diff --git a/util/grub-mkrawimage.c b/util/grub-mkrawimage.c index dace903a9..30608a932 100644 --- a/util/grub-mkrawimage.c +++ b/util/grub-mkrawimage.c @@ -30,6 +30,7 @@ #include #include #include +#include #include #include @@ -45,7 +46,19 @@ #define ALIGN_ADDR(x) (ALIGN_UP((x), GRUB_TARGET_SIZEOF_VOID_P)) +#ifdef GRUB_MACHINE_EFI +#define SECTION_ALIGN GRUB_PE32_SECTION_ALIGNMENT +#define VADDR_OFFSET ALIGN_UP (sizeof (struct grub_pe32_header) + 5 * sizeof (struct grub_pe32_section_table), SECTION_ALIGN) +#else #define SECTION_ALIGN 1 +#define VADDR_OFFSET 0 +#endif + +#if GRUB_TARGET_WORDSIZE == 32 +# define grub_target_to_host(val) grub_target_to_host32(val) +#elif GRUB_TARGET_WORDSIZE == 64 +# define grub_target_to_host(val) grub_target_to_host64(val) +#endif #ifdef ENABLE_LZMA #include @@ -100,13 +113,436 @@ compress_kernel (char *kernel_img, size_t kernel_size, #endif /* No lzma compression */ +#ifdef GRUB_MACHINE_EFI + +/* Relocate symbols; note that this function overwrites the symbol table. + Return the address of a start symbol. */ +static Elf_Addr +relocate_symbols (Elf_Ehdr *e, Elf_Shdr *sections, + Elf_Shdr *symtab_section, Elf_Addr *section_addresses, + Elf_Half section_entsize, Elf_Half num_sections) +{ + Elf_Word symtab_size, sym_size, num_syms; + Elf_Off symtab_offset; + Elf_Addr start_address = 0; + Elf_Sym *sym; + Elf_Word i; + Elf_Shdr *strtab_section; + const char *strtab; + + strtab_section + = (Elf_Shdr *) ((char *) sections + + (grub_target_to_host32 (symtab_section->sh_link) + * section_entsize)); + strtab = (char *) e + grub_target_to_host32 (strtab_section->sh_offset); + + symtab_size = grub_target_to_host32 (symtab_section->sh_size); + sym_size = grub_target_to_host32 (symtab_section->sh_entsize); + symtab_offset = grub_target_to_host32 (symtab_section->sh_offset); + num_syms = symtab_size / sym_size; + + for (i = 0, sym = (Elf_Sym *) ((char *) e + symtab_offset); + i < num_syms; + i++, sym = (Elf_Sym *) ((char *) sym + sym_size)) + { + Elf_Section index; + const char *name; + + name = strtab + grub_target_to_host32 (sym->st_name); + + index = grub_target_to_host16 (sym->st_shndx); + if (index == STN_ABS) + { + continue; + } + else if ((index == STN_UNDEF)) + { + if (sym->st_name) + grub_util_error ("undefined symbol %s", name); + else + continue; + } + else if (index >= num_sections) + grub_util_error ("section %d does not exist", index); + + sym->st_value = (grub_target_to_host32 (sym->st_value) + + section_addresses[index]); + grub_util_info ("locating %s at 0x%x", name, sym->st_value); + + if (! start_address) + if (strcmp (name, "_start") == 0 || strcmp (name, "start") == 0) + start_address = sym->st_value; + } + + return start_address; +} + +/* Return the address of a symbol at the index I in the section S. */ +static Elf_Addr +get_symbol_address (Elf_Ehdr *e, Elf_Shdr *s, Elf_Word i) +{ + Elf_Sym *sym; + + sym = (Elf_Sym *) ((char *) e + + grub_target_to_host32 (s->sh_offset) + + i * grub_target_to_host32 (s->sh_entsize)); + return sym->st_value; +} + +/* Return the address of a modified value. */ +static Elf_Addr * +get_target_address (Elf_Ehdr *e, Elf_Shdr *s, Elf_Addr offset) +{ + return (Elf_Addr *) ((char *) e + grub_target_to_host32 (s->sh_offset) + offset); +} + +/* Deal with relocation information. This function relocates addresses + within the virtual address space starting from 0. So only relative + addresses can be fully resolved. Absolute addresses must be relocated + again by a PE32 relocator when loaded. */ +static void +relocate_addresses (Elf_Ehdr *e, Elf_Shdr *sections, + Elf_Addr *section_addresses, + Elf_Half section_entsize, Elf_Half num_sections, + const char *strtab) +{ + Elf_Half i; + Elf_Shdr *s; + + for (i = 0, s = sections; + i < num_sections; + i++, s = (Elf_Shdr *) ((char *) s + section_entsize)) + if ((s->sh_type == grub_host_to_target32 (SHT_REL)) || + (s->sh_type == grub_host_to_target32 (SHT_RELA))) + { + Elf_Rela *r; + Elf_Word rtab_size, r_size, num_rs; + Elf_Off rtab_offset; + Elf_Shdr *symtab_section; + Elf_Word target_section_index; + Elf_Addr target_section_addr; + Elf_Shdr *target_section; + Elf_Word j; + + symtab_section = (Elf_Shdr *) ((char *) sections + + (grub_target_to_host32 (s->sh_link) + * section_entsize)); + target_section_index = grub_target_to_host32 (s->sh_info); + target_section_addr = section_addresses[target_section_index]; + target_section = (Elf_Shdr *) ((char *) sections + + (target_section_index + * section_entsize)); + + grub_util_info ("dealing with the relocation section %s for %s", + strtab + grub_target_to_host32 (s->sh_name), + strtab + grub_target_to_host32 (target_section->sh_name)); + + rtab_size = grub_target_to_host32 (s->sh_size); + r_size = grub_target_to_host32 (s->sh_entsize); + rtab_offset = grub_target_to_host32 (s->sh_offset); + num_rs = rtab_size / r_size; + + for (j = 0, r = (Elf_Rela *) ((char *) e + rtab_offset); + j < num_rs; + j++, r = (Elf_Rela *) ((char *) r + r_size)) + { + Elf_Addr info; + Elf_Addr offset; + Elf_Addr sym_addr; + Elf_Addr *target; + Elf_Addr addend; + + offset = grub_target_to_host (r->r_offset); + target = get_target_address (e, target_section, offset); + info = grub_target_to_host (r->r_info); + sym_addr = get_symbol_address (e, symtab_section, + ELF_R_SYM (info)); + + addend = (s->sh_type == grub_target_to_host32 (SHT_RELA)) ? + r->r_addend : 0; + + switch (ELF_R_TYPE (info)) + { +#if GRUB_TARGET_SIZEOF_VOID_P == 4 + case R_386_NONE: + break; + + case R_386_32: + /* This is absolute. */ + *target = grub_host_to_target32 (grub_target_to_host32 (*target) + + addend + sym_addr); + grub_util_info ("relocating an R_386_32 entry to 0x%x at the offset 0x%x", + *target, offset); + break; + + case R_386_PC32: + /* This is relative. */ + *target = grub_host_to_target32 (grub_target_to_host32 (*target) + + addend + sym_addr + - target_section_addr - offset + - VADDR_OFFSET); + grub_util_info ("relocating an R_386_PC32 entry to 0x%x at the offset 0x%x", + *target, offset); + break; + +#else + + case R_X86_64_NONE: + break; + + case R_X86_64_64: + *target = grub_host_to_target64 (grub_target_to_host64 (*target) + + addend + sym_addr); + grub_util_info ("relocating an R_X86_64_64 entry to 0x%llx at the offset 0x%llx", + *target, offset); + break; + + case R_X86_64_PC32: + { + grub_uint32_t *t32 = (grub_uint32_t *) target; + *t32 = grub_host_to_target64 (grub_target_to_host32 (*t32) + + addend + sym_addr + - target_section_addr - offset + - VADDR_OFFSET); + grub_util_info ("relocating an R_X86_64_PC32 entry to 0x%x at the offset 0x%llx", + *t32, offset); + break; + } + + case R_X86_64_32: + case R_X86_64_32S: + { + grub_uint32_t *t32 = (grub_uint32_t *) target; + *t32 = grub_host_to_target64 (grub_target_to_host32 (*t32) + + addend + sym_addr); + grub_util_info ("relocating an R_X86_64_32(S) entry to 0x%x at the offset 0x%llx", + *t32, offset); + break; + } + +#endif + default: + grub_util_error ("unknown relocation type %d", + ELF_R_TYPE (info)); + break; + } + } + } +} + +struct fixup_block_list +{ + struct