MCRegisterInfo.c File Reference

#include "MCRegisterInfo.h"

Go to the source code of this file.

Classes
struct	DiffListIterator

Typedefs
typedef struct DiffListIterator	DiffListIterator

Functions
void	MCRegisterInfo_InitMCRegisterInfo (MCRegisterInfo *RI, const MCRegisterDesc *D, unsigned NR, unsigned RA, unsigned PC, const MCRegisterClass *C, unsigned NC, uint16_t(*RURoots)[2], unsigned NRU, const MCPhysReg *DL, const char *Strings, const uint16_t *SubIndices, unsigned NumIndices, const uint16_t *RET)
static void	DiffListIterator_init (DiffListIterator *d, MCPhysReg InitVal, const MCPhysReg *DiffList)
static uint16_t	DiffListIterator_getVal (DiffListIterator *d)
static bool	DiffListIterator_next (DiffListIterator *d)
static bool	DiffListIterator_isValid (DiffListIterator *d)
unsigned	MCRegisterInfo_getMatchingSuperReg (const MCRegisterInfo *RI, unsigned Reg, unsigned SubIdx, const MCRegisterClass *RC)
unsigned	MCRegisterInfo_getSubReg (const MCRegisterInfo *RI, unsigned Reg, unsigned Idx)
const MCRegisterClass *	MCRegisterInfo_getRegClass (const MCRegisterInfo *RI, unsigned i)
bool	MCRegisterClass_contains (const MCRegisterClass *c, unsigned Reg)

Typedef Documentation

DiffListIterator

typedef struct DiffListIterator DiffListIterator

DiffListIterator - Base iterator class that can traverse the differentially encoded register and regunit lists in DiffLists. Don't use this class directly, use one of the specialized sub-classes defined below.

Function Documentation

DiffListIterator_getVal()

static uint16_t DiffListIterator_getVal ( DiffListIterator *  d )

static

Definition at line 59 of file MCRegisterInfo.c.

{
    return d->Val;
}

References d.

Referenced by MCRegisterInfo_getMatchingSuperReg(), and MCRegisterInfo_getSubReg().

DiffListIterator_init()

static void DiffListIterator_init ( DiffListIterator *  d, MCPhysReg  InitVal, const MCPhysReg *  DiffList  )

static

Definition at line 53 of file MCRegisterInfo.c.

{
    d->Val = InitVal;
    d->List = DiffList;
}

References d.

Referenced by MCRegisterInfo_getMatchingSuperReg(), and MCRegisterInfo_getSubReg().

DiffListIterator_isValid()

static bool DiffListIterator_isValid ( DiffListIterator *  d )

static

Definition at line 81 of file MCRegisterInfo.c.

{
    return (d->List != 0);
}

References d.

Referenced by MCRegisterInfo_getMatchingSuperReg(), and MCRegisterInfo_getSubReg().

DiffListIterator_next()

static bool DiffListIterator_next ( DiffListIterator *  d )

static

Definition at line 64 of file MCRegisterInfo.c.

{
    MCPhysReg D;
 
    if (d->List == 0)
        return false;
 
    D = *d->List;
    d->List++;
    d->Val += D;
 
    if (!D)
        d->List = 0;
 
    return (D != 0);
}

References D, and d.

Referenced by MCRegisterInfo_getMatchingSuperReg(), and MCRegisterInfo_getSubReg().

MCRegisterClass_contains()

bool MCRegisterClass_contains	(	const MCRegisterClass *	c,
		unsigned	Reg
	)

Definition at line 134 of file MCRegisterInfo.c.

{
    unsigned InByte = Reg % 8;
    unsigned Byte = Reg / 8;
 
    if (Byte >= c->RegSetSize)
        return false;
 
    return (c->RegSet[Byte] & (1 << InByte)) != 0;
}

References c.

Referenced by MCRegisterInfo_getMatchingSuperReg().

MCRegisterInfo_getMatchingSuperReg()

unsigned MCRegisterInfo_getMatchingSuperReg	(	const MCRegisterInfo *	RI,
		unsigned	Reg,
		unsigned	SubIdx,
		const MCRegisterClass *	RC
	)

Definition at line 86 of file MCRegisterInfo.c.

