utility.cc revision 13611:c8b7847b4171
112334Sgabeblack@google.com/* 212334Sgabeblack@google.com * Copyright (c) 2003-2005 The Regents of The University of Michigan 312334Sgabeblack@google.com * All rights reserved. 412334Sgabeblack@google.com * 512334Sgabeblack@google.com * Redistribution and use in source and binary forms, with or without 612334Sgabeblack@google.com * modification, are permitted provided that the following conditions are 712334Sgabeblack@google.com * met: redistributions of source code must retain the above copyright 812334Sgabeblack@google.com * notice, this list of conditions and the following disclaimer; 912334Sgabeblack@google.com * redistributions in binary form must reproduce the above copyright 1012334Sgabeblack@google.com * notice, this list of conditions and the following disclaimer in the 1112334Sgabeblack@google.com * documentation and/or other materials provided with the distribution; 1212334Sgabeblack@google.com * neither the name of the copyright holders nor the names of its 1312334Sgabeblack@google.com * contributors may be used to endorse or promote products derived from 1412334Sgabeblack@google.com * this software without specific prior written permission. 1512334Sgabeblack@google.com * 1612334Sgabeblack@google.com * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 1712334Sgabeblack@google.com * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 1812334Sgabeblack@google.com * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 1912334Sgabeblack@google.com * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 2012334Sgabeblack@google.com * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 2112334Sgabeblack@google.com * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 2212334Sgabeblack@google.com * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 2312334Sgabeblack@google.com * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 2412334Sgabeblack@google.com * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 2512334Sgabeblack@google.com * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 2612334Sgabeblack@google.com * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2712334Sgabeblack@google.com * 2812334Sgabeblack@google.com * Authors: Gabe Black 2912334Sgabeblack@google.com * Ali Saidi 3012334Sgabeblack@google.com */ 3112334Sgabeblack@google.com 3212334Sgabeblack@google.com#include "arch/sparc/utility.hh" 3312334Sgabeblack@google.com 3412334Sgabeblack@google.com#include "arch/sparc/faults.hh" 3512334Sgabeblack@google.com#include "arch/sparc/vtophys.hh" 3612334Sgabeblack@google.com#include "mem/fs_translating_port_proxy.hh" 3712334Sgabeblack@google.com 3812334Sgabeblack@google.comnamespace SparcISA { 3912334Sgabeblack@google.com 4012334Sgabeblack@google.com 4112334Sgabeblack@google.com// The caller uses %o0-%05 for the first 6 arguments even if their floating 4212334Sgabeblack@google.com// point. Double precision floating point values take two registers/args. 4312334Sgabeblack@google.com// Quads, structs, and unions are passed as pointers. All arguments beyond 4412334Sgabeblack@google.com// the sixth are passed on the stack past the 16 word window save area, 4512334Sgabeblack@google.com// space for the struct/union return pointer, and space reserved for the 4612334Sgabeblack@google.com// first 6 arguments which the caller may use but doesn't have to. 4712334Sgabeblack@google.comuint64_t 4812334Sgabeblack@google.comgetArgument(ThreadContext *tc, int &number, uint16_t size, bool fp) 4912334Sgabeblack@google.com{ 5012334Sgabeblack@google.com if (!FullSystem) { 5112334Sgabeblack@google.com panic("getArgument() only implemented for full system\n"); 5212334Sgabeblack@google.com M5_DUMMY_RETURN 5312334Sgabeblack@google.com } 5412334Sgabeblack@google.com 5512334Sgabeblack@google.com const int NumArgumentRegs = 6; 5612334Sgabeblack@google.com if (number < NumArgumentRegs) { 5712334Sgabeblack@google.com return tc->readIntReg(8 + number); 5812334Sgabeblack@google.com } else { 5912334Sgabeblack@google.com Addr sp = tc->readIntReg(StackPointerReg); 6012334Sgabeblack@google.com FSTranslatingPortProxy &vp = tc->getVirtProxy(); 6112334Sgabeblack@google.com uint64_t arg = vp.read<uint64_t>(sp + 92 + 6212334Sgabeblack@google.com (number-NumArgumentRegs) * sizeof(uint64_t)); 6312334Sgabeblack@google.com return arg; 6412334Sgabeblack@google.com } 6512334Sgabeblack@google.com} 6612334Sgabeblack@google.com 6712334Sgabeblack@google.comvoid 6812334Sgabeblack@google.comcopyMiscRegs(ThreadContext *src, ThreadContext *dest) 6912334Sgabeblack@google.com{ 7012334Sgabeblack@google.com 7112334Sgabeblack@google.com uint8_t tl = src->readMiscRegNoEffect(MISCREG_TL); 7212334Sgabeblack@google.com 7312334Sgabeblack@google.com // Read all the trap level dependent registers and save them off 7412334Sgabeblack@google.com for (int i = 1; i <= MaxTL; i++) { 7512334Sgabeblack@google.com src->setMiscRegNoEffect(MISCREG_TL, i); 7612334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_TL, i); 7712334Sgabeblack@google.com 7812334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_TT, 7912334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_TT)); 8012334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_TPC, 8112334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_TPC)); 8212334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_TNPC, 8312334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_TNPC)); 8412334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_TSTATE, 8512334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_TSTATE)); 8612334Sgabeblack@google.com } 8712334Sgabeblack@google.com 8812334Sgabeblack@google.com // Save off the traplevel 8912334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_TL, tl); 9012334Sgabeblack@google.com src->setMiscRegNoEffect(MISCREG_TL, tl); 9112334Sgabeblack@google.com 9212334Sgabeblack@google.com 9312334Sgabeblack@google.com // ASRs 9412334Sgabeblack@google.com// dest->setMiscRegNoEffect(MISCREG_Y, 9512334Sgabeblack@google.com// src->readMiscRegNoEffect(MISCREG_Y)); 9612334Sgabeblack@google.com// dest->setMiscRegNoEffect(MISCREG_CCR, 9712334Sgabeblack@google.com// src->readMiscRegNoEffect(MISCREG_CCR)); 9812334Sgabeblack@google.com dest->setMiscReg(MISCREG_ASI, 9912334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_ASI)); 10012334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_TICK, 10112334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_TICK)); 10212334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_FPRS, 10312334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_FPRS)); 10412334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_SOFTINT, 10512334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_SOFTINT)); 10612334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_TICK_CMPR, 10712334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_TICK_CMPR)); 10812334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_STICK, 10912334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_STICK)); 11012334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_STICK_CMPR, 11112334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_STICK_CMPR)); 11212334Sgabeblack@google.com 11312334Sgabeblack@google.com // Priv Registers 11412334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_TICK, 11512334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_TICK)); 11612334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_TBA, 11712334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_TBA)); 11812334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_PSTATE, 11912334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_PSTATE)); 12012334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_PIL, 12112334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_PIL)); 12212334Sgabeblack@google.com dest->setMiscReg(MISCREG_CWP, 12312334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_CWP)); 12412334Sgabeblack@google.com// dest->setMiscRegNoEffect(MISCREG_CANSAVE, 12512334Sgabeblack@google.com// src->readMiscRegNoEffect(MISCREG_CANSAVE)); 12612334Sgabeblack@google.com// dest->setMiscRegNoEffect(MISCREG_CANRESTORE, 12712334Sgabeblack@google.com// src->readMiscRegNoEffect(MISCREG_CANRESTORE)); 12812334Sgabeblack@google.com// dest->setMiscRegNoEffect(MISCREG_OTHERWIN, 12912334Sgabeblack@google.com// src->readMiscRegNoEffect(MISCREG_OTHERWIN)); 