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420557e8 FB |
1 | #include "vl.h" |
2 | #include "disas.h" | |
e80cfcfc FB |
3 | #include "exec-all.h" |
4 | ||
5 | struct exec | |
6 | { | |
7 | uint32_t a_info; /* Use macros N_MAGIC, etc for access */ | |
8 | uint32_t a_text; /* length of text, in bytes */ | |
9 | uint32_t a_data; /* length of data, in bytes */ | |
10 | uint32_t a_bss; /* length of uninitialized data area, in bytes */ | |
11 | uint32_t a_syms; /* length of symbol table data in file, in bytes */ | |
12 | uint32_t a_entry; /* start address */ | |
13 | uint32_t a_trsize; /* length of relocation info for text, in bytes */ | |
14 | uint32_t a_drsize; /* length of relocation info for data, in bytes */ | |
15 | }; | |
16 | ||
17 | #ifdef BSWAP_NEEDED | |
18 | static void bswap_ahdr(struct exec *e) | |
19 | { | |
20 | bswap32s(&e->a_info); | |
21 | bswap32s(&e->a_text); | |
22 | bswap32s(&e->a_data); | |
23 | bswap32s(&e->a_bss); | |
24 | bswap32s(&e->a_syms); | |
25 | bswap32s(&e->a_entry); | |
26 | bswap32s(&e->a_trsize); | |
27 | bswap32s(&e->a_drsize); | |
28 | } | |
29 | #else | |
30 | #define bswap_ahdr(x) do { } while (0) | |
31 | #endif | |
32 | ||
33 | #define N_MAGIC(exec) ((exec).a_info & 0xffff) | |
34 | #define OMAGIC 0407 | |
35 | #define NMAGIC 0410 | |
36 | #define ZMAGIC 0413 | |
37 | #define QMAGIC 0314 | |
38 | #define _N_HDROFF(x) (1024 - sizeof (struct exec)) | |
39 | #define N_TXTOFF(x) \ | |
40 | (N_MAGIC(x) == ZMAGIC ? _N_HDROFF((x)) + sizeof (struct exec) : \ | |
41 | (N_MAGIC(x) == QMAGIC ? 0 : sizeof (struct exec))) | |
42 | #define N_TXTADDR(x) (N_MAGIC(x) == QMAGIC ? TARGET_PAGE_SIZE : 0) | |
43 | #define N_DATOFF(x) (N_TXTOFF(x) + (x).a_text) | |
44 | #define _N_SEGMENT_ROUND(x) (((x) + TARGET_PAGE_SIZE - 1) & ~(TARGET_PAGE_SIZE - 1)) | |
45 | ||
46 | #define _N_TXTENDADDR(x) (N_TXTADDR(x)+(x).a_text) | |
47 | ||
48 | #define N_DATADDR(x) \ | |
49 | (N_MAGIC(x)==OMAGIC? (_N_TXTENDADDR(x)) \ | |
50 | : (_N_SEGMENT_ROUND (_N_TXTENDADDR(x)))) | |
51 | ||
420557e8 | 52 | |
420557e8 FB |
53 | #define ELF_CLASS ELFCLASS32 |
54 | #define ELF_DATA ELFDATA2MSB | |
55 | #define ELF_ARCH EM_SPARC | |
56 | ||
57 | #include "elf.h" | |
58 | ||
3475187d FB |
59 | #ifndef BSWAP_NEEDED |
60 | #define bswap_ehdr32(e) do { } while (0) | |
61 | #define bswap_phdr32(e) do { } while (0) | |
62 | #define bswap_shdr32(e) do { } while (0) | |
63 | #define bswap_sym32(e) do { } while (0) | |
64 | #ifdef TARGET_SPARC64 | |
65 | #define bswap_ehdr64(e) do { } while (0) | |
66 | #define bswap_phdr64(e) do { } while (0) | |
67 | #define bswap_shdr64(e) do { } while (0) | |
68 | #define bswap_sym64(e) do { } while (0) | |
69 | #endif | |
420557e8 FB |
70 | #endif |
71 | ||
3475187d FB |
72 | #define SZ 32 |
73 | #define elf_word uint32_t | |
74 | #define bswapSZs bswap32s | |
75 | #include "elf_ops.h" | |
76 | ||
77 | #ifdef TARGET_SPARC64 | |
78 | #undef elfhdr | |
79 | #undef elf_phdr | |
80 | #undef elf_shdr | |
81 | #undef elf_sym | |
82 | #undef elf_note | |
83 | #undef elf_word | |
84 | #undef bswapSZs | |
85 | #undef SZ | |
86 | #define elfhdr elf64_hdr | |
87 | #define elf_phdr elf64_phdr | |
88 | #define elf_note elf64_note | |
89 | #define elf_shdr elf64_shdr | |
90 | #define elf_sym elf64_sym | |
91 | #define elf_word uint64_t | |
