aoqi@0: /*
aoqi@0:  * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  *
aoqi@0:  */
aoqi@0: 
aoqi@0: #include "precompiled.hpp"
aoqi@0: #include "c1/c1_FrameMap.hpp"
aoqi@0: #include "c1/c1_LIR.hpp"
aoqi@0: #include "runtime/sharedRuntime.hpp"
aoqi@0: #include "vmreg_x86.inline.hpp"
aoqi@0: 
aoqi@0: const int FrameMap::pd_c_runtime_reserved_arg_size = 0;
aoqi@0: 
aoqi@0: LIR_Opr FrameMap::map_to_opr(BasicType type, VMRegPair* reg, bool) {
aoqi@0:   LIR_Opr opr = LIR_OprFact::illegalOpr;
aoqi@0:   VMReg r_1 = reg->first();
aoqi@0:   VMReg r_2 = reg->second();
aoqi@0:   if (r_1->is_stack()) {
aoqi@0:     // Convert stack slot to an SP offset
aoqi@0:     // The calling convention does not count the SharedRuntime::out_preserve_stack_slots() value
aoqi@0:     // so we must add it in here.
aoqi@0:     int st_off = (r_1->reg2stack() + SharedRuntime::out_preserve_stack_slots()) * VMRegImpl::stack_slot_size;
aoqi@0:     opr = LIR_OprFact::address(new LIR_Address(rsp_opr, st_off, type));
aoqi@0:   } else if (r_1->is_Register()) {
aoqi@0:     Register reg = r_1->as_Register();
aoqi@0:     if (r_2->is_Register() && (type == T_LONG || type == T_DOUBLE)) {
aoqi@0:       Register reg2 = r_2->as_Register();
aoqi@0: #ifdef _LP64
aoqi@0:       assert(reg2 == reg, "must be same register");
aoqi@0:       opr = as_long_opr(reg);
aoqi@0: #else
aoqi@0:       opr = as_long_opr(reg2, reg);
aoqi@0: #endif // _LP64
aoqi@0:     } else if (type == T_OBJECT || type == T_ARRAY) {
aoqi@0:       opr = as_oop_opr(reg);
aoqi@0:     } else if (type == T_METADATA) {
aoqi@0:       opr = as_metadata_opr(reg);
aoqi@0:     } else {
aoqi@0:       opr = as_opr(reg);
aoqi@0:     }
aoqi@0:   } else if (r_1->is_FloatRegister()) {
aoqi@0:     assert(type == T_DOUBLE || type == T_FLOAT, "wrong type");
aoqi@0:     int num = r_1->as_FloatRegister()->encoding();
aoqi@0:     if (type == T_FLOAT) {
aoqi@0:       opr = LIR_OprFact::single_fpu(num);
aoqi@0:     } else {
aoqi@0:       opr = LIR_OprFact::double_fpu(num);
aoqi@0:     }
aoqi@0:   } else if (r_1->is_XMMRegister()) {
aoqi@0:     assert(type == T_DOUBLE || type == T_FLOAT, "wrong type");
aoqi@0:     int num = r_1->as_XMMRegister()->encoding();
aoqi@0:     if (type == T_FLOAT) {
aoqi@0:       opr = LIR_OprFact::single_xmm(num);
aoqi@0:     } else {
aoqi@0:       opr = LIR_OprFact::double_xmm(num);
aoqi@0:     }
aoqi@0:   } else {
aoqi@0:     ShouldNotReachHere();
aoqi@0:   }
aoqi@0:   return opr;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: LIR_Opr FrameMap::rsi_opr;
aoqi@0: LIR_Opr FrameMap::rdi_opr;
aoqi@0: LIR_Opr FrameMap::rbx_opr;
