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Sweden-Number/debugger/msc.c

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/*
* File msc.c - read VC++ debug information from COFF and eventually
* from PDB files.
*
* Copyright (C) 1996, Eric Youngdale.
* Copyright (C) 1999, 2000, Ulrich Weigand.
*
* Note - this handles reading debug information for 32 bit applications
* that run under Windows-NT for example. I doubt that this would work well
* for 16 bit applications, but I don't think it really matters since the
* file format is different, and we should never get in here in such cases.
*
* TODO:
* Get 16 bit CV stuff working.
* Add symbol size to internal symbol table.
*/
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#ifndef PATH_MAX
#define PATH_MAX _MAX_PATH
#endif
#include "debugger.h"
#include "file.h"
typedef struct
{
DWORD from;
DWORD to;
} OMAP_DATA;
typedef struct tagMSC_DBG_INFO
{
int nsect;
PIMAGE_SECTION_HEADER sectp;
int nomap;
OMAP_DATA * omapp;
} MSC_DBG_INFO;
/*========================================================================
* Debug file access helper routines
*/
/***********************************************************************
* DEBUG_LocateDebugInfoFile
*
* NOTE: dbg_filename must be at least MAX_PATHNAME_LEN bytes in size
*/
static void DEBUG_LocateDebugInfoFile(const char *filename, char *dbg_filename)
{
char *str1 = DBG_alloc(MAX_PATHNAME_LEN);
char *str2 = DBG_alloc(MAX_PATHNAME_LEN*10);
const char *file;
char *name_part;
file = strrchr(filename, '\\');
if( file == NULL ) file = filename; else file++;
if ((GetEnvironmentVariable("_NT_SYMBOL_PATH", str1, MAX_PATHNAME_LEN) &&
(SearchPath(str1, file, NULL, MAX_PATHNAME_LEN*10, str2, &name_part))) ||
(GetEnvironmentVariable("_NT_ALT_SYMBOL_PATH", str1, MAX_PATHNAME_LEN) &&
(SearchPath(str1, file, NULL, MAX_PATHNAME_LEN*10, str2, &name_part))) ||
(SearchPath(NULL, file, NULL, MAX_PATHNAME_LEN*10, str2, &name_part)))
lstrcpyn(dbg_filename, str2, MAX_PATHNAME_LEN);
else
lstrcpyn(dbg_filename, filename, MAX_PATHNAME_LEN);
DBG_free(str1);
DBG_free(str2);
}
/***********************************************************************
* DEBUG_MapDebugInfoFile
*/
static void* DEBUG_MapDebugInfoFile(const char* name, DWORD offset, DWORD size,
HANDLE* hFile, HANDLE* hMap)
{
DWORD g_offset; /* offset aligned on map granuality */
DWORD g_size; /* size to map, with offset aligned */
char* ret;
*hMap = 0;
if (name != NULL) {
char filename[MAX_PATHNAME_LEN];
DEBUG_LocateDebugInfoFile(name, filename);
if ((*hFile = CreateFile(filename, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL)) == INVALID_HANDLE_VALUE)
return NULL;
}
if (!size) {
DWORD file_size = GetFileSize(*hFile, NULL);
if (file_size == (DWORD)-1) return NULL;
size = file_size - offset;
}
g_offset = offset & ~0xFFFF; /* FIXME: is granularity portable ? */
g_size = offset + size - g_offset;
if ((*hMap = CreateFileMapping(*hFile, NULL, PAGE_READONLY, 0, 0, NULL)) == 0)
return NULL;
if ((ret = MapViewOfFile(*hMap, FILE_MAP_READ, 0, g_offset, g_size)) != NULL)
ret += offset - g_offset;
return ret;
}
/***********************************************************************
* DEBUG_UnmapDebugInfoFile
*/
static void DEBUG_UnmapDebugInfoFile(HANDLE hFile, HANDLE hMap, void* addr)
{
if (addr) UnmapViewOfFile(addr);
if (hMap) CloseHandle(hMap);
if (hFile) CloseHandle(hFile);
}
/*========================================================================
* Process COFF debug information.
*/
struct CoffFile
{
unsigned int startaddr;
unsigned int endaddr;
const char *filename;
int linetab_offset;
int linecnt;
struct name_hash **entries;
int neps;
int neps_alloc;
};
struct CoffFileSet
{
struct CoffFile *files;
int nfiles;
int nfiles_alloc;
};
static const char* DEBUG_GetCoffName( PIMAGE_SYMBOL coff_sym, const char* coff_strtab )
{
static char namebuff[9];
const char* nampnt;
if( coff_sym->N.Name.Short )
{
memcpy(namebuff, coff_sym->N.ShortName, 8);
namebuff[8] = '\0';
nampnt = &namebuff[0];
}
else
{
nampnt = coff_strtab + coff_sym->N.Name.Long;
}
if( nampnt[0] == '_' )
nampnt++;
return nampnt;
}
static int DEBUG_AddCoffFile( struct CoffFileSet* coff_files, const char* filename )
{
struct CoffFile* file;
if( coff_files->nfiles + 1 >= coff_files->nfiles_alloc )
{
coff_files->nfiles_alloc += 10;
coff_files->files = (struct CoffFile *) DBG_realloc(coff_files->files,
coff_files->nfiles_alloc * sizeof(struct CoffFile));
}
file = coff_files->files + coff_files->nfiles;
file->startaddr = 0xffffffff;
file->endaddr = 0;
file->filename = filename;
file->linetab_offset = -1;
file->linecnt = 0;
file->entries = NULL;
file->neps = file->neps_alloc = 0;
return coff_files->nfiles++;
}
static void DEBUG_AddCoffSymbol( struct CoffFile* coff_file, struct name_hash* sym )
{
if( coff_file->neps + 1 >= coff_file->neps_alloc )
{
coff_file->neps_alloc += 10;
coff_file->entries = (struct name_hash **)
DBG_realloc(coff_file->entries,
coff_file->neps_alloc * sizeof(struct name_hash *));
}
coff_file->entries[coff_file->neps++] = sym;
}
static enum DbgInfoLoad DEBUG_ProcessCoff( DBG_MODULE *module, LPBYTE root )
{
PIMAGE_AUX_SYMBOL aux;
PIMAGE_COFF_SYMBOLS_HEADER coff;
PIMAGE_LINENUMBER coff_linetab;
PIMAGE_LINENUMBER linepnt;
char * coff_strtab;
PIMAGE_SYMBOL coff_sym;
PIMAGE_SYMBOL coff_symbols;
struct CoffFileSet coff_files;
int curr_file_idx = -1;
unsigned int i;
int j;
int k;
int l;
int linetab_indx;
const char * nampnt;
int naux;
DBG_VALUE new_value;
enum DbgInfoLoad dil = DIL_ERROR;
DEBUG_Printf(DBG_CHN_TRACE, "Processing COFF symbols...\n");
assert(sizeof(IMAGE_SYMBOL) == IMAGE_SIZEOF_SYMBOL);
assert(sizeof(IMAGE_LINENUMBER) == IMAGE_SIZEOF_LINENUMBER);
coff_files.files = NULL;
coff_files.nfiles = coff_files.nfiles_alloc = 0;
coff = (PIMAGE_COFF_SYMBOLS_HEADER) root;
coff_symbols = (PIMAGE_SYMBOL) ((unsigned int) coff + coff->LvaToFirstSymbol);
coff_linetab = (PIMAGE_LINENUMBER) ((unsigned int) coff + coff->LvaToFirstLinenumber);
coff_strtab = (char *) (coff_symbols + coff->NumberOfSymbols);
linetab_indx = 0;
new_value.cookie = DV_TARGET;
new_value.type = NULL;
for(i=0; i < coff->NumberOfSymbols; i++ )
{
coff_sym = coff_symbols + i;
naux = coff_sym->NumberOfAuxSymbols;
if( coff_sym->StorageClass == IMAGE_SYM_CLASS_FILE )
{
curr_file_idx = DEBUG_AddCoffFile( &coff_files, (char *) (coff_sym + 1) );
DEBUG_Printf(DBG_CHN_TRACE,"New file %s\n", coff_files.files[curr_file_idx].filename);
i += naux;
continue;
}
if (curr_file_idx < 0) {
assert(coff_files.nfiles == 0 && coff_files.nfiles_alloc == 0);
curr_file_idx = DEBUG_AddCoffFile( &coff_files, "<none>" );
DEBUG_Printf(DBG_CHN_TRACE,"New file %s\n", coff_files.files[curr_file_idx].filename);
}
/*
* This guy marks the size and location of the text section
* for the current file. We need to keep track of this so
* we can figure out what file the different global functions
* go with.
*/
if( (coff_sym->StorageClass == IMAGE_SYM_CLASS_STATIC)
&& (naux != 0)
&& (coff_sym->Type == 0)
&& (coff_sym->SectionNumber == 1) )
{
aux = (PIMAGE_AUX_SYMBOL) (coff_sym + 1);
if( coff_files.files[curr_file_idx].linetab_offset != -1 )
{
/*
* Save this so we can still get the old name.
*/
const char* fn = coff_files.files[curr_file_idx].filename;
#ifdef MORE_DBG
DEBUG_Printf(DBG_CHN_TRACE, "Duplicating sect from %s: %lx %x %x %d %d\n",
coff_files.files[curr_file_idx].filename,
aux->Section.Length,
aux->Section.NumberOfRelocations,
aux->Section.NumberOfLinenumbers,
aux->Section.Number,
aux->Section.Selection);
DEBUG_Printf(DBG_CHN_TRACE, "More sect %d %s %08lx %d %d %d\n",
coff_sym->SectionNumber,
DEBUG_GetCoffName( coff_sym, coff_strtab ),
coff_sym->Value,
coff_sym->Type,
coff_sym->StorageClass,
coff_sym->NumberOfAuxSymbols);
#endif
/*
* Duplicate the file entry. We have no way to describe
* multiple text sections in our current way of handling things.
*/
DEBUG_AddCoffFile( &coff_files, fn );
}
#ifdef MORE_DBG
else
{
DEBUG_Printf(DBG_CHN_TRACE, "New text sect from %s: %lx %x %x %d %d\n",
coff_files.files[curr_file_idx].filename,
aux->Section.Length,
aux->Section.NumberOfRelocations,
aux->Section.NumberOfLinenumbers,
aux->Section.Number,
aux->Section.Selection);
}
#endif
if( coff_files.files[curr_file_idx].startaddr > coff_sym->Value )
{
coff_files.files[curr_file_idx].startaddr = coff_sym->Value;
}
if( coff_files.files[curr_file_idx].endaddr < coff_sym->Value + aux->Section.Length )
{
coff_files.files[curr_file_idx].endaddr = coff_sym->Value + aux->Section.Length;
}
coff_files.files[curr_file_idx].linetab_offset = linetab_indx;
coff_files.files[curr_file_idx].linecnt = aux->Section.NumberOfLinenumbers;
linetab_indx += aux->Section.NumberOfLinenumbers;
i += naux;
continue;
}
if( (coff_sym->StorageClass == IMAGE_SYM_CLASS_STATIC)
&& (naux == 0)
&& (coff_sym->SectionNumber == 1) )
{
DWORD base = module->msc_info->sectp[coff_sym->SectionNumber - 1].VirtualAddress;
/*
* This is a normal static function when naux == 0.
