x86_cpu.cc File Reference

#include "cpu/kvm/x86_cpu.hh"
#include <linux/kvm.h>
#include <algorithm>
#include <cerrno>
#include <memory>
#include "arch/registers.hh"
#include "arch/x86/cpuid.hh"
#include "arch/x86/faults.hh"
#include "arch/x86/interrupts.hh"
#include "arch/x86/regs/msr.hh"
#include "arch/x86/utility.hh"
#include "cpu/kvm/base.hh"
#include "debug/Drain.hh"
#include "debug/Kvm.hh"
#include "debug/KvmContext.hh"
#include "debug/KvmIO.hh"
#include "debug/KvmInt.hh"

Go to the source code of this file.

Classes
struct	FXSave

Macros
#define	MSR_TSC   0x10
#define	IO_PCI_CONF_ADDR   0xCF8
#define	IO_PCI_CONF_DATA_BASE   0xCFC
#define	SEG_SYS_TYPE_TSS_AVAILABLE   9
#define	SEG_SYS_TYPE_TSS_BUSY   11
#define	SEG_CS_TYPE_ACCESSED   9
#define	SEG_CS_TYPE_READ_ACCESSED   11
#define	SEG_TYPE_BIT_ACCESSED   1
#define	FOREACH_IREG()
#define	FOREACH_SREG()
#define	FOREACH_DREG()
#define	FOREACH_SEGMENT()
#define	FOREACH_DTABLE()
#define	APPLY_IREG(kreg, mreg)   inform("\t" # kreg ": 0x%llx\n", regs.kreg)
#define	APPLY_SREG(kreg, mreg)   inform("\t" # kreg ": 0x%llx\n", sregs.kreg);
#define	APPLY_SEGMENT(kreg, idx)   dumpKvm(# kreg, sregs.kreg);
#define	APPLY_DTABLE(kreg, idx)   dumpKvm(# kreg, sregs.kreg);
#define	APPLY_IREG(kreg, mreg)   regs.kreg = tc->readIntReg(mreg)
#define	APPLY_SREG(kreg, mreg)   sregs.kreg = tc->readMiscRegNoEffect(mreg)
#define	APPLY_SEGMENT(kreg, idx)   setKvmSegmentReg(tc, sregs.kreg, idx)
#define	APPLY_DTABLE(kreg, idx)   setKvmDTableReg(tc, sregs.kreg, idx)
#define	APPLY_SEGMENT(kreg, idx)   checkSeg(# kreg, idx + MISCREG_SEG_SEL_BASE, sregs.kreg, sregs)
#define	APPLY_IREG(kreg, mreg)   tc->setIntReg(mreg, regs.kreg)
#define	APPLY_SREG(kreg, mreg)   tc->setMiscRegNoEffect(mreg, sregs.kreg)
#define	APPLY_SEGMENT(kreg, idx)   setContextSegment(tc, sregs.kreg, idx)
#define	APPLY_DTABLE(kreg, idx)   setContextSegment(tc, sregs.kreg, idx)

Functions
template<typename STRUCT , typename ENTRY >
static STRUCT *	newVarStruct (size_t entries)
static void	dumpKvm (const struct kvm_regs &regs)
static void	dumpKvm (const char *reg_name, const struct kvm_segment &seg)
static void	dumpKvm (const char *reg_name, const struct kvm_dtable &dtable)
static void	dumpKvm (const struct kvm_sregs &sregs)
static void	dumpFpuSpec (const struct FXSave &xs)
static void	dumpFpuSpec (const struct kvm_fpu &fpu)
template<typename T >
static void	dumpFpuCommon (const T &fpu)
static void	dumpKvm (const struct kvm_fpu &fpu)
static void	dumpKvm (const struct kvm_xsave &xsave)
static void	dumpKvm (const struct kvm_msrs &msrs)
static void	dumpKvm (const struct kvm_xcrs &regs)
static void	dumpKvm (const struct kvm_vcpu_events &events)
static bool	isCanonicalAddress (uint64_t addr)
static void	checkSeg (const char *name, const int idx, const struct kvm_segment &seg, struct kvm_sregs sregs)
static void	setKvmSegmentReg (ThreadContext *tc, struct kvm_segment &kvm_seg, const int index)
static void	setKvmDTableReg (ThreadContext *tc, struct kvm_dtable &kvm_dtable, const int index)
static void	forceSegAccessed (struct kvm_segment &seg)
template<typename T >
static void	updateKvmStateFPUCommon (ThreadContext *tc, T &fpu)
void	setContextSegment (ThreadContext *tc, const struct kvm_segment &kvm_seg, const int index)
void	setContextSegment (ThreadContext *tc, const struct kvm_dtable &kvm_dtable, const int index)
template<typename T >
static void	updateThreadContextFPUCommon (ThreadContext *tc, const T &fpu)
static struct kvm_cpuid_entry2	makeKvmCpuid (uint32_t function, uint32_t index, CpuidResult &result)