aoqi@0: LIR_Opr FrameMap::rax_opr;
aoqi@0: LIR_Opr FrameMap::rdx_opr;
aoqi@0: LIR_Opr FrameMap::rcx_opr;
aoqi@0: LIR_Opr FrameMap::rsp_opr;
aoqi@0: LIR_Opr FrameMap::rbp_opr;
aoqi@0: 
aoqi@0: LIR_Opr FrameMap::receiver_opr;
aoqi@0: 
aoqi@0: LIR_Opr FrameMap::rsi_oop_opr;
aoqi@0: LIR_Opr FrameMap::rdi_oop_opr;
aoqi@0: LIR_Opr FrameMap::rbx_oop_opr;
aoqi@0: LIR_Opr FrameMap::rax_oop_opr;
aoqi@0: LIR_Opr FrameMap::rdx_oop_opr;
aoqi@0: LIR_Opr FrameMap::rcx_oop_opr;
aoqi@0: 
aoqi@0: LIR_Opr FrameMap::rsi_metadata_opr;
aoqi@0: LIR_Opr FrameMap::rdi_metadata_opr;
aoqi@0: LIR_Opr FrameMap::rbx_metadata_opr;
aoqi@0: LIR_Opr FrameMap::rax_metadata_opr;
aoqi@0: LIR_Opr FrameMap::rdx_metadata_opr;
aoqi@0: LIR_Opr FrameMap::rcx_metadata_opr;
aoqi@0: 
aoqi@0: LIR_Opr FrameMap::long0_opr;
aoqi@0: LIR_Opr FrameMap::long1_opr;
aoqi@0: LIR_Opr FrameMap::fpu0_float_opr;
aoqi@0: LIR_Opr FrameMap::fpu0_double_opr;
aoqi@0: LIR_Opr FrameMap::xmm0_float_opr;
aoqi@0: LIR_Opr FrameMap::xmm0_double_opr;
aoqi@0: 
aoqi@0: #ifdef _LP64
aoqi@0: 
aoqi@0: LIR_Opr  FrameMap::r8_opr;
aoqi@0: LIR_Opr  FrameMap::r9_opr;
aoqi@0: LIR_Opr FrameMap::r10_opr;
aoqi@0: LIR_Opr FrameMap::r11_opr;
aoqi@0: LIR_Opr FrameMap::r12_opr;
aoqi@0: LIR_Opr FrameMap::r13_opr;
aoqi@0: LIR_Opr FrameMap::r14_opr;
aoqi@0: LIR_Opr FrameMap::r15_opr;
aoqi@0: 
aoqi@0: // r10 and r15 can never contain oops since they aren't available to
aoqi@0: // the allocator
aoqi@0: LIR_Opr  FrameMap::r8_oop_opr;
aoqi@0: LIR_Opr  FrameMap::r9_oop_opr;
aoqi@0: LIR_Opr FrameMap::r11_oop_opr;
aoqi@0: LIR_Opr FrameMap::r12_oop_opr;
aoqi@0: LIR_Opr FrameMap::r13_oop_opr;
aoqi@0: LIR_Opr FrameMap::r14_oop_opr;
aoqi@0: 
aoqi@0: LIR_Opr  FrameMap::r8_metadata_opr;
aoqi@0: LIR_Opr  FrameMap::r9_metadata_opr;
aoqi@0: LIR_Opr FrameMap::r11_metadata_opr;
aoqi@0: LIR_Opr FrameMap::r12_metadata_opr;
aoqi@0: LIR_Opr FrameMap::r13_metadata_opr;
aoqi@0: LIR_Opr FrameMap::r14_metadata_opr;
aoqi@0: #endif // _LP64
aoqi@0: 
aoqi@0: LIR_Opr FrameMap::_caller_save_cpu_regs[] = { 0, };
aoqi@0: LIR_Opr FrameMap::_caller_save_fpu_regs[] = { 0, };
aoqi@0: LIR_Opr FrameMap::_caller_save_xmm_regs[] = { 0, };
aoqi@0: 
aoqi@0: XMMRegister FrameMap::_xmm_regs [] = { 0, };
aoqi@0: 
aoqi@0: XMMRegister FrameMap::nr2xmmreg(int rnr) {
aoqi@0:   assert(_init_done, "tables not initialized");
aoqi@0:   return _xmm_regs[rnr];
aoqi@0: }
aoqi@0: 
aoqi@0: //--------------------------------------------------------
aoqi@0: //               FrameMap
aoqi@0: //--------------------------------------------------------
aoqi@0: 
aoqi@0: void FrameMap::initialize() {
