xref: /openbmc/qemu/accel/tcg/tcg-runtime.c (revision 520e210c)
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 
34 /* 32-bit helpers */
35 
36 int32_t HELPER(div_i32)(int32_t arg1, int32_t arg2)
37 {
38     return arg1 / arg2;
39 }
40 
41 int32_t HELPER(rem_i32)(int32_t arg1, int32_t arg2)
42 {
43     return arg1 % arg2;
44 }
45 
46 uint32_t HELPER(divu_i32)(uint32_t arg1, uint32_t arg2)
47 {
48     return arg1 / arg2;
49 }
50 
51 uint32_t HELPER(remu_i32)(uint32_t arg1, uint32_t arg2)
52 {
53     return arg1 % arg2;
54 }
55 
56 /* 64-bit helpers */
57 
58 uint64_t HELPER(shl_i64)(uint64_t arg1, uint64_t arg2)
59 {
60     return arg1 << arg2;
61 }
62 
63 uint64_t HELPER(shr_i64)(uint64_t arg1, uint64_t arg2)
64 {
65     return arg1 >> arg2;
66 }
67 
68 int64_t HELPER(sar_i64)(int64_t arg1, int64_t arg2)
69 {
70     return arg1 >> arg2;
71 }
72 
73 int64_t HELPER(div_i64)(int64_t arg1, int64_t arg2)
74 {
75     return arg1 / arg2;
76 }
77 
78 int64_t HELPER(rem_i64)(int64_t arg1, int64_t arg2)
79 {
80     return arg1 % arg2;
81 }
82 
83 uint64_t HELPER(divu_i64)(uint64_t arg1, uint64_t arg2)
84 {
85     return arg1 / arg2;
86 }
87 
88 uint64_t HELPER(remu_i64)(uint64_t arg1, uint64_t arg2)
89 {
90     return arg1 % arg2;
91 }
92 
93 uint64_t HELPER(muluh_i64)(uint64_t arg1, uint64_t arg2)
94 {
95     uint64_t l, h;
96     mulu64(&l, &h, arg1, arg2);
97     return h;
98 }
99 
100 int64_t HELPER(mulsh_i64)(int64_t arg1, int64_t arg2)
101 {
102     uint64_t l, h;
103     muls64(&l, &h, arg1, arg2);
104     return h;
105 }
106 
107 uint32_t HELPER(clz_i32)(uint32_t arg, uint32_t zero_val)
108 {
109     return arg ? clz32(arg) : zero_val;
110 }
111 
112 uint32_t HELPER(ctz_i32)(uint32_t arg, uint32_t zero_val)
113 {
114     return arg ? ctz32(arg) : zero_val;
115 }
116 
117 uint64_t HELPER(clz_i64)(uint64_t arg, uint64_t zero_val)
118 {
119     return arg ? clz64(arg) : zero_val;
120 }
121 
122 uint64_t HELPER(ctz_i64)(uint64_t arg, uint64_t zero_val)
123 {
124     return arg ? ctz64(arg) : zero_val;
125 }
126 
127 uint32_t HELPER(clrsb_i32)(uint32_t arg)
128 {
129     return clrsb32(arg);
130 }
131 
132 uint64_t HELPER(clrsb_i64)(uint64_t arg)
133 {
134     return clrsb64(arg);
135 }
136 
137 uint32_t HELPER(ctpop_i32)(uint32_t arg)
138 {
139     return ctpop32(arg);
140 }
141 
142 uint64_t HELPER(ctpop_i64)(uint64_t arg)
143 {
144     return ctpop64(arg);
145 }
146 
147 void *HELPER(lookup_tb_ptr)(CPUArchState *env)
148 {
149     CPUState *cpu = ENV_GET_CPU(env);
150     TranslationBlock *tb;
151     target_ulong cs_base, pc;
152     uint32_t flags;
153 
154     tb = tb_lookup__cpu_state(cpu, &pc, &cs_base, &flags, curr_cflags());
155     if (tb == NULL) {
156         return tcg_ctx->code_gen_epilogue;
157     }
158     qemu_log_mask_and_addr(CPU_LOG_EXEC, pc,
159                            "Chain %d: %p ["
160                            TARGET_FMT_lx "/" TARGET_FMT_lx "/%#x] %s\n",
161                            cpu->cpu_index, tb->tc.ptr, cs_base, pc, flags,
162                            lookup_symbol(pc));
163     return tb->tc.ptr;
164 }
165 
166 void HELPER(exit_atomic)(CPUArchState *env)
167 {
168     cpu_loop_exit_atomic(ENV_GET_CPU(env), GETPC());
169 }
170