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multiboot2: Fix broken section list size calculation

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This commit is contained in:
mintsuki 2022-06-19 00:01:58 +02:00
parent 89466b9125
commit 8987bde62a
1 changed files with 5 additions and 5 deletions
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10
common/protos/multiboot2.c
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@ -26,7 +26,7 @@
static size_t get_multiboot2_info_size( static size_t get_multiboot2_info_size(
char *cmdline, char *cmdline,
size_t modules_size, size_t modules_size,
uint32_t section_hdr_size, uint32_t section_hdr_size, uint32_t section_num,
uint32_t smbios_tag_size uint32_t smbios_tag_size
) { ) {
return ALIGN_UP(sizeof(struct multiboot2_start_tag), MULTIBOOT_TAG_ALIGN) + // start return ALIGN_UP(sizeof(struct multiboot2_start_tag), MULTIBOOT_TAG_ALIGN) + // start
@ -35,7 +35,7 @@ static size_t get_multiboot2_info_size(
ALIGN_UP(sizeof(struct multiboot_tag_framebuffer), MULTIBOOT_TAG_ALIGN) + // framebuffer ALIGN_UP(sizeof(struct multiboot_tag_framebuffer), MULTIBOOT_TAG_ALIGN) + // framebuffer
ALIGN_UP(sizeof(struct multiboot_tag_new_acpi) + sizeof(struct rsdp), MULTIBOOT_TAG_ALIGN) + // new ACPI info ALIGN_UP(sizeof(struct multiboot_tag_new_acpi) + sizeof(struct rsdp), MULTIBOOT_TAG_ALIGN) + // new ACPI info
ALIGN_UP(sizeof(struct multiboot_tag_old_acpi) + 20, MULTIBOOT_TAG_ALIGN) + // old ACPI info ALIGN_UP(sizeof(struct multiboot_tag_old_acpi) + 20, MULTIBOOT_TAG_ALIGN) + // old ACPI info
ALIGN_UP(sizeof(struct multiboot_tag_elf_sections) + section_hdr_size, MULTIBOOT_TAG_ALIGN) + // ELF info ALIGN_UP(sizeof(struct multiboot_tag_elf_sections) + section_hdr_size * section_num, MULTIBOOT_TAG_ALIGN) + // ELF info
ALIGN_UP(modules_size, MULTIBOOT_TAG_ALIGN) + // modules ALIGN_UP(modules_size, MULTIBOOT_TAG_ALIGN) + // modules
ALIGN_UP(smbios_tag_size, MULTIBOOT_TAG_ALIGN) + // SMBIOS ALIGN_UP(smbios_tag_size, MULTIBOOT_TAG_ALIGN) + // SMBIOS
ALIGN_UP(sizeof(struct multiboot_tag_basic_meminfo), MULTIBOOT_TAG_ALIGN) + // basic memory info ALIGN_UP(sizeof(struct multiboot_tag_basic_meminfo), MULTIBOOT_TAG_ALIGN) + // basic memory info
@ -286,7 +286,7 @@ bool multiboot2_load(char *config, char* cmdline) {
size_t mb2_info_size = get_multiboot2_info_size( size_t mb2_info_size = get_multiboot2_info_size(
cmdline, cmdline,
modules_size, modules_size,
section_hdr_info ? section_hdr_info->section_hdr_size : 0, section_hdr_info ? section_hdr_info->section_hdr_size : 0, section_hdr_info->num,
smbios_tag_size smbios_tag_size
); );
@ -304,7 +304,7 @@ bool multiboot2_load(char *config, char* cmdline) {
panic(true, "multiboot2: Cannot return ELF file information"); panic(true, "multiboot2: Cannot return ELF file information");
} }
} else { } else {
uint32_t size = sizeof(struct multiboot_tag_elf_sections) + section_hdr_info->section_hdr_size; uint32_t size = sizeof(struct multiboot_tag_elf_sections) + section_hdr_info->section_hdr_size * section_hdr_info->num;
struct multiboot_tag_elf_sections *tag = (struct multiboot_tag_elf_sections*)(mb2_info + info_idx); struct multiboot_tag_elf_sections *tag = (struct multiboot_tag_elf_sections*)(mb2_info + info_idx);
tag->type = MULTIBOOT_TAG_TYPE_ELF_SECTIONS; tag->type = MULTIBOOT_TAG_TYPE_ELF_SECTIONS;
@ -314,7 +314,7 @@ bool multiboot2_load(char *config, char* cmdline) {
tag->entsize = section_hdr_info->section_entry_size; tag->entsize = section_hdr_info->section_entry_size;
tag->shndx = section_hdr_info->str_section_idx; tag->shndx = section_hdr_info->str_section_idx;
memcpy(tag->sections, kernel + section_hdr_info->section_offset, section_hdr_info->section_hdr_size); memcpy(tag->sections, kernel + section_hdr_info->section_offset, section_hdr_info->section_hdr_size * section_hdr_info->num);
for (size_t i = 0; i < section_hdr_info->num; i++) { for (size_t i = 0; i < section_hdr_info->num; i++) {
struct elf64_shdr *shdr = (void *)kernel + section_hdr_info->section_offset + i * section_hdr_info->section_entry_size; struct elf64_shdr *shdr = (void *)kernel + section_hdr_info->section_offset + i * section_hdr_info->section_entry_size;