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lib/elf: Panic on unresolved symbols, unless marked weak

This commit is contained in:
mintsuki 2024-06-08 23:37:35 +02:00
parent c713cd2ac1
commit 614a5b9d4d
1 changed files with 16 additions and 0 deletions
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16
common/lib/elf.c
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@ -45,6 +45,8 @@
#define BITS_LE 0x01
#define ELFCLASS64 0x02
#define SHT_RELA 0x00000004
#define SHN_UNDEF 0x00000000
#define STB_WEAK 0x00000002
#define R_X86_64_NONE 0x00000000
#define R_AARCH64_NONE 0x00000000
#define R_RISCV_NONE 0x00000000
@ -505,6 +507,13 @@ end_of_pt_segment:
#endif
{
struct elf64_sym *s = (void *)elf + symtab_offset + symtab_ent * relocation->r_symbol;
if (s->st_shndx == SHN_UNDEF) {
if ((s->st_info >> 4) == STB_WEAK) {
*ptr = 0;
break;
}
panic(true, "elf: Unresolved symbol");
}
*ptr = slide + s->st_value
#if defined (__aarch64__)
+ relocation->r_addend
@ -521,6 +530,13 @@ end_of_pt_segment:
#endif
{
struct elf64_sym *s = (void *)elf + symtab_offset + symtab_ent * relocation->r_symbol;
if (s->st_shndx == SHN_UNDEF) {
if ((s->st_info >> 4) == STB_WEAK) {
*ptr = 0;
break;
}
panic(true, "elf: Unresolved symbol");
}
*ptr = slide + s->st_value + relocation->r_addend;
break;
}