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powerpc/vdso: Remove symbol section information in struct lib32/64_elfinfo 

The members related to the symbol section in struct lib32_elfinfo and
struct lib64_elfinfo are not used anymore, removed them.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/b779e5b7cc0354e2f87fd407fe5b02f4a8a73825.1601197618.git.christophe.leroy@csgroup.eu
This commit is contained in:
Christophe Leroy 2020-09-27 09:16:41 +00:00 committed by Michael Ellerman
parent e113f8ef1c
commit 6ed613ad57
1 changed files with 0 additions and 90 deletions
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90
arch/powerpc/kernel/vdso.c
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@ -70,17 +70,11 @@ struct vdso_arch_data *vdso_data = &vdso_data_store.data;
struct lib32_elfinfo
{
Elf32_Ehdr *hdr; /* ptr to ELF */
Elf32_Sym *dynsym; /* ptr to .dynsym section */
unsigned long dynsymsize; /* size of .dynsym section */
char *dynstr; /* ptr to .dynstr section */
};
struct lib64_elfinfo
{
Elf64_Ehdr *hdr;
Elf64_Sym *dynsym;
unsigned long dynsymsize;
char *dynstr;
};
static int vdso_mremap(const struct vm_special_mapping *sm, struct vm_area_struct *new_vma,
@ -205,59 +199,6 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
return rc;
}
#ifdef CONFIG_VDSO32
static void * __init find_section32(Elf32_Ehdr *ehdr, const char *secname,
unsigned long *size)
{
Elf32_Shdr *sechdrs;
unsigned int i;
char *secnames;
/* Grab section headers and strings so we can tell who is who */
sechdrs = (void *)ehdr + ehdr->e_shoff;
secnames = (void *)ehdr + sechdrs[ehdr->e_shstrndx].sh_offset;
/* Find the section they want */
for (i = 1; i < ehdr->e_shnum; i++) {
if (strcmp(secnames+sechdrs[i].sh_name, secname) == 0) {
if (size)
*size = sechdrs[i].sh_size;
return (void *)ehdr + sechdrs[i].sh_offset;
}
}
*size = 0;
return NULL;
}
#endif /* CONFIG_VDSO32 */
#ifdef CONFIG_PPC64
static void * __init find_section64(Elf64_Ehdr *ehdr, const char *secname,
unsigned long *size)
{
Elf64_Shdr *sechdrs;
unsigned int i;
char *secnames;
/* Grab section headers and strings so we can tell who is who */
sechdrs = (void *)ehdr + ehdr->e_shoff;
secnames = (void *)ehdr + sechdrs[ehdr->e_shstrndx].sh_offset;
/* Find the section they want */
for (i = 1; i < ehdr->e_shnum; i++) {
if (strcmp(secnames+sechdrs[i].sh_name, secname) == 0) {
if (size)
*size = sechdrs[i].sh_size;
return (void *)ehdr + sechdrs[i].sh_offset;
}
}
if (size)
*size = 0;
return NULL;
}
#endif /* CONFIG_PPC64 */
#define VDSO_DO_FIXUPS(type, value, bits, sec) do { \
void *__start = (void *)VDSO##bits##_SYMBOL(&vdso##bits##_start, sec##_start); \
void *__end = (void *)VDSO##bits##_SYMBOL(&vdso##bits##_start, sec##_end); \
@ -265,34 +206,6 @@ static void * __init find_section64(Elf64_Ehdr *ehdr, const char *secname,
do_##type##_fixups((value), __start, __end); \
} while (0)
static __init int vdso_do_find_sections(struct lib32_elfinfo *v32,
struct lib64_elfinfo *v64)
{
/*
* Locate symbol tables & text section
*/
#ifdef CONFIG_VDSO32
v32->dynsym = find_section32(v32->hdr, ".dynsym", &v32->dynsymsize);
v32->dynstr = find_section32(v32->hdr, ".dynstr", NULL);
if (v32->dynsym == NULL || v32->dynstr == NULL) {
printk(KERN_ERR "vDSO32: required symbol section not found\n");
return -1;
}
#endif
#ifdef CONFIG_PPC64
v64->dynsym = find_section64(v64->hdr, ".dynsym", &v64->dynsymsize);
v64->dynstr = find_section64(v64->hdr, ".dynstr", NULL);
if (v64->dynsym == NULL || v64->dynstr == NULL) {
printk(KERN_ERR "vDSO64: required symbol section not found\n");
return -1;
}
#endif /* CONFIG_PPC64 */
return 0;
}
static __init int vdso_fixup_features(struct lib32_elfinfo *v32,
struct lib64_elfinfo *v64)
{
@ -322,9 +235,6 @@ static __init int vdso_setup(void)
v32.hdr = vdso32_kbase;
v64.hdr = vdso64_kbase;
if (vdso_do_find_sections(&v32, &v64))
return -1;
if (vdso_fixup_features(&v32, &v64))
return -1;