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1 | 831b7825 | ths | /*
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2 | 831b7825 | ths | * qemu user main
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3 | 831b7825 | ths | *
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4 | 831b7825 | ths | * Copyright (c) 2003 Fabrice Bellard
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5 | 831b7825 | ths | * Copyright (c) 2006 Pierre d'Herbemont
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6 | 831b7825 | ths | *
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7 | 831b7825 | ths | * This program is free software; you can redistribute it and/or modify
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8 | 831b7825 | ths | * it under the terms of the GNU General Public License as published by
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9 | 831b7825 | ths | * the Free Software Foundation; either version 2 of the License, or
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10 | 831b7825 | ths | * (at your option) any later version.
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11 | 831b7825 | ths | *
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12 | 831b7825 | ths | * This program is distributed in the hope that it will be useful,
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13 | 831b7825 | ths | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 | 831b7825 | ths | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 | 831b7825 | ths | * GNU General Public License for more details.
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16 | 831b7825 | ths | *
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17 | 831b7825 | ths | * You should have received a copy of the GNU General Public License
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18 | 831b7825 | ths | * along with this program; if not, write to the Free Software
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19 | 831b7825 | ths | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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20 | 831b7825 | ths | */
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21 | 831b7825 | ths | #include <stdlib.h> |
22 | 831b7825 | ths | #include <stdio.h> |
23 | 831b7825 | ths | #include <stdarg.h> |
24 | 831b7825 | ths | #include <string.h> |
25 | 831b7825 | ths | #include <errno.h> |
26 | 831b7825 | ths | #include <unistd.h> |
27 | 831b7825 | ths | |
28 | 831b7825 | ths | #include <sys/syscall.h> |
29 | 831b7825 | ths | #include <sys/mman.h> |
30 | 831b7825 | ths | |
31 | 831b7825 | ths | #include "qemu.h" |
32 | 831b7825 | ths | |
33 | 831b7825 | ths | #define DEBUG_LOGFILE "/tmp/qemu.log" |
34 | 831b7825 | ths | |
35 | 831b7825 | ths | #ifdef __APPLE__
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36 | 831b7825 | ths | #include <crt_externs.h> |
37 | 831b7825 | ths | # define environ (*_NSGetEnviron())
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38 | 831b7825 | ths | #endif
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39 | 831b7825 | ths | |
40 | 831b7825 | ths | #include <mach/mach_init.h> |
41 | 831b7825 | ths | #include <mach/vm_map.h> |
42 | 831b7825 | ths | |
43 | 831b7825 | ths | const char *interp_prefix = ""; |
44 | 831b7825 | ths | |
45 | 831b7825 | ths | asm(".zerofill __STD_PROG_ZONE, __STD_PROG_ZONE, __std_prog_zone, 0x0dfff000"); |
46 | 831b7825 | ths | |
47 | 831b7825 | ths | /* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so
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48 | 831b7825 | ths | we allocate a bigger stack. Need a better solution, for example
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49 | 831b7825 | ths | by remapping the process stack directly at the right place */
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50 | 831b7825 | ths | unsigned long stack_size = 512 * 1024; |
51 | 831b7825 | ths | |
52 | 831b7825 | ths | void qerror(const char *fmt, ...) |
53 | 831b7825 | ths | { |
54 | 831b7825 | ths | va_list ap; |
55 | 831b7825 | ths | |
56 | 831b7825 | ths | va_start(ap, fmt); |
57 | 831b7825 | ths | vfprintf(stderr, fmt, ap); |
58 | 831b7825 | ths | va_end(ap); |
59 | 831b7825 | ths | fprintf(stderr, "\n");
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60 | 831b7825 | ths | exit(1);
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61 | 831b7825 | ths | } |
62 | 831b7825 | ths | |
63 | 831b7825 | ths | void gemu_log(const char *fmt, ...) |
64 | 831b7825 | ths | { |
65 | 831b7825 | ths | va_list ap; |
66 | 831b7825 | ths | |
67 | 831b7825 | ths | va_start(ap, fmt); |
68 | 831b7825 | ths | vfprintf(stderr, fmt, ap); |
69 | 831b7825 | ths | va_end(ap); |
70 | 831b7825 | ths | } |
71 | 831b7825 | ths | |
72 | 831b7825 | ths | void cpu_outb(CPUState *env, int addr, int val) |
73 | 831b7825 | ths | { |
74 | 831b7825 | ths | fprintf(stderr, "outb: port=0x%04x, data=%02x\n", addr, val);
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75 | 831b7825 | ths | } |
76 | 831b7825 | ths | |
77 | 831b7825 | ths | void cpu_outw(CPUState *env, int addr, int val) |
78 | 831b7825 | ths | { |
79 | 831b7825 | ths | fprintf(stderr, "outw: port=0x%04x, data=%04x\n", addr, val);
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80 | 831b7825 | ths | } |
81 | 831b7825 | ths | |
82 | 831b7825 | ths | void cpu_outl(CPUState *env, int addr, int val) |
83 | 831b7825 | ths | { |
84 | 831b7825 | ths | fprintf(stderr, "outl: port=0x%04x, data=%08x\n", addr, val);
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85 | 831b7825 | ths | } |
86 | 831b7825 | ths | |
87 | 831b7825 | ths | int cpu_inb(CPUState *env, int addr) |
88 | 831b7825 | ths | { |
89 | 831b7825 | ths | fprintf(stderr, "inb: port=0x%04x\n", addr);
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90 | 831b7825 | ths | return 0; |
91 | 831b7825 | ths | } |
92 | 831b7825 | ths | |
93 | 831b7825 | ths | int cpu_inw(CPUState *env, int addr) |
94 | 831b7825 | ths | { |
95 | 831b7825 | ths | fprintf(stderr, "inw: port=0x%04x\n", addr);
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96 | 831b7825 | ths | return 0; |
97 | 831b7825 | ths | } |
98 | 831b7825 | ths | |
99 | 831b7825 | ths | int cpu_inl(CPUState *env, int addr) |
100 | 831b7825 | ths | { |
101 | 831b7825 | ths | fprintf(stderr, "inl: port=0x%04x\n", addr);
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102 | 831b7825 | ths | return 0; |
103 | 831b7825 | ths | } |
104 | 831b7825 | ths | |
105 | 831b7825 | ths | int cpu_get_pic_interrupt(CPUState *env)
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106 | 831b7825 | ths | { |
107 | 831b7825 | ths | return -1; |
108 | 831b7825 | ths | } |
109 | 831b7825 | ths | #ifdef TARGET_PPC
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110 | 831b7825 | ths | |
