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Fix typo in comment.
[mirror_qemu.git] / dyngen.c
CommitLineData
7d13299d
FB		 1/*
2 * Generic Dynamic compiler generator
5fafdf24 3 *
7d13299d
FB		 4 * Copyright (c) 2003 Fabrice Bellard
5 *
67b915a5
FB		 6 * The COFF object format support was extracted from Kazu's QEMU port
7 * to Win32.
8 *
82eec0a1
FB		 9 * Mach-O Support by Matt Reda and Pierre d'Herbemont
10 *
7d13299d
FB		 11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 */
367e86e8
FB		 25#include <stdlib.h>
26#include <stdio.h>
04369ff2 27#include <string.h>
367e86e8
FB		 28#include <stdarg.h>
29#include <inttypes.h>
367e86e8
FB		 30#include <unistd.h>
31#include <fcntl.h>
32
abcd5da7 33#include "config-host.h"
ce11fedc 34
11d9f695
FB		 35/* NOTE: we test CONFIG_WIN32 instead of _WIN32 to enabled cross
36 compilation */
37#if defined(CONFIG_WIN32)
67b915a5 38#define CONFIG_FORMAT_COFF
82eec0a1
FB		 39#elif defined(CONFIG_DARWIN)
40#define CONFIG_FORMAT_MACH
67b915a5
FB		 41#else
42#define CONFIG_FORMAT_ELF
43#endif
44
45#ifdef CONFIG_FORMAT_ELF
46
ce11fedc
FB		 47/* elf format definitions. We use these macros to test the CPU to
48 allow cross compilation (this tool must be ran on the build
49 platform) */
50#if defined(HOST_I386)
51
52#define ELF_CLASS ELFCLASS32
53#define ELF_ARCH EM_386
54#define elf_check_arch(x) ( ((x) == EM_386) || ((x) == EM_486) )
55#undef ELF_USES_RELOCA
56
c4687878 57#elif defined(HOST_X86_64)
bc51c5c9
FB		 58
59#define ELF_CLASS ELFCLASS64
60#define ELF_ARCH EM_X86_64
61#define elf_check_arch(x) ((x) == EM_X86_64)
62#define ELF_USES_RELOCA
63
ce11fedc
FB		 64#elif defined(HOST_PPC)
65
66#define ELF_CLASS ELFCLASS32
67#define ELF_ARCH EM_PPC
68#define elf_check_arch(x) ((x) == EM_PPC)
69#define ELF_USES_RELOCA
70
71#elif defined(HOST_S390)
72
73#define ELF_CLASS ELFCLASS32
74#define ELF_ARCH EM_S390
75#define elf_check_arch(x) ((x) == EM_S390)
76#define ELF_USES_RELOCA
367e86e8 77
ce11fedc
FB		 78#elif defined(HOST_ALPHA)
79
80#define ELF_CLASS ELFCLASS64
81#define ELF_ARCH EM_ALPHA
82#define elf_check_arch(x) ((x) == EM_ALPHA)
83#define ELF_USES_RELOCA
84
efdea7bf
FB		 85#elif defined(HOST_IA64)
86
87#define ELF_CLASS ELFCLASS64
88#define ELF_ARCH EM_IA_64
89#define elf_check_arch(x) ((x) == EM_IA_64)
90#define ELF_USES_RELOCA
91
d014c98c
FB		 92#elif defined(HOST_SPARC)
93
94#define ELF_CLASS ELFCLASS32
95#define ELF_ARCH EM_SPARC
96#define elf_check_arch(x) ((x) == EM_SPARC || (x) == EM_SPARC32PLUS)
97#define ELF_USES_RELOCA
98
99#elif defined(HOST_SPARC64)
100
101#define ELF_CLASS ELFCLASS64
102#define ELF_ARCH EM_SPARCV9
103#define elf_check_arch(x) ((x) == EM_SPARCV9)
104#define ELF_USES_RELOCA
105
ff1f20a3
FB		 106#elif defined(HOST_ARM)
107
108#define ELF_CLASS ELFCLASS32
109#define ELF_ARCH EM_ARM
110#define elf_check_arch(x) ((x) == EM_ARM)
111#define ELF_USES_RELOC
112
38e584a0
FB		 113#elif defined(HOST_M68K)
114
115#define ELF_CLASS ELFCLASS32
116#define ELF_ARCH EM_68K
117#define elf_check_arch(x) ((x) == EM_68K)
118#define ELF_USES_RELOCA
119
f54b3f92
AJ		 120#elif defined(HOST_HPPA)
121
122#define ELF_CLASS ELFCLASS32
123#define ELF_ARCH EM_PARISC
124#define elf_check_arch(x) ((x) == EM_PARISC)
125#define ELF_USES_RELOCA
126
c4b89d18
TS		 127#elif defined(HOST_MIPS)
128
129#define ELF_CLASS ELFCLASS32
130#define ELF_ARCH EM_MIPS
131#define elf_check_arch(x) ((x) == EM_MIPS)
132#define ELF_USES_RELOC
133
9617efe8
TS		 134#elif defined(HOST_MIPS64)
135
136/* Assume n32 ABI here, which is ELF32. */
137#define ELF_CLASS ELFCLASS32
138#define ELF_ARCH EM_MIPS
139#define elf_check_arch(x) ((x) == EM_MIPS)
140#define ELF_USES_RELOCA
141
ce11fedc
FB		 142#else
143#error unsupported CPU - please update the code
144#endif
145
efdea7bf
FB		 146#include "elf.h"
147
ce11fedc
FB		 148#if ELF_CLASS == ELFCLASS32
149typedef int32_t host_long;
150typedef uint32_t host_ulong;
efdea7bf 151#define swabls(x) swab32s(x)
a86c8f29 152#define swablss(x) swab32ss(x)
ce11fedc
FB		 153#else
154typedef int64_t host_long;
155typedef uint64_t host_ulong;
efdea7bf 156#define swabls(x) swab64s(x)
a86c8f29 157#define swablss(x) swab64ss(x)
fb3e5849
FB		 158#endif
159
fe319756
FB		 160#ifdef ELF_USES_RELOCA
161#define SHT_RELOC SHT_RELA
162#else
163#define SHT_RELOC SHT_REL
164#endif
165
67b915a5
FB		 166#define EXE_RELOC ELF_RELOC
167#define EXE_SYM ElfW(Sym)
168
169#endif /* CONFIG_FORMAT_ELF */
170
171#ifdef CONFIG_FORMAT_COFF
172
67b915a5
FB		 173typedef int32_t host_long;
174typedef uint32_t host_ulong;
175
7a2d6d96
PB		 176#include "a.out.h"
177
67b915a5
FB		 178#define FILENAMELEN 256
179
180typedef struct coff_sym {
181 struct external_syment *st_syment;
182 char st_name[FILENAMELEN];
183 uint32_t st_value;
184 int st_size;
185 uint8_t st_type;
186 uint8_t st_shndx;
187} coff_Sym;
188
189typedef struct coff_rel {
190 struct external_reloc *r_reloc;
191 int r_offset;
192 uint8_t r_type;
193} coff_Rel;
194
195#define EXE_RELOC struct coff_rel
196#define EXE_SYM struct coff_sym
197
198#endif /* CONFIG_FORMAT_COFF */
199
82eec0a1
FB		 200#ifdef CONFIG_FORMAT_MACH
201
202#include <mach-o/loader.h>
203#include <mach-o/nlist.h>
204#include <mach-o/reloc.h>
205#include <mach-o/ppc/reloc.h>
206
207# define check_mach_header(x) (x.magic == MH_MAGIC)
208typedef int32_t host_long;
209typedef uint32_t host_ulong;
210
211struct nlist_extended
212{
213 union {
5fafdf24
TS		 214 char *n_name;
215 long n_strx;
82eec0a1 216 } n_un;
5fafdf24
TS		 217 unsigned char n_type;
218 unsigned char n_sect;
82eec0a1
FB		 219 short st_desc;
220 unsigned long st_value;
221 unsigned long st_size;
222};
223
224#define EXE_RELOC struct relocation_info
225#define EXE_SYM struct nlist_extended
226
227#endif /* CONFIG_FORMAT_MACH */
228
abcd5da7 229#include "bswap.h"
ce11fedc 230
d219f7e7
FB		 231enum {
232 OUT_GEN_OP,
233 OUT_CODE,
234 OUT_INDEX_OP,
235};
236
367e86e8 237/* all dynamically generated functions begin with this code */
dc99065b 238#define OP_PREFIX "op_"
367e86e8 239
67b915a5
FB		 240int do_swap;
241
9596ebb7 242static void __attribute__((noreturn)) __attribute__((format (printf, 1, 2))) error(const char *fmt, ...)
367e86e8 243{
67b915a5
FB		 244 va_list ap;
245 va_start(ap, fmt);
246 fprintf(stderr, "dyngen: ");
247 vfprintf(stderr, fmt, ap);
248 fprintf(stderr, "\n");
249 va_end(ap);
250 exit(1);
251}
367e86e8 252
9596ebb7 253static void *load_data(int fd, long offset, unsigned int size)
67b915a5
FB		 254{
255 char *data;
256
257 data = malloc(size);
258 if (!data)
259 return NULL;
260 lseek(fd, offset, SEEK_SET);
261 if (read(fd, data, size) != size) {
262 free(data);
263 return NULL;
264 }
265 return data;
367e86e8 266}
67b915a5
FB		 267
268int strstart(const char *str, const char *val, const char **ptr)
269{
270 const char *p, *q;
271 p = str;
272 q = val;
273 while (*q != '\0') {
274 if (*p != *q)
275 return 0;
276 p++;
277 q++;
278 }
279 if (ptr)
280 *ptr = p;
281 return 1;
282}
283
284void pstrcpy(char *buf, int buf_size, const char *str)
285{
286 int c;
287 char *q = buf;
288
289 if (buf_size <= 0)
290 return;
291
292 for(;;) {
293 c = *str++;
294 if (c == 0 || q >= buf + buf_size - 1)
295 break;
296 *q++ = c;
297 }
298 *q = '\0';
299}
300
367e86e8
FB		 301void swab16s(uint16_t *p)
302{
303 *p = bswap16(*p);
304}
305
306void swab32s(uint32_t *p)
307{
308 *p = bswap32(*p);
309}
310
a86c8f29
TS		 311void swab32ss(int32_t *p)
312{
313 *p = bswap32(*p);
314}
315
ce11fedc 316void swab64s(uint64_t *p)
367e86e8
FB		 317{
318 *p = bswap64(*p);
319}
320
a86c8f29
TS		 321void swab64ss(int64_t *p)
322{
323 *p = bswap64(*p);
324}
325
67b915a5
FB		 326uint16_t get16(uint16_t *p)
327{
328 uint16_t val;
329 val = *p;
330 if (do_swap)
331 val = bswap16(val);
332 return val;
333}
334
335uint32_t get32(uint32_t *p)
336{
337 uint32_t val;
338 val = *p;
339 if (do_swap)
340 val = bswap32(val);
341 return val;
342}
343
344void put16(uint16_t *p, uint16_t val)
345{
346 if (do_swap)
347 val = bswap16(val);
348 *p = val;
349}
350
351void put32(uint32_t *p, uint32_t val)
352{
353 if (do_swap)
354 val = bswap32(val);
355 *p = val;
356}
357
358/* executable information */
359EXE_SYM *symtab;
360int nb_syms;
361int text_shndx;
362uint8_t *text;
363EXE_RELOC *relocs;
364int nb_relocs;
365
366#ifdef CONFIG_FORMAT_ELF
367
368/* ELF file info */
369struct elf_shdr *shdr;
370uint8_t **sdata;
371struct elfhdr ehdr;
372char *strtab;
373
374int elf_must_swap(struct elfhdr *h)
375{
376 union {
377 uint32_t i;
378 uint8_t b[4];
379 } swaptest;
380
381 swaptest.i = 1;
5fafdf24 382 return (h->e_ident[EI_DATA] == ELFDATA2MSB) !=
67b915a5
FB		 383 (swaptest.b[0] == 0);
384}
3b46e624 385
ce11fedc 386void elf_swap_ehdr(struct elfhdr *h)
367e86e8
FB		 387{
388 swab16s(&h->e_type); /* Object file type */
389 swab16s(&h-> e_machine); /* Architecture */
390 swab32s(&h-> e_version); /* Object file version */
ce11fedc
FB		 391 swabls(&h-> e_entry); /* Entry point virtual address */
392 swabls(&h-> e_phoff); /* Program header table file offset */
393 swabls(&h-> e_shoff); /* Section header table file offset */
367e86e8
FB		 394 swab32s(&h-> e_flags); /* Processor-specific flags */
395 swab16s(&h-> e_ehsize); /* ELF header size in bytes */
396 swab16s(&h-> e_phentsize); /* Program header table entry size */
397 swab16s(&h-> e_phnum); /* Program header table entry count */
398 swab16s(&h-> e_shentsize); /* Section header table entry size */
399 swab16s(&h-> e_shnum); /* Section header table entry count */
400 swab16s(&h-> e_shstrndx); /* Section header string table index */
401}
402
ce11fedc 403void elf_swap_shdr(struct elf_shdr *h)
367e86e8
FB		 404{
405 swab32s(&h-> sh_name); /* Section name (string tbl index) */
406 swab32s(&h-> sh_type); /* Section type */
ce11fedc
FB		 407 swabls(&h-> sh_flags); /* Section flags */
408 swabls(&h-> sh_addr); /* Section virtual addr at execution */
409 swabls(&h-> sh_offset); /* Section file offset */
410 swabls(&h-> sh_size); /* Section size in bytes */
367e86e8
FB		 411 swab32s(&h-> sh_link); /* Link to another section */
412 swab32s(&h-> sh_info); /* Additional section information */
ce11fedc
FB		 413 swabls(&h-> sh_addralign); /* Section alignment */
414 swabls(&h-> sh_entsize); /* Entry size if section holds table */
367e86e8
FB		 415}
416
ce11fedc 417void elf_swap_phdr(struct elf_phdr *h)
367e86e8
FB		 418{
419 swab32s(&h->p_type); /* Segment type */
ce11fedc
FB		 420 swabls(&h->p_offset); /* Segment file offset */
421 swabls(&h->p_vaddr); /* Segment virtual address */
422 swabls(&h->p_paddr); /* Segment physical address */
423 swabls(&h->p_filesz); /* Segment size in file */
424 swabls(&h->p_memsz); /* Segment size in memory */
367e86e8 425 swab32s(&h->p_flags); /* Segment flags */
ce11fedc 426 swabls(&h->p_align); /* Segment alignment */
367e86e8
FB		 427}
428
fe319756
FB		 429void elf_swap_rel(ELF_RELOC *rel)
430{
431 swabls(&rel->r_offset);
432 swabls(&rel->r_info);
433#ifdef ELF_USES_RELOCA
a86c8f29 434 swablss(&rel->r_addend);
fe319756
FB		 435#endif
436}
437
5fafdf24 438struct elf_shdr *find_elf_section(struct elf_shdr *shdr, int shnum, const char *shstr,
67b915a5
FB		 439 const char *name)
440{
441 int i;
442 const char *shname;
443 struct elf_shdr *sec;
367e86e8 444
67b915a5
FB		 445 for(i = 0; i < shnum; i++) {
446 sec = &shdr[i];
447 if (!sec->sh_name)
448 continue;
449 shname = shstr + sec->sh_name;
450 if (!strcmp(shname, name))
451 return sec;
452 }
453 return NULL;
454}
455
456int find_reloc(int sh_index)
367e86e8 457{
67b915a5
FB		 458 struct elf_shdr *sec;
459 int i;
460
461 for(i = 0; i < ehdr.e_shnum; i++) {
462 sec = &shdr[i];
5fafdf24 463 if (sec->sh_type == SHT_RELOC && sec->sh_info == sh_index)
67b915a5
FB		 464 return i;
465 }
466 return 0;
367e86e8
FB		 467}
468
82eec0a1
FB		 469static host_ulong get_rel_offset(EXE_RELOC *rel)
470{
471 return rel->r_offset;
472}
473
67b915a5 474static char *get_rel_sym_name(EXE_RELOC *rel)
367e86e8 475{
67b915a5
FB		 476 return strtab + symtab[ELFW(R_SYM)(rel->r_info)].st_name;
