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-rw-r--r--qemu/target-s390x/fpu_helper.c744
1 files changed, 0 insertions, 744 deletions
diff --git a/qemu/target-s390x/fpu_helper.c b/qemu/target-s390x/fpu_helper.c
deleted file mode 100644
index 1c7f67354..000000000
--- a/qemu/target-s390x/fpu_helper.c
+++ /dev/null
@@ -1,744 +0,0 @@
-/*
- * S/390 FPU helper routines
- *
- * Copyright (c) 2009 Ulrich Hecht
- * Copyright (c) 2009 Alexander Graf
- *
- * 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/cpu_ldst.h"
-#include "exec/helper-proto.h"
-
-/* #define DEBUG_HELPER */
-#ifdef DEBUG_HELPER
-#define HELPER_LOG(x...) qemu_log(x)
-#else
-#define HELPER_LOG(x...)
-#endif
-
-#define RET128(F) (env->retxl = F.low, F.high)
-
-#define convert_bit(mask, from, to) \
- (to < from \
- ? (mask / (from / to)) & to \
- : (mask & from) * (to / from))
-
-static void ieee_exception(CPUS390XState *env, uint32_t dxc, uintptr_t retaddr)
-{
- /* Install the DXC code. */
- env->fpc = (env->fpc & ~0xff00) | (dxc << 8);
- /* Trap. */
- runtime_exception(env, PGM_DATA, retaddr);
-}
-
-/* Should be called after any operation that may raise IEEE exceptions. */
-static void handle_exceptions(CPUS390XState *env, uintptr_t retaddr)
-{
- unsigned s390_exc, qemu_exc;
-
- /* Get the exceptions raised by the current operation. Reset the
- fpu_status contents so that the next operation has a clean slate. */
- qemu_exc = env->fpu_status.float_exception_flags;
- if (qemu_exc == 0) {
- return;
- }
- env->fpu_status.float_exception_flags = 0;
-
- /* Convert softfloat exception bits to s390 exception bits. */
- s390_exc = 0;
- s390_exc |= convert_bit(qemu_exc, float_flag_invalid, 0x80);
- s390_exc |= convert_bit(qemu_exc, float_flag_divbyzero, 0x40);
- s390_exc |= convert_bit(qemu_exc, float_flag_overflow, 0x20);
- s390_exc |= convert_bit(qemu_exc, float_flag_underflow, 0x10);
- s390_exc |= convert_bit(qemu_exc, float_flag_inexact, 0x08);
-
- /* Install the exceptions that we raised. */
- env->fpc |= s390_exc << 16;
-
- /* Send signals for enabled exceptions. */
- s390_exc &= env->fpc >> 24;
- if (s390_exc) {
- ieee_exception(env, s390_exc, retaddr);
- }
-}
-
-static inline int float_comp_to_cc(CPUS390XState *env, int float_compare)
-{
- S390CPU *cpu = s390_env_get_cpu(env);
-
- switch (float_compare) {
- case float_relation_equal:
- return 0;
- case float_relation_less:
- return 1;
- case float_relation_greater:
- return 2;
- case float_relation_unordered:
- return 3;
- default:
- cpu_abort(CPU(cpu), "unknown return value for float compare\n");
- }
-}
-
-/* condition codes for unary FP ops */
-uint32_t set_cc_nz_f32(float32 v)
-{
- if (float32_is_any_nan(v)) {
- return 3;
- } else if (float32_is_zero(v)) {
- return 0;
- } else if (float32_is_neg(v)) {
- return 1;
- } else {
- return 2;
- }
-}
-
-uint32_t set_cc_nz_f64(float64 v)
-{
- if (float64_is_any_nan(v)) {
- return 3;
- } else if (float64_is_zero(v)) {
- return 0;
- } else if (float64_is_neg(v)) {
- return 1;
- } else {
- return 2;
- }
-}
-
-uint32_t set_cc_nz_f128(float128 v)
-{
- if (float128_is_any_nan(v)) {
- return 3;
- } else if (float128_is_zero(v)) {
- return 0;
- } else if (float128_is_neg(v)) {
- return 1;
- } else {
- return 2;
- }
-}
-
-/* 32-bit FP addition */
-uint64_t HELPER(aeb)(CPUS390XState *env, uint64_t f1, uint64_t f2)
-{
- float32 ret = float32_add(f1, f2, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return ret;
-}
-
-/* 64-bit FP addition */