* Just register it. The current file is the correct
* one in this instance.
*/
nampnt = DEBUG_GetCoffName( coff_sym, coff_strtab );
new_value.addr.seg = 0;
new_value.addr.off = (int) ((char *)module->load_addr + base + coff_sym->Value);
#ifdef MORE_DBG
DEBUG_Printf(DBG_CHN_TRACE,"\tAdding static symbol %s\n", nampnt);
#endif
/* FIXME: was adding symbol to this_file ??? */
DEBUG_AddCoffSymbol( &coff_files.files[curr_file_idx],
DEBUG_AddSymbol( nampnt, &new_value,
coff_files.files[curr_file_idx].filename,
SYM_WIN32 | SYM_FUNC ) );
i += naux;
continue;
}
if( (coff_sym->StorageClass == IMAGE_SYM_CLASS_EXTERNAL)
&& ISFCN(coff_sym->Type)
&& (coff_sym->SectionNumber > 0) )
{
const char* this_file = NULL;
DWORD base = module->msc_info->sectp[coff_sym->SectionNumber - 1].VirtualAddress;
nampnt = DEBUG_GetCoffName( coff_sym, coff_strtab );
new_value.addr.seg = 0;
new_value.addr.off = (int) ((char *)module->load_addr + base + coff_sym->Value);
#ifdef MORE_DBG
DEBUG_Printf(DBG_CHN_TRACE, "%d: %lx %s\n", i, new_value.addr.off, nampnt);
DEBUG_Printf(DBG_CHN_TRACE,"\tAdding global symbol %s (sect=%s)\n",
nampnt, MSC_INFO(module)->sectp[coff_sym->SectionNumber - 1].Name);
#endif
/*
* Now we need to figure out which file this guy belongs to.
*/
for(j=0; j < coff_files.nfiles; j++)
{
if( coff_files.files[j].startaddr <= base + coff_sym->Value
&& coff_files.files[j].endaddr > base + coff_sym->Value )
{
this_file = coff_files.files[j].filename;
break;
}
}
if (j < coff_files.nfiles) {
DEBUG_AddCoffSymbol( &coff_files.files[j],
DEBUG_AddSymbol( nampnt, &new_value, this_file, SYM_WIN32 | SYM_FUNC ) );
} else {
DEBUG_AddSymbol( nampnt, &new_value, NULL, SYM_WIN32 | SYM_FUNC );
}
i += naux;
continue;
}
if( (coff_sym->StorageClass == IMAGE_SYM_CLASS_EXTERNAL)
&& (coff_sym->SectionNumber > 0) )
{
DWORD base = module->msc_info->sectp[coff_sym->SectionNumber - 1].VirtualAddress;
/*
* Similar to above, but for the case of data symbols.
* These aren't treated as entrypoints.
*/
nampnt = DEBUG_GetCoffName( coff_sym, coff_strtab );
new_value.addr.seg = 0;
new_value.addr.off = (int) ((char *)module->load_addr + base + coff_sym->Value);
#ifdef MORE_DBG
DEBUG_Printf(DBG_CHN_TRACE, "%d: %lx %s\n", i, new_value.addr.off, nampnt);
DEBUG_Printf(DBG_CHN_TRACE,"\tAdding global data symbol %s\n", nampnt);
#endif
/*
* Now we need to figure out which file this guy belongs to.
*/
DEBUG_AddSymbol( nampnt, &new_value, NULL, SYM_WIN32 | SYM_DATA );
i += naux;
continue;
}
if( (coff_sym->StorageClass == IMAGE_SYM_CLASS_STATIC)
&& (naux == 0) )
{
/*
* Ignore these. They don't have anything to do with
* reality.
*/
i += naux;
continue;
}
#ifdef MORE_DBG
DEBUG_Printf(DBG_CHN_TRACE,"Skipping unknown entry '%s' %d %d %d\n",
DEBUG_GetCoffName( coff_sym, coff_strtab ),
coff_sym->StorageClass, coff_sym->SectionNumber, naux);
#endif
/*
* For now, skip past the aux entries.
*/
i += naux;
}
/*
* OK, we now should have a list of files, and we should have a list
* of entrypoints. We need to sort the entrypoints so that we are
* able to tie the line numbers with the given functions within the
* file.
*/
if( coff_files.files != NULL )
{
for(j=0; j < coff_files.nfiles; j++)
{
if( coff_files.files[j].entries != NULL )
{
qsort(coff_files.files[j].entries, coff_files.files[j].neps,
sizeof(struct name_hash *), DEBUG_cmp_sym);
}
}
/*
* Now pick apart the line number tables, and attach the entries
* to the given functions.
*/
for(j=0; j < coff_files.nfiles; j++)
{
l = 0;
if( coff_files.files[j].neps != 0 )
for(k=0; k < coff_files.files[j].linecnt; k++)
{
linepnt = coff_linetab + coff_files.files[j].linetab_offset + k;
/*
* If we have spilled onto the next entrypoint, then
* bump the counter..
*/
while(TRUE)
{
if (l+1 >= coff_files.files[j].neps) break;
DEBUG_GetSymbolAddr(coff_files.files[j].entries[l+1], &new_value.addr);
if( (((unsigned int)module->load_addr +
linepnt->Type.VirtualAddress) >= new_value.addr.off) )
{
l++;
} else break;
}
/*
* Add the line number. This is always relative to the
* start of the function, so we need to subtract that offset
* first.
*/
DEBUG_GetSymbolAddr(coff_files.files[j].entries[l], &new_value.addr);
DEBUG_AddLineNumber(coff_files.files[j].entries[l],
linepnt->Linenumber,
(unsigned int) module->load_addr
+ linepnt->Type.VirtualAddress
- new_value.addr.off);
}
}
}
dil = DIL_LOADED;
if( coff_files.files != NULL )
{
for(j=0; j < coff_files.nfiles; j++)
{
if( coff_files.files[j].entries != NULL )
{
DBG_free(coff_files.files[j].entries);
}
}
DBG_free(coff_files.files);
}
return dil;
}
/*========================================================================
* Process CodeView type information.
*/
union codeview_type
{
struct
{
short int len;
short int id;
} generic;
struct
{
short int len;
short int id;
short int attribute;
short int datatype;
unsigned char variant[1];
} pointer;
struct
{
short int len;
short int id;
unsigned int datatype;
unsigned int attribute;
unsigned char variant[1];
} pointer32;
struct
{
short int len;
short int id;
unsigned char nbits;
unsigned char bitoff;
unsigned short type;
} bitfield;
struct
{
short int len;
short int id;
unsigned int type;
unsigned char nbits;
unsigned char bitoff;
} bitfield32;
struct
{
short int len;
short int id;
short int elemtype;
short int idxtype;
unsigned short int arrlen; /* numeric leaf */
#if 0
unsigned char name[1];
#endif
} array;
struct
{
short int len;
short int id;
unsigned int elemtype;
unsigned int idxtype;
unsigned short int arrlen; /* numeric leaf */
#if 0
unsigned char name[1];
#endif
} array32;
struct
{
short int len;
short int id;
short int n_element;
short int fieldlist;
short int property;
short int derived;
short int vshape;
unsigned short int structlen; /* numeric leaf */
#if 0
unsigned char name[1];
#endif
} structure;
struct
{
short int len;
short int id;
short int n_element;
short int property;
unsigned int fieldlist;
unsigned int derived;
unsigned int vshape;
unsigned short int structlen; /* numeric leaf */
#if 0
unsigned char name[1];
#endif
} structure32;
struct
{
short int len;
short int id;
short int count;
short int fieldlist;
short int property;
unsigned short int un_len; /* numeric leaf */
#if 0
unsigned char name[1];
#endif
} t_union;
struct
{
short int len;
short int id;
short int count;
short int property;
unsigned int fieldlist;
unsigned short int un_len; /* numeric leaf */
#if 0
unsigned char name[1];
#endif
} t_union32;
struct
{
short int len;
short int id;
short int count;
short int type;
short int field;
short int property;
unsigned char name[1];
} enumeration;
struct
{
short int len;
short int id;
short int count;
short int property;
unsigned int type;
unsigned int field;
unsigned char name[1];
} enumeration32;
struct
{
short int len;
short int id;
unsigned char list[1];
} fieldlist;
};
union codeview_fieldtype
{
struct
{
short int id;
} generic;
struct
{
short int id;
short int type;
short int attribute;
unsigned short int offset; /* numeric leaf */
} bclass;
struct
{
short int id;
short int attribute;
unsigned int type;
unsigned short int offset; /* numeric leaf */
} bclass32;
struct
{
short int id;
short int btype;
short int vbtype;
short int attribute;
unsigned short int vbpoff; /* numeric leaf */
#if 0
unsigned short int vboff; /* numeric leaf */
#endif
} vbclass;
struct
{
short int id;
short int attribute;
unsigned int btype;
unsigned int vbtype;
unsigned short int vbpoff; /* numeric leaf */
#if 0
unsigned short int vboff; /* numeric leaf */
#endif
} vbclass32;
struct
{
short int id;
short int attribute;
unsigned short int value; /* numeric leaf */
#if 0
unsigned char name[1];
#endif
} enumerate;
struct
{
short int id;
short int type;
unsigned char name[1];
} friendfcn;
struct
{
short int id;
short int _pad0;
unsigned int type;
unsigned char name[1];
} friendfcn32;
struct
{
short int id;
short int type;
short int attribute;
unsigned short int offset; /* numeric leaf */
#if 0
unsigned char name[1];
#endif
} member;
struct
{
short int id;
short int attribute;
unsigned int type;
unsigned short int offset; /* numeric leaf */
#if 0
unsigned char name[1];
#endif
} member32;
struct
{
short int id;
short int type;
short int attribute;
unsigned char name[1];
} stmember;
struct
{
short int id;
short int attribute;
unsigned int type;
unsigned char name[1];
} stmember32;
struct
{
short int id;
short int count;
short int mlist;
unsigned char name[1];
} method;
struct
{
short int id;
short int count;
unsigned int mlist;
unsigned char name[1];
} method32;
struct
{
short int id;
short int index;
unsigned char name[1];
} nesttype;
struct
{
short int id;
short int _pad0;
unsigned int index;
unsigned char name[1];
} nesttype32;
struct
{
short int id;
short int type;
} vfunctab;
struct
{
short int id;
short int _pad0;
unsigned int type;
} vfunctab32;
struct
{
short int id;
short int type;
} friendcls;
struct
{
short int id;
short int _pad0;
unsigned int type;
} friendcls32;
struct
{
short int id;
short int attribute;
short int type;
unsigned char name[1];
} onemethod;
struct
{
short int id;
short int attribute;
short int type;
unsigned int vtab_offset;
unsigned char name[1];
} onemethod_virt;
struct
{
short int id;
short int attribute;
unsigned int type;
unsigned char name[1];
} onemethod32;
struct
{
short int id;
short int attribute;
unsigned int type;
unsigned int vtab_offset;
unsigned char name[1];
} onemethod32_virt;
struct
{
short int id;
short int type;
unsigned int offset;
} vfuncoff;
struct
{
short int id;
short int _pad0;
unsigned int type;
unsigned int offset;
} vfuncoff32;
struct
{
short int id;
short int attribute;
short int index;
unsigned char name[1];
} nesttypeex;
struct
{
short int id;
short int attribute;
unsigned int index;
unsigned char name[1];
} nesttypeex32;
struct
{
short int id;
short int attribute;
unsigned int type;
unsigned char name[1];
} membermodify;
};
/*
* This covers the basic datatypes that VC++ seems to be using these days.