Variables
struct FXSave	M5_ATTR_PACKED

Macro Definition Documentation

APPLY_DTABLE [1/3]

#define APPLY_DTABLE	(		kreg,
			idx
	)		dumpKvm(# kreg, sregs.kreg);

APPLY_DTABLE [2/3]

#define APPLY_DTABLE	(		kreg,
			idx
	)		setKvmDTableReg(tc, sregs.kreg, idx)

APPLY_DTABLE [3/3]

#define APPLY_DTABLE	(		kreg,
			idx
	)		setContextSegment(tc, sregs.kreg, idx)

APPLY_IREG [1/3]

#define APPLY_IREG	(		kreg,
			mreg
	)		inform("\t" # kreg ": 0x%llx\n", regs.kreg)

APPLY_IREG [2/3]

#define APPLY_IREG	(		kreg,
			mreg
	)		regs.kreg = tc->readIntReg(mreg)

APPLY_IREG [3/3]

#define APPLY_IREG	(		kreg,
			mreg
	)		tc->setIntReg(mreg, regs.kreg)

APPLY_SEGMENT [1/4]

#define APPLY_SEGMENT	(		kreg,
			idx
	)		dumpKvm(# kreg, sregs.kreg);

APPLY_SEGMENT [2/4]

#define APPLY_SEGMENT	(		kreg,
			idx
	)		setKvmSegmentReg(tc, sregs.kreg, idx)

APPLY_SEGMENT [3/4]

#define APPLY_SEGMENT	(		kreg,
			idx
	)		checkSeg(# kreg, idx + MISCREG_SEG_SEL_BASE, sregs.kreg, sregs)

APPLY_SEGMENT [4/4]

#define APPLY_SEGMENT	(		kreg,
			idx
	)		setContextSegment(tc, sregs.kreg, idx)

APPLY_SREG [1/3]

#define APPLY_SREG	(		kreg,
			mreg
	)		inform("\t" # kreg ": 0x%llx\n", sregs.kreg);

APPLY_SREG [2/3]

#define APPLY_SREG	(		kreg,
			mreg
	)		sregs.kreg = tc->readMiscRegNoEffect(mreg)

APPLY_SREG [3/3]

#define APPLY_SREG	(		kreg,
			mreg
	)		tc->setMiscRegNoEffect(mreg, sregs.kreg)

FOREACH_DREG

#define FOREACH_DREG

(

)

Value:

    do {                                        \
        APPLY_DREG(db[0], MISCREG_DR0);         \
        APPLY_DREG(db[1], MISCREG_DR1);         \
        APPLY_DREG(db[2], MISCREG_DR2);         \
        APPLY_DREG(db[3], MISCREG_DR3);         \
        APPLY_DREG(dr6, MISCREG_DR6);           \
        APPLY_DREG(dr7, MISCREG_DR7);           \
    } while (0)

Definition at line 135 of file x86_cpu.cc.

FOREACH_DTABLE

#define FOREACH_DTABLE

(

)

Value:

    do {                                                        \
        APPLY_DTABLE(gdt, MISCREG_TSG - MISCREG_SEG_SEL_BASE);  \
        APPLY_DTABLE(idt, MISCREG_IDTR - MISCREG_SEG_SEL_BASE); \
    } while (0)

Definition at line 157 of file x86_cpu.cc.

