usr.bin/objformat/objformat.c

   1 /*-
   2  * Copyright (c) 2004, The DragonFly Project.  All rights reserved.
   3  * Copyright (c) 1998, Peter Wemm <peter@netplex.com.au>
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  *
  27  * $FreeBSD: src/usr.bin/objformat/objformat.c,v 1.6 1998/10/24 02:01:30 jdp Exp $
  28  * $DragonFly: src/usr.bin/objformat/objformat.c,v 1.21 2007/05/08 20:59:37 swildner Exp $
  29  */
  30
  31 #include <err.h>
  32 #include <objformat.h>
  33 #include <stdio.h>
  34 #include <stdlib.h>
  35 #include <string.h>
  36 #include <unistd.h>
  37
  38 #ifndef CCVER_DEFAULT
  39 #define CCVER_DEFAULT "gcc34"
  40 #endif
  41
  42 #ifndef BINUTILSVER_DEFAULT
  43 #define BINUTILSVER_DEFAULT "binutils217"
  44 #endif
  45 #define BINUTILSVER_GCC34 "binutils217"
  46
  47 #define OBJFORMAT       0
  48 #define COMPILER        1
  49 #define BINUTILS1       2
  50 #define BINUTILS2       3
  51
  52 #define arysize(ary)    (sizeof(ary)/sizeof((ary)[0]))
  53
  54 struct command {
  55         const char *cmd;
  56         int type;
  57 };
  58
  59 static struct command commands[] = {
  60         {"CC",          COMPILER},
  61         {"c++",         COMPILER},
  62         {"c++filt",     COMPILER},
  63         {"cc",          COMPILER},
  64         {"cpp",         COMPILER},
  65         {"f77",         COMPILER},
  66         {"g77",         COMPILER},
  67         {"g++",         COMPILER},
  68         {"gcc",         COMPILER},
  69         {"gcov",        COMPILER},
  70         {"addr2line",   BINUTILS2},
  71         {"ar",          BINUTILS2},
  72         {"as",          BINUTILS2},
  73         {"gasp",        BINUTILS2},
  74         {"gdb",         BINUTILS2},
  75         {"ld",          BINUTILS2},
  76         {"nm",          BINUTILS2},
  77         {"objcopy",     BINUTILS2},
  78         {"objdump",     BINUTILS2},
  79         {"ranlib",      BINUTILS2},
  80         {"size",        BINUTILS2},
  81         {"strings",     BINUTILS2},
  82         {"strip",       BINUTILS2},
  83         {"objformat",   OBJFORMAT}
  84 };
  85
  86 int
  87 main(int argc, char **argv)
  88 {
  89         struct command *cmds;
  90         char objformat[32];
  91         char *path, *chunk;
  92         char *cmd, *newcmd = NULL;
  93         const char *objformat_path;
  94         const char *ccver;
  95         const char *buver;
  96         const char *env_value = NULL;
  97         const char *base_path = NULL;
  98         int use_objformat = 0;
  99
 100         if (getobjformat(objformat, sizeof objformat, &argc, argv) == -1)
 101                 errx(1, "Invalid object format");
 102
 103         /*
 104          * Get the last path elemenet of the program name being executed
 105          */
 106         cmd = strrchr(argv[0], '/');
 107         if (cmd != NULL)
 108                 cmd++;
 109         else
 110                 cmd = argv[0];
 111
 112         for (cmds = commands; cmds < &commands[arysize(commands)]; ++cmds) {
 113                 if (strcmp(cmd, cmds->cmd) == 0)
 114                         break;
 115         }
 116
 117         if ((ccver = getenv("CCVER")) == NULL || ccver[0] == 0)
 118                 ccver = CCVER_DEFAULT;
 119         if ((buver = getenv("BINUTILSVER")) == NULL) {
 120                 if (strcmp(ccver, "gcc34") == 0)
 121                         buver = BINUTILSVER_GCC34;
 122                 else
 123                         buver = BINUTILSVER_DEFAULT;    /* fall through */
 124         }
 125
 126         if (cmds) {
 127                 switch (cmds->type) {
 128                 case COMPILER:
 129                         base_path = "/usr/libexec";
 130                         use_objformat = 0;
 131                         env_value = ccver;
 132                         break;
 133                 case BINUTILS2:
 134                         use_objformat = 1;
 135                         /* fall through */
 136                 case BINUTILS1:
 137                         env_value = buver;
 138                         base_path = "/usr/libexec";
 139                         break;
 140                 case OBJFORMAT:
 141                         break;
 142                 default:
 143                         err(1, "unknown command type");
 144                         break;
 145                 }
 146         }
 147
 148         /*
 149          * The objformat command itself doesn't need another exec
 150          */
 151         if (cmds->type == OBJFORMAT) {
 152                 if (argc != 1) {
 153                         fprintf(stderr, "Usage: objformat\n");
 154                         exit(1);
 155                 }
 156
 157                 printf("%s\n", objformat);
 158                 exit(0);
 159         }
 160
 161         /*
 162          * make buildworld glue and CCVER overrides.
 163          */
 164         objformat_path = getenv("OBJFORMAT_PATH");
 165         if (objformat_path == NULL)
 166                 objformat_path = "";
 167
 168         path = strdup(objformat_path);
 169
 170         if (setenv("OBJFORMAT", objformat, 1) == -1)
 171                 err(1, "setenv: cannot set OBJFORMAT=%s", objformat);
 172
 173         /*
 174          * objformat_path could be sequence of colon-separated paths.
 175          */
 176         while ((chunk = strsep(&path, ":")) != NULL) {
 177                 if (newcmd != NULL) {
 178                         free(newcmd);
 179                         newcmd = NULL;
 180                 }
 181                 if (use_objformat) {
 182                         asprintf(&newcmd, "%s%s/%s/%s/%s",
 183                                 chunk, base_path, env_value, objformat, cmd);
 184                 } else {
 185                         asprintf(&newcmd, "%s%s/%s/%s",
 186                                 chunk, base_path, env_value, cmd);
 187                 }
 188                 if (newcmd == NULL)
 189                         err(1, "cannot allocate memory");
 190
 191                 argv[0] = newcmd;
 192                 execv(newcmd, argv);
 193         }
 194         if (use_objformat) {
 195                 err(1, "in path [%s]%s/%s/%s/%s",
 196                         objformat_path, base_path, env_value, objformat, cmd);
 197         } else {
 198                 err(1, "in path [%s]%s/%s/%s",
 199                         objformat_path, base_path, env_value, cmd);
 200         }
 201 }
 202