opgetvar4m.nc

来自「tinyos最新版」· NC 代码 · 共 106 行

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/*
 * Authors:   Philip Levis <[e-mail]>
 * History:   Apr 13, 2003         Inception.
 *
 */

/**
 * @author Philip Levis <[e-mail]>
 */


includes Mate;

module OPgetvar4M {
  provides interface MateBytecode;
  uses {
    interface MateError as Error;
    interface MateLocks as Locks;
    interface MateTypes as Types;
    interface MateStacks as Stacks;
  }
}

implementation {
  MateStackVariable heap[MATE_HEAPSIZE];

  command result_t MateBytecode.execute(uint8_t instr,
					    MateContext* context) {
    uint8_t arg = instr & 0xf;
    if (!call Locks.isHeldBy(arg, context)) {
      call Error.error(context, MATE_ERROR_INVALID_ACCESS);
      return FAIL;
    }
    else {
      dbg(DBG_USR1, "VM (%i): Executing getvar (%i).\n", (int)context->which, (int)arg);
      call Stacks.pushOperand(context, &heap[arg]);
      return SUCCESS;
    }
  }
}