111 | 831b7825 | ths | static inline uint64_t cpu_ppc_get_tb (CPUState *env) |
112 | 831b7825 | ths | { |
113 | 831b7825 | ths | /* TO FIX */
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114 | 831b7825 | ths | return 0; |
115 | 831b7825 | ths | } |
116 | 831b7825 | ths | |
117 | 831b7825 | ths | uint32_t cpu_ppc_load_tbl (CPUState *env) |
118 | 831b7825 | ths | { |
119 | 831b7825 | ths | return cpu_ppc_get_tb(env) & 0xFFFFFFFF; |
120 | 831b7825 | ths | } |
121 | 831b7825 | ths | |
122 | 831b7825 | ths | uint32_t cpu_ppc_load_tbu (CPUState *env) |
123 | 831b7825 | ths | { |
124 | 831b7825 | ths | return cpu_ppc_get_tb(env) >> 32; |
125 | 831b7825 | ths | } |
126 | 831b7825 | ths | |
127 | 831b7825 | ths | static void cpu_ppc_store_tb (CPUState *env, uint64_t value) |
128 | 831b7825 | ths | { |
129 | 831b7825 | ths | /* TO FIX */
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130 | 831b7825 | ths | } |
131 | 831b7825 | ths | |
132 | 831b7825 | ths | void cpu_ppc_store_tbu (CPUState *env, uint32_t value)
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133 | 831b7825 | ths | { |
134 | 831b7825 | ths | cpu_ppc_store_tb(env, ((uint64_t)value << 32) | cpu_ppc_load_tbl(env));
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135 | 831b7825 | ths | } |
136 | 831b7825 | ths | |
137 | 831b7825 | ths | void cpu_ppc_store_tbl (CPUState *env, uint32_t value)
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138 | 831b7825 | ths | { |
139 | 831b7825 | ths | cpu_ppc_store_tb(env, ((uint64_t)cpu_ppc_load_tbl(env) << 32) | value);
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140 | 831b7825 | ths | } |
141 | 831b7825 | ths | |
142 | 831b7825 | ths | uint32_t cpu_ppc_load_decr (CPUState *env) |
143 | 831b7825 | ths | { |
144 | 831b7825 | ths | /* TO FIX */
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145 | 831b7825 | ths | return -1; |
146 | 831b7825 | ths | } |
147 | 831b7825 | ths | |
148 | 831b7825 | ths | void cpu_ppc_store_decr (CPUState *env, uint32_t value)
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149 | 831b7825 | ths | { |
150 | 831b7825 | ths | /* TO FIX */
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151 | 831b7825 | ths | } |
152 | 831b7825 | ths | |
153 | 831b7825 | ths | void cpu_loop(CPUPPCState *env)
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154 | 831b7825 | ths | { |
155 | 831b7825 | ths | int trapnr;
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156 | 831b7825 | ths | uint32_t ret; |
157 | 831b7825 | ths | target_siginfo_t info; |
158 | 831b7825 | ths | |
159 | 831b7825 | ths | for(;;) {
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160 | 831b7825 | ths | trapnr = cpu_ppc_exec(env); |
161 | 831b7825 | ths | if (trapnr != EXCP_SYSCALL_USER && trapnr != EXCP_BRANCH &&
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162 | 831b7825 | ths | trapnr != EXCP_TRACE) { |
163 | 831b7825 | ths | if (loglevel > 0) { |
164 | 831b7825 | ths | cpu_dump_state(env, logfile, fprintf, 0);
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165 | 831b7825 | ths | } |
166 | 831b7825 | ths | } |
167 | 831b7825 | ths | switch(trapnr) {
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168 | 831b7825 | ths | case EXCP_NONE:
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169 | 831b7825 | ths | break;
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170 | 831b7825 | ths | case EXCP_SYSCALL_USER:
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171 | 831b7825 | ths | /* system call */
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172 | 831b7825 | ths | if(((int)env->gpr[0]) <= SYS_MAXSYSCALL && ((int)env->gpr[0])>0) |
173 | 831b7825 | ths | ret = do_unix_syscall(env, env->gpr[0]/*, env->gpr[3], env->gpr[4], |
174 | 831b7825 | ths | env->gpr[5], env->gpr[6], env->gpr[7],
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175 | 831b7825 | ths | env->gpr[8], env->gpr[9], env->gpr[10]*/);
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176 | 831b7825 | ths | else if(((int)env->gpr[0])<0) |
177 | 831b7825 | ths | ret = do_mach_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4], |
178 | 831b7825 | ths | env->gpr[5], env->gpr[6], env->gpr[7], |
179 | 831b7825 | ths | env->gpr[8], env->gpr[9], env->gpr[10]); |
180 | 831b7825 | ths | else
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181 | 831b7825 | ths | ret = do_thread_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4], |
182 | 831b7825 | ths | env->gpr[5], env->gpr[6], env->gpr[7], |
183 | 831b7825 | ths | env->gpr[8], env->gpr[9], env->gpr[10]); |
184 | 831b7825 | ths | |
185 | 831b7825 | ths | /* Unix syscall error signaling */
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186 | 831b7825 | ths | if(((int)env->gpr[0]) <= SYS_MAXSYSCALL && ((int)env->gpr[0])>0) |
187 | 831b7825 | ths | { |
188 | 831b7825 | ths | if( (int)ret < 0 ) |
189 | 831b7825 | ths | env->nip += 0;
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190 | 831b7825 | ths | else
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191 | 831b7825 | ths | env->nip += 4;
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192 | 831b7825 | ths | } |
193 | 831b7825 | ths | |
194 | 831b7825 | ths | /* Return value */
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195 | 831b7825 | ths | env->gpr[3] = ret;
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196 | 831b7825 | ths | break;
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197 | 831b7825 | ths | case EXCP_RESET:
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198 | 831b7825 | ths | /* Should not happen ! */
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199 | 831b7825 | ths | fprintf(stderr, "RESET asked... Stop emulation\n");
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200 | 831b7825 | ths | if (loglevel)
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201 | 831b7825 | ths | fprintf(logfile, "RESET asked... Stop emulation\n");
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202 | 831b7825 | ths | abort(); |
203 | 831b7825 | ths | case EXCP_MACHINE_CHECK:
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204 | 831b7825 | ths | fprintf(stderr, "Machine check exeption... Stop emulation\n");
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205 | 831b7825 | ths | if (loglevel)
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206 | 831b7825 | ths | fprintf(logfile, "RESET asked... Stop emulation\n");
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207 | 831b7825 | ths | info.si_signo = SIGBUS; |
208 | 831b7825 | ths | info.si_errno = 0;
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209 | 831b7825 | ths | info.si_code = BUS_OBJERR; |
210 | 831b7825 | ths | info.si_addr = (void*)(env->nip - 4); |
211 | 831b7825 | ths | queue_signal(info.si_signo, &info); |
