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8352948: Remove leftover runtime_x86_32.cpp after 32-bit x86 removal

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Reviewed-by: stefank, kvn
This commit is contained in:
Aleksey Shipilev 2025-03-26 19:45:24 +00:00
parent 5672a934fa
commit e83cccfed4
1 changed files with 0 additions and 332 deletions
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332
src/hotspot/cpu/x86/runtime_x86_32.cpp
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@ -1,332 +0,0 @@
/*
* Copyright (c) 1998, 2025, 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.
*
*/
#ifdef COMPILER2
#include "asm/macroAssembler.hpp"
#include "asm/macroAssembler.inline.hpp"
#include "code/vmreg.hpp"
#include "compiler/oopMap.hpp"
#include "interpreter/interpreter.hpp"
#include "memory/resourceArea.hpp"
#include "opto/runtime.hpp"
#include "runtime/sharedRuntime.hpp"
#include "runtime/stubRoutines.hpp"
#include "runtime/vframeArray.hpp"
#include "utilities/globalDefinitions.hpp"
#include "vmreg_x86.inline.hpp"
#endif
#define __ masm->
//------------------------------generate_uncommon_trap_blob--------------------
UncommonTrapBlob* OptoRuntime::generate_uncommon_trap_blob() {
// allocate space for the code
ResourceMark rm;
// setup code generation tools
const char* name = OptoRuntime::stub_name(OptoStubId::uncommon_trap_id);
CodeBuffer buffer(name, 512, 512);
MacroAssembler* masm = new MacroAssembler(&buffer);
enum frame_layout {
arg0_off, // thread sp + 0 // Arg location for
arg1_off, // unloaded_class_index sp + 1 // calling C
arg2_off, // exec_mode sp + 2
// The frame sender code expects that rbp will be in the "natural" place and
// will override any oopMap setting for it. We must therefore force the layout
// so that it agrees with the frame sender code.
rbp_off, // callee saved register sp + 3
return_off, // slot for return address sp + 4
framesize
};
address start = __ pc();
// Push self-frame.
__ subptr(rsp, return_off*wordSize); // Epilog!
// rbp, is an implicitly saved callee saved register (i.e. the calling
// convention will save restore it in prolog/epilog) Other than that
// there are no callee save registers no that adapter frames are gone.
__ movptr(Address(rsp, rbp_off*wordSize), rbp);
// Clear the floating point exception stack
__ empty_FPU_stack();
// set last_Java_sp
__ get_thread(rdx);
__ set_last_Java_frame(rdx, noreg, noreg, nullptr, noreg);
// Call C code. Need thread but NOT official VM entry
// crud. We cannot block on this call, no GC can happen. Call should
// capture callee-saved registers as well as return values.
__ movptr(Address(rsp, arg0_off*wordSize), rdx);
// argument already in ECX
__ movl(Address(rsp, arg1_off*wordSize),rcx);
__ movl(Address(rsp, arg2_off*wordSize), Deoptimization::Unpack_uncommon_trap);
__ call(RuntimeAddress(CAST_FROM_FN_PTR(address, Deoptimization::uncommon_trap)));
// Set an oopmap for the call site
OopMapSet *oop_maps = new OopMapSet();
OopMap* map = new OopMap( framesize, 0 );
// No oopMap for rbp, it is known implicitly
oop_maps->add_gc_map( __ pc()-start, map);
__ get_thread(rcx);
__ reset_last_Java_frame(rcx, false);
// Load UnrollBlock into EDI
__ movptr(rdi, rax);
#ifdef ASSERT
{ Label L;
__ cmpptr(Address(rdi, Deoptimization::UnrollBlock::unpack_kind_offset()),
(int32_t)Deoptimization::Unpack_uncommon_trap);
__ jcc(Assembler::equal, L);
__ stop("OptoRuntime::generate_uncommon_trap_blob: expected Unpack_uncommon_trap");
__ bind(L);
}
#endif
// Pop all the frames we must move/replace.
//
// Frame picture (youngest to oldest)
// 1: self-frame (no frame link)
// 2: deopting frame (no frame link)
// 3: caller of deopting frame (could be compiled/interpreted).
