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-rw-r--r--target-alpha/vax_helper.c355
1 files changed, 0 insertions, 355 deletions
diff --git a/target-alpha/vax_helper.c b/target-alpha/vax_helper.c
deleted file mode 100644
index 2b0c178274..0000000000
--- a/target-alpha/vax_helper.c
+++ /dev/null
@@ -1,355 +0,0 @@
-/*
- * Helpers for vax floating point instructions.
- *
- * 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, see <http://www.gnu.org/licenses/>.
- */
-
-#include "qemu/osdep.h"
-#include "cpu.h"
-#include "exec/exec-all.h"
-#include "exec/helper-proto.h"
-#include "fpu/softfloat.h"
-
-#define FP_STATUS (env->fp_status)
-
-
-/* F floating (VAX) */
-static uint64_t float32_to_f(float32 fa)
-{
- uint64_t r, exp, mant, sig;
- CPU_FloatU a;
-
- a.f = fa;
- sig = ((uint64_t)a.l & 0x80000000) << 32;
- exp = (a.l >> 23) & 0xff;
- mant = ((uint64_t)a.l & 0x007fffff) << 29;
-
- if (exp == 255) {
- /* NaN or infinity */
- r = 1; /* VAX dirty zero */
- } else if (exp == 0) {
- if (mant == 0) {
- /* Zero */
- r = 0;
- } else {
- /* Denormalized */
- r = sig | ((exp + 1) << 52) | mant;
- }
- } else {
- if (exp >= 253) {
- /* Overflow */
- r = 1; /* VAX dirty zero */
- } else {
- r = sig | ((exp + 2) << 52);
- }
- }
-
- return r;
-}
-
-static float32 f_to_float32(CPUAlphaState *env, uintptr_t retaddr, uint64_t a)
-{
- uint32_t exp, mant_sig;
- CPU_FloatU r;
-
- exp = ((a >> 55) & 0x80) | ((a >> 52) & 0x7f);
- mant_sig = ((a >> 32) & 0x80000000) | ((a >> 29) & 0x007fffff);
-
- if (unlikely(!exp && mant_sig)) {
- /* Reserved operands / Dirty zero */
- dynamic_excp(env, retaddr, EXCP_OPCDEC, 0);
- }
-
- if (exp < 3) {
- /* Underflow */
- r.l = 0;
- } else {
- r.l = ((exp - 2) << 23) | mant_sig;
- }
-
- return r.f;
-}
-
-uint32_t helper_f_to_memory(uint64_t a)
-{
- uint32_t r;
- r = (a & 0x00001fffe0000000ull) >> 13;
- r |= (a & 0x07ffe00000000000ull) >> 45;
- r |= (a & 0xc000000000000000ull) >> 48;
- return r;
-}
-
-uint64_t helper_memory_to_f(uint32_t a)
-{
- uint64_t r;
- r = ((uint64_t)(a & 0x0000c000)) << 48;
- r |= ((uint64_t)(a & 0x003fffff)) << 45;
- r |= ((uint64_t)(a & 0xffff0000)) << 13;
- if (!(a & 0x00004000)) {
- r |= 0x7ll << 59;
- }
- return r;
-}
-
-/* ??? Emulating VAX arithmetic with IEEE arithmetic is wrong. We should
- either implement VAX arithmetic properly or just signal invalid opcode. */
-
-uint64_t helper_addf(CPUAlphaState *env, uint64_t a, uint64_t b)
-{
- float32 fa, fb, fr;
-
- fa = f_to_float32(env, GETPC(), a);
- fb = f_to_float32(env, GETPC(), b);
- fr = float32_add(fa, fb, &FP_STATUS);
- return float32_to_f(fr);
-}
-
-uint64_t helper_subf(CPUAlphaState *env, uint64_t a, uint64_t b)
-{
- float32 fa, fb, fr;
-
- fa = f_to_float32(env, GETPC(), a);
- fb = f_to_float32(env, GETPC(), b);
- fr = float32_sub(fa, fb, &FP_STATUS);
- return float32_to_f(fr);
-}
-
-uint64_t helper_mulf(CPUAlphaState *env, uint64_t a, uint64_t b)
-{
- float32 fa, fb, fr;
-
- fa = f_to_float32(env, GETPC(), a);
- fb = f_to_float32(env, GETPC(), b);
- fr = float32_mul(fa, fb, &FP_STATUS);
- return float32_to_f(fr);
-}
-
-uint64_t helper_divf(CPUAlphaState *env, uint64_t a, uint64_t b)
-{
- float32 fa, fb, fr;
-
- fa = f_to_float32(env, GETPC(), a);
- fb = f_to_float32(env, GETPC(), b);
- fr = float32_div(fa, fb, &FP_STATUS);
- return float32_to_f(fr);
-}
-
-uint64_t helper_sqrtf(CPUAlphaState *env, uint64_t t)
-{
- float32 ft, fr;
-
- ft = f_to_float32(env, GETPC(), t);
- fr = float32_sqrt(ft, &FP_STATUS);
- return float32_to_f(fr);
-}
-
-
-/* G floating (VAX) */
-static uint64_t float64_to_g(float64 fa)
-{
- uint64_t r, exp, mant, sig;
- CPU_DoubleU a;
-
- a.d = fa;
- sig = a.ll & 0x8000000000000000ull;
- exp = (a.ll >> 52) & 0x7ff;
- mant = a.ll & 0x000fffffffffffffull;
-
- if (exp == 2047) {
- /* NaN or infinity */
- r = 1; /* VAX dirty zero */
- } else if (exp == 0) {
