26 |
#define REG_ESP ESP |
#define REG_ESP ESP |
27 |
#define REG_EIP EIP |
#define REG_EIP EIP |
28 |
#define REG_EFL EFL |
#define REG_EFL EFL |
29 |
|
#define REG_TRAPNO TRAPNO |
30 |
|
#define REG_ERR ERR |
31 |
#endif |
#endif |
32 |
|
|
33 |
void dump_regs(struct ucontext *uc) |
void dump_regs(struct ucontext *uc) |
34 |
{ |
{ |
35 |
printf("EAX=%08x EBX=%08x ECX=%08x EDX=%08x\n" |
printf("EAX=%08x EBX=%08x ECX=%08x EDX=%08x\n" |
36 |
"ESI=%08x EDI=%08x EBP=%08x ESP=%08x\n" |
"ESI=%08x EDI=%08x EBP=%08x ESP=%08x\n" |
37 |
"EFL=%08x EIP=%08x\n", |
"EFL=%08x EIP=%08x trapno=%02x err=%08x\n", |
38 |
uc->uc_mcontext.gregs[REG_EAX], |
uc->uc_mcontext.gregs[REG_EAX], |
39 |
uc->uc_mcontext.gregs[REG_EBX], |
uc->uc_mcontext.gregs[REG_EBX], |
40 |
uc->uc_mcontext.gregs[REG_ECX], |
uc->uc_mcontext.gregs[REG_ECX], |
44 |
uc->uc_mcontext.gregs[REG_EBP], |
uc->uc_mcontext.gregs[REG_EBP], |
45 |
uc->uc_mcontext.gregs[REG_ESP], |
uc->uc_mcontext.gregs[REG_ESP], |
46 |
uc->uc_mcontext.gregs[REG_EFL], |
uc->uc_mcontext.gregs[REG_EFL], |
47 |
uc->uc_mcontext.gregs[REG_EIP]); |
uc->uc_mcontext.gregs[REG_EIP], |
48 |
|
uc->uc_mcontext.gregs[REG_TRAPNO], |
49 |
|
uc->uc_mcontext.gregs[REG_ERR]); |
50 |
} |
} |
51 |
|
|
52 |
void sig_handler(int sig, siginfo_t *info, void *puc) |
void sig_handler(int sig, siginfo_t *info, void *puc) |
62 |
} |
} |
63 |
|
|
64 |
int v1; |
int v1; |
65 |
|
int tab[2]; |
66 |
|
|
67 |
int main(int argc, char **argv) |
int main(int argc, char **argv) |
68 |
{ |
{ |
69 |
struct sigaction act; |
struct sigaction act; |
70 |
int i; |
int val; |
71 |
|
|
72 |
|
act.sa_sigaction = sig_handler; |
73 |
|
sigemptyset(&act.sa_mask); |
74 |
|
act.sa_flags = SA_SIGINFO; |
75 |
|
sigaction(SIGFPE, &act, NULL); |
76 |
|
sigaction(SIGILL, &act, NULL); |
77 |
|
sigaction(SIGSEGV, &act, NULL); |
78 |
|
|
79 |
/* test division by zero reporting */ |
/* test division by zero reporting */ |
80 |
if (setjmp(jmp_env) == 0) { |
if (setjmp(jmp_env) == 0) { |
|
act.sa_sigaction = sig_handler; |
|
|
sigemptyset(&act.sa_mask); |
|
|
act.sa_flags = SA_SIGINFO | SA_ONESHOT; |
|
|
sigaction(SIGFPE, &act, NULL); |
|
|
|
|
81 |
/* now divide by zero */ |
/* now divide by zero */ |
82 |
v1 = 0; |
v1 = 0; |
83 |
v1 = 2 / v1; |
v1 = 2 / v1; |
85 |
|
|
86 |
/* test illegal instruction reporting */ |
/* test illegal instruction reporting */ |
87 |
if (setjmp(jmp_env) == 0) { |
if (setjmp(jmp_env) == 0) { |
|
act.sa_sigaction = sig_handler; |
|
|
sigemptyset(&act.sa_mask); |
|
|
act.sa_flags = SA_SIGINFO | SA_ONESHOT; |
|
|
sigaction(SIGILL, &act, NULL); |
|
|
|
|
88 |
/* now execute an invalid instruction */ |
/* now execute an invalid instruction */ |
89 |
asm volatile("ud2"); |
asm volatile("ud2"); |
90 |
} |
} |
91 |
|
|
92 |
/* test SEGV reporting */ |
/* test SEGV reporting */ |
93 |
if (setjmp(jmp_env) == 0) { |
if (setjmp(jmp_env) == 0) { |
|
