1 // SPDX-License-Identifier: GPL-2.0-only
43 …'.', 'n', 'o', 't', 'e', '.', 'g', 'n', 'u', '.', 'b', 'u', 'i', 'l', 'd', '-', 'i', 'd', 0, /* 33…
52 	Elf_Note desc;		/* descsz: size of build-id, must be multiple of 4 */
82 	uint64_t unwinding_table_size = unwinding_size - unwinding_header_size;  in jit_add_eh_frame_info()
85 	 * setup eh_frame section  in jit_add_eh_frame_info()
89 		warnx("cannot create section");  in jit_add_eh_frame_info()
90 		return -1;  in jit_add_eh_frame_info()
96 		return -1;  in jit_add_eh_frame_info()
99 	d->d_align = 8;  in jit_add_eh_frame_info()
100 	d->d_off = 0LL;  in jit_add_eh_frame_info()
101 	d->d_buf = unwinding;  in jit_add_eh_frame_info()
102 	d->d_type = ELF_T_BYTE;  in jit_add_eh_frame_info()
103 	d->d_size = unwinding_table_size;  in jit_add_eh_frame_info()
104 	d->d_version = EV_CURRENT;  in jit_add_eh_frame_info()
108 		warnx("cannot get section header");  in jit_add_eh_frame_info()
109 		return -1;  in jit_add_eh_frame_info()
112 	shdr->sh_name = 104;  in jit_add_eh_frame_info()
113 	shdr->sh_type = SHT_PROGBITS;  in jit_add_eh_frame_info()
114 	shdr->sh_addr = base_offset;  in jit_add_eh_frame_info()
115 	shdr->sh_flags = SHF_ALLOC;  in jit_add_eh_frame_info()
116 	shdr->sh_entsize = 0;  in jit_add_eh_frame_info()
119 	 * setup eh_frame_hdr section  in jit_add_eh_frame_info()
123 		warnx("cannot create section");  in jit_add_eh_frame_info()
124 		return -1;  in jit_add_eh_frame_info()
130 		return -1;  in jit_add_eh_frame_info()
133 	d->d_align = 4;  in jit_add_eh_frame_info()
134 	d->d_off = 0LL;  in jit_add_eh_frame_info()
135 	d->d_buf = unwinding + unwinding_table_size;  in jit_add_eh_frame_info()
136 	d->d_type = ELF_T_BYTE;  in jit_add_eh_frame_info()
137 	d->d_size = unwinding_header_size;  in jit_add_eh_frame_info()
138 	d->d_version = EV_CURRENT;  in jit_add_eh_frame_info()
142 		warnx("cannot get section header");  in jit_add_eh_frame_info()
143 		return -1;  in jit_add_eh_frame_info()
146 	shdr->sh_name = 90;  in jit_add_eh_frame_info()
147 	shdr->sh_type = SHT_PROGBITS;  in jit_add_eh_frame_info()
148 	shdr->sh_addr = base_offset + unwinding_table_size;  in jit_add_eh_frame_info()
149 	shdr->sh_flags = SHF_ALLOC;  in jit_add_eh_frame_info()
150 	shdr->sh_entsize = 0;  in jit_add_eh_frame_info()
158  * sym: function name (for native code - used as the symbol)
177 	int retval = -1;  in jit_write_elf()
181 		return -1;  in jit_write_elf()
199 	ehdr->e_ident[EI_DATA] = GEN_ELF_ENDIAN;  in jit_write_elf()
200 	ehdr->e_ident[EI_CLASS] = GEN_ELF_CLASS;  in jit_write_elf()
201 	ehdr->e_machine = GEN_ELF_ARCH;  in jit_write_elf()
202 	ehdr->e_type = ET_DYN;  in jit_write_elf()
203 	ehdr->e_entry = GEN_ELF_TEXT_OFFSET;  in jit_write_elf()
204 	ehdr->e_version = EV_CURRENT;  in jit_write_elf()
205 	ehdr->e_shstrndx= unwinding ? 4 : 2; /* shdr index for section name */  in jit_write_elf()
221 	 * setup text section  in jit_write_elf()
225 		warnx("cannot create section");  in jit_write_elf()
235 	d->d_align = 16;  in jit_write_elf()
236 	d->d_off = 0LL;  in jit_write_elf()
237 	d->d_buf = (void *)code;  in jit_write_elf()
238 	d->d_type = ELF_T_BYTE;  in jit_write_elf()
239 	d->d_size = csize;  in jit_write_elf()
240 	d->d_version = EV_CURRENT;  in jit_write_elf()
