mirror of https://github.com/cc65/cc65.git
312 lines
9.4 KiB
C
312 lines
9.4 KiB
C
/*****************************************************************************/
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/* */
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/* objdata.c */
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/* */
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/* Handling object file data for the ld65 linker */
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/* */
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/* */
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/* */
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/* (C) 1998-2011, Ullrich von Bassewitz */
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/* Roemerstrasse 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 "check.h"
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#include "xmalloc.h"
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/* ld65 */
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#include "error.h"
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#include "exports.h"
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#include "fileinfo.h"
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#include "library.h"
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#include "objdata.h"
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#include "spool.h"
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/*****************************************************************************/
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/* Data */
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/*****************************************************************************/
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/* Collection containing used ObjData objects */
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Collection ObjDataList = STATIC_COLLECTION_INITIALIZER;
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/*****************************************************************************/
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/* Code */
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/*****************************************************************************/
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ObjData* NewObjData (void)
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/* Allocate a new structure on the heap, insert it into the list, return it */
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{
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/* Allocate memory */
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ObjData* O = xmalloc (sizeof (ObjData));
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/* Initialize the data */
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O->Next = 0;
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O->Name = INVALID_STRING_ID;
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O->Lib = 0;
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O->MTime = 0;
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O->Start = 0;
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O->Flags = 0;
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O->HLLSymBaseId = 0;
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O->SymBaseId = 0;
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O->ScopeBaseId = 0;
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O->SpanBaseId = 0;
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O->Files = EmptyCollection;
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O->Sections = EmptyCollection;
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O->Exports = EmptyCollection;
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O->Imports = EmptyCollection;
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O->DbgSyms = EmptyCollection;
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O->HLLDbgSyms = EmptyCollection;
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O->LineInfos = EmptyCollection;
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O->StringCount = 0;
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O->Strings = 0;
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O->Assertions = EmptyCollection;
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O->Scopes = EmptyCollection;
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O->Spans = EmptyCollection;
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/* Return the new entry */
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return O;
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}
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void FreeObjData (ObjData* O)
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/* Free an ObjData object. NOTE: This function works only for unused object
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** data, that is, ObjData objects that aren't used because they aren't
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** referenced.
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*/
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{
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unsigned I;
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for (I = 0; I < CollCount (&O->Files); ++I) {
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CollDeleteItem (&((FileInfo*) CollAtUnchecked (&O->Files, I))->Modules, O);
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}
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DoneCollection (&O->Files);
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DoneCollection (&O->Sections);
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for (I = 0; I < CollCount (&O->Exports); ++I) {
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FreeExport (CollAtUnchecked (&O->Exports, I));
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}
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DoneCollection (&O->Exports);
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for (I = 0; I < CollCount (&O->Imports); ++I) {
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FreeImport (CollAtUnchecked (&O->Imports, I));
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}
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DoneCollection (&O->Imports);
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DoneCollection (&O->DbgSyms);
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DoneCollection (&O->HLLDbgSyms);
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for (I = 0; I < CollCount (&O->LineInfos); ++I) {
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FreeLineInfo (CollAtUnchecked (&O->LineInfos, I));
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}
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DoneCollection (&O->LineInfos);
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xfree (O->Strings);
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DoneCollection (&O->Assertions);
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DoneCollection (&O->Scopes);
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for (I = 0; I < CollCount (&O->Spans); ++I) {
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FreeSpan (CollAtUnchecked (&O->Spans, I));
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}
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DoneCollection (&O->Spans);
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xfree (O);
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}
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void FreeObjStrings (ObjData* O)
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/* Free the module string data. Used once the object file is loaded completely
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** when all strings are converted to global strings.
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*/
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{
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xfree (O->Strings);
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O->Strings = 0;
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}
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void InsertObjData (ObjData* O)
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/* Insert the ObjData object into the collection of used ObjData objects. */
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{
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CollAppend (&ObjDataList, O);
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}
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void InsertObjGlobals (ObjData* O)
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/* Insert imports and exports from the object file into the global import and
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** export lists.
