/*
 *  Copyright(c) 2019-2021 Qualcomm Innovation Center, Inc. All Rights Reserved.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

#include "qemu/osdep.h"
#include "qemu.h"
#include "exec/helper-proto.h"
#include "fpu/softfloat.h"
#include "cpu.h"
#include "internal.h"
#include "macros.h"
#include "arch.h"
#include "hex_arch_types.h"
#include "fma_emu.h"
#include "conv_emu.h"

#define SF_BIAS        127
#define SF_MANTBITS    23

/* Exceptions processing helpers */
static void QEMU_NORETURN do_raise_exception_err(CPUHexagonState *env,
                                                 uint32_t exception,
                                                 uintptr_t pc)
{
    CPUState *cs = CPU(hexagon_env_get_cpu(env));
    qemu_log_mask(CPU_LOG_INT, "%s: %d\n", __func__, exception);
    cs->exception_index = exception;
    cpu_loop_exit_restore(cs, pc);
}

void QEMU_NORETURN HELPER(raise_exception)(CPUHexagonState *env, uint32_t excp)
{
    do_raise_exception_err(env, excp, 0);
}

static inline void log_reg_write(CPUHexagonState *env, int rnum,
                                 target_ulong val, uint32_t slot)
{
    HEX_DEBUG_LOG("log_reg_write[%d] = " TARGET_FMT_ld " (0x" TARGET_FMT_lx ")",
                  rnum, val, val);
    if (val == env->gpr[rnum]) {
        HEX_DEBUG_LOG(" NO CHANGE");
    }
    HEX_DEBUG_LOG("\n");

    env->new_value[rnum] = val;
#if HEX_DEBUG
    /* Do this so HELPER(debug_commit_end) will know */
    env->reg_written[rnum] = 1;
#endif
}

static inline void log_pred_write(CPUHexagonState *env, int pnum,
                                  target_ulong val)
{
    HEX_DEBUG_LOG("log_pred_write[%d] = " TARGET_FMT_ld
                  " (0x" TARGET_FMT_lx ")\n",
                  pnum, val, val);

    /* Multiple writes to the same preg are and'ed together */
    if (env->pred_written & (1 << pnum)) {
        env->new_pred_value[pnum] &= val & 0xff;
    } else {
        env->new_pred_value[pnum] = val & 0xff;
        env->pred_written |= 1 << pnum;
    }
}

static inline void log_store32(CPUHexagonState *env, target_ulong addr,
                               target_ulong val, int width, int slot)
{
    HEX_DEBUG_LOG("log_store%d(0x" TARGET_FMT_lx
                  ", %" PRId32 " [0x08%" PRIx32 "])\n",
                  width, addr, val, val);
    env->mem_log_stores[slot].va = addr;
    env->mem_log_stores[slot].width = width;
    env->mem_log_stores[slot].data32 = val;
}

static inline void log_store64(CPUHexagonState *env, target_ulong addr,
                               int64_t val, int width, int slot)
{
    HEX_DEBUG_LOG("log_store%d(0x" TARGET_FMT_lx
                  ", %" PRId64 " [0x016%" PRIx64 "])\n",
                   width, addr, val, val);
    env->mem_log_stores[slot].va = addr;
    env->mem_log_stores[slot].width = width;
    env->mem_log_stores[slot].data64 = val;
}

static inline void write_new_pc(CPUHexagonState *env, target_ulong addr)
{
    HEX_DEBUG_LOG("write_new_pc(0x" TARGET_FMT_lx ")\n", addr);

    /*
     * If more than one branch is taken in a packet, only the first one
     * is actually done.
     */
    if (env->branch_taken) {
        HEX_DEBUG_LOG("INFO: multiple branches taken in same packet, "
                      "ignoring the second one\n");
    } else {
        fCHECK_PCALIGN(addr);
        env->branch_taken = 1;
        env->next_PC = addr;
    }
}

#if HEX_DEBUG
/* Handy place to set a breakpoint */
void HELPER(debug_start_packet)(CPUHexagonState *env)
{
    HEX_DEBUG_LOG("Start packet: pc = 0x" TARGET_FMT_lx "\n",
                  env->gpr[HEX_REG_PC]);

    for (int i = 0; i < TOTAL_PER_THREAD_REGS; i++) {
        env->reg_written[i] = 0;
    }
}
#endif

static inline int32_t new_pred_value(CPUHexagonState *env, int pnum)
{
    return env->new_pred_value[pnum];
}