{
    DiffListIterator iter;
 
    if (Reg >= RI->NumRegs) {
        return 0;
    }
 
    DiffListIterator_init(&iter, (MCPhysReg)Reg, RI->DiffLists + RI->Desc[Reg].SuperRegs);
    DiffListIterator_next(&iter);
 
    while(DiffListIterator_isValid(&iter)) {
        uint16_t val = DiffListIterator_getVal(&iter);
        if (MCRegisterClass_contains(RC, val) && Reg ==  MCRegisterInfo_getSubReg(RI, val, SubIdx))
            return val;
 
        DiffListIterator_next(&iter);
    }
 
    return 0;
}

References MCRegisterInfo::Desc, DiffListIterator_getVal(), DiffListIterator_init(), DiffListIterator_isValid(), DiffListIterator_next(), MCRegisterInfo::DiffLists, MCRegisterClass_contains(), MCRegisterInfo_getSubReg(), MCRegisterInfo::NumRegs, MCRegisterDesc::SuperRegs, and val.

MCRegisterInfo_getRegClass()

const MCRegisterClass* MCRegisterInfo_getRegClass	(	const MCRegisterInfo *	RI,
		unsigned	i
	)

Definition at line 126 of file MCRegisterInfo.c.

{
    //assert(i < getNumRegClasses() && "Register Class ID out of range");
    if (i >= RI->NumClasses)
        return 0;
    return &(RI->Classes[i]);
}

References MCRegisterInfo::Classes, i, and MCRegisterInfo::NumClasses.

MCRegisterInfo_getSubReg()

unsigned MCRegisterInfo_getSubReg	(	const MCRegisterInfo *	RI,
		unsigned	Reg,
		unsigned	Idx
	)

Definition at line 108 of file MCRegisterInfo.c.

{
    DiffListIterator iter;
    const uint16_t *SRI = RI->SubRegIndices + RI->Desc[Reg].SubRegIndices;
 
    DiffListIterator_init(&iter, (MCPhysReg)Reg, RI->DiffLists + RI->Desc[Reg].SubRegs);
    DiffListIterator_next(&iter);
 
    while(DiffListIterator_isValid(&iter)) {
        if (*SRI == Idx)
            return DiffListIterator_getVal(&iter);
        DiffListIterator_next(&iter);
        ++SRI;
    }
 
    return 0;
}

References MCRegisterInfo::Desc, DiffListIterator_getVal(), DiffListIterator_init(), DiffListIterator_isValid(), DiffListIterator_next(), MCRegisterInfo::DiffLists, MCRegisterDesc::SubRegIndices, MCRegisterInfo::SubRegIndices, and MCRegisterDesc::SubRegs.

Referenced by MCRegisterInfo_getMatchingSuperReg().

MCRegisterInfo_InitMCRegisterInfo()

void MCRegisterInfo_InitMCRegisterInfo	(	MCRegisterInfo *	RI,
		const MCRegisterDesc *	D,
		unsigned	NR,
		unsigned	RA,
		unsigned	PC,
		const MCRegisterClass *	C,
		unsigned	NC,
		uint16_t(*)	RURoots[2],
		unsigned	NRU,
		const MCPhysReg *	DL,
		const char *	Strings,
		const uint16_t *	SubIndices,
		unsigned	NumIndices,
		const uint16_t *	RET
	)

Definition at line 28 of file MCRegisterInfo.c.

{
    RI->Desc = D;
    RI->NumRegs = NR;
    RI->RAReg = RA;
    RI->PCReg = PC;
    RI->Classes = C;
    RI->DiffLists = DL;
    RI->RegStrings = Strings;
    RI->NumClasses = NC;
    RI->RegUnitRoots = RURoots;
    RI->NumRegUnits = NRU;
    RI->SubRegIndices = SubIndices;
    RI->NumSubRegIndices = NumIndices;
    RI->RegEncodingTable = RET;
}

References C, MCRegisterInfo::Classes, D, MCRegisterInfo::Desc, MCRegisterInfo::DiffLists, NC, MCRegisterInfo::NumClasses, MCRegisterInfo::NumRegs, MCRegisterInfo::NumRegUnits, MCRegisterInfo::NumSubRegIndices, PC, MCRegisterInfo::PCReg, MCRegisterInfo::RAReg, MCRegisterInfo::RegEncodingTable, MCRegisterInfo::RegStrings, MCRegisterInfo::RegUnitRoots, RET, and MCRegisterInfo::SubRegIndices.