PPC: e500: msync is 440 only, e500 has real sync
[qemu.git] / hw / elf_ops.h
1 static void glue(bswap_ehdr, SZ)(struct elfhdr *ehdr)
2 {
3 bswap16s(&ehdr->e_type); /* Object file type */
4 bswap16s(&ehdr->e_machine); /* Architecture */
5 bswap32s(&ehdr->e_version); /* Object file version */
6 bswapSZs(&ehdr->e_entry); /* Entry point virtual address */
7 bswapSZs(&ehdr->e_phoff); /* Program header table file offset */
8 bswapSZs(&ehdr->e_shoff); /* Section header table file offset */
9 bswap32s(&ehdr->e_flags); /* Processor-specific flags */
10 bswap16s(&ehdr->e_ehsize); /* ELF header size in bytes */
11 bswap16s(&ehdr->e_phentsize); /* Program header table entry size */
12 bswap16s(&ehdr->e_phnum); /* Program header table entry count */
13 bswap16s(&ehdr->e_shentsize); /* Section header table entry size */
14 bswap16s(&ehdr->e_shnum); /* Section header table entry count */
15 bswap16s(&ehdr->e_shstrndx); /* Section header string table index */
16 }
17
18 static void glue(bswap_phdr, SZ)(struct elf_phdr *phdr)
19 {
20 bswap32s(&phdr->p_type); /* Segment type */
21 bswapSZs(&phdr->p_offset); /* Segment file offset */
22 bswapSZs(&phdr->p_vaddr); /* Segment virtual address */
23 bswapSZs(&phdr->p_paddr); /* Segment physical address */
24 bswapSZs(&phdr->p_filesz); /* Segment size in file */
25 bswapSZs(&phdr->p_memsz); /* Segment size in memory */
26 bswap32s(&phdr->p_flags); /* Segment flags */
27 bswapSZs(&phdr->p_align); /* Segment alignment */
28 }
29
30 static void glue(bswap_shdr, SZ)(struct elf_shdr *shdr)
31 {
32 bswap32s(&shdr->sh_name);
33 bswap32s(&shdr->sh_type);
34 bswapSZs(&shdr->sh_flags);
35 bswapSZs(&shdr->sh_addr);
36 bswapSZs(&shdr->sh_offset);
37 bswapSZs(&shdr->sh_size);
38 bswap32s(&shdr->sh_link);
39 bswap32s(&shdr->sh_info);
40 bswapSZs(&shdr->sh_addralign);
41 bswapSZs(&shdr->sh_entsize);
42 }
43
44 static void glue(bswap_sym, SZ)(struct elf_sym *sym)
45 {
46 bswap32s(&sym->st_name);
47 bswapSZs(&sym->st_value);
48 bswapSZs(&sym->st_size);
49 bswap16s(&sym->st_shndx);
50 }
51
52 static struct elf_shdr *glue(find_section, SZ)(struct elf_shdr *shdr_table,
53 int n, int type)
54 {
55 int i;
56 for(i=0;i<n;i++) {
57 if (shdr_table[i].sh_type == type)
58 return shdr_table + i;
59 }
60 return NULL;
61 }
62
63 static int glue(symfind, SZ)(const void *s0, const void *s1)
64 {
65 target_phys_addr_t addr = *(target_phys_addr_t *)s0;
66 struct elf_sym *sym = (struct elf_sym *)s1;
67 int result = 0;
68 if (addr < sym->st_value) {
69 result = -1;
70 } else if (addr >= sym->st_value + sym->st_size) {
71 result = 1;
72 }
73 return result;
74 }
75
76 static const char *glue(lookup_symbol, SZ)(struct syminfo *s,
77 target_phys_addr_t orig_addr)
78 {
79 struct elf_sym *syms = glue(s->disas_symtab.elf, SZ);
80 struct elf_sym *sym;
81
82 sym = bsearch(&orig_addr, syms, s->disas_num_syms, sizeof(*syms),
83 glue(symfind, SZ));
84 if (sym != NULL) {
85 return s->disas_strtab + sym->st_name;
86 }
87
88 return "";
89 }
90
91 static int glue(symcmp, SZ)(const void *s0, const void *s1)
92 {
93 struct elf_sym *sym0 = (struct elf_sym *)s0;
94 struct elf_sym *sym1 = (struct elf_sym *)s1;
95 return (sym0->st_value < sym1->st_value)
96 ? -1
97 : ((sym0->st_value > sym1->st_value) ? 1 : 0);
98 }
99
100 static int glue(load_symbols, SZ)(struct elfhdr *ehdr, int fd, int must_swab,
101 int clear_lsb)
102 {
103 struct elf_shdr *symtab, *strtab, *shdr_table = NULL;
104 struct elf_sym *syms = NULL;
105 struct syminfo *s;
106 int nsyms, i;
107 char *str = NULL;
108
109 shdr_table = load_at(fd, ehdr->e_shoff,
110 sizeof(struct elf_shdr) * ehdr->e_shnum);
111 if (!shdr_table)
112 return -1;
113
114 if (must_swab) {
115 for (i = 0; i < ehdr->e_shnum; i++) {
116 glue(bswap_shdr, SZ)(shdr_table + i);
117 }
118 }
119
120 symtab = glue(find_section, SZ)(shdr_table, ehdr->e_shnum, SHT_SYMTAB);
121 if (!symtab)
122 goto fail;
123 syms = load_at(fd, symtab->sh_offset, symtab->sh_size);
124 if (!syms)
125 goto fail;
126
127 nsyms = symtab->sh_size / sizeof(struct elf_sym);
128
129 i = 0;
130 while (i < nsyms) {
131 if (must_swab)
132 glue(bswap_sym, SZ)(&syms[i]);
133 /* We are only interested in function symbols.