#if HEX_DEBUG
/* Checks for bookkeeping errors between disassembly context and runtime */
void HELPER(debug_check_store_width)(CPUHexagonState *env, int slot, int check)
{
    if (env->mem_log_stores[slot].width != check) {
        HEX_DEBUG_LOG("ERROR: %d != %d\n",
                      env->mem_log_stores[slot].width, check);
        g_assert_not_reached();
    }
}
#endif

void HELPER(commit_store)(CPUHexagonState *env, int slot_num)
{
    switch (env->mem_log_stores[slot_num].width) {
    case 1:
        put_user_u8(env->mem_log_stores[slot_num].data32,
                    env->mem_log_stores[slot_num].va);
        break;
    case 2:
        put_user_u16(env->mem_log_stores[slot_num].data32,
                     env->mem_log_stores[slot_num].va);
        break;
    case 4:
        put_user_u32(env->mem_log_stores[slot_num].data32,
                     env->mem_log_stores[slot_num].va);
        break;
    case 8:
        put_user_u64(env->mem_log_stores[slot_num].data64,
                     env->mem_log_stores[slot_num].va);
        break;
    default:
        g_assert_not_reached();
    }
}

#if HEX_DEBUG
static void print_store(CPUHexagonState *env, int slot)
{
    if (!(env->slot_cancelled & (1 << slot))) {
        uint8_t width = env->mem_log_stores[slot].width;
        if (width == 1) {
            uint32_t data = env->mem_log_stores[slot].data32 & 0xff;
            HEX_DEBUG_LOG("\tmemb[0x" TARGET_FMT_lx "] = %" PRId32
                          " (0x%02" PRIx32 ")\n",
                          env->mem_log_stores[slot].va, data, data);
        } else if (width == 2) {
            uint32_t data = env->mem_log_stores[slot].data32 & 0xffff;
            HEX_DEBUG_LOG("\tmemh[0x" TARGET_FMT_lx "] = %" PRId32
                          " (0x%04" PRIx32 ")\n",
                          env->mem_log_stores[slot].va, data, data);
        } else if (width == 4) {
            uint32_t data = env->mem_log_stores[slot].data32;
            HEX_DEBUG_LOG("\tmemw[0x" TARGET_FMT_lx "] = %" PRId32
                          " (0x%08" PRIx32 ")\n",
                          env->mem_log_stores[slot].va, data, data);
        } else if (width == 8) {
            HEX_DEBUG_LOG("\tmemd[0x" TARGET_FMT_lx "] = %" PRId64
                          " (0x%016" PRIx64 ")\n",
                          env->mem_log_stores[slot].va,
                          env->mem_log_stores[slot].data64,
                          env->mem_log_stores[slot].data64);
        } else {
            HEX_DEBUG_LOG("\tBad store width %d\n", width);
            g_assert_not_reached();
        }
    }
}

/* This function is a handy place to set a breakpoint */
void HELPER(debug_commit_end)(CPUHexagonState *env, int has_st0, int has_st1)
{
    bool reg_printed = false;
    bool pred_printed = false;
    int i;

    HEX_DEBUG_LOG("Packet committed: pc = 0x" TARGET_FMT_lx "\n",
                  env->this_PC);
    HEX_DEBUG_LOG("slot_cancelled = %d\n", env->slot_cancelled);

    for (i = 0; i < TOTAL_PER_THREAD_REGS; i++) {
        if (env->reg_written[i]) {
            if (!reg_printed) {
                HEX_DEBUG_LOG("Regs written\n");
                reg_printed = true;
            }
            HEX_DEBUG_LOG("\tr%d = " TARGET_FMT_ld " (0x" TARGET_FMT_lx ")\n",
                          i, env->new_value[i], env->new_value[i]);
        }
    }

    for (i = 0; i < NUM_PREGS; i++) {
        if (env->pred_written & (1 << i)) {
            if (!pred_printed) {
                HEX_DEBUG_LOG("Predicates written\n");
                pred_printed = true;
            }
            HEX_DEBUG_LOG("\tp%d = 0x" TARGET_FMT_lx "\n",
                          i, env->new_pred_value[i]);
        }
    }

    if (has_st0 || has_st1) {
        HEX_DEBUG_LOG("Stores\n");
        if (has_st0) {
            print_store(env, 0);
        }
        if (has_st1) {
            print_store(env, 1);
        }
    }

    HEX_DEBUG_LOG("Next PC = " TARGET_FMT_lx "\n", env->next_PC);
    HEX_DEBUG_LOG("Exec counters: pkt = " TARGET_FMT_lx
                  ", insn = " TARGET_FMT_lx
                  "\n",
                  env->gpr[HEX_REG_QEMU_PKT_CNT],
                  env->gpr[HEX_REG_QEMU_INSN_CNT]);