* 32 bit mode only. There are additional numbers for the pointers in 16
* bit mode. There are many other types listed in the documents, but these
* are apparently not used by the compiler, or represent pointer types
* that are not used.
*/
#define T_NOTYPE 0x0000 /* Notype */
#define T_ABS 0x0001 /* Abs */
#define T_VOID 0x0003 /* Void */
#define T_CHAR 0x0010 /* signed char */
#define T_SHORT 0x0011 /* short */
#define T_LONG 0x0012 /* long */
#define T_QUAD 0x0013 /* long long */
#define T_UCHAR 0x0020 /* unsigned char */
#define T_USHORT 0x0021 /* unsigned short */
#define T_ULONG 0x0022 /* unsigned long */
#define T_UQUAD 0x0023 /* unsigned long long */
#define T_REAL32 0x0040 /* float */
#define T_REAL64 0x0041 /* double */
#define T_RCHAR 0x0070 /* real char */
#define T_WCHAR 0x0071 /* wide char */
#define T_INT4 0x0074 /* int */
#define T_UINT4 0x0075 /* unsigned int */
#define T_32PVOID 0x0403 /* 32 bit near pointer to void */
#define T_32PCHAR 0x0410 /* 16:32 near pointer to signed char */
#define T_32PSHORT 0x0411 /* 16:32 near pointer to short */
#define T_32PLONG 0x0412 /* 16:32 near pointer to int */
#define T_32PQUAD 0x0413 /* 16:32 near pointer to long long */
#define T_32PUCHAR 0x0420 /* 16:32 near pointer to unsigned char */
#define T_32PUSHORT 0x0421 /* 16:32 near pointer to unsigned short */
#define T_32PULONG 0x0422 /* 16:32 near pointer to unsigned int */
#define T_32PUQUAD 0x0423 /* 16:32 near pointer to long long */
#define T_32PREAL32 0x0440 /* 16:32 near pointer to float */
#define T_32PREAL64 0x0441 /* 16:32 near pointer to float */
#define T_32PRCHAR 0x0470 /* 16:32 near pointer to real char */
#define T_32PWCHAR 0x0471 /* 16:32 near pointer to real char */
#define T_32PINT4 0x0474 /* 16:32 near pointer to int */
#define T_32PUINT4 0x0475 /* 16:32 near pointer to unsigned int */
#define LF_MODIFIER 0x0001
#define LF_POINTER 0x0002
#define LF_ARRAY 0x0003
#define LF_CLASS 0x0004
#define LF_STRUCTURE 0x0005
#define LF_UNION 0x0006
#define LF_ENUM 0x0007
#define LF_PROCEDURE 0x0008
#define LF_MFUNCTION 0x0009
#define LF_VTSHAPE 0x000a
#define LF_COBOL0 0x000b
#define LF_COBOL1 0x000c
#define LF_BARRAY 0x000d
#define LF_LABEL 0x000e
#define LF_NULL 0x000f
#define LF_NOTTRAN 0x0010
#define LF_DIMARRAY 0x0011
#define LF_VFTPATH 0x0012
#define LF_PRECOMP 0x0013
#define LF_ENDPRECOMP 0x0014
#define LF_OEM 0x0015
#define LF_TYPESERVER 0x0016
#define LF_MODIFIER_32 0x1001 /* variants with new 32-bit type indices */
#define LF_POINTER_32 0x1002
#define LF_ARRAY_32 0x1003
#define LF_CLASS_32 0x1004
#define LF_STRUCTURE_32 0x1005
#define LF_UNION_32 0x1006
#define LF_ENUM_32 0x1007
#define LF_PROCEDURE_32 0x1008
#define LF_MFUNCTION_32 0x1009
#define LF_COBOL0_32 0x100a
#define LF_BARRAY_32 0x100b
#define LF_DIMARRAY_32 0x100c
#define LF_VFTPATH_32 0x100d
#define LF_PRECOMP_32 0x100e
#define LF_OEM_32 0x100f
#define LF_SKIP 0x0200
#define LF_ARGLIST 0x0201
#define LF_DEFARG 0x0202
#define LF_LIST 0x0203
#define LF_FIELDLIST 0x0204
#define LF_DERIVED 0x0205
#define LF_BITFIELD 0x0206
#define LF_METHODLIST 0x0207
#define LF_DIMCONU 0x0208
#define LF_DIMCONLU 0x0209
#define LF_DIMVARU 0x020a
#define LF_DIMVARLU 0x020b
#define LF_REFSYM 0x020c
#define LF_SKIP_32 0x1200 /* variants with new 32-bit type indices */
#define LF_ARGLIST_32 0x1201
#define LF_DEFARG_32 0x1202
#define LF_FIELDLIST_32 0x1203
#define LF_DERIVED_32 0x1204
#define LF_BITFIELD_32 0x1205
#define LF_METHODLIST_32 0x1206
#define LF_DIMCONU_32 0x1207
#define LF_DIMCONLU_32 0x1208
#define LF_DIMVARU_32 0x1209
#define LF_DIMVARLU_32 0x120a
#define LF_BCLASS 0x0400
#define LF_VBCLASS 0x0401
#define LF_IVBCLASS 0x0402
#define LF_ENUMERATE 0x0403
#define LF_FRIENDFCN 0x0404
#define LF_INDEX 0x0405
#define LF_MEMBER 0x0406
#define LF_STMEMBER 0x0407
#define LF_METHOD 0x0408
#define LF_NESTTYPE 0x0409
#define LF_VFUNCTAB 0x040a
#define LF_FRIENDCLS 0x040b
#define LF_ONEMETHOD 0x040c
#define LF_VFUNCOFF 0x040d
#define LF_NESTTYPEEX 0x040e
#define LF_MEMBERMODIFY 0x040f
#define LF_BCLASS_32 0x1400 /* variants with new 32-bit type indices */
#define LF_VBCLASS_32 0x1401
#define LF_IVBCLASS_32 0x1402
#define LF_FRIENDFCN_32 0x1403
#define LF_INDEX_32 0x1404
#define LF_MEMBER_32 0x1405
#define LF_STMEMBER_32 0x1406
#define LF_METHOD_32 0x1407
#define LF_NESTTYPE_32 0x1408
#define LF_VFUNCTAB_32 0x1409
#define LF_FRIENDCLS_32 0x140a
#define LF_ONEMETHOD_32 0x140b
#define LF_VFUNCOFF_32 0x140c
#define LF_NESTTYPEEX_32 0x140d
#define LF_NUMERIC 0x8000 /* numeric leaf types */
#define LF_CHAR 0x8000
#define LF_SHORT 0x8001
#define LF_USHORT 0x8002
#define LF_LONG 0x8003
#define LF_ULONG 0x8004
#define LF_REAL32 0x8005
#define LF_REAL64 0x8006
#define LF_REAL80 0x8007
#define LF_REAL128 0x8008
#define LF_QUADWORD 0x8009
#define LF_UQUADWORD 0x800a
#define LF_REAL48 0x800b
#define LF_COMPLEX32 0x800c
#define LF_COMPLEX64 0x800d
#define LF_COMPLEX80 0x800e
#define LF_COMPLEX128 0x800f
#define LF_VARSTRING 0x8010
#define MAX_BUILTIN_TYPES 0x480
static struct datatype * cv_basic_types[MAX_BUILTIN_TYPES];
static unsigned int num_cv_defined_types = 0;
static struct datatype **cv_defined_types = NULL;
void
DEBUG_InitCVDataTypes(void)
{
/*
* These are the common builtin types that are used by VC++.
*/
cv_basic_types[T_NOTYPE] = NULL;
cv_basic_types[T_ABS] = NULL;
cv_basic_types[T_VOID] = DEBUG_NewDataType(DT_BASIC, "void");
cv_basic_types[T_CHAR] = DEBUG_NewDataType(DT_BASIC, "char");
cv_basic_types[T_SHORT] = DEBUG_NewDataType(DT_BASIC, "short int");
cv_basic_types[T_LONG] = DEBUG_NewDataType(DT_BASIC, "long int");
cv_basic_types[T_QUAD] = DEBUG_NewDataType(DT_BASIC, "long long int");
cv_basic_types[T_UCHAR] = DEBUG_NewDataType(DT_BASIC, "unsigned char");
cv_basic_types[T_USHORT] = DEBUG_NewDataType(DT_BASIC, "short unsigned int");
cv_basic_types[T_ULONG] = DEBUG_NewDataType(DT_BASIC, "long unsigned int");
cv_basic_types[T_UQUAD] = DEBUG_NewDataType(DT_BASIC, "long long unsigned int");
cv_basic_types[T_REAL32] = DEBUG_NewDataType(DT_BASIC, "float");
cv_basic_types[T_REAL64] = DEBUG_NewDataType(DT_BASIC, "double");
cv_basic_types[T_RCHAR] = DEBUG_NewDataType(DT_BASIC, "char");
cv_basic_types[T_WCHAR] = DEBUG_NewDataType(DT_BASIC, "short");
cv_basic_types[T_INT4] = DEBUG_NewDataType(DT_BASIC, "int");
cv_basic_types[T_UINT4] = DEBUG_NewDataType(DT_BASIC, "unsigned int");
cv_basic_types[T_32PVOID] = DEBUG_FindOrMakePointerType(cv_basic_types[T_VOID]);
cv_basic_types[T_32PCHAR] = DEBUG_FindOrMakePointerType(cv_basic_types[T_CHAR]);
cv_basic_types[T_32PSHORT] = DEBUG_FindOrMakePointerType(cv_basic_types[T_SHORT]);
cv_basic_types[T_32PLONG] = DEBUG_FindOrMakePointerType(cv_basic_types[T_LONG]);
cv_basic_types[T_32PQUAD] = DEBUG_FindOrMakePointerType(cv_basic_types[T_QUAD]);
cv_basic_types[T_32PUCHAR] = DEBUG_FindOrMakePointerType(cv_basic_types[T_UCHAR]);
cv_basic_types[T_32PUSHORT] = DEBUG_FindOrMakePointerType(cv_basic_types[T_USHORT]);
cv_basic_types[T_32PULONG] = DEBUG_FindOrMakePointerType(cv_basic_types[T_ULONG]);
cv_basic_types[T_32PUQUAD] = DEBUG_FindOrMakePointerType(cv_basic_types[T_UQUAD]);
cv_basic_types[T_32PREAL32] = DEBUG_FindOrMakePointerType(cv_basic_types[T_REAL32]);
cv_basic_types[T_32PREAL64] = DEBUG_FindOrMakePointerType(cv_basic_types[T_REAL64]);
cv_basic_types[T_32PRCHAR] = DEBUG_FindOrMakePointerType(cv_basic_types[T_RCHAR]);
cv_basic_types[T_32PWCHAR] = DEBUG_FindOrMakePointerType(cv_basic_types[T_WCHAR]);
cv_basic_types[T_32PINT4] = DEBUG_FindOrMakePointerType(cv_basic_types[T_INT4]);
cv_basic_types[T_32PUINT4] = DEBUG_FindOrMakePointerType(cv_basic_types[T_UINT4]);
}
static int
numeric_leaf( int *value, unsigned short int *leaf )
{
unsigned short int type = *leaf++;
int length = 2;
if ( type < LF_NUMERIC )
{
*value = type;
}
else
{
switch ( type )
{
case LF_CHAR:
length += 1;
*value = *(char *)leaf;
break;
case LF_SHORT:
length += 2;
*value = *(short *)leaf;
break;
case LF_USHORT:
length += 2;
*value = *(unsigned short *)leaf;
break;
case LF_LONG:
length += 4;
*value = *(int *)leaf;
break;
case LF_ULONG:
length += 4;
*value = *(unsigned int *)leaf;
break;
case LF_QUADWORD:
case LF_UQUADWORD:
length += 8;
*value = 0; /* FIXME */
break;
case LF_REAL32:
length += 4;
*value = 0; /* FIXME */
break;
case LF_REAL48:
length += 6;
*value = 0; /* FIXME */
break;
case LF_REAL64:
length += 8;
*value = 0; /* FIXME */
break;
case LF_REAL80:
length += 10;
*value = 0; /* FIXME */
break;
case LF_REAL128:
length += 16;
*value = 0; /* FIXME */
break;
case LF_COMPLEX32:
length += 4;
*value = 0; /* FIXME */
break;
case LF_COMPLEX64:
length += 8;
*value = 0; /* FIXME */
break;
case LF_COMPLEX80:
length += 10;
*value = 0; /* FIXME */
break;
case LF_COMPLEX128:
length += 16;
*value = 0; /* FIXME */
break;
case LF_VARSTRING:
length += 2 + *leaf;
*value = 0; /* FIXME */
break;
default:
DEBUG_Printf( DBG_CHN_MESG, "Unknown numeric leaf type %04x\n", type );
*value = 0;
break;
}
}
return length;
}
static char *
terminate_string( unsigned char *name )
{
static char symname[256];
int namelen = name[0];
assert( namelen >= 0 && namelen < 256 );
memcpy( symname, name+1, namelen );
symname[namelen] = '\0';
if ( !*symname || strcmp( symname, "__unnamed" ) == 0 )
return NULL;
else
return symname;
}
static
struct datatype * DEBUG_GetCVType(unsigned int typeno)
{
struct datatype * dt = NULL;
/*
* Convert Codeview type numbers into something we can grok internally.
