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Diffstat (limited to 'qemu/target-s390x/cc_helper.c')
-rw-r--r--qemu/target-s390x/cc_helper.c569
1 files changed, 0 insertions, 569 deletions
diff --git a/qemu/target-s390x/cc_helper.c b/qemu/target-s390x/cc_helper.c
deleted file mode 100644
index 0d9411bdf..000000000
--- a/qemu/target-s390x/cc_helper.c
+++ /dev/null
@@ -1,569 +0,0 @@
-/*
- * S/390 condition code 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/helper-proto.h"
-#include "qemu/host-utils.h"
-
-/* #define DEBUG_HELPER */
-#ifdef DEBUG_HELPER
-#define HELPER_LOG(x...) qemu_log(x)
-#else
-#define HELPER_LOG(x...)
-#endif
-
-static uint32_t cc_calc_ltgt_32(int32_t src, int32_t dst)
-{
- if (src == dst) {
- return 0;
- } else if (src < dst) {
- return 1;
- } else {
- return 2;
- }
-}
-
-static uint32_t cc_calc_ltgt0_32(int32_t dst)
-{
- return cc_calc_ltgt_32(dst, 0);
-}
-
-static uint32_t cc_calc_ltgt_64(int64_t src, int64_t dst)
-{
- if (src == dst) {
- return 0;
- } else if (src < dst) {
- return 1;
- } else {
- return 2;
- }
-}
-
-static uint32_t cc_calc_ltgt0_64(int64_t dst)
-{
- return cc_calc_ltgt_64(dst, 0);
-}
-
-static uint32_t cc_calc_ltugtu_32(uint32_t src, uint32_t dst)
-{
- if (src == dst) {
- return 0;
- } else if (src < dst) {
- return 1;
- } else {
- return 2;
- }
-}
-
-static uint32_t cc_calc_ltugtu_64(uint64_t src, uint64_t dst)
-{
- if (src == dst) {
- return 0;
- } else if (src < dst) {
- return 1;
- } else {
- return 2;
- }
-}
-
-static uint32_t cc_calc_tm_32(uint32_t val, uint32_t mask)
-{
- uint32_t r = val & mask;
-
- if (r == 0) {
- return 0;
- } else if (r == mask) {
- return 3;
- } else {
- return 1;
- }
-}
-
-static uint32_t cc_calc_tm_64(uint64_t val, uint64_t mask)
-{
- uint64_t r = val & mask;
-
- if (r == 0) {
- return 0;
- } else if (r == mask) {
- return 3;
- } else {
- int top = clz64(mask);
- if ((int64_t)(val << top) < 0) {
- return 2;
- } else {
- return 1;
- }
- }
-}
-
-static uint32_t cc_calc_nz(uint64_t dst)
-{
- return !!dst;
-}
-
-static uint32_t cc_calc_add_64(int64_t a1, int64_t a2, int64_t ar)
-{
- if ((a1 > 0 && a2 > 0 && ar < 0) || (a1 < 0 && a2 < 0 && ar > 0)) {
- return 3; /* overflow */
- } else {
- if (ar < 0) {
- return 1;
- } else if (ar > 0) {
- return 2;
- } else {
- return 0;
- }
- }
-}
-
-static uint32_t cc_calc_addu_64(uint64_t a1, uint64_t a2, uint64_t ar)
-{
- return (ar != 0) + 2 * (ar < a1);
-}
-
-static uint32_t cc_calc_addc_64(uint64_t a1, uint64_t a2, uint64_t ar)
-{
- /* Recover a2 + carry_in. */
- uint64_t a2c = ar - a1;
- /* Check for a2+carry_in overflow, then a1+a2c overflow. */
- int carry_out = (a2c < a2) || (ar < a1);
-
- return (ar != 0) + 2 * carry_out;
