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Multithreaded locking for mmap().
[qemu/mini2440.git] / dyngen.c
blobc38d12386f405481e70b7842cd27ac9e6d448347
1 /*
2 * Generic Dynamic compiler generator
3 *
4 * Copyright (c) 2003 Fabrice Bellard
5 *
6 * The COFF object format support was extracted from Kazu's QEMU port
7 * to Win32.
8 *
9 * Mach-O Support by Matt Reda and Pierre d'Herbemont
10 *
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 */
25 #include <stdlib.h>
26 #include <stdio.h>
27 #include <string.h>
28 #include <stdarg.h>
29 #include <inttypes.h>
30 #include <unistd.h>
31 #include <fcntl.h>
32
33 #include "config-host.h"
34
35 /* NOTE: we test CONFIG_WIN32 instead of _WIN32 to enabled cross
36 compilation */
37 #if defined(CONFIG_WIN32)
38 #define CONFIG_FORMAT_COFF
39 #elif defined(CONFIG_DARWIN)
40 #define CONFIG_FORMAT_MACH
41 #else
42 #define CONFIG_FORMAT_ELF
43 #endif
44
45 #ifdef CONFIG_FORMAT_ELF
46
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
57 #elif defined(HOST_X86_64)
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
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
77
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
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
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
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
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
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
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
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
142 #else
143 #error unsupported CPU - please update the code
144 #endif
145
146 #include "elf.h"
147
148 #if ELF_CLASS == ELFCLASS32
149 typedef int32_t host_long;
150 typedef uint32_t host_ulong;
151 #define swabls(x) swab32s(x)
152 #define swablss(x) swab32ss(x)
153 #else
154 typedef int64_t host_long;
155 typedef uint64_t host_ulong;
156 #define swabls(x) swab64s(x)
157 #define swablss(x) swab64ss(x)
158 #endif
159
160 #ifdef ELF_USES_RELOCA
161 #define SHT_RELOC SHT_RELA
162 #else
163 #define SHT_RELOC SHT_REL
164 #endif
165
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
173 typedef int32_t host_long;
174 typedef uint32_t host_ulong;
175
176 #include "a.out.h"
177
178 #define FILENAMELEN 256
179
180 typedef 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
189 typedef 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
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)
208 typedef int32_t host_long;
209 typedef uint32_t host_ulong;
210
211 struct nlist_extended
212 {
213 union {
214 char *n_name;
215 long n_strx;
216 } n_un;
217 unsigned char n_type;
218 unsigned char n_sect;
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
229 #include "bswap.h"
230
231 enum {
232 OUT_GEN_OP,
233 OUT_CODE,
234 OUT_INDEX_OP,
235 };
236
237 /* all dynamically generated functions begin with this code */
238 #define OP_PREFIX "op_"
239
240 int do_swap;
241
242 static void __attribute__((noreturn)) __attribute__((format (printf, 1, 2))) error(const char *fmt, ...)
243 {
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 }
252
253 static void *load_data(int fd, long offset, unsigned int size)
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;
266 }
267
268 int 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
284 void 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
301 void swab16s(uint16_t *p)
302 {
303 *p = bswap16(*p);
304 }
305
306 void swab32s(uint32_t *p)
307 {
308 *p = bswap32(*p);
309 }
310
311 void swab32ss(int32_t *p)
312 {
313 *p = bswap32(*p);
314 }
315
316 void swab64s(uint64_t *p)
317 {
318 *p = bswap64(*p);
319 }
320
321 void swab64ss(int64_t *p)
322 {
323 *p = bswap64(*p);
324 }
325
326 uint16_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
335 uint32_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
344 void put16(uint16_t *p, uint16_t val)
345 {
346 if (do_swap)
347 val = bswap16(val);
348 *p = val;
349 }
350
351 void put32(uint32_t *p, uint32_t val)