}
#endif

static int32_t fcircadd_v4(int32_t RxV, int32_t offset, int32_t M, int32_t CS)
{
    int32_t length = M & 0x0001ffff;
    uint32_t new_ptr = RxV + offset;
    uint32_t start_addr = CS;
    uint32_t end_addr = start_addr + length;

    if (new_ptr >= end_addr) {
        new_ptr -= length;
    } else if (new_ptr < start_addr) {
        new_ptr += length;
    }

    return new_ptr;
}

int32_t HELPER(fcircadd)(int32_t RxV, int32_t offset, int32_t M, int32_t CS)
{
    int32_t K_const = (M >> 24) & 0xf;
    int32_t length = M & 0x1ffff;
    int32_t mask = (1 << (K_const + 2)) - 1;
    uint32_t new_ptr = RxV + offset;
    uint32_t start_addr = RxV & (~mask);
    uint32_t end_addr = start_addr | length;

    if (K_const == 0 && length >= 4) {
        return fcircadd_v4(RxV, offset, M, CS);
    }

    if (new_ptr >= end_addr) {
        new_ptr -= length;
    } else if (new_ptr < start_addr) {
        new_ptr += length;
    }

    return new_ptr;
}

/*
 * Hexagon FP operations return ~0 insteat of NaN
 * The hex_check_sfnan/hex_check_dfnan functions perform this check
 */
static float32 hex_check_sfnan(float32 x)
{
    if (float32_is_any_nan(x)) {
        return make_float32(0xFFFFFFFFU);
    }
    return x;
}

static float64 hex_check_dfnan(float64 x)
{
    if (float64_is_any_nan(x)) {
        return make_float64(0xFFFFFFFFFFFFFFFFULL);
    }
    return x;
}

/*
 * mem_noshuf
 * Section 5.5 of the Hexagon V67 Programmer's Reference Manual
 *
 * If the load is in slot 0 and there is a store in slot1 (that
 * wasn't cancelled), we have to do the store first.
 */
static void check_noshuf(CPUHexagonState *env, uint32_t slot)
{
    if (slot == 0 && env->pkt_has_store_s1 &&
        ((env->slot_cancelled & (1 << 1)) == 0)) {
        HELPER(commit_store)(env, 1);
    }
}

static inline uint8_t mem_load1(CPUHexagonState *env, uint32_t slot,
                                target_ulong vaddr)
{
    uint8_t retval;
    check_noshuf(env, slot);
    get_user_u8(retval, vaddr);
    return retval;
}

static inline uint16_t mem_load2(CPUHexagonState *env, uint32_t slot,
                                 target_ulong vaddr)
{
    uint16_t retval;
    check_noshuf(env, slot);
    get_user_u16(retval, vaddr);
    return retval;
}

static inline uint32_t mem_load4(CPUHexagonState *env, uint32_t slot,
                                 target_ulong vaddr)
{
    uint32_t retval;
    check_noshuf(env, slot);
    get_user_u32(retval, vaddr);
    return retval;
}

static inline uint64_t mem_load8(CPUHexagonState *env, uint32_t slot,
                                 target_ulong vaddr)
{
    uint64_t retval;
    check_noshuf(env, slot);
    get_user_u64(retval, vaddr);
    return retval;
}

/* Floating point */
float64 HELPER(conv_sf2df)(CPUHexagonState *env, float32 RsV)
{
    float64 out_f64;
    arch_fpop_start(env);
    out_f64 = float32_to_float64(RsV, &env->fp_status);
    out_f64 = hex_check_dfnan(out_f64);
    arch_fpop_end(env);
    return out_f64;
}

float32 HELPER(conv_df2sf)(CPUHexagonState *env, float64 RssV)
{
    float32 out_f32;
    arch_fpop_start(env);
    out_f32 = float64_to_float32(RssV, &env->fp_status);
    out_f32 = hex_check_sfnan(out_f32);
    arch_fpop_end(env);
    return out_f32;
}

float32 HELPER(conv_uw2sf)(CPUHexagonState *env, int32_t RsV)
{
    float32 RdV;
    arch_fpop_start(env);
    RdV = uint32_to_float32(RsV, &env->fp_status);
    RdV = hex_check_sfnan(RdV);
    arch_fpop_end(env);
    return RdV;
}

float64 HELPER(conv_uw2df)(CPUHexagonState *env, int32_t RsV)
{
    float64 RddV;
    arch_fpop_start(env);
    RddV = uint32_to_float64(RsV, &env->fp_status);
    RddV = hex_check_dfnan(RddV);
    arch_fpop_end(env);
    return RddV;
}

