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Sweden-Number/debugger/hash.c

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/*
* File hash.c - generate hash tables for Wine debugger symbols
*
* Copyright (C) 1993, Eric Youngdale.
*/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <limits.h>
#include <sys/types.h>
#include "debugger.h"
#define NR_NAME_HASH 16384
#ifndef PATH_MAX
#define PATH_MAX _MAX_PATH
#endif
#ifdef __i386__
static char * reg_name[] =
{
"eax", "ecx", "edx", "ebx", "esp", "ebp", "esi", "edi"
};
static unsigned reg_ofs[] =
{
FIELD_OFFSET(CONTEXT, Eax), FIELD_OFFSET(CONTEXT, Ecx),
FIELD_OFFSET(CONTEXT, Edx), FIELD_OFFSET(CONTEXT, Ebx),
FIELD_OFFSET(CONTEXT, Esp), FIELD_OFFSET(CONTEXT, Ebp),
FIELD_OFFSET(CONTEXT, Esi), FIELD_OFFSET(CONTEXT, Edi)
};
#else
static char * reg_name[] = { NULL }; /* FIXME */
static unsigned reg_ofs[] = { 0 };
#endif
struct name_hash
{
struct name_hash * next; /* Used to look up within name hash */
char * name;
char * sourcefile;
int n_locals;
int locals_alloc;
WineLocals * local_vars;
int n_lines;
int lines_alloc;
WineLineNo * linetab;
DBG_VALUE value;
unsigned short flags;
unsigned short breakpoint_offset;
unsigned int symbol_size;
};
static BOOL DEBUG_GetStackSymbolValue( const char * name, DBG_VALUE *value );
static int sortlist_valid = FALSE;
static int sorttab_nsym;
static struct name_hash ** addr_sorttab = NULL;
static struct name_hash * name_hash_table[NR_NAME_HASH];
static unsigned int name_hash( const char * name )
{
unsigned int hash = 0;
unsigned int tmp;
const char * p;
p = name;
while (*p)
{
hash = (hash << 4) + *p++;
if( (tmp = (hash & 0xf0000000)) )
{
hash ^= tmp >> 24;
}
hash &= ~tmp;
}
return hash % NR_NAME_HASH;
}
int
DEBUG_cmp_sym(const void * p1, const void * p2)
{
struct name_hash ** name1 = (struct name_hash **) p1;
struct name_hash ** name2 = (struct name_hash **) p2;
if( ((*name1)->flags & SYM_INVALID) != 0 )
{
return -1;
}
if( ((*name2)->flags & SYM_INVALID) != 0 )
{
return 1;
}
if( (*name1)->value.addr.seg > (*name2)->value.addr.seg )
{
return 1;
}
if( (*name1)->value.addr.seg < (*name2)->value.addr.seg )
{
return -1;
}
if( (*name1)->value.addr.off > (*name2)->value.addr.off )
{
return 1;
}
if( (*name1)->value.addr.off < (*name2)->value.addr.off )
{
return -1;
}
return 0;
}
/***********************************************************************
* DEBUG_ResortSymbols
*
* Rebuild sorted list of symbols.
*/
static
void
DEBUG_ResortSymbols(void)
{
struct name_hash *nh;
int nsym = 0;
int i;
for(i=0; i<NR_NAME_HASH; i++)
{
for (nh = name_hash_table[i]; nh; nh = nh->next)
{
if( (nh->flags & SYM_INVALID) == 0 )
nsym++;
else
DEBUG_Printf( DBG_CHN_MESG, "Symbol %s is invalid\n", nh->name );
}
}
sorttab_nsym = nsym;
if( nsym == 0 )
{
return;
}
addr_sorttab = (struct name_hash **) DBG_realloc(addr_sorttab,
nsym * sizeof(struct name_hash *));
nsym = 0;
for(i=0; i<NR_NAME_HASH; i++)
{
for (nh = name_hash_table[i]; nh; nh = nh->next)
{
if( (nh->flags & SYM_INVALID) == 0 )
addr_sorttab[nsym++] = nh;
}
}
qsort(addr_sorttab, nsym,
sizeof(struct name_hash *), DEBUG_cmp_sym);
sortlist_valid = TRUE;
}
/***********************************************************************
* DEBUG_AddSymbol
*
* Add a symbol to the table.