aoqi@0:   assert(!_init_done, "once");
aoqi@0: 
aoqi@0:   assert(nof_cpu_regs == LP64_ONLY(16) NOT_LP64(8), "wrong number of CPU registers");
aoqi@0:   map_register(0, rsi);  rsi_opr = LIR_OprFact::single_cpu(0);
aoqi@0:   map_register(1, rdi);  rdi_opr = LIR_OprFact::single_cpu(1);
aoqi@0:   map_register(2, rbx);  rbx_opr = LIR_OprFact::single_cpu(2);
aoqi@0:   map_register(3, rax);  rax_opr = LIR_OprFact::single_cpu(3);
aoqi@0:   map_register(4, rdx);  rdx_opr = LIR_OprFact::single_cpu(4);
aoqi@0:   map_register(5, rcx);  rcx_opr = LIR_OprFact::single_cpu(5);
aoqi@0: 
aoqi@0: #ifndef _LP64
aoqi@0:   // The unallocatable registers are at the end
aoqi@0:   map_register(6, rsp);
aoqi@0:   map_register(7, rbp);
aoqi@0: #else
aoqi@0:   map_register( 6, r8);    r8_opr = LIR_OprFact::single_cpu(6);
aoqi@0:   map_register( 7, r9);    r9_opr = LIR_OprFact::single_cpu(7);
aoqi@0:   map_register( 8, r11);  r11_opr = LIR_OprFact::single_cpu(8);
aoqi@0:   map_register( 9, r13);  r13_opr = LIR_OprFact::single_cpu(9);
aoqi@0:   map_register(10, r14);  r14_opr = LIR_OprFact::single_cpu(10);
aoqi@0:   // r12 is allocated conditionally. With compressed oops it holds
aoqi@0:   // the heapbase value and is not visible to the allocator.
aoqi@0:   map_register(11, r12);  r12_opr = LIR_OprFact::single_cpu(11);
aoqi@0:   // The unallocatable registers are at the end
aoqi@0:   map_register(12, r10);  r10_opr = LIR_OprFact::single_cpu(12);
aoqi@0:   map_register(13, r15);  r15_opr = LIR_OprFact::single_cpu(13);
aoqi@0:   map_register(14, rsp);
aoqi@0:   map_register(15, rbp);
aoqi@0: #endif // _LP64
aoqi@0: 
aoqi@0: #ifdef _LP64
aoqi@0:   long0_opr = LIR_OprFact::double_cpu(3 /*eax*/, 3 /*eax*/);
aoqi@0:   long1_opr = LIR_OprFact::double_cpu(2 /*ebx*/, 2 /*ebx*/);
aoqi@0: #else
aoqi@0:   long0_opr = LIR_OprFact::double_cpu(3 /*eax*/, 4 /*edx*/);
aoqi@0:   long1_opr = LIR_OprFact::double_cpu(2 /*ebx*/, 5 /*ecx*/);
aoqi@0: #endif // _LP64
aoqi@0:   fpu0_float_opr   = LIR_OprFact::single_fpu(0);
aoqi@0:   fpu0_double_opr  = LIR_OprFact::double_fpu(0);
aoqi@0:   xmm0_float_opr   = LIR_OprFact::single_xmm(0);
aoqi@0:   xmm0_double_opr  = LIR_OprFact::double_xmm(0);
aoqi@0: 
aoqi@0:   _caller_save_cpu_regs[0] = rsi_opr;
aoqi@0:   _caller_save_cpu_regs[1] = rdi_opr;
aoqi@0:   _caller_save_cpu_regs[2] = rbx_opr;
aoqi@0:   _caller_save_cpu_regs[3] = rax_opr;
aoqi@0:   _caller_save_cpu_regs[4] = rdx_opr;
aoqi@0:   _caller_save_cpu_regs[5] = rcx_opr;
aoqi@0: 
aoqi@0: #ifdef _LP64
aoqi@0:   _caller_save_cpu_regs[6]  = r8_opr;
aoqi@0:   _caller_save_cpu_regs[7]  = r9_opr;
