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C++ pcRel函数代码示例

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

本文整理汇总了C++中pcRel函数的典型用法代码示例。如果您正苦于以下问题:C++ pcRel函数的具体用法?C++ pcRel怎么用?C++ pcRel使用的例子?那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。



在下文中一共展示了pcRel函数的9个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于我们的系统推荐出更棒的C++代码示例。

示例1: traceexec

static void traceexec (lua_State *L) {
  lu_byte mask = L->hookmask;
  if (mask > LUA_MASKLINE) {  /* instruction-hook set? */
    if (L->hookcount == 0) {
      resethookcount(L);
      luaD_callhook(L, LUA_HOOKCOUNT, -1);
      return;
    }
  }
  if (mask & LUA_MASKLINE) {
    CallInfo *ci = L->ci;
    Proto *p = ci_func(ci)->l.p;
    int newline = getline(p, pcRel(*ci->u.l.pc, p));
    if (!L->hookinit) {
      luaG_inithooks(L);
      return;
    }
    lua_assert(ci->state & CI_HASFRAME);
    if (pcRel(*ci->u.l.pc, p) == 0)  /* tracing may be starting now? */
      ci->u.l.savedpc = *ci->u.l.pc;  /* initialize `savedpc' */
    /* calls linehook when enters a new line or jumps back (loop) */
    if (*ci->u.l.pc <= ci->u.l.savedpc ||
        newline != getline(p, pcRel(ci->u.l.savedpc, p))) {
      luaD_callhook(L, LUA_HOOKLINE, newline);
      ci = L->ci;  /* previous call may reallocate `ci' */
    }
    ci->u.l.savedpc = *ci->u.l.pc;
  }
}
开发者ID:TheWaWaR,项目名称:my-lua5.0,代码行数:29,代码来源:lvm.c


示例2: luaG_traceexec

void luaG_traceexec (lua_State *L) {
  CallInfo *ci = L->ci;
  lu_byte mask = L->hookmask;
  int counthook = (--L->hookcount == 0 && (mask & LUA_MASKCOUNT));
  if (counthook)
    resethookcount(L);  /* reset count */
  else if (!(mask & LUA_MASKLINE))
    return;  /* no line hook and count != 0; nothing to be done */
  if (ci->callstatus & CIST_HOOKYIELD) {  /* called hook last time? */
    ci->callstatus &= ~CIST_HOOKYIELD;  /* erase mark */
    return;  /* do not call hook again (VM yielded, so it did not move) */
  }
  if (counthook)
    luaD_hook(L, LUA_HOOKCOUNT, -1);  /* call count hook */
  if (mask & LUA_MASKLINE) {
    Proto *p = ci_func(ci)->p;
    int npc = pcRel(ci->u.l.savedpc, p);
    int newline = getfuncline(p, npc);
    if (npc == 0 ||  /* call linehook when enter a new function, */
        ci->u.l.savedpc <= L->oldpc ||  /* when jump back (loop), or when */
        newline != getfuncline(p, pcRel(L->oldpc, p)))  /* enter a new line */
      luaD_hook(L, LUA_HOOKLINE, newline);  /* call line hook */
  }
  L->oldpc = ci->u.l.savedpc;
  if (L->status == LUA_YIELD) {  /* did hook yield? */
    if (counthook)
      L->hookcount = 1;  /* undo decrement to zero */
    ci->u.l.savedpc--;  /* undo increment (resume will increment it again) */
    ci->callstatus |= CIST_HOOKYIELD;  /* mark that it yielded */
    ci->func = L->top - 1;  /* protect stack below results */
    luaD_throw(L, LUA_YIELD);
  }
}
开发者ID:chanchancl,项目名称:YDWE,代码行数:33,代码来源:ldebug.c


示例3: currentpc

static int currentpc(lua_State* L, CallInfo* ci)
{
	if (!isLua(ci)) return -1;  /* function is not a Lua function? */
	if (ci == L->ci)
		ci->savedpc = L->savedpc;
	return pcRel(ci->savedpc, ci_func(ci)->l.p);
}
开发者ID:migerh,项目名称:DCPUToolchain,代码行数:7,代码来源:ldebug.c


示例4: currentpc

static int currentpc (CallInfo *ci) {
  if (!isLua(ci)) return -1;  /* function is not a Lua function? */
  if (ci->state & CI_HASFRAME)  /* function has a frame? */
    ci->u.l.savedpc = *ci->u.l.pc;  /* use `pc' from there */
  /* function's pc is saved */
  return pcRel(ci->u.l.savedpc, ci_func(ci)->l.p);
}
开发者ID:gitrider,项目名称:wxsj2,代码行数:7,代码来源:ldebug.c


示例5: traceexec

static void traceexec (lua_State *L, const Instruction *pc) {
  lu_byte mask = L->hookmask;
  const Instruction *oldpc = L->savedpc;
  L->savedpc = pc;
  if ((mask & LUA_MASKCOUNT) && L->hookcount == 0) {
    resethookcount(L);
    luaD_callhook(L, LUA_HOOKCOUNT, -1);
  }
  if (mask & LUA_MASKLINE) {
    Proto *p = ci_func(L->ci)->l.p;
    int npc = pcRel(pc, p);
    int newline = getline(p, npc);
    /* call linehook when enter a new function, when jump back (loop),
       or when enter a new line */
    if (npc == 0 || pc <= oldpc || newline != getline(p, pcRel(oldpc, p)))
      luaD_callhook(L, LUA_HOOKLINE, newline);
  }
}
开发者ID:angryzor,项目名称:luajit-tilepro64,代码行数:18,代码来源:lvm.c


