Alpha architecture emulation core.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2597 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 1255 insertions, 0 deletions

diff --git a/target-alpha/op_helper.c b/target-alpha/op_helper.c
new file mode 100644
index 0000000000..746665a429
--- /dev/null
+++ b/target-alpha/op_helper.c
@@ -0,0 +1,1255 @@
+/*
+ *  Alpha emulation cpu micro-operations helpers for qemu.
+ * 
+ *  Copyright (c) 2007 Jocelyn Mayer
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "exec.h"
+#include "softfloat.h"
+
+#include "op_helper.h"
+
+#define MEMSUFFIX _raw
+#include "op_helper_mem.h"
+
+#if !defined(CONFIG_USER_ONLY)
+#define MEMSUFFIX _user
+#include "op_helper_mem.h"
+
+#define MEMSUFFIX _kernel
+#include "op_helper_mem.h"
+
+/* Those are used for supervisor and executive modes */
+#define MEMSUFFIX _data
+#include "op_helper_mem.h"
+#endif
+
+void helper_tb_flush (void)
+{
+    tlb_flush(env, 1);
+}
+
+void cpu_dump_EA (target_ulong EA);
+void helper_print_mem_EA (target_ulong EA)
+{
+    cpu_dump_EA(EA);
+}
+
+/*****************************************************************************/
+/* Exceptions processing helpers */
+void helper_excp (uint32_t excp, uint32_t error)
+{
+    env->exception_index = excp;
+    env->error_code = error;
+    cpu_loop_exit();
+}
+
+void helper_amask (void)
+{
+    switch (env->implver) {
+    case IMPLVER_2106x:
+        /* EV4, EV45, LCA, LCA45 & EV5 */
+        break;
+    case IMPLVER_21164:
+    case IMPLVER_21264:
+    case IMPLVER_21364:
+        T0 &= ~env->amask;
+        break;
+    }
+}
+
+void helper_load_pcc (void)
+{
+    /* XXX: TODO */
+    T0 = 0;
+}
+
+void helper_load_implver (void)
+{
+    T0 = env->implver;
+}
+
+void helper_load_fpcr (void)
+{
+    T0 = 0;
+#ifdef CONFIG_SOFTFLOAT
+    T0 |= env->fp_status.float_exception_flags << 52;
+    if (env->fp_status.float_exception_flags)
+        T0 |= 1ULL << 63;
+    env->ipr[IPR_EXC_SUM] &= ~0x3E:
+    env->ipr[IPR_EXC_SUM] |= env->fp_status.float_exception_flags << 1;
+#endif
+    switch (env->fp_status.float_rounding_mode) {
+    case float_round_nearest_even:
+        T0 |= 2ULL << 58;
+        break;
+    case float_round_down:
+        T0 |= 1ULL << 58;
+        break;
+    case float_round_up:
+        T0 |= 3ULL << 58;
+        break;
+    case float_round_to_zero:
+        break;
+    }
+}
+
+void helper_store_fpcr (void)
+{
+#ifdef CONFIG_SOFTFLOAT
+    set_float_exception_flags((T0 >> 52) & 0x3F, &FP_STATUS);
+#endif
+    switch ((T0 >> 58) & 3) {
+    case 0:
+        set_float_rounding_mode(float_round_to_zero, &FP_STATUS);
+        break;
+    case 1:
+        set_float_rounding_mode(float_round_down, &FP_STATUS);
+        break;
+    case 2:
+        set_float_rounding_mode(float_round_nearest_even, &FP_STATUS);
+        break;
+    case 3:
+        set_float_rounding_mode(float_round_up, &FP_STATUS);
+        break;
+    }
+}
+
+void helper_load_irf (void)
+{
+    /* XXX: TODO */
+    T0 = 0;
+}
+
+void helper_set_irf (void)
+{
+    /* XXX: TODO */