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*/
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{
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unsigned I;
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/* Insert exports and imports */
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for (I = 0; I < CollCount (&O->Exports); ++I) {
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InsertExport (CollAt (&O->Exports, I));
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}
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for (I = 0; I < CollCount (&O->Imports); ++I) {
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InsertImport (CollAt (&O->Imports, I));
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}
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}
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unsigned MakeGlobalStringId (const ObjData* O, unsigned Index)
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/* Convert a local string id into a global one and return it. */
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{
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if (Index >= O->StringCount) {
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Error ("Invalid string index (%u) in module '%s'",
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Index, GetObjFileName (O));
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}
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return O->Strings[Index];
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}
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const char* GetObjFileName (const ObjData* O)
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/* Get the name of the object file. Return "[linker generated]" if the object
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** file is NULL.
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*/
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{
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return O? GetString (O->Name) : "[linker generated]";
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}
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const struct StrBuf* GetObjString (const ObjData* Obj, unsigned Id)
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/* Get a string from an object file checking for an invalid index */
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{
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return GetStrBuf (MakeGlobalStringId (Obj, Id));
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}
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struct Section* GetObjSection (const ObjData* O, unsigned Id)
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/* Get a section from an object file checking for a valid index */
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{
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if (Id >= CollCount (&O->Sections)) {
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Error ("Invalid section index (%u) in module '%s'",
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Id, GetObjFileName (O));
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}
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return CollAtUnchecked (&O->Sections, Id);
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}
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struct Import* GetObjImport (const ObjData* O, unsigned Id)
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/* Get an import from an object file checking for a valid index */
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{
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if (Id >= CollCount (&O->Imports)) {
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Error ("Invalid import index (%u) in module '%s'",
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Id, GetObjFileName (O));
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}
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return CollAtUnchecked (&O->Imports, Id);
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}
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struct Export* GetObjExport (const ObjData* O, unsigned Id)
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/* Get an export from an object file checking for a valid index */
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{
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if (Id >= CollCount (&O->Exports)) {
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Error ("Invalid export index (%u) in module '%s'",
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Id, GetObjFileName (O));
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}
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return CollAtUnchecked (&O->Exports, Id);
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}
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struct DbgSym* GetObjDbgSym (const ObjData* O, unsigned Id)
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/* Get a debug symbol from an object file checking for a valid index */
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{
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if (Id >= CollCount (&O->DbgSyms)) {
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Error ("Invalid debug symbol index (%u) in module '%s'",
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Id, GetObjFileName (O));
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}
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return CollAtUnchecked (&O->DbgSyms, Id);
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}
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struct Scope* GetObjScope (const ObjData* O, unsigned Id)
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/* Get a scope from an object file checking for a valid index */
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{
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if (Id >= CollCount (&O->Scopes)) {
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Error ("Invalid scope index (%u) in module '%s'",
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Id, GetObjFileName (O));
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}
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return CollAtUnchecked (&O->Scopes, Id);
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}
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unsigned ObjDataCount (void)
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/* Return the total number of modules */
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{
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return CollCount (&ObjDataList);
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}
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void PrintDbgModules (FILE* F)
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/* Output the modules to a debug info file */
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{
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unsigned I;
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/* Output modules */
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for (I = 0; I < CollCount (&ObjDataList); ++I) {
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/* Get this object file */
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const ObjData* O = CollConstAt (&ObjDataList, I);
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/* The main source file is the one at index zero */
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const FileInfo* Source = CollConstAt (&O->Files, 0);
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/* Output the module line */
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fprintf (F,
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"mod\tid=%u,name=\"%s\",file=%u",
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I,
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GetObjFileName (O),
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Source->Id);
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/* Add library if any */
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if (O->Lib != 0) {
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fprintf (F, ",lib=%u", GetLibId (O->Lib));
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}
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/* Terminate the output line */
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fputc ('\n', F);
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}
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}
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