-uint64_t HELPER(adb)(CPUS390XState *env, uint64_t f1, uint64_t f2)
-{
- float64 ret = float64_add(f1, f2, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return ret;
-}
-
-/* 128-bit FP addition */
-uint64_t HELPER(axb)(CPUS390XState *env, uint64_t ah, uint64_t al,
- uint64_t bh, uint64_t bl)
-{
- float128 ret = float128_add(make_float128(ah, al),
- make_float128(bh, bl),
- &env->fpu_status);
- handle_exceptions(env, GETPC());
- return RET128(ret);
-}
-
-/* 32-bit FP subtraction */
-uint64_t HELPER(seb)(CPUS390XState *env, uint64_t f1, uint64_t f2)
-{
- float32 ret = float32_sub(f1, f2, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return ret;
-}
-
-/* 64-bit FP subtraction */
-uint64_t HELPER(sdb)(CPUS390XState *env, uint64_t f1, uint64_t f2)
-{
- float64 ret = float64_sub(f1, f2, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return ret;
-}
-
-/* 128-bit FP subtraction */
-uint64_t HELPER(sxb)(CPUS390XState *env, uint64_t ah, uint64_t al,
- uint64_t bh, uint64_t bl)
-{
- float128 ret = float128_sub(make_float128(ah, al),
- make_float128(bh, bl),
- &env->fpu_status);
- handle_exceptions(env, GETPC());
- return RET128(ret);
-}
-
-/* 32-bit FP division */
-uint64_t HELPER(deb)(CPUS390XState *env, uint64_t f1, uint64_t f2)
-{
- float32 ret = float32_div(f1, f2, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return ret;
-}
-
-/* 64-bit FP division */
-uint64_t HELPER(ddb)(CPUS390XState *env, uint64_t f1, uint64_t f2)
-{
- float64 ret = float64_div(f1, f2, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return ret;
-}
-
-/* 128-bit FP division */
-uint64_t HELPER(dxb)(CPUS390XState *env, uint64_t ah, uint64_t al,
- uint64_t bh, uint64_t bl)
-{
- float128 ret = float128_div(make_float128(ah, al),
- make_float128(bh, bl),
- &env->fpu_status);
- handle_exceptions(env, GETPC());
- return RET128(ret);
-}
-
-/* 32-bit FP multiplication */
-uint64_t HELPER(meeb)(CPUS390XState *env, uint64_t f1, uint64_t f2)
-{
- float32 ret = float32_mul(f1, f2, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return ret;
-}
-
-/* 64-bit FP multiplication */
-uint64_t HELPER(mdb)(CPUS390XState *env, uint64_t f1, uint64_t f2)
-{
- float64 ret = float64_mul(f1, f2, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return ret;
-}
-
-/* 64/32-bit FP multiplication */
-uint64_t HELPER(mdeb)(CPUS390XState *env, uint64_t f1, uint64_t f2)
-{
- float64 ret = float32_to_float64(f2, &env->fpu_status);
- ret = float64_mul(f1, ret, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return ret;
-}
-
-/* 128-bit FP multiplication */
-uint64_t HELPER(mxb)(CPUS390XState *env, uint64_t ah, uint64_t al,
- uint64_t bh, uint64_t bl)
-{
- float128 ret = float128_mul(make_float128(ah, al),
- make_float128(bh, bl),
- &env->fpu_status);
- handle_exceptions(env, GETPC());
- return RET128(ret);
-}
-
-/* 128/64-bit FP multiplication */
-uint64_t HELPER(mxdb)(CPUS390XState *env, uint64_t ah, uint64_t al,
- uint64_t f2)
-{
- float128 ret = float64_to_float128(f2, &env->fpu_status);
- ret = float128_mul(make_float128(ah, al), ret, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return RET128(ret);
-}
-
-/* convert 32-bit float to 64-bit float */
-uint64_t HELPER(ldeb)(CPUS390XState *env, uint64_t f2)
-{
- float64 ret = float32_to_float64(f2, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return float64_maybe_silence_nan(ret);
-}
-
-/* convert 128-bit float to 64-bit float */
-uint64_t HELPER(ldxb)(CPUS390XState *env, uint64_t ah, uint64_t al)