+}
+
+void helper_clear_irf (void)
+{
+    /* XXX: TODO */
+}
+
+void helper_addqv (void)
+{
+    T2 = T0;
+    T0 += T1;
+    if (unlikely((T2 ^ T1 ^ (-1ULL)) & (T2 ^ T0) & (1ULL << 63))) {
+        helper_excp(EXCP_ARITH, EXCP_ARITH_OVERFLOW);
+    }
+}
+
+void helper_addlv (void)
+{
+    T2 = T0;
+    T0 = (uint32_t)(T0 + T1);
+    if (unlikely((T2 ^ T1 ^ (-1UL)) & (T2 ^ T0) & (1UL << 31))) {
+        helper_excp(EXCP_ARITH, EXCP_ARITH_OVERFLOW);
+    }
+}
+
+void helper_subqv (void)
+{
+    T2 = T0;
+    T0 -= T1;
+    if (unlikely(((~T2) ^ T0 ^ (-1ULL)) & ((~T2) ^ T1) & (1ULL << 63))) {
+        helper_excp(EXCP_ARITH, EXCP_ARITH_OVERFLOW);
+    }
+}
+
+void helper_sublv (void)
+{
+    T2 = T0;
+    T0 = (uint32_t)(T0 - T1);
+    if (unlikely(((~T2) ^ T0 ^ (-1UL)) & ((~T2) ^ T1) & (1UL << 31))) {
+        helper_excp(EXCP_ARITH, EXCP_ARITH_OVERFLOW);
+    }
+}
+
+void helper_mullv (void)
+{
+    int64_t res = (int64_t)T0 * (int64_t)T1;
+
+    if (unlikely((int32_t)res != res)) {
+        helper_excp(EXCP_ARITH, EXCP_ARITH_OVERFLOW);
+    }
+    T0 = (int64_t)((int32_t)res);
+}
+
+void helper_mulqv ()
+{
+    uint64_t res, tmp0, tmp1;
+
+    res = (T0 >> 32) * (T1 >> 32);
+    tmp0 = ((T0 & 0xFFFFFFFF) * (T1 >> 32)) +
+        ((T0 >> 32) * (T1 & 0xFFFFFFFF));
+    tmp1 = (T0 & 0xFFFFFFFF) * (T1 & 0xFFFFFFFF);
+    tmp0 += tmp1 >> 32;
+    res += tmp0 >> 32;
+    T0 *= T1;
+    if (unlikely(res != 0)) {
+        helper_excp(EXCP_ARITH, EXCP_ARITH_OVERFLOW);
+    }
+}
+
+void helper_umulh (void)
+{
+    uint64_t tmp0, tmp1;
+
+    tmp0 = ((T0 & 0xFFFFFFFF) * (T1 >> 32)) +
+        ((T0 >> 32) * (T1 & 0xFFFFFFFF));
+    tmp1 = (T0 & 0xFFFFFFFF) * (T1 & 0xFFFFFFFF);
+    tmp0 += tmp1 >> 32;
+    T0 = (T0 >> 32) * (T0 >> 32);
+    T0 += tmp0 >> 32;
+}
+
+void helper_ctpop (void)
+{
+    int n;
+
+    for (n = 0; T0 != 0; n++)
+        T0 = T0 ^ (T0 - 1);
+    T0 = n;
+}
+
+void helper_ctlz (void)
+{
+    uint32_t op32;
+    int n;
+
+    n = 0;
+    if (!(T0 & 0xFFFFFFFF00000000ULL)) {
+        n += 32;
+        T0 <<= 32;
+    }
+    /* Make it easier for 32 bits hosts */
+    op32 = T0 >> 32;
+    if (!(op32 & 0xFFFF0000UL)) {
+        n += 16;
+        op32 <<= 16;
+    }
+    if (!(op32 & 0xFF000000UL)) {
+        n += 8;
+        op32 <<= 8;
+    }
+    if (!(op32 & 0xF0000000UL)) {
+        n += 4;
+        op32 <<= 4;
+    }
+    if (!(op32 & 0xC0000000UL)) {
+        n += 2;
+        op32 <<= 2;
+    }
+    if (!(op32 & 0x80000000UL)) {
+        n++;
+        op32 <<= 1;
+    }
+    if (!(op32 & 0x80000000UL)) {
+        n++;
+    }
+    T0 = n;
+}
+
+void helper_cttz (void)
+{
+    uint32_t op32;
+    int n;
+
+    n = 0;
+    if (!(T0 & 0x00000000FFFFFFFFULL)) {
+        n += 32;
+        T0 >>= 32;
+    }
+    /* Make it easier for 32 bits hosts */
+    op32 = T0;
+    if (!(op32 & 0x0000FFFFUL)) {
+        n += 16;
+        op32 >>= 16;
+    }
+    if (!(op32 & 0x000000FFUL)) {
+        n += 8;
+        op32 >>= 8;
+    }
+    if (!(op32 & 0x0000000FUL)) {
+        n += 4;