*/
struct name_hash *
DEBUG_AddSymbol( const char * name, const DBG_VALUE *value, const char * source,
int flags)
{
struct name_hash * new;
struct name_hash *nh;
static char prev_source[PATH_MAX] = {'\0', };
static char * prev_duped_source = NULL;
char * c;
int hash;
assert(value->cookie == DV_TARGET || value->cookie == DV_HOST);
hash = name_hash(name);
for (nh = name_hash_table[hash]; nh; nh = nh->next)
{
if( ((nh->flags & SYM_INVALID) != 0) && strcmp(name, nh->name) == 0 )
{
#if 0
DEBUG_Printf(DBG_CHN_MESG, "Changing address for symbol %s (%08lx:%08lx => %08lx:%08lx)\n",
name, nh->value.addr.seg, nh->value.addr.off, value->addr.seg, value->addr.off);
#endif
nh->value.addr = value->addr;
if( nh->value.type == NULL && value->type != NULL )
{
nh->value.type = value->type;
nh->value.cookie = value->cookie;
}
/* it may happen that the same symbol is defined in several compilation
* units, but the linker decides to merge it into a single instance.
* in that case, we don't clear the invalid flag for all the compilation
* units (N_GSYM), and wait to get the symbol from the symtab
*/
if ((flags & SYM_INVALID) == 0)
nh->flags &= ~SYM_INVALID;
return nh;
}
if (nh->value.addr.seg == value->addr.seg &&
nh->value.addr.off == value->addr.off &&
strcmp(name, nh->name) == 0 )
{
return nh;
}
}
#if 0
DEBUG_Printf(DBG_CHN_TRACE, "adding symbol (%s) from file '%s' at 0x%04lx:%08lx\n",
name, source, value->addr.seg, value->addr.off);
#endif
/*
* First see if we already have an entry for this symbol. If so
* return it, so we don't end up with duplicates.
*/
new = (struct name_hash *) DBG_alloc(sizeof(struct name_hash));
new->value = *value;
new->name = DBG_strdup(name);
if( source != NULL )
{
/*
* This is an enhancement to reduce memory consumption. The idea
* is that we duplicate a given string only once. This is a big
* win if there are lots of symbols defined in a given source file.
*/
if( strcmp(source, prev_source) == 0 )
{
new->sourcefile = prev_duped_source;
}
else
{
strcpy(prev_source, source);
prev_duped_source = new->sourcefile = DBG_strdup(source);
}
}
else
{
new->sourcefile = NULL;
}
new->n_lines = 0;
new->lines_alloc = 0;
new->linetab = NULL;
new->n_locals = 0;
new->locals_alloc = 0;
new->local_vars = NULL;
new->flags = flags;
new->next = NULL;
/* Now insert into the hash table */
new->next = name_hash_table[hash];
name_hash_table[hash] = new;
/*
* Check some heuristics based upon the file name to see whether
* we want to step through this guy or not. These are machine generated
* assembly files that are used to translate between the MS way of
* calling things and the GCC way of calling things. In general we
* always want to step through.
*/
if( source != NULL )
{
c = strrchr(source, '.');
if( c != NULL && strcmp(c, ".s") == 0 )
{
c = strrchr(source, '/');
if( c != NULL )
{
c++;
if( (strcmp(c, "callfrom16.s") == 0)
|| (strcmp(c, "callto16.s") == 0)
|| (strcmp(c, "call32.s") == 0) )
{
new->flags |= SYM_TRAMPOLINE;
}
}
}
}
sortlist_valid = FALSE;
return new;
}
BOOL DEBUG_Normalize(struct name_hash * nh )
{
/*
* We aren't adding any more locals or linenumbers to this function.
* Free any spare memory that we might have allocated.