示例6: traceexec

/* 内部栈跟踪
 * L 虚拟机状态
 */
static void traceexec (lua_State *L) {
  CallInfo *ci = L->ci;                 /* 获取调用链表 */
  lu_byte mask = L->hookmask;           /* hook掩码 */
	/* 如果hook计数等于0,则重新获取hook的数量 */
  int counthook = ((mask & LUA_MASKCOUNT) && L->hookcount == 0);
	/* 如果计数不为空,则重新设置 */
  if (counthook)
    resethookcount(L);  /* reset count */
	
	/* 最后一次调用hook函数 */
  if (ci->callstatus & CIST_HOOKYIELD) {  /* called hook last time? */
		/* 取消hook调用掩码 */
    ci->callstatus &= ~CIST_HOOKYIELD;  /* erase mark */
    return;  /* do not call hook again (VM yielded, so it did not move) */
  }
	
	/* 如果hook计数不为空,则调用hook函数 */
  if (counthook)
    luaD_hook(L, LUA_HOOKCOUNT, -1);  /* call count hook */
	
	/* 行hook */
  if (mask & LUA_MASKLINE) {
    Proto *p = ci_func(ci)->p;
    int npc = pcRel(ci->u.l.savedpc, p);
    int newline = getfuncline(p, npc);
    if (npc == 0 ||  /* call linehook when enter a new function, */
        ci->u.l.savedpc <= L->oldpc ||  /* when jump back (loop), or when */
        newline != getfuncline(p, pcRel(L->oldpc, p)))  /* enter a new line */
      luaD_hook(L, LUA_HOOKLINE, newline);  /* call line hook */
  }
	/* 保存要返回的pc寄存器的值 */
  L->oldpc = ci->u.l.savedpc;
	
	/* 如果虚拟机的状态是挂起 */
  if (L->status == LUA_YIELD) {  /* did hook yield? */
    if (counthook)
      L->hookcount = 1;  /* undo decrement to zero */
    ci->u.l.savedpc--;  /* undo increment (resume will increment it again) */
    ci->callstatus |= CIST_HOOKYIELD;  /* mark that it yielded */
    ci->func = L->top - 1;  /* protect stack below results */
    luaD_throw(L, LUA_YIELD);
  }
}
开发者ID:devilogic,项目名称:xlua,代码行数:46,代码来源:lvm.c


示例7: traceexec

// [@lvm] 检查并调用hook函数
static void traceexec (lua_State *L, const Instruction *pc) {
  lu_byte mask = L->hookmask;
  const Instruction *oldpc = L->savedpc;
  L->savedpc = pc;
  if (mask > LUA_MASKLINE) {  /* instruction-hook set? */
    if (L->hookcount == 0) {
      resethookcount(L);
      luaD_callhook(L, LUA_HOOKCOUNT, -1);
    }
  }
  if (mask & LUA_MASKLINE) {
    Proto *p = ci_func(L->ci)->l.p;
    int npc = pcRel(pc, p);			//now pc
    int newline = getline(p, npc);
    /* call linehook when enter a new function, when jump back (loop),
       or when enter a new line */
	// 看仔细了:`when jump back`,对应pc <= oldpc。这也算newline,所以导致
	// LDT会在同一行停呀停!
    if (npc == 0 || pc <= oldpc || newline != getline(p, pcRel(oldpc, p)))
      luaD_callhook(L, LUA_HOOKLINE, newline);
  }
}
开发者ID:anod221,项目名称:Lua51SourceCodeNote,代码行数:23,代码来源:lvm.c


示例8: traceexec

static void traceexec (lua_State *L) {
  CallInfo *ci = L->ci;
  lu_byte mask = L->hookmask;
  if ((mask & LUA_MASKCOUNT) && L->hookcount == 0) {
    resethookcount(L);
    luaD_hook(L, LUA_HOOKCOUNT, -1);
  }
  if (mask & LUA_MASKLINE) {
    Proto *p = ci_func(ci)->p;
    int npc = pcRel(ci->u.l.savedpc, p);
    int newline = getfuncline(p, npc);
    if (npc == 0 ||  /* call linehook when enter a new function, */
        ci->u.l.savedpc <= L->oldpc ||  /* when jump back (loop), or when */
        newline != getfuncline(p, pcRel(L->oldpc, p)))  /* enter a new line */
      luaD_hook(L, LUA_HOOKLINE, newline);
  }
  L->oldpc = ci->u.l.savedpc;
  if (L->status == LUA_YIELD) {  /* did hook yield? */
    ci->u.l.savedpc--;  /* undo increment (resume will increment it again) */
    luaD_throw(L, LUA_YIELD);
  }
}
开发者ID:alucard-dracula,项目名称:yggdrasil,代码行数:22,代码来源:lvm.c


示例9: currentpc

static int currentpc (CallInfo *ci) {
	lua_assert(isLua(ci));
	return pcRel(ci->u.l.savedpc, ci_func(ci)->p);
}
开发者ID:crazii,项目名称:mameplus,代码行数:4,代码来源:ldebug.c



注:本文中的pcRel函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。


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