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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (c) 2021 Loongson Technology Corporation Limited
*/
/* bit0(signaling/quiet) bit1(lt) bit2(eq) bit3(un) bit4(neq) */
static uint32_t get_fcmp_flags(DisasContext *ctx, int cond)
{
uint32_t flags = 0;
/*check cond , cond =[0-8,10,12] */
if ((cond > 8) &&(cond != 10) && (cond != 12)) {
return -1;
}
if (cond & 0x1) {
flags |= FCMP_LT;
}
if (cond & 0x2) {
flags |= FCMP_EQ;
}
if (cond & 0x4) {
flags |= FCMP_UN;
}
if (cond & 0x8) {
flags |= FCMP_GT | FCMP_LT;
}
return flags;
}
static bool trans_fcmp_cond_s(DisasContext *ctx, arg_fcmp_cond_s *a)
{
TCGv var, src1, src2;
uint32_t flags = get_fcmp_flags(ctx, a->fcond >>1);
void (*fn)(TCGv, TCGv_env, TCGv, TCGv, TCGv_i32);
if (flags == -1) {
generate_exception(ctx, EXCCODE_INE);
return true;
}
if (!avail_FP_SP(ctx)) {
return false;
}
CHECK_FPE;
var = tcg_temp_new();
src1 = get_fpr(ctx, a->fj);
src2 = get_fpr(ctx, a->fk);
fn = (a->fcond & 1 ? gen_helper_fcmp_s_s : gen_helper_fcmp_c_s);
fn(var, tcg_env, src1, src2, tcg_constant_i32(flags));
tcg_gen_st8_tl(var, tcg_env, offsetof(CPULoongArchState, cf[a->cd]));
return true;
}
static bool trans_fcmp_cond_d(DisasContext *ctx, arg_fcmp_cond_d *a)
{
TCGv var, src1, src2;
uint32_t flags = get_fcmp_flags(ctx, a->fcond >> 1);
void (*fn)(TCGv, TCGv_env, TCGv, TCGv, TCGv_i32);
if (flags == -1) {
generate_exception(ctx, EXCCODE_INE);
return true;
}
if (!avail_FP_DP(ctx)) {
return false;
}
CHECK_FPE;
var = tcg_temp_new();
src1 = get_fpr(ctx, a->fj);
src2 = get_fpr(ctx, a->fk);
fn = (a->fcond & 1 ? gen_helper_fcmp_s_d : gen_helper_fcmp_c_d);
fn(var, tcg_env, src1, src2, tcg_constant_i32(flags));
tcg_gen_st8_tl(var, tcg_env, offsetof(CPULoongArchState, cf[a->cd]));
return true;
}
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