mirror of
https://github.com/torvalds/linux.git
synced 2024-12-27 13:22:23 +00:00
c080128b6f
Drop 'and' which looks like unnecessary.
Fixes: 73516a3358 ("remoteproc: Add elf helpers to access elf64 and elf32 fields")
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Link: https://lore.kernel.org/r/20210706142156.952794-1-aisheng.dong@nxp.com
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
123 lines
3.4 KiB
C
123 lines
3.4 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 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(hdr, e_shentsize, 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_type, u32)
|
|
ELF_GEN_FIELD_GET_SET(shdr, sh_flags, u32)
|
|
ELF_GEN_FIELD_GET_SET(shdr, sh_entsize, u16)
|
|
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)
|
|
|
|
static inline unsigned int elf_strtbl_add(const char *name, void *ehdr, u8 class, size_t *index)
|
|
{
|
|
u16 shstrndx = elf_hdr_get_e_shstrndx(class, ehdr);
|
|
void *shdr;
|
|
char *strtab;
|
|
size_t idx, ret;
|
|
|
|
shdr = ehdr + elf_size_of_hdr(class) + shstrndx * elf_size_of_shdr(class);
|
|
strtab = ehdr + elf_shdr_get_sh_offset(class, shdr);
|
|
idx = index ? *index : 0;
|
|
if (!strtab || !name)
|
|
return 0;
|
|
|
|
ret = idx;
|
|
strcpy((strtab + idx), name);
|
|
idx += strlen(name) + 1;
|
|
if (index)
|
|
*index = idx;
|
|
|
|
return ret;
|
|
}
|
|
|
|
#endif /* REMOTEPROC_ELF_LOADER_H */
|