dwarfinfo.c File Reference

#include <ntifs.h>
#include <ndk/ntndk.h>
#include <reactos/rossym.h>
#include "rossympriv.h"
#include <ntimage.h>
#include <debug.h>
#include "dwarf.h"
#include <windef.h>

Include dependency graph for dwarfinfo.c:

Go to the source code of this file.

Classes
struct	Parse

Macros
#define	NTOSAPI
#define	NDEBUG
#define	OFFSET(x)   offsetof(DwarfAttrs, x), offsetof(DwarfAttrs, have.x)

Typedefs
typedef struct Parse	Parse

Enumerations
enum	{   DwarfAttrSibling = 0x01 , DwarfAttrLocation = 0x02 , DwarfAttrName = 0x03 , DwarfAttrOrdering = 0x09 ,   DwarfAttrByteSize = 0x0B , DwarfAttrBitOffset = 0x0C , DwarfAttrBitSize = 0x0D , DwarfAttrStmtList = 0x10 ,   DwarfAttrLowpc = 0x11 , DwarfAttrHighpc = 0x12 , DwarfAttrLanguage = 0x13 , DwarfAttrDiscr = 0x15 ,   DwarfAttrDiscrValue = 0x16 , DwarfAttrVisibility = 0x17 , DwarfAttrImport = 0x18 , DwarfAttrStringLength = 0x19 ,   DwarfAttrCommonRef = 0x1A , DwarfAttrCompDir = 0x1B , DwarfAttrConstValue = 0x1C , DwarfAttrContainingType = 0x1D ,   DwarfAttrDefaultValue = 0x1E , DwarfAttrInline = 0x20 , DwarfAttrIsOptional = 0x21 , DwarfAttrLowerBound = 0x22 ,   DwarfAttrProducer = 0x25 , DwarfAttrPrototyped = 0x27 , DwarfAttrReturnAddr = 0x2A , DwarfAttrStartScope = 0x2C ,   DwarfAttrStrideSize = 0x2E , DwarfAttrUpperBound = 0x2F , DwarfAttrAbstractOrigin = 0x31 , DwarfAttrAccessibility = 0x32 ,   DwarfAttrAddrClass = 0x33 , DwarfAttrArtificial = 0x34 , DwarfAttrBaseTypes = 0x35 , DwarfAttrCalling = 0x36 ,   DwarfAttrCount = 0x37 , DwarfAttrDataMemberLoc = 0x38 , DwarfAttrDeclColumn = 0x39 , DwarfAttrDeclFile = 0x3A ,   DwarfAttrDeclLine = 0x3B , DwarfAttrDeclaration = 0x3C , DwarfAttrDiscrList = 0x3D , DwarfAttrEncoding = 0x3E ,   DwarfAttrExternal = 0x3F , DwarfAttrFrameBase = 0x40 , DwarfAttrFriend = 0x41 , DwarfAttrIdentifierCase = 0x42 ,   DwarfAttrMacroInfo = 0x43 , DwarfAttrNamelistItem = 0x44 , DwarfAttrPriority = 0x45 , DwarfAttrSegment = 0x46 ,   DwarfAttrSpecification = 0x47 , DwarfAttrStaticLink = 0x48 , DwarfAttrType = 0x49 , DwarfAttrUseLocation = 0x4A ,   DwarfAttrVarParam = 0x4B , DwarfAttrVirtuality = 0x4C , DwarfAttrVtableElemLoc = 0x4D , DwarfAttrAllocated = 0x4E ,   DwarfAttrAssociated = 0x4F , DwarfAttrDataLocation = 0x50 , DwarfAttrStride = 0x51 , DwarfAttrEntrypc = 0x52 ,   DwarfAttrUseUTF8 = 0x53 , DwarfAttrExtension = 0x54 , DwarfAttrRanges = 0x55 , DwarfAttrTrampoline = 0x56 ,   DwarfAttrCallColumn = 0x57 , DwarfAttrCallFile = 0x58 , DwarfAttrCallLine = 0x59 , DwarfAttrDescription = 0x5A ,   DwarfAttrMax , FormAddr = 0x01 , FormDwarfBlock2 = 0x03 , FormDwarfBlock4 = 0x04 ,   FormData2 = 0x05 , FormData4 = 0x06 , FormData8 = 0x07 , FormString = 0x08 ,   FormDwarfBlock = 0x09 , FormDwarfBlock1 = 0x0A , FormData1 = 0x0B , FormFlag = 0x0C ,   FormSdata = 0x0D , FormStrp = 0x0E , FormUdata = 0x0F , FormRefAddr = 0x10 ,   FormRef1 = 0x11 , FormRef2 = 0x12 , FormRef4 = 0x13 , FormRef8 = 0x14 ,   FormRefUdata = 0x15 , FormIndirect = 0x16 }