244 		warnx("cannot get section header");  in jit_write_elf()
248 	shdr->sh_name = 1;  in jit_write_elf()
249 	shdr->sh_type = SHT_PROGBITS;  in jit_write_elf()
250 	shdr->sh_addr = GEN_ELF_TEXT_OFFSET;  in jit_write_elf()
251 	shdr->sh_flags = SHF_EXECINSTR | SHF_ALLOC;  in jit_write_elf()
252 	shdr->sh_entsize = 0;  in jit_write_elf()
264 		retval = -1;  in jit_write_elf()
268 	 * setup section headers string table  in jit_write_elf()
272 		warnx("cannot create section");  in jit_write_elf()
282 	d->d_align = 1;  in jit_write_elf()
283 	d->d_off = 0LL;  in jit_write_elf()
284 	d->d_buf = shd_string_table;  in jit_write_elf()
285 	d->d_type = ELF_T_BYTE;  in jit_write_elf()
286 	d->d_size = sizeof(shd_string_table);  in jit_write_elf()
287 	d->d_version = EV_CURRENT;  in jit_write_elf()
291 		warnx("cannot get section header");  in jit_write_elf()
295 	shdr->sh_name = 7; /* offset of '.shstrtab' in shd_string_table */  in jit_write_elf()
296 	shdr->sh_type = SHT_STRTAB;  in jit_write_elf()
297 	shdr->sh_flags = 0;  in jit_write_elf()
298 	shdr->sh_entsize = 0;  in jit_write_elf()
301 	 * setup symtab section  in jit_write_elf()
308 		warnx("cannot create section");  in jit_write_elf()
318 	d->d_align = 8;  in jit_write_elf()
319 	d->d_off = 0LL;  in jit_write_elf()
320 	d->d_buf = symtab;  in jit_write_elf()
321 	d->d_type = ELF_T_SYM;  in jit_write_elf()
322 	d->d_size = sizeof(symtab);  in jit_write_elf()
323 	d->d_version = EV_CURRENT;  in jit_write_elf()
327 		warnx("cannot get section header");  in jit_write_elf()
331 	shdr->sh_name = 17; /* offset of '.symtab' in shd_string_table */  in jit_write_elf()
332 	shdr->sh_type = SHT_SYMTAB;  in jit_write_elf()
333 	shdr->sh_flags = 0;  in jit_write_elf()
334 	shdr->sh_entsize = sizeof(Elf_Sym);  in jit_write_elf()
335 	shdr->sh_link = unwinding ? 6 : 4; /* index of .strtab section */  in jit_write_elf()
351 		warnx("cannot create section");  in jit_write_elf()
361 	d->d_align = 1;  in jit_write_elf()
362 	d->d_off = 0LL;  in jit_write_elf()
363 	d->d_buf = strsym;  in jit_write_elf()
364 	d->d_type = ELF_T_BYTE;  in jit_write_elf()
365 	d->d_size = symlen;  in jit_write_elf()
366 	d->d_version = EV_CURRENT;  in jit_write_elf()
370 		warnx("cannot get section header");  in jit_write_elf()
374 	shdr->sh_name = 25; /* offset in shd_string_table */  in jit_write_elf()
375 	shdr->sh_type = SHT_STRTAB;  in jit_write_elf()
376 	shdr->sh_flags = 0;  in jit_write_elf()
377 	shdr->sh_entsize = 0;  in jit_write_elf()
380 	 * setup build-id section  in jit_write_elf()
384 		warnx("cannot create section");  in jit_write_elf()
395 	 * build-id generation  in jit_write_elf()
403 	d->d_align = 4;  in jit_write_elf()
404 	d->d_off = 0LL;  in jit_write_elf()
405 	d->d_buf = &bnote;  in jit_write_elf()
406 	d->d_type = ELF_T_BYTE;  in jit_write_elf()
407 	d->d_size = sizeof(bnote);  in jit_write_elf()
408 	d->d_version = EV_CURRENT;  in jit_write_elf()
412 		warnx("cannot get section header");  in jit_write_elf()
416 	shdr->sh_name = 33; /* offset in shd_string_table */  in jit_write_elf()
417 	shdr->sh_type = SHT_NOTE;  in jit_write_elf()
418 	shdr->sh_addr = 0x0;  in jit_write_elf()
419 	shdr->sh_flags = SHF_ALLOC;  in jit_write_elf()
420 	shdr->sh_size = sizeof(bnote);  in jit_write_elf()
421 	shdr->sh_entsize = 0;  in jit_write_elf()