fixup_block_list *next; + int state; + struct grub_pe32_fixup_block b; +}; + +/* Add a PE32's fixup entry for a relocation. Return the resulting address + after having written to the file OUT. */ +Elf_Addr +add_fixup_entry (struct fixup_block_list **cblock, grub_uint16_t type, + Elf_Addr addr, int flush, Elf_Addr current_address) +{ + struct grub_pe32_fixup_block *b; + + b = &((*cblock)->b); + + /* First, check if it is necessary to write out the current block. */ + if ((*cblock)->state) + { + if (flush || addr < b->page_rva || b->page_rva + 0x1000 <= addr) + { + grub_uint32_t size; + + if (flush) + { + /* Add as much padding as necessary to align the address + with a section boundary. */ + Elf_Addr next_address; + unsigned padding_size; + size_t index; + + next_address = current_address + b->block_size; + padding_size = ((ALIGN_UP (next_address, SECTION_ALIGN) + - next_address) + >> 1); + index = ((b->block_size - sizeof (*b)) >> 1); + grub_util_info ("adding %d padding fixup entries", padding_size); + while (padding_size--) + { + b->entries[index++] = 0; + b->block_size += 2; + } + } + else if (b->block_size & (8 - 1)) + { + /* If not aligned with a 32-bit boundary, add + a padding entry. */ + size_t index; + + grub_util_info ("adding a padding fixup entry"); + index = ((b->block_size - sizeof (*b)) >> 1); + b->entries[index] = 0; + b->block_size += 2; + } + + /* Flush it. */ + grub_util_info ("writing %d bytes of a fixup block starting at 0x%x", + b->block_size, b->page_rva); + size = b->block_size; + current_address += size; + b->page_rva = grub_host_to_target32 (b->page_rva); + b->block_size = grub_host_to_target32 (b->block_size); + (*cblock)->next = xmalloc (sizeof (**cblock) + 2 * 0x1000); + memset ((*cblock)->next, 0, sizeof (**cblock) + 2 * 0x1000); + *cblock = (*cblock)->next; + } + } + + b = &((*cblock)->b); + + if (! flush) + { + grub_uint16_t entry; + size_t index; + + /* If not allocated yet, allocate a block with enough entries. */ + if (! (*cblock)->state) + { + (*cblock)->state = 1; + + /* The spec does not mention the requirement of a Page RVA. + Here, align the address with a 4K boundary for safety. */ + b->page_rva = (addr & ~(0x1000 - 1)); + b->block_size = sizeof (*b); + } + + /* Sanity check. */ + if (b->block_size >= sizeof (*b) + 2 * 0x1000) + grub_util_error ("too many fixup entries"); + + /* Add a new entry. */ + index = ((b->block_size - sizeof (*b)) >> 1); + entry = GRUB_PE32_FIXUP_ENTRY (type, addr - b->page_rva); + b->entries[index] = grub_host_to_target16 (entry); + b->block_size += 2; + } + + return current_address; +} + +/* Make a .reloc section. */ +static Elf_Addr +make_reloc_section (Elf_Ehdr *e, void **out, + Elf_Addr *section_addresses, Elf_Shdr *sections, + Elf_Half section_entsize, Elf_Half num_sections, + const char *strtab) +{ + Elf_Half i; + Elf_Shdr *s; + struct fixup_block_list *lst, *lst0; + Elf_Addr current_address = 0; + + lst = lst0 = xmalloc (sizeof (*lst) + 2 * 0x1000); + memset (lst, 0, sizeof (*lst) + 2 * 0x1000); + + for (i = 0, s = sections; + i < num_sections; + i++, s = (Elf_Shdr *) ((char *) s + section_entsize)) + if ((s->sh_type == grub_cpu_to_le32 (SHT_REL)) || + (s->sh_type == grub_cpu_to_le32 (SHT_RELA))) + { + Elf_Rel *r; + Elf_Word rtab_size, r_size, num_rs; + Elf_Off rtab_offset; + Elf_Addr section_address; + Elf_Word j; + + grub_util_info ("translating the relocation section %s", + strtab + grub_le_to_cpu32 (s->sh_name)); + + rtab_size = grub_le_to_cpu32 (s->sh_size); + r_size = grub_le_to_cpu32 (s->sh_entsize); + rtab_offset = grub_le_to_cpu32 (s->sh_offset); + num_rs = rtab_size / r_size; + + section_address = section_addresses[grub_le_to_cpu32 (s->sh_info)]; + + for (j = 0, r = (Elf_Rel *) ((char *) e + rtab_offset); + j < num_rs; + j++, r = (Elf_Rel *) ((char *) r + r_size)) + { + Elf_Addr info; + Elf_Addr offset; + + offset = grub_le_to_cpu32 (r->r_offset); + info = grub_le_to_cpu32 (r->r_info); + + /* Necessary to relocate only absolute addresses. */ +#if GRUB_TARGET_SIZEOF_VOID_P == 4 + if (ELF_R_TYPE (info) == R_386_32) + { + Elf_Addr addr; + + addr = section_address + offset; + grub_util_info ("adding a relocation entry for 0x%x", addr); + current_address = add_fixup_entry (&lst, + GRUB_PE32_REL_BASED_HIGHLOW, + addr, 0, current_address); + } +#else + if ((ELF_R_TYPE (info) == R_X86_64_32) || + (ELF_R_TYPE (info) == R_X86_64_32S)) + { + grub_util_error ("can\'t add fixup entry for R_X86_64_32(S)"); + } + else if (ELF_R_TYPE (info) == R_X86_64_64) + { + Elf_Addr addr; + + addr = section_address + offset; + grub_util_info ("adding a relocation entry for 0x%llx", addr); + current_address = add_fixup_entry (&lst, + GRUB_PE32_REL_BASED_DIR64, + addr, + 0, current_address); + } +#endif + } + } + + current_address = add_fixup_entry (&lst, 0, 0, 1, current_address); + + { + grub_uint8_t *ptr; + ptr = *out = xmalloc (current_address); + for (lst = lst0; lst; lst = lst->next) + if (lst->state) + { + memcpy (ptr, &lst->b, grub_target_to_host32 (lst->b.block_size)); + ptr += grub_target_to_host32 (lst->b.block_size); + } + if (current_address + *out != ptr) + { + grub_util_error ("Bug detected %d != %d\n", ptr - (grub_uint8_t *) *out, + current_address); + } + } + + return current_address; +} + +#endif + /* Determine if this section is a text section. Return false if this section is not allocated. */ static int is_text_section (Elf_Shdr *s) { +#ifndef GRUB_MACHINE_EFI if (grub_target_to_host32 (s->sh_type) != SHT_PROGBITS) return 0; +#endif return ((grub_target_to_host32 (s->sh_flags) & (SHF_EXECINSTR | SHF_ALLOC)) == (SHF_EXECINSTR | SHF_ALLOC)); } @@ -117,8 +553,10 @@ is_text_section (Elf_Shdr *s) static int is_data_section (Elf_Shdr *s) { +#ifndef GRUB_MACHINE_EFI if (grub_target_to_host32 (s->sh_type) != SHT_PROGBITS) return 0; +#endif return ((grub_target_to_host32 (s->sh_flags) & (SHF_EXECINSTR | SHF_ALLOC)) == SHF_ALLOC); } @@ -151,7 +589,8 @@ locate_sections (Elf_Shdr *sections, Elf_Half section_entsize, const char *name = strtab + grub_host_to_target32 (s->sh_name); if (align) - current_address = ALIGN_UP (current_address, align); + current_address = ALIGN_UP (current_address + VADDR_OFFSET, align) + - VADDR_OFFSET; grub_util_info ("locating the section %s at 0x%x", name, current_address); @@ -159,7 +598,8 @@ locate_sections (Elf_Shdr *sections, Elf_Half section_entsize, current_address += grub_host_to_target32 (s->sh_size); } - current_address = ALIGN_UP (current_address, SECTION_ALIGN); + current_address = ALIGN_UP (current_address + VADDR_OFFSET, SECTION_ALIGN) + - VADDR_OFFSET; *exec_size = current_address; /* .data */ @@ -172,7 +612,8 @@ locate_sections (Elf_Shdr *sections, Elf_Half section_entsize, const char *name = strtab + grub_host_to_target32 (s->sh_name); if (align) - current_address = ALIGN_UP (current_address, align); + current_address = ALIGN_UP (current_address + VADDR_OFFSET, align) + - VADDR_OFFSET; grub_util_info ("locating the section %s at 0x%x", name, current_address); @@ -180,7 +621,8 @@ locate_sections (Elf_Shdr *sections, Elf_Half