Functions
static int	parseattrs (DwarfBuf *, ulong, DwarfAbbrev *, DwarfAttrs *)
static int	getulong (DwarfBuf *, int, ulong, ulong *, int *)
static int	getuchar (DwarfBuf *, int, uchar *)
static int	getstring (DwarfBuf *, int, char **)
static int	getblock (DwarfBuf *, int, DwarfBlock *)
static int	skipform (DwarfBuf *, int)
static int	constblock (Dwarf *, DwarfBlock *, ulong *)
int	dwarflookupnameinunit (Dwarf *d, ulong unit, char *name, DwarfSym *s)
int	dwarflookupsubname (Dwarf *d, DwarfSym *parent, char *name, DwarfSym *s)
int	dwarflookuptag (Dwarf *d, ulong unit, ulong tag, DwarfSym *s)
int	dwarfseeksym (Dwarf *d, ulong unit, ulong off, DwarfSym *s)
int	dwarflookupfn (Dwarf *d, ulong unit, ulong pc, DwarfSym *s)
int	dwarfenumunit (Dwarf *d, ulong unit, DwarfSym *s)
int	dwarfenum (Dwarf *d, DwarfSym *s)
int	dwarfnextsym (Dwarf *d, DwarfSym *s)
int	dwarfnextsymat (Dwarf *d, DwarfSym *s, int depth)

Variables
static Parse	plist []
static Parse	ptab [DwarfAttrMax]

Macro Definition Documentation

NDEBUG

#define NDEBUG

Definition at line 12 of file dwarfinfo.c.

NTOSAPI

#define NTOSAPI

Definition at line 5 of file dwarfinfo.c.

OFFSET

#define OFFSET

(

x

)

offsetof(DwarfAttrs, x), offsetof(DwarfAttrs, have.x)

Definition at line 338 of file dwarfinfo.c.

Typedef Documentation

Parse

typedef struct Parse Parse

Definition at line 330 of file dwarfinfo.c.

Enumeration Type Documentation

anonymous enum

anonymous enum

Enumerator
DwarfAttrSibling
DwarfAttrLocation
DwarfAttrName
DwarfAttrOrdering
DwarfAttrByteSize
DwarfAttrBitOffset
DwarfAttrBitSize
DwarfAttrStmtList
DwarfAttrLowpc
DwarfAttrHighpc
DwarfAttrLanguage
DwarfAttrDiscr
DwarfAttrDiscrValue
DwarfAttrVisibility
DwarfAttrImport
DwarfAttrStringLength
DwarfAttrCommonRef
DwarfAttrCompDir
DwarfAttrConstValue
DwarfAttrContainingType
DwarfAttrDefaultValue
DwarfAttrInline
DwarfAttrIsOptional
DwarfAttrLowerBound
DwarfAttrProducer
DwarfAttrPrototyped
DwarfAttrReturnAddr
DwarfAttrStartScope
DwarfAttrStrideSize
DwarfAttrUpperBound
DwarfAttrAbstractOrigin
DwarfAttrAccessibility
DwarfAttrAddrClass
DwarfAttrArtificial
DwarfAttrBaseTypes
DwarfAttrCalling
DwarfAttrCount
DwarfAttrDataMemberLoc
DwarfAttrDeclColumn
DwarfAttrDeclFile
DwarfAttrDeclLine
DwarfAttrDeclaration
DwarfAttrDiscrList
DwarfAttrEncoding
DwarfAttrExternal
DwarfAttrFrameBase
DwarfAttrFriend
DwarfAttrIdentifierCase
DwarfAttrMacroInfo
DwarfAttrNamelistItem
DwarfAttrPriority
DwarfAttrSegment
DwarfAttrSpecification
DwarfAttrStaticLink
DwarfAttrType
DwarfAttrUseLocation
DwarfAttrVarParam
DwarfAttrVirtuality
DwarfAttrVtableElemLoc
DwarfAttrAllocated
DwarfAttrAssociated
DwarfAttrDataLocation
DwarfAttrStride
DwarfAttrEntrypc
DwarfAttrUseUTF8
DwarfAttrExtension
DwarfAttrRanges
DwarfAttrTrampoline
DwarfAttrCallColumn
DwarfAttrCallFile
DwarfAttrCallLine
DwarfAttrDescription
DwarfAttrMax
FormAddr
FormDwarfBlock2
FormDwarfBlock4
FormData2
FormData4
FormData8
FormString
FormDwarfBlock
FormDwarfBlock1
FormData1
FormFlag
FormSdata
FormStrp
FormUdata
FormRefAddr
FormRef1
FormRef2
FormRef4
FormRef8
FormRefUdata
FormIndirect

