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WSL2-Linux-Kernel
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Revert "kbuild: make better section mismatch reports on i386, arm and mips" 

This reverts commit f892b7d480, which
totally broke the build on x86 with CONFIG_RELOCATABLE (which, as far as
I can tell, is the only case where it should even matter!) due to a
SIGSEGV in modpost.

Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Linus Torvalds 2007-05-21 18:41:17 -07:00
Родитель d6f2fe98eb
Коммит efa5bf1dd2
2 изменённых файлов: 0 добавлений и 82 удалений
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79
scripts/mod/modpost.c
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@ -384,7 +384,6 @@ static int parse_elf(struct elf_info *info, const char *filename)
sechdrs[i].sh_size = TO_NATIVE(sechdrs[i].sh_size);
sechdrs[i].sh_link = TO_NATIVE(sechdrs[i].sh_link);
sechdrs[i].sh_name = TO_NATIVE(sechdrs[i].sh_name);
sechdrs[i].sh_info = TO_NATIVE(sechdrs[i].sh_info);
}
/* Find symbol table. */
for (i = 1; i < hdr->e_shnum; i++) {
@ -754,8 +753,6 @@ static Elf_Sym *find_elf_symbol(struct elf_info *elf, Elf_Addr addr,
for (sym = elf->symtab_start; sym < elf->symtab_stop; sym++) {
if (sym->st_shndx != relsym->st_shndx)
continue;
if (ELF_ST_TYPE(sym->st_info) == STT_SECTION)
continue;
if (sym->st_value == addr)
return sym;
}
@ -898,68 +895,6 @@ static void warn_sec_mismatch(const char *modname, const char *fromsec,
}
}
static void addend_386_rel(struct elf_info *elf, int section, Elf_Rela *r)
{
Elf_Shdr *sechdrs = elf->sechdrs;
unsigned int r_typ;
unsigned int *location;
r_typ = ELF_R_TYPE(r->r_info);
location = (void *)elf->hdr +
sechdrs[sechdrs[section].sh_info].sh_offset + r->r_offset;
switch (r_typ) {
case R_386_32:
r->r_addend = TO_NATIVE(*location);
break;
case R_386_PC32:
r->r_addend = TO_NATIVE(*location) + 4;
break;
}
}
static void addend_arm_rel(struct elf_info *elf, int section, Elf_Rela *r)
{
Elf_Shdr *sechdrs = elf->sechdrs;
unsigned int r_typ;
unsigned int *location;
r_typ = ELF_R_TYPE(r->r_info);
location = (void *)elf->hdr +
sechdrs[sechdrs[section].sh_info].sh_offset + r->r_offset;
switch (r_typ) {
case R_ARM_ABS32:
r->r_addend = TO_NATIVE(*location);
break;
case R_ARM_PC24:
r->r_addend = ((TO_NATIVE(*location) & 0x00ffffff) << 2) + 8;
break;
}
}
static int addend_mips_rel(struct elf_info *elf, int section, Elf_Rela *r)
{
Elf_Shdr *sechdrs = elf->sechdrs;
unsigned int r_typ;
unsigned int *location;
unsigned int inst;
r_typ = ELF_R_TYPE(r->r_info);
if (r_typ == R_MIPS_HI16)
return 1; /* skip this */
location = (void *)elf->hdr +
sechdrs[sechdrs[section].sh_info].sh_offset + r->r_offset;
inst = TO_NATIVE(*location);
switch (r_typ) {
case R_MIPS_LO16:
r->r_addend = ((inst & 0xffff) ^ 0x8000) - 0x8000;
break;
case R_MIPS_26:
r->r_addend = (inst & 0x03ffffff) << 2;
break;
}
return 0;
}
/**
* A module includes a number of sections that are discarded
* either when loaded or when used as built-in.
@ -1003,11 +938,8 @@ static void check_sec_ref(struct module *mod, const char *modname,
r.r_offset = TO_NATIVE(rela->r_offset);
#if KERNEL_ELFCLASS == ELFCLASS64
if (hdr->e_machine == EM_MIPS) {
unsigned int r_typ;
r_sym = ELF64_MIPS_R_SYM(rela->r_info);
r_sym = TO_NATIVE(r_sym);
r_typ = ELF64_MIPS_R_TYPE(rela->r_info);
r.r_info = ELF64_R_INFO(r_sym, r_typ);
} else {
r.r_info = TO_NATIVE(rela->r_info);
r_sym = ELF_R_SYM(r.r_info);
@ -1040,11 +972,8 @@ static void check_sec_ref(struct module *mod, const char *modname,
r.r_offset = TO_NATIVE(rel->r_offset);
#if KERNEL_ELFCLASS == ELFCLASS64
if (hdr->e_machine == EM_MIPS) {
unsigned int r_typ;
r_sym = ELF64_MIPS_R_SYM(rel->r_info);
r_sym = TO_NATIVE(r_sym);
r_typ = ELF64_MIPS_R_TYPE(rel->r_info);
r.r_info = ELF64_R_INFO(r_sym, r_typ);
} else {
r.r_info = TO_NATIVE(rel->r_info);
r_sym = ELF_R_SYM(r.r_info);
@ -1054,14 +983,6 @@ static void check_sec_ref(struct module *mod, const char *modname,
r_sym = ELF_R_SYM(r.r_info);
#endif
r.r_addend = 0;
if (hdr->e_machine == EM_386)
addend_386_rel(elf, i, &r);
else if (hdr->e_machine == EM_ARM)
addend_arm_rel(elf, i, &r);
else if (hdr->e_machine == EM_MIPS) {
if (addend_mips_rel(elf, i, &r))
continue;
}
sym = elf->symtab_start + r_sym;
/* Skip special sections */
if (sym->st_shndx >= SHN_LORESERVE)

3
scripts/mod/modpost.h
Просмотреть файл

@ -60,9 +60,6 @@ typedef union
#define ELF64_MIPS_R_SYM(i) \
((__extension__ (_Elf64_Mips_R_Info_union)(i)).r_info_fields.r_sym)
#define ELF64_MIPS_R_TYPE(i) \
((__extension__ (_Elf64_Mips_R_Info_union)(i)).r_info_fields.r_type1)
#if KERNEL_ELFDATA != HOST_ELFDATA
static inline void __endian(const void *src, void *dest, unsigned int size)