section_entsize, current_address += grub_host_to_target32 (s->sh_size); } - current_address = ALIGN_UP (current_address, SECTION_ALIGN); + current_address = ALIGN_UP (current_address + VADDR_OFFSET, SECTION_ALIGN) + - VADDR_OFFSET; *kernel_sz = current_address; return section_addresses; } @@ -203,19 +645,25 @@ check_elf_header (Elf_Ehdr *e, size_t size) static char * load_image (const char *kernel_path, grub_size_t *exec_size, - grub_size_t *kernel_sz, grub_size_t total_module_size) + grub_size_t *kernel_sz, grub_size_t *bss_size, + grub_size_t total_module_size, Elf_Addr *start, + void **reloc_section, grub_size_t *reloc_size) { char *kernel_img, *out_img; const char *strtab; Elf_Ehdr *e; Elf_Shdr *sections; Elf_Addr *section_addresses; + Elf_Addr *section_vaddresses; int i; Elf_Shdr *s; Elf_Half num_sections; Elf_Off section_offset; Elf_Half section_entsize; grub_size_t kernel_size; + Elf_Shdr *symtab_section; + + *start = 0; kernel_size = grub_util_get_image_size (kernel_path); kernel_img = xmalloc (kernel_size); @@ -242,15 +690,93 @@ load_image (const char *kernel_path, grub_size_t *exec_size, section_addresses = locate_sections (sections, section_entsize, num_sections, strtab, exec_size, kernel_sz); + +#ifdef GRUB_MACHINE_EFI + { + section_vaddresses = xmalloc (sizeof (*section_addresses) * num_sections); + + for (i = 0; i < num_sections; i++) + section_vaddresses[i] = section_addresses[i] + VADDR_OFFSET; + +#if 0 + { + Elf_Addr current_address = *kernel_sz; + + for (i = 0, s = sections; + i < num_sections; + i++, s = (Elf_Shdr *) ((char *) s + section_entsize)) + if (grub_target_to_host32 (s->sh_type) == SHT_NOBITS) + { + Elf_Word align = grub_host_to_target32 (s->sh_addralign); + const char *name = strtab + grub_host_to_target32 (s->sh_name); + + if (align) + current_address = ALIGN_UP (current_address + VADDR_OFFSET, align) + - VADDR_OFFSET; + + grub_util_info ("locating the section %s at 0x%x", + name, current_address); + section_vaddresses[i] = current_address + VADDR_OFFSET; + current_address += grub_host_to_target32 (s->sh_size); + } + current_address = ALIGN_UP (current_address + VADDR_OFFSET, SECTION_ALIGN) + - VADDR_OFFSET; + *bss_size = current_address - *kernel_sz; + } +#else + *bss_size = 0; +#endif + + symtab_section = NULL; + for (i = 0, s = sections; + i < num_sections; + i++, s = (Elf_Shdr *) ((char *) s + section_entsize)) + if (s->sh_type == grub_host_to_target32 (SHT_SYMTAB)) + { + symtab_section = s; + break; + } + + if (! symtab_section) + grub_util_error ("no symbol table"); + + *start = relocate_symbols (e, sections, symtab_section, + section_vaddresses, section_entsize, + num_sections); + if (*start == 0) + grub_util_error ("start symbol is not defined"); + + /* Resolve addresses in the virtual address space. */ + relocate_addresses (e, sections, section_addresses, section_entsize, + num_sections, strtab); + + *reloc_size = make_reloc_section (e, reloc_section, + section_vaddresses, sections, + section_entsize, num_sections, + strtab); + + } +#else + *bss_size = 0; + *reloc_size = 0; + *reloc_section = NULL; +#endif + out_img = xmalloc (*kernel_sz + total_module_size); for (i = 0, s = sections; i < num_sections; i++, s = (Elf_Shdr *) ((char *) s + section_entsize)) if (is_data_section (s) || is_text_section (s)) - memcpy (out_img + section_addresses[i], - kernel_img + grub_host_to_target32 (s->sh_offset), - grub_host_to_target32 (s->sh_size)); + { + if (grub_target_to_host32 (s->sh_type) == SHT_NOBITS) + memset (out_img + section_addresses[i], 