Definition at line 18 of file dwarfinfo.c.

{
    DwarfAttrSibling = 0x01,
    DwarfAttrLocation = 0x02,
    DwarfAttrName = 0x03,
    DwarfAttrOrdering = 0x09,
    DwarfAttrByteSize = 0x0B,
    DwarfAttrBitOffset = 0x0C,
    DwarfAttrBitSize = 0x0D,
    DwarfAttrStmtList = 0x10,
    DwarfAttrLowpc = 0x11,
    DwarfAttrHighpc = 0x12,
    DwarfAttrLanguage = 0x13,
    DwarfAttrDiscr = 0x15,
    DwarfAttrDiscrValue = 0x16,
    DwarfAttrVisibility = 0x17,
    DwarfAttrImport = 0x18,
    DwarfAttrStringLength = 0x19,
    DwarfAttrCommonRef = 0x1A,
    DwarfAttrCompDir = 0x1B,
    DwarfAttrConstValue = 0x1C,
    DwarfAttrContainingType = 0x1D,
    DwarfAttrDefaultValue = 0x1E,
    DwarfAttrInline = 0x20,
    DwarfAttrIsOptional = 0x21,
    DwarfAttrLowerBound = 0x22,
    DwarfAttrProducer = 0x25,
    DwarfAttrPrototyped = 0x27,
    DwarfAttrReturnAddr = 0x2A,
    DwarfAttrStartScope = 0x2C,
    DwarfAttrStrideSize = 0x2E,
    DwarfAttrUpperBound = 0x2F,
    DwarfAttrAbstractOrigin = 0x31,
    DwarfAttrAccessibility = 0x32,
    DwarfAttrAddrClass = 0x33,
    DwarfAttrArtificial = 0x34,
    DwarfAttrBaseTypes = 0x35,
    DwarfAttrCalling = 0x36,
    DwarfAttrCount = 0x37,
    DwarfAttrDataMemberLoc = 0x38,
    DwarfAttrDeclColumn = 0x39,
    DwarfAttrDeclFile = 0x3A,
    DwarfAttrDeclLine = 0x3B,
    DwarfAttrDeclaration = 0x3C,
    DwarfAttrDiscrList = 0x3D,
    DwarfAttrEncoding = 0x3E,
    DwarfAttrExternal = 0x3F,
    DwarfAttrFrameBase = 0x40,
    DwarfAttrFriend = 0x41,
    DwarfAttrIdentifierCase = 0x42,
    DwarfAttrMacroInfo = 0x43,
    DwarfAttrNamelistItem = 0x44,
    DwarfAttrPriority = 0x45,
    DwarfAttrSegment = 0x46,
    DwarfAttrSpecification = 0x47,
    DwarfAttrStaticLink = 0x48,
    DwarfAttrType = 0x49,
    DwarfAttrUseLocation = 0x4A,
    DwarfAttrVarParam = 0x4B,
    DwarfAttrVirtuality = 0x4C,
    DwarfAttrVtableElemLoc = 0x4D,
    DwarfAttrAllocated = 0x4E,
    DwarfAttrAssociated = 0x4F,
    DwarfAttrDataLocation = 0x50,
    DwarfAttrStride = 0x51,
    DwarfAttrEntrypc = 0x52,
    DwarfAttrUseUTF8 = 0x53,
    DwarfAttrExtension = 0x54,
    DwarfAttrRanges = 0x55,
    DwarfAttrTrampoline = 0x56,
    DwarfAttrCallColumn = 0x57,
    DwarfAttrCallFile = 0x58,
    DwarfAttrCallLine = 0x59,
    DwarfAttrDescription = 0x5A,
    DwarfAttrMax,
 