+        op32 >>= 4;
+    }
+    if (!(op32 & 0x00000003UL)) {
+        n += 2;
+        op32 >>= 2;
+    }
+    if (!(op32 & 0x00000001UL)) {
+        n++;
+        op32 >>= 1;
+    }
+    if (!(op32 & 0x00000001UL)) {
+        n++;
+    }
+    T0 = n;
+}
+
+static inline uint64_t byte_zap (uint64_t op, uint8_t mskb)
+{
+    uint64_t mask;
+
+    mask = 0;
+    mask |= ((mskb >> 0) & 1) * 0x00000000000000FFULL;
+    mask |= ((mskb >> 1) & 1) * 0x000000000000FF00ULL;
+    mask |= ((mskb >> 2) & 1) * 0x0000000000FF0000ULL;
+    mask |= ((mskb >> 3) & 1) * 0x00000000FF000000ULL;
+    mask |= ((mskb >> 4) & 1) * 0x000000FF00000000ULL;
+    mask |= ((mskb >> 5) & 1) * 0x0000FF0000000000ULL;
+    mask |= ((mskb >> 6) & 1) * 0x00FF000000000000ULL;
+    mask |= ((mskb >> 7) & 1) * 0xFF00000000000000ULL;
+
+    return op & ~mask;
+}
+
+void helper_mskbl (void)
+{
+    T0 = byte_zap(T0, 0x01 << (T1 & 7));
+}
+
+void helper_extbl (void)
+{
+    T0 >>= (T1 & 7) * 8;
+    T0 = byte_zap(T0, 0xFE);
+}
+
+void helper_insbl (void)
+{
+    T0 <<= (T1 & 7) * 8;
+    T0 = byte_zap(T0, ~(0x01 << (T1 & 7)));
+}
+
+void helper_mskwl (void)
+{
+    T0 = byte_zap(T0, 0x03 << (T1 & 7));
+}
+
+void helper_extwl (void)
+{
+    T0 >>= (T1 & 7) * 8;
+    T0 = byte_zap(T0, 0xFC);
+}
+
+void helper_inswl (void)
+{
+    T0 <<= (T1 & 7) * 8;
+    T0 = byte_zap(T0, ~(0x03 << (T1 & 7)));
+}
+
+void helper_mskll (void)
+{
+    T0 = byte_zap(T0, 0x0F << (T1 & 7));
+}
+
+void helper_extll (void)
+{
+    T0 >>= (T1 & 7) * 8;
+    T0 = byte_zap(T0, 0xF0);
+}
+
+void helper_insll (void)
+{
+    T0 <<= (T1 & 7) * 8;
+    T0 = byte_zap(T0, ~(0x0F << (T1 & 7)));
+}
+
+void helper_zap (void)
+{
+    T0 = byte_zap(T0, T1);
+}
+
+void helper_zapnot (void)
+{
+    T0 = byte_zap(T0, ~T1);
+}
+
+void helper_mskql (void)
+{
+    T0 = byte_zap(T0, 0xFF << (T1 & 7));
+}
+
+void helper_extql (void)
+{
+    T0 >>= (T1 & 7) * 8;
+    T0 = byte_zap(T0, 0x00);
+}
+
+void helper_insql (void)
+{
+    T0 <<= (T1 & 7) * 8;
+    T0 = byte_zap(T0, ~(0xFF << (T1 & 7)));
+}
+
+void helper_mskwh (void)
+{
+    T0 = byte_zap(T0, (0x03 << (T1 & 7)) >> 8);
+}
+
+void helper_inswh (void)
+{
+    T0 >>= 64 - ((T1 & 7) * 8);
+    T0 = byte_zap(T0, ~((0x03 << (T1 & 7)) >> 8));
+}
+
+void helper_extwh (void)
+{
+    T0 <<= 64 - ((T1 & 7) * 8);
+    T0 = byte_zap(T0, ~0x07);
+}
+
+void helper_msklh (void)
+{
+    T0 = byte_zap(T0, (0x0F << (T1 & 7)) >> 8);
+}
+
+void helper_inslh (void)
+{
+    T0 >>= 64 - ((T1 & 7) * 8);
+    T0 = byte_zap(T0, ~((0x0F << (T1 & 7)) >> 8));
+}
+
+void helper_extlh (void)
+{
+    T0 <<= 64 - ((T1 & 7) * 8);
+    T0 = byte_zap(T0, ~0x0F);
+}
+
+void helper_mskqh (void)
+{
+    T0 = byte_zap(T0, (0xFF << (T1 & 7)) >> 8);
+}
+
+void helper_insqh (void)
+{
+    T0 >>= 64 - ((T1 & 7) * 8);
+    T0 = byte_zap(T0, ~((0xFF << (T1 & 7)) >> 8));
+}
+
+void helper_extqh (void)
+{
+    T0 <<= 64 - ((T1 & 7) * 8);
+    T0 = byte_zap(T0, 0x00);
+}
+
+void helper_cmpbge (void)
+{
+    uint8_t opa, opb, res;
+    int i;
+
+    res = 0;
+    for (i = 0; i < 7; i++) {