* Numbers < 0x1000 are all fixed builtin types. Numbers from 0x1000 and
* up are all user defined (structs, etc).
*/
if ( typeno < 0x1000 )
{
if ( typeno < MAX_BUILTIN_TYPES )
dt = cv_basic_types[typeno];
}
else
{
if ( typeno - 0x1000 < num_cv_defined_types )
dt = cv_defined_types[typeno - 0x1000];
}
return dt;
}
static int
DEBUG_AddCVType( unsigned int typeno, struct datatype *dt )
{
while ( typeno - 0x1000 >= num_cv_defined_types )
{
num_cv_defined_types += 0x100;
cv_defined_types = (struct datatype **)
DBG_realloc( cv_defined_types,
num_cv_defined_types * sizeof(struct datatype *) );
memset( cv_defined_types + num_cv_defined_types - 0x100,
0,
0x100 * sizeof(struct datatype *) );
if ( cv_defined_types == NULL )
return FALSE;
}
cv_defined_types[ typeno - 0x1000 ] = dt;
return TRUE;
}
static void
DEBUG_ClearTypeTable( void )
{
if ( cv_defined_types )
DBG_free( cv_defined_types );
cv_defined_types = NULL;
num_cv_defined_types = 0;
}
static int
DEBUG_AddCVType_Pointer( unsigned int typeno, unsigned int datatype )
{
struct datatype *dt =
DEBUG_FindOrMakePointerType( DEBUG_GetCVType( datatype ) );
return DEBUG_AddCVType( typeno, dt );
}
static int
DEBUG_AddCVType_Array( unsigned int typeno, char *name,
unsigned int elemtype, unsigned int arr_len )
{
struct datatype *dt = DEBUG_NewDataType( DT_ARRAY, name );
struct datatype *elem = DEBUG_GetCVType( elemtype );
unsigned int elem_size = elem? DEBUG_GetObjectSize( elem ) : 0;
unsigned int arr_max = elem_size? arr_len / elem_size : 0;
DEBUG_SetArrayParams( dt, 0, arr_max, elem );
return DEBUG_AddCVType( typeno, dt );
}
static int
DEBUG_AddCVType_Bitfield( unsigned int typeno,
unsigned int bitoff, unsigned int nbits,
unsigned int basetype )
{
struct datatype *dt = DEBUG_NewDataType( DT_BITFIELD, NULL );
struct datatype *base = DEBUG_GetCVType( basetype );
DEBUG_SetBitfieldParams( dt, bitoff, nbits, base );
return DEBUG_AddCVType( typeno, dt );
}
static int
DEBUG_AddCVType_EnumFieldList( unsigned int typeno, unsigned char *list, int len )
{
struct datatype *dt = DEBUG_NewDataType( DT_ENUM, NULL );
unsigned char *ptr = list;
while ( ptr - list < len )
{
union codeview_fieldtype *type = (union codeview_fieldtype *)ptr;
if ( *ptr >= 0xf0 ) /* LF_PAD... */
{
ptr += *ptr & 0x0f;
continue;
}
switch ( type->generic.id )
{
case LF_ENUMERATE:
{
int value, vlen = numeric_leaf( &value, &type->enumerate.value );
unsigned char *name = (unsigned char *)&type->enumerate.value + vlen;
DEBUG_AddStructElement( dt, terminate_string( name ),
NULL, value, 0 );
ptr += 2 + 2 + vlen + (1 + name[0]);
break;
}
default:
DEBUG_Printf( DBG_CHN_MESG, "Unhandled type %04x in ENUM field list\n",
type->generic.id );
return FALSE;
}
}
return DEBUG_AddCVType( typeno, dt );
}
static int
DEBUG_AddCVType_StructFieldList( unsigned int typeno, unsigned char *list, int len )
{
struct datatype *dt = DEBUG_NewDataType( DT_STRUCT, NULL );
unsigned char *ptr = list;
while ( ptr - list < len )
{
union codeview_fieldtype *type = (union codeview_fieldtype *)ptr;
if ( *ptr >= 0xf0 ) /* LF_PAD... */
{
ptr += *ptr & 0x0f;
continue;
}
switch ( type->generic.id )
{
case LF_BCLASS:
{
int offset, olen = numeric_leaf( &offset, &type->bclass.offset );
/* FIXME: ignored for now */
ptr += 2 + 2 + 2 + olen;
break;
}
case LF_BCLASS_32:
{
int offset, olen = numeric_leaf( &offset, &type->bclass32.offset );
/* FIXME: ignored for now */
ptr += 2 + 2 + 4 + olen;
break;
}
case LF_VBCLASS:
case LF_IVBCLASS:
{
int vbpoff, vbplen = numeric_leaf( &vbpoff, &type->vbclass.vbpoff );
unsigned short int *p_vboff = (unsigned short int *)((char *)&type->vbclass.vbpoff + vbpoff);
int vpoff, vplen = numeric_leaf( &vpoff, p_vboff );
/* FIXME: ignored for now */
ptr += 2 + 2 + 2 + 2 + vbplen + vplen;
break;
}
case LF_VBCLASS_32:
case LF_IVBCLASS_32:
{
int vbpoff, vbplen = numeric_leaf( &vbpoff, &type->vbclass32.vbpoff );
unsigned short int *p_vboff = (unsigned short int *)((char *)&type->vbclass32.vbpoff + vbpoff);
int vpoff, vplen = numeric_leaf( &vpoff, p_vboff );
/* FIXME: ignored for now */
ptr += 2 + 2 + 4 + 4 + vbplen + vplen;
break;
}
case LF_MEMBER:
{
int offset, olen = numeric_leaf( &offset, &type->member.offset );
unsigned char *name = (unsigned char *)&type->member.offset + olen;
struct datatype *subtype = DEBUG_GetCVType( type->member.type );
int elem_size = subtype? DEBUG_GetObjectSize( subtype ) : 0;
DEBUG_AddStructElement( dt, terminate_string( name ),
subtype, offset << 3, elem_size << 3 );
ptr += 2 + 2 + 2 + olen + (1 + name[0]);
break;
}
case LF_MEMBER_32:
{
int offset, olen = numeric_leaf( &offset, &type->member32.offset );
unsigned char *name = (unsigned char *)&type->member32.offset + olen;
struct datatype *subtype = DEBUG_GetCVType( type->member32.type );
int elem_size = subtype? DEBUG_GetObjectSize( subtype ) : 0;
DEBUG_AddStructElement( dt, terminate_string( name ),
subtype, offset << 3, elem_size << 3 );
ptr += 2 + 2 + 4 + olen + (1 + name[0]);
break;
}
case LF_STMEMBER:
/* FIXME: ignored for now */
ptr += 2 + 2 + 2 + (1 + type->stmember.name[0]);
break;
case LF_STMEMBER_32:
/* FIXME: ignored for now */
ptr += 2 + 4 + 2 + (1 + type->stmember32.name[0]);
break;
case LF_METHOD:
/* FIXME: ignored for now */
ptr += 2 + 2 + 2 + (1 + type->method.name[0]);
break;
case LF_METHOD_32:
/* FIXME: ignored for now */
ptr += 2 + 2 + 4 + (1 + type->method32.name[0]);
break;
case LF_NESTTYPE:
/* FIXME: ignored for now */
ptr += 2 + 2 + (1 + type->nesttype.name[0]);
break;
case LF_NESTTYPE_32:
/* FIXME: ignored for now */
ptr += 2 + 2 + 4 + (1 + type->nesttype32.name[0]);
break;
case LF_VFUNCTAB:
/* FIXME: ignored for now */
ptr += 2 + 2;
break;
case LF_VFUNCTAB_32:
/* FIXME: ignored for now */
ptr += 2 + 2 + 4;
break;
case LF_ONEMETHOD:
/* FIXME: ignored for now */
switch ( (type->onemethod.attribute >> 2) & 7 )
{
case 4: case 6: /* (pure) introducing virtual method */
ptr += 2 + 2 + 2 + 4 + (1 + type->onemethod_virt.name[0]);
break;
default:
ptr += 2 + 2 + 2 + (1 + type->onemethod.name[0]);
break;
}
break;
case LF_ONEMETHOD_32:
/* FIXME: ignored for now */
switch ( (type->onemethod32.attribute >> 2) & 7 )
{
case 4: case 6: /* (pure) introducing virtual method */
ptr += 2 + 2 + 4 + 4 + (1 + type->onemethod32_virt.name[0]);
break;
default:
ptr += 2 + 2 + 4 + (1 + type->onemethod32.name[0]);
break;
}
break;
default:
DEBUG_Printf( DBG_CHN_MESG, "Unhandled type %04x in STRUCT field list\n",
type->generic.id );
return FALSE;
}
}
return DEBUG_AddCVType( typeno, dt );
}
static int
DEBUG_AddCVType_Enum( unsigned int typeno, char *name, unsigned int fieldlist )
{
struct datatype *dt = DEBUG_NewDataType( DT_ENUM, name );
struct datatype *list = DEBUG_GetCVType( fieldlist );
if ( list )
DEBUG_CopyFieldlist( dt, list );
return DEBUG_AddCVType( typeno, dt );
}
static int
DEBUG_AddCVType_Struct( unsigned int typeno, char *name, int structlen, unsigned int fieldlist )
{
struct datatype *dt = DEBUG_NewDataType( DT_STRUCT, name );
struct datatype *list = DEBUG_GetCVType( fieldlist );
if ( list )
{
DEBUG_SetStructSize( dt, structlen );
DEBUG_CopyFieldlist( dt, list );
}
return DEBUG_AddCVType( typeno, dt );
}
static int
DEBUG_ParseTypeTable( char *table, int len )
{
unsigned int curr_type = 0x1000;
char *ptr = table;
while ( ptr - table < len )
{
union codeview_type *type = (union codeview_type *) ptr;
int retv = TRUE;
switch ( type->generic.id )
{
case LF_POINTER:
retv = DEBUG_AddCVType_Pointer( curr_type, type->pointer.datatype );
break;
case LF_POINTER_32:
retv = DEBUG_AddCVType_Pointer( curr_type, type->pointer32.datatype );
break;
case LF_ARRAY:
{
int arrlen, alen = numeric_leaf( &arrlen, &type->array.arrlen );
unsigned char *name = (unsigned char *)&type->array.arrlen + alen;
retv = DEBUG_AddCVType_Array( curr_type, terminate_string( name ),
type->array.elemtype, arrlen );
break;
}
case LF_ARRAY_32:
{
int arrlen, alen = numeric_leaf( &arrlen, &type->array32.arrlen );
unsigned char *name = (unsigned char *)&type->array32.arrlen + alen;
retv = DEBUG_AddCVType_Array( curr_type, terminate_string( name ),
type->array32.elemtype, type->array32.arrlen );
break;
}
case LF_BITFIELD:
retv = DEBUG_AddCVType_Bitfield( curr_type, type->bitfield.bitoff,
type->bitfield.nbits,
type->bitfield.type );
break;
case LF_BITFIELD_32:
retv = DEBUG_AddCVType_Bitfield( curr_type, type->bitfield32.bitoff,
type->bitfield32.nbits,
type->bitfield32.type );
break;
case LF_FIELDLIST:
case LF_FIELDLIST_32:
{
/*
* A 'field list' is a CodeView-specific data type which doesn't
* directly correspond to any high-level data type. It is used
* to hold the collection of members of a struct, class, union
* or enum type. The actual definition of that type will follow
* later, and refer to the field list definition record.
