root / tests / testsig.c @ e3b32540
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1 | 9de5e440 | bellard | #define _GNU_SOURCE
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2 | 1b6b029e | bellard | #include <stdlib.h> |
3 | 1b6b029e | bellard | #include <stdio.h> |
4 | 9de5e440 | bellard | #include <string.h> |
5 | 1b6b029e | bellard | #include <signal.h> |
6 | 1b6b029e | bellard | #include <unistd.h> |
7 | 9de5e440 | bellard | #include <setjmp.h> |
8 | 9de5e440 | bellard | #include <sys/ucontext.h> |
9 | 9de5e440 | bellard | |
10 | 9de5e440 | bellard | jmp_buf jmp_env; |
11 | 1b6b029e | bellard | |
12 | 1b6b029e | bellard | void alarm_handler(int sig) |
13 | 1b6b029e | bellard | { |
14 | 1b6b029e | bellard | printf("alarm signal=%d\n", sig);
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15 | 1b6b029e | bellard | alarm(1);
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16 | 1b6b029e | bellard | } |
17 | 1b6b029e | bellard | |
18 | d691f669 | bellard | #ifndef REG_EAX
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19 | d691f669 | bellard | #define REG_EAX EAX
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20 | d691f669 | bellard | #define REG_EBX EBX
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21 | d691f669 | bellard | #define REG_ECX ECX
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22 | d691f669 | bellard | #define REG_EDX EDX
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23 | d691f669 | bellard | #define REG_ESI ESI
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24 | d691f669 | bellard | #define REG_EDI EDI
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25 | d691f669 | bellard | #define REG_EBP EBP
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26 | d691f669 | bellard | #define REG_ESP ESP
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27 | d691f669 | bellard | #define REG_EIP EIP
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28 | d691f669 | bellard | #define REG_EFL EFL
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29 | a69d83b6 | bellard | #define REG_TRAPNO TRAPNO
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30 | a69d83b6 | bellard | #define REG_ERR ERR
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31 | d691f669 | bellard | #endif
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32 | d691f669 | bellard | |
33 | 9de5e440 | bellard | void dump_regs(struct ucontext *uc) |
34 | 9de5e440 | bellard | { |
35 | 9de5e440 | bellard | printf("EAX=%08x EBX=%08x ECX=%08x EDX=%08x\n"
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36 | 9de5e440 | bellard | "ESI=%08x EDI=%08x EBP=%08x ESP=%08x\n"
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37 | a69d83b6 | bellard | "EFL=%08x EIP=%08x trapno=%02x err=%08x\n",
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38 | d691f669 | bellard | uc->uc_mcontext.gregs[REG_EAX], |
39 | d691f669 | bellard | uc->uc_mcontext.gregs[REG_EBX], |
40 | d691f669 | bellard | uc->uc_mcontext.gregs[REG_ECX], |
41 | d691f669 | bellard | uc->uc_mcontext.gregs[REG_EDX], |
42 | d691f669 | bellard | uc->uc_mcontext.gregs[REG_ESI], |
43 | d691f669 | bellard | uc->uc_mcontext.gregs[REG_EDI], |
44 | d691f669 | bellard | uc->uc_mcontext.gregs[REG_EBP], |
45 | d691f669 | bellard | uc->uc_mcontext.gregs[REG_ESP], |
46 | d691f669 | bellard | uc->uc_mcontext.gregs[REG_EFL], |
47 | a69d83b6 | bellard | uc->uc_mcontext.gregs[REG_EIP], |
48 | a69d83b6 | bellard | uc->uc_mcontext.gregs[REG_TRAPNO], |
49 | a69d83b6 | bellard | uc->uc_mcontext.gregs[REG_ERR]); |
50 | 9de5e440 | bellard | } |
51 | 9de5e440 | bellard | |
52 | 9de5e440 | bellard | void sig_handler(int sig, siginfo_t *info, void *puc) |
53 | 9de5e440 | bellard | { |
54 | 9de5e440 | bellard | struct ucontext *uc = puc;
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55 | 9de5e440 | bellard | |
56 | 9de5e440 | bellard | printf("%s: si_signo=%d si_errno=%d si_code=%d si_addr=0x%08lx\n",
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57 | 9de5e440 | bellard | strsignal(info->si_signo), |
58 | 9de5e440 | bellard | info->si_signo, info->si_errno, info->si_code, |
59 | 9de5e440 | bellard | (unsigned long)info->si_addr); |
60 | 9de5e440 | bellard | dump_regs(uc); |
61 | 9de5e440 | bellard | longjmp(jmp_env, 1);