*/
if( nh == NULL )
{
return TRUE;
}
if( nh->n_locals != nh->locals_alloc )
{
nh->locals_alloc = nh->n_locals;
nh->local_vars = DBG_realloc(nh->local_vars,
nh->locals_alloc * sizeof(WineLocals));
}
if( nh->n_lines != nh->lines_alloc )
{
nh->lines_alloc = nh->n_lines;
nh->linetab = DBG_realloc(nh->linetab,
nh->lines_alloc * sizeof(WineLineNo));
}
return TRUE;
}
/***********************************************************************
* DEBUG_GetSymbolValue
*
* Get the address of a named symbol.
*/
BOOL DEBUG_GetSymbolValue( const char * name, const int lineno,
DBG_VALUE *value, int bp_flag )
{
struct name_hash *nh;
for(nh = name_hash_table[name_hash(name)]; nh; nh = nh->next)
{
if( (nh->flags & SYM_INVALID) != 0 )
{
continue;
}
if (!strcmp(nh->name, name)) break;
}
if (!nh && (name[0] != '_'))
{
char buffer[256];
assert(strlen(name) < sizeof(buffer) - 2); /* one for '_', one for '\0' */
buffer[0] = '_';
strcpy(buffer+1, name);
for(nh = name_hash_table[name_hash(buffer)]; nh; nh = nh->next)
{
if( (nh->flags & SYM_INVALID) != 0 )
{
continue;
}
if (!strcmp(nh->name, buffer)) break;
}
}
/*
* If we don't have anything here, then try and see if this
* is a local symbol to the current stack frame. No matter
* what, we have nothing more to do, so we let that function
* decide what we ultimately return.
*/
if (!nh)
{
return DEBUG_GetStackSymbolValue(name, value);
}
value->type = nh->value.type;
value->cookie = nh->value.cookie;
return DEBUG_GetLineNumberAddr( nh, lineno, &value->addr, bp_flag );
}
/***********************************************************************
* DEBUG_GetLineNumberAddr
*
* Get the address of a named symbol.
*/
BOOL DEBUG_GetLineNumberAddr( const struct name_hash * nh, const int lineno,
DBG_ADDR *addr, int bp_flag )
{
int i;
if( lineno == -1 )
{
*addr = nh->value.addr;
if( bp_flag )
{
addr->off += nh->breakpoint_offset;
}
}
else
{
/*
* Search for the specific line number. If we don't find it,
* then return FALSE.
*/
if( nh->linetab == NULL )
{
return FALSE;
}
for(i=0; i < nh->n_lines; i++ )
{
if( nh->linetab[i].line_number == lineno )
{
*addr = nh->linetab[i].pc_offset;
return TRUE;
}
}
/*
* This specific line number not found.
*/
return FALSE;
}
return TRUE;
}
/***********************************************************************
* DEBUG_SetSymbolValue
*
* Set the address of a named symbol.
*/
BOOL DEBUG_SetSymbolValue( const char * name, const DBG_VALUE *value )
{
char buffer[256];
struct name_hash *nh;
assert(value->cookie == DV_TARGET || value->cookie == DV_HOST);
for(nh = name_hash_table[name_hash(name)]; nh; nh = nh->next)
if (!strcmp(nh->name, name)) break;
if (!nh && (name[0] != '_'))
{
buffer[0] = '_';
strcpy(buffer+1, name);
for(nh = name_hash_table[name_hash(buffer)]; nh; nh = nh->next)
if (!strcmp(nh->name, buffer)) break;
}
if (!nh) return FALSE;
nh->value = *value;
nh->flags &= ~SYM_INVALID;
#ifdef __i386__
DEBUG_FixAddress( &nh->value.addr, DEBUG_context.SegDs );
#endif
return TRUE;
}
/***********************************************************************
* DEBUG_FindNearestSymbol
*
* Find the symbol nearest to a given address.
* If ebp is specified as non-zero, it means we should dump the argument
* list into the string we return as well.
