--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/cpu/x86/vm/c1_FrameMap_x86.cpp Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,225 @@
+/*
+ * Copyright 1999-2006 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+# include "incls/_precompiled.incl"
+# include "incls/_c1_FrameMap_x86.cpp.incl"
+
+const int FrameMap::pd_c_runtime_reserved_arg_size = 0;
+
+LIR_Opr FrameMap::map_to_opr(BasicType type, VMRegPair* reg, bool) {
+ LIR_Opr opr = LIR_OprFact::illegalOpr;
+ VMReg r_1 = reg->first();
+ VMReg r_2 = reg->second();
+ if (r_1->is_stack()) {
+ // Convert stack slot to an SP offset
+ // The calling convention does not count the SharedRuntime::out_preserve_stack_slots() value
+ // so we must add it in here.
+ int st_off = (r_1->reg2stack() + SharedRuntime::out_preserve_stack_slots()) * VMRegImpl::stack_slot_size;
+ opr = LIR_OprFact::address(new LIR_Address(rsp_opr, st_off, type));
+ } else if (r_1->is_Register()) {
+ Register reg = r_1->as_Register();
+ if (r_2->is_Register()) {
+ Register reg2 = r_2->as_Register();
+ opr = as_long_opr(reg2, reg);
+ } else if (type == T_OBJECT) {
+ opr = as_oop_opr(reg);
+ } else {
+ opr = as_opr(reg);
+ }
+ } else if (r_1->is_FloatRegister()) {
+ assert(type == T_DOUBLE || type == T_FLOAT, "wrong type");
+ int num = r_1->as_FloatRegister()->encoding();
+ if (type == T_FLOAT) {
+ opr = LIR_OprFact::single_fpu(num);
+ } else {
+ opr = LIR_OprFact::double_fpu(num);
+ }
+ } else if (r_1->is_XMMRegister()) {
+ assert(type == T_DOUBLE || type == T_FLOAT, "wrong type");
+ int num = r_1->as_XMMRegister()->encoding();
+ if (type == T_FLOAT) {
+ opr = LIR_OprFact::single_xmm(num);
+ } else {
+ opr = LIR_OprFact::double_xmm(num);
+ }
+ } else {
+ ShouldNotReachHere();
+ }
+ return opr;
+}
+
+
+LIR_Opr FrameMap::rsi_opr;
+LIR_Opr FrameMap::rdi_opr;
+LIR_Opr FrameMap::rbx_opr;
+LIR_Opr FrameMap::rax_opr;
+LIR_Opr FrameMap::rdx_opr;
+LIR_Opr FrameMap::rcx_opr;
+LIR_Opr FrameMap::rsp_opr;
+LIR_Opr FrameMap::rbp_opr;
+
+LIR_Opr FrameMap::receiver_opr;
+
+LIR_Opr FrameMap::rsi_oop_opr;
+LIR_Opr FrameMap::rdi_oop_opr;
+LIR_Opr FrameMap::rbx_oop_opr;
+LIR_Opr FrameMap::rax_oop_opr;
+LIR_Opr FrameMap::rdx_oop_opr;
+LIR_Opr FrameMap::rcx_oop_opr;
+
+LIR_Opr FrameMap::rax_rdx_long_opr;
+LIR_Opr FrameMap::rbx_rcx_long_opr;
+LIR_Opr FrameMap::fpu0_float_opr;
+LIR_Opr FrameMap::fpu0_double_opr;
+LIR_Opr FrameMap::xmm0_float_opr;
+LIR_Opr FrameMap::xmm0_double_opr;
+
+LIR_Opr FrameMap::_caller_save_cpu_regs[] = { 0, };
+LIR_Opr FrameMap::_caller_save_fpu_regs[] = { 0, };
+LIR_Opr FrameMap::_caller_save_xmm_regs[] = { 0, };
+
+XMMRegister FrameMap::_xmm_regs [8] = { 0, };
+
+XMMRegister FrameMap::nr2xmmreg(int rnr) {
+ assert(_init_done, "tables not initialized");
+ return _xmm_regs[rnr];
+}
+
+//--------------------------------------------------------
+// FrameMap
+//--------------------------------------------------------
+
+void FrameMap::init() {
+ if (_init_done) return;
+
+ assert(nof_cpu_regs == 8, "wrong number of CPU registers");
+ map_register(0, rsi); rsi_opr = LIR_OprFact::single_cpu(0); rsi_oop_opr = LIR_OprFact::single_cpu_oop(0);
+ map_register(1, rdi); rdi_opr = LIR_OprFact::single_cpu(1); rdi_oop_opr = LIR_OprFact::single_cpu_oop(1);
