root / tests / testsig.c @ 2792c4f2
History | View | Annotate | Download (4.3 kB)
1 | 9de5e440 | bellard | #define _GNU_SOURCE
|
---|---|---|---|
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);
|
15 | 1b6b029e | bellard | alarm(1);
|
16 | 1b6b029e | bellard | } |
17 | 1b6b029e | bellard | |
18 | d691f669 | bellard | #ifndef REG_EAX
|
19 | d691f669 | bellard | #define REG_EAX EAX
|
20 | d691f669 | bellard | #define REG_EBX EBX
|
21 | d691f669 | bellard | #define REG_ECX ECX
|
22 | d691f669 | bellard | #define REG_EDX EDX
|
23 | d691f669 | bellard | #define REG_ESI ESI
|
24 | d691f669 | bellard | #define REG_EDI EDI
|
25 | d691f669 | bellard | #define REG_EBP EBP
|
26 | d691f669 | bellard | #define REG_ESP ESP
|
27 | d691f669 | bellard | #define REG_EIP EIP
|
28 | d691f669 | bellard | #define REG_EFL EFL
|
29 | a69d83b6 | bellard | #define REG_TRAPNO TRAPNO
|
30 | a69d83b6 | bellard | #define REG_ERR ERR
|
31 | d691f669 | bellard | #endif
|
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"
|
36 | 9de5e440 | bellard | "ESI=%08x EDI=%08x EBP=%08x ESP=%08x\n"
|
37 | a69d83b6 | bellard | "EFL=%08x EIP=%08x trapno=%02x err=%08x\n",
|
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;
|
55 | 9de5e440 | bellard | |
56 | 9de5e440 | bellard | printf("%s: si_signo=%d si_errno=%d si_code=%d si_addr=0x%08lx\n",
|
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);
|
62 | 9de5e440 | bellard | } |
63 | 9de5e440 | bellard | |
64 | 9de5e440 | bellard | int v1;
|
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;
|
70 | a69d83b6 | bellard | 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);
|
76 | a69d83b6 | bellard | sigaction(SIGILL, &act, NULL);
|
77 | a69d83b6 | bellard | sigaction(SIGSEGV, &act, NULL);
|
78 | a69d83b6 | bellard | |
79 | 9de5e440 | bellard | /* test division by zero reporting */
|
80 | 9de5e440 | bellard | if (setjmp(jmp_env) == 0) { |
81 | 9de5e440 | bellard | /* now divide by zero */
|
82 | 9de5e440 | bellard | v1 = 0;
|
83 | 9de5e440 | bellard | v1 = 2 / v1;
|
84 | 9de5e440 | bellard | } |
85 | 9de5e440 | bellard | |
86 | 9de5e440 | bellard | /* test illegal instruction reporting */
|
87 | 9de5e440 | bellard | if (setjmp(jmp_env) == 0) { |
88 | 9de5e440 | bellard | /* now execute an invalid instruction */
|
89 | 9de5e440 | bellard | asm volatile("ud2"); |
90 | 9de5e440 | bellard | } |
91 | 9de5e440 | bellard | |
92 | 9de5e440 | bellard | /* test SEGV reporting */
|
93 | 9de5e440 | bellard | if (setjmp(jmp_env) == 0) { |
94 | 9de5e440 | bellard | /* now store in an invalid address */
|
95 | 9de5e440 | bellard | *(char *)0x1234 = 1; |
96 | 9de5e440 | bellard | } |
97 | a69d83b6 | bellard | |
98 | a69d83b6 | bellard | /* test SEGV reporting */
|
99 | a69d83b6 | bellard | if (setjmp(jmp_env) == 0) { |
100 | a69d83b6 | bellard | /* read from an invalid address */
|
101 | a69d83b6 | bellard | v1 = *(char *)0x1234; |
102 | a69d83b6 | bellard | } |
103 | 9de5e440 | bellard | |
104 | a69d83b6 | bellard | printf("segment GPF exception:\n");
|
105 | a69d83b6 | bellard | if (setjmp(jmp_env) == 0) { |
106 | a69d83b6 | bellard | /* load an invalid segment */
|
107 | a69d83b6 | bellard | asm volatile ("movl %0, %%fs" : : "r" ((0x1234 << 3) | 0)); |
108 | a69d83b6 | bellard | } |
109 | a69d83b6 | bellard | |
110 | a69d83b6 | bellard | printf("INT exception:\n");