*/
const char * DEBUG_FindNearestSymbol( const DBG_ADDR *addr, int flag,
struct name_hash ** rtn,
unsigned int ebp,
struct list_id * source)
{
static char name_buffer[MAX_PATH + 256];
static char arglist[1024];
static char argtmp[256];
struct name_hash * nearest = NULL;
int mid, high, low;
unsigned int * ptr;
int lineno;
char * lineinfo, *sourcefile;
int i;
char linebuff[16];
unsigned val;
if( rtn != NULL )
{
*rtn = NULL;
}
if( source != NULL )
{
source->sourcefile = NULL;
source->line = -1;
}
if( sortlist_valid == FALSE )
{
DEBUG_ResortSymbols();
}
if( sortlist_valid == FALSE )
{
return NULL;
}
/*
* FIXME - use the binary search that we added to
* the function DEBUG_CheckLinenoStatus. Better yet, we should
* probably keep some notion of the current function so we don't
* have to search every time.
*/
/*
* Binary search to find closest symbol.
*/
low = 0;
high = sorttab_nsym;
if( addr_sorttab[0]->value.addr.seg > addr->seg
|| ( addr_sorttab[0]->value.addr.seg == addr->seg
&& addr_sorttab[0]->value.addr.off > addr->off) )
{
nearest = NULL;
}
else if( addr_sorttab[high - 1]->value.addr.seg < addr->seg
|| ( addr_sorttab[high - 1]->value.addr.seg == addr->seg
&& addr_sorttab[high - 1]->value.addr.off < addr->off) )
{
nearest = addr_sorttab[high - 1];
}
else
{
while(1==1)
{
mid = (high + low)/2;
if( mid == low )
{
/*
* See if there are any other entries that might also
* have the same address, and would also have a line
* number table.
*/
if( mid > 0 && addr_sorttab[mid]->linetab == NULL )
{
if( (addr_sorttab[mid - 1]->value.addr.seg ==
addr_sorttab[mid]->value.addr.seg)
&& (addr_sorttab[mid - 1]->value.addr.off ==
addr_sorttab[mid]->value.addr.off)
&& (addr_sorttab[mid - 1]->linetab != NULL) )
{
mid--;
}
}
if( (mid < sorttab_nsym - 1)
&& (addr_sorttab[mid]->linetab == NULL) )
{
if( (addr_sorttab[mid + 1]->value.addr.seg ==
addr_sorttab[mid]->value.addr.seg)
&& (addr_sorttab[mid + 1]->value.addr.off ==
addr_sorttab[mid]->value.addr.off)
&& (addr_sorttab[mid + 1]->linetab != NULL) )
{
mid++;
}
}
nearest = addr_sorttab[mid];
#if 0
DEBUG_Printf(DBG_CHN_MESG, "Found %x:%x when looking for %x:%x %x %s\n",
addr_sorttab[mid ]->value.addr.seg,
addr_sorttab[mid ]->value.addr.off,
addr->seg, addr->off,
addr_sorttab[mid ]->linetab,
addr_sorttab[mid ]->name);
#endif
break;
}
if( (addr_sorttab[mid]->value.addr.seg < addr->seg)
|| ( addr_sorttab[mid]->value.addr.seg == addr->seg
&& addr_sorttab[mid]->value.addr.off <= addr->off) )
{
low = mid;
}
else
{
high = mid;
}
}
}
if (!nearest) return NULL;
if( rtn != NULL )
{
*rtn = nearest;
}
/*
* Fill in the relevant bits to the structure so that we can
* locate the source and line for this bit of code.
*/
if( source != NULL )
{
source->sourcefile = nearest->sourcefile;
if( nearest->linetab == NULL )
{
source->line = -1;
}
else
{
source->line = nearest->linetab[0].line_number;
}
}
lineinfo = "";
lineno = -1;
/*
* Prepare to display the argument list. If ebp is specified, it is
* the framepointer for the function in question. If not specified,
* we don't want the arglist.
