1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __GENELF_H__
3 #define __GENELF_H__
4 
5 #include <linux/math.h>
6 
7 /* genelf.c */
8 int jit_write_elf(int fd, uint64_t code_addr, const char *sym,
9 		  const void *code, int csize, void *debug, int nr_debug_entries,
10 		  void *unwinding, uint64_t unwinding_header_size, uint64_t unwinding_size);
11 #ifdef HAVE_DWARF_SUPPORT
12 /* genelf_debug.c */
13 int jit_add_debug_info(Elf *e, uint64_t code_addr, void *debug, int nr_debug_entries);
14 #endif
15 
16 #if   defined(__arm__)
17 #define GEN_ELF_ARCH	EM_ARM
18 #define GEN_ELF_CLASS	ELFCLASS32
19 #elif defined(__aarch64__)
20 #define GEN_ELF_ARCH	EM_AARCH64
21 #define GEN_ELF_CLASS	ELFCLASS64
22 #elif defined(__x86_64__)
23 #define GEN_ELF_ARCH	EM_X86_64
24 #define GEN_ELF_CLASS	ELFCLASS64
25 #elif defined(__i386__)
26 #define GEN_ELF_ARCH	EM_386
27 #define GEN_ELF_CLASS	ELFCLASS32
28 #elif defined(__powerpc64__)
29 #define GEN_ELF_ARCH	EM_PPC64
30 #define GEN_ELF_CLASS	ELFCLASS64
31 #elif defined(__powerpc__)
32 #define GEN_ELF_ARCH	EM_PPC
33 #define GEN_ELF_CLASS	ELFCLASS32
34 #elif defined(__sparc__) && defined(__arch64__)
35 #define GEN_ELF_ARCH	EM_SPARCV9
36 #define GEN_ELF_CLASS	ELFCLASS64
37 #elif defined(__sparc__)
38 #define GEN_ELF_ARCH	EM_SPARC
39 #define GEN_ELF_CLASS	ELFCLASS32
40 #elif defined(__s390x__)
41 #define GEN_ELF_ARCH	EM_S390
42 #define GEN_ELF_CLASS	ELFCLASS64
43 #elif defined(__riscv) && __riscv_xlen == 64
44 #define GEN_ELF_ARCH	EM_RISCV
45 #define GEN_ELF_CLASS	ELFCLASS64
46 #else
47 #error "unsupported architecture"
48 #endif
49 
50 #if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
51 #define GEN_ELF_ENDIAN	ELFDATA2MSB
52 #else
53 #define GEN_ELF_ENDIAN	ELFDATA2LSB
54 #endif
55 
56 #if GEN_ELF_CLASS == ELFCLASS64
57 #define elf_newehdr	elf64_newehdr
58 #define elf_newphdr	elf64_newphdr
59 #define elf_getshdr	elf64_getshdr
60 #define Elf_Ehdr	Elf64_Ehdr
61 #define Elf_Phdr	Elf64_Phdr
62 #define Elf_Shdr	Elf64_Shdr
63 #define Elf_Sym		Elf64_Sym
64 #define ELF_ST_TYPE(a)	ELF64_ST_TYPE(a)
65 #define ELF_ST_BIND(a)	ELF64_ST_BIND(a)
66 #define ELF_ST_VIS(a)	ELF64_ST_VISIBILITY(a)
67 #else
68 #define elf_newehdr	elf32_newehdr
69 #define elf_newphdr	elf32_newphdr
70 #define elf_getshdr	elf32_getshdr
71 #define Elf_Ehdr	Elf32_Ehdr
72 #define Elf_Phdr	Elf32_Phdr
73 #define Elf_Shdr	Elf32_Shdr
74 #define Elf_Sym		Elf32_Sym
75 #define ELF_ST_TYPE(a)	ELF32_ST_TYPE(a)
76 #define ELF_ST_BIND(a)	ELF32_ST_BIND(a)
77 #define ELF_ST_VIS(a)	ELF32_ST_VISIBILITY(a)
78 #endif
79 
80 /* The .text section is directly after the ELF header */
81 #define GEN_ELF_TEXT_OFFSET round_up(sizeof(Elf_Ehdr) + sizeof(Elf_Phdr), 16)
82 
83 #endif
84