int
main(int argc, char *argv[])
{
setJump();
if (argc > 1)
recur(2);
doJump();
printf("Back at main\n");
exit(EXIT_SUCCESS);
}
int main(int argc, char *argv[])
{
int nvar;
register int rvar;
volatile int vvar;
nvar = 111;
rvar = 222;
vvar = 333;
if (setjmp(env) == 0) {
nvar = 777;
rvar = 888;
vvar = 999;
doJump(nvar, rvar, vvar);
} else {
printf("After longjmp(): nvar=%d rvar=%d vvar=%d\n", nvar, rvar, vvar);
}
exit(EXIT_SUCCESS);
}
int main(int argc, char *argv[])
{
int nvar;
register int rvar; /* Allocated in register if possible */
volatile int vvar;
nvar = 111;
rvar = 222;
vvar = 333;
if (setjmp(env) == 0) { /* Code executed after setjmp() */
nvar = 777;
rvar = 888;
vvar = 999;
doJump(nvar, rvar, vvar);
} else { /* Code executed after longjmp() */
printf("After longjmp(): nvar=%d rvar=%d vvar=%d\n", nvar, rvar, vvar);
}
exit(EXIT_SUCCESS);
}
int main(int argc, char** argv) {
int nvar;
register int rvar; // Allocate to register if it can
volatile int vvar;
nvar = 111;
rvar = 222;
vvar = 333;
/* Run afger setjmp() */
if (setjmp(env) == 0) {
nvar = 777;
rvar = 888;
vvar = 999;
doJump(nvar, rvar, vvar);
}else {
printf("After longjmp(): nvar=%d, rvar=%d, vvar=%d\n", nvar, rvar, vvar);
}
exit(EXIT_SUCCESS);
}
/*
* setjmp调用只能再无需临时存储的表达式中使用，例如:
* s = setjmp(env); //这个语句是不符合标准的,setjmp只能再下面一些语境中使用:
* 1.if switch while等控制表达式
* 2.一元操作符!
* 3.比较操作符
* 4.独立的函数调用
*
* 注意:
* longjmp调用不能跳转到一个已经返回的函数中 SUSv3规定: 如果从嵌套的信号处理器中调用longjmp函数，则该程序是行为
* 未定义的
*
* 编译器优化导致longjmp操作过程中经过优化的变量被赋以错误值，解决办法就是设置这些变量为voliate．告诉编译器不对其进行
* 优化
*/
int main(int argc,char *argv[])
{
int nvar;
register int rvar;
volatile int vvar;
nvar = 111;
rvar = 222;
vvar = 333;
if(setjmp(env) == 0) {
nvar = 777;
rvar = 888;
vvar = 999;
doJump(nvar,rvar,vvar);
} else {
printf("after longjmp(): nvar=%d rvar=%d vvar=%d\n",nvar,rvar,vvar);
}
exit(EXIT_SUCCESS);
//int ret = setjmp(env); //WARN
/*
switch(setjmp(env)) {
case 0:
printf("Calling f1() after initial setjmp()\n");
f1(argc);
break;
case 1:
printf("We jumped back from f1()\n");
break;
case 2:
printf("We jumped back from f2()\n");
break;
}
*/
}
int main(int argc, char *argv[])
{
int nvar;
register int rvar; // allocate in register if possible
volatile int vvar; // allocate in see text
nvar = 111;
rvar = 222;
vvar = 333;
// code executed after setjmp()
if (setjmp(env) == 0) {
nvar = 777;
rvar = 888;
vvar = 999;
doJump(nvar, rvar, vvar);
// coming from doJump
} else {
printf("After longjmp(): nvar=%d, rvar=%d, vvar=%d\n", nvar, rvar, vvar);
}
exit(EXIT_SUCCESS);
}
void Player::step(float frame, float time) {
this->time = time;
applyImpulse(frame);
run->apply(skeleton.get(), time, true);
skeleton->getRootBone()->x = X_OFFSET;
skeleton->getRootBone()->y = Y_OFFSET;
skeleton->updateWorldTransform();
b2Vec2 speed = body->GetLinearVelocity();
sync();
if(speed.y > 1 && !isGrounded()) {
setState(PlayerFalling);
} else if(state == PlayerFalling && speed.y > -0.1){