-{
- float64 ret = float128_to_float64(make_float128(ah, al), &env->fpu_status);
- handle_exceptions(env, GETPC());
- return float64_maybe_silence_nan(ret);
-}
-
-/* convert 64-bit float to 128-bit float */
-uint64_t HELPER(lxdb)(CPUS390XState *env, uint64_t f2)
-{
- float128 ret = float64_to_float128(f2, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return RET128(float128_maybe_silence_nan(ret));
-}
-
-/* convert 32-bit float to 128-bit float */
-uint64_t HELPER(lxeb)(CPUS390XState *env, uint64_t f2)
-{
- float128 ret = float32_to_float128(f2, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return RET128(float128_maybe_silence_nan(ret));
-}
-
-/* convert 64-bit float to 32-bit float */
-uint64_t HELPER(ledb)(CPUS390XState *env, uint64_t f2)
-{
- float32 ret = float64_to_float32(f2, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return float32_maybe_silence_nan(ret);
-}
-
-/* convert 128-bit float to 32-bit float */
-uint64_t HELPER(lexb)(CPUS390XState *env, uint64_t ah, uint64_t al)
-{
- float32 ret = float128_to_float32(make_float128(ah, al), &env->fpu_status);
- handle_exceptions(env, GETPC());
- return float32_maybe_silence_nan(ret);
-}
-
-/* 32-bit FP compare */
-uint32_t HELPER(ceb)(CPUS390XState *env, uint64_t f1, uint64_t f2)
-{
- int cmp = float32_compare_quiet(f1, f2, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return float_comp_to_cc(env, cmp);
-}
-
-/* 64-bit FP compare */
-uint32_t HELPER(cdb)(CPUS390XState *env, uint64_t f1, uint64_t f2)
-{
- int cmp = float64_compare_quiet(f1, f2, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return float_comp_to_cc(env, cmp);
-}
-
-/* 128-bit FP compare */
-uint32_t HELPER(cxb)(CPUS390XState *env, uint64_t ah, uint64_t al,
- uint64_t bh, uint64_t bl)
-{
- int cmp = float128_compare_quiet(make_float128(ah, al),
- make_float128(bh, bl),
- &env->fpu_status);
- handle_exceptions(env, GETPC());
- return float_comp_to_cc(env, cmp);
-}
-
-static int swap_round_mode(CPUS390XState *env, int m3)
-{
- int ret = env->fpu_status.float_rounding_mode;
- switch (m3) {
- case 0:
- /* current mode */
- break;
- case 1:
- /* biased round no nearest */
- case 4:
- /* round to nearest */
- set_float_rounding_mode(float_round_nearest_even, &env->fpu_status);
- break;
- case 5:
- /* round to zero */
- set_float_rounding_mode(float_round_to_zero, &env->fpu_status);
- break;
- case 6:
- /* round to +inf */
- set_float_rounding_mode(float_round_up, &env->fpu_status);
- break;
- case 7:
- /* round to -inf */
- set_float_rounding_mode(float_round_down, &env->fpu_status);
- break;
- }
- return ret;
-}
-
-/* convert 64-bit int to 32-bit float */
-uint64_t HELPER(cegb)(CPUS390XState *env, int64_t v2, uint32_t m3)
-{
- int hold = swap_round_mode(env, m3);
- float32 ret = int64_to_float32(v2, &env->fpu_status);
- set_float_rounding_mode(hold, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return ret;
-}
-
-/* convert 64-bit int to 64-bit float */
-uint64_t HELPER(cdgb)(CPUS390XState *env, int64_t v2, uint32_t m3)
-{
- int hold = swap_round_mode(env, m3);
- float64 ret = int64_to_float64(v2, &env->fpu_status);
- set_float_rounding_mode(hold, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return ret;
-}
-
-/* convert 64-bit int to 128-bit float */
-uint64_t HELPER(cxgb)(CPUS390XState *env, int64_t v2, uint32_t m3)
-{
- int hold = swap_round_mode(env, m3);
- float128 ret = int64_to_float128(v2, &env->fpu_status);