act.sa_sigaction = sig_handler; |
|
|
sigemptyset(&act.sa_mask); |
|
|
act.sa_flags = SA_SIGINFO | SA_ONESHOT; |
|
|
sigaction(SIGSEGV, &act, NULL); |
|
|
|
|
94 |
/* now store in an invalid address */ |
/* now store in an invalid address */ |
95 |
*(char *)0x1234 = 1; |
*(char *)0x1234 = 1; |
96 |
} |
} |
97 |
|
|
98 |
|
/* test SEGV reporting */ |
99 |
|
if (setjmp(jmp_env) == 0) { |
100 |
|
/* read from an invalid address */ |
101 |
|
v1 = *(char *)0x1234; |
102 |
|
} |
103 |
|
|
104 |
act.sa_handler = alarm_handler; |
printf("segment GPF exception:\n"); |
105 |
sigemptyset(&act.sa_mask); |
if (setjmp(jmp_env) == 0) { |
106 |
act.sa_flags = 0; |
/* load an invalid segment */ |
107 |
sigaction(SIGALRM, &act, NULL); |
asm volatile ("movl %0, %%fs" : : "r" ((0x1234 << 3) | 0)); |
108 |
alarm(1); |
} |
109 |
for(i = 0;i < 2; i++) { |
|
110 |
sleep(1); |
printf("INT exception:\n"); |
111 |
|
if (setjmp(jmp_env) == 0) { |
112 |
|
asm volatile ("int $0xfd"); |
113 |
|
} |
114 |
|
|
115 |
|
printf("CLI exception:\n"); |
116 |
|
if (setjmp(jmp_env) == 0) { |
117 |
|
asm volatile ("cli"); |
118 |
|
} |
119 |
|
|
120 |
|
printf("STI exception:\n"); |
121 |
|
if (setjmp(jmp_env) == 0) { |
122 |
|
asm volatile ("cli"); |
123 |
|
} |
124 |
|
|
125 |
|
printf("INTO exception:\n"); |
126 |
|
if (setjmp(jmp_env) == 0) { |
127 |
|
/* overflow exception */ |
128 |
|
asm volatile ("addl $1, %0 ; into" : : "r" (0x7fffffff)); |
129 |
} |
} |
130 |
|
|
131 |
|
printf("BOUND exception:\n"); |
132 |
|
if (setjmp(jmp_env) == 0) { |
133 |
|
/* bound exception */ |
134 |
|
tab[0] = 1; |
135 |
|
tab[1] = 10; |
136 |
|
asm volatile ("bound %0, %1" : : "r" (11), "m" (tab)); |
137 |
|
} |
138 |
|
|
139 |
|
printf("OUTB exception:\n"); |
140 |
|
if (setjmp(jmp_env) == 0) { |
141 |
|
asm volatile ("outb %%al, %%dx" : : "d" (0x4321), "a" (0)); |
142 |
|
} |
143 |
|
|
144 |
|
printf("INB exception:\n"); |
145 |
|
if (setjmp(jmp_env) == 0) { |
146 |
|
asm volatile ("inb %%dx, %%al" : "=a" (val) : "d" (0x4321)); |
147 |
|
} |
148 |
|
|
149 |
|
printf("REP OUTSB exception:\n"); |
150 |
|
if (setjmp(jmp_env) == 0) { |
151 |
|
asm volatile ("rep outsb" : : "d" (0x4321), "S" (tab), "c" (1)); |
152 |
|
} |
153 |
|
|
154 |
|
printf("REP INSB exception:\n"); |
155 |
|
if (setjmp(jmp_env) == 0) { |
156 |
|
asm volatile ("rep insb" : : "d" (0x4321), "D" (tab), "c" (1)); |
157 |
|
} |
158 |
|
|
159 |
|
printf("HLT exception:\n"); |
160 |
|
if (setjmp(jmp_env) == 0) { |
161 |
|
asm volatile ("hlt" : : "d" (0x4321), "D" (tab), "c" (1)); |
162 |
|
} |
163 |
|
|
164 |
|
#if 0 |
165 |
|
{ |
166 |
|
int i; |
167 |
|
act.sa_handler = alarm_handler; |
168 |
|
sigemptyset(&act.sa_mask); |
169 |
|
act.sa_flags = 0; |
170 |
|
sigaction(SIGALRM, &act, NULL); |
171 |
|
alarm(1); |
172 |
|
for(i = 0;i < 2; i++) { |
173 |
|
sleep(1); |
174 |
|
} |
175 |
|
} |
176 |
|
#endif |
177 |
return 0; |
return 0; |
178 |
} |
} |