477}
478
479static char *get_sym_name(EXE_SYM *sym)
480{
481 return strtab + sym->st_name;
482}
483
484/* load an elf object file */
485int load_object(const char *filename)
486{
487 int fd;
488 struct elf_shdr *sec, *symtab_sec, *strtab_sec, *text_sec;
489 int i, j;
490 ElfW(Sym) *sym;
491 char *shstr;
492 ELF_RELOC *rel;
3b46e624 493
67b915a5 494 fd = open(filename, O_RDONLY);
5fafdf24 495 if (fd < 0)
67b915a5 496 error("can't open file '%s'", filename);
3b46e624 497
67b915a5
FB		 498 /* Read ELF header. */
499 if (read(fd, &ehdr, sizeof (ehdr)) != sizeof (ehdr))
500 error("unable to read file header");
501
502 /* Check ELF identification. */
503 if (ehdr.e_ident[EI_MAG0] != ELFMAG0
504 || ehdr.e_ident[EI_MAG1] != ELFMAG1
505 || ehdr.e_ident[EI_MAG2] != ELFMAG2
506 || ehdr.e_ident[EI_MAG3] != ELFMAG3
507 || ehdr.e_ident[EI_VERSION] != EV_CURRENT) {
508 error("bad ELF header");
509 }
510
511 do_swap = elf_must_swap(&ehdr);
367e86e8 512 if (do_swap)
67b915a5
FB		 513 elf_swap_ehdr(&ehdr);
514 if (ehdr.e_ident[EI_CLASS] != ELF_CLASS)
515 error("Unsupported ELF class");
516 if (ehdr.e_type != ET_REL)
517 error("ELF object file expected");
518 if (ehdr.e_version != EV_CURRENT)
519 error("Invalid ELF version");
520 if (!elf_check_arch(ehdr.e_machine))
521 error("Unsupported CPU (e_machine=%d)", ehdr.e_machine);
522
523 /* read section headers */
524 shdr = load_data(fd, ehdr.e_shoff, ehdr.e_shnum * sizeof(struct elf_shdr));
525 if (do_swap) {
526 for(i = 0; i < ehdr.e_shnum; i++) {
527 elf_swap_shdr(&shdr[i]);
528 }
529 }
530
531 /* read all section data */
532 sdata = malloc(sizeof(void *) * ehdr.e_shnum);
533 memset(sdata, 0, sizeof(void *) * ehdr.e_shnum);
3b46e624 534
67b915a5
FB		 535 for(i = 0;i < ehdr.e_shnum; i++) {
536 sec = &shdr[i];
537 if (sec->sh_type != SHT_NOBITS)
538 sdata[i] = load_data(fd, sec->sh_offset, sec->sh_size);
539 }
540
541 sec = &shdr[ehdr.e_shstrndx];
a86c8f29 542 shstr = (char *)sdata[ehdr.e_shstrndx];
67b915a5
FB		 543
544 /* swap relocations */
545 for(i = 0; i < ehdr.e_shnum; i++) {
546 sec = &shdr[i];
547 if (sec->sh_type == SHT_RELOC) {
548 nb_relocs = sec->sh_size / sec->sh_entsize;
549 if (do_swap) {
550 for(j = 0, rel = (ELF_RELOC *)sdata[i]; j < nb_relocs; j++, rel++)
551 elf_swap_rel(rel);
552 }
553 }
554 }
555 /* text section */
556
557 text_sec = find_elf_section(shdr, ehdr.e_shnum, shstr, ".text");
558 if (!text_sec)
559 error("could not find .text section");
560 text_shndx = text_sec - shdr;
561 text = sdata[text_shndx];
562
563 /* find text relocations, if any */
564 relocs = NULL;
565 nb_relocs = 0;
566 i = find_reloc(text_shndx);
567 if (i != 0) {
568 relocs = (ELF_RELOC *)sdata[i];
569 nb_relocs = shdr[i].sh_size / shdr[i].sh_entsize;
570 }
571
572 symtab_sec = find_elf_section(shdr, ehdr.e_shnum, shstr, ".symtab");
573 if (!symtab_sec)
574 error("could not find .symtab section");
575 strtab_sec = &shdr[symtab_sec->sh_link];
576
577 symtab = (ElfW(Sym) *)sdata[symtab_sec - shdr];
a86c8f29 578 strtab = (char *)sdata[symtab_sec->sh_link];
3b46e624 579
67b915a5
FB		 580 nb_syms = symtab_sec->sh_size / sizeof(ElfW(Sym));
581 if (do_swap) {
582 for(i = 0, sym = symtab; i < nb_syms; i++, sym++) {
583 swab32s(&sym->st_name);
584 swabls(&sym->st_value);
585 swabls(&sym->st_size);
586 swab16s(&sym->st_shndx);
587 }
588 }
589 close(fd);
590 return 0;
591}
592
593#endif /* CONFIG_FORMAT_ELF */
594
595#ifdef CONFIG_FORMAT_COFF
596
597/* COFF file info */
598struct external_scnhdr *shdr;
599uint8_t **sdata;
600struct external_filehdr fhdr;
601struct external_syment *coff_symtab;
602char *strtab;
603int coff_text_shndx, coff_data_shndx;
604
605int data_shndx;
606
607#define STRTAB_SIZE 4
608
609#define DIR32 0x06
610#define DISP32 0x14
611
612#define T_FUNCTION 0x20
613#define C_EXTERNAL 2
614
615void sym_ent_name(struct external_syment *ext_sym, EXE_SYM *sym)
616{
617 char *q;
618 int c, i, len;
3b46e624 619
67b915a5
FB		 620 if (ext_sym->e.e.e_zeroes != 0) {
621 q = sym->st_name;
622 for(i = 0; i < 8; i++) {
623 c = ext_sym->e.e_name[i];
624 if (c == '\0')
625 break;
626 *q++ = c;
627 }
628 *q = '\0';
629 } else {
630 pstrcpy(sym->st_name, sizeof(sym->st_name), strtab + ext_sym->e.e.e_offset);
631 }
632
633 /* now convert the name to a C name (suppress the leading '_') */
634 if (sym->st_name[0] == '_') {
635 len = strlen(sym->st_name);
636 memmove(sym->st_name, sym->st_name + 1, len - 1);
637 sym->st_name[len - 1] = '\0';
638 }
367e86e8
FB		 639}
640
67b915a5 641char *name_for_dotdata(struct coff_rel *rel)
367e86e8 642{
67b915a5
FB		 643 int i;
644 struct coff_sym *sym;
645 uint32_t text_data;
646
647 text_data = *(uint32_t *)(text + rel->r_offset);
648
649 for (i = 0, sym = symtab; i < nb_syms; i++, sym++) {
650 if (sym->st_syment->e_scnum == data_shndx &&
651 text_data >= sym->st_value &&
652 text_data < sym->st_value + sym->st_size) {
3b46e624 653
67b915a5
FB		 654 return sym->st_name;
655
656 }
657 }
658 return NULL;
367e86e8
FB		 659}
660
67b915a5 661static char *get_sym_name(EXE_SYM *sym)
367e86e8 662{
67b915a5 663 return sym->st_name;
367e86e8
FB		 664}
665
67b915a5 666static char *get_rel_sym_name(EXE_RELOC *rel)
367e86e8 667{
67b915a5
FB		 668 char *name;
669 name = get_sym_name(symtab + *(uint32_t *)(rel->r_reloc->r_symndx));
670 if (!strcmp(name, ".data"))
671 name = name_for_dotdata(rel);
b48a8bb6
FB		 672 if (name[0] == '.')
673 return NULL;
67b915a5 674 return name;
367e86e8
FB		 675}
676
82eec0a1
FB		 677static host_ulong get_rel_offset(EXE_RELOC *rel)
678{
679 return rel->r_offset;
680}
681
67b915a5 682struct external_scnhdr *find_coff_section(struct external_scnhdr *shdr, int shnum, const char *name)
367e86e8
FB		 683{
684 int i;
685 const char *shname;
67b915a5 686 struct external_scnhdr *sec;
367e86e8
FB		 687
688 for(i = 0; i < shnum; i++) {
689 sec = &shdr[i];
67b915a5 690 if (!sec->s_name)
367e86e8 691 continue;
67b915a5 692 shname = sec->s_name;
367e86e8
FB		 693 if (!strcmp(shname, name))
694 return sec;
695 }
696 return NULL;
697}
698
67b915a5
FB		 699/* load a coff object file */
700int load_object(const char *filename)
fe319756 701{
67b915a5
FB		 702 int fd;
703 struct external_scnhdr *sec, *text_sec, *data_sec;
fe319756 704 int i;
67b915a5
FB		 705 struct external_syment *ext_sym;
706 struct external_reloc *coff_relocs;
707 struct external_reloc *ext_rel;
708 uint32_t *n_strtab;
709 EXE_SYM *sym;
710 EXE_RELOC *rel;
2331d91e
FB		 711 const char *p;
712 int aux_size, j;
5fafdf24
TS		 713
714 fd = open(filename, O_RDONLY
67b915a5
FB		 715#ifdef _WIN32
716 | O_BINARY
717#endif
718 );
5fafdf24 719 if (fd < 0)
67b915a5 720 error("can't open file '%s'", filename);
3b46e624 721
67b915a5
FB		 722 /* Read COFF header. */
723 if (read(fd, &fhdr, sizeof (fhdr)) != sizeof (fhdr))
724 error("unable to read file header");
fe319756 725
67b915a5
FB		 726 /* Check COFF identification. */
727 if (fhdr.f_magic != I386MAGIC) {
728 error("bad COFF header");
729 }
730 do_swap = 0;
731
732 /* read section headers */
733 shdr = load_data(fd, sizeof(struct external_filehdr) + fhdr.f_opthdr, fhdr.f_nscns * sizeof(struct external_scnhdr));
5fafdf24 734
67b915a5
FB		 735 /* read all section data */
736 sdata = malloc(sizeof(void *) * fhdr.f_nscns);
737 memset(sdata, 0, sizeof(void *) * fhdr.f_nscns);
3b46e624 738
67b915a5 739 for(i = 0;i < fhdr.f_nscns; i++) {
fe319756 740 sec = &shdr[i];
67b915a5
FB		 741 if (!strstart(sec->s_name, ".bss", &p))
742 sdata[i] = load_data(fd, sec->s_scnptr, sec->s_size);
fe319756 743 }
fe319756 744
367e86e8 745
67b915a5
FB		 746 /* text section */
747 text_sec = find_coff_section(shdr, fhdr.f_nscns, ".text");
748 if (!text_sec)
749 error("could not find .text section");
750 coff_text_shndx = text_sec - shdr;
751 text = sdata[coff_text_shndx];
752
753 /* data section */
754 data_sec = find_coff_section(shdr, fhdr.f_nscns, ".data");
755 if (!data_sec)
756 error("could not find .data section");
757 coff_data_shndx = data_sec - shdr;
3b46e624 758
67b915a5
FB		 759 coff_symtab = load_data(fd, fhdr.f_symptr, fhdr.f_nsyms*SYMESZ);
760 for (i = 0, ext_sym = coff_symtab; i < nb_syms; i++, ext_sym++) {
761 for(i=0;i<8;i++)
762 printf(" %02x", ((uint8_t *)ext_sym->e.e_name)[i]);
763 printf("\n");
367e86e8 764 }
367e86e8 765
67b915a5
FB		 766
767 n_strtab = load_data(fd, (fhdr.f_symptr + fhdr.f_nsyms*SYMESZ), STRTAB_SIZE);
5fafdf24 768 strtab = load_data(fd, (fhdr.f_symptr + fhdr.f_nsyms*SYMESZ), *n_strtab);
3b46e624 769
67b915a5
FB		 770 nb_syms = fhdr.f_nsyms;
771
772 for (i = 0, ext_sym = coff_symtab; i < nb_syms; i++, ext_sym++) {
773 if (strstart(ext_sym->e.e_name, ".text", NULL))
774 text_shndx = ext_sym->e_scnum;
775 if (strstart(ext_sym->e.e_name, ".data", NULL))
776 data_shndx = ext_sym->e_scnum;
367e86e8 777 }
67b915a5
FB		 778
779 /* set coff symbol */
780 symtab = malloc(sizeof(struct coff_sym) * nb_syms);
781
67b915a5
FB		 782 for (i = 0, ext_sym = coff_symtab, sym = symtab; i < nb_syms; i++, ext_sym++, sym++) {
783 memset(sym, 0, sizeof(*sym));
784 sym->st_syment = ext_sym;
785 sym_ent_name(ext_sym, sym);
786 sym->st_value = ext_sym->e_value;
787
788 aux_size = *(int8_t *)ext_sym->e_numaux;
789 if (ext_sym->e_scnum == text_shndx && ext_sym->e_type == T_FUNCTION) {
790 for (j = aux_size + 1; j < nb_syms - i; j++) {
791 if ((ext_sym + j)->e_scnum == text_shndx &&
792 (ext_sym + j)->e_type == T_FUNCTION ){
793 sym->st_size = (ext_sym + j)->e_value - ext_sym->e_value;
794 break;
795 } else if (j == nb_syms - i - 1) {
796 sec = &shdr[coff_text_shndx];
797 sym->st_size = sec->s_size - ext_sym->e_value;
798 break;
799 }
800 }
801 } else if (ext_sym->e_scnum == data_shndx && *(uint8_t *)ext_sym->e_sclass == C_EXTERNAL) {
802 for (j = aux_size + 1; j < nb_syms - i; j++) {
803 if ((ext_sym + j)->e_scnum == data_shndx) {
804 sym->st_size = (ext_sym + j)->e_value - ext_sym->e_value;
805 break;
806 } else if (j == nb_syms - i - 1) {
807 sec = &shdr[coff_data_shndx];
808 sym->st_size = sec->s_size - ext_sym->e_value;
809 break;
810 }
811 }
812 } else {
813 sym->st_size = 0;
814 }
3b46e624 815
67b915a5
FB		 816 sym->st_type = ext_sym->e_type;
817 sym->st_shndx = ext_sym->e_scnum;
818 }
819
3b46e624 820
67b915a5
FB		 821 /* find text relocations, if any */
822 sec = &shdr[coff_text_shndx];
823 coff_relocs = load_data(fd, sec->s_relptr, sec->s_nreloc*RELSZ);
824 nb_relocs = sec->s_nreloc;
825
826 /* set coff relocation */
827 relocs = malloc(sizeof(struct coff_rel) * nb_relocs);
5fafdf24 828 for (i = 0, ext_rel = coff_relocs, rel = relocs; i < nb_relocs;
67b915a5
FB		 829 i++, ext_rel++, rel++) {
830 memset(rel, 0, sizeof(*rel));
831 rel->r_reloc = ext_rel;
832 rel->r_offset = *(uint32_t *)ext_rel->r_vaddr;
833 rel->r_type = *(uint16_t *)ext_rel->r_type;
834 }
835 return 0;
367e86e8
FB		 836}
837
67b915a5
FB		 838#endif /* CONFIG_FORMAT_COFF */
839
82eec0a1
FB		 840#ifdef CONFIG_FORMAT_MACH
841
842/* File Header */
843struct mach_header mach_hdr;
844
845/* commands */
846struct segment_command *segment = 0;
847struct dysymtab_command *dysymtabcmd = 0;
848struct symtab_command *symtabcmd = 0;
849
850/* section */
851struct section *section_hdr;
852struct section *text_sec_hdr;
853uint8_t **sdata;
854
855/* relocs */
856struct relocation_info *relocs;
5fafdf24 857
82eec0a1
FB		 858/* symbols */
859EXE_SYM *symtab;
860struct nlist *symtab_std;
861char *strtab;
862
863/* indirect symbols */
864uint32_t *tocdylib;
865
866/* Utility functions */
867
868static inline char *find_str_by_index(int index)
869{
870 return strtab+index;
871}
872
873/* Used by dyngen common code */
874static char *get_sym_name(EXE_SYM *sym)
875{
876 char *name = find_str_by_index(sym->n_un.n_strx);
5fafdf24 877
82eec0a1
FB		 878 if ( sym->n_type & N_STAB ) /* Debug symbols are ignored */
879 return "debug";
3b46e624 880
82eec0a1
FB		 881 if(!name)
882 return name;
883 if(name[0]=='_')
884 return name + 1;
885 else
886 return name;
887}
888
889/* find a section index given its segname, sectname */
