mirror of
https://github.com/adulau/aha.git
synced 2024-12-28 19:56:18 +00:00
b39927cf4c
Section mismatch is identified as references to .init* sections from non .init sections. And likewise references to .exit.* sections outside .exit sections. .init.* sections are discarded after a module is initialized and references to .init.* sections are oops candidates. .exit.* sections are discarded when a module is built-in and thus references to .exit are also oops candidates. The checks were possible to do using 'make buildcheck' which called the two perl scripts: reference_discarded.pl and reference_init.pl. This patch just moves the same functionality inside modpost and the scripts are then obsoleted. They will though be kept for a while so users can do double checks - but note that some .o files are skipped by the perl scripts so result is not 1:1. All credit for the concept goes to Keith Owens who implemented the original perl scrips - this patch just moves it to modpost. Compared to the perl script the implmentation in modpost will be run for each kernel build - thus catching the error much sooner, but the downside is that the individual .o file are not always identified. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
122 lines
2.7 KiB
C
122 lines
2.7 KiB
C
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <stdarg.h>
|
|
#include <string.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/mman.h>
|
|
#include <fcntl.h>
|
|
#include <unistd.h>
|
|
#include <elf.h>
|
|
|
|
#include "elfconfig.h"
|
|
|
|
#if KERNEL_ELFCLASS == ELFCLASS32
|
|
|
|
#define Elf_Ehdr Elf32_Ehdr
|
|
#define Elf_Shdr Elf32_Shdr
|
|
#define Elf_Sym Elf32_Sym
|
|
#define Elf_Addr Elf32_Addr
|
|
#define Elf_Section Elf32_Section
|
|
#define ELF_ST_BIND ELF32_ST_BIND
|
|
#define ELF_ST_TYPE ELF32_ST_TYPE
|
|
|
|
#define Elf_Rela Elf32_Rela
|
|
#define ELF_R_SYM ELF32_R_SYM
|
|
#define ELF_R_TYPE ELF32_R_TYPE
|
|
#else
|
|
|
|
#define Elf_Ehdr Elf64_Ehdr
|
|
#define Elf_Shdr Elf64_Shdr
|
|
#define Elf_Sym Elf64_Sym
|
|
#define Elf_Addr Elf64_Addr
|
|
#define Elf_Section Elf64_Section
|
|
#define ELF_ST_BIND ELF64_ST_BIND
|
|
#define ELF_ST_TYPE ELF64_ST_TYPE
|
|
|
|
#define Elf_Rela Elf64_Rela
|
|
#define ELF_R_SYM ELF64_R_SYM
|
|
#define ELF_R_TYPE ELF64_R_TYPE
|
|
#endif
|
|
|
|
#if KERNEL_ELFDATA != HOST_ELFDATA
|
|
|
|
static inline void __endian(const void *src, void *dest, unsigned int size)
|
|
{
|
|
unsigned int i;
|
|
for (i = 0; i < size; i++)
|
|
((unsigned char*)dest)[i] = ((unsigned char*)src)[size - i-1];
|
|
}
|
|
|
|
|
|
|
|
#define TO_NATIVE(x) \
|
|
({ \
|
|
typeof(x) __x; \
|
|
__endian(&(x), &(__x), sizeof(__x)); \
|
|
__x; \
|
|
})
|
|
|
|
#else /* endianness matches */
|
|
|
|
#define TO_NATIVE(x) (x)
|
|
|
|
#endif
|
|
|
|
#define NOFAIL(ptr) do_nofail((ptr), #ptr)
|
|
void *do_nofail(void *ptr, const char *expr);
|
|
|
|
struct buffer {
|
|
char *p;
|
|
int pos;
|
|
int size;
|
|
};
|
|
|
|
void __attribute__((format(printf, 2, 3)))
|
|
buf_printf(struct buffer *buf, const char *fmt, ...);
|
|
|
|
void
|
|
buf_write(struct buffer *buf, const char *s, int len);
|
|
|
|
struct module {
|
|
struct module *next;
|
|
const char *name;
|
|
struct symbol *unres;
|
|
int seen;
|
|
int skip;
|
|
int has_init;
|
|
int has_cleanup;
|
|
struct buffer dev_table_buf;
|
|
char srcversion[25];
|
|
};
|
|
|
|
struct elf_info {
|
|
unsigned long size;
|
|
Elf_Ehdr *hdr;
|
|
Elf_Shdr *sechdrs;
|
|
Elf_Sym *symtab_start;
|
|
Elf_Sym *symtab_stop;
|
|
const char *strtab;
|
|
char *modinfo;
|
|
unsigned int modinfo_len;
|
|
};
|
|
|
|
/* file2alias.c */
|
|
void handle_moddevtable(struct module *mod, struct elf_info *info,
|
|
Elf_Sym *sym, const char *symname);
|
|
void add_moddevtable(struct buffer *buf, struct module *mod);
|
|
|
|
/* sumversion.c */
|
|
void maybe_frob_rcs_version(const char *modfilename,
|
|
char *version,
|
|
void *modinfo,
|
|
unsigned long modinfo_offset);
|
|
void get_src_version(const char *modname, char sum[], unsigned sumlen);
|
|
|
|
/* from modpost.c */
|
|
void *grab_file(const char *filename, unsigned long *size);
|
|
char* get_next_line(unsigned long *pos, void *file, unsigned long size);
|
|
void release_file(void *file, unsigned long size);
|
|
|
|
void fatal(const char *fmt, ...);
|
|
void warn(const char *fmt, ...);
|