Mercurial > hg > graal-jvmci-8
diff src/cpu/x86/vm/jvmciCodeInstaller_x86.cpp @ 21559:be896a1983c0
recast all Graal native code as JVMCI code (JBS:GRAAL-53)
author | Doug Simon <doug.simon@oracle.com> |
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date | Thu, 28 May 2015 15:36:48 +0200 |
parents | src/cpu/x86/vm/graalCodeInstaller_x86.cpp@b8d3f84740c7 |
children | 02fc27dc1da7 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/cpu/x86/vm/jvmciCodeInstaller_x86.cpp Thu May 28 15:36:48 2015 +0200 @@ -0,0 +1,237 @@ +/* + * Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ + +#include "precompiled.hpp" +#include "compiler/disassembler.hpp" +#include "runtime/javaCalls.hpp" +#include "jvmci/jvmciEnv.hpp" +#include "jvmci/jvmciCodeInstaller.hpp" +#include "jvmci/jvmciJavaAccess.hpp" +#include "jvmci/jvmciCompilerToVM.hpp" +#include "jvmci/jvmciRuntime.hpp" +#include "asm/register.hpp" +#include "classfile/vmSymbols.hpp" +#include "code/vmreg.hpp" +#include "vmreg_x86.inline.hpp" + +jint CodeInstaller::pd_next_offset(NativeInstruction* inst, jint pc_offset, oop method) { + if (inst->is_call() || inst->is_jump()) { + assert(NativeCall::instruction_size == (int)NativeJump::instruction_size, "unexpected size"); + return (pc_offset + NativeCall::instruction_size); + } else if (inst->is_mov_literal64()) { + // mov+call instruction pair + jint offset = pc_offset + NativeMovConstReg::instruction_size; + u_char* call = (u_char*) (_instructions->start() + offset); + if (call[0] == Assembler::REX_B) { + offset += 1; /* prefix byte for extended register R8-R15 */ + call++; + } + assert(call[0] == 0xFF, "expected call"); + offset += 2; /* opcode byte + modrm byte */ + return (offset); + } else if (inst->is_call_reg()) { + // the inlined vtable stub contains a "call register" instruction + assert(method != NULL, "only valid for virtual calls"); + return (pc_offset + ((NativeCallReg *) inst)->next_instruction_offset()); + } else if (inst->is_cond_jump()) { + address pc = (address) (inst); + return pc_offset + (jint) (Assembler::locate_next_instruction(pc) - pc); + } else { + fatal("unsupported type of instruction for call site"); + return 0; + } +} + +void CodeInstaller::pd_patch_OopConstant(int pc_offset, Handle& constant) { + address pc = _instructions->start() + pc_offset; + Handle obj = HotSpotObjectConstantImpl::object(constant); + jobject value = JNIHandles::make_local(obj()); + if (HotSpotObjectConstantImpl::compressed(constant)) { +#ifdef _LP64 + address operand = Assembler::locate_operand(pc, Assembler::narrow_oop_operand); + int oop_index = _oop_recorder->find_index(value); + _instructions->relocate(pc, oop_Relocation::spec(oop_index), Assembler::narrow_oop_operand); + TRACE_jvmci_3("relocating (narrow oop constant) at %p/%p", pc, operand); +#else + fatal("compressed oop on 32bit"); +#endif + } else { + address operand = Assembler::locate_operand(pc, Assembler::imm_operand); + *((jobject*) operand) = value; + _instructions->relocate(pc, oop_Relocation::spec_for_immediate(), Assembler::imm_operand); + TRACE_jvmci_3("relocating (oop constant) at %p/%p", pc, operand); + } +} + +void CodeInstaller::pd_patch_DataSectionReference(int pc_offset, int data_offset) { + address pc = _instructions->start() + pc_offset; + + address operand = Assembler::locate_operand(pc, Assembler::disp32_operand); + address next_instruction = Assembler::locate_next_instruction(pc); + address dest = _constants->start() + data_offset; + + long disp = dest - next_instruction; + assert(disp == (jint) disp, "disp doesn't fit in 32 bits"); + *((jint*) operand) = (jint) disp; + + _instructions->relocate(pc, section_word_Relocation::spec((address) dest, CodeBuffer::SECT_CONSTS), Assembler::disp32_operand); + TRACE_jvmci_3("relocating at %p/%p with destination at %p (%d)", pc, operand, dest, data_offset); +} + +void CodeInstaller::pd_relocate_CodeBlob(CodeBlob* cb, NativeInstruction* inst) { + if (cb->is_nmethod()) { + nmethod* nm = (nmethod*) cb; + nativeJump_at((address)inst)->set_jump_destination(nm->verified_entry_point()); + } else { + nativeJump_at((address)inst)->set_jump_destination(cb->code_begin()); + } + _instructions->relocate((address)inst, runtime_call_Relocation::spec(), Assembler::call32_operand); +} + +void CodeInstaller::pd_relocate_ForeignCall(NativeInstruction* inst, jlong foreign_call_destination) { + 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 { + fatal("unsupported relocation for foreign call"); + } + + TRACE_jvmci_3("relocating (foreign call) at %p", inst); +} + +void CodeInstaller::pd_relocate_JavaMethod(oop hotspot_method, jint pc_offset) { +#ifdef ASSERT + Method* method = NULL; + // we need to check, this might also be an unresolved method + if (hotspot_method->is_a(HotSpotResolvedJavaMethodImpl::klass())) { + method = getMethodFromHotSpotMethod(hotspot_method); + } +#endif + switch (_next_call_type) { + case INLINE_INVOKE: + break; + case INVOKEVIRTUAL: + case INVOKEINTERFACE: { + assert(method == NULL || !method->is_static(), "cannot call static method with invokeinterface"); + + NativeCall* call = nativeCall_at(_instructions->start() + pc_offset); + call->set_destination(SharedRuntime::get_resolve_virtual_call_stub()); + _instructions->relocate(call->instruction_address(), + virtual_call_Relocation::spec(_invoke_mark_pc), + Assembler::call32_operand); + break; + } + case INVOKESTATIC: { + assert(method == NULL || method->is_static(), "cannot call non-static method with invokestatic"); + + NativeCall* call = nativeCall_at(_instructions->start() + pc_offset); + call->set_destination(SharedRuntime::get_resolve_static_call_stub()); + _instructions->relocate(call->instruction_address(), + relocInfo::static_call_type, Assembler::call32_operand); + break; + } + case INVOKESPECIAL: { + assert(method == NULL || !method->is_static(), "cannot call static method with invokespecial"); + NativeCall* call = nativeCall_at(_instructions->start() + pc_offset); + call->set_destination(SharedRuntime::get_resolve_opt_virtual_call_stub()); + _instructions->relocate(call->instruction_address(), + relocInfo::opt_virtual_call_type, Assembler::call32_operand); + break; + } + default: + break; + } +} + +static void relocate_poll_near(address pc) { + NativeInstruction* ni = nativeInstruction_at(pc); + int32_t* disp = (int32_t*) Assembler::locate_operand(pc, Assembler::disp32_operand); + int32_t offset = *disp; // The Java code installed the polling page offset into the disp32 operand + intptr_t new_disp = (intptr_t) (os::get_polling_page() + offset) - (intptr_t) ni; + *disp = (int32_t)new_disp; +} + + +void CodeInstaller::pd_relocate_poll(address pc, jint mark) { + switch (mark) { + case POLL_NEAR: { + relocate_poll_near(pc); + _instructions->relocate(pc, relocInfo::poll_type, Assembler::disp32_operand); + break; + } + case POLL_FAR: + // This is a load from a register so there is no relocatable operand. + // We just have to ensure that the format is not disp32_operand + // so that poll_Relocation::fix_relocation_after_move does the right + // thing (i.e. ignores this relocation record) + _instructions->relocate(pc, relocInfo::poll_type, Assembler::imm_operand); + break; + case POLL_RETURN_NEAR: { + relocate_poll_near(pc); + _instructions->relocate(pc, relocInfo::poll_return_type, Assembler::disp32_operand); + break; + } + case POLL_RETURN_FAR: + // see comment above for POLL_FAR + _instructions->relocate(pc, relocInfo::poll_return_type, Assembler::imm_operand); + break; + default: + fatal("invalid mark value"); + break; + } +} + +// convert JVMCI register indices (as used in oop maps) to HotSpot registers +VMReg CodeInstaller::get_hotspot_reg(jint jvmci_reg) { + if (jvmci_reg < RegisterImpl::number_of_registers) { + return as_Register(jvmci_reg)->as_VMReg(); + } else { + jint floatRegisterNumber = jvmci_reg - RegisterImpl::number_of_registers; + if (floatRegisterNumber < XMMRegisterImpl::number_of_registers) { + return as_XMMRegister(floatRegisterNumber)->as_VMReg(); + } + ShouldNotReachHere(); + return NULL; + } +} + +bool CodeInstaller::is_general_purpose_reg(VMReg hotspotRegister) { + return !(hotspotRegister->is_FloatRegister() || hotspotRegister->is_XMMRegister()); +}