float32 HELPER(conv_w2sf)(CPUHexagonState *env, int32_t RsV)
{
    float32 RdV;
    arch_fpop_start(env);
    RdV = int32_to_float32(RsV, &env->fp_status);
    RdV = hex_check_sfnan(RdV);
    arch_fpop_end(env);
    return RdV;
}

float64 HELPER(conv_w2df)(CPUHexagonState *env, int32_t RsV)
{
    float64 RddV;
    arch_fpop_start(env);
    RddV = int32_to_float64(RsV, &env->fp_status);
    RddV = hex_check_dfnan(RddV);
    arch_fpop_end(env);
    return RddV;
}

float32 HELPER(conv_ud2sf)(CPUHexagonState *env, int64_t RssV)
{
    float32 RdV;
    arch_fpop_start(env);
    RdV = uint64_to_float32(RssV, &env->fp_status);
    RdV = hex_check_sfnan(RdV);
    arch_fpop_end(env);
    return RdV;
}

float64 HELPER(conv_ud2df)(CPUHexagonState *env, int64_t RssV)
{
    float64 RddV;
    arch_fpop_start(env);
    RddV = uint64_to_float64(RssV, &env->fp_status);
    RddV = hex_check_dfnan(RddV);
    arch_fpop_end(env);
    return RddV;
}

float32 HELPER(conv_d2sf)(CPUHexagonState *env, int64_t RssV)
{
    float32 RdV;
    arch_fpop_start(env);
    RdV = int64_to_float32(RssV, &env->fp_status);
    RdV = hex_check_sfnan(RdV);
    arch_fpop_end(env);
    return RdV;
}

float64 HELPER(conv_d2df)(CPUHexagonState *env, int64_t RssV)
{
    float64 RddV;
    arch_fpop_start(env);
    RddV = int64_to_float64(RssV, &env->fp_status);
    RddV = hex_check_dfnan(RddV);
    arch_fpop_end(env);
    return RddV;
}

int32_t HELPER(conv_sf2uw)(CPUHexagonState *env, float32 RsV)
{
    int32_t RdV;
    arch_fpop_start(env);
    RdV = conv_sf_to_4u(RsV, &env->fp_status);
    arch_fpop_end(env);
    return RdV;
}

int32_t HELPER(conv_sf2w)(CPUHexagonState *env, float32 RsV)
{
    int32_t RdV;
    arch_fpop_start(env);
    RdV = conv_sf_to_4s(RsV, &env->fp_status);
    arch_fpop_end(env);
    return RdV;
}

int64_t HELPER(conv_sf2ud)(CPUHexagonState *env, float32 RsV)
{
    int64_t RddV;
    arch_fpop_start(env);
    RddV = conv_sf_to_8u(RsV, &env->fp_status);
    arch_fpop_end(env);
    return RddV;
}

int64_t HELPER(conv_sf2d)(CPUHexagonState *env, float32 RsV)
{
    int64_t RddV;
    arch_fpop_start(env);
    RddV = conv_sf_to_8s(RsV, &env->fp_status);
    arch_fpop_end(env);
    return RddV;
}

int32_t HELPER(conv_df2uw)(CPUHexagonState *env, float64 RssV)
{
    int32_t RdV;
    arch_fpop_start(env);
    RdV = conv_df_to_4u(RssV, &env->fp_status);
    arch_fpop_end(env);
    return RdV;
}

int32_t HELPER(conv_df2w)(CPUHexagonState *env, float64 RssV)
{
    int32_t RdV;
    arch_fpop_start(env);
    RdV = conv_df_to_4s(RssV, &env->fp_status);
    arch_fpop_end(env);
    return RdV;
}

int64_t HELPER(conv_df2ud)(CPUHexagonState *env, float64 RssV)
{
    int64_t RddV;
    arch_fpop_start(env);
    RddV = conv_df_to_8u(RssV, &env->fp_status);
    arch_fpop_end(env);
    return RddV;
}

int64_t HELPER(conv_df2d)(CPUHexagonState *env, float64 RssV)
{
    int64_t RddV;
    arch_fpop_start(env);
    RddV = conv_df_to_8s(RssV, &env->fp_status);
    arch_fpop_end(env);
    return RddV;
}

int32_t HELPER(conv_sf2uw_chop)(CPUHexagonState *env, float32 RsV)
{
    int32_t RdV;
    arch_fpop_start(env);
    set_float_rounding_mode(float_round_to_zero, &env->fp_status);
    RdV = conv_sf_to_4u(RsV, &env->fp_status);
    arch_fpop_end(env);
    return RdV;
}

int32_t HELPER(conv_sf2w_chop)(CPUHexagonState *env, float32 RsV)
{
    int32_t RdV;
    arch_fpop_start(env);
    set_float_rounding_mode(float_round_to_zero, &env->fp_status);
    RdV = conv_sf_to_4s(RsV, &env->fp_status);
    arch_fpop_end(env);
    return RdV;
}