5fafdf24 890static int find_mach_sec_index(struct section *section_hdr, int shnum, const char *segname,
82eec0a1
FB		 891 const char *sectname)
892{
893 int i;
894 struct section *sec = section_hdr;
895
896 for(i = 0; i < shnum; i++, sec++) {
897 if (!sec->segname || !sec->sectname)
898 continue;
899 if (!strcmp(sec->sectname, sectname) && !strcmp(sec->segname, segname))
900 return i;
901 }
902 return -1;
903}
904
905/* find a section header given its segname, sectname */
5fafdf24 906struct section *find_mach_sec_hdr(struct section *section_hdr, int shnum, const char *segname,
82eec0a1
FB		 907 const char *sectname)
908{
909 int index = find_mach_sec_index(section_hdr, shnum, segname, sectname);
910 if(index == -1)
911 return NULL;
912 return section_hdr+index;
913}
914
915
916static inline void fetch_next_pair_value(struct relocation_info * rel, unsigned int *value)
917{
918 struct scattered_relocation_info * scarel;
5fafdf24 919
82eec0a1
FB		 920 if(R_SCATTERED & rel->r_address) {
921 scarel = (struct scattered_relocation_info*)rel;
922 if(scarel->r_type != PPC_RELOC_PAIR)
923 error("fetch_next_pair_value: looking for a pair which was not found (1)");
924 *value = scarel->r_value;
925 } else {
926 if(rel->r_type != PPC_RELOC_PAIR)
927 error("fetch_next_pair_value: looking for a pair which was not found (2)");
928 *value = rel->r_address;
929 }
930}
931
932/* find a sym name given its value, in a section number */
933static const char * find_sym_with_value_and_sec_number( int value, int sectnum, int * offset )
934{
935 int i, ret = -1;
5fafdf24 936
82eec0a1
FB		 937 for( i = 0 ; i < nb_syms; i++ )
938 {
939 if( !(symtab[i].n_type & N_STAB) && (symtab[i].n_type & N_SECT) &&
940 (symtab[i].n_sect == sectnum) && (symtab[i].st_value <= value) )
941 {
942 if( (ret<0) || (symtab[i].st_value >= symtab[ret].st_value) )
943 ret = i;
944 }
945 }
946 if( ret < 0 ) {
947 *offset = 0;
948 return 0;
949 } else {
950 *offset = value - symtab[ret].st_value;
951 return get_sym_name(&symtab[ret]);
952 }
953}
954
5fafdf24
TS		 955/*
956 * Find symbol name given a (virtual) address, and a section which is of type
82eec0a1
FB		 957 * S_NON_LAZY_SYMBOL_POINTERS or S_LAZY_SYMBOL_POINTERS or S_SYMBOL_STUBS
958 */
959static const char * find_reloc_name_in_sec_ptr(int address, struct section * sec_hdr)
960{
961 unsigned int tocindex, symindex, size;
962 const char *name = 0;
3b46e624 963
82eec0a1
FB		 964 /* Sanity check */
965 if(!( address >= sec_hdr->addr && address < (sec_hdr->addr + sec_hdr->size) ) )
966 return (char*)0;
3b46e624 967
82eec0a1
FB		 968 if( sec_hdr->flags & S_SYMBOL_STUBS ){
969 size = sec_hdr->reserved2;
970 if(size == 0)
971 error("size = 0");
3b46e624 972
82eec0a1
FB		 973 }
974 else if( sec_hdr->flags & S_LAZY_SYMBOL_POINTERS ||
975 sec_hdr->flags & S_NON_LAZY_SYMBOL_POINTERS)
976 size = sizeof(unsigned long);
977 else
978 return 0;
3b46e624 979
82eec0a1
FB		 980 /* Compute our index in toc */
981 tocindex = (address - sec_hdr->addr)/size;
982 symindex = tocdylib[sec_hdr->reserved1 + tocindex];
5fafdf24 983
82eec0a1
FB		 984 name = get_sym_name(&symtab[symindex]);
985
986 return name;
987}
988
989static const char * find_reloc_name_given_its_address(int address)
990{
991 unsigned int i;
992 for(i = 0; i < segment->nsects ; i++)
993 {
994 const char * name = find_reloc_name_in_sec_ptr(address, &section_hdr[i]);
995 if((long)name != -1)
996 return name;
997 }
998 return 0;
999}
1000
1001static const char * get_reloc_name(EXE_RELOC * rel, int * sslide)
1002{
1003 char * name = 0;
1004 struct scattered_relocation_info * sca_rel = (struct scattered_relocation_info*)rel;
1005 int sectnum = rel->r_symbolnum;
1006 int sectoffset;
1007 int other_half=0;
5fafdf24 1008
82eec0a1
FB		 1009 /* init the slide value */
1010 *sslide = 0;
5fafdf24 1011
82eec0a1
FB		 1012 if(R_SCATTERED & rel->r_address)
1013 return (char *)find_reloc_name_given_its_address(sca_rel->r_value);
1014
1015 if(rel->r_extern)
1016 {
1017 /* ignore debug sym */
5fafdf24 1018 if ( symtab[rel->r_symbolnum].n_type & N_STAB )
82eec0a1
FB		 1019 return 0;
1020 return get_sym_name(&symtab[rel->r_symbolnum]);
1021 }
1022
1023 /* Intruction contains an offset to the symbols pointed to, in the rel->r_symbolnum section */
1024 sectoffset = *(uint32_t *)(text + rel->r_address) & 0xffff;
3b46e624 1025
82eec0a1
FB		 1026 if(sectnum==0xffffff)
1027 return 0;
1028
1029 /* Sanity Check */
1030 if(sectnum > segment->nsects)
1031 error("sectnum > segment->nsects");
1032
1033 switch(rel->r_type)
1034 {
91aa5d49 1035 case PPC_RELOC_LO16: fetch_next_pair_value(rel+1, &other_half); sectoffset |= (other_half << 16);
82eec0a1 1036 break;
91aa5d49 1037 case PPC_RELOC_HI16: fetch_next_pair_value(rel+1, &other_half); sectoffset = (sectoffset << 16) | (uint16_t)(other_half & 0xffff);
82eec0a1 1038 break;
91aa5d49 1039 case PPC_RELOC_HA16: fetch_next_pair_value(rel+1, &other_half); sectoffset = (sectoffset << 16) + (int16_t)(other_half & 0xffff);
82eec0a1
FB		 1040 break;
1041 case PPC_RELOC_BR24:
1042 sectoffset = ( *(uint32_t *)(text + rel->r_address) & 0x03fffffc );
1043 if (sectoffset & 0x02000000) sectoffset |= 0xfc000000;
1044 break;
1045 default:
1046 error("switch(rel->type) not found");
1047 }
1048
1049 if(rel->r_pcrel)
1050 sectoffset += rel->r_address;
3b46e624 1051
82eec0a1
FB		 1052 if (rel->r_type == PPC_RELOC_BR24)
1053 name = (char *)find_reloc_name_in_sec_ptr((int)sectoffset, &section_hdr[sectnum-1]);
1054
1055 /* search it in the full symbol list, if not found */
1056 if(!name)
1057 name = (char *)find_sym_with_value_and_sec_number(sectoffset, sectnum, sslide);
5fafdf24 1058
82eec0a1
FB		 1059 return name;
1060}
1061
1062/* Used by dyngen common code */
1063static const char * get_rel_sym_name(EXE_RELOC * rel)
1064{
1065 int sslide;
1066 return get_reloc_name( rel, &sslide);
1067}
1068
1069/* Used by dyngen common code */
1070static host_ulong get_rel_offset(EXE_RELOC *rel)
1071{
1072 struct scattered_relocation_info * sca_rel = (struct scattered_relocation_info*)rel;
1073 if(R_SCATTERED & rel->r_address)
1074 return sca_rel->r_address;
1075 else
1076 return rel->r_address;
1077}
1078
1079/* load a mach-o object file */
1080int load_object(const char *filename)
1081{
1082 int fd;
1083 unsigned int offset_to_segment = 0;
1084 unsigned int offset_to_dysymtab = 0;
1085 unsigned int offset_to_symtab = 0;
1086 struct load_command lc;
1087 unsigned int i, j;
1088 EXE_SYM *sym;
1089 struct nlist *syment;
3b46e624 1090
82eec0a1 1091 fd = open(filename, O_RDONLY);
5fafdf24 1092 if (fd < 0)
82eec0a1 1093 error("can't open file '%s'", filename);
3b46e624 1094
82eec0a1
FB		 1095 /* Read Mach header. */
1096 if (read(fd, &mach_hdr, sizeof (mach_hdr)) != sizeof (mach_hdr))
1097 error("unable to read file header");
1098
1099 /* Check Mach identification. */
1100 if (!check_mach_header(mach_hdr)) {
1101 error("bad Mach header");
1102 }
3b46e624 1103
82eec0a1
FB		 1104 if (mach_hdr.cputype != CPU_TYPE_POWERPC)
1105 error("Unsupported CPU");
3b46e624 1106
82eec0a1
FB		 1107 if (mach_hdr.filetype != MH_OBJECT)
1108 error("Unsupported Mach Object");
3b46e624 1109
82eec0a1
FB		 1110 /* read segment headers */
1111 for(i=0, j=sizeof(mach_hdr); i<mach_hdr.ncmds ; i++)
1112 {
1113 if(read(fd, &lc, sizeof(struct load_command)) != sizeof(struct load_command))
1114 error("unable to read load_command");
1115 if(lc.cmd == LC_SEGMENT)
1116 {
1117 offset_to_segment = j;
1118 lseek(fd, offset_to_segment, SEEK_SET);
1119 segment = malloc(sizeof(struct segment_command));
1120 if(read(fd, segment, sizeof(struct segment_command)) != sizeof(struct segment_command))
1121 error("unable to read LC_SEGMENT");
1122 }
1123 if(lc.cmd == LC_DYSYMTAB)
1124 {
1125 offset_to_dysymtab = j;
1126 lseek(fd, offset_to_dysymtab, SEEK_SET);
1127 dysymtabcmd = malloc(sizeof(struct dysymtab_command));
1128 if(read(fd, dysymtabcmd, sizeof(struct dysymtab_command)) != sizeof(struct dysymtab_command))
1129 error("unable to read LC_DYSYMTAB");
1130 }
1131 if(lc.cmd == LC_SYMTAB)
1132 {
1133 offset_to_symtab = j;
1134 lseek(fd, offset_to_symtab, SEEK_SET);
1135 symtabcmd = malloc(sizeof(struct symtab_command));
1136 if(read(fd, symtabcmd, sizeof(struct symtab_command)) != sizeof(struct symtab_command))
1137 error("unable to read LC_SYMTAB");
1138 }
1139 j+=lc.cmdsize;
1140
1141 lseek(fd, j, SEEK_SET);
1142 }
1143
1144 if(!segment)
1145 error("unable to find LC_SEGMENT");
1146
1147 /* read section headers */
1148 section_hdr = load_data(fd, offset_to_segment + sizeof(struct segment_command), segment->nsects * sizeof(struct section));
1149
1150 /* read all section data */
1151 sdata = (uint8_t **)malloc(sizeof(void *) * segment->nsects);
1152 memset(sdata, 0, sizeof(void *) * segment->nsects);
3b46e624 1153
82eec0a1
FB		 1154 /* Load the data in section data */
1155 for(i = 0; i < segment->nsects; i++) {
1156 sdata[i] = load_data(fd, section_hdr[i].offset, section_hdr[i].size);
1157 }
5fafdf24 1158
82eec0a1
FB		 1159 /* text section */
1160 text_sec_hdr = find_mach_sec_hdr(section_hdr, segment->nsects, SEG_TEXT, SECT_TEXT);
1161 i = find_mach_sec_index(section_hdr, segment->nsects, SEG_TEXT, SECT_TEXT);
1162 if (i == -1 || !text_sec_hdr)
1163 error("could not find __TEXT,__text section");
1164 text = sdata[i];
5fafdf24 1165
82eec0a1
FB		 1166 /* Make sure dysym was loaded */
1167 if(!(int)dysymtabcmd)
1168 error("could not find __DYSYMTAB segment");
3b46e624 1169
82eec0a1
FB		 1170 /* read the table of content of the indirect sym */
1171 tocdylib = load_data( fd, dysymtabcmd->indirectsymoff, dysymtabcmd->nindirectsyms * sizeof(uint32_t) );
3b46e624 1172
82eec0a1
FB		 1173 /* Make sure symtab was loaded */
1174 if(!(int)symtabcmd)
1175 error("could not find __SYMTAB segment");
1176 nb_syms = symtabcmd->nsyms;
1177
1178 symtab_std = load_data(fd, symtabcmd->symoff, symtabcmd->nsyms * sizeof(struct nlist));
1179 strtab = load_data(fd, symtabcmd->stroff, symtabcmd->strsize);
5fafdf24 1180
82eec0a1 1181 symtab = malloc(sizeof(EXE_SYM) * nb_syms);
5fafdf24 1182
82eec0a1
FB		 1183 /* Now transform the symtab, to an extended version, with the sym size, and the C name */
1184 for(i = 0, sym = symtab, syment = symtab_std; i < nb_syms; i++, sym++, syment++) {
82eec0a1
FB		 1185 struct nlist *sym_follow, *sym_next = 0;
1186 unsigned int j;
82eec0a1 1187 memset(sym, 0, sizeof(*sym));
3b46e624 1188
91aa5d49 1189 if ( syment->n_type & N_STAB ) /* Debug symbols are skipped */
82eec0a1 1190 continue;
3b46e624 1191
82eec0a1 1192 memcpy(sym, syment, sizeof(*syment));
3b46e624 1193
82eec0a1
FB		 1194 /* Find the following symbol in order to get the current symbol size */
1195 for(j = 0, sym_follow = symtab_std; j < nb_syms; j++, sym_follow++) {
1196 if ( sym_follow->n_sect != 1 || sym_follow->n_type & N_STAB || !(sym_follow->n_value > sym->st_value))
1197 continue;
1198 if(!sym_next) {
1199 sym_next = sym_follow;
1200 continue;
1201 }
1202 if(!(sym_next->n_value > sym_follow->n_value))
1203 continue;
1204 sym_next = sym_follow;
1205 }
1206 if(sym_next)
1207 sym->st_size = sym_next->n_value - sym->st_value;
1208 else
1209 sym->st_size = text_sec_hdr->size - sym->st_value;
1210 }
5fafdf24 1211
82eec0a1
FB		 1212 /* Find Reloc */
1213 relocs = load_data(fd, text_sec_hdr->reloff, text_sec_hdr->nreloc * sizeof(struct relocation_info));
1214 nb_relocs = text_sec_hdr->nreloc;
1215
1216 close(fd);
1217 return 0;
1218}
1219
1220#endif /* CONFIG_FORMAT_MACH */
1221
57fec1fe
FB		 1222/* return true if the expression is a label reference */
1223int get_reloc_expr(char *name, int name_size, const char *sym_name)
bef79c34
FB		 1224{
1225 const char *p;
1226
1227 if (strstart(sym_name, "__op_param", &p)) {
1228 snprintf(name, name_size, "param%s", p);
1229 } else if (strstart(sym_name, "__op_gen_label", &p)) {
57fec1fe
FB		 1230 snprintf(name, name_size, "param%s", p);
1231 return 1;
bef79c34 1232 } else {
f54b3f92 1233#if defined(HOST_SPARC) || defined(HOST_HPPA)
bef79c34 1234 if (sym_name[0] == '.')