    FormAddr = 0x01,
    FormDwarfBlock2 = 0x03,
    FormDwarfBlock4 = 0x04,
    FormData2 = 0x05,
    FormData4 = 0x06,
    FormData8 = 0x07,
    FormString = 0x08,
    FormDwarfBlock = 0x09,
    FormDwarfBlock1 = 0x0A,
    FormData1 = 0x0B,
    FormFlag = 0x0C,
    FormSdata = 0x0D,
    FormStrp = 0x0E,
    FormUdata = 0x0F,
    FormRefAddr = 0x10,
    FormRef1 = 0x11,
    FormRef2 = 0x12,
    FormRef4 = 0x13,
    FormRef8 = 0x14,
    FormRefUdata = 0x15,
    FormIndirect = 0x16
};

Function Documentation

constblock()

static int constblock ( Dwarf *  d, DwarfBlock *  bl, ulong *  pval  )

static

Definition at line 596 of file dwarfinfo.c.

{
    DwarfBuf b;
 
    memset(&b, 0, sizeof b);
    b.p = bl->data;
    b.ep = bl->data+bl->len;
    b.d = d;
 
    switch(dwarfget1(&b)){
    case OpAddr:
        *pval = dwarfgetaddr(&b);
        return TConstant;
    case OpConst1u:
        *pval = dwarfget1(&b);
        return TConstant;
    case OpConst1s:
        *pval = (schar)dwarfget1(&b);
        return TConstant;
    case OpConst2u:
        *pval = dwarfget2(&b);
        return TConstant;
    case OpConst2s:
        *pval = (s16int)dwarfget2(&b);
        return TConstant;
    case OpConst4u:
        *pval = dwarfget4(&b);
        return TConstant;
    case OpConst4s:
        *pval = (s32int)dwarfget4(&b);
        return TConstant;
    case OpConst8u:
        *pval = (u64int)dwarfget8(&b);
        return TConstant;
    case OpConst8s:
        *pval = (s64int)dwarfget8(&b);
        return TConstant;
    case OpConstu:
        *pval = dwarfget128(&b);
        return TConstant;
    case OpConsts:
        *pval = dwarfget128s(&b);
        return TConstant;
    case OpPlusUconst:
        *pval = dwarfget128(&b);
        return TConstant;
    default:
        return TBlock;
    }
}

Referenced by parseattrs().

dwarfenum()

int dwarfenum	(	Dwarf *	d,
		DwarfSym *	s
	)

Definition at line 242 of file dwarfinfo.c.

{
    if(dwarfenumunit(d, 0, s) < 0)
        return -1;
    s->allunits = 1;
    return 0;
}

Referenced by main().

dwarfenumunit()

int dwarfenumunit	(	Dwarf *	d,
		ulong	unit,
		DwarfSym *	s
	)

Definition at line 202 of file dwarfinfo.c.

{
    int i;
    ulong aoff, len;
 
    if(unit >= d->info.len){
        werrstr("dwarf unit address 0x%x >= 0x%x out of range", unit, d->info.len);
        return -1;
    }
    memset(s, 0, sizeof *s);
    memset(&s->b, 0, sizeof s->b);
 
    s->b.d = d;
    s->b.p = d->info.data + unit;
    s->b.ep = d->info.data + d->info.len;
    len = dwarfget4(&s->b);
    s->nextunit = unit + 4 + len;
 
    if(s->b.ep - s->b.p < len){
    badheader:
        werrstr("bad dwarf unit header at unit 0x%lux", unit);
        return -1;
    }
    s->b.ep = s->b.p+len;
    if((i=dwarfget2(&s->b)) != 2)
        goto badheader;
    aoff = dwarfget4(&s->b);
    s->b.addrsize = dwarfget1(&s->b);
    if(d->addrsize == 0)
        d->addrsize = s->b.addrsize;
    if(s->b.p == nil)
        goto badheader;
 
    s->aoff = aoff;
    s->unit = unit;
    s->depth = 0;
    return 0;
}

Referenced by dwarfargvalue(), dwarfenum(), dwarflookupfn(), dwarflookupnameinunit(), dwarflookuptag(), dwarfnextsym(), and dwarfseeksym().

dwarflookupfn()

int dwarflookupfn	(	Dwarf *	d,
		ulong	unit,
		ulong	pc,
		DwarfSym *	s
	)

Definition at line 182 of file dwarfinfo.c.