int64_t HELPER(conv_sf2ud_chop)(CPUHexagonState *env, float32 RsV)
{
    int64_t RddV;
    arch_fpop_start(env);
    set_float_rounding_mode(float_round_to_zero, &env->fp_status);
    RddV = conv_sf_to_8u(RsV, &env->fp_status);
    arch_fpop_end(env);
    return RddV;
}

int64_t HELPER(conv_sf2d_chop)(CPUHexagonState *env, float32 RsV)
{
    int64_t RddV;
    arch_fpop_start(env);
    set_float_rounding_mode(float_round_to_zero, &env->fp_status);
    RddV = conv_sf_to_8s(RsV, &env->fp_status);
    arch_fpop_end(env);
    return RddV;
}

int32_t HELPER(conv_df2uw_chop)(CPUHexagonState *env, float64 RssV)
{
    int32_t RdV;
    arch_fpop_start(env);
    set_float_rounding_mode(float_round_to_zero, &env->fp_status);
    RdV = conv_df_to_4u(RssV, &env->fp_status);
    arch_fpop_end(env);
    return RdV;
}

int32_t HELPER(conv_df2w_chop)(CPUHexagonState *env, float64 RssV)
{
    int32_t RdV;
    arch_fpop_start(env);
    set_float_rounding_mode(float_round_to_zero, &env->fp_status);
    RdV = conv_df_to_4s(RssV, &env->fp_status);
    arch_fpop_end(env);
    return RdV;
}

int64_t HELPER(conv_df2ud_chop)(CPUHexagonState *env, float64 RssV)
{
    int64_t RddV;
    arch_fpop_start(env);
    set_float_rounding_mode(float_round_to_zero, &env->fp_status);
    RddV = conv_df_to_8u(RssV, &env->fp_status);
    arch_fpop_end(env);
    return RddV;
}

int64_t HELPER(conv_df2d_chop)(CPUHexagonState *env, float64 RssV)
{
    int64_t RddV;
    arch_fpop_start(env);
    set_float_rounding_mode(float_round_to_zero, &env->fp_status);
    RddV = conv_df_to_8s(RssV, &env->fp_status);
    arch_fpop_end(env);
    return RddV;
}

float32 HELPER(sfadd)(CPUHexagonState *env, float32 RsV, float32 RtV)
{
    float32 RdV;
    arch_fpop_start(env);
    RdV = float32_add(RsV, RtV, &env->fp_status);
    RdV = hex_check_sfnan(RdV);
    arch_fpop_end(env);
    return RdV;
}

float32 HELPER(sfsub)(CPUHexagonState *env, float32 RsV, float32 RtV)
{
    float32 RdV;
    arch_fpop_start(env);
    RdV = float32_sub(RsV, RtV, &env->fp_status);
    RdV = hex_check_sfnan(RdV);
    arch_fpop_end(env);
    return RdV;
}

int32_t HELPER(sfcmpeq)(CPUHexagonState *env, float32 RsV, float32 RtV)
{
    int32_t PdV;
    arch_fpop_start(env);
    PdV = f8BITSOF(float32_eq_quiet(RsV, RtV, &env->fp_status));
    arch_fpop_end(env);
    return PdV;
}

int32_t HELPER(sfcmpgt)(CPUHexagonState *env, float32 RsV, float32 RtV)
{
    int cmp;
    int32_t PdV;
    arch_fpop_start(env);
    cmp = float32_compare_quiet(RsV, RtV, &env->fp_status);
    PdV = f8BITSOF(cmp == float_relation_greater);
    arch_fpop_end(env);
    return PdV;
}

int32_t HELPER(sfcmpge)(CPUHexagonState *env, float32 RsV, float32 RtV)
{
    int cmp;
    int32_t PdV;
    arch_fpop_start(env);
    cmp = float32_compare_quiet(RsV, RtV, &env->fp_status);
    PdV = f8BITSOF(cmp == float_relation_greater ||
                   cmp == float_relation_equal);
    arch_fpop_end(env);
    return PdV;
}

int32_t HELPER(sfcmpuo)(CPUHexagonState *env, float32 RsV, float32 RtV)
{
    int32_t PdV;
    arch_fpop_start(env);
    PdV = f8BITSOF(float32_is_any_nan(RsV) ||
                   float32_is_any_nan(RtV));
    arch_fpop_end(env);
    return PdV;
}