212 | 831b7825 | ths | case EXCP_DSI:
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213 | 831b7825 | ths | #ifndef DAR
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214 | 831b7825 | ths | /* To deal with multiple qemu header version as host for the darwin-user code */
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215 | 831b7825 | ths | # define DAR SPR_DAR
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216 | 831b7825 | ths | #endif
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217 | 831b7825 | ths | fprintf(stderr, "Invalid data memory access: 0x%08x\n", env->spr[DAR]);
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218 | 831b7825 | ths | if (loglevel) {
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219 | 831b7825 | ths | fprintf(logfile, "Invalid data memory access: 0x%08x\n",
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220 | 831b7825 | ths | env->spr[DAR]); |
221 | 831b7825 | ths | } |
222 | 831b7825 | ths | /* Handle this via the gdb */
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223 | 831b7825 | ths | gdb_handlesig (env, SIGSEGV); |
224 | 831b7825 | ths | |
225 | 831b7825 | ths | info.si_addr = (void*)env->nip;
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226 | 831b7825 | ths | queue_signal(info.si_signo, &info); |
227 | 831b7825 | ths | break;
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228 | 831b7825 | ths | case EXCP_ISI:
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229 | 831b7825 | ths | fprintf(stderr, "Invalid instruction fetch\n");
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230 | 831b7825 | ths | if (loglevel)
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231 | 831b7825 | ths | fprintf(logfile, "Invalid instruction fetch\n");
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232 | 831b7825 | ths | /* Handle this via the gdb */
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233 | 831b7825 | ths | gdb_handlesig (env, SIGSEGV); |
234 | 831b7825 | ths | |
235 | 831b7825 | ths | info.si_addr = (void*)(env->nip - 4); |
236 | 831b7825 | ths | queue_signal(info.si_signo, &info); |
237 | 831b7825 | ths | break;
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238 | 831b7825 | ths | case EXCP_EXTERNAL:
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239 | 831b7825 | ths | /* Should not happen ! */
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240 | 831b7825 | ths | fprintf(stderr, "External interruption... Stop emulation\n");
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241 | 831b7825 | ths | if (loglevel)
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242 | 831b7825 | ths | fprintf(logfile, "External interruption... Stop emulation\n");
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243 | 831b7825 | ths | abort(); |
244 | 831b7825 | ths | case EXCP_ALIGN:
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245 | 831b7825 | ths | fprintf(stderr, "Invalid unaligned memory access\n");
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246 | 831b7825 | ths | if (loglevel)
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247 | 831b7825 | ths | fprintf(logfile, "Invalid unaligned memory access\n");
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248 | 831b7825 | ths | info.si_signo = SIGBUS; |
249 | 831b7825 | ths | info.si_errno = 0;
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250 | 831b7825 | ths | info.si_code = BUS_ADRALN; |
251 | 831b7825 | ths | info.si_addr = (void*)(env->nip - 4); |
252 | 831b7825 | ths | queue_signal(info.si_signo, &info); |
253 | 831b7825 | ths | break;
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254 | 831b7825 | ths | case EXCP_PROGRAM:
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255 | 831b7825 | ths | switch (env->error_code & ~0xF) { |
256 | 831b7825 | ths | case EXCP_FP:
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257 | 831b7825 | ths | fprintf(stderr, "Program exception\n");
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258 | 831b7825 | ths | if (loglevel)
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259 | 831b7825 | ths | fprintf(logfile, "Program exception\n");
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260 | 831b7825 | ths | /* Set FX */
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261 | 831b7825 | ths | env->fpscr[7] |= 0x8; |
262 | 831b7825 | ths | /* Finally, update FEX */
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263 | 831b7825 | ths | if ((((env->fpscr[7] & 0x3) << 3) | (env->fpscr[6] >> 1)) & |
264 | 831b7825 | ths | ((env->fpscr[1] << 1) | (env->fpscr[0] >> 3))) |
265 | 831b7825 | ths | env->fpscr[7] |= 0x4; |
266 | 831b7825 | ths | info.si_signo = SIGFPE; |
267 | 831b7825 | ths | info.si_errno = 0;
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268 | 831b7825 | ths | switch (env->error_code & 0xF) { |
269 | 831b7825 | ths | case EXCP_FP_OX:
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270 | 831b7825 | ths | info.si_code = FPE_FLTOVF; |
271 | 831b7825 | ths | break;
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272 | 831b7825 | ths | case EXCP_FP_UX:
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273 | 831b7825 | ths | info.si_code = FPE_FLTUND; |
274 | 831b7825 | ths | break;
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275 | 831b7825 | ths | case EXCP_FP_ZX:
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276 | 831b7825 | ths | case EXCP_FP_VXZDZ:
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277 | 831b7825 | ths | info.si_code = FPE_FLTDIV; |
278 | 831b7825 | ths | break;
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279 | 831b7825 | ths | case EXCP_FP_XX:
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280 | 831b7825 | ths | info.si_code = FPE_FLTRES; |
281 | 831b7825 | ths | break;
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282 | 831b7825 | ths | case EXCP_FP_VXSOFT:
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283 | 831b7825 | ths | info.si_code = FPE_FLTINV; |
284 | 831b7825 | ths | break;
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285 | 831b7825 | ths | case EXCP_FP_VXNAN:
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286 | 831b7825 | ths | case EXCP_FP_VXISI:
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287 | 831b7825 | ths | case EXCP_FP_VXIDI:
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288 | 831b7825 | ths | case EXCP_FP_VXIMZ:
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289 | 831b7825 | ths | case EXCP_FP_VXVC:
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290 | 831b7825 | ths | case EXCP_FP_VXSQRT:
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291 | 831b7825 | ths | case EXCP_FP_VXCVI:
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292 | 831b7825 | ths | info.si_code = FPE_FLTSUB; |
293 | 831b7825 | ths | break;
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294 | 831b7825 | ths | default:
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295 | 831b7825 | ths | fprintf(stderr, "Unknown floating point exception "
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296 | 831b7825 | ths | "(%02x)\n", env->error_code);
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297 | 831b7825 | ths | if (loglevel) {
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298 | 831b7825 | ths | fprintf(logfile, "Unknown floating point exception "
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299 | 831b7825 | ths | "(%02x)\n", env->error_code & 0xF); |
300 | 831b7825 | ths | } |
301 | 831b7825 | ths | } |
302 | 831b7825 | ths | break;
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303 | 831b7825 | ths | case EXCP_INVAL:
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304 | 831b7825 | ths | fprintf(stderr, "Invalid instruction\n");
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305 | 831b7825 | ths | if (loglevel)
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306 | 831b7825 | ths | fprintf(logfile, "Invalid instruction\n");
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307 | 831b7825 | ths | info.si_signo = SIGILL; |
308 | 831b7825 | ths | info.si_errno = 0;
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309 | 831b7825 | ths | switch (env->error_code & 0xF) { |
310 | 831b7825 | ths | case EXCP_INVAL_INVAL:
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311 | 831b7825 | ths | info.si_code = ILL_ILLOPC; |
312 | 831b7825 | ths | break;
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313 | 831b7825 | ths | case EXCP_INVAL_LSWX:
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314 | 831b7825 | ths | info.si_code = ILL_ILLOPN; |
315 | 831b7825 | ths | break;
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316 | 831b7825 | ths | case EXCP_INVAL_SPR:
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317 | 831b7825 | ths | info.si_code = ILL_PRVREG; |
318 | 831b7825 | ths | break;
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319 | 831b7825 | ths | case EXCP_INVAL_FP:
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320 | 831b7825 | ths | info.si_code = ILL_COPROC; |
321 | 831b7825 | ths | break;
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322 | 831b7825 | ths | default:
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323 | 831b7825 | ths | fprintf(stderr, "Unknown invalid operation (%02x)\n",
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324 | 831b7825 | ths | env->error_code & 0xF);
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325 | 831b7825 | ths | if (loglevel) {
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326 | 831b7825 | ths | fprintf(logfile, "Unknown invalid operation (%02x)\n",
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327 | 831b7825 | ths | env->error_code & 0xF);
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328 | 831b7825 | ths | } |
329 | 831b7825 | ths | info.si_code = ILL_ILLADR; |
330 | 831b7825 | ths | break;
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331 | 831b7825 | ths | } |
332 | 831b7825 | ths | /* Handle this via the gdb */
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333 | 831b7825 | ths | gdb_handlesig (env, SIGSEGV); |
334 | 831b7825 | ths | break;
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335 | 831b7825 | ths | case EXCP_PRIV:
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336 | 831b7825 | ths | fprintf(stderr, "Privilege violation\n");
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337 | 831b7825 | ths | if (loglevel)
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338 | 831b7825 | ths | fprintf(logfile, "Privilege violation\n");
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339 | 831b7825 | ths | info.si_signo = SIGILL; |
340 | 831b7825 | ths | info.si_errno = 0;
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341 | 831b7825 | ths | switch (env->error_code & 0xF) { |
342 | 831b7825 | ths | case EXCP_PRIV_OPC:
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343 | 831b7825 | ths | info.si_code = ILL_PRVOPC; |
344 | 831b7825 | ths | break;
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345 | 831b7825 | ths | case EXCP_PRIV_REG:
|
346 | 831b7825 | ths | info.si_code = ILL_PRVREG; |
347 | 831b7825 | ths | break;
|
348 | 831b7825 | ths | default:
|
349 | 831b7825 | ths | fprintf(stderr, "Unknown privilege violation (%02x)\n",
|
350 | 831b7825 | ths | env->error_code & 0xF);
|
351 | 831b7825 | ths | info.si_code = ILL_PRVOPC; |
352 | 831b7825 | ths | break;
|
353 | 831b7825 | ths | } |
354 | 831b7825 | ths | break;
|
355 | 831b7825 | ths | case EXCP_TRAP:
|
356 | 831b7825 | ths | fprintf(stderr, "Tried to call a TRAP\n");
|
357 | 831b7825 | ths | if (loglevel)
|
358 | 831b7825 | ths | fprintf(logfile, "Tried to call a TRAP\n");
|
359 | 831b7825 | ths | abort(); |
360 | 831b7825 | ths | default:
|
361 | 831b7825 | ths | /* Should not happen ! */
|
362 | 831b7825 | ths | fprintf(stderr, "Unknown program exception (%02x)\n",
|
363 | 831b7825 | ths | env->error_code); |
364 | 831b7825 | ths | if (loglevel) {
|
365 | 831b7825 | ths | fprintf(logfile, "Unknwon program exception (%02x)\n",
|
366 | 831b7825 | ths | env->error_code); |
367 | 831b7825 | ths | } |
368 | 831b7825 | ths | abort(); |
369 | 831b7825 | ths | } |
370 | 831b7825 | ths | info.si_addr = (void*)(env->nip - 4); |
371 | 831b7825 | ths | queue_signal(info.si_signo, &info); |
372 | 831b7825 | ths | break;
|
373 | 831b7825 | ths | case EXCP_NO_FP:
|
374 | 831b7825 | ths | fprintf(stderr, "No floating point allowed\n");
|
375 | 831b7825 | ths | if (loglevel)
|
376 | 831b7825 | ths | fprintf(logfile, "No floating point allowed\n");
|
377 | 831b7825 | ths | info.si_signo = SIGILL; |
378 | 831b7825 | ths | info.si_errno = 0;
|
379 | 831b7825 | ths | info.si_code = ILL_COPROC; |
380 | 831b7825 | ths | info.si_addr = (void*)(env->nip - 4); |
381 | 831b7825 | ths | queue_signal(info.si_signo, &info); |
382 | 831b7825 | ths | break;
|
383 | 831b7825 | ths | case EXCP_DECR:
|
384 | 831b7825 | ths | /* Should not happen ! */
|
385 | 831b7825 | ths | fprintf(stderr, "Decrementer exception\n");
|
386 | 831b7825 | ths | if (loglevel)
|
387 | 831b7825 | ths | fprintf(logfile, "Decrementer exception\n");
|
388 | 831b7825 | ths | abort(); |
389 | 831b7825 | ths | case EXCP_TRACE:
|
390 | 831b7825 | ths | /* Pass to gdb: we use this to trace execution */
|
391 | 831b7825 | ths | gdb_handlesig (env, SIGTRAP); |
392 | 831b7825 | ths | break;
|
393 | 831b7825 | ths | case EXCP_FP_ASSIST:
|
394 | 831b7825 | ths | /* Should not happen ! */
|