*
* As we don't have a field list type ourselves, we look ahead
* in the field list to try to find out whether this field list
* will be used for an enum or struct type, and create a dummy
* type of the corresponding sort. Later on, the definition of
* the 'real' type will copy the member / enumeration data.
*/
char *list = type->fieldlist.list;
int len = (ptr + type->generic.len + 2) - list;
if ( ((union codeview_fieldtype *)list)->generic.id == LF_ENUMERATE )
retv = DEBUG_AddCVType_EnumFieldList( curr_type, list, len );
else
retv = DEBUG_AddCVType_StructFieldList( curr_type, list, len );
break;
}
case LF_STRUCTURE:
case LF_CLASS:
{
int structlen, slen = numeric_leaf( &structlen, &type->structure.structlen );
unsigned char *name = (unsigned char *)&type->structure.structlen + slen;
retv = DEBUG_AddCVType_Struct( curr_type, terminate_string( name ),
structlen, type->structure.fieldlist );
break;
}
case LF_STRUCTURE_32:
case LF_CLASS_32:
{
int structlen, slen = numeric_leaf( &structlen, &type->structure32.structlen );
unsigned char *name = (unsigned char *)&type->structure32.structlen + slen;
retv = DEBUG_AddCVType_Struct( curr_type, terminate_string( name ),
structlen, type->structure32.fieldlist );
break;
}
case LF_UNION:
{
int un_len, ulen = numeric_leaf( &un_len, &type->t_union.un_len );
unsigned char *name = (unsigned char *)&type->t_union.un_len + ulen;
retv = DEBUG_AddCVType_Struct( curr_type, terminate_string( name ),
un_len, type->t_union.fieldlist );
break;
}
case LF_UNION_32:
{
int un_len, ulen = numeric_leaf( &un_len, &type->t_union32.un_len );
unsigned char *name = (unsigned char *)&type->t_union32.un_len + ulen;
retv = DEBUG_AddCVType_Struct( curr_type, terminate_string( name ),
un_len, type->t_union32.fieldlist );
break;
}
case LF_ENUM:
retv = DEBUG_AddCVType_Enum( curr_type, terminate_string( type->enumeration.name ),
type->enumeration.field );
break;
case LF_ENUM_32:
retv = DEBUG_AddCVType_Enum( curr_type, terminate_string( type->enumeration32.name ),
type->enumeration32.field );
break;
default:
break;
}
if ( !retv )
return FALSE;
curr_type++;
ptr += type->generic.len + 2;
}
return TRUE;
}
/*========================================================================
* Process CodeView line number information.
*/
union any_size
{
char * c;
short * s;
int * i;
unsigned int * ui;
};
struct startend
{
unsigned int start;
unsigned int end;
};
struct codeview_linetab_hdr
{
unsigned int nline;
unsigned int segno;
unsigned int start;
unsigned int end;
char * sourcefile;
unsigned short * linetab;
unsigned int * offtab;
};
static struct codeview_linetab_hdr *
DEBUG_SnarfLinetab(char * linetab,
int size)
{
int file_segcount;
char filename[PATH_MAX];
unsigned int * filetab;
char * fn;
int i;
int k;
struct codeview_linetab_hdr * lt_hdr;
unsigned int * lt_ptr;
int nfile;
int nseg;
union any_size pnt;
union any_size pnt2;
struct startend * start;
int this_seg;
/*
* Now get the important bits.
*/
pnt.c = linetab;
nfile = *pnt.s++;
nseg = *pnt.s++;
filetab = (unsigned int *) pnt.c;
/*
* Now count up the number of segments in the file.
*/
nseg = 0;
for(i=0; i<nfile; i++)
{
pnt2.c = linetab + filetab[i];
nseg += *pnt2.s;
}
/*
* Next allocate the header we will be returning.
* There is one header for each segment, so that we can reach in
* and pull bits as required.
*/
lt_hdr = (struct codeview_linetab_hdr *)
DBG_alloc((nseg + 1) * sizeof(*lt_hdr));
if( lt_hdr == NULL )
{
goto leave;
}
memset(lt_hdr, 0, sizeof(*lt_hdr) * (nseg+1));
/*
* Now fill the header we will be returning, one for each segment.
* Note that this will basically just contain pointers into the existing
* line table, and we do not actually copy any additional information
* or allocate any additional memory.
*/
this_seg = 0;
for(i=0; i<nfile; i++)
{
/*
* Get the pointer into the segment information.
*/
pnt2.c = linetab + filetab[i];
file_segcount = *pnt2.s;
pnt2.ui++;
lt_ptr = (unsigned int *) pnt2.c;
start = (struct startend *) (lt_ptr + file_segcount);
/*
* Now snarf the filename for all of the segments for this file.
*/
fn = (unsigned char *) (start + file_segcount);
memset(filename, 0, sizeof(filename));
memcpy(filename, fn + 1, *fn);
fn = DBG_strdup(filename);
for(k = 0; k < file_segcount; k++, this_seg++)
{
pnt2.c = linetab + lt_ptr[k];
lt_hdr[this_seg].start = start[k].start;
lt_hdr[this_seg].end = start[k].end;
lt_hdr[this_seg].sourcefile = fn;
lt_hdr[this_seg].segno = *pnt2.s++;
lt_hdr[this_seg].nline = *pnt2.s++;
lt_hdr[this_seg].offtab = pnt2.ui;
lt_hdr[this_seg].linetab = (unsigned short *)
(pnt2.ui + lt_hdr[this_seg].nline);
}
}
leave:
return lt_hdr;
}
/*========================================================================
* Process CodeView symbol information.
