blob: 61265650e5c46e877463ccfe0de083ee407327ef [file] [log] [blame]
bellard5fe141f2006-04-23 17:12:42 +00001static 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
18static 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
30static 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
44static 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
ths5fafdf22007-09-16 21:08:06 +000052static struct elf_shdr *glue(find_section, SZ)(struct elf_shdr *shdr_table,
bellard5fe141f2006-04-23 17:12:42 +000053 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
63static int glue(load_symbols, SZ)(struct elfhdr *ehdr, int fd, int must_swab)
64{
65 struct elf_shdr *symtab, *strtab, *shdr_table = NULL;
66 struct elf_sym *syms = NULL;
67#if (SZ == 64)
68 struct elf32_sym *syms32 = NULL;
69#endif
70 struct syminfo *s;
71 int nsyms, i;
72 char *str = NULL;
73
ths5fafdf22007-09-16 21:08:06 +000074 shdr_table = load_at(fd, ehdr->e_shoff,
bellard5fe141f2006-04-23 17:12:42 +000075 sizeof(struct elf_shdr) * ehdr->e_shnum);
76 if (!shdr_table)
77 return -1;
ths3b46e622007-09-17 08:09:54 +000078
bellard5fe141f2006-04-23 17:12:42 +000079 if (must_swab) {
80 for (i = 0; i < ehdr->e_shnum; i++) {
81 glue(bswap_shdr, SZ)(shdr_table + i);
82 }
83 }
ths3b46e622007-09-17 08:09:54 +000084
bellard5fe141f2006-04-23 17:12:42 +000085 symtab = glue(find_section, SZ)(shdr_table, ehdr->e_shnum, SHT_SYMTAB);
86 if (!symtab)
87 goto fail;
88 syms = load_at(fd, symtab->sh_offset, symtab->sh_size);
89 if (!syms)
90 goto fail;
91
92 nsyms = symtab->sh_size / sizeof(struct elf_sym);
93#if (SZ == 64)
94 syms32 = qemu_mallocz(nsyms * sizeof(struct elf32_sym));
95#endif
96 for (i = 0; i < nsyms; i++) {
97 if (must_swab)
98 glue(bswap_sym, SZ)(&syms[i]);
99#if (SZ == 64)
100 syms32[i].st_name = syms[i].st_name;
101 syms32[i].st_info = syms[i].st_info;
102 syms32[i].st_other = syms[i].st_other;
103 syms32[i].st_shndx = syms[i].st_shndx;
104 syms32[i].st_value = syms[i].st_value & 0xffffffff;
105 syms32[i].st_size = syms[i].st_size & 0xffffffff;
106#endif
107 }
108 /* String table */
109 if (symtab->sh_link >= ehdr->e_shnum)
110 goto fail;
111 strtab = &shdr_table[symtab->sh_link];
112
113 str = load_at(fd, strtab->sh_offset, strtab->sh_size);
114 if (!str)
115 goto fail;
116
117 /* Commit */
118 s = qemu_mallocz(sizeof(*s));
119#if (SZ == 64)
120 s->disas_symtab = syms32;
121 qemu_free(syms);
122#else
123 s->disas_symtab = syms;
124#endif
125 s->disas_num_syms = nsyms;
126 s->disas_strtab = str;
127 s->next = syminfos;
128 syminfos = s;
129 qemu_free(shdr_table);
130 return 0;
131 fail:
132#if (SZ == 64)
133 qemu_free(syms32);
134#endif
135 qemu_free(syms);
136 qemu_free(str);
137 qemu_free(shdr_table);
138 return -1;
139}
140
pbrook9596ebb2007-11-18 01:44:38 +0000141static int glue(load_elf, SZ)(int fd, int64_t virt_to_phys_addend,
142 int must_swab, uint64_t *pentry,
143 uint64_t *lowaddr, uint64_t *highaddr)
bellard5fe141f2006-04-23 17:12:42 +0000144{