{
    if(dwarfenumunit(d, unit, s) < 0)
        return -1;
 
    if(dwarfnextsymat(d, s, 0) != 1)
        return -1;
    /* s is now the CompileUnit */
 
    while(dwarfnextsymat(d, s, 1) == 1){
        if(s->attrs.tag != TagSubprogram)
            continue;
        if(s->attrs.lowpc <= pc && pc < s->attrs.highpc)
            return 0;
    }
    werrstr("fn containing pc 0x%lux not found", pc);
    return -1;
}

dwarflookupnameinunit()

int dwarflookupnameinunit	(	Dwarf *	d,
		ulong	unit,
		char *	name,
		DwarfSym *	s
	)

Definition at line 126 of file dwarfinfo.c.

{
    if(dwarfenumunit(d, unit, s) < 0)
        return -1;
 
    dwarfnextsymat(d, s, 0);    /* s is now the CompileUnit */
    while(dwarfnextsymat(d, s, 1) == 1)
        if(s->attrs.name && strcmp(s->attrs.name, name) == 0)
            return 0;
    werrstr("symbol '%s' not found", name);
    return -1;
}

dwarflookupsubname()

int dwarflookupsubname	(	Dwarf *	d,
		DwarfSym *	parent,
		char *	name,
		DwarfSym *	s
	)

Definition at line 141 of file dwarfinfo.c.

{
    *s = *parent;
    while(dwarfnextsymat(d, s, parent->depth+1))
        if(s->attrs.name && strcmp(s->attrs.name, name) == 0)
            return 0;
    werrstr("symbol '%s' not found", name);
    return -1;
}

dwarflookuptag()

int dwarflookuptag	(	Dwarf *	d,
		ulong	unit,
		ulong	tag,
		DwarfSym *	s
	)

Definition at line 152 of file dwarfinfo.c.

{
    if(dwarfenumunit(d, unit, s) < 0) {
        return -1;
    }
 
    dwarfnextsymat(d, s, 0);    /* s is now the CompileUnit */
    if(s->attrs.tag == tag) {
        return 0;
    }
    while(dwarfnextsymat(d, s, 1) == 1)
        if(s->attrs.tag == tag) {
            return 0;
        }
    werrstr("symbol with tag 0x%lux not found", tag);
    return -1;
}

dwarfnextsym()

int dwarfnextsym	(	Dwarf *	d,
		DwarfSym *	s
	)

Definition at line 251 of file dwarfinfo.c.

{
    ulong num;
    DwarfAbbrev *a;
 
    if(s->attrs.haskids)
        s->depth++;
top:
    if(s->b.p >= s->b.ep){
        if(s->allunits && s->nextunit < d->info.len){
            if(dwarfenumunit(d, s->nextunit, s) < 0) {
                return -1;
            }
            s->allunits = 1;
            goto top;
        }
        return 0;
    }
 
    s->uoff = s->b.p - (d->info.data+s->unit);
    num = dwarfget128(&s->b);
    if(num == 0){
        if(s->depth == 0) {
            return 0;
        }
        if(s->depth > 0)
            s->depth--;
        goto top;
    }
 
    a = dwarfgetabbrev(d, s->aoff, num);
    if(a == nil){
        werrstr("getabbrev %ud %ud for %ud,%ud: %r\n", s->aoff, num, s->unit, s->uoff);
        return -1;
    }
    if(parseattrs(&s->b, s->unit, a, &s->attrs) < 0) {
        return -1;
    }
    return 1;
}

Referenced by dwarfenumunit(), dwarflookupchildtag(), dwarflookuptag(), dwarfnextsym(), and dwarfnextsymat().

dwarfnextsymat()

int dwarfnextsymat	(	Dwarf *	d,
		DwarfSym *	s,
		int	depth
	)

Definition at line 293 of file dwarfinfo.c.