4bb3973f 1235 snprintf(name, name_size,
bef79c34
FB		 1236 "(long)(&__dot_%s)",
1237 sym_name + 1);
1238 else
1239#endif
1240 snprintf(name, name_size, "(long)(&%s)", sym_name);
1241 }
57fec1fe 1242 return 0;
bef79c34
FB		 1243}
1244
b8076a74
FB		 1245#ifdef HOST_IA64
1246
1247#define PLT_ENTRY_SIZE 16 /* 1 bundle containing "brl" */
1248
1249struct plt_entry {
1250 struct plt_entry *next;
1251 const char *name;
1252 unsigned long addend;
1253} *plt_list;
1254
1255static int
1256get_plt_index (const char *name, unsigned long addend)
1257{
1258 struct plt_entry *plt, *prev= NULL;
1259 int index = 0;
1260
1261 /* see if we already have an entry for this target: */
1262 for (plt = plt_list; plt; ++index, prev = plt, plt = plt->next)
1263 if (strcmp(plt->name, name) == 0 && plt->addend == addend)
1264 return index;
1265
1266 /* nope; create a new PLT entry: */
1267
1268 plt = malloc(sizeof(*plt));
1269 if (!plt) {
1270 perror("malloc");
1271 exit(1);
1272 }
1273 memset(plt, 0, sizeof(*plt));
1274 plt->name = strdup(name);
1275 plt->addend = addend;
1276
1277 /* append to plt-list: */
1278 if (prev)
1279 prev->next = plt;
1280 else
1281 plt_list = plt;
1282 return index;
1283}
1284
1285#endif
1286
367e86e8
FB		 1287#define MAX_ARGS 3
1288
1289/* generate op code */
5fafdf24 1290void gen_code(const char *name, host_ulong offset, host_ulong size,
67b915a5 1291 FILE *outfile, int gen_switch)
367e86e8
FB		 1292{
1293 int copy_size = 0;
1294 uint8_t *p_start, *p_end;
ae228531 1295 host_ulong start_offset;
ce11fedc 1296 int nb_args, i, n;
367e86e8
FB		 1297 uint8_t args_present[MAX_ARGS];
1298 const char *sym_name, *p;
67b915a5 1299 EXE_RELOC *rel;
367e86e8 1300
ae228531
FB		 1301 /* Compute exact size excluding prologue and epilogue instructions.
1302 * Increment start_offset to skip epilogue instructions, then compute
1303 * copy_size the indicate the size of the remaining instructions (in
1304 * bytes).
1305 */
367e86e8
FB		 1306 p_start = text + offset;
1307 p_end = p_start + size;
ae228531 1308 start_offset = offset;
c4687878 1309#if defined(HOST_I386) || defined(HOST_X86_64)
67b915a5
FB		 1310#ifdef CONFIG_FORMAT_COFF
1311 {
1312 uint8_t *p;
1313 p = p_end - 1;
1314 if (p == p_start)
1315 error("empty code for %s", name);
1316 while (*p != 0xc3) {
1317 p--;
1318 if (p <= p_start)
d4e8164f 1319 error("ret or jmp expected at the end of %s", name);
367e86e8 1320 }
67b915a5
FB		 1321 copy_size = p - p_start;
1322 }
1323#else
1324 {
1325 int len;
1326 len = p_end - p_start;
1327 if (len == 0)
1328 error("empty code for %s", name);
1329 if (p_end[-1] == 0xc3) {
1330 len--;
1331 } else {
1332 error("ret or jmp expected at the end of %s", name);
367e86e8 1333 }
67b915a5
FB		 1334 copy_size = len;
1335 }
3b46e624 1336#endif
67b915a5
FB		 1337#elif defined(HOST_PPC)
1338 {
1339 uint8_t *p;
1340 p = (void *)(p_end - 4);
1341 if (p == p_start)
1342 error("empty code for %s", name);
1343 if (get32((uint32_t *)p) != 0x4e800020)
1344 error("blr expected at the end of %s", name);
1345 copy_size = p - p_start;
1346 }
1347#elif defined(HOST_S390)
1348 {
1349 uint8_t *p;
1350 p = (void *)(p_end - 2);
1351 if (p == p_start)
1352 error("empty code for %s", name);
76d83bde
TS		 1353 if ((get16((uint16_t *)p) & 0xfff0) != 0x07f0)
1354 error("br expected at the end of %s", name);
67b915a5
FB		 1355 copy_size = p - p_start;
1356 }
1357#elif defined(HOST_ALPHA)
1358 {
1359 uint8_t *p;
1360 p = p_end - 4;
630be16f 1361#if 0
67b915a5
FB		 1362 /* XXX: check why it occurs */
1363 if (p == p_start)
1364 error("empty code for %s", name);
630be16f 1365#endif
67b915a5
FB		 1366 if (get32((uint32_t *)p) != 0x6bfa8001)
1367 error("ret expected at the end of %s", name);
3b46e624 1368 copy_size = p - p_start;
67b915a5
FB		 1369 }
1370#elif defined(HOST_IA64)
1371 {
1372 uint8_t *p;
1373 p = (void *)(p_end - 4);
1374 if (p == p_start)
1375 error("empty code for %s", name);
1376 /* br.ret.sptk.many b0;; */
1377 /* 08 00 84 00 */
1378 if (get32((uint32_t *)p) != 0x00840008)
1379 error("br.ret.sptk.many b0;; expected at the end of %s", name);
b8076a74 1380 copy_size = p_end - p_start;
67b915a5
FB		 1381 }
1382#elif defined(HOST_SPARC)
1383 {
fdbb4691
FB		 1384#define INSN_SAVE 0x9de3a000
1385#define INSN_RET 0x81c7e008
74ccb34e 1386#define INSN_RETL 0x81c3e008
fdbb4691
FB		 1387#define INSN_RESTORE 0x81e80000
1388#define INSN_RETURN 0x81cfe008
1389#define INSN_NOP 0x01000000
74ccb34e
FB		 1390#define INSN_ADD_SP 0x9c03a000 // add %sp, nn, %sp
1391#define INSN_SUB_SP 0x9c23a000 // sub %sp, nn, %sp
fdbb4691 1392
67b915a5
FB		 1393 uint32_t start_insn, end_insn1, end_insn2;
1394 uint8_t *p;
1395 p = (void *)(p_end - 8);
1396 if (p <= p_start)
1397 error("empty code for %s", name);
1398 start_insn = get32((uint32_t *)(p_start + 0x0));
1399 end_insn1 = get32((uint32_t *)(p + 0x0));
1400 end_insn2 = get32((uint32_t *)(p + 0x4));
74ccb34e
FB		 1401 if (((start_insn & ~0x1fff) == INSN_SAVE) ||
1402 (start_insn & ~0x1fff) == INSN_ADD_SP) {
67b915a5
FB		 1403 p_start += 0x4;
1404 start_offset += 0x4;
fdbb4691
FB		 1405 if (end_insn1 == INSN_RET && end_insn2 == INSN_RESTORE)
1406 /* SPARC v7: ret; restore; */ ;
1407 else if (end_insn1 == INSN_RETURN && end_insn2 == INSN_NOP)
1408 /* SPARC v9: return; nop; */ ;
74ccb34e
FB		 1409 else if (end_insn1 == INSN_RETL && (end_insn2 & ~0x1fff) == INSN_SUB_SP)
1410 /* SPARC v7: retl; sub %sp, nn, %sp; */ ;
fdbb4691
FB		 1411 else
1412
67b915a5 1413 error("ret; restore; not found at end of %s", name);
74ccb34e
FB		 1414 } else if (end_insn1 == INSN_RETL && end_insn2 == INSN_NOP) {
1415 ;
67b915a5
FB		 1416 } else {
1417 error("No save at the beginning of %s", name);
1418 }
ff1f20a3 1419#if 0
67b915a5
FB		 1420 /* Skip a preceeding nop, if present. */
1421 if (p > p_start) {
1422 skip_insn = get32((uint32_t *)(p - 0x4));
fdbb4691 1423 if (skip_insn == INSN_NOP)
67b915a5
FB		 1424 p -= 4;
1425 }
ff1f20a3 1426#endif
67b915a5
FB		 1427 copy_size = p - p_start;
1428 }
1429#elif defined(HOST_SPARC64)
1430 {
74ccb34e
FB		 1431#define INSN_SAVE 0x9de3a000
1432#define INSN_RET 0x81c7e008
1433#define INSN_RETL 0x81c3e008
1434#define INSN_RESTORE 0x81e80000
1435#define INSN_RETURN 0x81cfe008
1436#define INSN_NOP 0x01000000
1437#define INSN_ADD_SP 0x9c03a000 // add %sp, nn, %sp
1438#define INSN_SUB_SP 0x9c23a000 // sub %sp, nn, %sp
1439
67b915a5
FB		 1440 uint32_t start_insn, end_insn1, end_insn2, skip_insn;
1441 uint8_t *p;
1442 p = (void *)(p_end - 8);
74ccb34e
FB		 1443#if 0
1444 /* XXX: check why it occurs */
67b915a5
FB		 1445 if (p <= p_start)
1446 error("empty code for %s", name);
74ccb34e 1447#endif
67b915a5
FB		 1448 start_insn = get32((uint32_t *)(p_start + 0x0));
1449 end_insn1 = get32((uint32_t *)(p + 0x0));
1450 end_insn2 = get32((uint32_t *)(p + 0x4));
74ccb34e
FB		 1451 if (((start_insn & ~0x1fff) == INSN_SAVE) ||
1452 (start_insn & ~0x1fff) == INSN_ADD_SP) {
67b915a5
FB		 1453 p_start += 0x4;
1454 start_offset += 0x4;
74ccb34e
FB		 1455 if (end_insn1 == INSN_RET && end_insn2 == INSN_RESTORE)
1456 /* SPARC v7: ret; restore; */ ;
1457 else if (end_insn1 == INSN_RETURN && end_insn2 == INSN_NOP)
1458 /* SPARC v9: return; nop; */ ;
1459 else if (end_insn1 == INSN_RETL && (end_insn2 & ~0x1fff) == INSN_SUB_SP)
1460 /* SPARC v7: retl; sub %sp, nn, %sp; */ ;
1461 else
1462
67b915a5 1463 error("ret; restore; not found at end of %s", name);
74ccb34e
FB		 1464 } else if (end_insn1 == INSN_RETL && end_insn2 == INSN_NOP) {
1465 ;
67b915a5
FB		 1466 } else {
1467 error("No save at the beginning of %s", name);
1468 }
3b46e624 1469
8289b279 1470#if 0
67b915a5
FB		 1471 /* Skip a preceeding nop, if present. */
1472 if (p > p_start) {
1473 skip_insn = get32((uint32_t *)(p - 0x4));
1474 if (skip_insn == 0x01000000)
1475 p -= 4;
1476 }
8289b279 1477#endif
3b46e624 1478
67b915a5
FB		 1479 copy_size = p - p_start;
1480 }
67b915a5
FB		 1481#elif defined(HOST_M68K)
1482 {
1483 uint8_t *p;
1484 p = (void *)(p_end - 2);
1485 if (p == p_start)
1486 error("empty code for %s", name);
1487 // remove NOP's, probably added for alignment
1488 while ((get16((uint16_t *)p) == 0x4e71) &&
5fafdf24 1489 (p>p_start))
67b915a5
FB		 1490 p -= 2;
1491 if (get16((uint16_t *)p) != 0x4e75)
1492 error("rts expected at the end of %s", name);
1493 copy_size = p - p_start;
1494 }
f54b3f92
AJ		 1495#elif defined(HOST_HPPA)
1496 {
1497 uint8_t *p;
1498 p = p_start;
1499 while (p < p_end) {
1500 uint32_t insn = get32((uint32_t *)p);
1501 if (insn == 0x6bc23fd9 || /* stw rp,-14(sp) */
1502 insn == 0x08030241 || /* copy r3,r1 */
1503 insn == 0x081e0243 || /* copy sp,r3 */
1504 (insn & 0xffffc000) == 0x37de0000 || /* ldo x(sp),sp */
1505 (insn & 0xffffc000) == 0x6fc10000) /* stwm r1,x(sp) */
1506 p += 4;
1507 else
1508 break;
1509 }
1510 start_offset += p - p_start;
1511 p_start = p;
1512 p = p_end - 4;
1513
1514 while (p > p_start) {
1515 uint32_t insn = get32((uint32_t *)p);
1516 if ((insn & 0xffffc000) == 0x347e0000 || /* ldo x(r3),sp */
1517 (insn & 0xffe0c000) == 0x4fc00000 || /* ldwm x(sp),rx */
1518 (insn & 0xffffc000) == 0x37de0000 || /* ldo x(sp),sp */
1519 insn == 0x48623fd9 || /* ldw -14(r3),rp */
1520 insn == 0xe840c000 || /* bv r0(rp) */
1521 insn == 0xe840c002) /* bv,n r0(rp) */
1522 p -= 4;
1523 else
1524 break;
1525 }
1526 p += 4;
1527 if (p <= p_start)
1528 error("empty code for %s", name);
1529
1530 copy_size = p - p_start;
1531 }
9617efe8 1532#elif defined(HOST_MIPS) || defined(HOST_MIPS64)
c4b89d18
TS		 1533 {
1534#define INSN_RETURN 0x03e00008
1535#define INSN_NOP 0x00000000
1536
1537 uint8_t *p = p_end;
1538
1539 if (p < (p_start + 0x8)) {
1540 error("empty code for %s", name);
1541 } else {
1542 uint32_t end_insn1, end_insn2;
1543
1544 p -= 0x8;
1545 end_insn1 = get32((uint32_t *)(p + 0x0));
1546 end_insn2 = get32((uint32_t *)(p + 0x4));
1547 if (end_insn1 != INSN_RETURN && end_insn2 != INSN_NOP)
1548 error("jr ra not found at end of %s", name);
1549 }
1550 copy_size = p - p_start;
1551 }
a2a64a1f
AZ		 1552#elif defined(HOST_ARM)
1553 error("dyngen targets not supported on ARM");
67b915a5
FB		 1554#else
1555#error unsupported CPU
1556#endif
367e86e8
FB		 1557
1558 /* compute the number of arguments by looking at the relocations */
1559 for(i = 0;i < MAX_ARGS; i++)
1560 args_present[i] = 0;
1561
ce11fedc 1562 for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
82eec0a1
FB		 1563 host_ulong offset = get_rel_offset(rel);
1564 if (offset >= start_offset &&
1565 offset < start_offset + (p_end - p_start)) {
67b915a5 1566 sym_name = get_rel_sym_name(rel);
82eec0a1
FB		 1567 if(!sym_name)
1568 continue;
c4687878
FB		 1569 if (strstart(sym_name, "__op_param", &p) ||
