Rev 2745 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed
| Rev 2745 | Rev 3007 | ||
|---|---|---|---|
| Line 98... | Line 98... | ||
| 98 | 98 | ||
| 99 | /* Check if the object type is supported. */ |
99 | /* Check if the object type is supported. */ |
| 100 | if (header->e_type != ET_EXEC) |
100 | if (header->e_type != ET_EXEC) |
| 101 | return EE_UNSUPPORTED; |
101 | return EE_UNSUPPORTED; |
| 102 | 102 | ||
| - | 103 | /* Check if the ELF image starts on a page boundary */ |
|
| - | 104 | if (ALIGN_UP((uintptr_t)header, PAGE_SIZE) != (uintptr_t)header) |
|
| - | 105 | return EE_UNSUPPORTED; |
|
| - | 106 | ||
| 103 | /* Walk through all segment headers and process them. */ |
107 | /* Walk through all segment headers and process them. */ |
| 104 | for (i = 0; i < header->e_phnum; i++) { |
108 | for (i = 0; i < header->e_phnum; i++) { |
| 105 | elf_segment_header_t *seghdr; |
109 | elf_segment_header_t *seghdr; |
| 106 | 110 | ||
| 107 | seghdr = &((elf_segment_header_t *)(((uint8_t *) header) + |
111 | seghdr = &((elf_segment_header_t *)(((uint8_t *) header) + |
| Line 180... | Line 184... | ||
| 180 | int load_segment(elf_segment_header_t *entry, elf_header_t *elf, as_t *as) |
184 | int load_segment(elf_segment_header_t *entry, elf_header_t *elf, as_t *as) |
| 181 | { |
185 | { |
| 182 | as_area_t *a; |
186 | as_area_t *a; |
| 183 | int flags = 0; |
187 | int flags = 0; |
| 184 | mem_backend_data_t backend_data; |
188 | mem_backend_data_t backend_data; |
| - | 189 | uintptr_t base; |
|
| - | 190 | size_t mem_sz; |
|
| 185 | 191 | ||
| 186 | backend_data.elf = elf; |
192 | backend_data.elf = elf; |
| 187 | backend_data.segment = entry; |
193 | backend_data.segment = entry; |
| 188 | 194 | ||
| 189 | if (entry->p_align > 1) { |
195 | if (entry->p_align > 1) { |
| Line 199... | Line 205... | ||
| 199 | flags |= AS_AREA_WRITE; |
205 | flags |= AS_AREA_WRITE; |
| 200 | if (entry->p_flags & PF_R) |
206 | if (entry->p_flags & PF_R) |
| 201 | flags |= AS_AREA_READ; |
207 | flags |= AS_AREA_READ; |
| 202 | flags |= AS_AREA_CACHEABLE; |
208 | flags |= AS_AREA_CACHEABLE; |
| 203 | 209 | ||
| 204 | /* |
210 | /* |
| - | 211 | * Align vaddr down, inserting a little "gap" at the beginning. |
|
| 205 | * Check if the virtual address starts on page boundary. |
212 | * Adjust area size, so that its end remains in place. |
| 206 | */ |
213 | */ |
| 207 | if (ALIGN_UP(entry->p_vaddr, PAGE_SIZE) != entry->p_vaddr) |
214 | base = ALIGN_DOWN(entry->p_vaddr, PAGE_SIZE); |
| 208 | return EE_UNSUPPORTED; |
215 | mem_sz = entry->p_memsz + (entry->p_vaddr - base); |
| 209 | 216 | ||
| 210 | a = as_area_create(as, flags, entry->p_memsz, entry->p_vaddr, |
217 | a = as_area_create(as, flags, mem_sz, base, |
| 211 | AS_AREA_ATTR_NONE, &elf_backend, &backend_data); |
218 | AS_AREA_ATTR_NONE, &elf_backend, &backend_data); |
| 212 | if (!a) |
219 | if (!a) |
| 213 | return EE_MEMORY; |
220 | return EE_MEMORY; |
| 214 | 221 | ||
| 215 | /* |
222 | /* |