4 * Copyright (c) 2003-2005 Fabrice Bellard
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
21 #include "host-utils.h"
25 void helper_raise_exception(CPUState *env, int tt)
27 env->exception_index = tt;
31 void helper_debug(CPUState *env)
33 env->exception_index = EXCP_DEBUG;
38 target_ulong helper_popc(target_ulong val)
43 void helper_tick_set_count(void *opaque, uint64_t count)
45 #if !defined(CONFIG_USER_ONLY)
46 cpu_tick_set_count(opaque, count);
50 uint64_t helper_tick_get_count(void *opaque)
52 #if !defined(CONFIG_USER_ONLY)
53 return cpu_tick_get_count(opaque);
59 void helper_tick_set_limit(void *opaque, uint64_t limit)
61 #if !defined(CONFIG_USER_ONLY)
62 cpu_tick_set_limit(opaque, limit);
67 static target_ulong helper_udiv_common(CPUState *env, target_ulong a,
68 target_ulong b, int cc)
74 x0 = (a & 0xffffffff) | ((int64_t) (env->y) << 32);
75 x1 = (b & 0xffffffff);
78 helper_raise_exception(env, TT_DIV_ZERO);
82 if (x0 > 0xffffffff) {
89 env->cc_src2 = overflow;
90 env->cc_op = CC_OP_DIV;
95 target_ulong helper_udiv(CPUState *env, target_ulong a, target_ulong b)
97 return helper_udiv_common(env, a, b, 0);
100 target_ulong helper_udiv_cc(CPUState *env, target_ulong a, target_ulong b)
102 return helper_udiv_common(env, a, b, 1);
105 static target_ulong helper_sdiv_common(CPUState *env, target_ulong a,
106 target_ulong b, int cc)
112 x0 = (a & 0xffffffff) | ((int64_t) (env->y) << 32);
113 x1 = (b & 0xffffffff);
116 helper_raise_exception(env, TT_DIV_ZERO);
120 if ((int32_t) x0 != x0) {
121 x0 = x0 < 0 ? 0x80000000 : 0x7fffffff;
127 env->cc_src2 = overflow;
128 env->cc_op = CC_OP_DIV;
133 target_ulong helper_sdiv(CPUState *env, target_ulong a, target_ulong b)
135 return helper_sdiv_common(env, a, b, 0);
138 target_ulong helper_sdiv_cc(CPUState *env, target_ulong a, target_ulong b)
140 return helper_sdiv_common(env, a, b, 1);