+        opa = T0 >> (i * 8);
+        opb = T1 >> (i * 8);
+        if (opa >= opb)
+            res |= 1 << i;
+    }
+    T0 = res;
+}
+
+void helper_cmov_fir (int freg)
+{
+    if (FT0 != 0)
+        env->fir[freg] = FT1;
+}
+
+void helper_sqrts (void)
+{
+    FT0 = float32_sqrt(FT0, &FP_STATUS);
+}
+
+void helper_cpys (void)
+{
+    union {
+        double d;
+        uint64_t i;
+    } p, q, r;
+
+    p.d = FT0;
+    q.d = FT1;
+    r.i = p.i & 0x8000000000000000ULL;
+    r.i |= q.i & ~0x8000000000000000ULL;
+    FT0 = r.d;
+}
+
+void helper_cpysn (void)
+{
+    union {
+        double d;
+        uint64_t i;
+    } p, q, r;
+
+    p.d = FT0;
+    q.d = FT1;
+    r.i = (~p.i) & 0x8000000000000000ULL;
+    r.i |= q.i & ~0x8000000000000000ULL;
+    FT0 = r.d;
+}
+
+void helper_cpyse (void)
+{
+    union {
+        double d;
+        uint64_t i;
+    } p, q, r;
+
+    p.d = FT0;
+    q.d = FT1;
+    r.i = p.i & 0xFFF0000000000000ULL;
+    r.i |= q.i & ~0xFFF0000000000000ULL;
+    FT0 = r.d;
+}
+
+void helper_itofs (void)
+{
+    union {
+        double d;
+        uint64_t i;
+    } p;
+
+    p.d = FT0;
+    FT0 = int64_to_float32(p.i, &FP_STATUS);
+}
+
+void helper_ftois (void)
+{
+    union {
+        double d;
+        uint64_t i;
+    } p;
+
+    p.i = float32_to_int64(FT0, &FP_STATUS);
+    FT0 = p.d;
+}
+
+void helper_sqrtt (void)
+{
+    FT0 = float64_sqrt(FT0, &FP_STATUS);
+}
+
+void helper_cmptun (void)
+{
+    union {
+        double d;
+        uint64_t i;
+    } p;
+
+    p.i = 0;
+    if (float64_is_nan(FT0) || float64_is_nan(FT1))
+        p.i = 0x4000000000000000ULL;
+    FT0 = p.d;
+}
+
+void helper_cmpteq (void)
+{
+    union {
+        double d;
+        uint64_t i;
+    } p;
+
+    p.i = 0;
+    if (float64_eq(FT0, FT1, &FP_STATUS))
+        p.i = 0x4000000000000000ULL;
+    FT0 = p.d;
+}
+
+void helper_cmptle (void)
+{
+    union {
+        double d;
+        uint64_t i;
+    } p;
+
+    p.i = 0;
+    if (float64_le(FT0, FT1, &FP_STATUS))
+        p.i = 0x4000000000000000ULL;
+    FT0 = p.d;
+}
+
+void helper_cmptlt (void)
+{
+    union {
+        double d;
+        uint64_t i;
+    } p;
+
+    p.i = 0;
+    if (float64_lt(FT0, FT1, &FP_STATUS))
+        p.i = 0x4000000000000000ULL;
+    FT0 = p.d;
+}
+
+void helper_itoft (void)
+{
+    union {
+        double d;
+        uint64_t i;
+    } p;
+
+    p.d = FT0;
+    FT0 = int64_to_float64(p.i, &FP_STATUS);
+}
+
+void helper_ftoit (void)
+{
+    union {
+        double d;
+        uint64_t i;
+    } p;
+
+    p.i = float64_to_int64(FT0, &FP_STATUS);
+    FT0 = p.d;
+}
+
+static int vaxf_is_valid (float ff)
+{
+    union {
+        float f;
+        uint32_t i;
+    } p;
+    uint32_t exp, mant;
+
+    p.f = ff;
+    exp = (p.i >> 23) & 0xFF;
+    mant = p.i & 0x007FFFFF;
+    if (exp == 0 && ((p.i & 0x80000000) || mant != 0)) {
+        /* Reserved operands / Dirty zero */
+        return 0;
+    }
+
+    return 1;
+}
+
+static float vaxf_to_ieee32 (float ff)
+{
+    union {
+        float f;
+        uint32_t i;
+    } p;