aoqi@0:   _caller_save_cpu_regs[8]  = r11_opr;
aoqi@0:   _caller_save_cpu_regs[9]  = r13_opr;
aoqi@0:   _caller_save_cpu_regs[10] = r14_opr;
aoqi@0:   _caller_save_cpu_regs[11] = r12_opr;
aoqi@0: #endif // _LP64
aoqi@0: 
aoqi@0: 
aoqi@0:   _xmm_regs[0] = xmm0;
aoqi@0:   _xmm_regs[1] = xmm1;
aoqi@0:   _xmm_regs[2] = xmm2;
aoqi@0:   _xmm_regs[3] = xmm3;
aoqi@0:   _xmm_regs[4] = xmm4;
aoqi@0:   _xmm_regs[5] = xmm5;
aoqi@0:   _xmm_regs[6] = xmm6;
aoqi@0:   _xmm_regs[7] = xmm7;
aoqi@0: 
aoqi@0: #ifdef _LP64
aoqi@0:   _xmm_regs[8]   = xmm8;
aoqi@0:   _xmm_regs[9]   = xmm9;
aoqi@0:   _xmm_regs[10]  = xmm10;
aoqi@0:   _xmm_regs[11]  = xmm11;
aoqi@0:   _xmm_regs[12]  = xmm12;
aoqi@0:   _xmm_regs[13]  = xmm13;
aoqi@0:   _xmm_regs[14]  = xmm14;
aoqi@0:   _xmm_regs[15]  = xmm15;
aoqi@0: #endif // _LP64
aoqi@0: 
aoqi@0:   for (int i = 0; i < 8; i++) {
aoqi@0:     _caller_save_fpu_regs[i] = LIR_OprFact::single_fpu(i);
aoqi@0:   }
aoqi@0: 
aoqi@0:   for (int i = 0; i < nof_caller_save_xmm_regs ; i++) {
aoqi@0:     _caller_save_xmm_regs[i] = LIR_OprFact::single_xmm(i);
aoqi@0:   }
aoqi@0: 
aoqi@0:   _init_done = true;
aoqi@0: 
aoqi@0:   rsi_oop_opr = as_oop_opr(rsi);
aoqi@0:   rdi_oop_opr = as_oop_opr(rdi);
aoqi@0:   rbx_oop_opr = as_oop_opr(rbx);
aoqi@0:   rax_oop_opr = as_oop_opr(rax);
aoqi@0:   rdx_oop_opr = as_oop_opr(rdx);
aoqi@0:   rcx_oop_opr = as_oop_opr(rcx);
aoqi@0: 
aoqi@0:   rsi_metadata_opr = as_metadata_opr(rsi);
aoqi@0:   rdi_metadata_opr = as_metadata_opr(rdi);
aoqi@0:   rbx_metadata_opr = as_metadata_opr(rbx);
aoqi@0:   rax_metadata_opr = as_metadata_opr(rax);
aoqi@0:   rdx_metadata_opr = as_metadata_opr(rdx);
aoqi@0:   rcx_metadata_opr = as_metadata_opr(rcx);
aoqi@0: 
aoqi@0:   rsp_opr = as_pointer_opr(rsp);
aoqi@0:   rbp_opr = as_pointer_opr(rbp);
aoqi@0: 
aoqi@0: #ifdef _LP64
aoqi@0:   r8_oop_opr = as_oop_opr(r8);
aoqi@0:   r9_oop_opr = as_oop_opr(r9);
aoqi@0:   r11_oop_opr = as_oop_opr(r11);
aoqi@0:   r12_oop_opr = as_oop_opr(r12);
aoqi@0:   r13_oop_opr = as_oop_opr(r13);
aoqi@0:   r14_oop_opr = as_oop_opr(r14);
aoqi@0: 
aoqi@0:   r8_metadata_opr = as_metadata_opr(r8);
aoqi@0:   r9_metadata_opr = as_metadata_opr(r9);
aoqi@0:   r11_metadata_opr = as_metadata_opr(r11);
aoqi@0:   r12_metadata_opr = as_metadata_opr(r12);
aoqi@0:   r13_metadata_opr = as_metadata_opr(r13);
aoqi@0:   r14_metadata_opr = as_metadata_opr(r14);
aoqi@0: #endif // _LP64
aoqi@0: 
aoqi@0:   VMRegPair regs;
aoqi@0:   BasicType sig_bt = T_OBJECT;
aoqi@0:   SharedRuntime::java_calling_convention(&sig_bt, &regs, 1, true);
aoqi@0:   receiver_opr = as_oop_opr(regs.first()->as_Register());