- set_float_rounding_mode(hold, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return RET128(ret);
-}
-
-/* convert 64-bit uint to 32-bit float */
-uint64_t HELPER(celgb)(CPUS390XState *env, uint64_t v2, uint32_t m3)
-{
- int hold = swap_round_mode(env, m3);
- float32 ret = uint64_to_float32(v2, &env->fpu_status);
- set_float_rounding_mode(hold, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return ret;
-}
-
-/* convert 64-bit uint to 64-bit float */
-uint64_t HELPER(cdlgb)(CPUS390XState *env, uint64_t v2, uint32_t m3)
-{
- int hold = swap_round_mode(env, m3);
- float64 ret = uint64_to_float64(v2, &env->fpu_status);
- set_float_rounding_mode(hold, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return ret;
-}
-
-/* convert 64-bit uint to 128-bit float */
-uint64_t HELPER(cxlgb)(CPUS390XState *env, uint64_t v2, uint32_t m3)
-{
- int hold = swap_round_mode(env, m3);
- float128 ret = uint64_to_float128(v2, &env->fpu_status);
- set_float_rounding_mode(hold, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return RET128(ret);
-}
-
-/* convert 32-bit float to 64-bit int */
-uint64_t HELPER(cgeb)(CPUS390XState *env, uint64_t v2, uint32_t m3)
-{
- int hold = swap_round_mode(env, m3);
- int64_t ret = float32_to_int64(v2, &env->fpu_status);
- set_float_rounding_mode(hold, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return ret;
-}
-
-/* convert 64-bit float to 64-bit int */
-uint64_t HELPER(cgdb)(CPUS390XState *env, uint64_t v2, uint32_t m3)
-{
- int hold = swap_round_mode(env, m3);
- int64_t ret = float64_to_int64(v2, &env->fpu_status);
- set_float_rounding_mode(hold, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return ret;
-}
-
-/* convert 128-bit float to 64-bit int */
-uint64_t HELPER(cgxb)(CPUS390XState *env, uint64_t h, uint64_t l, uint32_t m3)
-{
- int hold = swap_round_mode(env, m3);
- float128 v2 = make_float128(h, l);
- int64_t ret = float128_to_int64(v2, &env->fpu_status);
- set_float_rounding_mode(hold, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return ret;
-}
-
-/* convert 32-bit float to 32-bit int */
-uint64_t HELPER(cfeb)(CPUS390XState *env, uint64_t v2, uint32_t m3)
-{
- int hold = swap_round_mode(env, m3);
- int32_t ret = float32_to_int32(v2, &env->fpu_status);
- set_float_rounding_mode(hold, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return ret;
-}
-
-/* convert 64-bit float to 32-bit int */
-uint64_t HELPER(cfdb)(CPUS390XState *env, uint64_t v2, uint32_t m3)
-{
- int hold = swap_round_mode(env, m3);
- int32_t ret = float64_to_int32(v2, &env->fpu_status);
- set_float_rounding_mode(hold, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return ret;
-}
-
-/* convert 128-bit float to 32-bit int */
-uint64_t HELPER(cfxb)(CPUS390XState *env, uint64_t h, uint64_t l, uint32_t m3)
-{
- int hold = swap_round_mode(env, m3);
- float128 v2 = make_float128(h, l);
- int32_t ret = float128_to_int32(v2, &env->fpu_status);
- set_float_rounding_mode(hold, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return ret;
-}
-
-/* convert 32-bit float to 64-bit uint */
-uint64_t HELPER(clgeb)(CPUS390XState *env, uint64_t v2, uint32_t m3)
-{
- int hold = swap_round_mode(env, m3);
- uint64_t ret;
- v2 = float32_to_float64(v2, &env->fpu_status);
- ret = float64_to_uint64(v2, &env->fpu_status);
- set_float_rounding_mode(hold, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return ret;
-}
-
-/* convert 64-bit float to 64-bit uint */