92 | #define bswapSZs bswap64s | |
93 | #define SZ 64 | |
94 | #include "elf_ops.h" | |
95 | #endif | |
420557e8 | 96 | |
e80cfcfc | 97 | int load_elf(const char *filename, uint8_t *addr) |
8d5f07fa | 98 | { |
3475187d | 99 | struct elf32_hdr ehdr; |
8d5f07fa | 100 | int retval, fd; |
3475187d | 101 | Elf32_Half machine; |
420557e8 | 102 | |
8d5f07fa FB |
103 | fd = open(filename, O_RDONLY | O_BINARY); |
104 | if (fd < 0) | |
105 | goto error; | |
420557e8 | 106 | |
8d5f07fa FB |
107 | retval = read(fd, &ehdr, sizeof(ehdr)); |
108 | if (retval < 0) | |
109 | goto error; | |
420557e8 | 110 | |
8d5f07fa | 111 | if (ehdr.e_ident[0] != 0x7f || ehdr.e_ident[1] != 'E' |
3475187d | 112 | || ehdr.e_ident[2] != 'L' || ehdr.e_ident[3] != 'F') |
8d5f07fa | 113 | goto error; |
3475187d FB |
114 | machine = tswap16(ehdr.e_machine); |
115 | if (machine == EM_SPARC || machine == EM_SPARC32PLUS) { | |
116 | struct elf32_phdr phdr; | |
420557e8 | 117 | |
3475187d | 118 | bswap_ehdr32(&ehdr); |
420557e8 | 119 | |
3475187d FB |
120 | if (find_phdr32(&ehdr, fd, &phdr, PT_LOAD)) |
121 | goto error; | |
122 | retval = read_program32(fd, &phdr, addr, ehdr.e_entry); | |
123 | if (retval < 0) | |
124 | goto error; | |
125 | load_symbols32(&ehdr, fd); | |
126 | } | |
127 | #ifdef TARGET_SPARC64 | |
128 | else if (machine == EM_SPARCV9) { | |
129 | struct elf64_hdr ehdr64; | |
130 | struct elf64_phdr phdr; | |
131 | ||
132 | lseek(fd, 0, SEEK_SET); | |
133 | ||
134 | retval = read(fd, &ehdr64, sizeof(ehdr64)); | |
135 | if (retval < 0) | |
136 | goto error; | |
137 | ||
138 | bswap_ehdr64(&ehdr64); | |
139 | ||
140 | if (find_phdr64(&ehdr64, fd, &phdr, PT_LOAD)) | |
141 | goto error; | |
83469015 | 142 | retval = read_program64(fd, &phdr, phys_ram_base + ehdr64.e_entry, ehdr64.e_entry); |
3475187d FB |
143 | if (retval < 0) |
144 | goto error; | |
145 | load_symbols64(&ehdr64, fd); | |
146 | } | |
147 | #endif | |
420557e8 | 148 | |
8d5f07fa FB |
149 | close(fd); |
150 | return retval; | |
151 | error: | |
152 | close(fd); | |
153 | return -1; | |
420557e8 | 154 | } |
420557e8 | 155 | |
e80cfcfc | 156 | int load_aout(const char *filename, uint8_t *addr) |
420557e8 | 157 | { |
e80cfcfc FB |
158 | int fd, size, ret; |
159 | struct exec e; | |
160 | uint32_t magic; | |
420557e8 FB |
161 | |
162 | fd = open(filename, O_RDONLY | O_BINARY); | |
163 | if (fd < 0) | |
164 | return -1; | |
e80cfcfc FB |
165 | |
166 | size = read(fd, &e, sizeof(e)); | |
420557e8 FB |
167 | if (size < 0) |
168 | goto fail; | |
e80cfcfc FB |
169 | |
170 | bswap_ahdr(&e); | |
171 | ||
172 | magic = N_MAGIC(e); | |
173 | switch (magic) { | |
174 | case ZMAGIC: | |
175 | case QMAGIC: | |
176 | case OMAGIC: | |
177 | lseek(fd, N_TXTOFF(e), SEEK_SET); | |
178 | size = read(fd, addr, e.a_text + e.a_data); | |
179 | if (size < 0) | |
180 | goto fail; | |
181 | break; | |
182 | case NMAGIC: | |
183 | lseek(fd, N_TXTOFF(e), SEEK_SET); | |
184 | size = read(fd, addr, e.a_text); | |
185 | if (size < 0) | |
186 | goto fail; | |
187 | ret = read(fd, addr + N_DATADDR(e), e.a_data); | |
188 | if (ret < 0) | |
189 | goto fail; | |
190 | size += ret; | |
191 | break; | |
192 | default: | |
193 | goto fail; | |
194 | } | |
420557e8 FB |
195 | close(fd); |
196 | return size; | |
197 | fail: | |
198 | close(fd); | |
199 | return -1; | |
200 | } | |
201 |