|
111 | a69d83b6 | bellard | if (setjmp(jmp_env) == 0) { |
112 | a69d83b6 | bellard | asm volatile ("int $0xfd"); |
113 | a69d83b6 | bellard | } |
114 | a69d83b6 | bellard | |
115 | a69d83b6 | bellard | printf("CLI exception:\n");
|
116 | a69d83b6 | bellard | if (setjmp(jmp_env) == 0) { |
117 | a69d83b6 | bellard | asm volatile ("cli"); |
118 | a69d83b6 | bellard | } |
119 | a69d83b6 | bellard | |
120 | a69d83b6 | bellard | printf("STI exception:\n");
|
121 | a69d83b6 | bellard | if (setjmp(jmp_env) == 0) { |
122 | a69d83b6 | bellard | asm volatile ("cli"); |
123 | a69d83b6 | bellard | } |
124 | a69d83b6 | bellard | |
125 | a69d83b6 | bellard | printf("INTO exception:\n");
|
126 | a69d83b6 | bellard | if (setjmp(jmp_env) == 0) { |
127 | a69d83b6 | bellard | /* overflow exception */
|
128 | a69d83b6 | bellard | asm volatile ("addl $1, %0 ; into" : : "r" (0x7fffffff)); |
129 | a69d83b6 | bellard | } |
130 | a69d83b6 | bellard | |
131 | a69d83b6 | bellard | printf("BOUND exception:\n");
|
132 | a69d83b6 | bellard | if (setjmp(jmp_env) == 0) { |
133 | a69d83b6 | bellard | /* bound exception */
|
134 | a69d83b6 | bellard | tab[0] = 1; |
135 | a69d83b6 | bellard | tab[1] = 10; |
136 | a69d83b6 | bellard | asm volatile ("bound %0, %1" : : "r" (11), "m" (tab)); |
137 | a69d83b6 | bellard | } |
138 | a69d83b6 | bellard | |
139 | a69d83b6 | bellard | printf("OUTB exception:\n");
|
140 | a69d83b6 | bellard | if (setjmp(jmp_env) == 0) { |
141 | a69d83b6 | bellard | asm volatile ("outb %%al, %%dx" : : "d" (0x4321), "a" (0)); |
142 | a69d83b6 | bellard | } |
143 | a69d83b6 | bellard | |
144 | a69d83b6 | bellard | printf("INB exception:\n");
|
145 | a69d83b6 | bellard | if (setjmp(jmp_env) == 0) { |
146 | a69d83b6 | bellard | asm volatile ("inb %%dx, %%al" : "=a" (val) : "d" (0x4321)); |
147 | 1b6b029e | bellard | } |
148 | a69d83b6 | bellard | |
149 | a69d83b6 | bellard | printf("REP OUTSB exception:\n");
|
150 | a69d83b6 | bellard | if (setjmp(jmp_env) == 0) { |
151 | a69d83b6 | bellard | asm volatile ("rep outsb" : : "d" (0x4321), "S" (tab), "c" (1)); |
152 | a69d83b6 | bellard | } |
153 | a69d83b6 | bellard | |
154 | a69d83b6 | bellard | printf("REP INSB exception:\n");
|
155 | a69d83b6 | bellard | if (setjmp(jmp_env) == 0) { |
156 | a69d83b6 | bellard | asm volatile ("rep insb" : : "d" (0x4321), "D" (tab), "c" (1)); |
157 | a69d83b6 | bellard | } |
158 | a69d83b6 | bellard | |
159 | a69d83b6 | bellard | printf("HLT exception:\n");
|
160 | a69d83b6 | bellard | if (setjmp(jmp_env) == 0) { |
161 | a69d83b6 | bellard | asm volatile ("hlt" : : "d" (0x4321), "D" (tab), "c" (1)); |
162 | a69d83b6 | bellard | } |
163 | a69d83b6 | bellard | |
164 | a69d83b6 | bellard | #if 0
|
165 | a69d83b6 | bellard | {
|
166 | a69d83b6 | bellard | int i;
|
167 | a69d83b6 | bellard | act.sa_handler = alarm_handler;
|
168 | a69d83b6 | bellard | sigemptyset(&act.sa_mask);
|
169 | a69d83b6 | bellard | act.sa_flags = 0;
|
170 | a69d83b6 | bellard | sigaction(SIGALRM, &act, NULL);
|
171 | a69d83b6 | bellard | alarm(1);
|
172 | a69d83b6 | bellard | for(i = 0;i < 2; i++) {
|
173 | a69d83b6 | bellard | sleep(1);
|
174 | a69d83b6 | bellard | }
|
175 | a69d83b6 | bellard | }
|
176 | a69d83b6 | bellard | #endif
|
177 | 1b6b029e | bellard | return 0; |
178 | 1b6b029e | bellard | } |