1570 strstart(sym_name, "__op_gen_label", &p)) {
ce11fedc 1571 n = strtoul(p, NULL, 10);
d4e8164f 1572 if (n > MAX_ARGS)
ce11fedc
FB		 1573 error("too many arguments in %s", name);
1574 args_present[n - 1] = 1;
367e86e8
FB		 1575 }
1576 }
1577 }
3b46e624 1578
367e86e8
FB		 1579 nb_args = 0;
1580 while (nb_args < MAX_ARGS && args_present[nb_args])
1581 nb_args++;
1582 for(i = nb_args; i < MAX_ARGS; i++) {
1583 if (args_present[i])
1584 error("inconsistent argument numbering in %s", name);
1585 }
1586
0ea00c9a 1587 if (gen_switch == 2) {
b29d8ae4
AJ		 1588
1589#if defined(HOST_HPPA)
1590 int op_size = copy_size;
1591 int has_stubs = 0;
1592 char relname[256];
1593 int type, is_label;
1594
1595 for (i = 0, rel = relocs; i < nb_relocs; i++, rel++) {
1596 if (rel->r_offset >= start_offset &&
1597 rel->r_offset < start_offset + copy_size) {
1598 sym_name = get_rel_sym_name(rel);
1599 sym_name = strtab + symtab[ELF32_R_SYM(rel->r_info)].st_name;
1600 is_label = get_reloc_expr(relname, sizeof(relname), sym_name);
1601 type = ELF32_R_TYPE(rel->r_info);
1602
1603 if (!is_label && type == R_PARISC_PCREL17F) {
1604 has_stubs = 1;
1605 op_size += 8; /* ldil and be,n instructions */
1606 }
1607 }
1608 }
1609
1610 if (has_stubs)
1611 op_size += 4; /* b,l,n instruction, to skip past the stubs */
1612
1613 fprintf(outfile, "DEF(%s, %d, %d)\n", name + 3, nb_args, op_size);
1614#else
1615 fprintf(outfile, "DEF(%s, %d, %d)\n", name + 3, nb_args, copy_size);
1616#endif
1617
0ea00c9a 1618 } else if (gen_switch == 1) {
dc99065b
FB		 1619
1620 /* output C code */
1621 fprintf(outfile, "case INDEX_%s: {\n", name);
1622 if (nb_args > 0) {
1623 fprintf(outfile, " long ");
1624 for(i = 0; i < nb_args; i++) {
1625 if (i != 0)
1626 fprintf(outfile, ", ");
1627 fprintf(outfile, "param%d", i + 1);
1628 }
1629 fprintf(outfile, ";\n");
367e86e8 1630 }
b8076a74
FB		 1631#if defined(HOST_IA64)
1632 fprintf(outfile, " extern char %s;\n", name);
1633#else
dc99065b 1634 fprintf(outfile, " extern void %s();\n", name);
b8076a74 1635#endif
dc99065b 1636
ce11fedc 1637 for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
82eec0a1
FB		 1638 host_ulong offset = get_rel_offset(rel);
1639 if (offset >= start_offset &&
1640 offset < start_offset + (p_end - p_start)) {
67b915a5 1641 sym_name = get_rel_sym_name(rel);
82eec0a1
FB		 1642 if(!sym_name)
1643 continue;
5fafdf24 1644 if (*sym_name &&
d4e8164f 1645 !strstart(sym_name, "__op_param", NULL) &&
c4687878
FB		 1646 !strstart(sym_name, "__op_jmp", NULL) &&
1647 !strstart(sym_name, "__op_gen_label", NULL)) {
f54b3f92 1648#if defined(HOST_SPARC) || defined(HOST_HPPA)
d014c98c
FB		 1649 if (sym_name[0] == '.') {
1650 fprintf(outfile,
1651 "extern char __dot_%s __asm__(\"%s\");\n",
1652 sym_name+1, sym_name);
1653 continue;
1654 }
1655#endif
b8076a74 1656#if defined(__APPLE__)
85028e4d
TS		 1657 /* Set __attribute((unused)) on darwin because we
1658 want to avoid warning when we don't use the symbol. */
1659 fprintf(outfile, " extern char %s __attribute__((unused));\n", sym_name);
b8076a74
FB		 1660#elif defined(HOST_IA64)
1661 if (ELF64_R_TYPE(rel->r_info) != R_IA64_PCREL21B)
1662 /*
1663 * PCREL21 br.call targets generally
1664 * are out of range and need to go
1665 * through an "import stub".
1666 */
1667 fprintf(outfile, " extern char %s;\n",
1668 sym_name);
82eec0a1 1669#else
ce11fedc 1670 fprintf(outfile, "extern char %s;\n", sym_name);
82eec0a1 1671#endif
dc99065b
FB		 1672 }
1673 }
1674 }
1675
f54b3f92
AJ		 1676#ifdef __hppa__
1677 fprintf(outfile, " memcpy(gen_code_ptr, (void *)((char *)__canonicalize_funcptr_for_compare(%s)+%d), %d);\n",
1678 name, (int)(start_offset - offset), copy_size);
1679#else
82eec0a1
FB		 1680 fprintf(outfile, " memcpy(gen_code_ptr, (void *)((char *)&%s+%d), %d);\n",
1681 name, (int)(start_offset - offset), copy_size);
f54b3f92 1682#endif
d4e8164f
FB		 1683
1684 /* emit code offset information */
1685 {
67b915a5 1686 EXE_SYM *sym;
d4e8164f 1687 const char *sym_name, *p;
7a2d6d96 1688 host_ulong val;
d4e8164f
FB		 1689 int n;
1690
1691 for(i = 0, sym = symtab; i < nb_syms; i++, sym++) {
67b915a5 1692 sym_name = get_sym_name(sym);
d4e8164f 1693 if (strstart(sym_name, "__op_label", &p)) {
c1e42a13 1694 uint8_t *ptr;
fe319756 1695 unsigned long offset;
3b46e624 1696
d4e8164f
FB		 1697 /* test if the variable refers to a label inside
1698 the code we are generating */
67b915a5
FB		 1699#ifdef CONFIG_FORMAT_COFF
1700 if (sym->st_shndx == text_shndx) {
1701 ptr = sdata[coff_text_shndx];
1702 } else if (sym->st_shndx == data_shndx) {
1703 ptr = sdata[coff_data_shndx];
1704 } else {
1705 ptr = NULL;
1706 }
82eec0a1
FB		 1707#elif defined(CONFIG_FORMAT_MACH)
1708 if(!sym->n_sect)
1709 continue;
1710 ptr = sdata[sym->n_sect-1];
67b915a5 1711#else
fe319756 1712 ptr = sdata[sym->st_shndx];
67b915a5 1713#endif
fe319756
FB		 1714 if (!ptr)
1715 error("__op_labelN in invalid section");
1716 offset = sym->st_value;
82eec0a1
FB		 1717#ifdef CONFIG_FORMAT_MACH
1718 offset -= section_hdr[sym->n_sect-1].addr;
1719#endif
7a2d6d96 1720 val = *(host_ulong *)(ptr + offset);
fe319756
FB		 1721#ifdef ELF_USES_RELOCA
1722 {
1723 int reloc_shndx, nb_relocs1, j;
1724
1725 /* try to find a matching relocation */
1726 reloc_shndx = find_reloc(sym->st_shndx);
1727 if (reloc_shndx) {
5fafdf24 1728 nb_relocs1 = shdr[reloc_shndx].sh_size /
fe319756
FB		 1729 shdr[reloc_shndx].sh_entsize;
1730 rel = (ELF_RELOC *)sdata[reloc_shndx];
1731 for(j = 0; j < nb_relocs1; j++) {
1732 if (rel->r_offset == offset) {
039de852 1733 val = rel->r_addend;
fe319756
FB		 1734 break;
1735 }
1736 rel++;
1737 }
1738 }
1739 }
3b46e624 1740#endif
c4687878 1741 if (val >= start_offset && val <= start_offset + copy_size) {
d4e8164f 1742 n = strtol(p, NULL, 10);
3442e896 1743 fprintf(outfile, " label_offsets[%d] = %ld + (gen_code_ptr - gen_code_buf);\n", n, (long)(val - start_offset));
d4e8164f
FB		 1744 }
1745 }
1746 }
1747 }
1748
85028e4d 1749 /* load parameters in variables */
dc99065b
FB		 1750 for(i = 0; i < nb_args; i++) {
1751 fprintf(outfile, " param%d = *opparam_ptr++;\n", i + 1);
1752 }
1753
1754 /* patch relocations */
ce11fedc 1755#if defined(HOST_I386)
dc99065b 1756 {
4a1a1707 1757 char relname[256];
57fec1fe 1758 int type, is_label;
ce11fedc 1759 int addend;
3442e896 1760 int reloc_offset;
dc99065b 1761 for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
ae228531
FB		 1762 if (rel->r_offset >= start_offset &&
1763 rel->r_offset < start_offset + copy_size) {
67b915a5 1764 sym_name = get_rel_sym_name(rel);
b48a8bb6
FB		 1765 if (!sym_name)
1766 continue;
3442e896 1767 reloc_offset = rel->r_offset - start_offset;
ecd854fd
FB		 1768 if (strstart(sym_name, "__op_jmp", &p)) {
1769 int n;
1770 n = strtol(p, NULL, 10);
1771 /* __op_jmp relocations are done at
1772 runtime to do translated block
1773 chaining: the offset of the instruction
1774 needs to be stored */
1775 fprintf(outfile, " jmp_offsets[%d] = %d + (gen_code_ptr - gen_code_buf);\n",
3442e896 1776 n, reloc_offset);
ecd854fd
FB		 1777 continue;
1778 }
3442e896 1779
57fec1fe 1780 is_label = get_reloc_expr(relname, sizeof(relname), sym_name);
367e86e8 1781 addend = get32((uint32_t *)(text + rel->r_offset));
67b915a5
FB		 1782#ifdef CONFIG_FORMAT_ELF
1783 type = ELF32_R_TYPE(rel->r_info);
57fec1fe
FB		 1784 if (is_label) {
1785 switch(type) {
1786 case R_386_32:
1787 case R_386_PC32:
1788 fprintf(outfile, " tcg_out_reloc(s, gen_code_ptr + %d, %d, %s, %d);\n",
1789 reloc_offset, type, relname, addend);
1790 break;
1791 default:
1792 error("unsupported i386 relocation (%d)", type);
1793 }
1794 } else {
1795 switch(type) {
1796 case R_386_32:
1797 fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %d;\n",
1798 reloc_offset, relname, addend);
1799 break;
1800 case R_386_PC32:
1801 fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s - (long)(gen_code_ptr + %d) + %d;\n",
1802 reloc_offset, relname, reloc_offset, addend);
1803 break;
1804 default:
1805 error("unsupported i386 relocation (%d)", type);
1806 }
367e86e8 1807 }
67b915a5 1808#elif defined(CONFIG_FORMAT_COFF)
40c3bac3
FB		 1809 {
1810 char *temp_name;
1811 int j;
1812 EXE_SYM *sym;
1813 temp_name = get_sym_name(symtab + *(uint32_t *)(rel->r_reloc->r_symndx));
1814 if (!strcmp(temp_name, ".data")) {
1815 for (j = 0, sym = symtab; j < nb_syms; j++, sym++) {
1816 if (strstart(sym->st_name, sym_name, NULL)) {
1817 addend -= sym->st_value;
1818 }
1819 }
1820 }
1821 }
67b915a5 1822 type = rel->r_type;
a4d8670f
FB		 1823 if (is_label) {
1824/* TCG uses elf relocation constants */
1825#define R_386_32 1
1826#define R_386_PC32 2
1827 switch(type) {
1828 case DIR32:
1829 type = R_386_32;
1830 goto do_reloc;
1831 case DISP32:
1832 type = R_386_PC32;
1833 addend -= 4;
1834 do_reloc:
1835 fprintf(outfile, " tcg_out_reloc(s, gen_code_ptr + %d, %d, %s, %d);\n",
1836 reloc_offset, type, relname, addend);
1837 break;
1838 default:
1839 error("unsupported i386 relocation (%d)", type);
1840 }
1841 } else {
1842 switch(type) {
1843 case DIR32:
1844 fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %d;\n",
1845 reloc_offset, relname, addend);
1846 break;
1847 case DISP32:
1848 fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s - (long)(gen_code_ptr + %d) + %d -4;\n",
1849 reloc_offset, relname, reloc_offset, addend);
1850 break;
1851 default:
1852 error("unsupported i386 relocation (%d)", type);
1853 }
67b915a5
FB		 1854 }
1855#else
1856#error unsupport object format
1857#endif
367e86e8 1858 }
dc99065b
FB		 1859 }
1860 }
c4687878 1861#elif defined(HOST_X86_64)
bc51c5c9 1862 {
4a1a1707 1863 char relname[256];
57fec1fe 1864 int type, is_label;
bc51c5c9 1865 int addend;
3442e896 1866 int reloc_offset;
bc51c5c9
FB		 1867 for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
1868 if (rel->r_offset >= start_offset &&
1869 rel->r_offset < start_offset + copy_size) {
1870 sym_name = strtab + symtab[ELFW(R_SYM)(rel->r_info)].st_name;
57fec1fe 1871 is_label = get_reloc_expr(relname, sizeof(relname), sym_name);
bc51c5c9
FB		 1872 type = ELF32_R_TYPE(rel->r_info);
1873 addend = rel->r_addend;
3442e896 1874 reloc_offset = rel->r_offset - start_offset;
57fec1fe
FB		 1875 if (is_label) {
1876 switch(type) {
1877 case R_X86_64_32:
1878 case R_X86_64_32S:
1879 case R_X86_64_PC32:
1880 fprintf(outfile, " tcg_out_reloc(s, gen_code_ptr + %d, %d, %s, %d);\n",
1881 reloc_offset, type, relname, addend);
1882 break;
1883 default:
1884 error("unsupported X86_64 relocation (%d)", type);
1885 }
1886 } else {
1887 switch(type) {
1888 case R_X86_64_32:
1889 fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = (uint32_t)%s + %d;\n",