395 | 831b7825 | ths | fprintf(stderr, "Floating point assist exception\n");
|
396 | 831b7825 | ths | if (loglevel)
|
397 | 831b7825 | ths | fprintf(logfile, "Floating point assist exception\n");
|
398 | 831b7825 | ths | abort(); |
399 | 831b7825 | ths | case EXCP_MTMSR:
|
400 | 831b7825 | ths | /* We reloaded the msr, just go on */
|
401 | 831b7825 | ths | if (msr_pr == 0) { |
402 | 831b7825 | ths | fprintf(stderr, "Tried to go into supervisor mode !\n");
|
403 | 831b7825 | ths | if (loglevel)
|
404 | 831b7825 | ths | fprintf(logfile, "Tried to go into supervisor mode !\n");
|
405 | 831b7825 | ths | abort(); |
406 | 831b7825 | ths | } |
407 | 831b7825 | ths | break;
|
408 | 831b7825 | ths | case EXCP_BRANCH:
|
409 | 831b7825 | ths | /* We stopped because of a jump... */
|
410 | 831b7825 | ths | break;
|
411 | 831b7825 | ths | case EXCP_INTERRUPT:
|
412 | 831b7825 | ths | /* Don't know why this should ever happen... */
|
413 | 831b7825 | ths | fprintf(stderr, "EXCP_INTERRUPT\n");
|
414 | 831b7825 | ths | break;
|
415 | 831b7825 | ths | case EXCP_DEBUG:
|
416 | 831b7825 | ths | gdb_handlesig (env, SIGTRAP); |
417 | 831b7825 | ths | break;
|
418 | 831b7825 | ths | default:
|
419 | 831b7825 | ths | fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
|
420 | 831b7825 | ths | trapnr); |
421 | 831b7825 | ths | if (loglevel) {
|
422 | 831b7825 | ths | fprintf(logfile, "qemu: unhandled CPU exception 0x%02x - "
|
423 | 831b7825 | ths | "0x%02x - aborting\n", trapnr, env->error_code);
|
424 | 831b7825 | ths | } |
425 | 831b7825 | ths | abort(); |
426 | 831b7825 | ths | } |
427 | 831b7825 | ths | process_pending_signals(env); |
428 | 831b7825 | ths | } |
429 | 831b7825 | ths | } |
430 | 831b7825 | ths | #endif
|
431 | 831b7825 | ths | |
432 | 831b7825 | ths | |
433 | 831b7825 | ths | #ifdef TARGET_I386
|
434 | 831b7825 | ths | |
435 | 831b7825 | ths | /***********************************************************/
|
436 | 831b7825 | ths | /* CPUX86 core interface */
|
437 | 831b7825 | ths | |
438 | 831b7825 | ths | uint64_t cpu_get_tsc(CPUX86State *env) |
439 | 831b7825 | ths | { |
440 | 831b7825 | ths | return cpu_get_real_ticks();
|
441 | 831b7825 | ths | } |
442 | 831b7825 | ths | |
443 | 831b7825 | ths | void
|
444 | 831b7825 | ths | write_dt(void *ptr, unsigned long addr, unsigned long limit, |
445 | 831b7825 | ths | int flags)
|
446 | 831b7825 | ths | { |
447 | 831b7825 | ths | unsigned int e1, e2; |
448 | 831b7825 | ths | e1 = (addr << 16) | (limit & 0xffff); |
449 | 831b7825 | ths | e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000); |
450 | 831b7825 | ths | e2 |= flags; |
451 | 831b7825 | ths | stl((uint8_t *)ptr, e1); |
452 | 831b7825 | ths | stl((uint8_t *)ptr + 4, e2);
|
453 | 831b7825 | ths | } |
454 | 831b7825 | ths | |
455 | 831b7825 | ths | static void set_gate(void *ptr, unsigned int type, unsigned int dpl, |
456 | 831b7825 | ths | unsigned long addr, unsigned int sel) |
457 | 831b7825 | ths | { |
458 | 831b7825 | ths | unsigned int e1, e2; |
459 | 831b7825 | ths | e1 = (addr & 0xffff) | (sel << 16); |
460 | 831b7825 | ths | e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8); |
461 | 831b7825 | ths | stl((uint8_t *)ptr, e1); |
462 | 831b7825 | ths | stl((uint8_t *)ptr + 4, e2);
|
463 | 831b7825 | ths | } |
464 | 831b7825 | ths | |
465 | 831b7825 | ths | #define GDT_TABLE_SIZE 14 |
466 | 831b7825 | ths | #define LDT_TABLE_SIZE 15 |
467 | 831b7825 | ths | #define IDT_TABLE_SIZE 256 |
468 | 831b7825 | ths | #define TSS_SIZE 104 |
469 | 831b7825 | ths | uint64_t gdt_table[GDT_TABLE_SIZE]; |
470 | 831b7825 | ths | uint64_t ldt_table[LDT_TABLE_SIZE]; |
471 | 831b7825 | ths | uint64_t idt_table[IDT_TABLE_SIZE]; |
472 | 831b7825 | ths | uint32_t tss[TSS_SIZE]; |
473 | 831b7825 | ths | |
474 | 831b7825 | ths | /* only dpl matters as we do only user space emulation */
|
475 | 831b7825 | ths | static void set_idt(int n, unsigned int dpl) |
476 | 831b7825 | ths | { |
477 | 831b7825 | ths | set_gate(idt_table + n, 0, dpl, 0, 0); |
478 | 831b7825 | ths | } |
479 | 831b7825 | ths | |
480 | 831b7825 | ths | /* ABI convention: after a syscall if there was an error the CF flag is set */
|
481 | 46ea3397 | ths | static inline void set_error(CPUX86State *env, int ret) |
482 | 831b7825 | ths | { |
483 | 831b7825 | ths | if(ret<0) |
484 | 831b7825 | ths | env->eflags = env->eflags | 0x1;
|
485 | 831b7825 | ths | else
|
486 | 831b7825 | ths | env->eflags &= ~0x1;
|
487 | 831b7825 | ths | env->regs[R_EAX] = ret; |
488 | 831b7825 | ths | } |
489 | 831b7825 | ths | |
490 | 831b7825 | ths | void cpu_loop(CPUX86State *env)
|
491 | 831b7825 | ths | { |
492 | 831b7825 | ths | int trapnr;
|
493 | 831b7825 | ths | int ret;
|
494 | 831b7825 | ths | uint8_t *pc; |
495 | 831b7825 | ths | target_siginfo_t info; |
496 | 831b7825 | ths | |
497 | 831b7825 | ths | for(;;) {
|
498 | 831b7825 | ths | trapnr = cpu_x86_exec(env); |
499 | 831b7825 | ths | uint32_t *params = (uint32_t *)env->regs[R_ESP]; |
500 | 831b7825 | ths | switch(trapnr) {
|
501 | 831b7825 | ths | case 0x79: /* Our commpage hack back door exit is here */ |
502 | 831b7825 | ths | do_commpage(env, env->eip, *(params + 1), *(params + 2), |
503 | 831b7825 | ths | *(params + 3), *(params + 4), |
504 | 831b7825 | ths | *(params + 5), *(params + 6), |
505 | 831b7825 | ths | *(params + 7), *(params + 8)); |
506 | 831b7825 | ths | break;
|
507 | 831b7825 | ths | case 0x81: /* mach syscall */ |
508 | 831b7825 | ths | { |
509 | 831b7825 | ths | ret = do_mach_syscall(env, env->regs[R_EAX], |
510 | 831b7825 | ths | *(params + 1), *(params + 2), |
511 | 831b7825 | ths | *(params + 3), *(params + 4), |
512 | 831b7825 | ths | *(params + 5), *(params + 6), |
513 | 831b7825 | ths | *(params + 7), *(params + 8)); |
514 | 831b7825 | ths | set_error(env, ret); |
515 | 831b7825 | ths | break;
|
516 | 831b7825 | ths | } |
517 | 831b7825 | ths | case 0x90: /* unix backdoor */ |
518 | 831b7825 | ths | { |
519 | 831b7825 | ths | /* after sysenter, stack is in R_ECX, new eip in R_EDX (sysexit will flip them back)*/
|
520 | 831b7825 | ths | int saved_stack = env->regs[R_ESP];
|
521 | 831b7825 | ths | env->regs[R_ESP] = env->regs[R_ECX]; |
522 | 831b7825 | ths | |
523 | 831b7825 | ths | ret = do_unix_syscall(env, env->regs[R_EAX]); |
524 | 831b7825 | ths | |
525 | 831b7825 | ths | env->regs[R_ECX] = env->regs[R_ESP]; |
526 | 831b7825 | ths | env->regs[R_ESP] = saved_stack; |
527 | 831b7825 | ths | |
528 | 831b7825 | ths | set_error(env, ret); |
529 | 831b7825 | ths | break;
|
530 | 831b7825 | ths | } |
531 | 831b7825 | ths | case 0x80: /* unix syscall */ |
532 | 831b7825 | ths | { |
533 | 831b7825 | ths | ret = do_unix_syscall(env, env->regs[R_EAX]/*,
|
534 | 831b7825 | ths | *(params + 1), *(params + 2),
|
535 | 831b7825 | ths | *(params + 3), *(params + 4),
|