+    uint32_t exp;
+
+    p.f = ff;
+    exp = (p.i >> 23) & 0xFF;
+    if (exp < 3) {
+        /* Underflow */
+        p.f = 0.0;
+    } else {
+        p.f *= 0.25;
+    }
+
+    return p.f;
+}
+
+static float ieee32_to_vaxf (float fi)
+{
+    union {
+        float f;
+        uint32_t i;
+    } p;
+    uint32_t exp, mant;
+
+    p.f = fi;
+    exp = (p.i >> 23) & 0xFF;
+    mant = p.i & 0x007FFFFF;
+    if (exp == 255) {
+        /* NaN or infinity */
+        p.i = 1;
+    } else if (exp == 0) {
+        if (mant == 0) {
+            /* Zero */
+            p.i = 0;
+        } else {
+            /* Denormalized */
+            p.f *= 2.0;
+        }
+    } else {
+        if (exp >= 253) {
+            /* Overflow */
+            p.i = 1;
+        } else {
+            p.f *= 4.0;
+        }
+    }
+
+    return p.f;
+}
+
+void helper_addf (void)
+{
+    float ft0, ft1, ft2;
+
+    if (!vaxf_is_valid(FT0) || !vaxf_is_valid(FT1)) {
+        /* XXX: TODO */
+    }
+    ft0 = vaxf_to_ieee32(FT0);
+    ft1 = vaxf_to_ieee32(FT1);
+    ft2 = float32_add(ft0, ft1, &FP_STATUS);
+    FT0 = ieee32_to_vaxf(ft2);
+}
+
+void helper_subf (void)
+{
+    float ft0, ft1, ft2;
+
+    if (!vaxf_is_valid(FT0) || !vaxf_is_valid(FT1)) {
+        /* XXX: TODO */
+    }
+    ft0 = vaxf_to_ieee32(FT0);
+    ft1 = vaxf_to_ieee32(FT1);
+    ft2 = float32_sub(ft0, ft1, &FP_STATUS);
+    FT0 = ieee32_to_vaxf(ft2);
+}
+
+void helper_mulf (void)
+{
+    float ft0, ft1, ft2;
+
+    if (!vaxf_is_valid(FT0) || !vaxf_is_valid(FT1)) {
+        /* XXX: TODO */
+    }
+    ft0 = vaxf_to_ieee32(FT0);
+    ft1 = vaxf_to_ieee32(FT1);
+    ft2 = float32_mul(ft0, ft1, &FP_STATUS);
+    FT0 = ieee32_to_vaxf(ft2);
+}
+
+void helper_divf (void)
+{
+    float ft0, ft1, ft2;
+
+    if (!vaxf_is_valid(FT0) || !vaxf_is_valid(FT1)) {
+        /* XXX: TODO */
+    }
+    ft0 = vaxf_to_ieee32(FT0);
+    ft1 = vaxf_to_ieee32(FT1);
+    ft2 = float32_div(ft0, ft1, &FP_STATUS);
+    FT0 = ieee32_to_vaxf(ft2);
+}
+
+void helper_sqrtf (void)
+{
+    float ft0, ft1;
+
+    if (!vaxf_is_valid(FT0) || !vaxf_is_valid(FT1)) {
+        /* XXX: TODO */
+    }
+    ft0 = vaxf_to_ieee32(FT0);
+    ft1 = float32_sqrt(ft0, &FP_STATUS);
+    FT0 = ieee32_to_vaxf(ft1);
+}
+
+void helper_itoff (void)
+{
+    /* XXX: TODO */
+}
+
+static int vaxg_is_valid (double ff)
+{
+    union {
+        double f;
+        uint64_t i;
+    } p;
+    uint64_t exp, mant;
+
+    p.f = ff;
+    exp = (p.i >> 52) & 0x7FF;
+    mant = p.i & 0x000FFFFFFFFFFFFFULL;
+    if (exp == 0 && ((p.i & 0x8000000000000000ULL) || mant != 0)) {
+        /* Reserved operands / Dirty zero */
+        return 0;
+    }
+
+    return 1;
+}
+
+static double vaxg_to_ieee64 (double fg)
+{
+    union {
+        double f;
+        uint64_t i;
+    } p;
+    uint32_t exp;
+
+    p.f = fg;
+    exp = (p.i >> 52) & 0x7FF;
+    if (exp < 3) {
+        /* Underflow */
+        p.f = 0.0;
+    } else {
+        p.f *= 0.25;
+    }
+
+    return p.f;
+}
+
+static double ieee64_to_vaxg (double fi)
+{
+    union {
