aboutsummaryrefslogtreecommitdiff
path: root/target-s390x/int_helper.c
diff options
context:
space:
mode:
authorThomas Huth <thuth@redhat.com>2016-10-11 08:56:52 +0200
committerThomas Huth <thuth@redhat.com>2016-12-20 21:52:12 +0100
commitfcf5ef2ab52c621a4617ebbef36bf43b4003f4c0 (patch)
tree2b450d96b01455df8ed908bf8f26ddc388a03380 /target-s390x/int_helper.c
parent82ecffa8c050bf5bbc13329e9b65eac1caa5b55c (diff)
Move target-* CPU file into a target/ folder
We've currently got 18 architectures in QEMU, and thus 18 target-xxx folders in the root folder of the QEMU source tree. More architectures (e.g. RISC-V, AVR) are likely to be included soon, too, so the main folder of the QEMU sources slowly gets quite overcrowded with the target-xxx folders. To disburden the main folder a little bit, let's move the target-xxx folders into a dedicated target/ folder, so that target-xxx/ simply becomes target/xxx/ instead. Acked-by: Laurent Vivier <laurent@vivier.eu> [m68k part] Acked-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> [tricore part] Acked-by: Michael Walle <michael@walle.cc> [lm32 part] Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> [s390x part] Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> [s390x part] Acked-by: Eduardo Habkost <ehabkost@redhat.com> [i386 part] Acked-by: Artyom Tarasenko <atar4qemu@gmail.com> [sparc part] Acked-by: Richard Henderson <rth@twiddle.net> [alpha part] Acked-by: Max Filippov <jcmvbkbc@gmail.com> [xtensa part] Reviewed-by: David Gibson <david@gibson.dropbear.id.au> [ppc part] Acked-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> [cris&microblaze part] Acked-by: Guan Xuetao <gxt@mprc.pku.edu.cn> [unicore32 part] Signed-off-by: Thomas Huth <thuth@redhat.com>
Diffstat (limited to 'target-s390x/int_helper.c')
-rw-r--r--target-s390x/int_helper.c156
1 files changed, 0 insertions, 156 deletions
diff --git a/target-s390x/int_helper.c b/target-s390x/int_helper.c
deleted file mode 100644
index 370c94da55..0000000000
--- a/target-s390x/int_helper.c
+++ /dev/null
@@ -1,156 +0,0 @@
-/*
- * S/390 integer 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/exec-all.h"
-#include "qemu/host-utils.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
-
-/* 64/32 -> 32 signed division */
-int64_t HELPER(divs32)(CPUS390XState *env, int64_t a, int64_t b64)
-{
- int32_t ret, b = b64;
- int64_t q;
-
- if (b == 0) {
- runtime_exception(env, PGM_FIXPT_DIVIDE, GETPC());
- }
-
- ret = q = a / b;
- env->retxl = a % b;
-
- /* Catch non-representable quotient. */
- if (ret != q) {
- runtime_exception(env, PGM_FIXPT_DIVIDE, GETPC());
- }
-
- return ret;
-}
-
-/* 64/32 -> 32 unsigned division */
-uint64_t HELPER(divu32)(CPUS390XState *env, uint64_t a, uint64_t b64)
-{
- uint32_t ret, b = b64;
- uint64_t q;
-
- if (b == 0) {
- runtime_exception(env, PGM_FIXPT_DIVIDE, GETPC());
- }
-
- ret = q = a / b;
- env->retxl = a % b;
-
- /* Catch non-representable quotient. */
- if (ret != q) {
- runtime_exception(env, PGM_FIXPT_DIVIDE, GETPC());
- }
-
- return ret;
-}
-
-/* 64/64 -> 64 signed division */
-int64_t HELPER(divs64)(CPUS390XState *env, int64_t a, int64_t b)
-{
- /* Catch divide by zero, and non-representable quotient (MIN / -1). */
- if (b == 0 || (b == -1 && a == (1ll << 63))) {
- runtime_exception(env, PGM_FIXPT_DIVIDE, GETPC());
- }
- env->retxl = a % b;
- return a / b;
-}
-
-/* 128 -> 64/64 unsigned division */
-uint64_t HELPER(divu64)(CPUS390XState *env, uint64_t ah, uint64_t al,
- uint64_t b)
-{
- uint64_t ret;
- /* Signal divide by zero. */
- if (b == 0) {
- runtime_exception(env, PGM_FIXPT_DIVIDE, GETPC());
- }
- if (ah == 0) {
- /* 64 -> 64/64 case */
- env->retxl = al % b;
- ret = al / b;
- } else {
- /* ??? Move i386 idivq helper to host-utils. */
-#ifdef CONFIG_INT128
- __uint128_t a = ((__uint128_t)ah << 64) | al;
- __uint128_t q = a / b;
- env->retxl = a % b;
- ret = q;
- if (ret != q) {
- runtime_exception(env, PGM_FIXPT_DIVIDE, GETPC());
- }
-#else
- S390CPU *cpu = s390_env_get_cpu(env);
- /* 32-bit hosts would need special wrapper functionality - just abort if
- we encounter such a case; it's very unlikely anyways. */
- cpu_abort(CPU(cpu), "128 -> 64/64 division not implemented\n");
-#endif
- }
- return ret;
-}
-
-/* count leading zeros, for find leftmost one */
-uint64_t HELPER(clz)(uint64_t v)
-{
- return clz64(v);
-}
-
-uint64_t HELPER(cvd)(int32_t reg)
-{
- /* positive 0 */
- uint64_t dec = 0x0c;
- int64_t bin = reg;
- int shift;
-
- if (bin < 0) {
- bin = -bin;
- dec = 0x0d;
- }
-
- for (shift = 4; (shift < 64) && bin; shift += 4) {
- dec |= (bin % 10) << shift;
- bin /= 10;
- }
-
- return dec;
-}
-
-uint64_t HELPER(popcnt)(uint64_t r2)
-{
- uint64_t ret = 0;
- int i;
-
- for (i = 0; i < 64; i += 8) {
- uint64_t t = ctpop32((r2 >> i) & 0xff);
- ret |= t << i;
- }
- return ret;
-}