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git-svn-id: svn://svn.cc65.org/cc65/trunk@3 b7a2c559-68d2-44c3-8de9-860c34a00d81
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uz
2000-05-28 13:40:48 +00:00
parent 579491e8a4
commit 53dd513176
847 changed files with 91345 additions and 0 deletions
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149
src/ar65/exports.c Normal file
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/*****************************************************************************/
/* */
/* exports.c */
/* */
/* Duplicate export checking for the ar65 archiver */
/* */
/* */
/* */
/* (C) 1998 Ullrich von Bassewitz */
/* Wacholderweg 14 */
/* D-70597 Stuttgart */
/* EMail: uz@musoftware.de */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
/* warranty. In no event will the authors be held liable for any damages */
/* arising from the use of this software. */
/* */
/* Permission is granted to anyone to use this software for any purpose, */
/* including commercial applications, and to alter it and redistribute it */
/* freely, subject to the following restrictions: */
/* */
/* 1. The origin of this software must not be misrepresented; you must not */
/* claim that you wrote the original software. If you use this software */
/* in a product, an acknowledgment in the product documentation would be */
/* appreciated but is not required. */
/* 2. Altered source versions must be plainly marked as such, and must not */
/* be misrepresented as being the original software. */
/* 3. This notice may not be removed or altered from any source */
/* distribution. */
/* */
/*****************************************************************************/
#include <string.h>
#include "../common/hashstr.h"
#include "mem.h"
#include "error.h"
#include "objdata.h"
#include "exports.h"
/*****************************************************************************/
/* Data */
/*****************************************************************************/
/* A hash table entry */
typedef struct HashEntry_ HashEntry;
struct HashEntry_ {
HashEntry* Next; /* Next in list */
unsigned Module; /* Module index */
char Name [1]; /* Name of identifier */
};
/* Hash table */
#define HASHTAB_SIZE 4783
static HashEntry* HashTab [HASHTAB_SIZE];
/*****************************************************************************/
/* Code */
/*****************************************************************************/
static HashEntry* NewHashEntry (const char* Name, unsigned Module)
/* Create and return a new hash entry */
{
/* Get the length of the name */
unsigned Len = strlen (Name);
/* Get memory for the struct */
HashEntry* H = Xmalloc (sizeof (HashEntry) + Len);
/* Initialize the fields and return it */
H->Next = 0;
H->Module = Module;
memcpy (H->Name, Name, Len);
H->Name [Len] = '\0';
return H;
}
void ExpInsert (const char* Name, unsigned Module)
/* Insert an exported identifier and check if it's already in the list */
{
HashEntry* L;
/* Create a hash value for the given name */
unsigned HashVal = HashStr (Name) % HASHTAB_SIZE;
/* Create a new hash entry */
HashEntry* H = NewHashEntry (Name, Module);
/* Search through the list in that slot and print matching duplicates */
if (HashTab [HashVal] == 0) {
/* The slot is empty */
HashTab [HashVal] = H;
return;
}
L = HashTab [HashVal];
while (1) {
if (strcmp (L->Name, Name) == 0) {
/* Duplicate entry */
Warning ("External symbol `%s' in module `%s' is duplicated in "
"module `%s'",
Name, GetObjName (L->Module), GetObjName (Module));
}
if (L->Next == 0) {
break;
} else {
L = L->Next;
}
}
L->Next = H;
}
int ExpFind (const char* Name)
/* Check for an identifier in the list. Return -1 if not found, otherwise
* return the number of the module, that exports the identifer.
*/
{
/* Get a pointer to the list with the symbols hash value */
HashEntry* L = HashTab [HashStr (Name) % HASHTAB_SIZE];
while (L) {
/* Search through the list in that slot */
if (strcmp (L->Name, Name) == 0) {
/* Entry found */
return L->Module;
}
L = L->Next;
}
/* Not found */
return -1;
}