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sbtools: add helper to determine if a file is a valid ELF image

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Change-Id: Ie0e9c05569ca9b02fd36f31fd7323f02b14e1b60
This commit is contained in:
Amaury Pouly 2013-08-04 15:03:29 +02:00
parent 76446dda45
commit e4c9eaa7e8
2 changed files with 15 additions and 0 deletions
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13
utils/imxtools/sbtools/elf.c
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@ -551,6 +551,19 @@ void elf_write_file(struct elf_params_t *params, elf_write_fn_t write,
free(strtbl_content); free(strtbl_content);
} }
bool elf_guess(elf_read_fn_t read, void *user)
{
/* read header */
Elf32_Ehdr ehdr;
if(!read(user, 0, &ehdr, sizeof(ehdr)))
return false;
/* basic checks */
return ehdr.e_ident[EI_MAG0] == ELFMAG0 && ehdr.e_ident[EI_MAG1] == ELFMAG1 &&
ehdr.e_ident[EI_MAG2] == ELFMAG2 && ehdr.e_ident[EI_MAG3] == ELFMAG3 &&
ehdr.e_ehsize == sizeof(ehdr) && ehdr.e_phentsize == sizeof(Elf32_Phdr) &&
ehdr.e_shentsize == sizeof(Elf32_Shdr);
}
bool elf_read_file(struct elf_params_t *params, elf_read_fn_t read, bool elf_read_file(struct elf_params_t *params, elf_read_fn_t read,
elf_printf_fn_t printf, void *user) elf_printf_fn_t printf, void *user)
{ {

2
utils/imxtools/sbtools/elf.h
View file

@ -94,6 +94,8 @@ bool elf_get_start_addr(struct elf_params_t *params, uint32_t *addr);
int elf_get_nr_sections(struct elf_params_t *params); int elf_get_nr_sections(struct elf_params_t *params);
void elf_release(struct elf_params_t *params); void elf_release(struct elf_params_t *params);
bool elf_guess(elf_read_fn_t read, void *user);
/* standard implementation of read/write/printf functions /* standard implementation of read/write/printf functions
* with user being a FILE* pointer */ * with user being a FILE* pointer */
void elf_std_printf(void *user, bool error, const char *fmt, ...); void elf_std_printf(void *user, bool error, const char *fmt, ...);