void CodeInstaller::pd_relocate_ForeignCall(NativeInstruction* inst, jlong foreign_call_destination, TRAPS) { address pc = (address) inst; if (inst->is_call()) { // NOTE: for call without a mov, the offset must fit a 32-bit immediate // see also CompilerToVM.getMaxCallTargetOffset() NativeCall* call = nativeCall_at(pc); call->set_destination((address) foreign_call_destination); _instructions->relocate(call->instruction_address(), runtime_call_Relocation::spec(), Assembler::call32_operand); } else if (inst->is_mov_literal64()) { NativeMovConstReg* mov = nativeMovConstReg_at(pc); mov->set_data((intptr_t) foreign_call_destination); _instructions->relocate(mov->instruction_address(), runtime_call_Relocation::spec(), Assembler::imm_operand); } else if (inst->is_jump()) { NativeJump* jump = nativeJump_at(pc); jump->set_jump_destination((address) foreign_call_destination); _instructions->relocate(jump->instruction_address(), runtime_call_Relocation::spec(), Assembler::call32_operand); } else if (inst->is_cond_jump()) { address old_dest = nativeGeneralJump_at(pc)->jump_destination(); address disp = Assembler::locate_operand(pc, Assembler::call32_operand); *(jint*) disp += ((address) foreign_call_destination) - old_dest; _instructions->relocate(pc, runtime_call_Relocation::spec(), Assembler::call32_operand); } else { JVMCI_ERROR("unsupported relocation for foreign call"); } TRACE_jvmci_3("relocating (foreign call) at " PTR_FORMAT, p2i(inst)); }
// Code for unit testing implementation of NativeJump class void NativeJump::test() { #ifdef ASSERT ResourceMark rm; CodeBuffer cb("test", 100, 100); MacroAssembler* a = new MacroAssembler(&cb); NativeJump* nj; uint idx; int offsets[] = { 0x0, 0xffffffff, 0x7fffffff, 0x80000000, 4096, 4097, 0x20, 0x4000, }; VM_Version::allow_all(); AddressLiteral al(0x7fffbbbb, relocInfo::external_word_type); a->sethi(al, I3); a->jmpl(I3, al.low10(), G0, RelocationHolder::none); a->delayed()->nop(); a->sethi(al, I3); a->jmpl(I3, al.low10(), L3, RelocationHolder::none); a->delayed()->nop(); nj = nativeJump_at( cb.insts_begin() ); nj->print(); nj = nativeJump_at( nj->next_instruction_address() ); for (idx = 0; idx < ARRAY_SIZE(offsets); idx++) { nj->set_jump_destination( nj->instruction_address() + offsets[idx] ); assert(nj->jump_destination() == (nj->instruction_address() + offsets[idx]), "check unit test"); nj->print(); } VM_Version::revert(); #endif // ASSERT }
void CodeInstaller::pd_relocate_ForeignCall(NativeInstruction* inst, jlong foreign_call_destination, TRAPS) { address pc = (address) inst; if (inst->is_call()) { NativeCall* call = nativeCall_at(pc); call->set_destination((address) foreign_call_destination); _instructions->relocate(call->instruction_address(), runtime_call_Relocation::spec()); } else if (inst->is_sethi()) { NativeJump* jump = nativeJump_at(pc); jump->set_jump_destination((address) foreign_call_destination); _instructions->relocate(jump->instruction_address(), runtime_call_Relocation::spec()); } else { JVMCI_ERROR("unknown call or jump instruction at " PTR_FORMAT, p2i(pc)); } TRACE_jvmci_3("relocating (foreign call) at " PTR_FORMAT, p2i(inst)); }
inline void CodeInstaller::pd_relocate_ForeignCall(NativeInstruction* inst, jlong foreign_call_destination) { address pc = (address) inst; if (inst->is_call()) { NativeCall* call = nativeCall_at(pc); call->set_destination((address) foreign_call_destination); _instructions->relocate(call->instruction_address(), runtime_call_Relocation::spec()); } else if (inst->is_sethi()) { NativeJump* jump = nativeJump_at(pc); jump->set_jump_destination((address) foreign_call_destination); _instructions->relocate(jump->instruction_address(), runtime_call_Relocation::spec()); } else { fatal(err_msg("unknown call or jump instruction at %p", pc)); } TRACE_graal_3("relocating (foreign call) at %p", inst); }