+        double f;
+        uint64_t i;
+    } p;
+    uint64_t mant;
+    uint32_t exp;
+
+    p.f = fi;
+    exp = (p.i >> 52) & 0x7FF;
+    mant = p.i & 0x000FFFFFFFFFFFFFULL;
+    if (exp == 255) {
+        /* NaN or infinity */
+        p.i = 1; /* VAX dirty zero */
+    } else if (exp == 0) {
+        if (mant == 0) {
+            /* Zero */
+            p.i = 0;
+        } else {
+            /* Denormalized */
+            p.f *= 2.0;
+        }
+    } else {
+        if (exp >= 2045) {
+            /* Overflow */
+            p.i = 1; /* VAX dirty zero */
+        } else {
+            p.f *= 4.0;
+        }
+    }
+
+    return p.f;
+}
+
+void helper_addg (void)
+{
+    double ft0, ft1, ft2;
+
+    if (!vaxg_is_valid(FT0) || !vaxg_is_valid(FT1)) {
+        /* XXX: TODO */
+    }
+    ft0 = vaxg_to_ieee64(FT0);
+    ft1 = vaxg_to_ieee64(FT1);
+    ft2 = float64_add(ft0, ft1, &FP_STATUS);
+    FT0 = ieee64_to_vaxg(ft2);
+}
+
+void helper_subg (void)
+{
+    double ft0, ft1, ft2;
+
+    if (!vaxg_is_valid(FT0) || !vaxg_is_valid(FT1)) {
+        /* XXX: TODO */
+    }
+    ft0 = vaxg_to_ieee64(FT0);
+    ft1 = vaxg_to_ieee64(FT1);
+    ft2 = float64_sub(ft0, ft1, &FP_STATUS);
+    FT0 = ieee64_to_vaxg(ft2);
+}
+
+void helper_mulg (void)
+{
+    double ft0, ft1, ft2;
+
+    if (!vaxg_is_valid(FT0) || !vaxg_is_valid(FT1)) {
+        /* XXX: TODO */
+    }
+    ft0 = vaxg_to_ieee64(FT0);
+    ft1 = vaxg_to_ieee64(FT1);
+    ft2 = float64_mul(ft0, ft1, &FP_STATUS);
+    FT0 = ieee64_to_vaxg(ft2);
+}
+
+void helper_divg (void)
+{
+    double ft0, ft1, ft2;
+
+    if (!vaxg_is_valid(FT0) || !vaxg_is_valid(FT1)) {
+        /* XXX: TODO */
+    }
+    ft0 = vaxg_to_ieee64(FT0);
+    ft1 = vaxg_to_ieee64(FT1);
+    ft2 = float64_div(ft0, ft1, &FP_STATUS);
+    FT0 = ieee64_to_vaxg(ft2);
+}
+
+void helper_sqrtg (void)
+{
+    double ft0, ft1;
+
+    if (!vaxg_is_valid(FT0) || !vaxg_is_valid(FT1)) {
+        /* XXX: TODO */
+    }
+    ft0 = vaxg_to_ieee64(FT0);
+    ft1 = float64_sqrt(ft0, &FP_STATUS);
+    FT0 = ieee64_to_vaxg(ft1);
+}
+
+void helper_cmpgeq (void)
+{
+    union {
+        double d;
+        uint64_t u;
+    } p;
+    double ft0, ft1;
+
+    if (!vaxg_is_valid(FT0) || !vaxg_is_valid(FT1)) {
+        /* XXX: TODO */
+    }
+    ft0 = vaxg_to_ieee64(FT0);
+    ft1 = vaxg_to_ieee64(FT1);
+    p.u = 0;
+    if (float64_eq(ft0, ft1, &FP_STATUS))
+        p.u = 0x4000000000000000ULL;
+    FT0 = p.d;
+}
+
+void helper_cmpglt (void)
+{
+    union {
+        double d;
+        uint64_t u;
+    } p;
+    double ft0, ft1;
+
+    if (!vaxg_is_valid(FT0) || !vaxg_is_valid(FT1)) {
+        /* XXX: TODO */
+    }
+    ft0 = vaxg_to_ieee64(FT0);
+    ft1 = vaxg_to_ieee64(FT1);
+    p.u = 0;
+    if (float64_lt(ft0, ft1, &FP_STATUS))
+        p.u = 0x4000000000000000ULL;
+    FT0 = p.d;
+}
+
+void helper_cmpgle (void)
+{
+    union {
+        double d;
+        uint64_t u;
+    } p;
+    double ft0, ft1;
+
+    if (!vaxg_is_valid(FT0) || !vaxg_is_valid(FT1)) {
+        /* XXX: TODO */
+    }
