ret, t0, idx);
tcg_temp_free_i32(t0);
}
}
}