8f9a21ae3f
Use the address size for import, export and debug symbols (object code change). More changes to support the --memory-model switch and address sizes. git-svn-id: svn://svn.cc65.org/cc65/trunk@2691 b7a2c559-68d2-44c3-8de9-860c34a00d81
128 lines
4.6 KiB
C
128 lines
4.6 KiB
C
/*****************************************************************************/
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/* */
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/* mmodel.c */
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/* */
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/* Memory model definitions */
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/* */
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/* */
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/* */
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/* (C) 2003 Ullrich von Bassewitz */
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/* Römerstraße 52 */
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/* D-70794 Filderstadt */
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/* EMail: uz@cc65.org */
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/* */
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/* */
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/* This software is provided 'as-is', without any expressed or implied */
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/* warranty. In no event will the authors be held liable for any damages */
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/* arising from the use of this software. */
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/* */
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/* Permission is granted to anyone to use this software for any purpose, */
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/* including commercial applications, and to alter it and redistribute it */
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/* freely, subject to the following restrictions: */
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/* */
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/* 1. The origin of this software must not be misrepresented; you must not */
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/* claim that you wrote the original software. If you use this software */
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/* in a product, an acknowledgment in the product documentation would be */
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/* appreciated but is not required. */
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/* 2. Altered source versions must be plainly marked as such, and must not */
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/* be misrepresented as being the original software. */
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/* 3. This notice may not be removed or altered from any source */
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/* distribution. */
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/* */
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/*****************************************************************************/
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#include <string.h>
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/* common */
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#include "addrsize.h"
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#include "mmodel.h"
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/*****************************************************************************/
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/* Data */
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/*****************************************************************************/
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/* Memory model in use */
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mmodel_t MemoryModel = MMODEL_UNKNOWN;
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/* Table with memory model names */
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static const char* MemoryModelNames[MMODEL_COUNT] = {
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"near",
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"far",
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"huge",
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};
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/* Address sizes for the segments */
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unsigned char CodeAddrSize = ADDR_SIZE_ABS;
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unsigned char DataAddrSize = ADDR_SIZE_ABS;
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unsigned char ZpAddrSize = ADDR_SIZE_ZP;
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/*****************************************************************************/
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/* Code */
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/*****************************************************************************/
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mmodel_t FindMemoryModel (const char* Name)
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/* Find a memory model by name. Return MMODEL_UNKNOWN for an unknown name. */
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{
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unsigned I;
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/* Check all CPU names */
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for (I = 0; I < MMODEL_COUNT; ++I) {
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if (strcmp (MemoryModelNames[I], Name) == 0) {
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return (mmodel_t)I;
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}
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}
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/* Not found */
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return MMODEL_UNKNOWN;
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}
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void SetMemoryModel (mmodel_t Model)
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/* Set the memory model updating the MemoryModel variables and the address
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* sizes for the segments.
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*/
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{
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/* Remember the memory model */
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MemoryModel = Model;
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/* Set the address sizes for the segments */
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switch (MemoryModel) {
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case MMODEL_NEAR:
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/* Code: near, data: near */
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CodeAddrSize = ADDR_SIZE_ABS;
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DataAddrSize = ADDR_SIZE_ABS;
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break;
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case MMODEL_FAR:
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/* Code: far, data: near */
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CodeAddrSize = ADDR_SIZE_FAR;
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DataAddrSize = ADDR_SIZE_ABS;
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break;
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case MMODEL_HUGE:
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/* Code: far, data: far */
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CodeAddrSize = ADDR_SIZE_FAR;
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DataAddrSize = ADDR_SIZE_FAR;
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break;
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default:
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break;
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}
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/* Zeropage is always zeropage */
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ZpAddrSize = ADDR_SIZE_ZP;
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}
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