536 | 831b7825 | ths | *(params + 5), *(params + 6),
|
537 | 831b7825 | ths | *(params + 7), *(params + 8)*/);
|
538 | 831b7825 | ths | set_error(env, ret); |
539 | 831b7825 | ths | break;
|
540 | 831b7825 | ths | } |
541 | 831b7825 | ths | case 0x82: /* thread syscall */ |
542 | 831b7825 | ths | { |
543 | 831b7825 | ths | ret = do_thread_syscall(env, env->regs[R_EAX], |
544 | 831b7825 | ths | *(params + 1), *(params + 2), |
545 | 831b7825 | ths | *(params + 3), *(params + 4), |
546 | 831b7825 | ths | *(params + 5), *(params + 6), |
547 | 831b7825 | ths | *(params + 7), *(params + 8)); |
548 | 831b7825 | ths | set_error(env, ret); |
549 | 831b7825 | ths | break;
|
550 | 831b7825 | ths | } |
551 | 831b7825 | ths | case EXCP0B_NOSEG:
|
552 | 831b7825 | ths | case EXCP0C_STACK:
|
553 | 831b7825 | ths | info.si_signo = SIGBUS; |
554 | 831b7825 | ths | info.si_errno = 0;
|
555 | 831b7825 | ths | info.si_code = BUS_NOOP; |
556 | 831b7825 | ths | info.si_addr = 0;
|
557 | 831b7825 | ths | gdb_handlesig (env, SIGBUS); |
558 | 831b7825 | ths | queue_signal(info.si_signo, &info); |
559 | 831b7825 | ths | break;
|
560 | 831b7825 | ths | case EXCP0D_GPF:
|
561 | 831b7825 | ths | info.si_signo = SIGSEGV; |
562 | 831b7825 | ths | info.si_errno = 0;
|
563 | 831b7825 | ths | info.si_code = SEGV_NOOP; |
564 | 831b7825 | ths | info.si_addr = 0;
|
565 | 831b7825 | ths | gdb_handlesig (env, SIGSEGV); |
566 | 831b7825 | ths | queue_signal(info.si_signo, &info); |
567 | 831b7825 | ths | break;
|
568 | 831b7825 | ths | case EXCP0E_PAGE:
|
569 | 831b7825 | ths | info.si_signo = SIGSEGV; |
570 | 831b7825 | ths | info.si_errno = 0;
|
571 | 831b7825 | ths | if (!(env->error_code & 1)) |
572 | 831b7825 | ths | info.si_code = SEGV_MAPERR; |
573 | 831b7825 | ths | else
|
574 | 831b7825 | ths | info.si_code = SEGV_ACCERR; |
575 | 831b7825 | ths | info.si_addr = (void*)env->cr[2]; |
576 | 831b7825 | ths | gdb_handlesig (env, SIGSEGV); |
577 | 831b7825 | ths | queue_signal(info.si_signo, &info); |
578 | 831b7825 | ths | break;
|
579 | 831b7825 | ths | case EXCP00_DIVZ:
|
580 | 831b7825 | ths | /* division by zero */
|
581 | 831b7825 | ths | info.si_signo = SIGFPE; |
582 | 831b7825 | ths | info.si_errno = 0;
|
583 | 831b7825 | ths | info.si_code = FPE_INTDIV; |
584 | 831b7825 | ths | info.si_addr = (void*)env->eip;
|
585 | 831b7825 | ths | gdb_handlesig (env, SIGFPE); |
586 | 831b7825 | ths | queue_signal(info.si_signo, &info); |
587 | 831b7825 | ths | break;
|
588 | 831b7825 | ths | case EXCP01_SSTP:
|
589 | 831b7825 | ths | case EXCP03_INT3:
|
590 | 831b7825 | ths | info.si_signo = SIGTRAP; |
591 | 831b7825 | ths | info.si_errno = 0;
|
592 | 831b7825 | ths | info.si_code = TRAP_BRKPT; |
593 | 831b7825 | ths | info.si_addr = (void*)env->eip;
|
594 | 831b7825 | ths | gdb_handlesig (env, SIGTRAP); |
595 | 831b7825 | ths | queue_signal(info.si_signo, &info); |
596 | 831b7825 | ths | break;
|
597 | 831b7825 | ths | case EXCP04_INTO:
|
598 | 831b7825 | ths | case EXCP05_BOUND:
|
599 | 831b7825 | ths | info.si_signo = SIGSEGV; |
600 | 831b7825 | ths | info.si_errno = 0;
|
601 | 831b7825 | ths | info.si_code = SEGV_NOOP; |
602 | 831b7825 | ths | info.si_addr = 0;
|
603 | 831b7825 | ths | gdb_handlesig (env, SIGSEGV); |
604 | 831b7825 | ths | queue_signal(info.si_signo, &info); |
605 | 831b7825 | ths | break;
|
606 | 831b7825 | ths | case EXCP06_ILLOP:
|
607 | 831b7825 | ths | info.si_signo = SIGILL; |
608 | 831b7825 | ths | info.si_errno = 0;
|
609 | 831b7825 | ths | info.si_code = ILL_ILLOPN; |
610 | 831b7825 | ths | info.si_addr = (void*)env->eip;
|
611 | 831b7825 | ths | gdb_handlesig (env, SIGILL); |
612 | 831b7825 | ths | queue_signal(info.si_signo, &info); |
613 | 831b7825 | ths | break;
|
614 | 831b7825 | ths | case EXCP_INTERRUPT:
|
615 | 831b7825 | ths | /* just indicate that signals should be handled asap */
|
616 | 831b7825 | ths | break;
|
617 | 831b7825 | ths | case EXCP_DEBUG:
|
618 | 831b7825 | ths | { |
619 | 831b7825 | ths | int sig;
|
620 | 831b7825 | ths | |
621 | 831b7825 | ths | sig = gdb_handlesig (env, SIGTRAP); |
622 | 831b7825 | ths | if (sig)
|
623 | 831b7825 | ths | { |
624 | 831b7825 | ths | info.si_signo = sig; |
625 | 831b7825 | ths | info.si_errno = 0;
|
626 | 831b7825 | ths | info.si_code = TRAP_BRKPT; |
627 | 831b7825 | ths | queue_signal(info.si_signo, &info); |
628 | 831b7825 | ths | } |
629 | 831b7825 | ths | } |
630 | 831b7825 | ths | break;
|
631 | 831b7825 | ths | default:
|
632 | 831b7825 | ths | pc = (void*)(env->segs[R_CS].base + env->eip);
|
633 | 831b7825 | ths | fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n",
|
634 | 831b7825 | ths | (long)pc, trapnr);
|
635 | 831b7825 | ths | abort(); |
636 | 831b7825 | ths | } |
637 | 831b7825 | ths | process_pending_signals(env); |
638 | 831b7825 | ths | } |
639 | 831b7825 | ths | } |
640 | 831b7825 | ths | #endif
|
641 | 831b7825 | ths | |
642 | 831b7825 | ths | void usage(void) |
643 | 831b7825 | ths | { |
644 | 831b7825 | ths | printf("qemu-" TARGET_ARCH " version " QEMU_VERSION ", Copyright (c) 2003-2004 Fabrice Bellard\n" |
645 | 831b7825 | ths | "usage: qemu-" TARGET_ARCH " [-h] [-d opts] [-L path] [-s size] program [arguments...]\n" |
646 | 831b7825 | ths | "Darwin CPU emulator (compiled for %s emulation)\n"
|
647 | 831b7825 | ths | "\n"
|
648 | 831b7825 | ths | "-h print this help\n"
|
649 | 1e2bed4f | bellard | "-L path set the %s library path (default='%s')\n"
|
650 | 831b7825 | ths | "-s size set the stack size in bytes (default=%ld)\n"
|
651 | 831b7825 | ths | "\n"
|
652 | 831b7825 | ths | "debug options:\n"
|
653 | 831b7825 | ths | #ifdef USE_CODE_COPY
|
654 | 831b7825 | ths | "-no-code-copy disable code copy acceleration\n"
|
655 | 831b7825 | ths | #endif
|
656 | 1e2bed4f | bellard | "-d options activate log (logfile='%s')\n"
|
657 | 831b7825 | ths | "-g wait for gdb on port 1234\n"
|
658 | 831b7825 | ths | "-p pagesize set the host page size to 'pagesize'\n",
|
659 | 831b7825 | ths | TARGET_ARCH, |
660 | 1e2bed4f | bellard | TARGET_ARCH, |
661 | 831b7825 | ths | interp_prefix, |
662 | 831b7825 | ths | stack_size, |
663 | 831b7825 | ths | DEBUG_LOGFILE); |
664 | 831b7825 | ths | _exit(1);
|
665 | 831b7825 | ths | } |
666 | 831b7825 | ths | |
667 | 831b7825 | ths | /* XXX: currently only used for async signals (see signal.c) */
|
668 | 831b7825 | ths | CPUState *global_env; |
669 | 831b7825 | ths | /* used only if single thread */
|
670 | 831b7825 | ths | CPUState *cpu_single_env = NULL;
|
671 | 831b7825 | ths | |
672 | 831b7825 | ths | /* used to free thread contexts */
|
673 | 831b7825 | ths | TaskState *first_task_state; |
674 | 831b7825 | ths | |
675 | 831b7825 | ths | int main(int argc, char **argv) |
676 | 831b7825 | ths | { |
677 | 831b7825 | ths | const char *filename; |
678 | 831b7825 | ths | struct target_pt_regs regs1, *regs = ®s1;
|
