diff options
| author | Clement Leger <cleger@kalray.eu> | 2020-06-12 09:10:33 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2020-06-15 16:15:05 +0200 |
| commit | 7a7cc824c7d748eb6b6821c2fcdb04074cede97b (patch) | |
| tree | a21fadd505976de6d6fa7e7ef9c3d076648dc311 /include | |
| parent | 860fbba93e53666ca46dd92dedfda43c9c426931 (diff) | |
| download | barebox-7a7cc824c7d748eb6b6821c2fcdb04074cede97b.tar.gz barebox-7a7cc824c7d748eb6b6821c2fcdb04074cede97b.tar.xz | |
common: elf: load elf directly from file
Currently, elf file must be loaded into a buffer and then passed to
elf_load_image. This requires to copy the whole elf file before booting
it. This commit allows to pass the filename directly and will allocate
data only for the elf header (elf header + program headers). This will
then be used to load the elf data from the file without copying it in an
intermediate buffer. Elf segments are first parsed into a list and are
then loaded from the file in a second time.
Signed-off-by: Clement Leger <cleger@kalray.eu>
Tested-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'include')
| -rw-r--r-- | include/elf.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/include/elf.h b/include/elf.h index 403412f3f0..f1a80a20a5 100644 --- a/include/elf.h +++ b/include/elf.h @@ -405,7 +405,8 @@ struct elf_image { u64 entry; void *low_addr; void *high_addr; - void *buf; + void *hdr_buf; + char *filename; }; static inline size_t elf_get_mem_size(struct elf_image *elf) @@ -413,7 +414,7 @@ static inline size_t elf_get_mem_size(struct elf_image *elf) return elf->high_addr - elf->low_addr; } -struct elf_image *elf_load_image(void *buf); +struct elf_image *elf_load_image(const char *filename); void elf_release_image(struct elf_image *elf); #define ELF_GET_FIELD(__s, __field, __type) \ @@ -427,6 +428,7 @@ static inline __type elf_##__s##_##__field(struct elf_image *elf, void *arg) { \ ELF_GET_FIELD(hdr, e_entry, u64) ELF_GET_FIELD(hdr, e_phnum, u16) ELF_GET_FIELD(hdr, e_phoff, u64) +ELF_GET_FIELD(hdr, e_phentsize, u16) ELF_GET_FIELD(hdr, e_type, u16) ELF_GET_FIELD(phdr, p_paddr, u64) ELF_GET_FIELD(phdr, p_filesz, u64) |