+    ft0 = vaxg_to_ieee64(FT0);
+    ft1 = vaxg_to_ieee64(FT1);
+    p.u = 0;
+    if (float64_le(ft0, ft1, &FP_STATUS))
+        p.u = 0x4000000000000000ULL;
+    FT0 = p.d;
+}
+
+void helper_cvtqs (void)
+{
+    union {
+        double d;
+        uint64_t u;
+    } p;
+
+    p.d = FT0;
+    FT0 = (float)p.u;
+}
+
+void helper_cvttq (void)
+{
+    union {
+        double d;
+        uint64_t u;
+    } p;
+
+    p.u = FT0;
+    FT0 = p.d;
+}
+
+void helper_cvtqt (void)
+{
+    union {
+        double d;
+        uint64_t u;
+    } p;
+
+    p.d = FT0;
+    FT0 = p.u;
+}
+
+void helper_cvtqf (void)
+{
+    union {
+        double d;
+        uint64_t u;
+    } p;
+
+    p.d = FT0;
+    FT0 = ieee32_to_vaxf(p.u);
+}
+
+void helper_cvtgf (void)
+{
+    double ft0;
+
+    ft0 = vaxg_to_ieee64(FT0);
+    FT0 = ieee32_to_vaxf(ft0);
+}
+
+void helper_cvtgd (void)
+{
+    /* XXX: TODO */
+}
+
+void helper_cvtgq (void)
+{
+    union {
+        double d;
+        uint64_t u;
+    } p;
+
+    p.u = vaxg_to_ieee64(FT0);
+    FT0 = p.d;
+}
+
+void helper_cvtqg (void)
+{
+    union {
+        double d;
+        uint64_t u;
+    } p;
+
+    p.d = FT0;
+    FT0 = ieee64_to_vaxg(p.u);
+}
+
+void helper_cvtdg (void)
+{
+    /* XXX: TODO */
+}
+
+void helper_cvtlq (void)
+{
+    union {
+        double d;
+        uint64_t u;
+    } p, q;
+
+    p.d = FT0;
+    q.u = (p.u >> 29) & 0x3FFFFFFF;
+    q.u |= (p.u >> 32);
+    q.u = (int64_t)((int32_t)q.u);
+    FT0 = q.d;
+}
+
+static inline void __helper_cvtql (int s, int v)
+{
+    union {
+        double d;
+        uint64_t u;
+    } p, q;
+
+    p.d = FT0;
+    q.u = ((uint64_t)(p.u & 0xC0000000)) << 32;
+    q.u |= ((uint64_t)(p.u & 0x7FFFFFFF)) << 29;
+    FT0 = q.d;
+    if (v && (int64_t)((int32_t)p.u) != (int64_t)p.u) {
+        helper_excp(EXCP_ARITH, EXCP_ARITH_OVERFLOW);
+    }
+    if (s) {
+        /* TODO */
+    }
+}
+
+void helper_cvtql (void)
+{
+    __helper_cvtql(0, 0);
+}
+
+void helper_cvtqlv (void)
+{
+    __helper_cvtql(0, 1);
+}
+
+void helper_cvtqlsv (void)
+{
+    __helper_cvtql(1, 1);
+}
+
+void helper_cmpfeq (void)
+{
+    if (float64_eq(FT0, FT1, &FP_STATUS))
+        T0 = 1;
+    else
+        T0 = 0;
+}
+
+void helper_cmpfne (void)
+{
+    if (float64_eq(FT0, FT1, &FP_STATUS))
+        T0 = 0;
+    else
+        T0 = 1;
+}
+
+void helper_cmpflt (void)
+{
+    if (float64_lt(FT0, FT1, &FP_STATUS))
+        T0 = 1;
+    else
+        T0 = 0;
+}
+
+void helper_cmpfle (void)
+{
+    if (float64_lt(FT0, FT1, &FP_STATUS))
+        T0 = 1;
+    else
+        T0 = 0;
+}
+
+void helper_cmpfgt (void)
+{
+    if (float64_le(FT0, FT1, &FP_STATUS))
+        T0 = 0;
+    else
+        T0 = 1;
+}
+
+void helper_cmpfge (void)
+{
+    if (float64_lt(FT0, FT1, &FP_STATUS))
+        T0 = 0;
+    else
+        T0 = 1;
+}
+
+#if !defined (CONFIG_USER_ONLY)
+void helper_mfpr (int iprn)
+{
+    uint64_t val;
+
+    if (cpu_alpha_mfpr(env, iprn, &val) == 0)
+        T0 = val;
+}
+
+void helper_mtpr (int iprn)
+{
+    cpu_alpha_mtpr(env, iprn, T0, NULL);
+}
+#endif
+