*/
memset(arglist, '\0', sizeof(arglist));
if( ebp != 0 )
{
for(i=0; i < nearest->n_locals; i++ )
{
/*
* If this is a register (offset == 0) or a local
* variable, we don't want to know about it.
*/
if( nearest->local_vars[i].offset <= 0 )
{
continue;
}
ptr = (unsigned int *) (ebp + nearest->local_vars[i].offset);
if( arglist[0] == '\0' )
{
arglist[0] = '(';
}
else
{
strcat(arglist, ", ");
}
DEBUG_READ_MEM_VERBOSE(ptr, &val, sizeof(val));
sprintf(argtmp, "%s=0x%x", nearest->local_vars[i].name, val);
strcat(arglist, argtmp);
}
if( arglist[0] == '(' )
{
strcat(arglist, ")");
}
}
if( (nearest->sourcefile != NULL) && (flag == TRUE)
&& (addr->off - nearest->value.addr.off < 0x100000) )
{
/*
* Try and find the nearest line number to the current offset.
*/
if( nearest->linetab != NULL )
{
low = 0;
high = nearest->n_lines;
while ((high - low) > 1)
{
mid = (high + low) / 2;
if (addr->off < nearest->linetab[mid].pc_offset.off)
high = mid;
else
low = mid;
}
lineno = nearest->linetab[low].line_number;
}
if( lineno != -1 )
{
sprintf(linebuff, ":%d", lineno);
lineinfo = linebuff;
if( source != NULL )
{
source->line = lineno;
}
}
/* Remove the path from the file name */
sourcefile = strrchr( nearest->sourcefile, '/' );
if (!sourcefile) sourcefile = nearest->sourcefile;
else sourcefile++;
if (addr->off == nearest->value.addr.off)
sprintf( name_buffer, "%s%s [%s%s]", nearest->name,
arglist, sourcefile, lineinfo);
else
sprintf( name_buffer, "%s+0x%lx%s [%s%s]", nearest->name,
addr->off - nearest->value.addr.off,
arglist, sourcefile, lineinfo );
}
else
{
if (addr->off == nearest->value.addr.off)
sprintf( name_buffer, "%s%s", nearest->name, arglist);
else {
if (addr->seg && (nearest->value.addr.seg!=addr->seg))
return NULL;
else
sprintf( name_buffer, "%s+0x%lx%s", nearest->name,
addr->off - nearest->value.addr.off, arglist);
}
}
return name_buffer;
}
/***********************************************************************
* DEBUG_ReadSymbolTable
*
* Read a symbol file into the hash table.
*/
void DEBUG_ReadSymbolTable( const char * filename )
{
FILE * symbolfile;
DBG_VALUE value;
char type;
char * cpnt;
char buffer[256];
char name[256];
if (!(symbolfile = fopen(filename, "r")))
{
DEBUG_Printf( DBG_CHN_WARN, "Unable to open symbol table %s\n", filename );
return;
}
DEBUG_Printf( DBG_CHN_MESG, "Reading symbols from file %s\n", filename );
value.type = NULL;
value.addr.seg = 0;
value.addr.off = 0;
value.cookie = DV_TARGET;
while (1)
{
fgets( buffer, sizeof(buffer), symbolfile );
if (feof(symbolfile)) break;
/* Strip any text after a # sign (i.e. comments) */
cpnt = buffer;
while (*cpnt)
if(*cpnt++ == '#') { *cpnt = 0; break; }
/* Quietly ignore any lines that have just whitespace */
cpnt = buffer;
while(*cpnt)
{
if(*cpnt != ' ' && *cpnt != '\t') break;
cpnt++;
}
if (!(*cpnt) || *cpnt == '\n') continue;
if (sscanf(buffer, "%lx %c %s", &value.addr.off, &type, name) == 3)
DEBUG_AddSymbol( name, &value, NULL, SYM_WINE );
}
fclose(symbolfile);
}
void
DEBUG_AddLineNumber( struct name_hash * func, int line_num,
unsigned long offset )
{
if( func == NULL )
{
return;
}
if( func->n_lines + 1 >= func->lines_alloc )
{
func->lines_alloc += 64;
func->linetab = DBG_realloc(func->linetab,
func->lines_alloc * sizeof(WineLineNo));
}
func->linetab[func->n_lines].line_number = line_num;
func->linetab[func->n_lines].pc_offset.seg = func->value.addr.seg;
