1 /*
2 * Call simulator hook. This is the part running in the
3 * simulated program.
4 */
5
6 #include "vcs_hook.h"
7 #include <stdarg.h>
8 #include <arch-v32/hwregs/reg_map.h>
9 #include <arch-v32/hwregs/intr_vect_defs.h>
10
11 #define HOOK_TRIG_ADDR 0xb7000000 /* hook cvlog model reg address */
12 #define HOOK_MEM_BASE_ADDR 0xa0000000 /* csp4 (shared mem) base addr */
13
14 #define HOOK_DATA(offset) ((unsigned *)HOOK_MEM_BASE_ADDR)[offset]
15 #define VHOOK_DATA(offset) ((volatile unsigned *)HOOK_MEM_BASE_ADDR)[offset]
16 #define HOOK_TRIG(funcid) \
17 do { \
18 *((unsigned *) HOOK_TRIG_ADDR) = funcid; \
19 } while (0)
20 #define HOOK_DATA_BYTE(offset) ((unsigned char *)HOOK_MEM_BASE_ADDR)[offset]
21
hook_call(unsigned id,unsigned pcnt,...)22 int hook_call(unsigned id, unsigned pcnt, ...)
23 {
24 va_list ap;
25 unsigned i;
26 unsigned ret;
27 #ifdef USING_SOS
28 PREEMPT_OFF_SAVE();
29 #endif
30
31 /* pass parameters */
32 HOOK_DATA(0) = id;
33
34 /* Have to make hook_print_str a special case since we call with a
35 * parameter of byte type. Should perhaps be a separate
36 * hook_call. */
37
38 if (id == hook_print_str) {
39 int i;
40 char *str;
41
42 HOOK_DATA(1) = pcnt;
43
44 va_start(ap, pcnt);
45 str = (char *)va_arg(ap, unsigned);
46
47 for (i = 0; i != pcnt; i++)
48 HOOK_DATA_BYTE(8 + i) = str[i];
49
50 HOOK_DATA_BYTE(8 + i) = 0; /* null byte */
51 } else {
52 va_start(ap, pcnt);
53 for (i = 1; i <= pcnt; i++)
54 HOOK_DATA(i) = va_arg(ap, unsigned);
55 va_end(ap);
56 }
57
58 /* read from mem to make sure data has propagated to memory before
59 * trigging */
60 ret = *((volatile unsigned *)HOOK_MEM_BASE_ADDR);
61
62 /* trigger hook */
63 HOOK_TRIG(id);
64
65 /* wait for call to finish */
66 while (VHOOK_DATA(0) > 0) ;
67
68 /* extract return value */
69
70 ret = VHOOK_DATA(1);
71
72 #ifdef USING_SOS
73 PREEMPT_RESTORE();
74 #endif
75 return ret;
76 }
77
hook_buf(unsigned i)78 unsigned hook_buf(unsigned i)
79 {
80 return (HOOK_DATA(i));
81 }
82
print_str(const char * str)83 void print_str(const char *str)
84 {
85 int i;
86 /* find null at end of string */
87 for (i = 1; str[i]; i++) ;
88 hook_call(hook_print_str, i, str);
89 }
90
CPU_KICK_DOG(void)91 void CPU_KICK_DOG(void)
92 {
93 (void)hook_call(hook_kick_dog, 0);
94 }
95
CPU_WATCHDOG_TIMEOUT(unsigned t)96 void CPU_WATCHDOG_TIMEOUT(unsigned t)
97 {
98 (void)hook_call(hook_dog_timeout, 1, t);
99 }
100
101