FOREACH_IREG

#define FOREACH_IREG

(

)

Value:

    do {                                        \
        APPLY_IREG(rax, INTREG_RAX);            \
        APPLY_IREG(rbx, INTREG_RBX);            \
        APPLY_IREG(rcx, INTREG_RCX);            \
        APPLY_IREG(rdx, INTREG_RDX);            \
        APPLY_IREG(rsi, INTREG_RSI);            \
        APPLY_IREG(rdi, INTREG_RDI);            \
        APPLY_IREG(rsp, INTREG_RSP);            \
        APPLY_IREG(rbp, INTREG_RBP);            \
        APPLY_IREG(r8, INTREG_R8);              \
        APPLY_IREG(r9, INTREG_R9);              \
        APPLY_IREG(r10, INTREG_R10);            \
        APPLY_IREG(r11, INTREG_R11);            \
        APPLY_IREG(r12, INTREG_R12);            \
        APPLY_IREG(r13, INTREG_R13);            \
        APPLY_IREG(r14, INTREG_R14);            \
        APPLY_IREG(r15, INTREG_R15);            \
    } while (0)

Definition at line 104 of file x86_cpu.cc.

FOREACH_SEGMENT

#define FOREACH_SEGMENT

(

)

Value:

    do {                                                        \
        APPLY_SEGMENT(cs, MISCREG_CS - MISCREG_SEG_SEL_BASE);   \
        APPLY_SEGMENT(ds, MISCREG_DS - MISCREG_SEG_SEL_BASE);   \
        APPLY_SEGMENT(es, MISCREG_ES - MISCREG_SEG_SEL_BASE);   \
        APPLY_SEGMENT(fs, MISCREG_FS - MISCREG_SEG_SEL_BASE);   \
        APPLY_SEGMENT(gs, MISCREG_GS - MISCREG_SEG_SEL_BASE);   \
        APPLY_SEGMENT(ss, MISCREG_SS - MISCREG_SEG_SEL_BASE);   \
        APPLY_SEGMENT(tr, MISCREG_TR - MISCREG_SEG_SEL_BASE);   \
        APPLY_SEGMENT(ldt, MISCREG_TSL - MISCREG_SEG_SEL_BASE); \
    } while (0)

Definition at line 145 of file x86_cpu.cc.

FOREACH_SREG

#define FOREACH_SREG

(

)

Value:

    do {                                                \
        APPLY_SREG(cr0, MISCREG_CR0);                   \
        APPLY_SREG(cr2, MISCREG_CR2);                   \
        APPLY_SREG(cr3, MISCREG_CR3);                   \
        APPLY_SREG(cr4, MISCREG_CR4);                   \
        APPLY_SREG(cr8, MISCREG_CR8);                   \
        APPLY_SREG(efer, MISCREG_EFER);                 \
        APPLY_SREG(apic_base, MISCREG_APIC_BASE);       \
    } while (0)

Definition at line 124 of file x86_cpu.cc.

IO_PCI_CONF_ADDR

#define IO_PCI_CONF_ADDR   0xCF8

Definition at line 54 of file x86_cpu.cc.

IO_PCI_CONF_DATA_BASE

#define IO_PCI_CONF_DATA_BASE   0xCFC

Definition at line 55 of file x86_cpu.cc.

MSR_TSC

#define MSR_TSC   0x10

Definition at line 52 of file x86_cpu.cc.

SEG_CS_TYPE_ACCESSED

#define SEG_CS_TYPE_ACCESSED   9

Definition at line 63 of file x86_cpu.cc.

SEG_CS_TYPE_READ_ACCESSED

#define SEG_CS_TYPE_READ_ACCESSED   11

Definition at line 65 of file x86_cpu.cc.

SEG_SYS_TYPE_TSS_AVAILABLE

#define SEG_SYS_TYPE_TSS_AVAILABLE   9

Definition at line 58 of file x86_cpu.cc.

SEG_SYS_TYPE_TSS_BUSY

#define SEG_SYS_TYPE_TSS_BUSY   11

Definition at line 60 of file x86_cpu.cc.

SEG_TYPE_BIT_ACCESSED

#define SEG_TYPE_BIT_ACCESSED   1

Definition at line 69 of file x86_cpu.cc.

Function Documentation

checkSeg()

static void checkSeg ( const char *  name, const int  idx, const struct kvm_segment &  seg, struct kvm_sregs  sregs  )

static

Definition at line 381 of file x86_cpu.cc.