+/*****************************************************************************/
+/* Softmmu support */
+#if !defined (CONFIG_USER_ONLY)
+
+#define GETPC() (__builtin_return_address(0))
+
+/* XXX: the two following helpers are pure hacks.
+ *      Hopefully, we emulate the PALcode, then we should never see
+ *      HW_LD / HW_ST instructions.
+ */
+void helper_ld_phys_to_virt (void)
+{
+    uint64_t tlb_addr, physaddr;
+    int index, is_user;
+    void *retaddr;
+
+    is_user = (env->ps >> 3) & 3;
+    index = (T0 >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
+ redo:
+    tlb_addr = env->tlb_table[is_user][index].addr_read;
+    if ((T0 & TARGET_PAGE_MASK) ==
+        (tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) {
+        physaddr = T0 + env->tlb_table[is_user][index].addend;
+    } else {
+        /* the page is not in the TLB : fill it */
+        retaddr = GETPC();
+        tlb_fill(T0, 0, is_user, retaddr);
+        goto redo;
+    }
+    T0 = physaddr;
+}
+
+void helper_st_phys_to_virt (void)
+{
+    uint64_t tlb_addr, physaddr;
+    int index, is_user;
+    void *retaddr;
+
+    is_user = (env->ps >> 3) & 3;
+    index = (T0 >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
+ redo:
+    tlb_addr = env->tlb_table[is_user][index].addr_write;
+    if ((T0 & TARGET_PAGE_MASK) ==
+        (tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) {
+        physaddr = T0 + env->tlb_table[is_user][index].addend;
+    } else {
+        /* the page is not in the TLB : fill it */
+        retaddr = GETPC();
+        tlb_fill(T0, 1, is_user, retaddr);
+        goto redo;
+    }
+    T0 = physaddr;
+}
+
+#define MMUSUFFIX _mmu
+
+#define SHIFT 0
+#include "softmmu_template.h"
+
+#define SHIFT 1
+#include "softmmu_template.h"
+
+#define SHIFT 2
+#include "softmmu_template.h"
+
+#define SHIFT 3
+#include "softmmu_template.h"
+
+/* try to fill the TLB and return an exception if error. If retaddr is
+   NULL, it means that the function was called in C code (i.e. not
+   from generated code or from helper.c) */
+/* XXX: fix it to restore all registers */
+void tlb_fill (target_ulong addr, int is_write, int is_user, void *retaddr)
+{
+    TranslationBlock *tb;
+    CPUState *saved_env;
+    target_phys_addr_t pc;
+    int ret;
+
+    /* XXX: hack to restore env in all cases, even if not called from
+       generated code */
+    saved_env = env;
+    env = cpu_single_env;
+    ret = cpu_alpha_handle_mmu_fault(env, addr, is_write, is_user, 1);
+    if (!likely(ret == 0)) {
+        if (likely(retaddr)) {
+            /* now we have a real cpu fault */
+            pc = (target_phys_addr_t)retaddr;
+            tb = tb_find_pc(pc);
+            if (likely(tb)) {
+                /* the PC is inside the translated code. It means that we have
+                   a virtual CPU fault */
+                cpu_restore_state(tb, env, pc, NULL);
+            }
+        }
+        /* Exception index and error code are already set */
+        cpu_loop_exit();
+    }
+    env = saved_env;
+}
+
+#endif