float32 HELPER(sfmax)(CPUHexagonState *env, float32 RsV, float32 RtV)
{
    float32 RdV;
    arch_fpop_start(env);
    RdV = float32_maxnum(RsV, RtV, &env->fp_status);
    RdV = hex_check_sfnan(RdV);
    arch_fpop_end(env);
    return RdV;
}

float32 HELPER(sfmin)(CPUHexagonState *env, float32 RsV, float32 RtV)
{
    float32 RdV;
    arch_fpop_start(env);
    RdV = float32_minnum(RsV, RtV, &env->fp_status);
    RdV = hex_check_sfnan(RdV);
    arch_fpop_end(env);
    return RdV;
}

int32_t HELPER(sfclass)(CPUHexagonState *env, float32 RsV, int32_t uiV)
{
    int32_t PdV = 0;
    arch_fpop_start(env);
    if (fGETBIT(0, uiV) && float32_is_zero(RsV)) {
        PdV = 0xff;
    }
    if (fGETBIT(1, uiV) && float32_is_normal(RsV)) {
        PdV = 0xff;
    }
    if (fGETBIT(2, uiV) && float32_is_denormal(RsV)) {
        PdV = 0xff;
    }
    if (fGETBIT(3, uiV) && float32_is_infinity(RsV)) {
        PdV = 0xff;
    }
    if (fGETBIT(4, uiV) && float32_is_any_nan(RsV)) {
        PdV = 0xff;
    }
    set_float_exception_flags(0, &env->fp_status);
    arch_fpop_end(env);
    return PdV;
}

float32 HELPER(sffixupn)(CPUHexagonState *env, float32 RsV, float32 RtV)
{
    float32 RdV = 0;
    int adjust;
    arch_fpop_start(env);
    arch_sf_recip_common(&RsV, &RtV, &RdV, &adjust, &env->fp_status);
    RdV = RsV;
    arch_fpop_end(env);
    return RdV;
}

float32 HELPER(sffixupd)(CPUHexagonState *env, float32 RsV, float32 RtV)
{
    float32 RdV = 0;
    int adjust;
    arch_fpop_start(env);
    arch_sf_recip_common(&RsV, &RtV, &RdV, &adjust, &env->fp_status);
    RdV = RtV;
    arch_fpop_end(env);
    return RdV;
}

float32 HELPER(sffixupr)(CPUHexagonState *env, float32 RsV)
{
    float32 RdV = 0;
    int adjust;
    arch_fpop_start(env);
    arch_sf_invsqrt_common(&RsV, &RdV, &adjust, &env->fp_status);
    RdV = RsV;
    arch_fpop_end(env);
    return RdV;
}

float64 HELPER(dfadd)(CPUHexagonState *env, float64 RssV, float64 RttV)
{
    float64 RddV;
    arch_fpop_start(env);
    RddV = float64_add(RssV, RttV, &env->fp_status);
    RddV = hex_check_dfnan(RddV);
    arch_fpop_end(env);
    return RddV;
}

float64 HELPER(dfsub)(CPUHexagonState *env, float64 RssV, float64 RttV)
{
    float64 RddV;
    arch_fpop_start(env);
    RddV = float64_sub(RssV, RttV, &env->fp_status);
    RddV = hex_check_dfnan(RddV);
    arch_fpop_end(env);
    return RddV;
}

float64 HELPER(dfmax)(CPUHexagonState *env, float64 RssV, float64 RttV)
{
    float64 RddV;
    arch_fpop_start(env);
    RddV = float64_maxnum(RssV, RttV, &env->fp_status);
    if (float64_is_any_nan(RssV) || float64_is_any_nan(RttV)) {
        float_raise(float_flag_invalid, &env->fp_status);
    }
    RddV = hex_check_dfnan(RddV);
    arch_fpop_end(env);
    return RddV;
}

float64 HELPER(dfmin)(CPUHexagonState *env, float64 RssV, float64 RttV)
{
    float64 RddV;
    arch_fpop_start(env);
    RddV = float64_minnum(RssV, RttV, &env->fp_status);
    if (float64_is_any_nan(RssV) || float64_is_any_nan(RttV)) {
        float_raise(float_flag_invalid, &env->fp_status);
    }
    RddV = hex_check_dfnan(RddV);
    arch_fpop_end(env);
    return RddV;
}

int32_t HELPER(dfcmpeq)(CPUHexagonState *env, float64 RssV, float64 RttV)
{
    int32_t PdV;
    arch_fpop_start(env);
    PdV = f8BITSOF(float64_eq_quiet(RssV, RttV, &env->fp_status));
    arch_fpop_end(env);
    return PdV;
}