+ map_register(2, rbx); rbx_opr = LIR_OprFact::single_cpu(2); rbx_oop_opr = LIR_OprFact::single_cpu_oop(2);
+ map_register(3, rax); rax_opr = LIR_OprFact::single_cpu(3); rax_oop_opr = LIR_OprFact::single_cpu_oop(3);
+ map_register(4, rdx); rdx_opr = LIR_OprFact::single_cpu(4); rdx_oop_opr = LIR_OprFact::single_cpu_oop(4);
+ map_register(5, rcx); rcx_opr = LIR_OprFact::single_cpu(5); rcx_oop_opr = LIR_OprFact::single_cpu_oop(5);
+ map_register(6, rsp); rsp_opr = LIR_OprFact::single_cpu(6);
+ map_register(7, rbp); rbp_opr = LIR_OprFact::single_cpu(7);
+
+ rax_rdx_long_opr = LIR_OprFact::double_cpu(3 /*eax*/, 4 /*edx*/);
+ rbx_rcx_long_opr = LIR_OprFact::double_cpu(2 /*ebx*/, 5 /*ecx*/);
+ fpu0_float_opr = LIR_OprFact::single_fpu(0);
+ fpu0_double_opr = LIR_OprFact::double_fpu(0);
+ xmm0_float_opr = LIR_OprFact::single_xmm(0);
+ xmm0_double_opr = LIR_OprFact::double_xmm(0);
+
+ _caller_save_cpu_regs[0] = rsi_opr;
+ _caller_save_cpu_regs[1] = rdi_opr;
+ _caller_save_cpu_regs[2] = rbx_opr;
+ _caller_save_cpu_regs[3] = rax_opr;
+ _caller_save_cpu_regs[4] = rdx_opr;
+ _caller_save_cpu_regs[5] = rcx_opr;
+
+
+ _xmm_regs[0] = xmm0;
+ _xmm_regs[1] = xmm1;
+ _xmm_regs[2] = xmm2;
+ _xmm_regs[3] = xmm3;
+ _xmm_regs[4] = xmm4;
+ _xmm_regs[5] = xmm5;
+ _xmm_regs[6] = xmm6;
+ _xmm_regs[7] = xmm7;
+
+ for (int i = 0; i < 8; i++) {
+ _caller_save_fpu_regs[i] = LIR_OprFact::single_fpu(i);
+ _caller_save_xmm_regs[i] = LIR_OprFact::single_xmm(i);
+ }
+
+ _init_done = true;
+
+ VMRegPair regs;
+ BasicType sig_bt = T_OBJECT;
+ SharedRuntime::java_calling_convention(&sig_bt, ®s, 1, true);
+ receiver_opr = as_oop_opr(regs.first()->as_Register());
+ assert(receiver_opr == rcx_oop_opr, "rcvr ought to be rcx");
+}
+
+
+Address FrameMap::make_new_address(ByteSize sp_offset) const {
+ // for rbp, based address use this:
+ // return Address(rbp, in_bytes(sp_offset) - (framesize() - 2) * 4);
+ return Address(rsp, in_bytes(sp_offset));
+}
+
+
+// ----------------mapping-----------------------
+// all mapping is based on rbp, addressing, except for simple leaf methods where we access
+// the locals rsp based (and no frame is built)
+
+
+// Frame for simple leaf methods (quick entries)
+//
+// +----------+
+// | ret addr | <- TOS
+// +----------+
+// | args |
+// | ...... |
+
+// Frame for standard methods
+//
+// | .........| <- TOS
+// | locals |
+// +----------+
+// | old rbp, | <- EBP
+// +----------+
+// | ret addr |
+// +----------+
+// | args |
+// | .........|
+
+
+// For OopMaps, map a local variable or spill index to an VMRegImpl name.
+// This is the offset from sp() in the frame of the slot for the index,
+// skewed by VMRegImpl::stack0 to indicate a stack location (vs.a register.)
+//
+// framesize +
+// stack0 stack0 0 <- VMReg
+// | | <registers> |
+// ...........|..............|.............|
+// 0 1 2 3 x x 4 5 6 ... | <- local indices
+// ^ ^ sp() ( x x indicate link
+// | | and return addr)
+// arguments non-argument locals
+
+
+VMReg FrameMap::fpu_regname (int n) {
+ // Return the OptoReg name for the fpu stack slot "n"
+ // A spilled fpu stack slot comprises to two single-word OptoReg's.
+ return as_FloatRegister(n)->as_VMReg();
+}
+
+LIR_Opr FrameMap::stack_pointer() {
+ return FrameMap::rsp_opr;
+}
+
+
+bool FrameMap::validate_frame() {
+ return true;
+}