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795d9e1a1c
(previously only the scope itself had that size). Pass the size of symbols through the object file to the linker. Bump the object file version and adjust object file reading tools (od65, ar65) to this change. Read the size in the linker and output it in the debug info. Bump the minor version number of the debug info. Read the size and allow to access it via the API. Do better version checking for the debug info and try to be smarter when encountering unknown keywords to improve support for newer minor versions. git-svn-id: svn://svn.cc65.org/cc65/trunk@5057 b7a2c559-68d2-44c3-8de9-860c34a00d81
136 lines
5.1 KiB
C
136 lines
5.1 KiB
C
/*****************************************************************************/
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/* */
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/* sizeof.c */
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/* */
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/* Handle sizes of types and data */
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/* */
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/* */
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/* */
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/* (C) 2003-2011, Ullrich von Bassewit */
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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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/* common */
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#include "addrsize.h"
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/* ca65 */
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#include "expr.h"
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#include "sizeof.h"
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#include "symtab.h"
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/*****************************************************************************/
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/* Data */
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/*****************************************************************************/
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/* The name of the symbol used to encode the size. The name of this entry is
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* choosen so that it cannot be accessed by the user.
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*/
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static const StrBuf SizeEntryName = LIT_STRBUF_INITIALIZER (".size");
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/*****************************************************************************/
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/* Code */
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/*****************************************************************************/
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int IsSizeOfSymbol (const SymEntry* Sym)
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/* Return true if the given symbol is the one that encodes the size of some
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* entity. Sym may also be a NULL pointer in which case false is returned.
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*/
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{
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return (Sym != 0 && SB_Compare (GetSymName (Sym), &SizeEntryName) == 0);
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}
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SymEntry* FindSizeOfScope (SymTable* Scope)
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/* Get the size of a scope. The function returns the symbol table entry that
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* encodes the size or NULL if there is no such entry.
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*/
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{
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return SymFind (Scope, &SizeEntryName, SYM_FIND_EXISTING);
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}
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SymEntry* FindSizeOfSymbol (SymEntry* Sym)
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/* Get the size of a symbol table entry. The function returns the symbol table
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* entry that encodes the size of the symbol or NULL if there is no such entry.
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*/
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{
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return SymFindLocal (Sym, &SizeEntryName, SYM_FIND_EXISTING);
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}
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SymEntry* GetSizeOfScope (SymTable* Scope)
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/* Get the size of a scope. The function returns the symbol table entry that
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* encodes the size, and will create a new entry if it does not exist.
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*/
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{
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return SymFind (Scope, &SizeEntryName, SYM_ALLOC_NEW);
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}
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SymEntry* GetSizeOfSymbol (SymEntry* Sym)
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/* Get the size of a symbol table entry. The function returns the symbol table
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* entry that encodes the size of the symbol and will create a new one if it
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* does not exist.
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*/
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{
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return SymFindLocal (Sym, &SizeEntryName, SYM_ALLOC_NEW);
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}
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SymEntry* DefSizeOfScope (SymTable* Scope, long Size)
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/* Define the size of a scope and return the size symbol */
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{
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SymEntry* SizeSym = GetSizeOfScope (Scope);
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SymDef (SizeSym, GenLiteralExpr (Size), ADDR_SIZE_DEFAULT, SF_NONE);
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return SizeSym;
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}
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SymEntry* DefSizeOfSymbol (SymEntry* Sym, long Size)
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/* Define the size of a symbol and return the size symbol */
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{
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SymEntry* SizeSym = GetSizeOfSymbol (Sym);
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SymDef (SizeSym, GenLiteralExpr (Size), ADDR_SIZE_DEFAULT, SF_NONE);
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return SizeSym;
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}
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