-uint64_t HELPER(clgdb)(CPUS390XState *env, uint64_t v2, uint32_t m3)
-{
- int hold = swap_round_mode(env, m3);
- uint64_t ret = float64_to_uint64(v2, &env->fpu_status);
- set_float_rounding_mode(hold, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return ret;
-}
-
-/* convert 128-bit float to 64-bit uint */
-uint64_t HELPER(clgxb)(CPUS390XState *env, uint64_t h, uint64_t l, uint32_t m3)
-{
- int hold = swap_round_mode(env, m3);
- float128 v2 = make_float128(h, l);
- /* ??? Not 100% correct. */
- uint64_t ret = float128_to_int64(v2, &env->fpu_status);
- set_float_rounding_mode(hold, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return ret;
-}
-
-/* convert 32-bit float to 32-bit uint */
-uint64_t HELPER(clfeb)(CPUS390XState *env, uint64_t v2, uint32_t m3)
-{
- int hold = swap_round_mode(env, m3);
- uint32_t ret = float32_to_uint32(v2, &env->fpu_status);
- set_float_rounding_mode(hold, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return ret;
-}
-
-/* convert 64-bit float to 32-bit uint */
-uint64_t HELPER(clfdb)(CPUS390XState *env, uint64_t v2, uint32_t m3)
-{
- int hold = swap_round_mode(env, m3);
- uint32_t ret = float64_to_uint32(v2, &env->fpu_status);
- set_float_rounding_mode(hold, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return ret;
-}
-
-/* convert 128-bit float to 32-bit uint */
-uint64_t HELPER(clfxb)(CPUS390XState *env, uint64_t h, uint64_t l, uint32_t m3)
-{
- int hold = swap_round_mode(env, m3);
- float128 v2 = make_float128(h, l);
- /* Not 100% correct. */
- uint32_t ret = float128_to_int64(v2, &env->fpu_status);
- set_float_rounding_mode(hold, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return ret;
-}
-
-/* round to integer 32-bit */
-uint64_t HELPER(fieb)(CPUS390XState *env, uint64_t f2, uint32_t m3)
-{
- int hold = swap_round_mode(env, m3);
- float32 ret = float32_round_to_int(f2, &env->fpu_status);
- set_float_rounding_mode(hold, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return ret;
-}
-
-/* round to integer 64-bit */
-uint64_t HELPER(fidb)(CPUS390XState *env, uint64_t f2, uint32_t m3)
-{
- int hold = swap_round_mode(env, m3);
- float64 ret = float64_round_to_int(f2, &env->fpu_status);
- set_float_rounding_mode(hold, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return ret;
-}
-
-/* round to integer 128-bit */
-uint64_t HELPER(fixb)(CPUS390XState *env, uint64_t ah, uint64_t al, uint32_t m3)
-{
- int hold = swap_round_mode(env, m3);
- float128 ret = float128_round_to_int(make_float128(ah, al),
- &env->fpu_status);
- set_float_rounding_mode(hold, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return RET128(ret);
-}
-
-/* 32-bit FP multiply and add */
-uint64_t HELPER(maeb)(CPUS390XState *env, uint64_t f1,
- uint64_t f2, uint64_t f3)
-{
- float32 ret = float32_muladd(f2, f3, f1, 0, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return ret;
-}
-
-/* 64-bit FP multiply and add */
-uint64_t HELPER(madb)(CPUS390XState *env, uint64_t f1,
- uint64_t f2, uint64_t f3)
-{
- float64 ret = float64_muladd(f2, f3, f1, 0, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return ret;
-}
-
-/* 32-bit FP multiply and subtract */
-uint64_t HELPER(mseb)(CPUS390XState *env, uint64_t f1,
- uint64_t f2, uint64_t f3)
-{
- float32 ret = float32_muladd(f2, f3, f1, float_muladd_negate_c,
- &env->fpu_status);
- handle_exceptions(env, GETPC());
- return ret;
-}
-
-/* 64-bit FP multiply and subtract */
-uint64_t HELPER(msdb)(CPUS390XState *env, uint64_t f1,
- uint64_t f2, uint64_t f3)
