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https://github.com/bminor/binutils-gdb.git
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1a12e548ba
This removes many unnecessary NULL casts. I'm also adding a few arg casts in concat calls, to make the code consistent. Advice from quite a few years ago was that it's better to use the exact type for args corresponding to function ellipses, in case NULL is defined as plain 0. (I think that happened with some early 64-bit systems. Plain NULL ought to be OK nowadays.)
86 lines
2.4 KiB
C
86 lines
2.4 KiB
C
/* Remap file names for debug info for GNU assembler.
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Copyright (C) 2007-2025 Free Software Foundation, Inc.
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This file is part of GAS, the GNU Assembler.
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GAS is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GAS is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GAS; see the file COPYING. If not, write to the Free
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Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
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02110-1301, USA. */
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#include "as.h"
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#include "filenames.h"
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/* Structure recording the mapping from source file and directory
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names at compile time to those to be embedded in debug
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information. */
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typedef struct debug_prefix_map
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{
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const char *old_prefix;
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const char *new_prefix;
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size_t old_len;
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size_t new_len;
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struct debug_prefix_map *next;
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} debug_prefix_map;
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/* Linked list of such structures. */
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debug_prefix_map *debug_prefix_maps;
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/* Record a debug file prefix mapping. ARG is the argument to
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-fdebug-prefix-map and must be of the form OLD=NEW. */
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void
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add_debug_prefix_map (const char *arg)
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{
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debug_prefix_map *map;
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const char *p;
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char *o;
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p = strchr (arg, '=');
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if (!p)
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{
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as_fatal (_("invalid argument '%s' to -fdebug-prefix-map"), arg);
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return;
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}
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map = XNEW (debug_prefix_map);
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o = xstrdup (arg);
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map->old_prefix = o;
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map->old_len = p - arg;
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o[map->old_len] = 0;
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p++;
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map->new_prefix = xstrdup (p);
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map->new_len = strlen (p);
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map->next = debug_prefix_maps;
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debug_prefix_maps = map;
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}
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/* Perform user-specified mapping of debug filename prefixes. Returns
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a newly allocated buffer containing the name corresponding to FILENAME.
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It is the caller's responsibility to free the buffer. */
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char *
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remap_debug_filename (const char *filename)
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{
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debug_prefix_map *map;
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for (map = debug_prefix_maps; map; map = map->next)
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if (filename_ncmp (filename, map->old_prefix, map->old_len) == 0)
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{
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const char *name = filename + map->old_len;
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return concat (map->new_prefix, name, (const char *) NULL);
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}
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return xstrdup (filename);
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}
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