int32_t HELPER(dfcmpgt)(CPUHexagonState *env, float64 RssV, float64 RttV)
{
    int cmp;
    int32_t PdV;
    arch_fpop_start(env);
    cmp = float64_compare_quiet(RssV, RttV, &env->fp_status);
    PdV = f8BITSOF(cmp == float_relation_greater);
    arch_fpop_end(env);
    return PdV;
}

int32_t HELPER(dfcmpge)(CPUHexagonState *env, float64 RssV, float64 RttV)
{
    int cmp;
    int32_t PdV;
    arch_fpop_start(env);
    cmp = float64_compare_quiet(RssV, RttV, &env->fp_status);
    PdV = f8BITSOF(cmp == float_relation_greater ||
                   cmp == float_relation_equal);
    arch_fpop_end(env);
    return PdV;
}

int32_t HELPER(dfcmpuo)(CPUHexagonState *env, float64 RssV, float64 RttV)
{
    int32_t PdV;
    arch_fpop_start(env);
    PdV = f8BITSOF(float64_is_any_nan(RssV) ||
                   float64_is_any_nan(RttV));
    arch_fpop_end(env);
    return PdV;
}

int32_t HELPER(dfclass)(CPUHexagonState *env, float64 RssV, int32_t uiV)
{
    int32_t PdV = 0;
    arch_fpop_start(env);
    if (fGETBIT(0, uiV) && float64_is_zero(RssV)) {
        PdV = 0xff;
    }
    if (fGETBIT(1, uiV) && float64_is_normal(RssV)) {
        PdV = 0xff;
    }
    if (fGETBIT(2, uiV) && float64_is_denormal(RssV)) {
        PdV = 0xff;
    }
    if (fGETBIT(3, uiV) && float64_is_infinity(RssV)) {
        PdV = 0xff;
    }
    if (fGETBIT(4, uiV) && float64_is_any_nan(RssV)) {
        PdV = 0xff;
    }
    set_float_exception_flags(0, &env->fp_status);
    arch_fpop_end(env);
    return PdV;
}

float32 HELPER(sfmpy)(CPUHexagonState *env, float32 RsV, float32 RtV)
{
    float32 RdV;
    arch_fpop_start(env);
    RdV = internal_mpyf(RsV, RtV, &env->fp_status);
    RdV = hex_check_sfnan(RdV);
    arch_fpop_end(env);
    return RdV;
}

float32 HELPER(sffma)(CPUHexagonState *env, float32 RxV,
                      float32 RsV, float32 RtV)
{
    arch_fpop_start(env);
    RxV = internal_fmafx(RsV, RtV, RxV, 0, &env->fp_status);
    RxV = hex_check_sfnan(RxV);
    arch_fpop_end(env);
    return RxV;
}

static bool is_zero_prod(float32 a, float32 b)
{
    return ((float32_is_zero(a) && is_finite(b)) ||
            (float32_is_zero(b) && is_finite(a)));
}

static float32 check_nan(float32 dst, float32 x, float_status *fp_status)
{
    float32 ret = dst;
    if (float32_is_any_nan(x)) {
        if (extract32(x, 22, 1) == 0) {
            float_raise(float_flag_invalid, fp_status);
        }
        ret = make_float32(0xffffffff);    /* nan */
    }
    return ret;
}

float32 HELPER(sffma_sc)(CPUHexagonState *env, float32 RxV,
                         float32 RsV, float32 RtV, float32 PuV)
{
    size4s_t tmp;
    arch_fpop_start(env);
    RxV = check_nan(RxV, RxV, &env->fp_status);
    RxV = check_nan(RxV, RsV, &env->fp_status);
    RxV = check_nan(RxV, RtV, &env->fp_status);
    tmp = internal_fmafx(RsV, RtV, RxV, fSXTN(8, 64, PuV), &env->fp_status);
    tmp = hex_check_sfnan(tmp);
    if (!(float32_is_zero(RxV) && is_zero_prod(RsV, RtV))) {
        RxV = tmp;
    }
    arch_fpop_end(env);
    return RxV;
}

float32 HELPER(sffms)(CPUHexagonState *env, float32 RxV,
                      float32 RsV, float32 RtV)
{
    float32 neg_RsV;
    arch_fpop_start(env);
    neg_RsV = float32_sub(float32_zero, RsV, &env->fp_status);
    RxV = internal_fmafx(neg_RsV, RtV, RxV, 0, &env->fp_status);
    RxV = hex_check_sfnan(RxV);
    arch_fpop_end(env);
    return RxV;
}

static inline bool is_inf_prod(int32_t a, int32_t b)
{
    return (float32_is_infinity(a) && float32_is_infinity(b)) ||
           (float32_is_infinity(a) && is_finite(b) && !float32_is_zero(b)) ||
           (float32_is_infinity(b) && is_finite(a) && !float32_is_zero(a));
}