-}
-
-static uint32_t cc_calc_sub_64(int64_t a1, int64_t a2, int64_t ar)
-{
- if ((a1 > 0 && a2 < 0 && ar < 0) || (a1 < 0 && a2 > 0 && ar > 0)) {
- return 3; /* overflow */
- } else {
- if (ar < 0) {
- return 1;
- } else if (ar > 0) {
- return 2;
- } else {
- return 0;
- }
- }
-}
-
-static uint32_t cc_calc_subu_64(uint64_t a1, uint64_t a2, uint64_t ar)
-{
- if (ar == 0) {
- return 2;
- } else {
- if (a2 > a1) {
- return 1;
- } else {
- return 3;
- }
- }
-}
-
-static uint32_t cc_calc_subb_64(uint64_t a1, uint64_t a2, uint64_t ar)
-{
- int borrow_out;
-
- if (ar != a1 - a2) { /* difference means borrow-in */
- borrow_out = (a2 >= a1);
- } else {
- borrow_out = (a2 > a1);
- }
-
- return (ar != 0) + 2 * !borrow_out;
-}
-
-static uint32_t cc_calc_abs_64(int64_t dst)
-{
- if ((uint64_t)dst == 0x8000000000000000ULL) {
- return 3;
- } else if (dst) {
- return 2;
- } else {
- return 0;
- }
-}
-
-static uint32_t cc_calc_nabs_64(int64_t dst)
-{
- return !!dst;
-}
-
-static uint32_t cc_calc_comp_64(int64_t dst)
-{
- if ((uint64_t)dst == 0x8000000000000000ULL) {
- return 3;
- } else if (dst < 0) {
- return 1;
- } else if (dst > 0) {
- return 2;
- } else {
- return 0;
- }
-}
-
-
-static uint32_t cc_calc_add_32(int32_t a1, int32_t a2, int32_t ar)
-{
- if ((a1 > 0 && a2 > 0 && ar < 0) || (a1 < 0 && a2 < 0 && ar > 0)) {
- return 3; /* overflow */
- } else {
- if (ar < 0) {
- return 1;
- } else if (ar > 0) {
- return 2;
- } else {
- return 0;
- }
- }
-}
-
-static uint32_t cc_calc_addu_32(uint32_t a1, uint32_t a2, uint32_t ar)
-{
- return (ar != 0) + 2 * (ar < a1);
-}
-
-static uint32_t cc_calc_addc_32(uint32_t a1, uint32_t a2, uint32_t ar)
-{
- /* Recover a2 + carry_in. */
- uint32_t a2c = ar - a1;
- /* Check for a2+carry_in overflow, then a1+a2c overflow. */
- int carry_out = (a2c < a2) || (ar < a1);
-
- return (ar != 0) + 2 * carry_out;
-}
-
-static uint32_t cc_calc_sub_32(int32_t a1, int32_t a2, int32_t ar)
-{
- if ((a1 > 0 && a2 < 0 && ar < 0) || (a1 < 0 && a2 > 0 && ar > 0)) {
- return 3; /* overflow */
- } else {
- if (ar < 0) {
- return 1;
- } else if (ar > 0) {
- return 2;
- } else {
- return 0;
- }
- }
-}
-
-static uint32_t cc_calc_subu_32(uint32_t a1, uint32_t a2, uint32_t ar)
-{
- if (ar == 0) {
- return 2;
- } else {
- if (a2 > a1) {
- return 1;
- } else {
- return 3;
- }
- }
-}
-
-static uint32_t cc_calc_subb_32(uint32_t a1, uint32_t a2, uint32_t ar)
-{
- int borrow_out;
-
- if (ar != a1 - a2) { /* difference means borrow-in */
- borrow_out = (a2 >= a1);
- } else {
- borrow_out = (a2 > a1);
- }
-
- return (ar != 0) + 2 * !borrow_out;
-}
-
-static uint32_t cc_calc_abs_32(int32_t dst)
-{
- if ((uint32_t)dst == 0x80000000UL) {
- return 3;