// Pop self-frame. We have no frame, and must rely only on EAX and ESP.
__ addptr(rsp,(framesize-1)*wordSize); // Epilog!
// Pop deoptimized frame
__ movl2ptr(rcx, Address(rdi,Deoptimization::UnrollBlock::size_of_deoptimized_frame_offset()));
__ addptr(rsp, rcx);
// sp should be pointing at the return address to the caller (3)
// Pick up the initial fp we should save
// restore rbp before stack bang because if stack overflow is thrown it needs to be pushed (and preserved)
__ movptr(rbp, Address(rdi, Deoptimization::UnrollBlock::initial_info_offset()));
#ifdef ASSERT
// Compilers generate code that bang the stack by as much as the
// interpreter would need. So this stack banging should never
// trigger a fault. Verify that it does not on non product builds.
__ movl(rbx, Address(rdi ,Deoptimization::UnrollBlock::total_frame_sizes_offset()));
__ bang_stack_size(rbx, rcx);
#endif
// Load array of frame pcs into ECX
__ movl(rcx,Address(rdi,Deoptimization::UnrollBlock::frame_pcs_offset()));
__ pop(rsi); // trash the pc
// Load array of frame sizes into ESI
__ movptr(rsi,Address(rdi,Deoptimization::UnrollBlock::frame_sizes_offset()));
Address counter(rdi, Deoptimization::UnrollBlock::counter_temp_offset());
__ movl(rbx, Address(rdi, Deoptimization::UnrollBlock::number_of_frames_offset()));
__ movl(counter, rbx);
// Now adjust the caller's stack to make up for the extra locals
// but record the original sp so that we can save it in the skeletal interpreter
// frame and the stack walking of interpreter_sender will get the unextended sp
// value and not the "real" sp value.
Address sp_temp(rdi, Deoptimization::UnrollBlock::sender_sp_temp_offset());
__ movptr(sp_temp, rsp);
__ movl(rbx, Address(rdi, Deoptimization::UnrollBlock::caller_adjustment_offset()));
__ subptr(rsp, rbx);
// Push interpreter frames in a loop
Label loop;
__ bind(loop);
__ movptr(rbx, Address(rsi, 0)); // Load frame size
__ subptr(rbx, 2*wordSize); // we'll push pc and rbp, by hand
__ pushptr(Address(rcx, 0)); // save return address
__ enter(); // save old & set new rbp,
__ subptr(rsp, rbx); // Prolog!
__ movptr(rbx, sp_temp); // sender's sp
// This value is corrected by layout_activation_impl
__ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD );
__ movptr(Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize), rbx); // Make it walkable
__ movptr(sp_temp, rsp); // pass to next frame
__ addptr(rsi, wordSize); // Bump array pointer (sizes)
__ addptr(rcx, wordSize); // Bump array pointer (pcs)
__ decrementl(counter); // decrement counter
__ jcc(Assembler::notZero, loop);
__ pushptr(Address(rcx, 0)); // save final return address
// Re-push self-frame
__ enter(); // save old & set new rbp,
__ subptr(rsp, (framesize-2) * wordSize); // Prolog!
// set last_Java_sp, last_Java_fp
__ get_thread(rdi);
__ set_last_Java_frame(rdi, noreg, rbp, nullptr, noreg);
// Call C code. Need thread but NOT official VM entry
// crud. We cannot block on this call, no GC can happen. Call should
// restore return values to their stack-slots with the new SP.
__ movptr(Address(rsp,arg0_off*wordSize),rdi);
__ movl(Address(rsp,arg1_off*wordSize), Deoptimization::Unpack_uncommon_trap);
__ call(RuntimeAddress(CAST_FROM_FN_PTR(address, Deoptimization::unpack_frames)));
// Set an oopmap for the call site
oop_maps->add_gc_map( __ pc()-start, new OopMap( framesize, 0 ) );
__ get_thread(rdi);
__ reset_last_Java_frame(rdi, true);
// Pop self-frame.