References isCanonicalAddress(), M5_FALLTHROUGH, X86ISA::MISCREG_CS, X86ISA::MISCREG_DS, X86ISA::MISCREG_ES, X86ISA::MISCREG_FS, X86ISA::MISCREG_GS, X86ISA::MISCREG_SS, X86ISA::MISCREG_TR, X86ISA::MISCREG_TSL, name(), X86ISA::seg, and warn.

dumpFpuCommon()

template<typename T >

static void dumpFpuCommon ( const T &  fpu )

static

Definition at line 260 of file x86_cpu.cc.

References X86ISA::BusyBit, X86ISA::CC0Bit, X86ISA::CC1Bit, X86ISA::CC2Bit, X86ISA::CC3Bit, X86ISA::DEBit, dumpFpuSpec(), X86ISA::ErrSummaryBit, ArmISA::i, X86ISA::IEBit, inform, ArmISA::j, X86ISA::loadFloat80(), X86ISA::OEBit, X86ISA::PEBit, X86ISA::StackFaultBit, X86ISA::UEBit, and X86ISA::ZEBit.

Referenced by dumpKvm().

dumpFpuSpec() [1/2]

static void dumpFpuSpec ( const struct FXSave &  xs )

static

Definition at line 244 of file x86_cpu.cc.

References inform, and RiscvISA::xs.

Referenced by dumpFpuCommon().

dumpFpuSpec() [2/2]

static void dumpFpuSpec ( const struct kvm_fpu &  fpu )

static

Definition at line 252 of file x86_cpu.cc.

References inform.

dumpKvm() [1/9]

static void dumpKvm ( const char *  reg_name, const struct kvm_dtable &  dtable  )

static

Definition at line 196 of file x86_cpu.cc.

References inform.

dumpKvm() [2/9]

static void dumpKvm ( const char *  reg_name, const struct kvm_segment &  seg  )

static

Definition at line 186 of file x86_cpu.cc.

References inform, and X86ISA::seg.

dumpKvm() [3/9]

static void dumpKvm ( const struct kvm_fpu &  fpu )

static

Definition at line 310 of file x86_cpu.cc.

References dumpFpuCommon(), and inform.

dumpKvm() [4/9]

static void dumpKvm ( const struct kvm_msrs &  msrs )

static

Definition at line 324 of file x86_cpu.cc.

References X86ISA::e, ArmISA::i, and inform.

dumpKvm() [5/9]

static void dumpKvm ( const struct kvm_regs &  regs )

static

Definition at line 170 of file x86_cpu.cc.

References FOREACH_IREG, and inform.

Referenced by X86KvmCPU::dumpDebugRegs(), X86KvmCPU::dumpFpuRegs(), X86KvmCPU::dumpIntRegs(), X86KvmCPU::dumpMSRs(), X86KvmCPU::dumpSpecRegs(), X86KvmCPU::dumpVCpuEvents(), X86KvmCPU::dumpXCRs(), and X86KvmCPU::dumpXSave().

dumpKvm() [6/9]

static void dumpKvm ( const struct kvm_sregs &  sregs )

static

Definition at line 203 of file x86_cpu.cc.

References FOREACH_DTABLE, FOREACH_SEGMENT, FOREACH_SREG, ArmISA::i, and inform.

dumpKvm() [7/9]

static void dumpKvm ( const struct kvm_vcpu_events &  events )

static

Definition at line 349 of file x86_cpu.cc.

References inform.

dumpKvm() [8/9]

static void dumpKvm ( const struct kvm_xcrs &  regs )

static

Definition at line 336 of file x86_cpu.cc.

References ArmISA::i, and inform.

dumpKvm() [9/9]

static void dumpKvm ( const struct kvm_xsave &  xsave )

static

Definition at line 317 of file x86_cpu.cc.

References dumpFpuCommon(), and inform.

forceSegAccessed()

static void forceSegAccessed ( struct kvm_segment &  seg )

static

Definition at line 743 of file x86_cpu.cc.

References X86ISA::seg, and SEG_TYPE_BIT_ACCESSED.

Referenced by X86KvmCPU::updateKvmStateSRegs().

isCanonicalAddress()

static bool isCanonicalAddress ( uint64_t  addr )

static

Definition at line 370 of file x86_cpu.cc.

References X86ISA::addr.

Referenced by checkSeg().

makeKvmCpuid()

static struct kvm_cpuid_entry2 makeKvmCpuid ( uint32_t  function, uint32_t  index, CpuidResult &  result  )

static

Definition at line 1408 of file x86_cpu.cc.