352 {
353 if (do_swap)
354 val = bswap32(val);
355 *p = val;
356 }
357
358 /* executable information */
359 EXE_SYM *symtab;
360 int nb_syms;
361 int text_shndx;
362 uint8_t *text;
363 EXE_RELOC *relocs;
364 int nb_relocs;
365
366 #ifdef CONFIG_FORMAT_ELF
367
368 /* ELF file info */
369 struct elf_shdr *shdr;
370 uint8_t **sdata;
371 struct elfhdr ehdr;
372 char *strtab;
373
374 int 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;
382 return (h->e_ident[EI_DATA] == ELFDATA2MSB) !=
383 (swaptest.b[0] == 0);
384 }
385
386 void elf_swap_ehdr(struct elfhdr *h)
387 {
388 swab16s(&h->e_type); /* Object file type */
389 swab16s(&h-> e_machine); /* Architecture */
390 swab32s(&h-> e_version); /* Object file version */
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 */
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
403 void elf_swap_shdr(struct elf_shdr *h)
404 {
405 swab32s(&h-> sh_name); /* Section name (string tbl index) */
406 swab32s(&h-> sh_type); /* Section type */
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 */
411 swab32s(&h-> sh_link); /* Link to another section */
412 swab32s(&h-> sh_info); /* Additional section information */
413 swabls(&h-> sh_addralign); /* Section alignment */
414 swabls(&h-> sh_entsize); /* Entry size if section holds table */
415 }
416
417 void elf_swap_phdr(struct elf_phdr *h)
418 {
419 swab32s(&h->p_type); /* Segment type */
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 */
425 swab32s(&h->p_flags); /* Segment flags */
426 swabls(&h->p_align); /* Segment alignment */
427 }
428
429 void elf_swap_rel(ELF_RELOC *rel)
430 {
431 swabls(&rel->r_offset);
432 swabls(&rel->r_info);
433 #ifdef ELF_USES_RELOCA
434 swablss(&rel->r_addend);
435 #endif
436 }
437
438 struct elf_shdr *find_elf_section(struct elf_shdr *shdr, int shnum, const char *shstr,
439 const char *name)
440 {
441 int i;
442 const char *shname;
443 struct elf_shdr *sec;
444
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
456 int find_reloc(int sh_index)
457 {
458 struct elf_shdr *sec;
459 int i;
460
461 for(i = 0; i < ehdr.e_shnum; i++) {
462 sec = &shdr[i];
463 if (sec->sh_type == SHT_RELOC && sec->sh_info == sh_index)
464 return i;
465 }
466 return 0;
467 }
468
469 static host_ulong get_rel_offset(EXE_RELOC *rel)
470 {
471 return rel->r_offset;
472 }
473
474 static char *get_rel_sym_name(EXE_RELOC *rel)
475 {
476 return strtab + symtab[ELFW(R_SYM)(rel->r_info)].st_name;
477 }
478
479 static char *get_sym_name(EXE_SYM *sym)
480 {
481 return strtab + sym->st_name;
482 }
483
484 /* load an elf object file */
485 int 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;
493
494 fd = open(filename, O_RDONLY);
495 if (fd < 0)
496 error("can't open file '%s'", filename);
497
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);
512 if (do_swap)
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);
534
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];
542 shstr = (char *)sdata[ehdr.e_shstrndx];
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];
578 strtab = (char *)sdata[symtab_sec->sh_link];
579
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 */
598 struct external_scnhdr *shdr;
599 uint8_t **sdata;
600 struct external_filehdr fhdr;
601 struct external_syment *coff_symtab;
602 char *strtab;
603 int coff_text_shndx, coff_data_shndx;
604
605 int 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
615 void sym_ent_name(struct external_syment *ext_sym, EXE_SYM *sym)
616 {
617 char *q;
618 int c, i, len;
619
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 }
639 }
640
641 char *name_for_dotdata(struct coff_rel *rel)
642 {
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) {
653
654 return sym->st_name;
655
656 }
657 }
658 return NULL;
659 }
660
661 static char *get_sym_name(EXE_SYM *sym)
662 {
663 return sym->st_name;
664 }
665
666 static char *get_rel_sym_name(EXE_RELOC *rel)
667 {
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);
672 if (name[0] == '.')
