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/*
* Copyright (c) 2003-2005 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Gabe Black
* Ali Saidi
*/
#include "arch/sparc/utility.hh"
#if FULL_SYSTEM
#include "arch/sparc/vtophys.hh"
#include "mem/vport.hh"
#endif
namespace SparcISA {
//The caller uses %o0-%05 for the first 6 arguments even if their floating
//point. Double precision floating point values take two registers/args.
//Quads, structs, and unions are passed as pointers. All arguments beyond
//the sixth are passed on the stack past the 16 word window save area,
//space for the struct/union return pointer, and space reserved for the
//first 6 arguments which the caller may use but doesn't have to.
uint64_t getArgument(ThreadContext *tc, int number, bool fp) {
#if FULL_SYSTEM
const int NumArgumentRegs = 6;
if (number < NumArgumentRegs) {
return tc->readIntReg(8 + number);
} else {
Addr sp = tc->readIntReg(StackPointerReg);
VirtualPort *vp = tc->getVirtPort();
uint64_t arg = vp->read<uint64_t>(sp + 92 +
(number-NumArgumentRegs) * sizeof(uint64_t));
return arg;
}
#else
panic("getArgument() only implemented for FULL_SYSTEM\n");
M5_DUMMY_RETURN
#endif
}
void
copyMiscRegs(ThreadContext *src, ThreadContext *dest)
{
uint8_t tl = src->readMiscRegNoEffect(MISCREG_TL);
// Read all the trap level dependent registers and save them off
for(int i = 1; i <= MaxTL; i++)
{
src->setMiscRegNoEffect(MISCREG_TL, i);
dest->setMiscRegNoEffect(MISCREG_TL, i);
dest->setMiscRegNoEffect(MISCREG_TT, src->readMiscRegNoEffect(MISCREG_TT));
dest->setMiscRegNoEffect(MISCREG_TPC, src->readMiscRegNoEffect(MISCREG_TPC));
dest->setMiscRegNoEffect(MISCREG_TNPC, src->readMiscRegNoEffect(MISCREG_TNPC));
dest->setMiscRegNoEffect(MISCREG_TSTATE, src->readMiscRegNoEffect(MISCREG_TSTATE));
}
// Save off the traplevel
dest->setMiscRegNoEffect(MISCREG_TL, tl);
src->setMiscRegNoEffect(MISCREG_TL, tl);
// ASRs
// dest->setMiscRegNoEffect(MISCREG_Y, src->readMiscRegNoEffect(MISCREG_Y));
// dest->setMiscRegNoEffect(MISCREG_CCR, src->readMiscRegNoEffect(MISCREG_CCR));
dest->setMiscRegNoEffect(MISCREG_ASI, src->readMiscRegNoEffect(MISCREG_ASI));
dest->setMiscRegNoEffect(MISCREG_TICK, src->readMiscRegNoEffect(MISCREG_TICK));
dest->setMiscRegNoEffect(MISCREG_FPRS, src->readMiscRegNoEffect(MISCREG_FPRS));
dest->setMiscRegNoEffect(MISCREG_SOFTINT, src->readMiscRegNoEffect(MISCREG_SOFTINT));
dest->setMiscRegNoEffect(MISCREG_TICK_CMPR, src->readMiscRegNoEffect(MISCREG_TICK_CMPR));
dest->setMiscRegNoEffect(MISCREG_STICK, src->readMiscRegNoEffect(MISCREG_STICK));
