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 #include "exec/tb-lookup.h" 31 #include "disas/disas.h" 32 #include "exec/log.h" 33 #include "tcg/tcg.h" 34 35 /* 32-bit helpers */ 36 37 int32_t HELPER(div_i32)(int32_t arg1, int32_t arg2) 38 { 39 return arg1 / arg2; 40 } 41 42 int32_t HELPER(rem_i32)(int32_t arg1, int32_t arg2) 43 { 44 return arg1 % arg2; 45 } 46 47 uint32_t HELPER(divu_i32)(uint32_t arg1, uint32_t arg2) 48 { 49 return arg1 / arg2; 50 } 51 52 uint32_t HELPER(remu_i32)(uint32_t arg1, uint32_t arg2) 53 { 54 return arg1 % arg2; 55 } 56 57 /* 64-bit helpers */ 58 59 uint64_t HELPER(shl_i64)(uint64_t arg1, uint64_t arg2) 60 { 61 return arg1 << arg2; 62 } 63 64 uint64_t HELPER(shr_i64)(uint64_t arg1, uint64_t arg2) 65 { 66 return arg1 >> arg2; 67 } 68 69 int64_t HELPER(sar_i64)(int64_t arg1, int64_t arg2) 70 { 71 return arg1 >> arg2; 72 } 73 74 int64_t HELPER(div_i64)(int64_t arg1, int64_t arg2) 75 { 76 return arg1 / arg2; 77 } 78 79 int64_t HELPER(rem_i64)(int64_t arg1, int64_t arg2) 80 { 81 return arg1 % arg2; 82 } 83 84 uint64_t HELPER(divu_i64)(uint64_t arg1, uint64_t arg2) 85 { 86 return arg1 / arg2; 87 } 88 89 uint64_t HELPER(remu_i64)(uint64_t arg1, uint64_t arg2) 90 { 91 return arg1 % arg2; 92 } 93 94 uint64_t HELPER(muluh_i64)(uint64_t arg1, uint64_t arg2) 95 { 96 uint64_t l, h; 97 mulu64(&l, &h, arg1, arg2); 98 return h; 99 } 100 101 int64_t HELPER(mulsh_i64)(int64_t arg1, int64_t arg2) 102 { 103 uint64_t l, h; 104 muls64(&l, &h, arg1, arg2); 105 return h; 106 } 107 108 uint32_t HELPER(clz_i32)(uint32_t arg, uint32_t zero_val) 109 { 110 return arg ? clz32(arg) : zero_val; 111 } 112 113 uint32_t HELPER(ctz_i32)(uint32_t arg, uint32_t zero_val) 114 { 115 return arg ? ctz32(arg) : zero_val; 116 } 117 118 uint64_t HELPER(clz_i64)(uint64_t arg, uint64_t zero_val) 119 { 120 return arg ? clz64(arg) : zero_val; 121 } 122 123 uint64_t HELPER(ctz_i64)(uint64_t arg, uint64_t zero_val) 124 { 125 return arg ? ctz64(arg) : zero_val; 126 } 127 128 uint32_t HELPER(clrsb_i32)(uint32_t arg) 129 { 130 return clrsb32(arg); 131 } 132 133 uint64_t HELPER(clrsb_i64)(uint64_t arg) 134 { 135 return clrsb64(arg); 136 } 137 138 uint32_t HELPER(ctpop_i32)(uint32_t arg) 139 { 140 return ctpop32(arg); 141 } 142 143 uint64_t HELPER(ctpop_i64)(uint64_t arg) 144 { 145 return ctpop64(arg); 146 } 147 148 void *HELPER(lookup_tb_ptr)(CPUArchState *env) 149 { 150 CPUState *cpu = env_cpu(env); 151 TranslationBlock *tb; 152 target_ulong cs_base, pc; 153 uint32_t flags; 154 155 tb = tb_lookup__cpu_state(cpu, &pc, &cs_base, &flags, curr_cflags()); 156 if (tb == NULL) { 157 return tcg_ctx->code_gen_epilogue; 158 } 159 qemu_log_mask_and_addr(CPU_LOG_EXEC, pc, 160 "Chain %d: %p [" 161 TARGET_FMT_lx "/" TARGET_FMT_lx "/%#x] %s\n", 162 cpu->cpu_index, tb->tc.ptr, cs_base, pc, flags, 163 lookup_symbol(pc)); 164 return tb->tc.ptr; 165 } 166 167 void HELPER(exit_atomic)(CPUArchState *env) 168 { 169 cpu_loop_exit_atomic(env_cpu(env), GETPC()); 170 } 171