673 return NULL;
674 return name;
675 }
676
677 static host_ulong get_rel_offset(EXE_RELOC *rel)
678 {
679 return rel->r_offset;
680 }
681
682 struct external_scnhdr *find_coff_section(struct external_scnhdr *shdr, int shnum, const char *name)
683 {
684 int i;
685 const char *shname;
686 struct external_scnhdr *sec;
687
688 for(i = 0; i < shnum; i++) {
689 sec = &shdr[i];
690 if (!sec->s_name)
691 continue;
692 shname = sec->s_name;
693 if (!strcmp(shname, name))
694 return sec;
695 }
696 return NULL;
697 }
698
699 /* load a coff object file */
700 int load_object(const char *filename)
701 {
702 int fd;
703 struct external_scnhdr *sec, *text_sec, *data_sec;
704 int i;
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;
711 const char *p;
712 int aux_size, j;
713
714 fd = open(filename, O_RDONLY
715 #ifdef _WIN32
716 | O_BINARY
717 #endif
718 );
719 if (fd < 0)
720 error("can't open file '%s'", filename);
721
722 /* Read COFF header. */
723 if (read(fd, &fhdr, sizeof (fhdr)) != sizeof (fhdr))
724 error("unable to read file header");
725
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));
734
735 /* read all section data */
736 sdata = malloc(sizeof(void *) * fhdr.f_nscns);
737 memset(sdata, 0, sizeof(void *) * fhdr.f_nscns);
738
739 for(i = 0;i < fhdr.f_nscns; i++) {
740 sec = &shdr[i];
741 if (!strstart(sec->s_name, ".bss", &p))
742 sdata[i] = load_data(fd, sec->s_scnptr, sec->s_size);
743 }
744
745
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;
758
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");
764 }
765
766
767 n_strtab = load_data(fd, (fhdr.f_symptr + fhdr.f_nsyms*SYMESZ), STRTAB_SIZE);
768 strtab = load_data(fd, (fhdr.f_symptr + fhdr.f_nsyms*SYMESZ), *n_strtab);
769
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;
777 }
778
779 /* set coff symbol */
780 symtab = malloc(sizeof(struct coff_sym) * nb_syms);
781
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 }
815
816 sym->st_type = ext_sym->e_type;
817 sym->st_shndx = ext_sym->e_scnum;
818 }
819
820
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);
828 for (i = 0, ext_rel = coff_relocs, rel = relocs; i < nb_relocs;
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;
836 }
837
838 #endif /* CONFIG_FORMAT_COFF */
839
840 #ifdef CONFIG_FORMAT_MACH
841
842 /* File Header */
843 struct mach_header mach_hdr;
844
845 /* commands */
846 struct segment_command *segment = 0;
847 struct dysymtab_command *dysymtabcmd = 0;
848 struct symtab_command *symtabcmd = 0;
849
850 /* section */
851 struct section *section_hdr;
852 struct section *text_sec_hdr;
853 uint8_t **sdata;
854
855 /* relocs */
856 struct relocation_info *relocs;
857
858 /* symbols */
859 EXE_SYM *symtab;
860 struct nlist *symtab_std;
861 char *strtab;
862
863 /* indirect symbols */
864 uint32_t *tocdylib;
865
866 /* Utility functions */
867
868 static inline char *find_str_by_index(int index)
869 {
870 return strtab+index;
871 }
872
873 /* Used by dyngen common code */
874 static char *get_sym_name(EXE_SYM *sym)
875 {
876 char *name = find_str_by_index(sym->n_un.n_strx);
877
878 if ( sym->n_type & N_STAB ) /* Debug symbols are ignored */
879 return "debug";
880
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 */
890 static int find_mach_sec_index(struct section *section_hdr, int shnum, const char *segname,
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 */
906 struct section *find_mach_sec_hdr(struct section *section_hdr, int shnum, const char *segname,
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
916 static inline void fetch_next_pair_value(struct relocation_info * rel, unsigned int *value)
917 {
918 struct scattered_relocation_info * scarel;
919
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 */
933 static const char * find_sym_with_value_and_sec_number( int value, int sectnum, int * offset )
934 {
935 int i, ret = -1;
936
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
955 /*
956 * Find symbol name given a (virtual) address, and a section which is of type
957 * S_NON_LAZY_SYMBOL_POINTERS or S_LAZY_SYMBOL_POINTERS or S_SYMBOL_STUBS
958 */
959 static 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;
963
964 /* Sanity check */
965 if(!( address >= sec_hdr->addr && address < (sec_hdr->addr + sec_hdr->size) ) )
966 return (char*)0;
967
968 if( sec_hdr->flags & S_SYMBOL_STUBS ){
969 size = sec_hdr->reserved2;
970 if(size == 0)
971 error("size = 0");
972
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;
979
980 /* Compute our index in toc */
981 tocindex = (address - sec_hdr->addr)/size;
982 symindex = tocdylib[sec_hdr->reserved1 + tocindex];
983
984 name = get_sym_name(&symtab[symindex]);
985
986 return name;
987 }
988
989 static 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
