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87326c78 DD |
1 | /* load.c --- loading object files into the RL78 simulator. |
2 | ||
3666a048 | 3 | Copyright (C) 2005-2021 Free Software Foundation, Inc. |
87326c78 DD |
4 | Contributed by Red Hat, Inc. |
5 | ||
6 | This file is part of the GNU simulators. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 3 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program. If not, see <http://www.gnu.org/licenses/>. | |
20 | */ | |
21 | ||
6df01ab8 MF |
22 | /* This must come before any other includes. */ |
23 | #include "defs.h" | |
87326c78 | 24 | |
87326c78 DD |
25 | #include <stdio.h> |
26 | #include <stdlib.h> | |
27 | #include <string.h> | |
28 | ||
29 | #include "libiberty.h" | |
30 | #include "bfd.h" | |
4819f490 NC |
31 | #include "elf-bfd.h" |
32 | #include "elf/rl78.h" | |
87326c78 DD |
33 | #include "cpu.h" |
34 | #include "mem.h" | |
35 | #include "load.h" | |
36 | #include "elf/internal.h" | |
37 | #include "elf/common.h" | |
38 | ||
39 | /* Helper function for invoking a GDB-specified printf. */ | |
40 | static void | |
41 | xprintf (host_callback *callback, const char *fmt, ...) | |
42 | { | |
43 | va_list ap; | |
44 | ||
45 | va_start (ap, fmt); | |
46 | ||
47 | (*callback->vprintf_filtered) (callback, fmt, ap); | |
48 | ||
49 | va_end (ap); | |
50 | } | |
51 | ||
52 | /* Given a file offset, look up the section name. */ | |
53 | static const char * | |
54 | find_section_name_by_offset (bfd *abfd, file_ptr filepos) | |
55 | { | |
56 | asection *s; | |
57 | ||
58 | for (s = abfd->sections; s; s = s->next) | |
59 | if (s->filepos == filepos) | |
fd361982 | 60 | return bfd_section_name (s); |
87326c78 DD |
61 | |
62 | return "(unknown)"; | |
63 | } | |
64 | ||
65 | void | |
66 | rl78_load (bfd *prog, host_callback *callbacks, const char * const simname) | |
67 | { | |
68 | Elf_Internal_Phdr * phdrs; | |
69 | long sizeof_phdrs; | |
70 | int num_headers; | |
71 | int i; | |
72 | int max_rom = 0; | |
73 | ||
74 | init_cpu (); | |
75 | ||
76 | /* Note we load by ELF program header not by BFD sections. | |
77 | This is because BFD sections get their information from | |
78 | the ELF section structure, which only includes a VMA value | |
79 | and not an LMA value. */ | |
80 | sizeof_phdrs = bfd_get_elf_phdr_upper_bound (prog); | |
81 | if (sizeof_phdrs == 0) | |
82 | { | |
83 | fprintf (stderr, "%s: Failed to get size of program headers\n", simname); | |
84 | return; | |
85 | } | |
86 | phdrs = xmalloc (sizeof_phdrs); | |
87 | ||
88 | num_headers = bfd_get_elf_phdrs (prog, phdrs); | |
89 | if (num_headers < 1) | |
90 | { | |
91 | fprintf (stderr, "%s: Failed to read program headers\n", simname); | |
92 | return; | |
93 | } | |
4819f490 | 94 | |
4819f490 NC |
95 | switch (elf_elfheader (prog)->e_flags & E_FLAG_RL78_CPU_MASK) |
96 | { | |
0952813b DD |
97 | case E_FLAG_RL78_G10: |
98 | rl78_g10_mode = 1; | |
99 | g13_multiply = 0; | |
100 | g14_multiply = 0; | |
101 | mem_set_mirror (0, 0xf8000, 4096); | |
102 | break; | |
103 | case E_FLAG_RL78_G13: | |
104 | rl78_g10_mode = 0; | |
105 | g13_multiply = 1; | |
106 | g14_multiply = 0; | |
107 | break; | |
4819f490 | 108 | case E_FLAG_RL78_G14: |
0952813b DD |
109 | rl78_g10_mode = 0; |
110 | g13_multiply = 0; | |
111 | g14_multiply = 1; | |
112 | break; | |
4819f490 | 113 | default: |
0952813b | 114 | /* Keep whatever was manually specified. */ |
4819f490 | 115 | break; |
99067e29 | 116 | } |
4819f490 | 117 | |
87326c78 DD |
118 | for (i = 0; i < num_headers; i++) |
119 | { | |
120 | Elf_Internal_Phdr * p = phdrs + i; | |
121 | char *buf; | |
122 | bfd_vma size; | |
123 | bfd_vma base; | |
124 | file_ptr offset; | |
125 | ||
126 | size = p->p_filesz; | |
127 | if (size <= 0) | |
128 | continue; | |
129 | ||
130 | base = p->p_paddr; | |
131 | if (verbose > 1) | |
5ee0bc23 MF |
132 | fprintf (stderr, |
133 | "[load segment: lma=%08" BFD_VMA_FMT "x vma=%08x " | |
134 | "size=%08" BFD_VMA_FMT "x]\n", | |
135 | base, (int) p->p_vaddr, size); | |
87326c78 DD |
136 | if (callbacks) |
137 | xprintf (callbacks, | |
5ee0bc23 MF |
138 | "Loading section %s, size %#" BFD_VMA_FMT "x " |
139 | "lma %08" BFD_VMA_FMT "x vma %08lx\n", | |
140 | find_section_name_by_offset (prog, p->p_offset), | |
87326c78 DD |
141 | size, base, p->p_vaddr); |
142 | ||
143 | buf = xmalloc (size); | |
144 | ||
145 | offset = p->p_offset; | |
293acfae | 146 | if (bfd_seek (prog, offset, SEEK_SET) != 0) |
87326c78 DD |
147 | { |
148 | fprintf (stderr, "%s, Failed to seek to offset %lx\n", simname, (long) offset); | |
149 | continue; | |
150 | } | |
151 | ||
293acfae | 152 | if (bfd_bread (buf, size, prog) != size) |
87326c78 | 153 | { |
5ee0bc23 MF |
154 | fprintf (stderr, "%s: Failed to read %" BFD_VMA_FMT "x bytes\n", |
155 | simname, size); | |
87326c78 DD |
156 | continue; |
157 | } | |
158 | ||
159 | if (base > 0xeffff || base + size > 0xeffff) | |
160 | { | |
5ee0bc23 MF |
161 | fprintf (stderr, |
162 | "%s, Can't load image to RAM/SFR space: 0x%" BFD_VMA_FMT "x " | |
163 | "- 0x%" BFD_VMA_FMT "x\n", | |
87326c78 DD |
164 | simname, base, base+size); |
165 | continue; | |
166 | } | |
167 | if (max_rom < base + size) | |
168 | max_rom = base + size; | |
169 | ||
170 | mem_put_blk (base, buf, size); | |
171 | free (buf); | |
172 | } | |
173 | ||
174 | free (phdrs); | |
175 | ||
176 | mem_rom_size (max_rom); | |
177 | ||
178 | pc = prog->start_address; | |
179 | ||
180 | if (strcmp (bfd_get_target (prog), "srec") == 0 | |
181 | || pc == 0) | |
182 | { | |
183 | pc = mem_get_hi (0); | |
184 | } | |
185 | ||
186 | if (verbose > 1) | |
187 | fprintf (stderr, "[start pc=%08x]\n", (unsigned int) pc); | |
188 | } |