*/
union codeview_symbol
{
struct
{
short int len;
short int id;
} generic;
struct
{
short int len;
short int id;
unsigned int offset;
unsigned short seg;
unsigned short symtype;
unsigned char namelen;
unsigned char name[1];
} data;
struct
{
short int len;
short int id;
unsigned int symtype;
unsigned int offset;
unsigned short seg;
unsigned char namelen;
unsigned char name[1];
} data32;
struct
{
short int len;
short int id;
unsigned int pparent;
unsigned int pend;
unsigned int next;
unsigned int offset;
unsigned short segment;
unsigned short thunk_len;
unsigned char thtype;
unsigned char namelen;
unsigned char name[1];
} thunk;
struct
{
short int len;
short int id;
unsigned int pparent;
unsigned int pend;
unsigned int next;
unsigned int proc_len;
unsigned int debug_start;
unsigned int debug_end;
unsigned int offset;
unsigned short segment;
unsigned short proctype;
unsigned char flags;
unsigned char namelen;
unsigned char name[1];
} proc;
struct
{
short int len;
short int id;
unsigned int pparent;
unsigned int pend;
unsigned int next;
unsigned int proc_len;
unsigned int debug_start;
unsigned int debug_end;
unsigned int proctype;
unsigned int offset;
unsigned short segment;
unsigned char flags;
unsigned char namelen;
unsigned char name[1];
} proc32;
struct
{
short int len; /* Total length of this entry */
short int id; /* Always S_BPREL32 */
unsigned int offset; /* Stack offset relative to BP */
unsigned short symtype;
unsigned char namelen;
unsigned char name[1];
} stack;
struct
{
short int len; /* Total length of this entry */
short int id; /* Always S_BPREL32 */
unsigned int offset; /* Stack offset relative to BP */
unsigned int symtype;
unsigned char namelen;
unsigned char name[1];
} stack32;
};
#define S_COMPILE 0x0001
#define S_REGISTER 0x0002
#define S_CONSTANT 0x0003
#define S_UDT 0x0004
#define S_SSEARCH 0x0005
#define S_END 0x0006
#define S_SKIP 0x0007
#define S_CVRESERVE 0x0008
#define S_OBJNAME 0x0009
#define S_ENDARG 0x000a
#define S_COBOLUDT 0x000b
#define S_MANYREG 0x000c
#define S_RETURN 0x000d
#define S_ENTRYTHIS 0x000e
#define S_BPREL 0x0200
#define S_LDATA 0x0201
#define S_GDATA 0x0202
#define S_PUB 0x0203
#define S_LPROC 0x0204
#define S_GPROC 0x0205
#define S_THUNK 0x0206
#define S_BLOCK 0x0207
#define S_WITH 0x0208
#define S_LABEL 0x0209
#define S_CEXMODEL 0x020a
#define S_VFTPATH 0x020b
#define S_REGREL 0x020c
#define S_LTHREAD 0x020d
#define S_GTHREAD 0x020e
#define S_PROCREF 0x0400
#define S_DATAREF 0x0401
#define S_ALIGN 0x0402
#define S_LPROCREF 0x0403
#define S_REGISTER_32 0x1001 /* Variants with new 32-bit type indices */
#define S_CONSTANT_32 0x1002
#define S_UDT_32 0x1003
#define S_COBOLUDT_32 0x1004
#define S_MANYREG_32 0x1005
#define S_BPREL_32 0x1006
#define S_LDATA_32 0x1007
#define S_GDATA_32 0x1008
#define S_PUB_32 0x1009
#define S_LPROC_32 0x100a
#define S_GPROC_32 0x100b
#define S_VFTTABLE_32 0x100c
#define S_REGREL_32 0x100d
#define S_LTHREAD_32 0x100e
#define S_GTHREAD_32 0x100f
static unsigned int
DEBUG_MapCVOffset( DBG_MODULE *module, unsigned int offset )
{
int nomap = module->msc_info->nomap;
OMAP_DATA *omapp = module->msc_info->omapp;
int i;
if ( !nomap || !omapp )
return offset;
/* FIXME: use binary search */
for ( i = 0; i < nomap-1; i++ )
if ( omapp[i].from <= offset && omapp[i+1].from > offset )
return !omapp[i].to? 0 : omapp[i].to + (offset - omapp[i].from);
return 0;
}
static struct name_hash *
DEBUG_AddCVSymbol( DBG_MODULE *module, char *name, int namelen,
int type, unsigned int seg, unsigned int offset,
int size, int cookie, int flags,
struct codeview_linetab_hdr *linetab )
{
int nsect = module->msc_info->nsect;
PIMAGE_SECTION_HEADER sectp = module->msc_info->sectp;
struct name_hash *symbol;
char symname[PATH_MAX];
DBG_VALUE value;
/*
* Some sanity checks
*/
if ( !name || !namelen )
return NULL;
if ( !seg || seg > nsect )
return NULL;
/*
* Convert type, address, and symbol name
*/
value.type = type? DEBUG_GetCVType( type ) : NULL;
value.cookie = cookie;
value.addr.seg = 0;
value.addr.off = (unsigned int) module->load_addr +
DEBUG_MapCVOffset( module, sectp[seg-1].VirtualAddress + offset );
memcpy( symname, name, namelen );
symname[namelen] = '\0';
/*
* Check whether we have line number information
*/
if ( linetab )
{
for ( ; linetab->linetab; linetab++ )
if ( linetab->segno == seg
&& linetab->start <= offset
&& linetab->end > offset )
break;
if ( !linetab->linetab )
linetab = NULL;
}
/*
* Create Wine symbol record
*/
symbol = DEBUG_AddSymbol( symname, &value,
linetab? linetab->sourcefile : NULL, flags );
if ( size )
DEBUG_SetSymbolSize( symbol, size );
/*
* Add line numbers if found
*/
if ( linetab )
{
unsigned int i;
for ( i = 0; i < linetab->nline; i++ )
if ( linetab->offtab[i] >= offset
&& linetab->offtab[i] < offset + size )
{
DEBUG_AddLineNumber( symbol, linetab->linetab[i],
linetab->offtab[i] - offset );
}
}
return symbol;
}
static struct wine_locals *
DEBUG_AddCVLocal( struct name_hash *func, char *name, int namelen,
int type, int offset )
{
struct wine_locals *local;
char symname[PATH_MAX];
memcpy( symname, name, namelen );
symname[namelen] = '\0';
local = DEBUG_AddLocal( func, 0, offset, 0, 0, symname );
DEBUG_SetLocalSymbolType( local, DEBUG_GetCVType( type ) );
return local;
}
static int
DEBUG_SnarfCodeView( DBG_MODULE *module, LPBYTE root, int offset, int size,
struct codeview_linetab_hdr *linetab )
{
struct name_hash *curr_func = NULL;
int i, length;
/*
* Loop over the different types of records and whenever we
* find something we are interested in, record it and move on.
*/
for ( i = offset; i < size; i += length )
{
union codeview_symbol *sym = (union codeview_symbol *)(root + i);
length = sym->generic.len + 2;
switch ( sym->generic.id )
{
/*
* Global and local data symbols. We don't associate these
* with any given source file.
*/
case S_GDATA:
case S_LDATA:
case S_PUB:
DEBUG_AddCVSymbol( module, sym->data.name, sym->data.namelen,
sym->data.symtype, sym->data.seg,
sym->data.offset, 0,
DV_TARGET, SYM_WIN32 | SYM_DATA, NULL );
break;
case S_GDATA_32:
case S_LDATA_32:
case S_PUB_32:
DEBUG_AddCVSymbol( module, sym->data32.name, sym->data32.namelen,
sym->data32.symtype, sym->data32.seg,
sym->data32.offset, 0,
DV_TARGET, SYM_WIN32 | SYM_DATA, NULL );
break;
/*
* Sort of like a global function, but it just points
* to a thunk, which is a stupid name for what amounts to
* a PLT slot in the normal jargon that everyone else uses.
*/
case S_THUNK:
DEBUG_AddCVSymbol( module, sym->thunk.name, sym->thunk.namelen,
0, sym->thunk.segment,
sym->thunk.offset, sym->thunk.thunk_len,
DV_TARGET, SYM_WIN32 | SYM_FUNC, NULL );
break;
/*
* Global and static functions.
*/
case S_GPROC:
case S_LPROC:
DEBUG_Normalize( curr_func );
curr_func = DEBUG_AddCVSymbol( module, sym->proc.name, sym->proc.namelen,
sym->proc.proctype, sym->proc.segment,
sym->proc.offset, sym->proc.proc_len,
DV_TARGET, SYM_WIN32 | SYM_FUNC, linetab );
DEBUG_SetSymbolBPOff( curr_func, sym->proc.debug_start );
break;
case S_GPROC_32:
case S_LPROC_32:
DEBUG_Normalize( curr_func );
curr_func = DEBUG_AddCVSymbol( module, sym->proc32.name, sym->proc32.namelen,
sym->proc32.proctype, sym->proc32.segment,
sym->proc32.offset, sym->proc32.proc_len,
DV_TARGET, SYM_WIN32 | SYM_FUNC, linetab );
DEBUG_SetSymbolBPOff( curr_func, sym->proc32.debug_start );
break;
/*
* Function parameters and stack variables.
*/
case S_BPREL:
DEBUG_AddCVLocal( curr_func, sym->stack.name, sym->stack.namelen,
sym->stack.symtype, sym->stack.offset );
break;
case S_BPREL_32:
DEBUG_AddCVLocal( curr_func, sym->stack32.name, sym->stack32.namelen,
sym->stack32.symtype, sym->stack32.offset );
break;
/*
* These are special, in that they are always followed by an
* additional length-prefixed string which is *not* included
* into the symbol length count. We need to skip it.
*/
case S_PROCREF:
case S_DATAREF:
case S_LPROCREF:
{
LPBYTE name = (LPBYTE)sym + length;
length += (*name + 1 + 3) & ~3;
break;
}
}
}
DEBUG_Normalize( curr_func );
if ( linetab ) DBG_free(linetab);
return TRUE;
}
/*========================================================================
* Process PDB file.
*/
#pragma pack(1)
typedef struct _PDB_FILE
{
DWORD size;
DWORD unknown;
} PDB_FILE, *PPDB_FILE;
typedef struct _PDB_HEADER
{
CHAR ident[40];
DWORD signature;
DWORD blocksize;
WORD freelist;
WORD total_alloc;
PDB_FILE toc;
WORD toc_block[ 1 ];
} PDB_HEADER, *PPDB_HEADER;
typedef struct _PDB_TOC
{
DWORD nFiles;
PDB_FILE file[ 1 ];
} PDB_TOC, *PPDB_TOC;
typedef struct _PDB_ROOT
{
DWORD version;
DWORD TimeDateStamp;
DWORD unknown;
DWORD cbNames;
CHAR names[ 1 ];
} PDB_ROOT, *PPDB_ROOT;
typedef struct _PDB_TYPES_OLD
{
DWORD version;
WORD first_index;
WORD last_index;
DWORD type_size;
WORD file;
WORD pad;
} PDB_TYPES_OLD, *PPDB_TYPES_OLD;
typedef struct _PDB_TYPES
{
DWORD version;
DWORD type_offset;
DWORD first_index;
DWORD last_index;
DWORD type_size;
WORD file;
WORD pad;
DWORD hash_size;
DWORD hash_base;
DWORD hash_offset;
DWORD hash_len;
DWORD search_offset;
DWORD search_len;
DWORD unknown_offset;
DWORD unknown_len;
} PDB_TYPES, *PPDB_TYPES;
typedef struct _PDB_SYMBOL_RANGE
{
WORD segment;
WORD pad1;
DWORD offset;
DWORD size;
DWORD characteristics;
WORD index;
WORD pad2;
} PDB_SYMBOL_RANGE, *PPDB_SYMBOL_RANGE;
typedef struct _PDB_SYMBOL_RANGE_EX
{
WORD segment;
