* Relocate PT_LOAD segements of kernel ELF image to their respective * virtual addresses and return entry point */
| 102 | * virtual addresses and return entry point |
| 103 | */ |
| 104 | void * |
| 105 | load_kernel(void * kstart) |
| 106 | { |
| 107 | #if ELFSIZE == 64 |
| 108 | Elf64_Ehdr *eh; |
| 109 | Elf64_Phdr phdr[64] /* XXX */; |
| 110 | Elf64_Shdr shdr[64] /* XXX */; |
| 111 | #else |
| 112 | Elf32_Ehdr *eh; |
| 113 | Elf32_Phdr phdr[64] /* XXX */; |
| 114 | Elf32_Shdr shdr[64] /* XXX */; |
| 115 | #endif |
| 116 | int i, j; |
| 117 | void *entry_point; |
| 118 | vm_offset_t loadend = 0; |
| 119 | intptr_t lastaddr; |
| 120 | int symtabindex = -1; |
| 121 | int symstrindex = -1; |
| 122 | Elf_Size tmp; |
| 123 | |
| 124 | #if ELFSIZE == 64 |
| 125 | eh = (Elf64_Ehdr *)kstart; |
| 126 | #else |
| 127 | eh = (Elf32_Ehdr *)kstart; |
| 128 | #endif |
| 129 | entry_point = mkptr(eh->e_entry); |
| 130 | memcpy(phdr, (void *)(kstart + eh->e_phoff), |
| 131 | eh->e_phnum * sizeof(phdr[0])); |
| 132 | |
| 133 | memcpy(shdr, (void *)(kstart + eh->e_shoff), |
| 134 | sizeof(*shdr) * eh->e_shnum); |
| 135 | |
| 136 | if (eh->e_shnum * eh->e_shentsize != 0 && eh->e_shoff != 0) { |
| 137 | for (i = 0; i < eh->e_shnum; i++) { |
| 138 | if (shdr[i].sh_type == SHT_SYMTAB) { |
| 139 | /* |
| 140 | * XXX: check if .symtab is in PT_LOAD? |
| 141 | */ |
| 142 | if (shdr[i].sh_offset != 0 && |
| 143 | shdr[i].sh_size != 0) { |
| 144 | symtabindex = i; |
| 145 | symstrindex = shdr[i].sh_link; |
| 146 | } |
| 147 | } |
| 148 | } |
| 149 | } |
| 150 | |
| 151 | /* |
| 152 | * Copy loadable segments |
| 153 | */ |
| 154 | for (i = 0; i < eh->e_phnum; i++) { |
| 155 | volatile char c; |
| 156 | |
| 157 | if (phdr[i].p_type != PT_LOAD) |
| 158 | continue; |
| 159 | |
| 160 | memcpy(mkptr(phdr[i].p_vaddr), |
| 161 | (void*)(kstart + phdr[i].p_offset), phdr[i].p_filesz); |