static void elf_elfsize(struct elf_loadinfo_s *loadinfo) { size_t elfsize; int i; /* Accumulate the size each section into memory that is marked SHF_ALLOC */ elfsize = 0; for (i = 0; i < loadinfo->ehdr.e_shnum; i++) { FAR Elf32_Shdr *shdr = &loadinfo->shdr[i]; /* SHF_ALLOC indicates that the section requires memory during * execution. */ if ((shdr->sh_flags & SHF_ALLOC) != 0) { elfsize += ELF_ALIGNUP(shdr->sh_size); } } /* Save the allocation size */ loadinfo->elfsize = elfsize; }
static inline int elf_loadfile(FAR struct elf_loadinfo_s *loadinfo) { FAR uint8_t *dest; int ret; int i; /* Allocate (and zero) memory for the ELF file. */ loadinfo->elfalloc = (uintptr_t)kzalloc(loadinfo->elfsize); if (!loadinfo->elfalloc) { return -ENOMEM; } /* Read each section into memory that is marked SHF_ALLOC + SHT_NOBITS */ bvdbg("Loaded sections:\n"); dest = (FAR uint8_t*)loadinfo->elfalloc; for (i = 0; i < loadinfo->ehdr.e_shnum; i++) { FAR Elf32_Shdr *shdr = &loadinfo->shdr[i]; /* SHF_ALLOC indicates that the section requires memory during * execution */ if ((shdr->sh_flags & SHF_ALLOC) == 0) { continue; } /* SHT_NOBITS indicates that there is no data in the file for the * section. */ if (shdr->sh_type != SHT_NOBITS) { /* Read the section data from sh_offset to dest */ ret = elf_read(loadinfo, dest, shdr->sh_size, shdr->sh_offset); if (ret < 0) { bdbg("Failed to read section %d: %d\n", i, ret); return ret; } } /* Update sh_addr to point to copy in memory */ bvdbg("%d. %08x->%08x\n", i, (long)shdr->sh_addr, (long)dest); shdr->sh_addr = (uintptr_t)dest; /* Setup the memory pointer for the next time through the loop */ dest += ELF_ALIGNUP(shdr->sh_size); } return OK; }
static void mod_elfsize(struct mod_loadinfo_s *loadinfo) { size_t textsize; size_t datasize; int i; /* Accumulate the size each section into memory that is marked SHF_ALLOC */ textsize = 0; datasize = 0; for (i = 0; i < loadinfo->ehdr.e_shnum; i++) { FAR Elf32_Shdr *shdr = &loadinfo->shdr[i]; /* SHF_ALLOC indicates that the section requires memory during * execution. */ if ((shdr->sh_flags & SHF_ALLOC) != 0) { /* SHF_WRITE indicates that the section address space is write- * able */ if ((shdr->sh_flags & SHF_WRITE) != 0) { datasize += ELF_ALIGNUP(shdr->sh_size); } else { textsize += ELF_ALIGNUP(shdr->sh_size); } } } /* Save the allocation size */ loadinfo->textsize = textsize; loadinfo->datasize = datasize; }
static inline int mod_loadfile(FAR struct mod_loadinfo_s *loadinfo) { FAR uint8_t *text; FAR uint8_t *data; FAR uint8_t **pptr; int ret; int i; /* Read each section into memory that is marked SHF_ALLOC + SHT_NOBITS */ svdbg("Loaded sections:\n"); text = (FAR uint8_t *)loadinfo->textalloc; data = (FAR uint8_t *)loadinfo->datastart; for (i = 0; i < loadinfo->ehdr.e_shnum; i++) { FAR Elf32_Shdr *shdr = &loadinfo->shdr[i]; /* SHF_ALLOC indicates that the section requires memory during * execution */ if ((shdr->sh_flags & SHF_ALLOC) == 0) { continue; } /* SHF_WRITE indicates that the section address space is write- * able */ if ((shdr->sh_flags & SHF_WRITE) != 0) { pptr = &data; } else { pptr = &text; } /* SHT_NOBITS indicates that there is no data in the file for the * section. */ if (shdr->sh_type != SHT_NOBITS) { /* Read the section data from sh_offset to the memory region */ ret = mod_read(loadinfo, *pptr, shdr->sh_size, shdr->sh_offset); if (ret < 0) { sdbg("ERROR: Failed to read section %d: %d\n", i, ret); return ret; } } /* If there is no data in an allocated section, then the allocated * section must be cleared. */ else { memset(*pptr, 0, shdr->sh_size); } /* Update sh_addr to point to copy in memory */ svdbg("%d. %08lx->%08lx\n", i, (unsigned long)shdr->sh_addr, (unsigned long)*pptr); shdr->sh_addr = (uintptr_t)*pptr; /* Setup the memory pointer for the next time through the loop */ *pptr += ELF_ALIGNUP(shdr->sh_size); } return OK; }
static inline int elf_loadfile(FAR struct elf_loadinfo_s *loadinfo) { FAR uint8_t *dest; int ret; int i; /* Allocate (and zero) memory for the ELF file. */ ret = elf_addrenv_alloc(loadinfo, loadinfo->elfsize); if (ret < 0) { bdbg("ERROR: elf_addrenv_alloc() failed: %d\n", ret); return ret; } /* Read each section into memory that is marked SHF_ALLOC + SHT_NOBITS */ bvdbg("Loaded sections:\n"); dest = (FAR uint8_t*)loadinfo->elfalloc; for (i = 0; i < loadinfo->ehdr.e_shnum; i++) { FAR Elf32_Shdr *shdr = &loadinfo->shdr[i]; /* SHF_ALLOC indicates that the section requires memory during * execution */ if ((shdr->sh_flags & SHF_ALLOC) == 0) { continue; } /* SHT_NOBITS indicates that there is no data in the file for the * section. */ if (shdr->sh_type != SHT_NOBITS) { /* If CONFIG_ADDRENV=y, then 'dest' lies in a virtual address space * that may not be in place now. elf_addrenv_select() will * temporarily instantiate that address space. */ #ifdef CONFIG_ADDRENV ret = elf_addrenv_select(loadinfo); if (ret < 0) { bdbg("ERROR: elf_addrenv_select() failed: %d\n", ret); return ret; } #endif /* Read the section data from sh_offset to dest */ ret = elf_read(loadinfo, dest, shdr->sh_size, shdr->sh_offset); if (ret < 0) { bdbg("Failed to read section %d: %d\n", i, ret); return ret; } /* Restore the original address environment */ #ifdef CONFIG_ADDRENV ret = elf_addrenv_restore(loadinfo); if (ret < 0) { bdbg("ERROR: elf_addrenv_restore() failed: %d\n", ret); return ret; } #endif } /* Update sh_addr to point to copy in memory */ bvdbg("%d. %08x->%08x\n", i, (long)shdr->sh_addr, (long)dest); shdr->sh_addr = (uintptr_t)dest; /* Setup the memory pointer for the next time through the loop */ dest += ELF_ALIGNUP(shdr->sh_size); } return OK; }