1890 reloc_offset, relname, addend);
1891 break;
1892 case R_X86_64_32S:
1893 fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = (int32_t)%s + %d;\n",
1894 reloc_offset, relname, addend);
1895 break;
1896 case R_X86_64_PC32:
1897 fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s - (long)(gen_code_ptr + %d) + %d;\n",
1898 reloc_offset, relname, reloc_offset, addend);
1899 break;
1900 default:
1901 error("unsupported X86_64 relocation (%d)", type);
1902 }
bc51c5c9
FB		 1903 }
1904 }
1905 }
1906 }
ce11fedc 1907#elif defined(HOST_PPC)
04369ff2 1908 {
82eec0a1 1909#ifdef CONFIG_FORMAT_ELF
4a1a1707 1910 char relname[256];
04369ff2 1911 int type;
ce11fedc 1912 int addend;
90426a4e 1913 int is_label;
3442e896 1914 int reloc_offset;
04369ff2 1915 for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
ae228531 1916 if (rel->r_offset >= start_offset &&
90426a4e 1917 rel->r_offset < start_offset + copy_size) {
efdea7bf 1918 sym_name = strtab + symtab[ELFW(R_SYM)(rel->r_info)].st_name;
3442e896 1919 reloc_offset = rel->r_offset - start_offset;
d4e8164f
FB		 1920 if (strstart(sym_name, "__op_jmp", &p)) {
1921 int n;
1922 n = strtol(p, NULL, 10);
1923 /* __op_jmp relocations are done at
1924 runtime to do translated block
1925 chaining: the offset of the instruction
1926 needs to be stored */
1927 fprintf(outfile, " jmp_offsets[%d] = %d + (gen_code_ptr - gen_code_buf);\n",
3442e896 1928 n, reloc_offset);
d4e8164f
FB		 1929 continue;
1930 }
3b46e624 1931
4a1a1707 1932 get_reloc_expr(relname, sizeof(relname), sym_name);
04369ff2 1933 type = ELF32_R_TYPE(rel->r_info);
90426a4e 1934 is_label = get_reloc_expr(relname, sizeof(relname), sym_name);
04369ff2 1935 addend = rel->r_addend;
90426a4e
FB		 1936 if (is_label) {
1937 switch (type) {
1938 case R_PPC_REL24:
1939 fprintf (outfile, " tcg_out_reloc(s, gen_code_ptr + %d, %d, %s, %d);\n",
1940 reloc_offset, type, relname, addend);
1941 break;
1942 default:
1943 error ("unsupported ppc relocation (%d)", type);
1944 }
1945 }
1946 else {
1947 switch(type) {
1948 case R_PPC_ADDR32:
1949 fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %d;\n",
1950 reloc_offset, relname, addend);
1951 break;
1952 case R_PPC_ADDR16_LO:
1953 fprintf(outfile, " *(uint16_t *)(gen_code_ptr + %d) = (%s + %d);\n",
1954 reloc_offset, relname, addend);
1955 break;
1956 case R_PPC_ADDR16_HI:
1957 fprintf(outfile, " *(uint16_t *)(gen_code_ptr + %d) = (%s + %d) >> 16;\n",
1958 reloc_offset, relname, addend);
1959 break;
1960 case R_PPC_ADDR16_HA:
1961 fprintf(outfile, " *(uint16_t *)(gen_code_ptr + %d) = (%s + %d + 0x8000) >> 16;\n",
1962 reloc_offset, relname, addend);
1963 break;
1964 case R_PPC_REL24:
1965 /* warning: must be at 32 MB distancy */
5be16762 1966 fprintf(outfile, "{\n"
1967 " long disp = (%s - (long)(gen_code_ptr + %d) + %d);\n"
1968 " if ((disp << 6) >> 6 != disp) {;\n"
1969 " fprintf(stderr, \"Branch target is too far away\\n\");"
1970 " abort();\n"
1971 " }\n"
1972 "}\n",
1973 relname, reloc_offset, addend);
90426a4e
FB		 1974 fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = (*(uint32_t *)(gen_code_ptr + %d) & ~0x03fffffc) | ((%s - (long)(gen_code_ptr + %d) + %d) & 0x03fffffc);\n",
1975 reloc_offset, reloc_offset, relname, reloc_offset, addend);
1976 break;
1977 default:
1978 error("unsupported powerpc relocation (%d)", type);
1979 }
04369ff2
FB		 1980 }
1981 }
1982 }
82eec0a1 1983#elif defined(CONFIG_FORMAT_MACH)
a029baa4
TS		 1984 struct scattered_relocation_info *scarel;
1985 struct relocation_info * rel;
1986 char final_sym_name[256];
1987 const char *sym_name;
1988 const char *p;
1989 int slide, sslide;
1990 int i;
1991
1992 for(i = 0, rel = relocs; i < nb_relocs; i++, rel++) {
1993 unsigned int offset, length, value = 0;
1994 unsigned int type, pcrel, isym = 0;
1995 unsigned int usesym = 0;
1996
1997 if(R_SCATTERED & rel->r_address) {
1998 scarel = (struct scattered_relocation_info*)rel;
1999 offset = (unsigned int)scarel->r_address;
2000 length = scarel->r_length;
2001 pcrel = scarel->r_pcrel;
2002 type = scarel->r_type;
2003 value = scarel->r_value;
2004 } else {
2005 value = isym = rel->r_symbolnum;
2006 usesym = (rel->r_extern);
2007 offset = rel->r_address;
2008 length = rel->r_length;
2009 pcrel = rel->r_pcrel;
2010 type = rel->r_type;
2011 }
2012
2013 slide = offset - start_offset;
2014
5fafdf24 2015 if (!(offset >= start_offset && offset < start_offset + size))
a029baa4
TS		 2016 continue; /* not in our range */
2017
2018 sym_name = get_reloc_name(rel, &sslide);
2019
2020 if(usesym && symtab[isym].n_type & N_STAB)
2021 continue; /* don't handle STAB (debug sym) */
2022
2023 if (sym_name && strstart(sym_name, "__op_jmp", &p)) {
2024 int n;
2025 n = strtol(p, NULL, 10);
2026 fprintf(outfile, " jmp_offsets[%d] = %d + (gen_code_ptr - gen_code_buf);\n",
2027 n, slide);
2028 continue; /* Nothing more to do */
2029 }
2030
2031 if(!sym_name) {
2032 fprintf(outfile, "/* #warning relocation not handled in %s (value 0x%x, %s, offset 0x%x, length 0x%x, %s, type 0x%x) */\n",
2033 name, value, usesym ? "use sym" : "don't use sym", offset, length, pcrel ? "pcrel":"", type);
2034 continue; /* dunno how to handle without final_sym_name */
2035 }
2036
5fafdf24 2037 get_reloc_expr(final_sym_name, sizeof(final_sym_name),
a029baa4
TS		 2038 sym_name);
2039 switch(type) {
2040 case PPC_RELOC_BR24:
2041 if (!strstart(sym_name,"__op_gen_label",&p)) {
2042 fprintf(outfile, "{\n");
2043 fprintf(outfile, " uint32_t imm = *(uint32_t *)(gen_code_ptr + %d) & 0x3fffffc;\n", slide);
2044 fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = (*(uint32_t *)(gen_code_ptr + %d) & ~0x03fffffc) | ((imm + ((long)%s - (long)gen_code_ptr) + %d) & 0x03fffffc);\n",
2045 slide, slide, name, sslide);
2046 fprintf(outfile, "}\n");
2047 } else {
2048 fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = (*(uint32_t *)(gen_code_ptr + %d) & ~0x03fffffc) | (((long)%s - (long)gen_code_ptr - %d) & 0x03fffffc);\n",
2049 slide, slide, final_sym_name, slide);
2050 }
82eec0a1 2051 break;
a029baa4 2052 case PPC_RELOC_HI16:
5fafdf24 2053 fprintf(outfile, " *(uint16_t *)(gen_code_ptr + %d + 2) = (%s + %d) >> 16;\n",
a029baa4
TS		 2054 slide, final_sym_name, sslide);
2055 break;
2056 case PPC_RELOC_LO16:
5fafdf24 2057 fprintf(outfile, " *(uint16_t *)(gen_code_ptr + %d + 2) = (%s + %d);\n",
a029baa4
TS		 2058 slide, final_sym_name, sslide);
2059 break;
2060 case PPC_RELOC_HA16:
5fafdf24 2061 fprintf(outfile, " *(uint16_t *)(gen_code_ptr + %d + 2) = (%s + %d + 0x8000) >> 16;\n",
a029baa4
TS		 2062 slide, final_sym_name, sslide);
2063 break;
2064 default:
2065 error("unsupported powerpc relocation (%d)", type);
2066 }
2067 }
82eec0a1
FB		 2068#else
2069#error unsupport object format
2070#endif
04369ff2 2071 }
ce11fedc 2072#elif defined(HOST_S390)
fb3e5849 2073 {
4a1a1707 2074 char relname[256];
fb3e5849 2075 int type;
ce11fedc 2076 int addend;
3442e896 2077 int reloc_offset;
fb3e5849 2078 for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
ae228531
FB		 2079 if (rel->r_offset >= start_offset &&
2080 rel->r_offset < start_offset + copy_size) {
efdea7bf 2081 sym_name = strtab + symtab[ELFW(R_SYM)(rel->r_info)].st_name;
4a1a1707 2082 get_reloc_expr(relname, sizeof(relname), sym_name);
fb3e5849
FB		 2083 type = ELF32_R_TYPE(rel->r_info);
2084 addend = rel->r_addend;
3442e896 2085 reloc_offset = rel->r_offset - start_offset;
fb3e5849
FB		 2086 switch(type) {
2087 case R_390_32:
5fafdf24 2088 fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %d;\n",
4a1a1707 2089 reloc_offset, relname, addend);
fb3e5849
FB		 2090 break;
2091 case R_390_16:
5fafdf24 2092 fprintf(outfile, " *(uint16_t *)(gen_code_ptr + %d) = %s + %d;\n",
4a1a1707 2093 reloc_offset, relname, addend);
fb3e5849
FB		 2094 break;
2095 case R_390_8:
5fafdf24 2096 fprintf(outfile, " *(uint8_t *)(gen_code_ptr + %d) = %s + %d;\n",
4a1a1707 2097 reloc_offset, relname, addend);
fb3e5849 2098 break;
76d83bde
TS		 2099 case R_390_PC32DBL:
2100 if (ELF32_ST_TYPE(symtab[ELFW(R_SYM)(rel->r_info)].st_info) == STT_SECTION) {
2101 fprintf(outfile,
2102 " *(uint32_t *)(gen_code_ptr + %d) += "
2103 "((long)&%s - (long)gen_code_ptr) >> 1;\n",
2104 reloc_offset, name);
2105 }
2106 else
2107 fprintf(outfile,
2108 " *(uint32_t *)(gen_code_ptr + %d) = "
2109 "(%s + %d - ((uint32_t)gen_code_ptr + %d)) >> 1;\n",
2110 reloc_offset, relname, addend, reloc_offset);
2111 break;
fb3e5849
FB		 2112 default:
2113 error("unsupported s390 relocation (%d)", type);
2114 }
2115 }
2116 }
2117 }
efdea7bf
FB		 2118#elif defined(HOST_ALPHA)
2119 {
2120 for (i = 0, rel = relocs; i < nb_relocs; i++, rel++) {
ae228531 2121 if (rel->r_offset >= start_offset && rel->r_offset < start_offset + copy_size) {
efdea7bf 2122 int type;
3442e896 2123 long reloc_offset;
74c95119 2124
efdea7bf 2125 type = ELF64_R_TYPE(rel->r_info);
74c95119 2126 sym_name = strtab + symtab[ELF64_R_SYM(rel->r_info)].st_name;
3442e896 2127 reloc_offset = rel->r_offset - start_offset;
efdea7bf
FB		 2128 switch (type) {
2129 case R_ALPHA_GPDISP:
74c95119
FB		 2130 /* The gp is just 32 bit, and never changes, so it's easiest to emit it
2131 as an immediate instead of constructing it from the pv or ra. */
2132 fprintf(outfile, " immediate_ldah(gen_code_ptr + %ld, gp);\n",
3442e896 2133 reloc_offset);
74c95119 2134 fprintf(outfile, " immediate_lda(gen_code_ptr + %ld, gp);\n",
3442e896 2135 reloc_offset + (int)rel->r_addend);
efdea7bf
FB		 2136 break;
2137 case R_ALPHA_LITUSE:
2138 /* jsr to literal hint. Could be used to optimize to bsr. Ignore for
2139 now, since some called functions (libc) need pv to be set up. */
2140 break;
2141 case R_ALPHA_HINT:
2142 /* Branch target prediction hint. Ignore for now. Should be already
2143 correct for in-function jumps. */
2144 break;
2145 case R_ALPHA_LITERAL:
74c95119
FB		 2146 /* Load a literal from the GOT relative to the gp. Since there's only a
2147 single gp, nothing is to be done. */
2148 break;
2149 case R_ALPHA_GPRELHIGH:
2150 /* Handle fake relocations against __op_param symbol. Need to emit the
2151 high part of the immediate value instead. Other symbols need no
2152 special treatment. */
2153 if (strstart(sym_name, "__op_param", &p))
2154 fprintf(outfile, " immediate_ldah(gen_code_ptr + %ld, param%s);\n",
3442e896 2155 reloc_offset, p);
74c95119
FB		 2156 break;
2157 case R_ALPHA_GPRELLOW:
2158 if (strstart(sym_name, "__op_param", &p))
2159 fprintf(outfile, " immediate_lda(gen_code_ptr + %ld, param%s);\n",
3442e896 2160 reloc_offset, p);
74c95119
FB		 2161 break;
2162 case R_ALPHA_BRSGP:
2163 /* PC-relative jump. Tweak offset to skip the two instructions that try to
