1 /* output-file.c - Deal with the output file
2 Copyright (C) 1987-2024 Free Software Foundation, Inc.
3
4 This file is part of GAS, the GNU Assembler.
5
6 GAS is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3, or (at your option)
9 any later version.
10
11 GAS is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with GAS; see the file COPYING. If not, write to
18 the Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
19 02110-1301, USA. */
20
21 #include "as.h"
22 #include "subsegs.h"
23 #include "sb.h"
24 #include "macro.h"
25 #include "output-file.h"
26
27 #ifndef TARGET_MACH
28 #define TARGET_MACH 0
29 #endif
30
31 bfd *stdoutput;
32
33 void
output_file_create(const char * name)34 output_file_create (const char *name)
35 {
36 if (name[0] == '-' && name[1] == '\0')
37 as_fatal (_("can't open a bfd on stdout %s"), name);
38
39 else if (!(stdoutput = bfd_openw (name, TARGET_FORMAT)))
40 {
41 bfd_error_type err = bfd_get_error ();
42
43 if (err == bfd_error_invalid_target)
44 as_fatal (_("selected target format '%s' unknown"), TARGET_FORMAT);
45 else
46 as_fatal (_("can't create %s: %s"), name, bfd_errmsg (err));
47 }
48
49 bfd_set_format (stdoutput, bfd_object);
50 bfd_set_arch_mach (stdoutput, TARGET_ARCH, TARGET_MACH);
51 if (flag_traditional_format)
52 stdoutput->flags |= BFD_TRADITIONAL_FORMAT;
53 }
54
55 static void
stash_frchain_obs(asection * sec)56 stash_frchain_obs (asection *sec)
57 {
58 segment_info_type *info = seg_info (sec);
59 if (info)
60 {
61 struct frchain *frchp;
62 for (frchp = info->frchainP; frchp; frchp = frchp->frch_next)
63 obstack_ptr_grow (¬es, &frchp->frch_obstack);
64 info->frchainP = NULL;
65 }
66 }
67
68 void
output_file_close(void)69 output_file_close (void)
70 {
71 bool res;
72 bfd *obfd = stdoutput;
73 struct obstack **obs;
74 asection *sec;
75 const char *filename;
76
77 if (obfd == NULL)
78 return;
79
80 /* Prevent an infinite loop - if the close failed we will call as_fatal
81 which will call xexit() which may call this function again... */
82 stdoutput = NULL;
83
84 /* We can't free obstacks attached to the output bfd sections before
85 closing the output bfd since data in those obstacks may need to
86 be accessed, but we can't access anything in the output bfd after
87 it is closed.. */
88 for (sec = obfd->sections; sec; sec = sec->next)
89 stash_frchain_obs (sec);
90 stash_frchain_obs (reg_section);
91 stash_frchain_obs (expr_section);
92 stash_frchain_obs (bfd_abs_section_ptr);
93 stash_frchain_obs (bfd_und_section_ptr);
94 obstack_ptr_grow (¬es, NULL);
95 obs = obstack_finish (¬es);
96
97 /* Close the bfd. */
98 if (!flag_always_generate_output && had_errors ())
99 res = bfd_close_all_done (obfd);
100 else
101 res = bfd_close (obfd);
102 now_seg = NULL;
103 now_subseg = 0;
104
105 filename = out_file_name;
106 out_file_name = NULL;
107 if (!keep_it && filename)
108 unlink_if_ordinary (filename);
109
110 #ifdef md_end
111 md_end ();
112 #endif
113 #ifdef obj_end
114 obj_end ();
115 #endif
116 macro_end ();
117 expr_end ();
118 read_end ();
119 symbol_end ();
120 subsegs_end (obs);
121
122 if (!res)
123 as_fatal ("%s: %s", filename, bfd_errmsg (bfd_get_error ()));
124 }
125