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Diffstat (limited to 'arch/cris/arch-v32/mach-fs/vcs_hook.c')
-rw-r--r--arch/cris/arch-v32/mach-fs/vcs_hook.c100
1 files changed, 100 insertions, 0 deletions
diff --git a/arch/cris/arch-v32/mach-fs/vcs_hook.c b/arch/cris/arch-v32/mach-fs/vcs_hook.c
new file mode 100644
index 000000000000..593b10f07ef1
--- /dev/null
+++ b/arch/cris/arch-v32/mach-fs/vcs_hook.c
@@ -0,0 +1,100 @@
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 <asm/arch-v32/hwregs/reg_map.h>
9#include <asm/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
22int 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
78unsigned hook_buf(unsigned i)
79{
80 return (HOOK_DATA(i));
81}
82
83void 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
91void CPU_KICK_DOG(void)
92{
93 (void)hook_call(hook_kick_dog, 0);
94}
95
96void CPU_WATCHDOG_TIMEOUT(unsigned t)
97{
98 (void)hook_call(hook_dog_timeout, 1, t);
99}
100