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Merge pull request #271 from blanham/multiboot1_fix_elf32_section_loading

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multiboot1: also fix elf32 section loading
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ミンツキ 2023-05-03 03:54:46 +02:00 committed by GitHub
commit 717c60cd6a
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1 changed files with 33 additions and 13 deletions
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46
common/protos/multiboot1.c
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@ -212,22 +212,42 @@ noreturn void multiboot1_load(char *config, char *cmdline) {
memcpy(sections, kernel + section_hdr_info.section_offset, section_hdr_info.section_entry_size * section_hdr_info.num);
int bits = elf_bits(kernel);
for (size_t i = 0; i < section_hdr_info.num; i++) {
struct elf64_shdr *shdr = (void *)sections + i * section_hdr_info.section_entry_size;
if (bits == 64) {
struct elf64_shdr *shdr = (void *)sections + i * section_hdr_info.section_entry_size;
if (shdr->sh_addr != 0 || shdr->sh_size == 0) {
continue;
if (shdr->sh_addr != 0 || shdr->sh_size == 0) {
continue;
}
uint64_t section = (uint64_t)-1; /* no target preference, use top */
if (!elsewhere_append(true /* flexible target */,
ranges, &ranges_count,
kernel + shdr->sh_offset, &section, shdr->sh_size)) {
panic(true, "multiboot1: Cannot allocate elf sections");
}
shdr->sh_addr = section;
} else {
struct elf32_shdr *shdr = (void *)sections + i * section_hdr_info.section_entry_size;
if (shdr->sh_addr != 0 || shdr->sh_size == 0) {
continue;
}
uint64_t section = (uint64_t)-1; /* no target preference, use top */
if (!elsewhere_append(true /* flexible target */,
ranges, &ranges_count,
kernel + shdr->sh_offset, &section, shdr->sh_size)) {
panic(true, "multiboot1: Cannot allocate elf sections");
}
shdr->sh_addr = section;
}
uint64_t section = (uint64_t)-1; /* no target preference, use top */
if (!elsewhere_append(true /* flexible target */,
ranges, &ranges_count,
kernel + shdr->sh_offset, &section, shdr->sh_size)) {
panic(true, "multiboot1: Cannot allocate elf sections");
}
shdr->sh_addr = section;
}
multiboot1_info->flags |= (1 << 5);