- if (mant == 0) {
- /* Zero */
- r = 0;
- } else {
- /* Denormalized */
- r = sig | ((exp + 1) << 52) | mant;
- }
- } else {
- if (exp >= 2045) {
- /* Overflow */
- r = 1; /* VAX dirty zero */
- } else {
- r = sig | ((exp + 2) << 52);
- }
- }
-
- return r;
-}
-
-static float64 g_to_float64(CPUAlphaState *env, uintptr_t retaddr, uint64_t a)
-{
- uint64_t exp, mant_sig;
- CPU_DoubleU r;
-
- exp = (a >> 52) & 0x7ff;
- mant_sig = a & 0x800fffffffffffffull;
-
- if (!exp && mant_sig) {
- /* Reserved operands / Dirty zero */
- dynamic_excp(env, retaddr, EXCP_OPCDEC, 0);
- }
-
- if (exp < 3) {
- /* Underflow */
- r.ll = 0;
- } else {
- r.ll = ((exp - 2) << 52) | mant_sig;
- }
-
- return r.d;
-}
-
-uint64_t helper_g_to_memory(uint64_t a)
-{
- uint64_t r;
- r = (a & 0x000000000000ffffull) << 48;
- r |= (a & 0x00000000ffff0000ull) << 16;
- r |= (a & 0x0000ffff00000000ull) >> 16;
- r |= (a & 0xffff000000000000ull) >> 48;
- return r;
-}
-
-uint64_t helper_memory_to_g(uint64_t a)
-{
- uint64_t r;
- r = (a & 0x000000000000ffffull) << 48;
- r |= (a & 0x00000000ffff0000ull) << 16;
- r |= (a & 0x0000ffff00000000ull) >> 16;
- r |= (a & 0xffff000000000000ull) >> 48;
- return r;
-}
-
-uint64_t helper_addg(CPUAlphaState *env, uint64_t a, uint64_t b)
-{
- float64 fa, fb, fr;
-
- fa = g_to_float64(env, GETPC(), a);
- fb = g_to_float64(env, GETPC(), b);
- fr = float64_add(fa, fb, &FP_STATUS);
- return float64_to_g(fr);
-}
-
-uint64_t helper_subg(CPUAlphaState *env, uint64_t a, uint64_t b)
-{
- float64 fa, fb, fr;
-
- fa = g_to_float64(env, GETPC(), a);
- fb = g_to_float64(env, GETPC(), b);
- fr = float64_sub(fa, fb, &FP_STATUS);
- return float64_to_g(fr);
-}
-
-uint64_t helper_mulg(CPUAlphaState *env, uint64_t a, uint64_t b)
-{
- float64 fa, fb, fr;
-
- fa = g_to_float64(env, GETPC(), a);
- fb = g_to_float64(env, GETPC(), b);
- fr = float64_mul(fa, fb, &FP_STATUS);
- return float64_to_g(fr);
-}
-
-uint64_t helper_divg(CPUAlphaState *env, uint64_t a, uint64_t b)
-{
- float64 fa, fb, fr;
-
- fa = g_to_float64(env, GETPC(), a);
- fb = g_to_float64(env, GETPC(), b);
- fr = float64_div(fa, fb, &FP_STATUS);
- return float64_to_g(fr);
-}
-
-uint64_t helper_sqrtg(CPUAlphaState *env, uint64_t a)
-{
- float64 fa, fr;
-
- fa = g_to_float64(env, GETPC(), a);
- fr = float64_sqrt(fa, &FP_STATUS);
- return float64_to_g(fr);
-}
-
-uint64_t helper_cmpgeq(CPUAlphaState *env, uint64_t a, uint64_t b)
-{
- float64 fa, fb;
-
- fa = g_to_float64(env, GETPC(), a);
- fb = g_to_float64(env, GETPC(), b);
-
- if (float64_eq_quiet(fa, fb, &FP_STATUS)) {
- return 0x4000000000000000ULL;
- } else {
- return 0;
- }
-}
-
-uint64_t helper_cmpgle(CPUAlphaState *env, uint64_t a, uint64_t b)
-{
- float64 fa, fb;
-
- fa = g_to_float64(env, GETPC(), a);
- fb = g_to_float64(env, GETPC(), b);
-
- if (float64_le(fa, fb, &FP_STATUS)) {
- return 0x4000000000000000ULL;
- } else {
- return 0;
- }
-}
-
-uint64_t helper_cmpglt(CPUAlphaState *env, uint64_t a, uint64_t b)
-{
- float64 fa, fb;
-
- fa = g_to_float64(env, GETPC(), a);
- fb = g_to_float64(env, GETPC(), b);
-
- if (float64_lt(fa, fb, &FP_STATUS)) {
- return 0x4000000000000000ULL;
- } else {
- return 0;
- }
-}
-
-uint64_t helper_cvtqf(CPUAlphaState *env, uint64_t a)
-{
- float32 fr = int64_to_float32(a, &FP_STATUS);
- return float32_to_f(fr);
-}
-
-uint64_t helper_cvtgf(CPUAlphaState *env, uint64_t a)
-{
- float64 fa;
- float32 fr;
-
- fa = g_to_float64(env, GETPC(), a);
- fr = float64_to_float32(fa, &FP_STATUS);
- return float32_to_f(fr);
-}
-
-uint64_t helper_cvtgq(CPUAlphaState *env, uint64_t a)
-{
- float64 fa = g_to_float64(env, GETPC(), a);
- return float64_to_int64_round_to_zero(fa, &FP_STATUS);
-}
-
-uint64_t helper_cvtqg(CPUAlphaState *env, uint64_t a)
-{
- float64 fr;
- fr = int64_to_float64(a, &FP_STATUS);
- return float64_to_g(fr);
-}
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