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62 | 9de5e440 | bellard | } |
63 | 9de5e440 | bellard | |
64 | 9de5e440 | bellard | int v1;
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65 | a69d83b6 | bellard | int tab[2]; |
66 | 9de5e440 | bellard | |
67 | 1b6b029e | bellard | int main(int argc, char **argv) |
68 | 1b6b029e | bellard | { |
69 | 1b6b029e | bellard | struct sigaction act;
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70 | 2a29ca73 | bellard | volatile int val; |
71 | 9de5e440 | bellard | |
72 | a69d83b6 | bellard | act.sa_sigaction = sig_handler; |
73 | a69d83b6 | bellard | sigemptyset(&act.sa_mask); |
74 | a69d83b6 | bellard | act.sa_flags = SA_SIGINFO; |
75 | a69d83b6 | bellard | sigaction(SIGFPE, &act, NULL);
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76 | a69d83b6 | bellard | sigaction(SIGILL, &act, NULL);
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77 | a69d83b6 | bellard | sigaction(SIGSEGV, &act, NULL);
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78 | 2a29ca73 | bellard | sigaction(SIGTRAP, &act, NULL);
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79 | a69d83b6 | bellard | |
80 | 9de5e440 | bellard | /* test division by zero reporting */
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81 | 9de5e440 | bellard | if (setjmp(jmp_env) == 0) { |
82 | 9de5e440 | bellard | /* now divide by zero */
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83 | 9de5e440 | bellard | v1 = 0;
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84 | 9de5e440 | bellard | v1 = 2 / v1;
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85 | 9de5e440 | bellard | } |
86 | 9de5e440 | bellard | |
87 | 9de5e440 | bellard | /* test illegal instruction reporting */
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88 | 9de5e440 | bellard | if (setjmp(jmp_env) == 0) { |
89 | 9de5e440 | bellard | /* now execute an invalid instruction */
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90 | 9de5e440 | bellard | asm volatile("ud2"); |
91 | 9de5e440 | bellard | } |
92 | 9de5e440 | bellard | |
93 | 9de5e440 | bellard | /* test SEGV reporting */
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94 | 9de5e440 | bellard | if (setjmp(jmp_env) == 0) { |
95 | 9de5e440 | bellard | /* now store in an invalid address */
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96 | 9de5e440 | bellard | *(char *)0x1234 = 1; |
97 | 9de5e440 | bellard | } |
98 | a69d83b6 | bellard | |
99 | a69d83b6 | bellard | /* test SEGV reporting */
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100 | a69d83b6 | bellard | if (setjmp(jmp_env) == 0) { |
101 | a69d83b6 | bellard | /* read from an invalid address */
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102 | a69d83b6 | bellard | v1 = *(char *)0x1234; |
103 | a69d83b6 | bellard | } |
104 | 9de5e440 | bellard | |
105 | a69d83b6 | bellard | printf("segment GPF exception:\n");
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106 | a69d83b6 | bellard | if (setjmp(jmp_env) == 0) { |
107 | a69d83b6 | bellard | /* load an invalid segment */
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108 | a69d83b6 | bellard | asm volatile ("movl %0, %%fs" : : "r" ((0x1234 << 3) | 0)); |
109 | a69d83b6 | bellard | } |
110 | a69d83b6 | bellard | |
111 | a69d83b6 | bellard | printf("INT exception:\n");
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112 | a69d83b6 | bellard | if (setjmp(jmp_env) == 0) { |
113 | a69d83b6 | bellard | asm volatile ("int $0xfd"); |
114 | a69d83b6 | bellard | } |
115 | a69d83b6 | bellard | |
116 | 2a29ca73 | bellard | printf("INT3 exception:\n");
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117 | 2a29ca73 | bellard | if (setjmp(jmp_env) == 0) { |
118 | 2a29ca73 | bellard | asm volatile ("int3"); |
119 | 2a29ca73 | bellard | } |
120 | 2a29ca73 | bellard | |
121 | a69d83b6 | bellard | printf("CLI exception:\n");
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122 | a69d83b6 | bellard | if (setjmp(jmp_env) == 0) { |
123 | a69d83b6 | bellard | asm volatile ("cli"); |
124 | a69d83b6 | bellard | } |
125 | a69d83b6 | bellard | |
126 | a69d83b6 | bellard | printf("STI exception:\n");
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127 | a69d83b6 | bellard | if (setjmp(jmp_env) == 0) { |