13012334Sgabeblack@google.com// dest->setMiscRegNoEffect(MISCREG_CLEANWIN, 13112334Sgabeblack@google.com// src->readMiscRegNoEffect(MISCREG_CLEANWIN)); 13212334Sgabeblack@google.com// dest->setMiscRegNoEffect(MISCREG_WSTATE, 13312334Sgabeblack@google.com// src->readMiscRegNoEffect(MISCREG_WSTATE)); 13412334Sgabeblack@google.com dest->setMiscReg(MISCREG_GL, src->readMiscRegNoEffect(MISCREG_GL)); 13512334Sgabeblack@google.com 13612334Sgabeblack@google.com // Hyperprivilged registers 13712334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_HPSTATE, 13812334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_HPSTATE)); 13912334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_HINTP, 14012334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_HINTP)); 14112334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_HTBA, 14212334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_HTBA)); 14312334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_STRAND_STS_REG, 14412334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_STRAND_STS_REG)); 14512334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_HSTICK_CMPR, 14612334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_HSTICK_CMPR)); 14712334Sgabeblack@google.com 14812334Sgabeblack@google.com // FSR 14912334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_FSR, 15012334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_FSR)); 15112334Sgabeblack@google.com 15212334Sgabeblack@google.com // Strand Status Register 15312334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_STRAND_STS_REG, 15412334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_STRAND_STS_REG)); 15512334Sgabeblack@google.com 15612334Sgabeblack@google.com // MMU Registers 15712334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_MMU_P_CONTEXT, 15812334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_MMU_P_CONTEXT)); 15912334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_MMU_S_CONTEXT, 16012334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_MMU_S_CONTEXT)); 16112334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_MMU_PART_ID, 16212334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_MMU_PART_ID)); 16312334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_MMU_LSU_CTRL, 16412334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_MMU_LSU_CTRL)); 16512334Sgabeblack@google.com 16612334Sgabeblack@google.com // Scratchpad Registers 16712334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_SCRATCHPAD_R0, 16812334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_SCRATCHPAD_R0)); 16912334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_SCRATCHPAD_R1, 17012334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_SCRATCHPAD_R1)); 17112334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_SCRATCHPAD_R2, 17212334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_SCRATCHPAD_R2)); 17312334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_SCRATCHPAD_R3, 17412334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_SCRATCHPAD_R3)); 17512334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_SCRATCHPAD_R4, 17612334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_SCRATCHPAD_R4)); 17712334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_SCRATCHPAD_R5, 17812334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_SCRATCHPAD_R5)); 17912334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_SCRATCHPAD_R6, 18012334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_SCRATCHPAD_R6)); 18112334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_SCRATCHPAD_R7, 18212334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_SCRATCHPAD_R7)); 18312334Sgabeblack@google.com 18412334Sgabeblack@google.com // Queue Registers 18512334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_QUEUE_CPU_MONDO_HEAD, 18612334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_QUEUE_CPU_MONDO_HEAD)); 18712334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_QUEUE_CPU_MONDO_TAIL, 18812334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_QUEUE_CPU_MONDO_TAIL)); 18912334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_QUEUE_DEV_MONDO_HEAD, 