101 lines
2.0 KiB
C
101 lines
2.0 KiB
C
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/*
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* Call simulator hook. This is the part running in the
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* simulated program.
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*/
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#include "vcs_hook.h"
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#include <stdarg.h>
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#include <arch-v32/hwregs/reg_map.h>
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#include <arch-v32/hwregs/intr_vect_defs.h>
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#define HOOK_TRIG_ADDR 0xb7000000 /* hook cvlog model reg address */
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#define HOOK_MEM_BASE_ADDR 0xa0000000 /* csp4 (shared mem) base addr */
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#define HOOK_DATA(offset) ((unsigned *)HOOK_MEM_BASE_ADDR)[offset]
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#define VHOOK_DATA(offset) ((volatile unsigned *)HOOK_MEM_BASE_ADDR)[offset]
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#define HOOK_TRIG(funcid) \
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do { \
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*((unsigned *) HOOK_TRIG_ADDR) = funcid; \
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} while (0)
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#define HOOK_DATA_BYTE(offset) ((unsigned char *)HOOK_MEM_BASE_ADDR)[offset]
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int hook_call(unsigned id, unsigned pcnt, ...)
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{
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va_list ap;
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unsigned i;
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unsigned ret;
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#ifdef USING_SOS
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PREEMPT_OFF_SAVE();
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#endif
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/* pass parameters */
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HOOK_DATA(0) = id;
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/* Have to make hook_print_str a special case since we call with a
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* parameter of byte type. Should perhaps be a separate
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* hook_call. */
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if (id == hook_print_str) {
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int i;
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char *str;
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HOOK_DATA(1) = pcnt;
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va_start(ap, pcnt);
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str = (char *)va_arg(ap, unsigned);
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for (i = 0; i != pcnt; i++)
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HOOK_DATA_BYTE(8 + i) = str[i];
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HOOK_DATA_BYTE(8 + i) = 0; /* null byte */
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} else {
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va_start(ap, pcnt);
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for (i = 1; i <= pcnt; i++)
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HOOK_DATA(i) = va_arg(ap, unsigned);
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va_end(ap);
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}
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/* read from mem to make sure data has propagated to memory before
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* trigging */
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ret = *((volatile unsigned *)HOOK_MEM_BASE_ADDR);
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/* trigger hook */
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HOOK_TRIG(id);
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/* wait for call to finish */
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while (VHOOK_DATA(0) > 0) ;
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/* extract return value */
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ret = VHOOK_DATA(1);
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#ifdef USING_SOS
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PREEMPT_RESTORE();
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#endif
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return ret;
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}
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unsigned hook_buf(unsigned i)
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{
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return (HOOK_DATA(i));
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}
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void print_str(const char *str)
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{
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int i;
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/* find null at end of string */
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for (i = 1; str[i]; i++) ;
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hook_call(hook_print_str, i, str);
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}
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void CPU_KICK_DOG(void)
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{
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(void)hook_call(hook_kick_dog, 0);
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}
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void CPU_WATCHDOG_TIMEOUT(unsigned t)
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{
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(void)hook_call(hook_dog_timeout, 1, t);
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}
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