1001 static 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;
1008
1009 /* init the slide value */
1010 *sslide = 0;
1011
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 */
1018 if ( symtab[rel->r_symbolnum].n_type & N_STAB )
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;
1025
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 {
1035 case PPC_RELOC_LO16: fetch_next_pair_value(rel+1, &other_half); sectoffset |= (other_half << 16);
1036 break;
1037 case PPC_RELOC_HI16: fetch_next_pair_value(rel+1, &other_half); sectoffset = (sectoffset << 16) | (uint16_t)(other_half & 0xffff);
1038 break;
1039 case PPC_RELOC_HA16: fetch_next_pair_value(rel+1, &other_half); sectoffset = (sectoffset << 16) + (int16_t)(other_half & 0xffff);
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;
1051
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);
1058
1059 return name;
1060 }
1061
1062 /* Used by dyngen common code */
1063 static 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 */
1070 static 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 */
1080 int 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;
1090
1091 fd = open(filename, O_RDONLY);
1092 if (fd < 0)
1093 error("can't open file '%s'", filename);
1094
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 }
1103
1104 if (mach_hdr.cputype != CPU_TYPE_POWERPC)
1105 error("Unsupported CPU");
1106
1107 if (mach_hdr.filetype != MH_OBJECT)
1108 error("Unsupported Mach Object");
1109
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);
1153
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 }
1158
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];
1165
1166 /* Make sure dysym was loaded */
1167 if(!(int)dysymtabcmd)
1168 error("could not find __DYSYMTAB segment");
1169
1170 /* read the table of content of the indirect sym */
1171 tocdylib = load_data( fd, dysymtabcmd->indirectsymoff, dysymtabcmd->nindirectsyms * sizeof(uint32_t) );
1172
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);
1180
1181 symtab = malloc(sizeof(EXE_SYM) * nb_syms);
1182
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++) {
1185 struct nlist *sym_follow, *sym_next = 0;
1186 unsigned int j;
1187 memset(sym, 0, sizeof(*sym));
1188
1189 if ( syment->n_type & N_STAB ) /* Debug symbols are skipped */
1190 continue;
1191
1192 memcpy(sym, syment, sizeof(*syment));
1193
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 }
1211
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
1222 /* return true if the expression is a label reference */
1223 int get_reloc_expr(char *name, int name_size, const char *sym_name)
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)) {
1230 snprintf(name, name_size, "param%s", p);
1231 return 1;
1232 } else {
1233 #if defined(HOST_SPARC) || defined(HOST_HPPA)
1234 if (sym_name[0] == '.')
1235 snprintf(name, name_size,
1236 "(long)(&__dot_%s)",
1237 sym_name + 1);
1238 else
1239 #endif
1240 snprintf(name, name_size, "(long)(&%s)", sym_name);
1241 }
1242 return 0;
1243 }
1244
1245 #ifdef HOST_IA64
1246
1247 #define PLT_ENTRY_SIZE 16 /* 1 bundle containing "brl" */
1248
1249 struct plt_entry {
1250 struct plt_entry *next;
1251 const char *name;
1252 unsigned long addend;
1253 } *plt_list;
1254
1255 static int
1256 get_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
1287 #define MAX_ARGS 3
1288
1289 /* generate op code */
1290 void gen_code(const char *name, host_ulong offset, host_ulong size,
1291 FILE *outfile, int gen_switch)
1292 {
1293 int copy_size = 0;
1294 uint8_t *p_start, *p_end;
1295 host_ulong start_offset;
1296 int nb_args, i, n;
1297 uint8_t args_present[MAX_ARGS];
1298 const char *sym_name, *p;
1299 EXE_RELOC *rel;
1300
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 */
1306 p_start = text + offset;
1307 p_end = p_start + size;
1308 start_offset = offset;
1309 #if defined(HOST_I386) || defined(HOST_X86_64)
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)
1319 error("ret or jmp expected at the end of %s", name);
1320 }
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);
1333 }
1334 copy_size = len;
1335 }
1336 #endif
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);
1353 if ((get16((uint16_t *)p) & 0xfff0) != 0x07f0)
1354 error("br expected at the end of %s", name);
1355 copy_size = p - p_start;
1356 }
1357 #elif defined(HOST_ALPHA)
1358 {
1359 uint8_t *p;
1360 p = p_end - 4;
1361 #if 0
1362 /* XXX: check why it occurs */
1363 if (p == p_start)
1364 error("empty code for %s", name);
1365 #endif
1366 if (get32((uint32_t *)p) != 0x6bfa8001)
1367 error("ret expected at the end of %s", name);
1368 copy_size = p - p_start;
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);
1380 copy_size = p_end - p_start;
1381 }