{
    int r;
    DwarfSym t;
    uint sib;
 
    if(s->depth == depth && s->attrs.have.sibling){
        sib = s->attrs.sibling;
        if(sib < d->info.len && d->info.data+sib >= s->b.p)
            s->b.p = d->info.data+sib;
        s->attrs.haskids = 0;
    }
 
    /*
     * The funny game with t and s make sure that
     * if we get to the end of a run of a particular
     * depth, we leave s so that a call to nextsymat with depth-1
     * will actually produce the desired guy.  We could change
     * the interface to dwarfnextsym instead, but I'm scared
     * to touch it.
     */
    t = *s;
    for(;;){
        if((r = dwarfnextsym(d, &t)) != 1) {
            return r;
        }
        if(t.depth < depth){
            /* went too far - nothing to see */
            return 0;
        }
        *s = t;
        if(t.depth == depth) {
            return 1;
        }
    }
}

Referenced by dwarfgetparams(), dwarflookupchildtag(), dwarflookupfn(), dwarflookupnameinunit(), dwarflookupsubname(), dwarflookuptag(), dwarfnextsym(), dwarfpctoline(), dwarfseeksym(), and RosSymAggregate().

dwarfseeksym()

int dwarfseeksym	(	Dwarf *	d,
		ulong	unit,
		ulong	off,
		DwarfSym *	s
	)

Definition at line 171 of file dwarfinfo.c.

{
    if(dwarfenumunit(d, unit, s) < 0)
        return -1;
    s->b.p = d->info.data + unit + off;
    if(dwarfnextsymat(d, s, 0) != 1)
        return -1;
    return 0;
}

getblock()

static int getblock ( DwarfBuf *  b, int  form, DwarfBlock *  bl  )

static

Definition at line 568 of file dwarfinfo.c.

{
    ulong n;
 
    switch(form){
    default:
        return -1;
    case FormDwarfBlock:
        n = dwarfget128(b);
        goto copyn;
    case FormDwarfBlock1:
        n = dwarfget1(b);
        goto copyn;
    case FormDwarfBlock2:
        n = dwarfget2(b);
        goto copyn;
    case FormDwarfBlock4:
        n = dwarfget4(b);
    copyn:
        bl->data = dwarfgetnref(b, n);
        bl->len = n;
        if(bl->data == nil)
            return -1;
        return 0;
    }
}

Referenced by parseattrs(), and skipform().

getstring()

static int getstring ( DwarfBuf *  b, int  form, char **  s  )

static

Definition at line 540 of file dwarfinfo.c.

{
    static int nbad;
    ulong u;
 
    switch(form){
    default:
        return -1;
 
    case FormString:
        *s = dwarfgetstring(b);
        return 0;
 
    case FormStrp:
        u = dwarfget4(b);
        if(u >= b->d->str.len){
            if(++nbad == 1)
                werrstr("dwarf: bad string pointer 0x%lux in attribute", u);
            /* don't return error - maybe can proceed */
            *s = nil;
        }else
            *s = (char*)b->d->str.data + u;
        return 0;
 
    }
}

Referenced by parseattrs(), and skipform().

getuchar()

static int getuchar ( DwarfBuf *  b, int  form, uchar *  u  )

static

Definition at line 527 of file dwarfinfo.c.

{
    switch(form){
    default:
        return -1;
 
    case FormFlag:
        *u = dwarfget1(b);
        return 0;
    }
}

Referenced by parseattrs(), and skipform().

getulong()

static int getulong ( DwarfBuf *  b, int  form, ulong  unit, ulong *  u, int *  type  )

static

Definition at line 459 of file dwarfinfo.c.

