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77 lines
3.7 KiB
C
77 lines
3.7 KiB
C
/*****************************************************************************/
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/* */
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/* ulabel.h */
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/* */
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/* Unnamed labels for the ca65 macroassembler */
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/* */
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/* */
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/* */
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/* (C) 2000-2011, 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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#ifndef ULABEL_H
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#define ULABEL_H
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/*****************************************************************************/
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/* Code */
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/*****************************************************************************/
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ExprNode* ULabRef (int Which);
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/* Get an unnamed label. If Which is negative, it is a backreference (a
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** reference to an already defined label), and the function will return a
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** segment relative expression. If Which is positive, it is a forward ref,
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** and the function will return a expression node for an unnamed label that
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** must be resolved later.
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*/
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void ULabDef (void);
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/* Define an unnamed label at the current PC */
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int ULabCanResolve (void);
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/* Return true if we can resolve arbitrary ULabels. */
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ExprNode* ULabResolve (unsigned Index);
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/* Return a valid expression for the unnamed label with the given index. This
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** is used to resolve unnamed labels when assembly is done, so it is an error
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** if a label is still undefined in this phase.
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*/
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void ULabDone (void);
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/* Run through all unnamed labels, check for anomalies and errors and do
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** necessary cleanups.
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*/
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/* End of ulabel.h */
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#endif
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