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Diffstat (limited to 'arch/cris/arch-v32/kernel/vcs_hook.c')
-rw-r--r--arch/cris/arch-v32/kernel/vcs_hook.c96
1 files changed, 96 insertions, 0 deletions
diff --git a/arch/cris/arch-v32/kernel/vcs_hook.c b/arch/cris/arch-v32/kernel/vcs_hook.c
new file mode 100644
index 00000000000..64d71c54c22
--- /dev/null
+++ b/arch/cris/arch-v32/kernel/vcs_hook.c
@@ -0,0 +1,96 @@
+// $Id: vcs_hook.c,v 1.2 2003/08/12 12:01:06 starvik Exp $
+//
+// Call simulator hook. This is the part running in the
+// simulated program.
+//
+
+#include "vcs_hook.h"
+#include <stdarg.h>
+#include <asm/arch-v32/hwregs/reg_map.h>
+#include <asm/arch-v32/hwregs/intr_vect_defs.h>
+
+#define HOOK_TRIG_ADDR 0xb7000000 /* hook cvlog model reg address */
+#define HOOK_MEM_BASE_ADDR 0xa0000000 /* csp4 (shared mem) base addr */
+
+#define HOOK_DATA(offset) ((unsigned*) HOOK_MEM_BASE_ADDR)[offset]
+#define VHOOK_DATA(offset) ((volatile unsigned*) HOOK_MEM_BASE_ADDR)[offset]
+#define HOOK_TRIG(funcid) do { *((unsigned *) HOOK_TRIG_ADDR) = funcid; } while(0)
+#define HOOK_DATA_BYTE(offset) ((unsigned char*) HOOK_MEM_BASE_ADDR)[offset]
+
+
+// ------------------------------------------------------------------ hook_call
+int hook_call( unsigned id, unsigned pcnt, ...) {
+ va_list ap;
+ unsigned i;
+ unsigned ret;
+#ifdef USING_SOS
+ PREEMPT_OFF_SAVE();
+#endif
+
+ // pass parameters
+ HOOK_DATA(0) = id;
+
+ /* Have to make hook_print_str a special case since we call with a
+ parameter of byte type. Should perhaps be a separate
+ hook_call. */
+
+ if (id == hook_print_str) {
+ int i;
+ char *str;
+
+ HOOK_DATA(1) = pcnt;
+
+ va_start(ap, pcnt);
+ str = (char*)va_arg(ap,unsigned);
+
+ for (i=0; i!=pcnt; i++) {
+ HOOK_DATA_BYTE(8+i) = str[i];
+ }
+ HOOK_DATA_BYTE(8+i) = 0; /* null byte */
+ }
+ else {
+ va_start(ap, pcnt);
+ for( i = 1; i <= pcnt; i++ ) HOOK_DATA(i) = va_arg(ap,unsigned);
+ va_end(ap);
+ }
+
+ // read from mem to make sure data has propagated to memory before trigging
+ *((volatile unsigned*) HOOK_MEM_BASE_ADDR);
+
+ // trigger hook
+ HOOK_TRIG(id);
+
+ // wait for call to finish
+ while( VHOOK_DATA(0) > 0 ) {}
+
+ // extract return value
+
+ ret = VHOOK_DATA(1);
+
+#ifdef USING_SOS
+ PREEMPT_RESTORE();
+#endif
+ return ret;
+}
+
+unsigned
+hook_buf(unsigned i)
+{
+ return (HOOK_DATA(i));
+}
+
+void print_str( const char *str ) {
+ int i;
+ for (i=1; str[i]; i++); /* find null at end of string */
+ hook_call(hook_print_str, i, str);
+}
+
+// --------------------------------------------------------------- CPU_KICK_DOG
+void CPU_KICK_DOG(void) {
+ (void) hook_call( hook_kick_dog, 0 );
+}
+
+// ------------------------------------------------------- CPU_WATCHDOG_TIMEOUT
+void CPU_WATCHDOG_TIMEOUT( unsigned t ) {
+ (void) hook_call( hook_dog_timeout, 1, t );
+}