dest->setMiscRegNoEffect(MISCREG_STICK_CMPR, src->readMiscRegNoEffect(MISCREG_STICK_CMPR));
// Priv Registers
dest->setMiscRegNoEffect(MISCREG_TICK, src->readMiscRegNoEffect(MISCREG_TICK));
dest->setMiscRegNoEffect(MISCREG_TBA, src->readMiscRegNoEffect(MISCREG_TBA));
dest->setMiscRegNoEffect(MISCREG_PSTATE, src->readMiscRegNoEffect(MISCREG_PSTATE));
dest->setMiscRegNoEffect(MISCREG_PIL, src->readMiscRegNoEffect(MISCREG_PIL));
dest->setMiscRegNoEffect(MISCREG_CWP, src->readMiscRegNoEffect(MISCREG_CWP));
// dest->setMiscRegNoEffect(MISCREG_CANSAVE, src->readMiscRegNoEffect(MISCREG_CANSAVE));
// dest->setMiscRegNoEffect(MISCREG_CANRESTORE, src->readMiscRegNoEffect(MISCREG_CANRESTORE));
// dest->setMiscRegNoEffect(MISCREG_OTHERWIN, src->readMiscRegNoEffect(MISCREG_OTHERWIN));
// dest->setMiscRegNoEffect(MISCREG_CLEANWIN, src->readMiscRegNoEffect(MISCREG_CLEANWIN));
// dest->setMiscRegNoEffect(MISCREG_WSTATE, src->readMiscRegNoEffect(MISCREG_WSTATE));
dest->setMiscRegNoEffect(MISCREG_GL, src->readMiscRegNoEffect(MISCREG_GL));
// Hyperprivilged registers
dest->setMiscRegNoEffect(MISCREG_HPSTATE, src->readMiscRegNoEffect(MISCREG_HPSTATE));
dest->setMiscRegNoEffect(MISCREG_HINTP, src->readMiscRegNoEffect(MISCREG_HINTP));
dest->setMiscRegNoEffect(MISCREG_HTBA, src->readMiscRegNoEffect(MISCREG_HTBA));
dest->setMiscRegNoEffect(MISCREG_STRAND_STS_REG,
src->readMiscRegNoEffect(MISCREG_STRAND_STS_REG));
dest->setMiscRegNoEffect(MISCREG_HSTICK_CMPR,
src->readMiscRegNoEffect(MISCREG_HSTICK_CMPR));
// FSR
dest->setMiscRegNoEffect(MISCREG_FSR, src->readMiscRegNoEffect(MISCREG_FSR));
//Strand Status Register
dest->setMiscRegNoEffect(MISCREG_STRAND_STS_REG,
src->readMiscRegNoEffect(MISCREG_STRAND_STS_REG));
// MMU Registers
dest->setMiscRegNoEffect(MISCREG_MMU_P_CONTEXT,
src->readMiscRegNoEffect(MISCREG_MMU_P_CONTEXT));
dest->setMiscRegNoEffect(MISCREG_MMU_S_CONTEXT,
src->readMiscRegNoEffect(MISCREG_MMU_S_CONTEXT));
dest->setMiscRegNoEffect(MISCREG_MMU_PART_ID,
src->readMiscRegNoEffect(MISCREG_MMU_PART_ID));
dest->setMiscRegNoEffect(MISCREG_MMU_LSU_CTRL,
src->readMiscRegNoEffect(MISCREG_MMU_LSU_CTRL));
// Scratchpad Registers
dest->setMiscRegNoEffect(MISCREG_SCRATCHPAD_R0,
src->readMiscRegNoEffect(MISCREG_SCRATCHPAD_R0));
dest->setMiscRegNoEffect(MISCREG_SCRATCHPAD_R1,
src->readMiscRegNoEffect(MISCREG_SCRATCHPAD_R1));
dest->setMiscRegNoEffect(MISCREG_SCRATCHPAD_R2,
src->readMiscRegNoEffect(MISCREG_SCRATCHPAD_R2));
dest->setMiscRegNoEffect(MISCREG_SCRATCHPAD_R3,
src->readMiscRegNoEffect(MISCREG_SCRATCHPAD_R3));
dest->setMiscRegNoEffect(MISCREG_SCRATCHPAD_R4,
src->readMiscRegNoEffect(MISCREG_SCRATCHPAD_R4));