0, + grub_host_to_target32 (s->sh_size)); + else + memcpy (out_img + section_addresses[i], + kernel_img + grub_host_to_target32 (s->sh_offset), + grub_host_to_target32 (s->sh_size)); + } free (kernel_img); return out_img; @@ -274,6 +800,10 @@ generate_image (const char *dir, char *prefix, FILE *out, char *mods[], size_t offset; struct grub_util_path_list *path_list, *p, *next; struct grub_module_info *modinfo; + grub_size_t bss_size; + Elf_Addr start_address; + void *rel_section; + grub_size_t reloc_size; path_list = grub_util_resolve_dependencies (dir, "moddep.lst", mods); kernel_path = grub_util_get_path (dir, "kernel.img"); @@ -307,8 +837,9 @@ generate_image (const char *dir, char *prefix, FILE *out, char *mods[], grub_util_info ("the total module size is 0x%x", total_module_size); - kernel_img = load_image (kernel_path, &exec_size, &kernel_size, - total_module_size); + kernel_img = load_image (kernel_path, &exec_size, &kernel_size, &bss_size, + total_module_size, &start_address, &rel_section, + &reloc_size); if (GRUB_KERNEL_MACHINE_PREFIX + strlen (prefix) + 1 > GRUB_KERNEL_MACHINE_DATA_END) grub_util_error (_("prefix is too long")); @@ -456,6 +987,145 @@ generate_image (const char *dir, char *prefix, FILE *out, char *mods[], free (boot_img); free (boot_path); } +#elif defined(GRUB_MACHINE_EFI) + { + void *pe_img; + size_t pe_size; + struct grub_pe32_header *header; + struct grub_pe32_coff_header *c; + struct grub_pe32_optional_header *o; + struct grub_pe32_section_table *text_section, *data_section; + struct grub_pe32_section_table *mods_section, *reloc_section; + static const grub_uint8_t stub[] = GRUB_PE32_MSDOS_STUB; + int header_size = ALIGN_UP (sizeof (struct grub_pe32_header) + + 5 * sizeof (struct grub_pe32_section_table), + SECTION_ALIGN); + int reloc_addr = ALIGN_UP (header_size + core_size, SECTION_ALIGN); + + pe_size = ALIGN_UP (reloc_addr + reloc_size, SECTION_ALIGN); + pe_img = xmalloc (reloc_addr + reloc_size); + memset (pe_img, 0, header_size); + memcpy (pe_img + header_size, core_img, core_size); + memcpy (pe_img + reloc_addr, rel_section, reloc_size); + header = pe_img; + + /* The magic. */ + memcpy (header->msdos_stub, stub, sizeof (header->msdos_stub)); + memcpy (header->signature, "PE\0\0", sizeof (header->signature)); + + /* The COFF file header. */ + c = &header->coff_header; +#if GRUB_TARGET_SIZEOF_VOID_P == 4 + c->machine = grub_host_to_target16 (GRUB_PE32_MACHINE_I386); +#else + c->machine = grub_host_to_target16 (GRUB_PE32_MACHINE_X86_64); +#endif + + c->num_sections = grub_host_to_target16 (4); + c->time = grub_host_to_target32 (time (0)); + c->optional_header_size = grub_host_to_target16 (sizeof (header->optional_header)); + c->characteristics = grub_host_to_target16 (GRUB_PE32_EXECUTABLE_IMAGE + | GRUB_PE32_LINE_NUMS_STRIPPED +#if GRUB_TARGET_SIZEOF_VOID_P == 4 + | GRUB_PE32_32BIT_MACHINE +#endif + | GRUB_PE32_LOCAL_SYMS_STRIPPED + | GRUB_PE32_DEBUG_STRIPPED); + + /* The PE Optional header. */ + o = &header->optional_header; + o->magic = grub_host_to_target16 (GRUB_PE32_PE32_MAGIC); + o->code_size = grub_host_to_target32 (exec_size); + o->data_size = grub_cpu_to_le32 (reloc_addr - exec_size); + o->bss_size = grub_cpu_to_le32 (bss_size); + o->entry_addr = grub_cpu_to_le32 (start_address); + o->code_base = grub_cpu_to_le32 (header_size); +#if GRUB_TARGET_SIZEOF_VOID_P == 4 + o->data_base = grub_host_to_target32 (header_size + exec_size); +#endif + o->image_base = 0; + o->section_alignment = grub_host_to_target32 (SECTION_ALIGN); + o->file_alignment = grub_host_to_target32 (SECTION_ALIGN); + o->image_size = grub_host_to_target32 (pe_size); + o->header_size = grub_host_to_target32 (header_size); + o->subsystem = grub_host_to_target16 (GRUB_PE32_SUBSYSTEM_EFI_APPLICATION); + + /* Do these really matter? */ + o->stack_reserve_size = grub_host_to_target32 (0x10000); + o->stack_commit_size = grub_host_to_target32 (0x10000); + o->heap_reserve_size = grub_host_to_target32 (0x10000); + o->heap_commit_size = grub_host_to_target32 (0x10000); + + o->num_data_directories = grub_host_to_target32 (GRUB_PE32_NUM_DATA_DIRECTORIES); + + o->base_relocation_table.rva = grub_host_to_target32 (reloc_addr); + o->base_relocation_table.size = grub_host_to_target32 (reloc_size); + + /* The sections. */ + text_section = (struct grub_pe32_section_table *) (header + 1); + strcpy (text_section->name, ".text"); + text_section->virtual_size = grub_cpu_to_le32 (exec_size); + text_section->virtual_address = grub_cpu_to_le32 (header_size); + text_section->raw_data_size = grub_cpu_to_le32 (exec_size); + text_section->raw_data_offset = grub_cpu_to_le32 (header_size); + text_section->characteristics = grub_cpu_to_le32 (GRUB_PE32_SCN_CNT_CODE + | GRUB_PE32_SCN_MEM_EXECUTE + | GRUB_PE32_SCN_MEM_READ + | GRUB_PE32_SCN_ALIGN_64BYTES); + + data_section = text_section + 1; + strcpy (data_section->name, ".data"); + data_section->virtual_size = grub_cpu_to_le32 (kernel_size - exec_size); + data_section->virtual_address = grub_cpu_to_le32 (header_size + exec_size); + data_section->raw_data_size = grub_cpu_to_le32 (kernel_size - exec_size); + data_section->raw_data_offset = grub_cpu_to_le32 (header_size + exec_size); + data_section->characteristics + = grub_cpu_to_le32 (GRUB_PE32_SCN_CNT_INITIALIZED_DATA + | GRUB_PE32_SCN_MEM_READ + | GRUB_PE32_SCN_MEM_WRITE + | GRUB_PE32_SCN_ALIGN_64BYTES); + +#if 0 + bss_section = data_section + 1; + strcpy (bss_section->name, ".bss"); + bss_section->virtual_size = grub_cpu_to_le32 (bss_size); + bss_section->virtual_address = grub_cpu_to_le32 (header_size + kernel_size); + bss_section->raw_data_size = 0; + bss_section->raw_data_offset = 0; + bss_section->characteristics + = grub_cpu_to_le32 (GRUB_PE32_SCN_MEM_READ + | GRUB_PE32_SCN_MEM_WRITE + | GRUB_PE32_SCN_ALIGN_64BYTES + | GRUB_PE32_SCN_CNT_INITIALIZED_DATA + | 0x80); +#endif + + mods_section = data_section + 1; + strcpy (mods_section->name, "mods"); + mods_section->virtual_size = grub_cpu_to_le32 (reloc_addr - kernel_size - header_size); + mods_section->virtual_address = grub_cpu_to_le32 (header_size + kernel_size + bss_size); + mods_section->raw_data_size = grub_cpu_to_le32 (reloc_addr - kernel_size - header_size); + mods_section->raw_data_offset = grub_cpu_to_le32 (header_size + kernel_size); + mods_section->characteristics + = grub_cpu_to_le32 (GRUB_PE32_SCN_CNT_INITIALIZED_DATA + | GRUB_PE32_SCN_MEM_READ + | GRUB_PE32_SCN_MEM_WRITE + | GRUB_PE32_SCN_ALIGN_64BYTES); + + reloc_section = mods_section + 1; + strcpy (reloc_section->name, ".reloc"); + reloc_section->virtual_size = grub_cpu_to_le32 (reloc_size); + reloc_section->virtual_address = grub_cpu_to_le32 (reloc_addr + bss_size); + reloc_section->raw_data_size = grub_cpu_to_le32 (reloc_size); + reloc_section->raw_data_offset = grub_cpu_to_le32 (reloc_addr); + reloc_section->characteristics + = grub_cpu_to_le32 (GRUB_PE32_SCN_CNT_INITIALIZED_DATA + | GRUB_PE32_SCN_MEM_DISCARDABLE + | GRUB_PE32_SCN_MEM_READ); + free (core_img); + core_img = pe_img; + core_size = pe_size; + } #elif defined(GRUB_MACHINE_QEMU) { char *rom_img;