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Added a method to write variable sized unsigned values. Use this method for

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all sorts of things in the object files. This does not only make the object
files smaller, but does also remove several limits (strings may be longer
than 255 bytes, several counters no longer have 8 or 16 bit limits).


git-svn-id: svn://svn.cc65.org/cc65/trunk@260 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cuz
2000-08-02 13:23:06 +00:00
parent 85d8b3badf
commit 097a01094e
29 changed files with 423 additions and 295 deletions
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72
src/ar65/library.c
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@@ -6,10 +6,10 @@
/* */
/* */
/* */
/* (C) 1998 Ullrich von Bassewitz */
/* Wacholderweg 14 */
/* D-70597 Stuttgart */
/* EMail: uz@musoftware.de */
/* (C) 1998-2000 Ullrich von Bassewitz */
/* Wacholderweg 14 */
/* D-70597 Stuttgart */
/* EMail: uz@musoftware.de */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
@@ -37,13 +37,15 @@
#include <string.h>
#include <errno.h>
#include "../common/bitops.h"
#include "../common/exprdefs.h"
#include "../common/filepos.h"
#include "../common/libdefs.h"
#include "../common/symdefs.h"
#include "../common/xmalloc.h"
/* common */
#include "bitops.h"
#include "exprdefs.h"
#include "filepos.h"
#include "libdefs.h"
#include "symdefs.h"
#include "xmalloc.h"
/* ar65 */
#include "error.h"
#include "global.h"
#include "fileio.h"
@@ -303,6 +305,28 @@ void LibCopyFrom (unsigned long Pos, unsigned long Bytes, FILE* F)
static unsigned long GetVar (unsigned char** Buf)
/* Get a variable sized value from Buf */
{
unsigned char C;
unsigned long V = 0;
unsigned Shift = 0;
do {
/* Read one byte */
C = **Buf;
++(*Buf);
/* Add this char to the value */
V |= ((unsigned long)(C & 0x7F)) << Shift;
/* Next value */
Shift += 7;
} while (C & 0x80);
/* Return the result */
return V;
}
static void SkipExpr (unsigned char** Buf)
/* Skip an expression in Buf */
{
@@ -339,20 +363,26 @@ static void SkipExpr (unsigned char** Buf)
static void SkipFilePos (unsigned char** Buf)
/* Skip a file position in Buf */
{
(void) GetVar (Buf); /* Line */
(void) GetVar (Buf); /* Col */
(void) GetVar (Buf); /* Name */
}
static void LibCheckExports (ObjData* O)
/* Insert all exports from the given object file into the global list
* checking for duplicates.
*/
{
char Name [256];
/* Get a pointer to the buffer */
unsigned char* Exports = O->Exports;
/* First two bytes are export count */
unsigned Lo = *Exports++;
unsigned Hi = *Exports++;
unsigned Count = (Hi << 8) + Lo;
/* Get the export count */
unsigned Count = GetVar (&Exports);
/* Read the exports */
if (Verbose > 1) {
@@ -360,13 +390,12 @@ static void LibCheckExports (ObjData* O)
}
while (Count--) {
unsigned char Len;
/* Get the export tag */
unsigned char Tag = *Exports++;
/* Next thing is name of symbol */
Len = *Exports++;
unsigned Len = GetVar (&Exports);
char* Name = xmalloc (Len + 1);
memcpy (Name, Exports, Len);
Name [Len] = '\0';
Exports += Len;
@@ -381,13 +410,16 @@ static void LibCheckExports (ObjData* O)
}
/* Skip the position */
Exports += POS_SIZE;
SkipFilePos (&Exports);
/* Insert the name into the hash table */
if (Verbose > 1) {
printf (" %s\n", Name);
}
ExpInsert (Name, O->Index);
/* Free the name */
xfree (Name);
}
}