WORD pad1;
DWORD offset;
DWORD size;
DWORD characteristics;
WORD index;
WORD pad2;
DWORD timestamp;
DWORD unknown;
} PDB_SYMBOL_RANGE_EX, *PPDB_SYMBOL_RANGE_EX;
typedef struct _PDB_SYMBOL_FILE
{
DWORD unknown1;
PDB_SYMBOL_RANGE range;
WORD flag;
WORD file;
DWORD symbol_size;
DWORD lineno_size;
DWORD unknown2;
DWORD nSrcFiles;
DWORD attribute;
CHAR filename[ 1 ];
} PDB_SYMBOL_FILE, *PPDB_SYMBOL_FILE;
typedef struct _PDB_SYMBOL_FILE_EX
{
DWORD unknown1;
PDB_SYMBOL_RANGE_EX range;
WORD flag;
WORD file;
DWORD symbol_size;
DWORD lineno_size;
DWORD unknown2;
DWORD nSrcFiles;
DWORD attribute;
DWORD reserved[ 2 ];
CHAR filename[ 1 ];
} PDB_SYMBOL_FILE_EX, *PPDB_SYMBOL_FILE_EX;
typedef struct _PDB_SYMBOL_SOURCE
{
WORD nModules;
WORD nSrcFiles;
WORD table[ 1 ];
} PDB_SYMBOL_SOURCE, *PPDB_SYMBOL_SOURCE;
typedef struct _PDB_SYMBOL_IMPORT
{
DWORD unknown1;
DWORD unknown2;
DWORD TimeDateStamp;
DWORD nRequests;
CHAR filename[ 1 ];
} PDB_SYMBOL_IMPORT, *PPDB_SYMBOL_IMPORT;
typedef struct _PDB_SYMBOLS_OLD
{
WORD hash1_file;
WORD hash2_file;
WORD gsym_file;
WORD pad;
DWORD module_size;
DWORD offset_size;
DWORD hash_size;
DWORD srcmodule_size;
} PDB_SYMBOLS_OLD, *PPDB_SYMBOLS_OLD;
typedef struct _PDB_SYMBOLS
{
DWORD signature;
DWORD version;
DWORD unknown;
DWORD hash1_file;
DWORD hash2_file;
DWORD gsym_file;
DWORD module_size;
DWORD offset_size;
DWORD hash_size;
DWORD srcmodule_size;
DWORD pdbimport_size;
DWORD resvd[ 5 ];
} PDB_SYMBOLS, *PPDB_SYMBOLS;
#pragma pack()
static void *pdb_read( LPBYTE image, WORD *block_list, int size )
{
PPDB_HEADER pdb = (PPDB_HEADER)image;
int i, nBlocks;
LPBYTE buffer;
if ( !size ) return NULL;
nBlocks = (size + pdb->blocksize-1) / pdb->blocksize;
buffer = DBG_alloc( nBlocks * pdb->blocksize );
for ( i = 0; i < nBlocks; i++ )
memcpy( buffer + i*pdb->blocksize,
image + block_list[i]*pdb->blocksize, pdb->blocksize );
return buffer;
}
static void *pdb_read_file( LPBYTE image, PPDB_TOC toc, DWORD fileNr )
{
PPDB_HEADER pdb = (PPDB_HEADER)image;
WORD *block_list;
DWORD i;
if ( !toc || fileNr >= toc->nFiles )
return NULL;
block_list = (WORD *) &toc->file[ toc->nFiles ];
for ( i = 0; i < fileNr; i++ )
block_list += (toc->file[i].size + pdb->blocksize-1) / pdb->blocksize;
return pdb_read( image, block_list, toc->file[fileNr].size );
}
static void pdb_free( void *buffer )
{
DBG_free( buffer );
}
static void pdb_convert_types_header( PDB_TYPES *types, char *image )
{
memset( types, 0, sizeof(PDB_TYPES) );
if ( !image ) return;
if ( *(DWORD *)image < 19960000 ) /* FIXME: correct version? */
{
/* Old version of the types record header */
PDB_TYPES_OLD *old = (PDB_TYPES_OLD *)image;
types->version = old->version;
types->type_offset = sizeof(PDB_TYPES_OLD);
types->type_size = old->type_size;
types->first_index = old->first_index;
types->last_index = old->last_index;
types->file = old->file;
}
else
{
/* New version of the types record header */
*types = *(PDB_TYPES *)image;
}
}
static void pdb_convert_symbols_header( PDB_SYMBOLS *symbols,
int *header_size, char *image )
{
memset( symbols, 0, sizeof(PDB_SYMBOLS) );
if ( !image ) return;
if ( *(DWORD *)image != 0xffffffff )
{
/* Old version of the symbols record header */
PDB_SYMBOLS_OLD *old = (PDB_SYMBOLS_OLD *)image;
symbols->version = 0;
symbols->module_size = old->module_size;
symbols->offset_size = old->offset_size;
symbols->hash_size = old->hash_size;
symbols->srcmodule_size = old->srcmodule_size;
symbols->pdbimport_size = 0;
symbols->hash1_file = old->hash1_file;
symbols->hash2_file = old->hash2_file;
symbols->gsym_file = old->gsym_file;
*header_size = sizeof(PDB_SYMBOLS_OLD);
}
else
{
/* New version of the symbols record header */
*symbols = *(PDB_SYMBOLS *)image;
*header_size = sizeof(PDB_SYMBOLS);
}
}
static enum DbgInfoLoad DEBUG_ProcessPDBFile( DBG_MODULE *module,
const char *filename, DWORD timestamp )
{
enum DbgInfoLoad dil = DIL_ERROR;
HANDLE hFile, hMap;
char *image = NULL;
PDB_HEADER *pdb = NULL;
PDB_TOC *toc = NULL;
PDB_ROOT *root = NULL;
char *types_image = NULL;
char *symbols_image = NULL;
PDB_TYPES types;
PDB_SYMBOLS symbols;
int header_size = 0;
char *modimage, *file;
DEBUG_Printf( DBG_CHN_TRACE, "Processing PDB file %s\n", filename );
/*
* Open and map() .PDB file
*/
image = DEBUG_MapDebugInfoFile( filename, 0, 0, &hFile, &hMap );
if ( !image )
{
DEBUG_Printf( DBG_CHN_ERR, "-Unable to peruse .PDB file %s\n", filename );
goto leave;
}
/*
* Read in TOC and well-known files
*/
pdb = (PPDB_HEADER)image;
toc = pdb_read( image, pdb->toc_block, pdb->toc.size );
root = pdb_read_file( image, toc, 1 );
types_image = pdb_read_file( image, toc, 2 );
symbols_image = pdb_read_file( image, toc, 3 );
pdb_convert_types_header( &types, types_image );
pdb_convert_symbols_header( &symbols, &header_size, symbols_image );
/*
* Check for unknown versions
*/
switch ( root->version )
{
case 19950623: /* VC 4.0 */
case 19950814:
case 19960307: /* VC 5.0 */
case 19970604: /* VC 6.0 */
break;
default:
DEBUG_Printf( DBG_CHN_ERR, "-Unknown root block version %ld\n", root->version );
}
switch ( types.version )
{
case 19950410: /* VC 4.0 */
case 19951122:
case 19961031: /* VC 5.0 / 6.0 */
break;
default:
DEBUG_Printf( DBG_CHN_ERR, "-Unknown type info version %ld\n", types.version );
}
switch ( symbols.version )
{
case 0: /* VC 4.0 */
case 19960307: /* VC 5.0 */
case 19970606: /* VC 6.0 */
break;
default:
DEBUG_Printf( DBG_CHN_ERR, "-Unknown symbol info version %ld\n", symbols.version );
}
/*
* Check .PDB time stamp
*/
if ( root->TimeDateStamp != timestamp )
{
DEBUG_Printf( DBG_CHN_ERR, "-Wrong time stamp of .PDB file %s (0x%08lx, 0x%08lx)\n",
filename, root->TimeDateStamp, timestamp );
}
/*
* Read type table
*/
DEBUG_ParseTypeTable( types_image + types.type_offset, types.type_size );
/*
* Read type-server .PDB imports
*/
if ( symbols.pdbimport_size )
{
/* FIXME */
DEBUG_Printf(DBG_CHN_ERR, "-Type server .PDB imports ignored!\n" );
}
/*
* Read global symbol table
*/
modimage = pdb_read_file( image, toc, symbols.gsym_file );
if ( modimage )
{
DEBUG_SnarfCodeView( module, modimage, 0,
toc->file[symbols.gsym_file].size, NULL );
pdb_free( modimage );
}
/*
* Read per-module symbol / linenumber tables
*/
file = symbols_image + header_size;
while ( file - symbols_image < header_size + symbols.module_size )
{
int file_nr, file_index, symbol_size, lineno_size;
char *file_name;
if ( symbols.version < 19970000 )
{
PDB_SYMBOL_FILE *sym_file = (PDB_SYMBOL_FILE *) file;
file_nr = sym_file->file;
file_name = sym_file->filename;
file_index = sym_file->range.index;
symbol_size = sym_file->symbol_size;
lineno_size = sym_file->lineno_size;
}
else
{
PDB_SYMBOL_FILE_EX *sym_file = (PDB_SYMBOL_FILE_EX *) file;
file_nr = sym_file->file;
file_name = sym_file->filename;
file_index = sym_file->range.index;
symbol_size = sym_file->symbol_size;
lineno_size = sym_file->lineno_size;
}
modimage = pdb_read_file( image, toc, file_nr );
if ( modimage )
{
struct codeview_linetab_hdr *linetab = NULL;
if ( lineno_size )
linetab = DEBUG_SnarfLinetab( modimage + symbol_size, lineno_size );
if ( symbol_size )
DEBUG_SnarfCodeView( module, modimage, sizeof(DWORD),
symbol_size, linetab );
pdb_free( modimage );
}
file_name += strlen(file_name) + 1;
file = (char *)( (DWORD)(file_name + strlen(file_name) + 1 + 3) & ~3 );
}
dil = DIL_LOADED;
leave:
/*
* Cleanup
*/
DEBUG_ClearTypeTable();
if ( symbols_image ) pdb_free( symbols_image );
if ( types_image ) pdb_free( types_image );
if ( root ) pdb_free( root );
if ( toc ) pdb_free( toc );
DEBUG_UnmapDebugInfoFile(hFile, hMap, image);
return dil;
}
/*========================================================================
* Process CodeView debug information.
*/
#define CODEVIEW_NB09_SIG ( 'N' | ('B' << 8) | ('0' << 16) | ('9' << 24) )
#define CODEVIEW_NB10_SIG ( 'N' | ('B' << 8) | ('1' << 16) | ('0' << 24) )
#define CODEVIEW_NB11_SIG ( 'N' | ('B' << 8) | ('1' << 16) | ('1' << 24) )
typedef struct _CODEVIEW_HEADER
{
DWORD dwSignature;
DWORD lfoDirectory;
} CODEVIEW_HEADER, *PCODEVIEW_HEADER;
typedef struct _CODEVIEW_PDB_DATA
{
DWORD timestamp;
DWORD unknown;
CHAR name[ 1 ];
} CODEVIEW_PDB_DATA, *PCODEVIEW_PDB_DATA;
typedef struct _CV_DIRECTORY_HEADER
{
WORD cbDirHeader;
WORD cbDirEntry;
DWORD cDir;
DWORD lfoNextDir;
DWORD flags;
} CV_DIRECTORY_HEADER, *PCV_DIRECTORY_HEADER;
typedef struct _CV_DIRECTORY_ENTRY
{
WORD subsection;
WORD iMod;
DWORD lfo;
DWORD cb;
} CV_DIRECTORY_ENTRY, *PCV_DIRECTORY_ENTRY;
#define sstAlignSym 0x125
#define sstSrcModule 0x127
static enum DbgInfoLoad DEBUG_ProcessCodeView( DBG_MODULE *module, LPBYTE root )
{
PCODEVIEW_HEADER cv = (PCODEVIEW_HEADER)root;
enum DbgInfoLoad dil = DIL_ERROR;
switch ( cv->dwSignature )
{
case CODEVIEW_NB09_SIG:
case CODEVIEW_NB11_SIG:
{
PCV_DIRECTORY_HEADER hdr = (PCV_DIRECTORY_HEADER)(root + cv->lfoDirectory);
PCV_DIRECTORY_ENTRY ent, prev, next;
unsigned int i;
ent = (PCV_DIRECTORY_ENTRY)((LPBYTE)hdr + hdr->cbDirHeader);
for ( i = 0; i < hdr->cDir; i++, ent = next )
{
next = (i == hdr->cDir-1)? NULL :
(PCV_DIRECTORY_ENTRY)((LPBYTE)ent + hdr->cbDirEntry);
prev = (i == 0)? NULL :
(PCV_DIRECTORY_ENTRY)((LPBYTE)ent - hdr->cbDirEntry);
if ( ent->subsection == sstAlignSym )
{
/*
* Check the next and previous entry. If either is a
* sstSrcModule, it contains the line number info for
* this file.
