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Separate processing the linker config file into two phases: The config file is

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read when the -t or -C switch is encountered and parts of it are processed.
The remaining parts are processed when all object files and libraries have
been read. To make this work, the expression evaluation in cfgexpr has been
rewritten to generate true expression trees. This means that expressions in
the linker config may use exports from the object files. 

Separation of config file processing is the base for several enhancements, for
example forced imports by linker config.

This code needs more work and is only very, very, very roughly tested.


git-svn-id: svn://svn.cc65.org/cc65/trunk@4840 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
uz
2010-11-08 21:52:24 +00:00
parent 6c0a9c0438
commit da792b3fd0
21 changed files with 718 additions and 462 deletions
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100
src/ld65/memarea.h Normal file
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/*****************************************************************************/
/* */
/* memarea.h */
/* */
/* Memory area definition for the ld65 linker */
/* */
/* */
/* */
/* (C) 2010, 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. */
/* */
/*****************************************************************************/
#ifndef MEMAREA_H
#define MEMAREA_H
/* common */
#include "coll.h"
/*****************************************************************************/
/* Data */
/*****************************************************************************/
/* Forwards for structures */
struct ExprNode;
struct File;
/* Memory area entry */
typedef struct MemoryArea MemoryArea;
struct MemoryArea {
unsigned Name; /* Name index of the memory section */
unsigned Attr; /* Which values are valid? */
unsigned Flags; /* Set of bitmapped flags */
struct ExprNode* StartExpr; /* Expression for start address */
unsigned long Start; /* Start address */
struct ExprNode* SizeExpr; /* Expression for size */
unsigned long Size; /* Length of memory section */
unsigned long FillLevel; /* Actual fill level of segment */
unsigned char FillVal; /* Value used to fill rest of seg */
unsigned char Relocatable; /* Memory area is relocatable */
Collection SegList; /* List of segments for this area */
struct File* F; /* Output file for this area */
};
/* Memory flags */
#define MF_DEFINE 0x0001 /* Define start and size */
#define MF_FILL 0x0002 /* Fill segment */
#define MF_RO 0x0004 /* Read only memory area */
#define MF_OVERFLOW 0x0008 /* Memory area overflow */
#define MF_PLACED 0x0010 /* Memory area was placed */
/*****************************************************************************/
/* Code */
/*****************************************************************************/
MemoryArea* NewMemoryArea (unsigned Name);
/* Create a new memory area and insert it into the list */
/* End of memarea.h */
#endif