- } else if (dst) {
- return 2;
- } else {
- return 0;
- }
-}
-
-static uint32_t cc_calc_nabs_32(int32_t dst)
-{
- return !!dst;
-}
-
-static uint32_t cc_calc_comp_32(int32_t dst)
-{
- if ((uint32_t)dst == 0x80000000UL) {
- return 3;
- } else if (dst < 0) {
- return 1;
- } else if (dst > 0) {
- return 2;
- } else {
- return 0;
- }
-}
-
-/* calculate condition code for insert character under mask insn */
-static uint32_t cc_calc_icm(uint64_t mask, uint64_t val)
-{
- if ((val & mask) == 0) {
- return 0;
- } else {
- int top = clz64(mask);
- if ((int64_t)(val << top) < 0) {
- return 1;
- } else {
- return 2;
- }
- }
-}
-
-static uint32_t cc_calc_sla_32(uint32_t src, int shift)
-{
- uint32_t mask = ((1U << shift) - 1U) << (32 - shift);
- uint32_t sign = 1U << 31;
- uint32_t match;
- int32_t r;
-
- /* Check if the sign bit stays the same. */
- if (src & sign) {
- match = mask;
- } else {
- match = 0;
- }
- if ((src & mask) != match) {
- /* Overflow. */
- return 3;
- }
-
- r = ((src << shift) & ~sign) | (src & sign);
- if (r == 0) {
- return 0;
- } else if (r < 0) {
- return 1;
- }
- return 2;
-}
-
-static uint32_t cc_calc_sla_64(uint64_t src, int shift)
-{
- uint64_t mask = ((1ULL << shift) - 1ULL) << (64 - shift);
- uint64_t sign = 1ULL << 63;
- uint64_t match;
- int64_t r;
-
- /* Check if the sign bit stays the same. */
- if (src & sign) {
- match = mask;
- } else {
- match = 0;
- }
- if ((src & mask) != match) {
- /* Overflow. */
- return 3;
- }
-
- r = ((src << shift) & ~sign) | (src & sign);
- if (r == 0) {
- return 0;
- } else if (r < 0) {
- return 1;
- }
- return 2;
-}
-
-static uint32_t cc_calc_flogr(uint64_t dst)
-{
- return dst ? 2 : 0;
-}
-
-static uint32_t do_calc_cc(CPUS390XState *env, uint32_t cc_op,
- uint64_t src, uint64_t dst, uint64_t vr)
-{
- S390CPU *cpu = s390_env_get_cpu(env);
- uint32_t r = 0;
-
- switch (cc_op) {
- case CC_OP_CONST0:
- case CC_OP_CONST1:
- case CC_OP_CONST2:
- case CC_OP_CONST3:
- /* cc_op value _is_ cc */
- r = cc_op;
- break;
- case CC_OP_LTGT0_32:
- r = cc_calc_ltgt0_32(dst);
- break;
- case CC_OP_LTGT0_64:
- r = cc_calc_ltgt0_64(dst);
- break;
- case CC_OP_LTGT_32:
- r = cc_calc_ltgt_32(src, dst);
- break;
- case CC_OP_LTGT_64:
- r = cc_calc_ltgt_64(src, dst);
- break;
- case CC_OP_LTUGTU_32:
- r = cc_calc_ltugtu_32(src, dst);
- break;
- case CC_OP_LTUGTU_64:
- r = cc_calc_ltugtu_64(src, dst);
- break;
- case CC_OP_TM_32:
- r = cc_calc_tm_32(src, dst);
- break;
- case CC_OP_TM_64:
- r = cc_calc_tm_64(src, dst);
- break;
- case CC_OP_NZ:
- r = cc_calc_nz(dst);
- break;
- case CC_OP_ADD_64:
- r = cc_calc_add_64(src, dst, vr);
- break;
- case CC_OP_ADDU_64:
- r = cc_calc_addu_64(src, dst, vr);
- break;
- case CC_OP_ADDC_64:
- r = cc_calc_addc_64(src, dst, vr);
- break;
- case CC_OP_SUB_64:
- r = cc_calc_sub_64(src, dst, vr);
- break;
- case CC_OP_SUBU_64:
- r = cc_calc_subu_64(src, dst, vr);
- break;
- case CC_OP_SUBB_64:
- r = cc_calc_subb_64(src, dst, vr);
- break;
- case CC_OP_ABS_64:
- r = cc_calc_abs_64(dst);
- break;
- case CC_OP_NABS_64:
- r = cc_calc_nabs_64(dst);
- break;
- case CC_OP_COMP_64:
- r = cc_calc_comp_64(dst);
- break;
-
- case CC_OP_ADD_32:
- r = cc_calc_add_32(src, dst, vr);
- break;
- case CC_OP_ADDU_32:
- r = cc_calc_addu_32(src, dst, vr);
- break;
- case CC_OP_ADDC_32:
- r = cc_calc_addc_32(src, dst, vr);
- break;
- case CC_OP_SUB_32:
- r = cc_calc_sub_32(src, dst, vr);
- break;
- case CC_OP_SUBU_32:
- r = cc_calc_subu_32(src, dst, vr);
- break;
- case CC_OP_SUBB_32:
- r = cc_calc_subb_32(src, dst, vr);
- break;
- case CC_OP_ABS_32:
- r = cc_calc_abs_32(dst);
- break;
- case CC_OP_NABS_32:
- r = cc_calc_nabs_32(dst);
- break;
- case CC_OP_COMP_32:
- r = cc_calc_comp_32(dst);
- break;
-
- case CC_OP_ICM:
- r = cc_calc_icm(src, dst);
- break;
- case CC_OP_SLA_32:
- r = cc_calc_sla_32(src, dst);
- break;
- case CC_OP_SLA_64:
- r = cc_calc_sla_64(src, dst);
- break;
- case CC_OP_FLOGR:
- r = cc_calc_flogr(dst);
- break;
-
- case CC_OP_NZ_F32:
- r = set_cc_nz_f32(dst);
- break;
- case CC_OP_NZ_F64:
- r = set_cc_nz_f64(dst);
- break;
- case CC_OP_NZ_F128:
- r = set_cc_nz_f128(make_float128(src, dst));
- break;
-
- default:
- cpu_abort(CPU(cpu), "Unknown CC operation: %s\n", cc_name(cc_op));
- }
-
- HELPER_LOG("%s: %15s 0x%016lx 0x%016lx 0x%016lx = %d\n", __func__,
- cc_name(cc_op), src, dst, vr, r);
- return r;
-}
-
-uint32_t calc_cc(CPUS390XState *env, uint32_t cc_op, uint64_t src, uint64_t dst,
- uint64_t vr)
-{
- return do_calc_cc(env, cc_op, src, dst, vr);
-}
-
-uint32_t HELPER(calc_cc)(CPUS390XState *env, uint32_t cc_op, uint64_t src,
- uint64_t dst, uint64_t vr)
-{
- return do_calc_cc(env, cc_op, src, dst, vr);
-}
-
-#ifndef CONFIG_USER_ONLY
-void HELPER(load_psw)(CPUS390XState *env, uint64_t mask, uint64_t addr)
-{
- load_psw(env, mask, addr);
- cpu_loop_exit(CPU(s390_env_get_cpu(env)));
-}
-
-void HELPER(sacf)(CPUS390XState *env, uint64_t a1)
-{
- HELPER_LOG("%s: %16" PRIx64 "\n", __func__, a1);
-
- switch (a1 & 0xf00) {
- case 0x000:
- env->psw.mask &= ~PSW_MASK_ASC;
- env->psw.mask |= PSW_ASC_PRIMARY;
- break;
- case 0x100:
- env->psw.mask &= ~PSW_MASK_ASC;
- env->psw.mask |= PSW_ASC_SECONDARY;
- break;
- case 0x300:
- env->psw.mask &= ~PSW_MASK_ASC;
- env->psw.mask |= PSW_ASC_HOME;
- break;
- default:
- HELPER_LOG("unknown sacf mode: %" PRIx64 "\n", a1);
- program_interrupt(env, PGM_SPECIFICATION, 2);
- break;
- }
-}
-#endif