LXR qemu/tcg-runtime.c

   1/*
   2 * Tiny Code Generator for QEMU
   3 *
   4 * Copyright (c) 2008 Fabrice Bellard
   5 *
   6 * Permission is hereby granted, free of charge, to any person obtaining a copy
   7 * of this software and associated documentation files (the "Software"), to deal
   8 * in the Software without restriction, including without limitation the rights
   9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10 * copies of the Software, and to permit persons to whom the Software is
  11 * furnished to do so, subject to the following conditions:
  12 *
  13 * The above copyright notice and this permission notice shall be included in
  14 * all copies or substantial portions of the Software.
  15 *
  16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22 * THE SOFTWARE.
  23 */
  24#include "qemu/osdep.h"
  25#include "qemu/host-utils.h"
  26#include "cpu.h"
  27#include "exec/helper-proto.h"
  28#include "exec/cpu_ldst.h"
  29#include "exec/exec-all.h"
  30
  31/* 32-bit helpers */
  32
  33int32_t HELPER(div_i32)(int32_t arg1, int32_t arg2)
  34{
  35    return arg1 / arg2;
  36}
  37
  38int32_t HELPER(rem_i32)(int32_t arg1, int32_t arg2)
  39{
  40    return arg1 % arg2;
  41}
  42
  43uint32_t HELPER(divu_i32)(uint32_t arg1, uint32_t arg2)
  44{
  45    return arg1 / arg2;
  46}
  47
  48uint32_t HELPER(remu_i32)(uint32_t arg1, uint32_t arg2)
  49{
  50    return arg1 % arg2;
  51}
  52
  53/* 64-bit helpers */
  54
  55uint64_t HELPER(shl_i64)(uint64_t arg1, uint64_t arg2)
  56{
  57    return arg1 << arg2;
  58}
  59
  60uint64_t HELPER(shr_i64)(uint64_t arg1, uint64_t arg2)
  61{
  62    return arg1 >> arg2;
  63}
  64
  65int64_t HELPER(sar_i64)(int64_t arg1, int64_t arg2)
  66{
  67    return arg1 >> arg2;
  68}
  69
  70int64_t HELPER(div_i64)(int64_t arg1, int64_t arg2)
  71{
  72    return arg1 / arg2;
  73}
  74
  75int64_t HELPER(rem_i64)(int64_t arg1, int64_t arg2)
  76{
  77    return arg1 % arg2;
  78}
  79
  80uint64_t HELPER(divu_i64)(uint64_t arg1, uint64_t arg2)
  81{
  82    return arg1 / arg2;
  83}
  84
  85uint64_t HELPER(remu_i64)(uint64_t arg1, uint64_t arg2)
  86{
  87    return arg1 % arg2;
  88}
  89
  90uint64_t HELPER(muluh_i64)(uint64_t arg1, uint64_t arg2)
  91{
  92    uint64_t l, h;
  93    mulu64(&l, &h, arg1, arg2);
  94    return h;
  95}
  96
  97int64_t HELPER(mulsh_i64)(int64_t arg1, int64_t arg2)
  98{
  99    uint64_t l, h;
 100    muls64(&l, &h, arg1, arg2);
 101    return h;
 102}
 103
 104void HELPER(exit_atomic)(CPUArchState *env)
 105{
 106    cpu_loop_exit_atomic(ENV_GET_CPU(env), GETPC());
 107}
 108
 109#ifndef CONFIG_SOFTMMU
 110/* The softmmu versions of these helpers are in cputlb.c.  */
 111
 112/* Do not allow unaligned operations to proceed.  Return the host address.  */
 113static void *atomic_mmu_lookup(CPUArchState *env, target_ulong addr,
 114                               int size, uintptr_t retaddr)
 115{
 116    /* Enforce qemu required alignment.  */
 117    if (unlikely(addr & (size - 1))) {
 118        cpu_loop_exit_atomic(ENV_GET_CPU(env), retaddr);
 119    }
 120    return g2h(addr);
 121}
 122
 123/* Macro to call the above, with local variables from the use context.  */
 124#define ATOMIC_MMU_LOOKUP  atomic_mmu_lookup(env, addr, DATA_SIZE, GETPC())
 125
 126#define ATOMIC_NAME(X)   HELPER(glue(glue(atomic_ ## X, SUFFIX), END))
 127#define EXTRA_ARGS
 128
 129#define DATA_SIZE 1
 130#include "atomic_template.h"
 131
 132#define DATA_SIZE 2
 133#include "atomic_template.h"
 134
 135#define DATA_SIZE 4
 136#include "atomic_template.h"
 137
 138#ifdef CONFIG_ATOMIC64
 139#define DATA_SIZE 8
 140#include "atomic_template.h"
 141#endif
 142
 143/* The following is only callable from other helpers, and matches up
 144   with the softmmu version.  */
 145
 146#ifdef CONFIG_ATOMIC128
 147
 148#undef EXTRA_ARGS
 149#undef ATOMIC_NAME
 150#undef ATOMIC_MMU_LOOKUP
 151
 152#define EXTRA_ARGS     , TCGMemOpIdx oi, uintptr_t retaddr
 153#define ATOMIC_NAME(X) \
 154    HELPER(glue(glue(glue(atomic_ ## X, SUFFIX), END), _mmu))
 155#define ATOMIC_MMU_LOOKUP  atomic_mmu_lookup(env, addr, DATA_SIZE, retaddr)
 156
 157#define DATA_SIZE 16
 158#include "atomic_template.h"
 159#endif /* CONFIG_ATOMIC128 */
 160
 161#endif /* !CONFIG_SOFTMMU */
 162