func->linetab[func->n_lines].pc_offset.off = func->value.addr.off + offset;
func->n_lines++;
}
struct wine_locals *
DEBUG_AddLocal( struct name_hash * func, int regno,
int offset,
int pc_start,
int pc_end,
char * name)
{
if( func == NULL )
{
return NULL;
}
if( func->n_locals + 1 >= func->locals_alloc )
{
func->locals_alloc += 32;
func->local_vars = DBG_realloc(func->local_vars,
func->locals_alloc * sizeof(WineLocals));
}
func->local_vars[func->n_locals].regno = regno;
func->local_vars[func->n_locals].offset = offset;
func->local_vars[func->n_locals].pc_start = pc_start;
func->local_vars[func->n_locals].pc_end = pc_end;
func->local_vars[func->n_locals].name = DBG_strdup(name);
func->local_vars[func->n_locals].type = NULL;
func->n_locals++;
return &func->local_vars[func->n_locals - 1];
}
void
DEBUG_DumpHashInfo(void)
{
int i;
int depth;
struct name_hash *nh;
/*
* Utility function to dump stats about the hash table.
*/
for(i=0; i<NR_NAME_HASH; i++)
{
depth = 0;
for (nh = name_hash_table[i]; nh; nh = nh->next)
{
depth++;
}
DEBUG_Printf(DBG_CHN_MESG, "Bucket %d: %d\n", i, depth);
}
}
/***********************************************************************
* DEBUG_CheckLinenoStatus
*
* Find the symbol nearest to a given address.
* If ebp is specified as non-zero, it means we should dump the argument
* list into the string we return as well.
*/
int DEBUG_CheckLinenoStatus( const DBG_ADDR *addr)
{
struct name_hash * nearest = NULL;
int mid, high, low;
if( sortlist_valid == FALSE )
{
DEBUG_ResortSymbols();
}
/*
* Binary search to find closest symbol.
*/
low = 0;
high = sorttab_nsym;
if( addr_sorttab[0]->value.addr.seg > addr->seg
|| ( addr_sorttab[0]->value.addr.seg == addr->seg
&& addr_sorttab[0]->value.addr.off > addr->off) )
{
nearest = NULL;
}
else if( addr_sorttab[high - 1]->value.addr.seg < addr->seg
|| ( addr_sorttab[high - 1]->value.addr.seg == addr->seg
&& addr_sorttab[high - 1]->value.addr.off < addr->off) )
{
nearest = addr_sorttab[high - 1];
}
else
{
while(1==1)
{
mid = (high + low)/2;
if( mid == low )
{
/*
* See if there are any other entries that might also
* have the same address, and would also have a line
* number table.
*/
if( mid > 0 && addr_sorttab[mid]->linetab == NULL )
{
if( (addr_sorttab[mid - 1]->value.addr.seg ==
addr_sorttab[mid]->value.addr.seg)
&& (addr_sorttab[mid - 1]->value.addr.off ==
addr_sorttab[mid]->value.addr.off)
&& (addr_sorttab[mid - 1]->linetab != NULL) )
{
mid--;
}
}
if( (mid < sorttab_nsym - 1)
&& (addr_sorttab[mid]->linetab == NULL) )
{
if( (addr_sorttab[mid + 1]->value.addr.seg ==
addr_sorttab[mid]->value.addr.seg)
&& (addr_sorttab[mid + 1]->value.addr.off ==
addr_sorttab[mid]->value.addr.off)
&& (addr_sorttab[mid + 1]->linetab != NULL) )
{
mid++;
}
}
nearest = addr_sorttab[mid];
#if 0
DEBUG_Printf(DBG_CHN_MESG, "Found %x:%x when looking for %x:%x %x %s\n",
addr_sorttab[mid ]->value.addr.seg,
addr_sorttab[mid ]->value.addr.off,
addr->seg, addr->off,
addr_sorttab[mid ]->linetab,
addr_sorttab[mid ]->name);
#endif
break;
}
if( (addr_sorttab[mid]->value.addr.seg < addr->seg)
|| ( addr_sorttab[mid]->value.addr.seg == addr->seg
&& addr_sorttab[mid]->value.addr.off <= addr->off) )
{
low = mid;
}
else
{
high = mid;
}
}
}
if (!nearest) return FUNC_HAS_NO_LINES;
if( nearest->flags & SYM_STEP_THROUGH )
{
/*
* This will cause us to keep single stepping until
* we get to the other side somewhere.