679 | 831b7825 | ths | TaskState ts1, *ts = &ts1; |
680 | 831b7825 | ths | CPUState *env; |
681 | 831b7825 | ths | int optind;
|
682 | 831b7825 | ths | short use_gdbstub = 0; |
683 | 831b7825 | ths | const char *r; |
684 | 831b7825 | ths | |
685 | 831b7825 | ths | if (argc <= 1) |
686 | 831b7825 | ths | usage(); |
687 | 831b7825 | ths | |
688 | 831b7825 | ths | /* init debug */
|
689 | 831b7825 | ths | cpu_set_log_filename(DEBUG_LOGFILE); |
690 | 831b7825 | ths | |
691 | 831b7825 | ths | optind = 1;
|
692 | 831b7825 | ths | for(;;) {
|
693 | 831b7825 | ths | if (optind >= argc)
|
694 | 831b7825 | ths | break;
|
695 | 831b7825 | ths | r = argv[optind]; |
696 | 831b7825 | ths | if (r[0] != '-') |
697 | 831b7825 | ths | break;
|
698 | 831b7825 | ths | optind++; |
699 | 831b7825 | ths | r++; |
700 | 831b7825 | ths | if (!strcmp(r, "-")) { |
701 | 831b7825 | ths | break;
|
702 | 831b7825 | ths | } else if (!strcmp(r, "d")) { |
703 | 831b7825 | ths | int mask;
|
704 | 831b7825 | ths | CPULogItem *item; |
705 | 831b7825 | ths | |
706 | 831b7825 | ths | if (optind >= argc)
|
707 | 831b7825 | ths | break;
|
708 | 831b7825 | ths | |
709 | 831b7825 | ths | r = argv[optind++]; |
710 | 831b7825 | ths | mask = cpu_str_to_log_mask(r); |
711 | 831b7825 | ths | if (!mask) {
|
712 | 831b7825 | ths | printf("Log items (comma separated):\n");
|
713 | 831b7825 | ths | for(item = cpu_log_items; item->mask != 0; item++) { |
714 | 831b7825 | ths | printf("%-10s %s\n", item->name, item->help);
|
715 | 831b7825 | ths | } |
716 | 831b7825 | ths | exit(1);
|
717 | 831b7825 | ths | } |
718 | 831b7825 | ths | cpu_set_log(mask); |
719 | 831b7825 | ths | } else if (!strcmp(r, "s")) { |
720 | 831b7825 | ths | r = argv[optind++]; |
721 | 831b7825 | ths | stack_size = strtol(r, (char **)&r, 0); |
722 | 831b7825 | ths | if (stack_size <= 0) |
723 | 831b7825 | ths | usage(); |
724 | 831b7825 | ths | if (*r == 'M') |
725 | 831b7825 | ths | stack_size *= 1024 * 1024; |
726 | 831b7825 | ths | else if (*r == 'k' || *r == 'K') |
727 | 831b7825 | ths | stack_size *= 1024;
|
728 | 831b7825 | ths | } else if (!strcmp(r, "L")) { |
729 | 831b7825 | ths | interp_prefix = argv[optind++]; |
730 | 831b7825 | ths | } else if (!strcmp(r, "p")) { |
731 | 831b7825 | ths | qemu_host_page_size = atoi(argv[optind++]); |
732 | 831b7825 | ths | if (qemu_host_page_size == 0 || |
733 | 831b7825 | ths | (qemu_host_page_size & (qemu_host_page_size - 1)) != 0) { |
734 | 831b7825 | ths | fprintf(stderr, "page size must be a power of two\n");
|
735 | 831b7825 | ths | exit(1);
|
736 | 831b7825 | ths | } |
737 | 831b7825 | ths | } else
|
738 | 831b7825 | ths | if (!strcmp(r, "g")) { |
739 | 831b7825 | ths | use_gdbstub = 1;
|
740 | 831b7825 | ths | } else
|
741 | 831b7825 | ths | #ifdef USE_CODE_COPY
|
742 | 831b7825 | ths | if (!strcmp(r, "no-code-copy")) { |
743 | 831b7825 | ths | code_copy_enabled = 0;
|
744 | 831b7825 | ths | } else
|
745 | 831b7825 | ths | #endif
|
746 | 831b7825 | ths | { |
747 | 831b7825 | ths | usage(); |
748 | 831b7825 | ths | } |
749 | 831b7825 | ths | } |
750 | 831b7825 | ths | if (optind >= argc)
|
751 | 831b7825 | ths | usage(); |
752 | 831b7825 | ths | filename = argv[optind]; |
753 | 831b7825 | ths | |
754 | 831b7825 | ths | /* Zero out regs */
|
755 | 831b7825 | ths | memset(regs, 0, sizeof(struct target_pt_regs)); |
756 | 831b7825 | ths | |
757 | 831b7825 | ths | /* NOTE: we need to init the CPU at this stage to get
|
758 | 831b7825 | ths | qemu_host_page_size */
|
759 | 831b7825 | ths | env = cpu_init(); |
760 | 831b7825 | ths | |
761 | 831b7825 | ths | printf("Starting %s with qemu\n----------------\n", filename);
|
762 | 831b7825 | ths | |
763 | 831b7825 | ths | commpage_init(); |
764 | 831b7825 | ths | |
765 | 831b7825 | ths | if (mach_exec(filename, argv+optind, environ, regs) != 0) { |
766 | 831b7825 | ths | printf("Error loading %s\n", filename);
|
767 | 831b7825 | ths | _exit(1);
|
768 | 831b7825 | ths | } |
769 | 831b7825 | ths | |
770 | 831b7825 | ths | syscall_init(); |
771 | 831b7825 | ths | signal_init(); |
772 | 831b7825 | ths | global_env = env; |
773 | 831b7825 | ths | |
774 | 831b7825 | ths | /* build Task State */
|
775 | 831b7825 | ths | memset(ts, 0, sizeof(TaskState)); |
776 | 831b7825 | ths | env->opaque = ts; |
777 | 831b7825 | ths | ts->used = 1;
|
778 | 831b7825 | ths | env->user_mode_only = 1;
|
779 | 831b7825 | ths | |
780 | 831b7825 | ths | #if defined(TARGET_I386)
|
781 | 831b7825 | ths | cpu_x86_set_cpl(env, 3);
|
782 | 831b7825 | ths | |
783 | 831b7825 | ths | env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK;
|
784 | 831b7825 | ths | env->hflags |= HF_PE_MASK; |
785 | 831b7825 | ths | |
786 | 831b7825 | ths | if (env->cpuid_features & CPUID_SSE) {
|
787 | 831b7825 | ths | env->cr[4] |= CR4_OSFXSR_MASK;
|
788 | 831b7825 | ths | env->hflags |= HF_OSFXSR_MASK; |
789 | 831b7825 | ths | } |
790 | 831b7825 | ths | |
791 | 831b7825 | ths | /* flags setup : we activate the IRQs by default as in user mode */
|
792 | 831b7825 | ths | env->eflags |= IF_MASK; |
793 | 831b7825 | ths | |
794 | 831b7825 | ths | /* darwin register setup */
|
795 | 831b7825 | ths | env->regs[R_EAX] = regs->eax; |
796 | 831b7825 | ths | env->regs[R_EBX] = regs->ebx; |
797 | 831b7825 | ths | env->regs[R_ECX] = regs->ecx; |
798 | 831b7825 | ths | env->regs[R_EDX] = regs->edx; |
799 | 831b7825 | ths | env->regs[R_ESI] = regs->esi; |
800 | 831b7825 | ths | env->regs[R_EDI] = regs->edi; |
801 | 831b7825 | ths | env->regs[R_EBP] = regs->ebp; |
802 | 831b7825 | ths | env->regs[R_ESP] = regs->esp; |
803 | 831b7825 | ths | env->eip = regs->eip; |
804 | 831b7825 | ths | |
805 | 831b7825 | ths | /* Darwin LDT setup */
|
806 | 831b7825 | ths | /* 2 - User code segment
|
807 | 831b7825 | ths | 3 - User data segment
|
808 | 831b7825 | ths | 4 - User cthread */
|
809 | 831b7825 | ths | bzero(ldt_table, LDT_TABLE_SIZE * sizeof(ldt_table[0])); |
810 | 831b7825 | ths | env->ldt.base = (uint32_t) ldt_table; |
811 | 831b7825 | ths | env->ldt.limit = sizeof(ldt_table) - 1; |
812 | 831b7825 | ths | |
813 | 831b7825 | ths | write_dt(ldt_table + 2, 0, 0xfffff, |
814 | 831b7825 | ths | DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | |
815 | 831b7825 | ths | (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT)); |
816 | 831b7825 | ths | write_dt(ldt_table + 3, 0, 0xfffff, |
817 | 831b7825 | ths | DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | |
818 | 831b7825 | ths | (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT)); |
819 | 831b7825 | ths | write_dt(ldt_table + 4, 0, 0xfffff, |
820 | 831b7825 | ths | DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | |
821 | 831b7825 | ths | (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT)); |
822 | 831b7825 | ths | |
823 | 831b7825 | ths | /* Darwin GDT setup.
