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/**
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* \file libyasm/objfmt.h
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* \brief YASM object format module interface.
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*
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* \license
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* Copyright (C) 2001-2007 Peter Johnson
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND OTHER CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR OTHER CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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* \endlicense
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*/
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#ifndef YASM_OBJFMT_H
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#define YASM_OBJFMT_H
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#ifndef YASM_DOXYGEN
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/** Base #yasm_objfmt structure. Must be present as the first element in any
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* #yasm_objfmt implementation.
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*/
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typedef struct yasm_objfmt_base {
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/** #yasm_objfmt_module implementation for this object format. */
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const struct yasm_objfmt_module *module;
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} yasm_objfmt_base;
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#endif
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/** Object format module interface. */
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struct yasm_objfmt_module {
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/** One-line description of the object format. */
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const char *name;
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/** Keyword used to select object format. */
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const char *keyword;
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/** Default output file extension (without the '.').
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* NULL means no extension, with no '.', while "" includes the '.'.
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*/
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/*@null@*/ const char *extension;
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/** Default (starting) x86 BITS setting. This only appies to the x86
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* architecture; other architectures ignore this setting.
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*/
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const unsigned char default_x86_mode_bits;
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/** If @ signs should be legal in identifiers. */
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const unsigned char id_at_ok;
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/** NULL-terminated list of debug format (yasm_dbgfmt) keywords that are
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* valid to use with this object format. The null debug format
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* (null_dbgfmt, "null") should always be in this list so it's possible to
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* have no debug output.
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*/
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const char **dbgfmt_keywords;
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/** Default debug format keyword (set even if there's only one available to
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* use).
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*/
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const char *default_dbgfmt_keyword;
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/** NULL-terminated list of directives. NULL if none. */
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/*@null@*/ const yasm_directive *directives;
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/** NULL-terminated list of standard macro lookups. NULL if none. */
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const yasm_stdmac *stdmacs;
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/** Create object format.
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* Module-level implementation of yasm_objfmt_create().
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* Call yasm_objfmt_create() instead of calling this function.
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* \param object object
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* \param a architecture in use
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* \return NULL if architecture/machine combination not supported.
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*/
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/*@null@*/ /*@only@*/ yasm_objfmt * (*create) (yasm_object *object);
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/** Module-level implementation of yasm_objfmt_output().
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* Call yasm_objfmt_output() instead of calling this function.
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*/
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void (*output) (yasm_object *o, FILE *f, int all_syms,
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yasm_errwarns *errwarns);
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/** Module-level implementation of yasm_objfmt_destroy().
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* Call yasm_objfmt_destroy() instead of calling this function.
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*/
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void (*destroy) (/*@only@*/ yasm_objfmt *objfmt);
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/** Module-level implementation of yasm_objfmt_add_default_section().
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* Call yasm_objfmt_add_default_section() instead of calling this function.
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*/
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yasm_section * (*add_default_section) (yasm_object *object);
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/** Module-level implementation of yasm_objfmt_init_new_section().
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* Call yasm_objfmt_init_new_section() instead of calling this function.
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*/
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void (*init_new_section) (yasm_section *section, unsigned long line);
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/** Module-level implementation of yasm_objfmt_section_switch().
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* Call yasm_objfmt_section_switch() instead of calling this function.
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*/
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/*@observer@*/ /*@null@*/ yasm_section *
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(*section_switch)(yasm_object *object, yasm_valparamhead *valparams,
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/*@null@*/ yasm_valparamhead *objext_valparams,
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unsigned long line);
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/** Module-level implementation of yasm_objfmt_get_special_sym().
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* Call yasm_objfmt_get_special_sym() instead of calling this function.
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*/
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/*@observer@*/ /*@null@*/ yasm_symrec *
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(*get_special_sym)(yasm_object *object, const char *name,
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const char *parser);
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};
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/** Create object format.
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* \param module object format module
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* \param object object
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* \return NULL if architecture/machine combination not supported.
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*/
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/*@null@*/ /*@only@*/ yasm_objfmt *yasm_objfmt_create
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(const yasm_objfmt_module *module, yasm_object *object);
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/** Write out (post-optimized) sections to the object file.
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* This function may call yasm_symrec_* functions as necessary (including
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* yasm_symrec_traverse()) to retrieve symbolic information.
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* \param object object
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* \param f output object file
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* \param all_syms if nonzero, all symbols should be included in
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* the object file
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* \param errwarns error/warning set
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* \note Errors and warnings are stored into errwarns.
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*/
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void yasm_objfmt_output(yasm_object *object, FILE *f, int all_syms,
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yasm_errwarns *errwarns);
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/** Cleans up any allocated object format memory.
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* \param objfmt object format
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*/
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void yasm_objfmt_destroy(/*@only@*/ yasm_objfmt *objfmt);
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/** Add a default section to an object.
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* \param object object
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* \return Default section.
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*/
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yasm_section *yasm_objfmt_add_default_section(yasm_object *object);
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/** Initialize the object-format specific portion of a section. Called
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* by yasm_object_get_general(); in general should not be directly called.
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* \param section section
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* \param line virtual line (from yasm_linemap)
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*/
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void yasm_objfmt_init_new_section(yasm_object *object, unsigned long line);
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/** Switch object file sections. The first val of the valparams should
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* be the section name. Calls yasm_object_get_general() to actually get
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* the section.
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* \param object object
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* \param valparams value/parameters
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* \param objext_valparams object format-specific value/parameters
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* \param line virtual line (from yasm_linemap)
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* \return NULL on error, otherwise new section.
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*/
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/*@observer@*/ /*@null@*/ yasm_section *yasm_objfmt_section_switch
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(yasm_object *object, yasm_valparamhead *valparams,
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/*@null@*/ yasm_valparamhead *objext_valparams, unsigned long line);
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/** Get a special symbol. Special symbols are generally used to generate
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* special relocation types via the WRT mechanism.
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* \param object object
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* \param name symbol name (not including any parser-specific prefix)
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* \param parser parser keyword
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* \return NULL if unrecognized, otherwise special symbol.
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*/
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/*@observer@*/ /*@null@*/ yasm_symrec *yasm_objfmt_get_special_sym
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(yasm_object *object, const char *name, const char *parser);
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#ifndef YASM_DOXYGEN
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/* Inline macro implementations for objfmt functions */
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#define yasm_objfmt_create(module, object) module->create(object)
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#define yasm_objfmt_output(object, f, all_syms, ews) \
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((yasm_objfmt_base *)((object)->objfmt))->module->output \
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(object, f, all_syms, ews)
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#define yasm_objfmt_destroy(objfmt) \
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((yasm_objfmt_base *)objfmt)->module->destroy(objfmt)
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#define yasm_objfmt_section_switch(object, vpms, oe_vpms, line) \
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((yasm_objfmt_base *)((object)->objfmt))->module->section_switch \
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(object, vpms, oe_vpms, line)
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#define yasm_objfmt_add_default_section(object) \
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((yasm_objfmt_base *)((object)->objfmt))->module->add_default_section \
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(object)
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#define yasm_objfmt_init_new_section(section, line) \
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((yasm_objfmt_base *)((object)->objfmt))->module->init_new_section \
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(section, line)
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#define yasm_objfmt_get_special_sym(object, name, parser) \
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((yasm_objfmt_base *)((object)->objfmt))->module->get_special_sym \
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(object, name, parser)
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#endif
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#endif
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