]>
Commit | Line | Data |
---|---|---|
77846748 WD |
1 | #include <stddef.h> |
2 | #include <stdio.h> | |
3 | #include <string.h> | |
4 | ||
5 | void *func[8], **pfunc; | |
6 | ||
7 | typedef struct xxx xxx_t; | |
8 | struct xxx { | |
9 | int dummy; | |
10 | void **pfunc; | |
11 | } q; | |
12 | ||
13 | #define XF_strcpy 3 | |
14 | #define XF_printf 4 | |
15 | ||
16 | #define LABEL(x) \ | |
17 | asm volatile ( \ | |
18 | ||
19 | #if defined(__i386__) | |
20 | #define EXPORT_FUNC(x) \ | |
21 | asm volatile ( \ | |
22 | " .globl mon_" #x "\n" \ | |
23 | "mon_" #x ":\n" \ | |
24 | " movl %0, %%eax\n" \ | |
25 | " movl pfunc, %%ecx\n" \ | |
26 | " jmp *(%%ecx,%%eax)\n" \ | |
27 | : : "i"(XF_ ## x * sizeof(void *)) : "eax", "ecx"); | |
28 | #elif defined(__powerpc__) | |
29 | #define EXPORT_FUNC(x) \ | |
30 | asm volatile ( \ | |
31 | " .globl mon_" #x "\n" \ | |
32 | "mon_" #x ":\n" \ | |
33 | " lwz %%r11, %0(%%r29)\n" \ | |
34 | " lwz %%r11, %1(%%r11)\n" \ | |
35 | " mtctr %%r11\n" \ | |
36 | " bctr\n" \ | |
37 | : : "i"(offsetof(xxx_t, pfunc)), "i"(XF_ ## x * sizeof(void *)) : "r11", "r29"); | |
38 | #elif defined(__arm__) | |
39 | #define EXPORT_FUNC(x) \ | |
40 | asm volatile ( \ | |
41 | " .globl mon_" #x "\n" \ | |
42 | "mon_" #x ":\n" \ | |
43 | " ldr ip, [r8, %0]\n" \ | |
44 | " ldr pc, [ip, %1]\n" \ | |
45 | : : "i"(offsetof(xxx_t, pfunc)), "i"(XF_ ## x * sizeof(void *)) : "ip"); | |
46 | #elif defined(__mips__) | |
47 | #define EXPORT_FUNC(x) \ | |
48 | asm volatile ( \ | |
49 | " .globl mon_" #x "\n" \ | |
50 | "mon_" #x ":\n" \ | |
51 | " lw $25, %0($26)\n" \ | |
52 | " lw $25, %1($25)\n" \ | |
53 | " jr $25\n" \ | |
54 | : : "i"(offsetof(xxx_t, pfunc)), "i"(XF_ ## x * sizeof(void *)) : "t9"); | |
55 | #else | |
56 | #error [No stub code for this arch] | |
57 | #endif | |
58 | ||
59 | void dummy(void) | |
60 | { | |
61 | EXPORT_FUNC(printf) | |
62 | EXPORT_FUNC(strcpy) | |
63 | } | |
64 | ||
65 | int main(void) | |
66 | { | |
67 | #if defined(__i386__) | |
68 | xxx_t *pq; | |
69 | #elif defined(__powerpc__) | |
70 | register volatile xxx_t *pq asm("r29"); | |
71 | #elif defined(__arm__) | |
72 | register volatile xxx_t *pq asm("r8"); | |
73 | #elif defined(__mips__) | |
74 | register volatile xxx_t *pq asm("k0"); | |
75 | #endif | |
76 | char buf[32]; | |
77 | ||
78 | func[XF_strcpy] = strcpy; | |
79 | func[XF_printf] = printf; | |
80 | pq = &q; | |
81 | pq->pfunc = pfunc = func; | |
82 | ||
83 | mon_strcpy(buf, "test"); | |
84 | mon_printf("hi %s %d z\n", buf, 444); | |
85 | ||
86 | return 0; | |
87 | } |