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5b7369d7e0
1. Error messages would issue with the line number of %endrep. 2. Debug line information would ignore both macros and reps. This is doubly wrong; macros are semantically equivalent to inline functions, and it is expected that debuggers trace into these functions. These changes finishes the last parts of moving all responsibility for the listing enable/disable into the preprocessor, so remove the way over-complicated macro inhibit facility from the listing module entirely. Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
166 lines
5.1 KiB
C
166 lines
5.1 KiB
C
/* ----------------------------------------------------------------------- *
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*
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* Copyright 1996-2020 The NASM Authors - All Rights Reserved
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* See the file AUTHORS included with the NASM distribution for
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* the specific copyright holders.
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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
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* conditions are met:
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*
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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
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* ----------------------------------------------------------------------- */
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/*
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* These functions are used to keep track of the source code file and name.
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*/
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#ifndef ASM_SRCFILE_H
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#define ASM_SRCFILE_H
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#include "compiler.h"
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struct src_location {
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const char *filename;
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int32_t lineno;
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};
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struct src_location_stack {
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struct src_location l;
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struct src_location_stack *up, *down;
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const void *macro;
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};
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extern struct src_location_stack _src_top;
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extern struct src_location_stack *_src_bottom;
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extern struct src_location_stack *_src_error;
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void src_init(void);
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void src_free(void);
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const char *src_set_fname(const char *newname);
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static inline const char *src_get_fname(void)
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{
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return _src_bottom->l.filename;
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}
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static inline int32_t src_set_linnum(int32_t newline)
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{
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int32_t oldline = _src_bottom->l.lineno;
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_src_bottom->l.lineno = newline;
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return oldline;
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}
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static inline int32_t src_get_linnum(void)
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{
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return _src_bottom->l.lineno;
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}
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/* Can be used when there is no need for the old information */
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void src_set(int32_t line, const char *filename);
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/*
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* src_get gets both the source file name and line.
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* It is also used if you maintain private status about the source location
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* It return 0 if the information was the same as the last time you
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* checked, -2 if the name changed and (new-old) if just the line changed.
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*
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* xname must point to a filename string previously returned from any
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* function of this subsystem or be NULL; another string value will
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* not work.
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*/
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static inline int32_t src_get(int32_t *xline, const char **xname)
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{
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const char *xn = *xname;
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int32_t xl = *xline;
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int32_t line = _src_bottom->l.lineno;
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*xline = line;
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*xname = _src_bottom->l.filename;
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/* The return value is expected to be optimized out almost everywhere */
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if (!xn || xn != _src_bottom->l.filename)
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return -2;
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else
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return line - xl;
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}
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/*
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* Returns the current information as a structure.
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*/
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static inline struct src_location src_where(void)
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{
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return _src_bottom->l;
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}
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/*
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* Returns the top-level information as a structure. Use this for panic
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* errors, since descent is not possible there.
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*/
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static inline struct src_location src_where_top(void)
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{
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return _src_top.l;
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}
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/*
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* Returns the appropriate level of the location stack to use for error
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* messages. This is the same as the top level except during the descent
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* through the macro hierarchy for elucidation;
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*/
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static inline struct src_location src_where_error(void)
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{
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return _src_error->l;
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}
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static inline const void *src_error_down(void)
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{
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if (_src_error->down) {
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_src_error = _src_error->down;
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return _src_error->macro;
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} else {
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return NULL;
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}
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}
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static inline void src_error_reset(void)
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{
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_src_error = &_src_top;
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}
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/*
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* Sets the current information. The filename member of the structure
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* *must* have been previously returned by src_get(), src_where(), or
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* src_get_fname() and therefore be present in the hash.
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*/
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static inline struct src_location src_update(struct src_location whence)
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{
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struct src_location old = _src_bottom->l;
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_src_bottom->l = whence;
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return old;
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}
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/*
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* Push/pop macro expansion level. "macroname" must remain constant at
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* least until the same macro expansion level is popped.
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*/
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void src_macro_push(const void *macroname, struct src_location where);
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static inline const void *src_macro_current(void)
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{
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return _src_bottom->macro;
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}
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void src_macro_pop(void);
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#endif /* ASM_SRCFILE_H */
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