-{
- float64 ret = float64_muladd(f2, f3, f1, float_muladd_negate_c,
- &env->fpu_status);
- handle_exceptions(env, GETPC());
- return ret;
-}
-
-/* test data class 32-bit */
-uint32_t HELPER(tceb)(uint64_t f1, uint64_t m2)
-{
- float32 v1 = f1;
- int neg = float32_is_neg(v1);
- uint32_t cc = 0;
-
- if ((float32_is_zero(v1) && (m2 & (1 << (11-neg)))) ||
- (float32_is_infinity(v1) && (m2 & (1 << (5-neg)))) ||
- (float32_is_any_nan(v1) && (m2 & (1 << (3-neg)))) ||
- (float32_is_signaling_nan(v1) && (m2 & (1 << (1-neg))))) {
- cc = 1;
- } else if (m2 & (1 << (9-neg))) {
- /* assume normalized number */
- cc = 1;
- }
- /* FIXME: denormalized? */
- return cc;
-}
-
-/* test data class 64-bit */
-uint32_t HELPER(tcdb)(uint64_t v1, uint64_t m2)
-{
- int neg = float64_is_neg(v1);
- uint32_t cc = 0;
-
- if ((float64_is_zero(v1) && (m2 & (1 << (11-neg)))) ||
- (float64_is_infinity(v1) && (m2 & (1 << (5-neg)))) ||
- (float64_is_any_nan(v1) && (m2 & (1 << (3-neg)))) ||
- (float64_is_signaling_nan(v1) && (m2 & (1 << (1-neg))))) {
- cc = 1;
- } else if (m2 & (1 << (9-neg))) {
- /* assume normalized number */
- cc = 1;
- }
- /* FIXME: denormalized? */
- return cc;
-}
-
-/* test data class 128-bit */
-uint32_t HELPER(tcxb)(uint64_t ah, uint64_t al, uint64_t m2)
-{
- float128 v1 = make_float128(ah, al);
- int neg = float128_is_neg(v1);
- uint32_t cc = 0;
-
- if ((float128_is_zero(v1) && (m2 & (1 << (11-neg)))) ||
- (float128_is_infinity(v1) && (m2 & (1 << (5-neg)))) ||
- (float128_is_any_nan(v1) && (m2 & (1 << (3-neg)))) ||
- (float128_is_signaling_nan(v1) && (m2 & (1 << (1-neg))))) {
- cc = 1;
- } else if (m2 & (1 << (9-neg))) {
- /* assume normalized number */
- cc = 1;
- }
- /* FIXME: denormalized? */
- return cc;
-}
-
-/* square root 32-bit */
-uint64_t HELPER(sqeb)(CPUS390XState *env, uint64_t f2)
-{
- float32 ret = float32_sqrt(f2, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return ret;
-}
-
-/* square root 64-bit */
-uint64_t HELPER(sqdb)(CPUS390XState *env, uint64_t f2)
-{
- float64 ret = float64_sqrt(f2, &env->fpu_status);
- handle_exceptions(env, GETPC());
- return ret;
-}
-
-/* square root 128-bit */
-uint64_t HELPER(sqxb)(CPUS390XState *env, uint64_t ah, uint64_t al)
-{
- float128 ret = float128_sqrt(make_float128(ah, al), &env->fpu_status);
- handle_exceptions(env, GETPC());
- return RET128(ret);
-}
-
-static const int fpc_to_rnd[4] = {
- float_round_nearest_even,
- float_round_to_zero,
- float_round_up,
- float_round_down
-};
-
-/* set fpc */
-void HELPER(sfpc)(CPUS390XState *env, uint64_t fpc)
-{
- /* Install everything in the main FPC. */
- env->fpc = fpc;
-
- /* Install the rounding mode in the shadow fpu_status. */
- set_float_rounding_mode(fpc_to_rnd[fpc & 3], &env->fpu_status);
-}
-
-/* set fpc and signal */
-void HELPER(sfas)(CPUS390XState *env, uint64_t val)
-{
- uint32_t signalling = env->fpc;
- uint32_t source = val;
- uint32_t s390_exc;
-
- /* The contents of the source operand are placed in the FPC register;
- then the flags in the FPC register are set to the logical OR of the
- signalling flags and the source flags. */
- env->fpc = source | (signalling & 0x00ff0000);
- set_float_rounding_mode(fpc_to_rnd[source & 3], &env->fpu_status);
-
- /* If any signalling flag is 1 and the corresponding source mask
- is also 1, a simulated-iee-exception trap occurs. */
- s390_exc = (signalling >> 16) & (source >> 24);
- if (s390_exc) {
- ieee_exception(env, s390_exc | 3, GETPC());
- }
-}