*
* FIXME: This is not a general solution!
*/
struct codeview_linetab_hdr *linetab = NULL;
if ( next && next->iMod == ent->iMod
&& next->subsection == sstSrcModule )
linetab = DEBUG_SnarfLinetab( root + next->lfo, next->cb );
if ( prev && prev->iMod == ent->iMod
&& prev->subsection == sstSrcModule )
linetab = DEBUG_SnarfLinetab( root + prev->lfo, prev->cb );
DEBUG_SnarfCodeView( module, root + ent->lfo, sizeof(DWORD),
ent->cb, linetab );
}
}
dil = DIL_LOADED;
break;
}
case CODEVIEW_NB10_SIG:
{
PCODEVIEW_PDB_DATA pdb = (PCODEVIEW_PDB_DATA)(cv + 1);
dil = DEBUG_ProcessPDBFile( module, pdb->name, pdb->timestamp );
break;
}
default:
DEBUG_Printf( DBG_CHN_ERR, "Unknown CODEVIEW signature %08lX in module %s\n",
cv->dwSignature, module->module_name );
break;
}
return dil;
}
/*========================================================================
* Process debug directory.
*/
static enum DbgInfoLoad DEBUG_ProcessDebugDirectory( DBG_MODULE *module,
LPBYTE file_map,
PIMAGE_DEBUG_DIRECTORY dbg,
int nDbg )
{
enum DbgInfoLoad dil = DIL_ERROR;
int i;
/* First, watch out for OMAP data */
for ( i = 0; i < nDbg; i++ )
if ( dbg[i].Type == IMAGE_DEBUG_TYPE_OMAP_FROM_SRC )
{
module->msc_info->nomap = dbg[i].SizeOfData / sizeof(OMAP_DATA);
module->msc_info->omapp = (OMAP_DATA *)(file_map + dbg[i].PointerToRawData);
break;
}
/* Now, try to parse CodeView debug info */
for ( i = 0; dil != DIL_LOADED && i < nDbg; i++ )
if ( dbg[i].Type == IMAGE_DEBUG_TYPE_CODEVIEW )
dil = DEBUG_ProcessCodeView( module, file_map + dbg[i].PointerToRawData );
/* If not found, try to parse COFF debug info */
for ( i = 0; dil != DIL_LOADED && i < nDbg; i++ )
if ( dbg[i].Type == IMAGE_DEBUG_TYPE_COFF )
dil = DEBUG_ProcessCoff( module, file_map + dbg[i].PointerToRawData );
#if 0
/* FIXME: this should be supported... this is the debug information for
* functions compiled without a frame pointer (FPO = frame pointer omission)
* the associated data helps finding out the relevant information
*/
for ( i = 0; i < nDbg; i++ )
if ( dbg[i].Type == IMAGE_DEBUG_TYPE_FPO )
DEBUG_Printf(DBG_CHN_MESG, "This guy has FPO information\n");
#define FRAME_FPO 0
#define FRAME_TRAP 1
#define FRAME_TSS 2
typedef struct _FPO_DATA {
DWORD ulOffStart; /* offset 1st byte of function code */
DWORD cbProcSize; /* # bytes in function */
DWORD cdwLocals; /* # bytes in locals/4 */
WORD cdwParams; /* # bytes in params/4 */
WORD cbProlog : 8; /* # bytes in prolog */
WORD cbRegs : 3; /* # regs saved */
WORD fHasSEH : 1; /* TRUE if SEH in func */
WORD fUseBP : 1; /* TRUE if EBP has been allocated */
WORD reserved : 1; /* reserved for future use */
WORD cbFrame : 2; /* frame type */
} FPO_DATA;
#endif
return dil;
}
/*========================================================================
* Process DBG file.
*/
static enum DbgInfoLoad DEBUG_ProcessDBGFile( DBG_MODULE *module,
const char *filename, DWORD timestamp )
{
enum DbgInfoLoad dil = DIL_ERROR;
HANDLE hFile = 0, hMap = 0;
LPBYTE file_map = NULL;
PIMAGE_SEPARATE_DEBUG_HEADER hdr;
PIMAGE_DEBUG_DIRECTORY dbg;
int nDbg;
DEBUG_Printf( DBG_CHN_TRACE, "Processing DBG file %s\n", filename );
file_map = DEBUG_MapDebugInfoFile( filename, 0, 0, &hFile, &hMap );
if ( !file_map )
{
DEBUG_Printf( DBG_CHN_ERR, "-Unable to peruse .DBG file %s\n", filename );
goto leave;
}
hdr = (PIMAGE_SEPARATE_DEBUG_HEADER) file_map;
if ( hdr->TimeDateStamp != timestamp )
{
DEBUG_Printf( DBG_CHN_ERR, "Warning - %s has incorrect internal timestamp\n",
filename );
/*
* Well, sometimes this happens to DBG files which ARE REALLY the right .DBG
* files but nonetheless this check fails. Anyway, WINDBG (debugger for
* Windows by Microsoft) loads debug symbols which have incorrect timestamps.
*/
}
dbg = (PIMAGE_DEBUG_DIRECTORY) ( file_map + sizeof(*hdr)
+ hdr->NumberOfSections * sizeof(IMAGE_SECTION_HEADER)
+ hdr->ExportedNamesSize );
nDbg = hdr->DebugDirectorySize / sizeof(*dbg);
dil = DEBUG_ProcessDebugDirectory( module, file_map, dbg, nDbg );
leave:
DEBUG_UnmapDebugInfoFile( hFile, hMap, file_map );
return dil;
}
/*========================================================================
* Process MSC debug information in PE file.
*/
enum DbgInfoLoad DEBUG_RegisterMSCDebugInfo( DBG_MODULE *module, HANDLE hFile,
void *_nth, unsigned long nth_ofs )
{
enum DbgInfoLoad dil = DIL_ERROR;
PIMAGE_NT_HEADERS nth = (PIMAGE_NT_HEADERS)_nth;
PIMAGE_DATA_DIRECTORY dir = nth->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_DEBUG;
PIMAGE_DEBUG_DIRECTORY dbg = NULL;
int nDbg;
MSC_DBG_INFO extra_info = { 0, NULL, 0, NULL };
HANDLE hMap = 0;
LPBYTE file_map = NULL;
/* Read in section data */
module->msc_info = &extra_info;
extra_info.nsect = nth->FileHeader.NumberOfSections;
extra_info.sectp = DBG_alloc( extra_info.nsect * sizeof(IMAGE_SECTION_HEADER) );
if ( !extra_info.sectp )
goto leave;
if ( !DEBUG_READ_MEM_VERBOSE( (char *)module->load_addr +
nth_ofs + OFFSET_OF(IMAGE_NT_HEADERS, OptionalHeader) +
nth->FileHeader.SizeOfOptionalHeader,
extra_info.sectp,
extra_info.nsect * sizeof(IMAGE_SECTION_HEADER) ) )
goto leave;
/* Read in debug directory */
nDbg = dir->Size / sizeof(IMAGE_DEBUG_DIRECTORY);
if ( !nDbg )
goto leave;
dbg = (PIMAGE_DEBUG_DIRECTORY) DBG_alloc( nDbg * sizeof(IMAGE_DEBUG_DIRECTORY) );
if ( !dbg )
goto leave;
if ( !DEBUG_READ_MEM_VERBOSE( (char *)module->load_addr + dir->VirtualAddress,
dbg, nDbg * sizeof(IMAGE_DEBUG_DIRECTORY) ) )
goto leave;
/* Map in PE file */
file_map = DEBUG_MapDebugInfoFile( NULL, 0, 0, &hFile, &hMap );
if ( !file_map )
goto leave;
/* Parse debug directory */
if ( nth->FileHeader.Characteristics & IMAGE_FILE_DEBUG_STRIPPED )
{
/* Debug info is stripped to .DBG file */
PIMAGE_DEBUG_MISC misc = (PIMAGE_DEBUG_MISC)(file_map + dbg->PointerToRawData);
if ( nDbg != 1 || dbg->Type != IMAGE_DEBUG_TYPE_MISC
|| misc->DataType != IMAGE_DEBUG_MISC_EXENAME )
{
DEBUG_Printf( DBG_CHN_ERR, "-Debug info stripped, but no .DBG file in module %s\n",
module->module_name );
goto leave;
}
dil = DEBUG_ProcessDBGFile( module, misc->Data, nth->FileHeader.TimeDateStamp );
}
else
{
/* Debug info is embedded into PE module */
dil = DEBUG_ProcessDebugDirectory( module, file_map, dbg, nDbg );
}
leave:
module->msc_info = NULL;
DEBUG_UnmapDebugInfoFile( 0, hMap, file_map );
if ( extra_info.sectp ) DBG_free( extra_info.sectp );
if ( dbg ) DBG_free( dbg );
return dil;
}
/*========================================================================
* look for stabs information in PE header (it's how mingw compiler provides its
* debugging information), and also wine PE <-> ELF linking thru .wsolnk sections
*/
enum DbgInfoLoad DEBUG_RegisterStabsDebugInfo(DBG_MODULE* module, HANDLE hFile,
void* _nth, unsigned long nth_ofs)
{
IMAGE_SECTION_HEADER pe_seg;
unsigned long pe_seg_ofs;
int i, stabsize = 0, stabstrsize = 0;
unsigned int stabs = 0, stabstr = 0;
PIMAGE_NT_HEADERS nth = (PIMAGE_NT_HEADERS)_nth;
enum DbgInfoLoad dil = DIL_ERROR;
pe_seg_ofs = nth_ofs + OFFSET_OF(IMAGE_NT_HEADERS, OptionalHeader) +
nth->FileHeader.SizeOfOptionalHeader;
for (i = 0; i < nth->FileHeader.NumberOfSections; i++, pe_seg_ofs += sizeof(pe_seg)) {
if (!DEBUG_READ_MEM_VERBOSE((void*)((char *)module->load_addr + pe_seg_ofs),
&pe_seg, sizeof(pe_seg)))
continue;
if (!strcasecmp(pe_seg.Name, ".stab")) {
stabs = pe_seg.VirtualAddress;
stabsize = pe_seg.SizeOfRawData;
} else if (!strncasecmp(pe_seg.Name, ".stabstr", 8)) {
stabstr = pe_seg.VirtualAddress;
stabstrsize = pe_seg.SizeOfRawData;
}
}
if (stabstrsize && stabsize) {
char* s1 = DBG_alloc(stabsize+stabstrsize);
if (s1) {
if (DEBUG_READ_MEM_VERBOSE((char*)module->load_addr + stabs, s1, stabsize) &&
DEBUG_READ_MEM_VERBOSE((char*)module->load_addr + stabstr,
s1 + stabsize, stabstrsize)) {
dil = DEBUG_ParseStabs(s1, 0, 0, stabsize, stabsize, stabstrsize);
} else {
DEBUG_Printf(DBG_CHN_MESG, "couldn't read data block\n");
}
DBG_free(s1);
} else {
DEBUG_Printf(DBG_CHN_MESG, "couldn't alloc %d bytes\n",
stabsize + stabstrsize);
}
} else {
dil = DIL_NOINFO;
}
return dil;
}
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