*/
return NOT_ON_LINENUMBER;
}
if( (nearest->flags & SYM_TRAMPOLINE) )
{
/*
* This will cause us to keep single stepping until
* we get to the other side somewhere.
*/
return FUNC_IS_TRAMPOLINE;
}
if( nearest->linetab == NULL )
{
return FUNC_HAS_NO_LINES;
}
/*
* We never want to stop on the first instruction of a function
* even if it has it's own linenumber. Let the thing keep running
* until it gets past the function prologue. We only do this if there
* is more than one line number for the function, of course.
*/
if( nearest->value.addr.off == addr->off && nearest->n_lines > 1 )
{
return NOT_ON_LINENUMBER;
}
if( (nearest->sourcefile != NULL)
&& (addr->off - nearest->value.addr.off < 0x100000) )
{
low = 0;
high = nearest->n_lines;
while ((high - low) > 1)
{
mid = (high + low) / 2;
if (addr->off < nearest->linetab[mid].pc_offset.off) high = mid;
else low = mid;
}
if (addr->off == nearest->linetab[low].pc_offset.off)
return AT_LINENUMBER;
else
return NOT_ON_LINENUMBER;
}
return FUNC_HAS_NO_LINES;
}
/***********************************************************************
* DEBUG_GetFuncInfo
*
* Find the symbol nearest to a given address.
* Returns sourcefile name and line number in a format that the listing
* handler can deal with.
*/
void
DEBUG_GetFuncInfo( struct list_id * ret, const char * filename,
const char * name)
{
char buffer[256];
char * pnt;
struct name_hash *nh;
for(nh = name_hash_table[name_hash(name)]; nh; nh = nh->next)
{
if( filename != NULL )
{
if( nh->sourcefile == NULL )
{
continue;
}
pnt = strrchr(nh->sourcefile, '/');
if( strcmp(nh->sourcefile, filename) != 0
&& (pnt == NULL || strcmp(pnt + 1, filename) != 0) )
{
continue;
}
}
if (!strcmp(nh->name, name)) break;
}
if (!nh && (name[0] != '_'))
{
buffer[0] = '_';
strcpy(buffer+1, name);
for(nh = name_hash_table[name_hash(buffer)]; nh; nh = nh->next)
{
if( filename != NULL )
{
if( nh->sourcefile == NULL )
{
continue;
}
pnt = strrchr(nh->sourcefile, '/');
if( strcmp(nh->sourcefile, filename) != 0
&& (pnt == NULL || strcmp(pnt + 1, filename) != 0) )
{
continue;
}
}
if (!strcmp(nh->name, buffer)) break;
}
}
if( !nh )
{
if( filename != NULL )
{
DEBUG_Printf(DBG_CHN_MESG, "No such function %s in %s\n", name, filename);
}
else
{
DEBUG_Printf(DBG_CHN_MESG, "No such function %s\n", name);
}
ret->sourcefile = NULL;
ret->line = -1;
return;
}
ret->sourcefile = nh->sourcefile;
/*
* Search for the specific line number. If we don't find it,
* then return FALSE.
*/
if( nh->linetab == NULL )
{
ret->line = -1;
}
else
{
ret->line = nh->linetab[0].line_number;
}
}
/***********************************************************************
* DEBUG_GetStackSymbolValue
*
* Get the address of a named symbol from the current stack frame.