References ArmISA::e, and MipsISA::index.

Referenced by X86KvmCPU::updateCPUID().

newVarStruct()

template<typename STRUCT , typename ENTRY >

static STRUCT* newVarStruct ( size_t  entries )

static

Definition at line 164 of file x86_cpu.cc.

setContextSegment() [1/2]

void setContextSegment ( ThreadContext *  tc, const struct kvm_dtable &  kvm_dtable, const int  index  )

inline

Definition at line 1015 of file x86_cpu.cc.

References MipsISA::index, X86ISA::MISCREG_SEG_BASE(), X86ISA::MISCREG_SEG_LIMIT(), and ThreadContext::setMiscReg().

setContextSegment() [2/2]

void setContextSegment ( ThreadContext *  tc, const struct kvm_segment &  kvm_seg, const int  index  )

inline

Definition at line 990 of file x86_cpu.cc.

References ArmISA::attr, MipsISA::index, X86ISA::MISCREG_SEG_ATTR(), X86ISA::MISCREG_SEG_BASE(), X86ISA::MISCREG_SEG_LIMIT(), X86ISA::MISCREG_SEG_SEL(), and ThreadContext::setMiscReg().

setKvmDTableReg()

static void setKvmDTableReg ( ThreadContext *  tc, struct kvm_dtable &  kvm_dtable, const int  index  )

inlinestatic

Definition at line 735 of file x86_cpu.cc.

References MipsISA::index, X86ISA::MISCREG_SEG_BASE(), X86ISA::MISCREG_SEG_LIMIT(), and ThreadContext::readMiscRegNoEffect().

setKvmSegmentReg()

static void setKvmSegmentReg ( ThreadContext *  tc, struct kvm_segment &  kvm_seg, const int  index  )

inlinestatic

Definition at line 710 of file x86_cpu.cc.

References ArmISA::attr, MipsISA::index, X86ISA::MISCREG_SEG_ATTR(), X86ISA::MISCREG_SEG_BASE(), X86ISA::MISCREG_SEG_LIMIT(), X86ISA::MISCREG_SEG_SEL(), and ThreadContext::readMiscRegNoEffect().

updateKvmStateFPUCommon()

template<typename T >

static void updateKvmStateFPUCommon ( ThreadContext *  tc, T &  fpu  )

static

Definition at line 824 of file x86_cpu.cc.

References bitsToFloat64(), X86ISA::convX87TagsToXTags(), DPRINTF, X86ISA::FLOATREG_FPR(), X86ISA::FLOATREG_XMM_HIGH(), X86ISA::FLOATREG_XMM_LOW(), ArmISA::i, X86ISA::MISCREG_FCW, X86ISA::MISCREG_FOP, X86ISA::MISCREG_FSW, X86ISA::MISCREG_FTW, X86ISA::MISCREG_MXCSR, ThreadContext::readFloatReg(), ThreadContext::readMiscReg(), ThreadContext::readMiscRegNoEffect(), and X86ISA::storeFloat80().

Referenced by X86KvmCPU::updateKvmStateFPULegacy(), and X86KvmCPU::updateKvmStateFPUXSave().

updateThreadContextFPUCommon()

template<typename T >

static void updateThreadContextFPUCommon ( ThreadContext *  tc, const T &  fpu  )

static

Definition at line 1044 of file x86_cpu.cc.

References X86ISA::convX87XTagsToTags(), DPRINTF, X86ISA::FLOATREG_FPR(), X86ISA::FLOATREG_XMM_HIGH(), X86ISA::FLOATREG_XMM_LOW(), floatToBits64(), ArmISA::i, X86ISA::loadFloat80(), X86ISA::MISCREG_FCW, X86ISA::MISCREG_FOP, X86ISA::MISCREG_FSW, X86ISA::MISCREG_FTAG, X86ISA::MISCREG_FTW, X86ISA::MISCREG_MXCSR, X86ISA::MISCREG_X87_TOP, ThreadContext::setFloatReg(), and ThreadContext::setMiscRegNoEffect().

Referenced by X86KvmCPU::updateThreadContextFPU(), and X86KvmCPU::updateThreadContextXSave().

Variable Documentation

M5_ATTR_PACKED

struct FXSave M5_ATTR_PACKED