2164 set up the gp from the pv. */
2f87c607 2165 fprintf(outfile, " fix_bsr(gen_code_ptr + %ld, (uint8_t *) &%s - (gen_code_ptr + %ld + 4) + 8);\n",
3442e896 2166 reloc_offset, sym_name, reloc_offset);
efdea7bf
FB		 2167 break;
2168 default:
2169 error("unsupported Alpha relocation (%d)", type);
2170 }
2171 }
2172 }
2173 }
2174#elif defined(HOST_IA64)
2175 {
b8076a74
FB		 2176 unsigned long sym_idx;
2177 long code_offset;
4a1a1707 2178 char relname[256];
efdea7bf 2179 int type;
b8076a74
FB		 2180 long addend;
2181
efdea7bf 2182 for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
b8076a74
FB		 2183 sym_idx = ELF64_R_SYM(rel->r_info);
2184 if (rel->r_offset < start_offset
2185 || rel->r_offset >= start_offset + copy_size)
2186 continue;
2187 sym_name = (strtab + symtab[sym_idx].st_name);
3442e896 2188 code_offset = rel->r_offset - start_offset;
b8076a74
FB		 2189 if (strstart(sym_name, "__op_jmp", &p)) {
2190 int n;
2191 n = strtol(p, NULL, 10);
2192 /* __op_jmp relocations are done at
2193 runtime to do translated block
2194 chaining: the offset of the instruction
2195 needs to be stored */
2196 fprintf(outfile, " jmp_offsets[%d] ="
2197 "%ld + (gen_code_ptr - gen_code_buf);\n",
3442e896 2198 n, code_offset);
b8076a74
FB		 2199 continue;
2200 }
4a1a1707 2201 get_reloc_expr(relname, sizeof(relname), sym_name);
b8076a74
FB		 2202 type = ELF64_R_TYPE(rel->r_info);
2203 addend = rel->r_addend;
b8076a74
FB		 2204 switch(type) {
2205 case R_IA64_IMM64:
2206 fprintf(outfile,
2207 " ia64_imm64(gen_code_ptr + %ld, "
2208 "%s + %ld);\n",
4a1a1707 2209 code_offset, relname, addend);
b8076a74
FB		 2210 break;
2211 case R_IA64_LTOFF22X:
2212 case R_IA64_LTOFF22:
2213 fprintf(outfile, " IA64_LTOFF(gen_code_ptr + %ld,"
2214 " %s + %ld, %d);\n",
4a1a1707 2215 code_offset, relname, addend,
b8076a74
FB		 2216 (type == R_IA64_LTOFF22X));
2217 break;
2218 case R_IA64_LDXMOV:
2219 fprintf(outfile,
2220 " ia64_ldxmov(gen_code_ptr + %ld,"
4a1a1707 2221 " %s + %ld);\n", code_offset, relname, addend);
b8076a74
FB		 2222 break;
2223
2224 case R_IA64_PCREL21B:
2225 if (strstart(sym_name, "__op_gen_label", NULL)) {
2226 fprintf(outfile,
2227 " ia64_imm21b(gen_code_ptr + %ld,"
2228 " (long) (%s + %ld -\n\t\t"
2229 "((long) gen_code_ptr + %ld)) >> 4);\n",
4a1a1707 2230 code_offset, relname, addend,
b8076a74
FB		 2231 code_offset & ~0xfUL);
2232 } else {
2233 fprintf(outfile,
2234 " IA64_PLT(gen_code_ptr + %ld, "
2235 "%d);\t/* %s + %ld */\n",
2236 code_offset,
2237 get_plt_index(sym_name, addend),
2238 sym_name, addend);
2239 }
2240 break;
2241 default:
2242 error("unsupported ia64 relocation (0x%x)",
2243 type);
2244 }
efdea7bf 2245 }
b8076a74
FB		 2246 fprintf(outfile, " ia64_nop_b(gen_code_ptr + %d);\n",
2247 copy_size - 16 + 2);
efdea7bf 2248 }
d014c98c
FB		 2249#elif defined(HOST_SPARC)
2250 {
4a1a1707 2251 char relname[256];
d014c98c
FB		 2252 int type;
2253 int addend;
3442e896 2254 int reloc_offset;
d014c98c 2255 for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
ae228531
FB		 2256 if (rel->r_offset >= start_offset &&
2257 rel->r_offset < start_offset + copy_size) {
d014c98c 2258 sym_name = strtab + symtab[ELF32_R_SYM(rel->r_info)].st_name;
4a1a1707 2259 get_reloc_expr(relname, sizeof(relname), sym_name);
d014c98c
FB		 2260 type = ELF32_R_TYPE(rel->r_info);
2261 addend = rel->r_addend;
3442e896 2262 reloc_offset = rel->r_offset - start_offset;
d014c98c
FB		 2263 switch(type) {
2264 case R_SPARC_32:
5fafdf24 2265 fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %d;\n",
4a1a1707 2266 reloc_offset, relname, addend);
d014c98c
FB		 2267 break;
2268 case R_SPARC_HI22:
2269 fprintf(outfile,
2270 " *(uint32_t *)(gen_code_ptr + %d) = "
2271 "((*(uint32_t *)(gen_code_ptr + %d)) "
2272 " & ~0x3fffff) "
ae228531 2273 " | (((%s + %d) >> 10) & 0x3fffff);\n",
4a1a1707 2274 reloc_offset, reloc_offset, relname, addend);
d014c98c
FB		 2275 break;
2276 case R_SPARC_LO10:
2277 fprintf(outfile,
2278 " *(uint32_t *)(gen_code_ptr + %d) = "
2279 "((*(uint32_t *)(gen_code_ptr + %d)) "
2280 " & ~0x3ff) "
2281 " | ((%s + %d) & 0x3ff);\n",
4a1a1707 2282 reloc_offset, reloc_offset, relname, addend);
d014c98c
FB		 2283 break;
2284 case R_SPARC_WDISP30:
2285 fprintf(outfile,
2286 " *(uint32_t *)(gen_code_ptr + %d) = "
2287 "((*(uint32_t *)(gen_code_ptr + %d)) "
2288 " & ~0x3fffffff) "
ae228531 2289 " | ((((%s + %d) - (long)(gen_code_ptr + %d))>>2) "
d014c98c 2290 " & 0x3fffffff);\n",
4a1a1707 2291 reloc_offset, reloc_offset, relname, addend,
3442e896 2292 reloc_offset);
d014c98c 2293 break;
fdbb4691
FB		 2294 case R_SPARC_WDISP22:
2295 fprintf(outfile,
2296 " *(uint32_t *)(gen_code_ptr + %d) = "
2297 "((*(uint32_t *)(gen_code_ptr + %d)) "
2298 " & ~0x3fffff) "
2299 " | ((((%s + %d) - (long)(gen_code_ptr + %d))>>2) "
2300 " & 0x3fffff);\n",
2301 rel->r_offset - start_offset,
2302 rel->r_offset - start_offset,
4a1a1707 2303 relname, addend,
fdbb4691
FB		 2304 rel->r_offset - start_offset);
2305 break;
d014c98c
FB		 2306 default:
2307 error("unsupported sparc relocation (%d)", type);
2308 }
2309 }
2310 }
2311 }
2312#elif defined(HOST_SPARC64)
2313 {
4a1a1707 2314 char relname[256];
d014c98c
FB		 2315 int type;
2316 int addend;
3442e896 2317 int reloc_offset;
d014c98c 2318 for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
ae228531
FB		 2319 if (rel->r_offset >= start_offset &&
2320 rel->r_offset < start_offset + copy_size) {
d014c98c 2321 sym_name = strtab + symtab[ELF64_R_SYM(rel->r_info)].st_name;
4a1a1707 2322 get_reloc_expr(relname, sizeof(relname), sym_name);
74ccb34e 2323 type = ELF32_R_TYPE(rel->r_info);
d014c98c 2324 addend = rel->r_addend;
3442e896 2325 reloc_offset = rel->r_offset - start_offset;
d014c98c
FB		 2326 switch(type) {
2327 case R_SPARC_32:
2328 fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %d;\n",
4a1a1707 2329 reloc_offset, relname, addend);
d014c98c
FB		 2330 break;
2331 case R_SPARC_HI22:
2332 fprintf(outfile,
2333 " *(uint32_t *)(gen_code_ptr + %d) = "
2334 "((*(uint32_t *)(gen_code_ptr + %d)) "
2335 " & ~0x3fffff) "
ae228531 2336 " | (((%s + %d) >> 10) & 0x3fffff);\n",
4a1a1707 2337 reloc_offset, reloc_offset, relname, addend);
d014c98c
FB		 2338 break;
2339 case R_SPARC_LO10:
2340 fprintf(outfile,
2341 " *(uint32_t *)(gen_code_ptr + %d) = "
2342 "((*(uint32_t *)(gen_code_ptr + %d)) "
2343 " & ~0x3ff) "
2344 " | ((%s + %d) & 0x3ff);\n",
4a1a1707 2345 reloc_offset, reloc_offset, relname, addend);
d014c98c 2346 break;
74ccb34e
FB		 2347 case R_SPARC_OLO10:
2348 addend += ELF64_R_TYPE_DATA (rel->r_info);
2349 fprintf(outfile,
2350 " *(uint32_t *)(gen_code_ptr + %d) = "
2351 "((*(uint32_t *)(gen_code_ptr + %d)) "
2352 " & ~0x3ff) "
2353 " | ((%s + %d) & 0x3ff);\n",
4a1a1707 2354 reloc_offset, reloc_offset, relname, addend);
74ccb34e 2355 break;
d014c98c
FB		 2356 case R_SPARC_WDISP30:
2357 fprintf(outfile,
2358 " *(uint32_t *)(gen_code_ptr + %d) = "
2359 "((*(uint32_t *)(gen_code_ptr + %d)) "
2360 " & ~0x3fffffff) "
ae228531 2361 " | ((((%s + %d) - (long)(gen_code_ptr + %d))>>2) "
d014c98c 2362 " & 0x3fffffff);\n",
4a1a1707 2363 reloc_offset, reloc_offset, relname, addend,
3442e896 2364 reloc_offset);
d014c98c 2365 break;
74ccb34e
FB		 2366 case R_SPARC_WDISP22:
2367 fprintf(outfile,
2368 " *(uint32_t *)(gen_code_ptr + %d) = "
2369 "((*(uint32_t *)(gen_code_ptr + %d)) "
2370 " & ~0x3fffff) "
2371 " | ((((%s + %d) - (long)(gen_code_ptr + %d))>>2) "
2372 " & 0x3fffff);\n",
4a1a1707 2373 reloc_offset, reloc_offset, relname, addend,
74ccb34e
FB		 2374 reloc_offset);
2375 break;
b80029ca
TS		 2376 case R_SPARC_HH22:
2377 fprintf(outfile,
2378 " *(uint32_t *)(gen_code_ptr + %d) = "
2379 "((*(uint32_t *)(gen_code_ptr + %d)) "
2380 " & ~0x00000000) "
2381 " | (((%s + %d) >> 42) & 0x00000000);\n",
4a1a1707 2382 reloc_offset, reloc_offset, relname, addend);
b80029ca
TS		 2383 break;
2384
2385 case R_SPARC_LM22:
2386 fprintf(outfile,
2387 " *(uint32_t *)(gen_code_ptr + %d) = "
2388 "((*(uint32_t *)(gen_code_ptr + %d)) "
2389 " & ~0x00000000) "
2390 " | (((%s + %d) >> 10) & 0x00000000);\n",
4a1a1707 2391 reloc_offset, reloc_offset, relname, addend);
b80029ca
TS		 2392 break;
2393
2394 case R_SPARC_HM10:
2395 fprintf(outfile,
2396 " *(uint32_t *)(gen_code_ptr + %d) = "
2397 "((*(uint32_t *)(gen_code_ptr + %d)) "
2398 " & ~0x00000000) "
2399 " | ((((%s + %d) >> 32 & 0x3ff)) & 0x00000000);\n",
4a1a1707 2400 reloc_offset, reloc_offset, relname, addend);
b80029ca
TS		 2401 break;
2402
d014c98c 2403 default:
4a1a1707 2404 error("unsupported sparc64 relocation (%d) for symbol %s", type, relname);
d014c98c
FB		 2405 }
2406 }
2407 }
2408 }
38e584a0
FB		 2409#elif defined(HOST_M68K)
2410 {
4a1a1707 2411 char relname[256];
38e584a0
FB		 2412 int type;
2413 int addend;
3442e896 2414 int reloc_offset;
38e584a0
FB		 2415 Elf32_Sym *sym;
2416 for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
2417 if (rel->r_offset >= start_offset &&
2418 rel->r_offset < start_offset + copy_size) {
2419 sym = &(symtab[ELFW(R_SYM)(rel->r_info)]);
2420 sym_name = strtab + symtab[ELFW(R_SYM)(rel->r_info)].st_name;
4a1a1707 2421 get_reloc_expr(relname, sizeof(relname), sym_name);
38e584a0
FB		 2422 type = ELF32_R_TYPE(rel->r_info);
2423 addend = get32((uint32_t *)(text + rel->r_offset)) + rel->r_addend;
3442e896 2424 reloc_offset = rel->r_offset - start_offset;
38e584a0
FB		 2425 switch(type) {
2426 case R_68K_32:
2427 fprintf(outfile, " /* R_68K_32 RELOC, offset %x */\n", rel->r_offset) ;
5fafdf24 2428 fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %#x;\n",
4a1a1707 2429 reloc_offset, relname, addend );
38e584a0
FB		 2430 break;
2431 case R_68K_PC32:
2432 fprintf(outfile, " /* R_68K_PC32 RELOC, offset %x */\n", rel->r_offset);
5fafdf24 2433 fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s - (long)(gen_code_ptr + %#x) + %#x;\n",
4a1a1707 2434 reloc_offset, relname, reloc_offset, /*sym->st_value+*/ addend);
38e584a0
FB		 2435 break;
2436 default:
2437 error("unsupported m68k relocation (%d)", type);
2438 }
2439 }
2440 }
ff1f20a3 2441 }
f54b3f92
AJ		 2442#elif defined(HOST_HPPA)
2443 {
2444 char relname[256];
2445 int type, is_label;
2446 int addend;
2447 int reloc_offset;
2448 for (i = 0, rel = relocs; i < nb_relocs; i++, rel++) {
2449 if (rel->r_offset >= start_offset &&
2450 rel->r_offset < start_offset + copy_size) {
2451 sym_name = get_rel_sym_name(rel);
2452 sym_name = strtab + symtab[ELF32_R_SYM(rel->r_info)].st_name;
2453 is_label = get_reloc_expr(relname, sizeof(relname), sym_name);
2454 type = ELF32_R_TYPE(rel->r_info);
2455 addend = rel->r_addend;
2456 reloc_offset = rel->r_offset - start_offset;
2457
2458 if (is_label) {
