extern void trapKernel(ExceptionStackFrame *exceptionStackFrame)
{
TracePrintf(512, "trapKernel: vector(%d), code(%d), addr(%d), psr(%d), pc(%d), sp(%d), regs(%s)\n",
exceptionStackFrame->vector, exceptionStackFrame->code, exceptionStackFrame->addr,
exceptionStackFrame->psr, exceptionStackFrame->pc, exceptionStackFrame->sp,
exceptionStackFrame->regs);
int temp = 0;
switch(exceptionStackFrame->code){
case YALNIX_FORK:
TracePrintf(0, "calling kernel Fork()");
break;
case YALNIX_EXEC:
KernelExec((char *)exceptionStackFrame->regs[1], (char **)exceptionStackFrame->regs[2], exceptionStackFrame);
break;
default:
break;
}
}
void TrapKernel(UserContext *user_context) {
TracePrintf(TRACE_LEVEL_FUNCTION_INFO, ">>> TrapKernel(%p)\n", user_context);
int rc;
// Call approriate syscall based on code
switch(user_context->code){
case YALNIX_DELAY:
rc = KernelDelay(user_context->regs[0], user_context);
break;
case YALNIX_FORK:
rc = KernelFork(user_context);
break;
case YALNIX_GETPID:
rc = KernelGetPid();
break;
case YALNIX_EXEC:
rc = KernelExec((char *) user_context->regs[0],
(char **) user_context->regs[1], user_context);
break;
case YALNIX_WAIT:
rc = KernelWait((int *)user_context->regs[0], user_context);
break;
case YALNIX_EXIT:
KernelExit(user_context->regs[0], user_context);
break;
case YALNIX_BRK:
rc = KernelBrk((void *) user_context->regs[0]);
break;
case YALNIX_TTY_READ:
rc = KernelTtyRead(user_context->regs[0], (void *) user_context->regs[1],
user_context->regs[2], user_context);
break;
case YALNIX_TTY_WRITE:
rc = KernelTtyWrite(user_context->regs[0], (void *) user_context->regs[1],
user_context->regs[2], user_context);
break;
case YALNIX_PIPE_INIT:
rc = KernelPipeInit((int *) user_context->regs[0]);
break;
case YALNIX_PIPE_READ:
rc = KernelPipeRead(user_context->regs[0], (void *) user_context->regs[1],
user_context->regs[2], user_context);
break;
case YALNIX_PIPE_WRITE:
rc = KernelPipeWrite(user_context->regs[0], (void *) user_context->regs[1],
user_context->regs[2], user_context);
break;
case YALNIX_LOCK_INIT:
rc = KernelLockInit((int *) user_context->regs[0]);
break;
case YALNIX_LOCK_ACQUIRE:
rc = KernelAcquire(user_context->regs[0], user_context);
break;
case YALNIX_LOCK_RELEASE:
rc = KernelRelease(user_context->regs[0]);
break;
case YALNIX_CVAR_INIT:
rc = KernelCvarInit((int *) user_context->regs[0]);
break;
case YALNIX_CVAR_SIGNAL:
rc = KernelCvarSignal(user_context->regs[0]);
break;
case YALNIX_CVAR_BROADCAST:
rc = KernelCvarBroadcast(user_context->regs[0]);
break;
case YALNIX_CVAR_WAIT:
rc = KernelCvarWait(user_context->regs[0], user_context->regs[1], user_context);
break;
case YALNIX_RECLAIM:
rc = KernelReclaim(user_context->regs[0]);
break;
default:
TracePrintf(TRACE_LEVEL_NON_TERMINAL_PROBLEM, "TrapKernel: Code %d undefined\n");
KernelExit(ERROR, user_context);
rc = ERROR;
break;
}
user_context->regs[0] = rc;
TracePrintf(TRACE_LEVEL_FUNCTION_INFO, "<<< TrapKernel() rc=%d\n", rc);
}
