bslathi19/cc65
1
0
Fork 0
Code Issues Pull Requests Actions 1 Packages Projects Releases Wiki Activity

Started to add support for segments.

Browse Source 
git-svn-id: svn://svn.cc65.org/cc65/trunk@3805 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cuz
2007-08-31 20:27:53 +00:00
parent 10efd998e0
commit 8db6dcd414
8 changed files with 480 additions and 183 deletions
Download Patch File Download Diff File Expand all files Collapse all files

109
src/da65/segment.c Normal file
View File

@@ -0,0 +1,109 @@
/*****************************************************************************/
/* */
/* segment.c */
/* */
/* Segment handling for da65 */
/* */
/* */
/* */
/* (C) 2007 Ullrich von Bassewitz */
/* Roemerstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
/* */
/* */
/* 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>
/* common */
#include "addrsize.h"
#include "xmalloc.h"
/* da65 */
#include "attrtab.h"
#include "segment.h"
/*****************************************************************************/
/* Data */
/*****************************************************************************/
/* Hash definitions */
#define HASH_SIZE 64 /* Must be power of two */
#define HASH_MASK (HASH_SIZE-1)
/* Segment definition */
typedef struct Segment Segment;
struct Segment {
Segment* NextStart; /* Pointer to next segment */
Segment* NextEnd; /* Pointer to next segment */
unsigned long Start;
unsigned long End;
unsigned AddrSize;
char Name[1]; /* Name, dynamically allocated */
};
/* Tables containing the segments. A segment is inserted using it's hash
* value. Collision is done by single linked lists.
*/
static Segment* StartTab[HASH_SIZE]; /* Table containing segment starts */
static Segment* EndTab[HASH_SIZE]; /* Table containing segment ends */
/*****************************************************************************/
/* Code */
/*****************************************************************************/
void AddAbsSegment (unsigned Start, unsigned End, const char* Name)
/* Add an absolute segment to the segment table */
{
/* Get the length of the name */
unsigned Len = strlen (Name);
/* Create a new segment */
Segment* S = xmalloc (sizeof (Segment) + Len);
/* Fill in the data */
S->Start = Start;
S->End = End;
S->AddrSize = ADDR_SIZE_ABS;
memcpy (S->Name, Name, Len + 1);
/* Insert the segment into the hash tables */
S->NextStart = StartTab[Start & HASH_MASK];
StartTab[Start & HASH_MASK] = S;
S->NextEnd = EndTab[End & HASH_MASK];
EndTab[End & HASH_MASK] = S;
/* Mark the addresses within the segment */
MarkRange (Start, End, atSegment);
}