setState(PlayerStanding);
} else if(state == PlayerPreJump){
if(time > jumpStart + 0.05)
doJump();
} else if(state == PlayerRunning && (impulse == ImpulseNone || impulse == ImpulseBoth) && speed.x < 0.1 && speed.x > -0.1){
setState(PlayerStanding);
}
}
void Interpreter::Start() {
// initialization
method = GetFrame()->GetMethod();
currentBytecodes = method->GetBytecodes();
void* loopTargets[] = {
&&LABEL_BC_HALT,
&&LABEL_BC_DUP,
&&LABEL_BC_PUSH_LOCAL,
&&LABEL_BC_PUSH_ARGUMENT,
&&LABEL_BC_PUSH_FIELD,
&&LABEL_BC_PUSH_BLOCK,
&&LABEL_BC_PUSH_CONSTANT,
&&LABEL_BC_PUSH_GLOBAL,
&&LABEL_BC_POP,
&&LABEL_BC_POP_LOCAL,
&&LABEL_BC_POP_ARGUMENT,
&&LABEL_BC_POP_FIELD,
&&LABEL_BC_SEND,
&&LABEL_BC_SUPER_SEND,
&&LABEL_BC_RETURN_LOCAL,
&&LABEL_BC_RETURN_NON_LOCAL,
&&LABEL_BC_JUMP_IF_FALSE,
&&LABEL_BC_JUMP_IF_TRUE,
&&LABEL_BC_JUMP
};
goto *loopTargets[currentBytecodes[bytecodeIndexGlobal]];
//
// THIS IS THE former interpretation loop
LABEL_BC_HALT:
PROLOGUE(1);
return; // handle the halt bytecode
LABEL_BC_DUP:
PROLOGUE(1);
doDup();
DISPATCH_NOGC();
LABEL_BC_PUSH_LOCAL:
PROLOGUE(3);
doPushLocal(bytecodeIndexGlobal - 3);
DISPATCH_NOGC();
LABEL_BC_PUSH_ARGUMENT:
PROLOGUE(3);
doPushArgument(bytecodeIndexGlobal - 3);
DISPATCH_NOGC();
LABEL_BC_PUSH_FIELD:
PROLOGUE(2);
doPushField(bytecodeIndexGlobal - 2);
DISPATCH_NOGC();
LABEL_BC_PUSH_BLOCK:
PROLOGUE(2);
doPushBlock(bytecodeIndexGlobal - 2);
DISPATCH_GC();
LABEL_BC_PUSH_CONSTANT:
PROLOGUE(2);
doPushConstant(bytecodeIndexGlobal - 2);
DISPATCH_NOGC();
LABEL_BC_PUSH_GLOBAL:
PROLOGUE(2);
doPushGlobal(bytecodeIndexGlobal - 2);
DISPATCH_GC();
LABEL_BC_POP:
PROLOGUE(1);
doPop();
DISPATCH_NOGC();
LABEL_BC_POP_LOCAL:
PROLOGUE(3);
doPopLocal(bytecodeIndexGlobal - 3);
DISPATCH_NOGC();
LABEL_BC_POP_ARGUMENT:
PROLOGUE(3);
doPopArgument(bytecodeIndexGlobal - 3);
DISPATCH_NOGC();
LABEL_BC_POP_FIELD:
PROLOGUE(2);
doPopField(bytecodeIndexGlobal - 2);
DISPATCH_NOGC();
LABEL_BC_SEND:
PROLOGUE(2);
doSend(bytecodeIndexGlobal - 2);
DISPATCH_GC();
LABEL_BC_SUPER_SEND:
PROLOGUE(2);
doSuperSend(bytecodeIndexGlobal - 2);
DISPATCH_GC();
LABEL_BC_RETURN_LOCAL:
PROLOGUE(1);
doReturnLocal();
DISPATCH_NOGC();
LABEL_BC_RETURN_NON_LOCAL:
PROLOGUE(1);
doReturnNonLocal();
DISPATCH_NOGC();
LABEL_BC_JUMP_IF_FALSE:
PROLOGUE(5);
doJumpIfFalse(bytecodeIndexGlobal - 5);
DISPATCH_NOGC();
LABEL_BC_JUMP_IF_TRUE:
PROLOGUE(5);
doJumpIfTrue(bytecodeIndexGlobal - 5);
DISPATCH_NOGC();
LABEL_BC_JUMP:
PROLOGUE(5);
doJump(bytecodeIndexGlobal - 5);
DISPATCH_NOGC();
}
VMFrame* Interpreter::PushNewFrame(VMMethod* method) {
SetFrame(GetUniverse()->NewFrame(GetFrame(), method));
return GetFrame();
}
void Interpreter::doJumpIfTrue(long bytecodeIndex) {
vm_oop_t value = GetFrame()->Pop();
if (value == load_ptr(trueObject))
doJump(bytecodeIndex);
}
static COLDFIRE_DISPATCH_FN(morphJSR) {doJump(info->instruction, info->thisPC, True, info->instrSize, info->type);}