__ leave(); // Epilog!
// Jump to interpreter
__ ret(0);
// -------------
// make sure all code is generated
masm->flush();
return UncommonTrapBlob::create(&buffer, oop_maps, framesize);
}
//------------------------------generate_exception_blob---------------------------
// creates exception blob at the end
// Using exception blob, this code is jumped from a compiled method.
//
// Given an exception pc at a call we call into the runtime for the
// handler in this method. This handler might merely restore state
// (i.e. callee save registers) unwind the frame and jump to the
// exception handler for the nmethod if there is no Java level handler
// for the nmethod.
//
// This code is entered with a jmp.
//
// Arguments:
// rax: exception oop
// rdx: exception pc
//
// Results:
// rax: exception oop
// rdx: exception pc in caller or ???
// destination: exception handler of caller
//
// Note: the exception pc MUST be at a call (precise debug information)
// Only register rax, rdx, rcx are not callee saved.
//
ExceptionBlob* OptoRuntime::generate_exception_blob() {
// Capture info about frame layout
enum layout {
thread_off, // last_java_sp
// The frame sender code expects that rbp will be in the "natural" place and
// will override any oopMap setting for it. We must therefore force the layout
// so that it agrees with the frame sender code.
rbp_off,
return_off, // slot for return address
framesize
};
// allocate space for the code
ResourceMark rm;
// setup code generation tools
const char* name = OptoRuntime::stub_name(OptoStubId::exception_id);
CodeBuffer buffer(name, 512, 512);
MacroAssembler* masm = new MacroAssembler(&buffer);
OopMapSet *oop_maps = new OopMapSet();
address start = __ pc();
__ push(rdx);
__ subptr(rsp, return_off * wordSize); // Prolog!
// rbp, location is implicitly known
__ movptr(Address(rsp,rbp_off *wordSize), rbp);
// Store exception in Thread object. We cannot pass any arguments to the
// handle_exception call, since we do not want to make any assumption
// about the size of the frame where the exception happened in.
__ get_thread(rcx);
__ movptr(Address(rcx, JavaThread::exception_oop_offset()), rax);
__ movptr(Address(rcx, JavaThread::exception_pc_offset()), rdx);
// This call does all the hard work. It checks if an exception handler
// exists in the method.
// If so, it returns the handler address.
// If not, it prepares for stack-unwinding, restoring the callee-save
// registers of the frame being removed.
//
__ movptr(Address(rsp, thread_off * wordSize), rcx); // Thread is first argument
__ set_last_Java_frame(rcx, noreg, noreg, nullptr, noreg);
__ call(RuntimeAddress(CAST_FROM_FN_PTR(address, OptoRuntime::handle_exception_C)));
// No registers to map, rbp is known implicitly
oop_maps->add_gc_map( __ pc() - start, new OopMap( framesize, 0 ));
__ get_thread(rcx);
__ reset_last_Java_frame(rcx, false);
// Restore callee-saved registers
__ movptr(rbp, Address(rsp, rbp_off * wordSize));
__ addptr(rsp, return_off * wordSize); // Epilog!
__ pop(rdx); // Exception pc
// rax: exception handler for given <exception oop/exception pc>
// We have a handler in rax, (could be deopt blob)
// rdx - throwing pc, deopt blob will need it.
__ push(rax);
// Get the exception
__ movptr(rax, Address(rcx, JavaThread::exception_oop_offset()));
// Get the exception pc in case we are deoptimized
__ movptr(rdx, Address(rcx, JavaThread::exception_pc_offset()));
#ifdef ASSERT
__ movptr(Address(rcx, JavaThread::exception_handler_pc_offset()), NULL_WORD);
__ movptr(Address(rcx, JavaThread::exception_pc_offset()), NULL_WORD);
#endif
// Clear the exception oop so GC no longer processes it as a root.
__ movptr(Address(rcx, JavaThread::exception_oop_offset()), NULL_WORD);
__ pop(rcx);
// rax: exception oop
// rcx: exception handler
// rdx: exception pc
__ jmp (rcx);
// -------------
// make sure all code is generated
masm->flush();
return ExceptionBlob::create(&buffer, oop_maps, framesize);
}