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8fb90af8ff
git-svn-id: svn://svn.cc65.org/cc65/trunk@2110 b7a2c559-68d2-44c3-8de9-860c34a00d81
175 lines
5.9 KiB
C
175 lines
5.9 KiB
C
/*****************************************************************************/
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/* */
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/* location.c */
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/* */
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/* Memory location description */
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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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/* common.h */
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#include "coll.h"
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#include "xmalloc.h"
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/* sim65 */
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#include "cfgdata.h"
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#include "error.h"
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#include "scanner.h"
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#include "location.h"
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/*****************************************************************************/
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/* Data */
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/*****************************************************************************/
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/* List of all memory locations */
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Collection Locations = STATIC_COLLECTION_INITIALIZER;
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/*****************************************************************************/
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/* Code */
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/*****************************************************************************/
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Location* NewLocation (unsigned long Start, unsigned long End)
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/* Create a new location, initialize and return it */
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{
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/* Allocate memory */
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Location* L = xmalloc (sizeof (Location));
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/* Initialize the fields */
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L->Start = Start;
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L->End = End;
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L->Attributes = EmptyCollection;
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L->Line = CfgErrorLine;
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L->Col = CfgErrorCol;
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/* Return the new struct */
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return L;
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}
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static int CmpLocations (void* Data attribute ((unused)),
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const void* lhs, const void* rhs)
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/* Compare function for CollSort */
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{
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/* Cast the object pointers */
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const Location* Left = (const Location*) rhs;
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const Location* Right = (const Location*) lhs;
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/* Do the compare */
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if (Left->Start < Right->Start) {
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return 1;
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} else if (Left->Start > Right->Start) {
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return -1;
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} else {
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return 0;
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}
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}
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int LocationGetAttr (const Location* L, const char* AttrName)
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/* Find the attribute with the given name and return it. Call Error() if the
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* attribute was not found.
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*/
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{
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int I = CfgDataFind (&L->Attributes, AttrName);
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if (I < 0) {
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Error ("%s(%u): Attribute `%s' missing", CfgGetName(), L->Line, AttrName);
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}
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return I;
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}
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int LocationIsMirror (const Location* L)
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/* Return true if the given location is a mirror of another one. */
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{
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/* Find the "mirror" attribute */
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return (CfgDataFind (&L->Attributes, "mirror") >= 0);
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}
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void LocationSort (Collection* Locations)
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/* Sort all locations by address */
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{
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/* Sort all memory locations */
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CollSort (Locations, CmpLocations, 0);
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}
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void LocationCheck (const Collection* Locations)
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/* Check all locations for problems */
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{
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unsigned I;
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/* Check for overlaps and other problems */
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const Location* Last = 0;
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for (I = 0; I < CollCount (Locations); ++I) {
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/* Get this location */
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const Location* L = CollConstAt (Locations, I);
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/* Check for an overlap with the following location */
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if (Last && Last->End >= L->Start) {
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Error ("%s(%u): Address range overlap (overlapping entry is in line %u)",
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CfgGetName(), L->Line, Last->Line);
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}
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/* If the location is a mirror, it must not have other attributes,
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* and the mirror attribute must be an integer.
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*/
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if (LocationIsMirror (L)) {
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const CfgData* D;
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if (CollCount (&L->Attributes) > 1) {
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Error ("%s(%u): Location at address $%06X is a mirror "
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"but has attributes", CfgGetName(), L->Line, L->Start);
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}
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D = CollConstAt (&L->Attributes, 0);
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CfgDataCheckType (D, CfgDataNumber);
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}
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/* Remember this entry */
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Last = L;
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}
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}
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