19012334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_QUEUE_DEV_MONDO_HEAD)); 19112334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_QUEUE_DEV_MONDO_TAIL, 19212334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_QUEUE_DEV_MONDO_TAIL)); 19312334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_QUEUE_RES_ERROR_HEAD, 19412334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_QUEUE_RES_ERROR_HEAD)); 19512334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_QUEUE_RES_ERROR_TAIL, 19612334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_QUEUE_RES_ERROR_TAIL)); 19712334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_QUEUE_NRES_ERROR_HEAD, 19812334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_QUEUE_NRES_ERROR_HEAD)); 19912334Sgabeblack@google.com dest->setMiscRegNoEffect(MISCREG_QUEUE_NRES_ERROR_TAIL, 20012334Sgabeblack@google.com src->readMiscRegNoEffect(MISCREG_QUEUE_NRES_ERROR_TAIL)); 20112334Sgabeblack@google.com} 20212334Sgabeblack@google.com 20312334Sgabeblack@google.comvoid 20412334Sgabeblack@google.comcopyRegs(ThreadContext *src, ThreadContext *dest) 20512334Sgabeblack@google.com{ 20612334Sgabeblack@google.com // First loop through the integer registers. 20712334Sgabeblack@google.com int old_gl = src->readMiscRegNoEffect(MISCREG_GL); 20812334Sgabeblack@google.com int old_cwp = src->readMiscRegNoEffect(MISCREG_CWP); 20912334Sgabeblack@google.com // Globals 21012334Sgabeblack@google.com for (int x = 0; x < MaxGL; ++x) { 21112334Sgabeblack@google.com src->setMiscReg(MISCREG_GL, x); 21212334Sgabeblack@google.com dest->setMiscReg(MISCREG_GL, x); 21312334Sgabeblack@google.com // Skip %g0 which is always zero. 21412334Sgabeblack@google.com for (int y = 1; y < 8; y++) 21512334Sgabeblack@google.com dest->setIntReg(y, src->readIntReg(y)); 21612334Sgabeblack@google.com } 21712334Sgabeblack@google.com // Locals and ins. Outs are all also ins. 21812334Sgabeblack@google.com for (int x = 0; x < NWindows; ++x) { 21912334Sgabeblack@google.com src->setMiscReg(MISCREG_CWP, x); 22012334Sgabeblack@google.com dest->setMiscReg(MISCREG_CWP, x); 22112334Sgabeblack@google.com for (int y = 16; y < 32; y++) 22212334Sgabeblack@google.com dest->setIntReg(y, src->readIntReg(y)); 22312334Sgabeblack@google.com } 22412334Sgabeblack@google.com // Microcode reg and pseudo int regs (misc regs in the integer regfile). 22512334Sgabeblack@google.com for (int y = NumIntArchRegs; y < NumIntArchRegs + NumMicroIntRegs; ++y) 22612334Sgabeblack@google.com dest->setIntReg(y, src->readIntReg(y)); 22712334Sgabeblack@google.com 22812334Sgabeblack@google.com // Restore src's GL, CWP 22912334Sgabeblack@google.com src->setMiscReg(MISCREG_GL, old_gl); 23012334Sgabeblack@google.com src->setMiscReg(MISCREG_CWP, old_cwp); 23112334Sgabeblack@google.com 23212334Sgabeblack@google.com 23312334Sgabeblack@google.com // Then loop through the floating point registers. 23412334Sgabeblack@google.com for (int i = 0; i < SparcISA::NumFloatArchRegs; ++i) { 23512334Sgabeblack@google.com dest->setFloatReg(i, src->readFloatReg(i)); 23612334Sgabeblack@google.com } 23712334Sgabeblack@google.com 23812334Sgabeblack@google.com // Would need to add condition-code regs if implemented 23912334Sgabeblack@google.com assert(NumCCRegs == 0); 24012334Sgabeblack@google.com 24112334Sgabeblack@google.com // Copy misc. registers 24212334Sgabeblack@google.com copyMiscRegs(src, dest); 24312334Sgabeblack@google.com 24412334Sgabeblack@google.com // Lastly copy PC/NPC 24512334Sgabeblack@google.com dest->pcState(src->pcState()); 24612334Sgabeblack@google.com} 24712334Sgabeblack@google.com 24812334Sgabeblack@google.comvoid 24912334Sgabeblack@google.comskipFunction(ThreadContext *tc) 25012334Sgabeblack@google.com{ 25112334Sgabeblack@google.com TheISA::PCState newPC = tc->pcState(); 25212334Sgabeblack@google.com newPC.set(tc->readIntReg(ReturnAddressReg)); 25312334Sgabeblack@google.com tc->pcState(newPC); 25412334Sgabeblack@google.com} 25512334Sgabeblack@google.com 25612334Sgabeblack@google.com 257void 258initCPU(ThreadContext *tc, int cpuId) 259{ 260 static Fault por = std::make_shared<PowerOnReset>(); 261 if (cpuId == 0) 262 por->invoke(tc); 263} 264 265} // namespace SPARC_ISA 266