*/
static
BOOL DEBUG_GetStackSymbolValue( const char * name, DBG_VALUE *value )
{
struct name_hash * curr_func;
unsigned int ebp;
unsigned int eip;
int i;
if( DEBUG_GetCurrentFrame(&curr_func, &eip, &ebp) == FALSE )
{
return FALSE;
}
for(i=0; i < curr_func->n_locals; i++ )
{
/*
* Test the range of validity of the local variable. This
* comes up with RBRAC/LBRAC stabs in particular.
*/
if( (curr_func->local_vars[i].pc_start != 0)
&& ((eip - curr_func->value.addr.off)
< curr_func->local_vars[i].pc_start) )
{
continue;
}
if( (curr_func->local_vars[i].pc_end != 0)
&& ((eip - curr_func->value.addr.off)
> curr_func->local_vars[i].pc_end) )
{
continue;
}
if( strcmp(name, curr_func->local_vars[i].name) == 0 )
{
/*
* OK, we found it. Now figure out what to do with this.
*/
if( curr_func->local_vars[i].regno != 0 )
{
/*
* Register variable. Point to DEBUG_context field.
*/
assert(curr_func->local_vars[i].regno - 1 < sizeof(reg_ofs)/sizeof(reg_ofs[0]));
value->addr.off = ((DWORD)&DEBUG_context) +
reg_ofs[curr_func->local_vars[i].regno - 1];
value->cookie = DV_HOST;
}
else
{
value->addr.off = ebp + curr_func->local_vars[i].offset;
value->cookie = DV_TARGET;
}
value->addr.seg = 0;
value->type = curr_func->local_vars[i].type;
return TRUE;
}
}
return FALSE;
}
int
DEBUG_InfoLocals(void)
{
struct name_hash * curr_func;
unsigned int ebp;
unsigned int eip;
int i;
unsigned int * ptr;
unsigned int val;
if( DEBUG_GetCurrentFrame(&curr_func, &eip, &ebp) == FALSE )
{
return FALSE;
}
for(i=0; i < curr_func->n_locals; i++ )
{
/*
* Test the range of validity of the local variable. This
* comes up with RBRAC/LBRAC stabs in particular.
*/
if( (curr_func->local_vars[i].pc_start != 0)
&& ((eip - curr_func->value.addr.off)
< curr_func->local_vars[i].pc_start) )
{
continue;
}
if( (curr_func->local_vars[i].pc_end != 0)
&& ((eip - curr_func->value.addr.off)
> curr_func->local_vars[i].pc_end) )
{
continue;
}
if( curr_func->local_vars[i].regno != 0 )
{
ptr = (unsigned int *)(((DWORD)&DEBUG_context)
+ reg_ofs[curr_func->local_vars[i].regno - 1]);
DEBUG_Printf(DBG_CHN_MESG, "%s:%s (optimized into register $%s) == 0x%8.8x\n",
curr_func->name, curr_func->local_vars[i].name,
reg_name[curr_func->local_vars[i].regno - 1],
*ptr);
}
else
{
DEBUG_READ_MEM_VERBOSE((void*)(ebp + curr_func->local_vars[i].offset),
&val, sizeof(val));
DEBUG_Printf(DBG_CHN_MESG, "%s:%s == 0x%8.8x\n",
curr_func->name, curr_func->local_vars[i].name, val);
}
}
return TRUE;
}
int
DEBUG_SetSymbolSize(struct name_hash * sym, unsigned int len)
{
sym->symbol_size = len;
return TRUE;
}
int
DEBUG_SetSymbolBPOff(struct name_hash * sym, unsigned int off)
{
sym->breakpoint_offset = off;
return TRUE;
}
int
DEBUG_GetSymbolAddr(struct name_hash * sym, DBG_ADDR * addr)
{
*addr = sym->value.addr;
return TRUE;
}
int DEBUG_SetLocalSymbolType(struct wine_locals * sym, struct datatype * type)
{
sym->type = type;
return TRUE;
}
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