void Relocation::pd_set_call_destination(address x) {
NativeInstruction* ni = nativeInstruction_at(addr());
if (ni->is_call()) {
nativeCall_at(addr())->set_destination(x);
} else if (ni->is_jump()) {
NativeJump* nj = nativeJump_at(addr());
// Unresolved jumps are recognized by a destination of -1
// However 64bit can't actually produce such an address
// and encodes a jump to self but jump_destination will
// return a -1 as the signal. We must not relocate this
// jmp or the ic code will not see it as unresolved.
if (nj->jump_destination() == (address) -1) {
x = addr(); // jump to self
}
nj->set_jump_destination(x);
} else if (ni->is_cond_jump()) {
// %%%% kludge this, for now, until we get a jump_destination method
address old_dest = nativeGeneralJump_at(addr())->jump_destination();
address disp = Assembler::locate_operand(addr(), Assembler::call32_operand);
*(jint*)disp += (x - old_dest);
} else if (ni->is_mov_literal64()) {
((NativeMovConstReg*)ni)->set_data((intptr_t)x);
} else {
ShouldNotReachHere();
}
}
address Relocation::pd_call_destination() {
NativeInstruction* ni = nativeInstruction_at(addr());
if (ni->is_call())
return nativeCall_at(addr())->destination();
#if 0
else if (ni->is_jump())
return nativeJump_at(addr())->jump_destination();
else if (ni->is_cond_jump())
return nativeGeneralJump_at(addr())->jump_destination();
else
#endif /* excise for now */
{ ShouldNotReachHere(); return NULL; }
}
void Relocation::pd_set_call_destination(address x, intptr_t off) {
NativeInstruction* ni = nativeInstruction_at(addr());
if (ni->is_call())
nativeCall_at(addr())->set_destination(x);
#if 0 /* excise for now */
else if (ni->is_jump())
nativeJump_at(addr())->set_jump_destination(x);
else if (ni->is_cond_jump()) {
// %%%% kludge this, for now, until we get a jump_destination method
address old_dest = nativeGeneralJump_at(addr())->jump_destination();
address disp = Assembler::locate_operand(addr(), Assembler::call32_operand);
*(jint*)disp += (x - old_dest);
}
#endif /* excise for now */
else
{ ShouldNotReachHere(); }
}
address Relocation::pd_call_destination(address orig_addr) {
intptr_t adj = 0;
if (orig_addr != NULL) {
// We just moved this call instruction from orig_addr to addr().
// This means its target will appear to have grown by addr() - orig_addr.
adj = -( addr() - orig_addr );
}
NativeInstruction* ni = nativeInstruction_at(addr());
if (ni->is_call()) {
return nativeCall_at(addr())->destination() + adj;
} else if (ni->is_jump()) {
return nativeJump_at(addr())->jump_destination() + adj;
} else if (ni->is_cond_jump()) {
return nativeGeneralJump_at(addr())->jump_destination() + adj;
} else if (ni->is_mov_literal64()) {
return (address) ((NativeMovConstReg*)ni)->data();
} else {
ShouldNotReachHere();
return NULL;
}
}
