mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-21 11:44:01 +08:00
73516a3358
elf32 and elf64 mainly differ by their types. In order to avoid copy/pasting the whole loader code, generate static inline functions which will access values according to the elf class. It allows to keep a common loader basis. In order to accommodate both elf types sizes, the maximum size for a elf header member is chosen using the maximum value of the field for both elf class. Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Clement Leger <cleger@kalray.eu> Link: https://lore.kernel.org/r/20200302093902.27849-5-cleger@kalray.eu Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
97 lines
2.7 KiB
C
97 lines
2.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Remote processor elf helpers defines
|
|
*
|
|
* Copyright (C) 2020 Kalray, Inc.
|
|
*/
|
|
|
|
#ifndef REMOTEPROC_ELF_LOADER_H
|
|
#define REMOTEPROC_ELF_LOADER_H
|
|
|
|
#include <linux/elf.h>
|
|
#include <linux/types.h>
|
|
|
|
/**
|
|
* fw_elf_get_class - Get elf class
|
|
* @fw: the ELF firmware image
|
|
*
|
|
* Note that we use and elf32_hdr to access the class since the start of the
|
|
* struct is the same for both elf class
|
|
*
|
|
* Return: elf class of the firmware
|
|
*/
|
|
static inline u8 fw_elf_get_class(const struct firmware *fw)
|
|
{
|
|
struct elf32_hdr *ehdr = (struct elf32_hdr *)fw->data;
|
|
|
|
return ehdr->e_ident[EI_CLASS];
|
|
}
|
|
|
|
static inline void elf_hdr_init_ident(struct elf32_hdr *hdr, u8 class)
|
|
{
|
|
memcpy(hdr->e_ident, ELFMAG, SELFMAG);
|
|
hdr->e_ident[EI_CLASS] = class;
|
|
hdr->e_ident[EI_DATA] = ELFDATA2LSB;
|
|
hdr->e_ident[EI_VERSION] = EV_CURRENT;
|
|
hdr->e_ident[EI_OSABI] = ELFOSABI_NONE;
|
|
}
|
|
|
|
/* Generate getter and setter for a specific elf struct/field */
|
|
#define ELF_GEN_FIELD_GET_SET(__s, __field, __type) \
|
|
static inline __type elf_##__s##_get_##__field(u8 class, const void *arg) \
|
|
{ \
|
|
if (class == ELFCLASS32) \
|
|
return (__type) ((const struct elf32_##__s *) arg)->__field; \
|
|
else \
|
|
return (__type) ((const struct elf64_##__s *) arg)->__field; \
|
|
} \
|
|
static inline void elf_##__s##_set_##__field(u8 class, void *arg, \
|
|
__type value) \
|
|
{ \
|
|
if (class == ELFCLASS32) \
|
|
((struct elf32_##__s *) arg)->__field = (__type) value; \
|
|
else \
|
|
((struct elf64_##__s *) arg)->__field = (__type) value; \
|
|
}
|
|
|
|
ELF_GEN_FIELD_GET_SET(hdr, e_entry, u64)
|
|
ELF_GEN_FIELD_GET_SET(hdr, e_phnum, u16)
|
|
ELF_GEN_FIELD_GET_SET(hdr, e_shnum, u16)
|
|
ELF_GEN_FIELD_GET_SET(hdr, e_phoff, u64)
|
|
ELF_GEN_FIELD_GET_SET(hdr, e_shoff, u64)
|
|
ELF_GEN_FIELD_GET_SET(hdr, e_shstrndx, u16)
|
|
ELF_GEN_FIELD_GET_SET(hdr, e_machine, u16)
|
|
ELF_GEN_FIELD_GET_SET(hdr, e_type, u16)
|
|
ELF_GEN_FIELD_GET_SET(hdr, e_version, u32)
|
|
ELF_GEN_FIELD_GET_SET(hdr, e_ehsize, u32)
|
|
ELF_GEN_FIELD_GET_SET(hdr, e_phentsize, u16)
|
|
|
|
ELF_GEN_FIELD_GET_SET(phdr, p_paddr, u64)
|
|
ELF_GEN_FIELD_GET_SET(phdr, p_vaddr, u64)
|
|
ELF_GEN_FIELD_GET_SET(phdr, p_filesz, u64)
|
|
ELF_GEN_FIELD_GET_SET(phdr, p_memsz, u64)
|
|
ELF_GEN_FIELD_GET_SET(phdr, p_type, u32)
|
|
ELF_GEN_FIELD_GET_SET(phdr, p_offset, u64)
|
|
ELF_GEN_FIELD_GET_SET(phdr, p_flags, u32)
|
|
ELF_GEN_FIELD_GET_SET(phdr, p_align, u64)
|
|
|
|
ELF_GEN_FIELD_GET_SET(shdr, sh_size, u64)
|
|
ELF_GEN_FIELD_GET_SET(shdr, sh_offset, u64)
|
|
ELF_GEN_FIELD_GET_SET(shdr, sh_name, u32)
|
|
ELF_GEN_FIELD_GET_SET(shdr, sh_addr, u64)
|
|
|
|
#define ELF_STRUCT_SIZE(__s) \
|
|
static inline unsigned long elf_size_of_##__s(u8 class) \
|
|
{ \
|
|
if (class == ELFCLASS32)\
|
|
return sizeof(struct elf32_##__s); \
|
|
else \
|
|
return sizeof(struct elf64_##__s); \
|
|
}
|
|
|
|
ELF_STRUCT_SIZE(shdr)
|
|
ELF_STRUCT_SIZE(phdr)
|
|
ELF_STRUCT_SIZE(hdr)
|
|
|
|
#endif /* REMOTEPROC_ELF_LOADER_H */
|