134 Throw everything else away. */
135 if (syms[i].st_shndx == SHN_UNDEF ||
136 syms[i].st_shndx >= SHN_LORESERVE ||
137 ELF_ST_TYPE(syms[i].st_info) != STT_FUNC) {
138 nsyms--;
139 if (i < nsyms) {
140 syms[i] = syms[nsyms];
141 }
142 continue;
143 }
144 if (clear_lsb) {
145 /* The bottom address bit marks a Thumb or MIPS16 symbol. */
146 syms[i].st_value &= ~(glue(glue(Elf, SZ), _Addr))1;
147 }
148 i++;
149 }
150 if (nsyms) {
151 syms = g_realloc(syms, nsyms * sizeof(*syms));
152
153 qsort(syms, nsyms, sizeof(*syms), glue(symcmp, SZ));
154 for (i = 0; i < nsyms - 1; i++) {
155 if (syms[i].st_size == 0) {
156 syms[i].st_size = syms[i + 1].st_value - syms[i].st_value;
157 }
158 }
159 } else {
160 g_free(syms);
161 syms = NULL;
162 }
163
164 /* String table */
165 if (symtab->sh_link >= ehdr->e_shnum)
166 goto fail;
167 strtab = &shdr_table[symtab->sh_link];
168
169 str = load_at(fd, strtab->sh_offset, strtab->sh_size);
170 if (!str)
171 goto fail;
172
173 /* Commit */
174 s = g_malloc0(sizeof(*s));
175 s->lookup_symbol = glue(lookup_symbol, SZ);
176 glue(s->disas_symtab.elf, SZ) = syms;
177 s->disas_num_syms = nsyms;
178 s->disas_strtab = str;
179 s->next = syminfos;
180 syminfos = s;
181 g_free(shdr_table);
182 return 0;
183 fail:
184 g_free(syms);
185 g_free(str);
186 g_free(shdr_table);
187 return -1;
188 }
189
190 static int glue(load_elf, SZ)(const char *name, int fd,
191 uint64_t (*translate_fn)(void *, uint64_t),
192 void *translate_opaque,
193 int must_swab, uint64_t *pentry,
194 uint64_t *lowaddr, uint64_t *highaddr,
195 int elf_machine, int clear_lsb)
196 {
197 struct elfhdr ehdr;
198 struct elf_phdr *phdr = NULL, *ph;
199 int size, i, total_size;
200 elf_word mem_size;
201 uint64_t addr, low = (uint64_t)-1, high = 0;
202 uint8_t *data = NULL;
203 char label[128];
204
205 if (read(fd, &ehdr, sizeof(ehdr)) != sizeof(ehdr))
206 goto fail;
207 if (must_swab) {
208 glue(bswap_ehdr, SZ)(&ehdr);
209 }
210
211 switch (elf_machine) {
212 case EM_PPC64:
213 if (EM_PPC64 != ehdr.e_machine)
214 if (EM_PPC != ehdr.e_machine)
215 goto fail;
216 break;
217 case EM_X86_64:
218 if (EM_X86_64 != ehdr.e_machine)
219 if (EM_386 != ehdr.e_machine)
220 goto fail;
221 break;
222 case EM_MICROBLAZE:
223 if (EM_MICROBLAZE != ehdr.e_machine)
224 if (EM_MICROBLAZE_OLD != ehdr.e_machine)
225 goto fail;
226 break;
227 default:
228 if (elf_machine != ehdr.e_machine)
229 goto fail;
230 }
231
232 if (pentry)
233 *pentry = (uint64_t)(elf_sword)ehdr.e_entry;
234
235 glue(load_symbols, SZ)(&ehdr, fd, must_swab, clear_lsb);
236
237 size = ehdr.e_phnum * sizeof(phdr[0]);
238 lseek(fd, ehdr.e_phoff, SEEK_SET);
239 phdr = g_malloc0(size);
240 if (!phdr)
241 goto fail;
242 if (read(fd, phdr, size) != size)
243 goto fail;
244 if (must_swab) {
245 for(i = 0; i < ehdr.e_phnum; i++) {
246 ph = &phdr[i];
247 glue(bswap_phdr, SZ)(ph);
248 }
249 }
250
251 total_size = 0;
252 for(i = 0; i < ehdr.e_phnum; i++) {
253 ph = &phdr[i];
254 if (ph->p_type == PT_LOAD) {
255 mem_size = ph->p_memsz;
256 /* XXX: avoid allocating */
257 data = g_malloc0(mem_size);
258 if (ph->p_filesz > 0) {
259 if (lseek(fd, ph->p_offset, SEEK_SET) < 0)
260 goto fail;
261 if (read(fd, data, ph->p_filesz) != ph->p_filesz)
262 goto fail;
263 }
264 /* address_offset is hack for kernel images that are
265 linked at the wrong physical address. */
266 if (translate_fn) {
267 addr = translate_fn(translate_opaque, ph->p_paddr);
268 } else {
269 addr = ph->p_paddr;
270 }
271
272 snprintf(label, sizeof(label), "phdr #%d: %s", i, name);
273 rom_add_blob_fixed(label, data, mem_size, addr);
274
275 total_size += mem_size;
276 if (addr < low)
277 low = addr;
278 if ((addr + mem_size) > high)
279 high = addr + mem_size;
280
281 g_free(data);
282 data = NULL;
283 }
284 }
285 g_free(phdr);
286 if (lowaddr)
287 *lowaddr = (uint64_t)(elf_sword)low;
288 if (highaddr)
289 *highaddr = (uint64_t)(elf_sword)high;
290 return total_size;
291 fail:
292 g_free(data);
293 g_free(phdr);
294 return -1;
295 }