{
    static int nbad;
    uvlong uv;
 
    switch(form){
    default:
        return -1;
 
    /* addresses */
    case FormAddr:
        *type = TAddress;
        *u = dwarfgetaddr(b);
        return 0;
 
    /* references */
    case FormRefAddr:
        /* absolute ref in .debug_info */
        *type = TReference;
        *u = dwarfgetaddr(b);
        return 0;
    case FormRef1:
        *u = dwarfget1(b);
        goto relativeref;
    case FormRef2:
        *u = dwarfget2(b);
        goto relativeref;
    case FormRef4:
        *u = dwarfget4(b);
        goto relativeref;
    case FormRef8:
        *u = dwarfget8(b);
        goto relativeref;
    case FormRefUdata:
        *u = dwarfget128(b);
    relativeref:
        *u += unit;
        *type = TReference;
        return 0;
 
    /* constants */
    case FormData1:
        *u = dwarfget1(b);
        goto constant;
    case FormData2:
        *u = dwarfget2(b);
        goto constant;
    case FormData4:
        *u = dwarfget4(b);
        goto constant;
    case FormData8:
        uv = dwarfget8(b);
        *u = uv;
        if(uv != *u && ++nbad == 1)
            werrstr("dwarf: truncating 64-bit attribute constants");
        goto constant;
    case FormSdata:
        *u = dwarfget128s(b);
        goto constant;
    case FormUdata:
        *u = dwarfget128(b);
    constant:
        *type = TConstant;
        return 0;
    }
}

Referenced by parseattrs(), and skipform().

parseattrs()

static int parseattrs ( DwarfBuf *  b, ulong  unit, DwarfAbbrev *  a, DwarfAttrs *  attrs  )

static

Definition at line 408 of file dwarfinfo.c.

{
    int i, f, n, got;
    static int nbad;
    void *v;
 
    /* initialize ptab first time through for quick access */
    if(ptab[DwarfAttrName].name != DwarfAttrName)
        for(i=0; plist[i].name; i++)
            ptab[plist[i].name] = plist[i];
 
    memset(attrs, 0, sizeof *attrs);
    attrs->tag = a->tag;
    attrs->haskids = a->haskids;
 
    for(i=0; i<a->nattr; i++){
        n = a->attr[i].name;
        f = a->attr[i].form;
        if(n < 0 || n >= DwarfAttrMax || ptab[n].name==0){
            if(++nbad == 1)
                werrstr("dwarf parse attrs: unexpected attribute name 0x%x", n);
            continue; //return -1;
        }
        v = (char*)attrs + ptab[n].off;
        got = 0;
        if(f == FormIndirect)
            f = dwarfget128(b);
        if((ptab[n].type&(TConstant|TReference|TAddress))
        && getulong(b, f, unit, v, &got) >= 0)
            ;
        else if((ptab[n].type&TFlag) && getuchar(b, f, v) >= 0)
            got = TFlag;
        else if((ptab[n].type&TString) && getstring(b, f, v) >= 0)
            got = TString;
        else if((ptab[n].type&TBlock) && getblock(b, f, v) >= 0)
            got = TBlock;
        else{
            if(skipform(b, f) < 0){
                if(++nbad == 1)
                    werrstr("dwarf parse attrs: cannot skip form %d", f);
                return -1;
            }
        }
        if(got == TBlock && (ptab[n].type&TConstant))
            got = constblock(b->d, v, v);
        *((uchar*)attrs+ptab[n].haveoff) = got;
    }
    return 0;
}

Referenced by dwarfnextsym().

skipform()

static int skipform ( DwarfBuf *  b, int  form  )

static

Definition at line 649 of file dwarfinfo.c.

{
    int type;
    DwarfVal val;
 
    if(getulong(b, form, 0, &val.c, &type) < 0
    && getuchar(b, form, (uchar*)&val) < 0
    && getstring(b, form, &val.s) < 0
    && getblock(b, form, &val.b) < 0)
        return -1;
    return 0;
}

Referenced by parseattrs().

Variable Documentation

plist

Parse plist[]

static

Definition at line 340 of file dwarfinfo.c.

Referenced by dwarfdumpsym(), FTC_MruNode_Prepend(), FTC_MruNode_Remove(), FTC_MruNode_Up(), IDirectPlay4Impl_AddPlayerToGroup(), IDirectPlay4Impl_DeletePlayerFromGroup(), IDirectPlay4Impl_EnumGroupPlayers(), IDirectPlay4Impl_GetPlayerData(), IDirectPlay4Impl_SetPlayerData(), parseattrs(), strlist_add(), strlist_destroy(), strlist_find_i(), strlist_get_at(), and strlist_init().

ptab

Parse ptab[DwarfAttrMax]

static

Definition at line 405 of file dwarfinfo.c.

Referenced by parseattrs().