2459 switch (type) {
2460 case R_PARISC_PCREL17F:
2461 fprintf(outfile,
2462" tcg_out_reloc(s, gen_code_ptr + %d, %d, %s, %d);\n",
2463 reloc_offset, type, relname, addend);
2464 break;
2465 default:
2466 error("unsupported hppa label relocation (%d)", type);
2467 }
2468 } else {
2469 switch (type) {
2470 case R_PARISC_DIR21L:
2471 fprintf(outfile,
2472" hppa_patch21l((uint32_t *)(gen_code_ptr + %d), %s, %d);\n",
2473 reloc_offset, relname, addend);
2474 break;
2475 case R_PARISC_DIR14R:
2476 fprintf(outfile,
2477" hppa_patch14r((uint32_t *)(gen_code_ptr + %d), %s, %d);\n",
2478 reloc_offset, relname, addend);
2479 break;
2480 case R_PARISC_PCREL17F:
2481 if (strstart(sym_name, "__op_gen_label", NULL)) {
2482 fprintf(outfile,
2483" hppa_patch17f((uint32_t *)(gen_code_ptr + %d), %s, %d);\n",
2484 reloc_offset, relname, addend);
2485 } else {
2486 fprintf(outfile,
2487" HPPA_RECORD_BRANCH(hppa_stubs, (uint32_t *)(gen_code_ptr + %d), %s);\n",
2488 reloc_offset, relname);
2489 }
2490 break;
2491 case R_PARISC_DPREL21L:
2492 if (strstart(sym_name, "__op_param", &p))
2493 fprintf(outfile,
2494" hppa_load_imm21l((uint32_t *)(gen_code_ptr + %d), param%s, %d);\n",
2495 reloc_offset, p, addend);
2496 else
2497 fprintf(outfile,
2498" hppa_patch21l_dprel((uint32_t *)(gen_code_ptr + %d), %s, %d);\n",
2499 reloc_offset, relname, addend);
2500 break;
2501 case R_PARISC_DPREL14R:
2502 if (strstart(sym_name, "__op_param", &p))
2503 fprintf(outfile,
2504" hppa_load_imm14r((uint32_t *)(gen_code_ptr + %d), param%s, %d);\n",
2505 reloc_offset, p, addend);
2506 else
2507 fprintf(outfile,
2508" hppa_patch14r_dprel((uint32_t *)(gen_code_ptr + %d), %s, %d);\n",
2509 reloc_offset, relname, addend);
2510 break;
2511 default:
2512 error("unsupported hppa relocation (%d)", type);
2513 }
2514 }
2515 }
2516 }
2517 }
9617efe8 2518#elif defined(HOST_MIPS) || defined(HOST_MIPS64)
c4b89d18
TS		 2519 {
2520 for (i = 0, rel = relocs; i < nb_relocs; i++, rel++) {
2521 if (rel->r_offset >= start_offset && rel->r_offset < start_offset + copy_size) {
4a1a1707 2522 char relname[256];
c4b89d18
TS		 2523 int type;
2524 int addend;
2525 int reloc_offset;
2526
2527 sym_name = strtab + symtab[ELF32_R_SYM(rel->r_info)].st_name;
2528 /* the compiler leave some unnecessary references to the code */
2529 if (sym_name[0] == '\0')
2530 continue;
4a1a1707 2531 get_reloc_expr(relname, sizeof(relname), sym_name);
c4b89d18
TS		 2532 type = ELF32_R_TYPE(rel->r_info);
2533 addend = get32((uint32_t *)(text + rel->r_offset));
2534 reloc_offset = rel->r_offset - start_offset;
2535 switch (type) {
9617efe8
TS		 2536 case R_MIPS_26:
2537 fprintf(outfile, " /* R_MIPS_26 RELOC, offset 0x%x, name %s */\n",
2538 rel->r_offset, sym_name);
2539 fprintf(outfile,
2540 " *(uint32_t *)(gen_code_ptr + 0x%x) = "
2541 "(0x%x & ~0x3fffff) "
2542 "| ((0x%x + ((%s - (*(uint32_t *)(gen_code_ptr + 0x%x))) >> 2)) "
2543 " & 0x3fffff);\n",
4a1a1707 2544 reloc_offset, addend, addend, relname, reloc_offset);
9617efe8 2545 break;
c4b89d18
TS		 2546 case R_MIPS_HI16:
2547 fprintf(outfile, " /* R_MIPS_HI16 RELOC, offset 0x%x, name %s */\n",
2548 rel->r_offset, sym_name);
2549 fprintf(outfile,
2550 " *(uint32_t *)(gen_code_ptr + 0x%x) = "
2551 "((*(uint32_t *)(gen_code_ptr + 0x%x)) "
2552 " & ~0xffff) "
2553 " | (((%s - 0x8000) >> 16) & 0xffff);\n",
4a1a1707 2554 reloc_offset, reloc_offset, relname);
c4b89d18
TS		 2555 break;
2556 case R_MIPS_LO16:
2557 fprintf(outfile, " /* R_MIPS_LO16 RELOC, offset 0x%x, name %s */\n",
2558 rel->r_offset, sym_name);
2559 fprintf(outfile,
2560 " *(uint32_t *)(gen_code_ptr + 0x%x) = "
2561 "((*(uint32_t *)(gen_code_ptr + 0x%x)) "
2562 " & ~0xffff) "
2563 " | (%s & 0xffff);\n",
4a1a1707 2564 reloc_offset, reloc_offset, relname);
c4b89d18
TS		 2565 break;
2566 case R_MIPS_PC16:
2567 fprintf(outfile, " /* R_MIPS_PC16 RELOC, offset 0x%x, name %s */\n",
2568 rel->r_offset, sym_name);
2569 fprintf(outfile,
2570 " *(uint32_t *)(gen_code_ptr + 0x%x) = "
2571 "(0x%x & ~0xffff) "
2572 "| ((0x%x + ((%s - (*(uint32_t *)(gen_code_ptr + 0x%x))) >> 2)) "
2573 " & 0xffff);\n",
4a1a1707 2574 reloc_offset, addend, addend, relname, reloc_offset);
c4b89d18
TS		 2575 break;
2576 case R_MIPS_GOT16:
2577 case R_MIPS_CALL16:
2578 fprintf(outfile, " /* R_MIPS_GOT16 RELOC, offset 0x%x, name %s */\n",
2579 rel->r_offset, sym_name);
2580 fprintf(outfile,
2581 " *(uint32_t *)(gen_code_ptr + 0x%x) = "
2582 "((*(uint32_t *)(gen_code_ptr + 0x%x)) "
2583 " & ~0xffff) "
2584 " | (((%s - 0x8000) >> 16) & 0xffff);\n",
4a1a1707 2585 reloc_offset, reloc_offset, relname);
c4b89d18
TS		 2586 break;
2587 default:
2588 error("unsupported MIPS relocation (%d)", type);
2589 }
2590 }
2591 }
2592 }
a2a64a1f
AZ		 2593#elif defined(HOST_ARM)
2594 error("dyngen targets not supported on ARM");
ce11fedc
FB		 2595#else
2596#error unsupported CPU
2597#endif
dc99065b
FB		 2598 fprintf(outfile, " gen_code_ptr += %d;\n", copy_size);
2599 fprintf(outfile, "}\n");
2600 fprintf(outfile, "break;\n\n");
2601 } else {
2602 fprintf(outfile, "static inline void gen_%s(", name);
2603 if (nb_args == 0) {
2604 fprintf(outfile, "void");
2605 } else {
2606 for(i = 0; i < nb_args; i++) {
2607 if (i != 0)
2608 fprintf(outfile, ", ");
2609 fprintf(outfile, "long param%d", i + 1);
367e86e8
FB		 2610 }
2611 }
dc99065b
FB		 2612 fprintf(outfile, ")\n");
2613 fprintf(outfile, "{\n");
2614 for(i = 0; i < nb_args; i++) {
2615 fprintf(outfile, " *gen_opparam_ptr++ = param%d;\n", i + 1);
2616 }
2617 fprintf(outfile, " *gen_opc_ptr++ = INDEX_%s;\n", name);
2618 fprintf(outfile, "}\n\n");
367e86e8 2619 }
367e86e8
FB		 2620}
2621
67b915a5 2622int gen_file(FILE *outfile, int out_type)
367e86e8 2623{
67b915a5
FB		 2624 int i;
2625 EXE_SYM *sym;
367e86e8 2626
d219f7e7 2627 if (out_type == OUT_INDEX_OP) {
dc99065b 2628 for(i = 0, sym = symtab; i < nb_syms; i++, sym++) {
82eec0a1 2629 const char *name;
67b915a5 2630 name = get_sym_name(sym);
82eec0a1 2631 if (strstart(name, OP_PREFIX, NULL)) {
67b915a5 2632 gen_code(name, sym->st_value, sym->st_size, outfile, 2);
dc99065b
FB		 2633 }
2634 }
d219f7e7
FB		 2635 } else if (out_type == OUT_GEN_OP) {
2636 /* generate gen_xxx functions */
d219f7e7
FB		 2637 for(i = 0, sym = symtab; i < nb_syms; i++, sym++) {
2638 const char *name;
67b915a5 2639 name = get_sym_name(sym);
d219f7e7 2640 if (strstart(name, OP_PREFIX, NULL)) {
82eec0a1 2641#if defined(CONFIG_FORMAT_ELF) || defined(CONFIG_FORMAT_COFF)
67b915a5 2642 if (sym->st_shndx != text_shndx)
d219f7e7 2643 error("invalid section for opcode (0x%x)", sym->st_shndx);
82eec0a1 2644#endif
67b915a5 2645 gen_code(name, sym->st_value, sym->st_size, outfile, 0);
d219f7e7
FB		 2646 }
2647 }
3b46e624 2648
dc99065b
FB		 2649 } else {
2650 /* generate big code generation switch */
46152182
PB		 2651
2652#ifdef HOST_ARM
a2a64a1f 2653 error("dyngen targets not supported on ARM");
ff1f20a3 2654#endif
b8076a74 2655#ifdef HOST_IA64
57fec1fe 2656#error broken
b8076a74
FB		 2657 {
2658 long addend, not_first = 0;
2659 unsigned long sym_idx;
2660 int index, max_index;
2661 const char *sym_name;
2662 EXE_RELOC *rel;
2663
2664 max_index = -1;
2665 for (i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
2666 sym_idx = ELF64_R_SYM(rel->r_info);
2667 sym_name = (strtab + symtab[sym_idx].st_name);
2668 if (strstart(sym_name, "__op_gen_label", NULL))
2669 continue;
2670 if (ELF64_R_TYPE(rel->r_info) != R_IA64_PCREL21B)
2671 continue;
2672
2673 addend = rel->r_addend;
2674 index = get_plt_index(sym_name, addend);
2675 if (index <= max_index)
2676 continue;
2677 max_index = index;
2678 fprintf(outfile, " extern void %s(void);\n", sym_name);
2679 }
2680
2681 fprintf(outfile,
2682 " struct ia64_fixup *plt_fixes = NULL, "
2683 "*ltoff_fixes = NULL;\n"
2684 " static long plt_target[] = {\n\t");
2685
2686 max_index = -1;
2687 for (i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
2688 sym_idx = ELF64_R_SYM(rel->r_info);
2689 sym_name = (strtab + symtab[sym_idx].st_name);
2690 if (strstart(sym_name, "__op_gen_label", NULL))
2691 continue;
2692 if (ELF64_R_TYPE(rel->r_info) != R_IA64_PCREL21B)
2693 continue;
2694
2695 addend = rel->r_addend;
2696 index = get_plt_index(sym_name, addend);
2697 if (index <= max_index)
2698 continue;
2699 max_index = index;
2700
2701 if (not_first)
2702 fprintf(outfile, ",\n\t");
2703 not_first = 1;
2704 if (addend)
2705 fprintf(outfile, "(long) &%s + %ld", sym_name, addend);
2706 else
2707 fprintf(outfile, "(long) &%s", sym_name);
2708 }
2709 fprintf(outfile, "\n };\n"
2710 " unsigned int plt_offset[%u] = { 0 };\n", max_index + 1);
2711 }
2712#endif
ff1f20a3 2713
dc99065b
FB		 2714 for(i = 0, sym = symtab; i < nb_syms; i++, sym++) {
2715 const char *name;
67b915a5 2716 name = get_sym_name(sym);
dc99065b 2717 if (strstart(name, OP_PREFIX, NULL)) {
367e86e8 2718#if 0
5fafdf24 2719 printf("%4d: %s pos=0x%08x len=%d\n",
dc99065b 2720 i, name, sym->st_value, sym->st_size);
367e86e8 2721#endif
82eec0a1 2722#if defined(CONFIG_FORMAT_ELF) || defined(CONFIG_FORMAT_COFF)
67b915a5 2723 if (sym->st_shndx != text_shndx)
dc99065b 2724 error("invalid section for opcode (0x%x)", sym->st_shndx);
82eec0a1 2725#endif
67b915a5 2726 gen_code(name, sym->st_value, sym->st_size, outfile, 1);
dc99065b
FB		 2727 }
2728 }
367e86e8
FB		 2729 }
2730
367e86e8
FB		 2731 return 0;
2732}
2733
2734void usage(void)
2735{
2736 printf("dyngen (c) 2003 Fabrice Bellard\n"
dc99065b
FB		 2737 "usage: dyngen [-o outfile] [-c] objfile\n"
2738 "Generate a dynamic code generator from an object file\n"
2739 "-c output enum of operations\n"
d219f7e7 2740 "-g output gen_op_xx() functions\n"
dc99065b 2741 );
367e86e8
FB		 2742 exit(1);
2743}
2744
2745int main(int argc, char **argv)
2746{
d219f7e7 2747 int c, out_type;
367e86e8
FB		 2748 const char *filename, *outfilename;
2749 FILE *outfile;
2750
2751 outfilename = "out.c";
d219f7e7 2752 out_type = OUT_CODE;
367e86e8 2753 for(;;) {
d219f7e7 2754 c = getopt(argc, argv, "ho:cg");
367e86e8
FB		 2755 if (c == -1)
2756 break;
2757 switch(c) {
2758 case 'h':
2759 usage();
2760 break;
2761 case 'o':
2762 outfilename = optarg;
2763 break;
dc99065b 2764 case 'c':
d219f7e7
FB		 2765 out_type = OUT_INDEX_OP;
2766 break;
2767 case 'g':
2768 out_type = OUT_GEN_OP;
dc99065b 2769 break;
367e86e8
FB		 2770 }
2771 }
2772 if (optind >= argc)
2773 usage();
2774 filename = argv[optind];
2775 outfile = fopen(outfilename, "w");
2776 if (!outfile)
2777 error("could not open '%s'", outfilename);
67b915a5
FB		 2778
2779 load_object(filename);
2780 gen_file(outfile, out_type);
367e86e8
FB		 2781 fclose(outfile);
2782 return 0;
2783}
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