float32 HELPER(sffma_lib)(CPUHexagonState *env, float32 RxV,
                          float32 RsV, float32 RtV)
{
    int infinp;
    int infminusinf;
    float32 tmp;

    arch_fpop_start(env);
    set_float_rounding_mode(float_round_nearest_even, &env->fp_status);
    infminusinf = float32_is_infinity(RxV) &&
                  is_inf_prod(RsV, RtV) &&
                  (fGETBIT(31, RsV ^ RxV ^ RtV) != 0);
    infinp = float32_is_infinity(RxV) ||
             float32_is_infinity(RtV) ||
             float32_is_infinity(RsV);
    RxV = check_nan(RxV, RxV, &env->fp_status);
    RxV = check_nan(RxV, RsV, &env->fp_status);
    RxV = check_nan(RxV, RtV, &env->fp_status);
    tmp = internal_fmafx(RsV, RtV, RxV, 0, &env->fp_status);
    tmp = hex_check_sfnan(tmp);
    if (!(float32_is_zero(RxV) && is_zero_prod(RsV, RtV))) {
        RxV = tmp;
    }
    set_float_exception_flags(0, &env->fp_status);
    if (float32_is_infinity(RxV) && !infinp) {
        RxV = RxV - 1;
    }
    if (infminusinf) {
        RxV = 0;
    }
    arch_fpop_end(env);
    return RxV;
}

float32 HELPER(sffms_lib)(CPUHexagonState *env, float32 RxV,
                          float32 RsV, float32 RtV)
{
    int infinp;
    int infminusinf;
    float32 tmp;

    arch_fpop_start(env);
    set_float_rounding_mode(float_round_nearest_even, &env->fp_status);
    infminusinf = float32_is_infinity(RxV) &&
                  is_inf_prod(RsV, RtV) &&
                  (fGETBIT(31, RsV ^ RxV ^ RtV) == 0);
    infinp = float32_is_infinity(RxV) ||
             float32_is_infinity(RtV) ||
             float32_is_infinity(RsV);
    RxV = check_nan(RxV, RxV, &env->fp_status);
    RxV = check_nan(RxV, RsV, &env->fp_status);
    RxV = check_nan(RxV, RtV, &env->fp_status);
    float32 minus_RsV = float32_sub(float32_zero, RsV, &env->fp_status);
    tmp = internal_fmafx(minus_RsV, RtV, RxV, 0, &env->fp_status);
    tmp = hex_check_sfnan(tmp);
    if (!(float32_is_zero(RxV) && is_zero_prod(RsV, RtV))) {
        RxV = tmp;
    }
    set_float_exception_flags(0, &env->fp_status);
    if (float32_is_infinity(RxV) && !infinp) {
        RxV = RxV - 1;
    }
    if (infminusinf) {
        RxV = 0;
    }
    arch_fpop_end(env);
    return RxV;
}

float64 HELPER(dfmpyfix)(CPUHexagonState *env, float64 RssV, float64 RttV)
{
    int64_t RddV;
    arch_fpop_start(env);
    if (float64_is_denormal(RssV) &&
        (float64_getexp(RttV) >= 512) &&
        float64_is_normal(RttV)) {
        RddV = float64_mul(RssV, make_float64(0x4330000000000000),
                           &env->fp_status);
        RddV = hex_check_dfnan(RddV);
    } else if (float64_is_denormal(RttV) &&
               (float64_getexp(RssV) >= 512) &&
               float64_is_normal(RssV)) {
        RddV = float64_mul(RssV, make_float64(0x3cb0000000000000),
                           &env->fp_status);
        RddV = hex_check_dfnan(RddV);
    } else {
        RddV = RssV;
    }
    arch_fpop_end(env);
    return RddV;
}

float64 HELPER(dfmpyhh)(CPUHexagonState *env, float64 RxxV,
                        float64 RssV, float64 RttV)
{
    arch_fpop_start(env);
    RxxV = internal_mpyhh(RssV, RttV, RxxV, &env->fp_status);
    RxxV = hex_check_dfnan(RxxV);
    arch_fpop_end(env);
    return RxxV;
}

static void cancel_slot(CPUHexagonState *env, uint32_t slot)
{
    HEX_DEBUG_LOG("Slot %d cancelled\n", slot);
    env->slot_cancelled |= (1 << slot);
}

/* These macros can be referenced in the generated helper functions */
#define warn(...) /* Nothing */
#define fatal(...) g_assert_not_reached();

#define BOGUS_HELPER(tag) \
    printf("ERROR: bogus helper: " #tag "\n")

#include "helper_funcs_generated.c.inc"