dest->setMiscRegNoEffect(MISCREG_SCRATCHPAD_R5,
src->readMiscRegNoEffect(MISCREG_SCRATCHPAD_R5));
dest->setMiscRegNoEffect(MISCREG_SCRATCHPAD_R6,
src->readMiscRegNoEffect(MISCREG_SCRATCHPAD_R6));
dest->setMiscRegNoEffect(MISCREG_SCRATCHPAD_R7,
src->readMiscRegNoEffect(MISCREG_SCRATCHPAD_R7));
// Queue Registers
dest->setMiscRegNoEffect(MISCREG_QUEUE_CPU_MONDO_HEAD,
src->readMiscRegNoEffect(MISCREG_QUEUE_CPU_MONDO_HEAD));
dest->setMiscRegNoEffect(MISCREG_QUEUE_CPU_MONDO_TAIL,
src->readMiscRegNoEffect(MISCREG_QUEUE_CPU_MONDO_TAIL));
dest->setMiscRegNoEffect(MISCREG_QUEUE_DEV_MONDO_HEAD,
src->readMiscRegNoEffect(MISCREG_QUEUE_DEV_MONDO_HEAD));
dest->setMiscRegNoEffect(MISCREG_QUEUE_DEV_MONDO_TAIL,
src->readMiscRegNoEffect(MISCREG_QUEUE_DEV_MONDO_TAIL));
dest->setMiscRegNoEffect(MISCREG_QUEUE_RES_ERROR_HEAD,
src->readMiscRegNoEffect(MISCREG_QUEUE_RES_ERROR_HEAD));
dest->setMiscRegNoEffect(MISCREG_QUEUE_RES_ERROR_TAIL,
src->readMiscRegNoEffect(MISCREG_QUEUE_RES_ERROR_TAIL));
dest->setMiscRegNoEffect(MISCREG_QUEUE_NRES_ERROR_HEAD,
src->readMiscRegNoEffect(MISCREG_QUEUE_NRES_ERROR_HEAD));
dest->setMiscRegNoEffect(MISCREG_QUEUE_NRES_ERROR_TAIL,
src->readMiscRegNoEffect(MISCREG_QUEUE_NRES_ERROR_TAIL));
}
void
copyRegs(ThreadContext *src, ThreadContext *dest)
{
//First loop through the integer registers.
int old_gl = src->readMiscRegNoEffect(MISCREG_GL);
int old_cwp = src->readMiscRegNoEffect(MISCREG_CWP);
//Globals
for (int x = 0; x < MaxGL; ++x) {
src->setMiscRegNoEffect(MISCREG_GL, x);
dest->setMiscRegNoEffect(MISCREG_GL, x);
// Skip %g0 which is always zero.
for (int y = 1; y < 8; y++)
dest->setIntReg(y, src->readIntReg(y));
}
//Locals and ins. Outs are all also ins.
for (int x = 0; x < NWindows; ++x) {
src->setMiscRegNoEffect(MISCREG_CWP, x);
dest->setMiscRegNoEffect(MISCREG_CWP, x);
for (int y = 16; y < 32; y++)
dest->setIntReg(y, src->readIntReg(y));
}
//Microcode reg and pseudo int regs (misc regs in the integer regfile).
for (int y = NumIntArchRegs; y < NumIntArchRegs + NumMicroIntRegs; ++y)
dest->setIntReg(y, src->readIntReg(y));
//Restore src's GL, CWP
src->setMiscRegNoEffect(MISCREG_GL, old_gl);
src->setMiscRegNoEffect(MISCREG_CWP, old_cwp);
// Then loop through the floating point registers.
for (int i = 0; i < SparcISA::NumFloatArchRegs; ++i) {
dest->setFloatRegBits(i, src->readFloatRegBits(i));
}
// Copy misc. registers
copyMiscRegs(src, dest);
// Lastly copy PC/NPC
dest->setPC(src->readPC());
dest->setNextPC(src->readNextPC());
dest->setNextNPC(src->readNextNPC());
}
} //namespace SPARC_ISA
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