aoqi@0: 
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: Address FrameMap::make_new_address(ByteSize sp_offset) const {
aoqi@0:   // for rbp, based address use this:
aoqi@0:   // return Address(rbp, in_bytes(sp_offset) - (framesize() - 2) * 4);
aoqi@0:   return Address(rsp, in_bytes(sp_offset));
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: // ----------------mapping-----------------------
aoqi@0: // all mapping is based on rbp, addressing, except for simple leaf methods where we access
aoqi@0: // the locals rsp based (and no frame is built)
aoqi@0: 
aoqi@0: 
aoqi@0: // Frame for simple leaf methods (quick entries)
aoqi@0: //
aoqi@0: //   +----------+
aoqi@0: //   | ret addr |   <- TOS
aoqi@0: //   +----------+
aoqi@0: //   | args     |
aoqi@0: //   | ......   |
aoqi@0: 
aoqi@0: // Frame for standard methods
aoqi@0: //
aoqi@0: //   | .........|  <- TOS
aoqi@0: //   | locals   |
aoqi@0: //   +----------+
aoqi@0: //   | old rbp,  |  <- EBP
aoqi@0: //   +----------+
aoqi@0: //   | ret addr |
aoqi@0: //   +----------+
aoqi@0: //   |  args    |
aoqi@0: //   | .........|
aoqi@0: 
aoqi@0: 
aoqi@0: // For OopMaps, map a local variable or spill index to an VMRegImpl name.
aoqi@0: // This is the offset from sp() in the frame of the slot for the index,
aoqi@0: // skewed by VMRegImpl::stack0 to indicate a stack location (vs.a register.)
aoqi@0: //
aoqi@0: //           framesize +
aoqi@0: //           stack0         stack0          0  <- VMReg
aoqi@0: //             |              | <registers> |
aoqi@0: //  ...........|..............|.............|
aoqi@0: //      0 1 2 3 x x 4 5 6 ... |                <- local indices
aoqi@0: //      ^           ^        sp()                 ( x x indicate link
aoqi@0: //      |           |                               and return addr)
aoqi@0: //  arguments   non-argument locals
aoqi@0: 
aoqi@0: 
aoqi@0: VMReg FrameMap::fpu_regname (int n) {
aoqi@0:   // Return the OptoReg name for the fpu stack slot "n"
aoqi@0:   // A spilled fpu stack slot comprises to two single-word OptoReg's.
aoqi@0:   return as_FloatRegister(n)->as_VMReg();
aoqi@0: }
aoqi@0: 
aoqi@0: LIR_Opr FrameMap::stack_pointer() {
aoqi@0:   return FrameMap::rsp_opr;
aoqi@0: }
aoqi@0: 
aoqi@0: // JSR 292
zmajo@7854: // On x86, there is no need to save the SP, because neither
zmajo@7854: // method handle intrinsics, nor compiled lambda forms modify it.
aoqi@0: LIR_Opr FrameMap::method_handle_invoke_SP_save_opr() {
zmajo@7854:   return LIR_OprFact::illegalOpr;
aoqi@0: }
aoqi@0: 
aoqi@0: bool FrameMap::validate_frame() {
aoqi@0:   return true;
aoqi@0: }