128 | a69d83b6 | bellard | asm volatile ("cli"); |
129 | a69d83b6 | bellard | } |
130 | a69d83b6 | bellard | |
131 | a69d83b6 | bellard | printf("INTO exception:\n");
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132 | a69d83b6 | bellard | if (setjmp(jmp_env) == 0) { |
133 | a69d83b6 | bellard | /* overflow exception */
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134 | a69d83b6 | bellard | asm volatile ("addl $1, %0 ; into" : : "r" (0x7fffffff)); |
135 | a69d83b6 | bellard | } |
136 | a69d83b6 | bellard | |
137 | a69d83b6 | bellard | printf("BOUND exception:\n");
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138 | a69d83b6 | bellard | if (setjmp(jmp_env) == 0) { |
139 | a69d83b6 | bellard | /* bound exception */
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140 | a69d83b6 | bellard | tab[0] = 1; |
141 | a69d83b6 | bellard | tab[1] = 10; |
142 | a69d83b6 | bellard | asm volatile ("bound %0, %1" : : "r" (11), "m" (tab)); |
143 | a69d83b6 | bellard | } |
144 | a69d83b6 | bellard | |
145 | a69d83b6 | bellard | printf("OUTB exception:\n");
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146 | a69d83b6 | bellard | if (setjmp(jmp_env) == 0) { |
147 | a69d83b6 | bellard | asm volatile ("outb %%al, %%dx" : : "d" (0x4321), "a" (0)); |
148 | a69d83b6 | bellard | } |
149 | a69d83b6 | bellard | |
150 | a69d83b6 | bellard | printf("INB exception:\n");
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151 | a69d83b6 | bellard | if (setjmp(jmp_env) == 0) { |
152 | a69d83b6 | bellard | asm volatile ("inb %%dx, %%al" : "=a" (val) : "d" (0x4321)); |
153 | 1b6b029e | bellard | } |
154 | a69d83b6 | bellard | |
155 | a69d83b6 | bellard | printf("REP OUTSB exception:\n");
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156 | a69d83b6 | bellard | if (setjmp(jmp_env) == 0) { |
157 | a69d83b6 | bellard | asm volatile ("rep outsb" : : "d" (0x4321), "S" (tab), "c" (1)); |
158 | a69d83b6 | bellard | } |
159 | a69d83b6 | bellard | |
160 | a69d83b6 | bellard | printf("REP INSB exception:\n");
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161 | a69d83b6 | bellard | if (setjmp(jmp_env) == 0) { |
162 | a69d83b6 | bellard | asm volatile ("rep insb" : : "d" (0x4321), "D" (tab), "c" (1)); |
163 | a69d83b6 | bellard | } |
164 | a69d83b6 | bellard | |
165 | a69d83b6 | bellard | printf("HLT exception:\n");
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166 | a69d83b6 | bellard | if (setjmp(jmp_env) == 0) { |
167 | 2a29ca73 | bellard | asm volatile ("hlt"); |
168 | a69d83b6 | bellard | } |
169 | a69d83b6 | bellard | |
170 | 2a29ca73 | bellard | printf("single step exception:\n");
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171 | 2a29ca73 | bellard | val = 0;
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172 | 2a29ca73 | bellard | if (setjmp(jmp_env) == 0) { |
173 | 2a29ca73 | bellard | asm volatile ("pushf\n" |
174 | 2a29ca73 | bellard | "orl $0x00100, (%%esp)\n"
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175 | 2a29ca73 | bellard | "popf\n"
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176 | 2a29ca73 | bellard | "movl $0xabcd, %0\n" : "=m" (val) : : "cc", "memory"); |
177 | 2a29ca73 | bellard | } |
178 | 2a29ca73 | bellard | printf("val=0x%x\n", val);
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179 | 2a29ca73 | bellard | |
180 | 2a29ca73 | bellard | #if 1 |
181 | a69d83b6 | bellard | { |
182 | a69d83b6 | bellard | int i;
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183 | a69d83b6 | bellard | act.sa_handler = alarm_handler; |
184 | a69d83b6 | bellard | sigemptyset(&act.sa_mask); |
185 | a69d83b6 | bellard | act.sa_flags = 0;
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186 | a69d83b6 | bellard | sigaction(SIGALRM, &act, NULL);
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187 | a69d83b6 | bellard | alarm(1);
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188 | a69d83b6 | bellard | for(i = 0;i < 2; i++) { |
189 | a69d83b6 | bellard | sleep(1);
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190 | a69d83b6 | bellard | } |
191 | a69d83b6 | bellard | } |
192 | a69d83b6 | bellard | #endif
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193 | 1b6b029e | bellard | return 0; |
194 | 1b6b029e | bellard | } |