|
824 | 831b7825 | ths | * has changed a lot between old Darwin/x86 (pre-Mac Intel) and Mac OS X/x86,
|
825 | 831b7825 | ths | now everything is done via int 0x81(mach) int 0x82 (thread) and sysenter/sysexit(unix) */
|
826 | 831b7825 | ths | bzero(gdt_table, sizeof(gdt_table));
|
827 | 831b7825 | ths | env->gdt.base = (uint32_t)gdt_table; |
828 | 831b7825 | ths | env->gdt.limit = sizeof(gdt_table) - 1; |
829 | 831b7825 | ths | |
830 | 831b7825 | ths | /* Set up a back door to handle sysenter syscalls (unix) */
|
831 | 831b7825 | ths | char * syscallbackdoor = malloc(64); |
832 | 831b7825 | ths | page_set_flags((int)syscallbackdoor, (int)syscallbackdoor + 64, PROT_EXEC | PROT_READ | PAGE_VALID); |
833 | 831b7825 | ths | |
834 | 831b7825 | ths | int i = 0; |
835 | 831b7825 | ths | syscallbackdoor[i++] = 0xcd;
|
836 | 831b7825 | ths | syscallbackdoor[i++] = 0x90; /* int 0x90 */ |
837 | 831b7825 | ths | syscallbackdoor[i++] = 0x0F;
|
838 | 831b7825 | ths | syscallbackdoor[i++] = 0x35; /* sysexit */ |
839 | 831b7825 | ths | |
840 | 831b7825 | ths | /* Darwin sysenter/sysexit setup */
|
841 | 831b7825 | ths | env->sysenter_cs = 0x1; //XXX |
842 | 831b7825 | ths | env->sysenter_eip = (int)syscallbackdoor;
|
843 | 831b7825 | ths | env->sysenter_esp = (int)malloc(64); |
844 | 831b7825 | ths | |
845 | 831b7825 | ths | /* Darwin TSS setup
|
846 | 831b7825 | ths | This must match up with GDT[4] */
|
847 | 831b7825 | ths | env->tr.base = (uint32_t) tss; |
848 | 831b7825 | ths | env->tr.limit = sizeof(tss) - 1; |
849 | 831b7825 | ths | env->tr.flags = DESC_P_MASK | (0x9 << DESC_TYPE_SHIFT);
|
850 | 831b7825 | ths | stw(tss + 2, 0x10); // ss0 = 0x10 = GDT[2] = Kernel Data Segment |
851 | 831b7825 | ths | |
852 | 831b7825 | ths | /* Darwin interrupt setup */
|
853 | 831b7825 | ths | bzero(idt_table, sizeof(idt_table));
|
854 | 831b7825 | ths | env->idt.base = (uint32_t) idt_table; |
855 | 831b7825 | ths | env->idt.limit = sizeof(idt_table) - 1; |
856 | 831b7825 | ths | set_idt(0, 0); |
857 | 831b7825 | ths | set_idt(1, 0); |
858 | 831b7825 | ths | set_idt(2, 0); |
859 | 831b7825 | ths | set_idt(3, 3); |
860 | 831b7825 | ths | set_idt(4, 3); |
861 | 831b7825 | ths | set_idt(5, 3); |
862 | 831b7825 | ths | set_idt(6, 0); |
863 | 831b7825 | ths | set_idt(7, 0); |
864 | 831b7825 | ths | set_idt(8, 0); |
865 | 831b7825 | ths | set_idt(9, 0); |
866 | 831b7825 | ths | set_idt(10, 0); |
867 | 831b7825 | ths | set_idt(11, 0); |
868 | 831b7825 | ths | set_idt(12, 0); |
869 | 831b7825 | ths | set_idt(13, 0); |
870 | 831b7825 | ths | set_idt(14, 0); |
871 | 831b7825 | ths | set_idt(15, 0); |
872 | 831b7825 | ths | set_idt(16, 0); |
873 | 831b7825 | ths | set_idt(17, 0); |
874 | 831b7825 | ths | set_idt(18, 0); |
875 | 831b7825 | ths | set_idt(19, 0); |
876 | 831b7825 | ths | /* Syscalls are done via
|
877 | 831b7825 | ths | int 0x80 (unix) (rarely used)
|
878 | 831b7825 | ths | int 0x81 (mach)
|
879 | 831b7825 | ths | int 0x82 (thread)
|
880 | 831b7825 | ths | int 0x83 (diag) (not handled here)
|
881 | 831b7825 | ths | sysenter/sysexit (unix) -> we redirect that to int 0x90 */
|
882 | 831b7825 | ths | set_idt(0x79, 3); /* Commpage hack, here is our backdoor interrupt */ |
883 | 831b7825 | ths | set_idt(0x80, 3); /* Unix Syscall */ |
884 | 831b7825 | ths | set_idt(0x81, 3); /* Mach Syscalls */ |
885 | 831b7825 | ths | set_idt(0x82, 3); /* thread Syscalls */ |
886 | 831b7825 | ths | |
887 | 1e2bed4f | bellard | set_idt(0x90, 3); /* qemu-darwin-user's Unix syscalls backdoor */ |
888 | 831b7825 | ths | |
889 | 831b7825 | ths | |
890 | 831b7825 | ths | cpu_x86_load_seg(env, R_CS, __USER_CS); |
891 | 831b7825 | ths | cpu_x86_load_seg(env, R_DS, __USER_DS); |
892 | 831b7825 | ths | cpu_x86_load_seg(env, R_ES, __USER_DS); |
893 | 831b7825 | ths | cpu_x86_load_seg(env, R_SS, __USER_DS); |
894 | 831b7825 | ths | cpu_x86_load_seg(env, R_FS, __USER_DS); |
895 | 831b7825 | ths | cpu_x86_load_seg(env, R_GS, __USER_DS); |
896 | 831b7825 | ths | |
897 | 831b7825 | ths | #elif defined(TARGET_PPC)
|
898 | 831b7825 | ths | { |
899 | 831b7825 | ths | int i;
|
900 | 831b7825 | ths | env->nip = regs->nip; |
901 | 831b7825 | ths | for(i = 0; i < 32; i++) { |
902 | 831b7825 | ths | env->gpr[i] = regs->gpr[i]; |
903 | 831b7825 | ths | } |
904 | 831b7825 | ths | } |
905 | 831b7825 | ths | #else
|
906 | 831b7825 | ths | #error unsupported target CPU
|
907 | 831b7825 | ths | #endif
|
908 | 831b7825 | ths | |
909 | 831b7825 | ths | if (use_gdbstub) {
|
910 | 831b7825 | ths | printf("Waiting for gdb Connection on port 1234...\n");
|
911 | 831b7825 | ths | gdbserver_start (1234);
|
912 | 831b7825 | ths | gdb_handlesig(env, 0);
|
913 | 831b7825 | ths | } |
914 | 831b7825 | ths | |
915 | 831b7825 | ths | cpu_loop(env); |
916 | 831b7825 | ths | /* never exits */
|
917 | 831b7825 | ths | return 0; |
918 | 831b7825 | ths | } |