145 struct elfhdr ehdr;
146 struct elf_phdr *phdr = NULL, *ph;
147 int size, i, total_size;
blueswir194374542007-09-24 18:41:27 +0000148 elf_word mem_size;
blueswir1eb296a02007-09-25 17:30:09 +0000149 uint64_t addr, low = 0, high = 0;
bellard9ee3c022006-04-26 22:05:26 +0000150 uint8_t *data = NULL;
bellard5fe141f2006-04-23 17:12:42 +0000151
152 if (read(fd, &ehdr, sizeof(ehdr)) != sizeof(ehdr))
153 goto fail;
154 if (must_swab) {
155 glue(bswap_ehdr, SZ)(&ehdr);
156 }
157
ths9042c0e2006-12-23 14:18:40 +0000158 if (ELF_MACHINE != ehdr.e_machine)
159 goto fail;
160
bellard9ee3c022006-04-26 22:05:26 +0000161 if (pentry)
ths82790062007-10-17 23:07:31 +0000162 *pentry = (uint64_t)(elf_sword)ehdr.e_entry;
bellard9ee3c022006-04-26 22:05:26 +0000163
bellard5fe141f2006-04-23 17:12:42 +0000164 glue(load_symbols, SZ)(&ehdr, fd, must_swab);
165
166 size = ehdr.e_phnum * sizeof(phdr[0]);
167 lseek(fd, ehdr.e_phoff, SEEK_SET);
168 phdr = qemu_mallocz(size);
169 if (!phdr)
170 goto fail;
171 if (read(fd, phdr, size) != size)
ths04d4b0c2006-12-23 15:18:47 +0000172 goto fail;
bellard5fe141f2006-04-23 17:12:42 +0000173 if (must_swab) {
174 for(i = 0; i < ehdr.e_phnum; i++) {
175 ph = &phdr[i];
176 glue(bswap_phdr, SZ)(ph);
177 }
178 }
ths3b46e622007-09-17 08:09:54 +0000179
bellard5fe141f2006-04-23 17:12:42 +0000180 total_size = 0;
181 for(i = 0; i < ehdr.e_phnum; i++) {
182 ph = &phdr[i];
183 if (ph->p_type == PT_LOAD) {
184 mem_size = ph->p_memsz;
185 /* XXX: avoid allocating */
186 data = qemu_mallocz(mem_size);
187 if (ph->p_filesz > 0) {
bellard9ee3c022006-04-26 22:05:26 +0000188 if (lseek(fd, ph->p_offset, SEEK_SET) < 0)
ths04d4b0c2006-12-23 15:18:47 +0000189 goto fail;
bellard5fe141f2006-04-23 17:12:42 +0000190 if (read(fd, data, ph->p_filesz) != ph->p_filesz)
ths04d4b0c2006-12-23 15:18:47 +0000191 goto fail;
bellard5fe141f2006-04-23 17:12:42 +0000192 }
193 addr = ph->p_vaddr + virt_to_phys_addend;
194
195 cpu_physical_memory_write_rom(addr, data, mem_size);
196
197 total_size += mem_size;
ths74287112007-04-01 17:56:37 +0000198 if (!low || addr < low)
199 low = addr;
200 if (!high || (addr + mem_size) > high)
201 high = addr + mem_size;
bellard5fe141f2006-04-23 17:12:42 +0000202
203 qemu_free(data);
bellard9ee3c022006-04-26 22:05:26 +0000204 data = NULL;
bellard5fe141f2006-04-23 17:12:42 +0000205 }
206 }
bellard3aee2882006-05-02 20:54:12 +0000207 qemu_free(phdr);
ths74287112007-04-01 17:56:37 +0000208 if (lowaddr)
ths82790062007-10-17 23:07:31 +0000209 *lowaddr = (uint64_t)(elf_sword)low;
ths74287112007-04-01 17:56:37 +0000210 if (highaddr)
ths82790062007-10-17 23:07:31 +0000211 *highaddr = (uint64_t)(elf_sword)high;
bellard5fe141f2006-04-23 17:12:42 +0000212 return total_size;
ths04d4b0c2006-12-23 15:18:47 +0000213 fail:
bellard9ee3c022006-04-26 22:05:26 +0000214 qemu_free(data);
bellard5fe141f2006-04-23 17:12:42 +0000215 qemu_free(phdr);
bellard5fe141f2006-04-23 17:12:42 +0000216 return -1;
217}