1382 #elif defined(HOST_SPARC)
1383 {
1384 #define INSN_SAVE 0x9de3a000
1385 #define INSN_RET 0x81c7e008
1386 #define INSN_RETL 0x81c3e008
1387 #define INSN_RESTORE 0x81e80000
1388 #define INSN_RETURN 0x81cfe008
1389 #define INSN_NOP 0x01000000
1390 #define INSN_ADD_SP 0x9c03a000 // add %sp, nn, %sp
1391 #define INSN_SUB_SP 0x9c23a000 // sub %sp, nn, %sp
1392
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));
1401 if (((start_insn & ~0x1fff) == INSN_SAVE) ||
1402 (start_insn & ~0x1fff) == INSN_ADD_SP) {
1403 p_start += 0x4;
1404 start_offset += 0x4;
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; */ ;
1409 else if (end_insn1 == INSN_RETL && (end_insn2 & ~0x1fff) == INSN_SUB_SP)
1410 /* SPARC v7: retl; sub %sp, nn, %sp; */ ;
1411 else
1412
1413 error("ret; restore; not found at end of %s", name);
1414 } else if (end_insn1 == INSN_RETL && end_insn2 == INSN_NOP) {
1415 ;
1416 } else {
1417 error("No save at the beginning of %s", name);
1418 }
1419 #if 0
1420 /* Skip a preceeding nop, if present. */
1421 if (p > p_start) {
1422 skip_insn = get32((uint32_t *)(p - 0x4));
1423 if (skip_insn == INSN_NOP)
1424 p -= 4;
1425 }
1426 #endif
1427 copy_size = p - p_start;
1428 }
1429 #elif defined(HOST_SPARC64)
1430 {
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
1440 uint32_t start_insn, end_insn1, end_insn2, skip_insn;
1441 uint8_t *p;
1442 p = (void *)(p_end - 8);
1443 #if 0
1444 /* XXX: check why it occurs */
1445 if (p <= p_start)
1446 error("empty code for %s", name);
1447 #endif
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));
1451 if (((start_insn & ~0x1fff) == INSN_SAVE) ||
1452 (start_insn & ~0x1fff) == INSN_ADD_SP) {
1453 p_start += 0x4;
1454 start_offset += 0x4;
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
1463 error("ret; restore; not found at end of %s", name);
1464 } else if (end_insn1 == INSN_RETL && end_insn2 == INSN_NOP) {
1465 ;
1466 } else {
1467 error("No save at the beginning of %s", name);
1468 }
1469
1470 #if 0
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 }
1477 #endif
1478
1479 copy_size = p - p_start;
1480 }
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) &&
1489 (p>p_start))
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 }
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 }
1532 #elif defined(HOST_MIPS) || defined(HOST_MIPS64)
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 }
1552 #elif defined(HOST_ARM)
1553 error("dyngen targets not supported on ARM");
1554 #else
1555 #error unsupported CPU
1556 #endif
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
1562 for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
1563 host_ulong offset = get_rel_offset(rel);
1564 if (offset >= start_offset &&
1565 offset < start_offset + (p_end - p_start)) {
1566 sym_name = get_rel_sym_name(rel);
1567 if(!sym_name)
1568 continue;
1569 if (strstart(sym_name, "__op_param", &p) ||
1570 strstart(sym_name, "__op_gen_label", &p)) {
1571 n = strtoul(p, NULL, 10);
1572 if (n > MAX_ARGS)
1573 error("too many arguments in %s", name);
1574 args_present[n - 1] = 1;
1575 }
1576 }
1577 }
1578
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
1587 if (gen_switch == 2) {
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
1618 } else if (gen_switch == 1) {
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");
1630 }
1631 #if defined(HOST_IA64)
1632 fprintf(outfile, " extern char %s;\n", name);
1633 #else
1634 fprintf(outfile, " extern void %s();\n", name);
1635 #endif
1636
1637 for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
1638 host_ulong offset = get_rel_offset(rel);
1639 if (offset >= start_offset &&
1640 offset < start_offset + (p_end - p_start)) {
1641 sym_name = get_rel_sym_name(rel);
1642 if(!sym_name)
1643 continue;
1644 if (*sym_name &&
1645 !strstart(sym_name, "__op_param", NULL) &&
1646 !strstart(sym_name, "__op_jmp", NULL) &&
1647 !strstart(sym_name, "__op_gen_label", NULL)) {
1648 #if defined(HOST_SPARC) || defined(HOST_HPPA)
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
1656 #if defined(__APPLE__)
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);
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);
1669 #else
1670 fprintf(outfile, "extern char %s;\n", sym_name);
1671 #endif
1672 }
1673 }
1674 }
1675
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
1680 fprintf(outfile, " memcpy(gen_code_ptr, (void *)((char *)&%s+%d), %d);\n",
1681 name, (int)(start_offset - offset), copy_size);
1682 #endif
1683
1684 /* emit code offset information */
1685 {
1686 EXE_SYM *sym;
1687 const char *sym_name, *p;
1688 host_ulong val;
1689 int n;
1690
1691 for(i = 0, sym = symtab; i < nb_syms; i++, sym++) {
1692 sym_name = get_sym_name(sym);
1693 if (strstart(sym_name, "__op_label", &p)) {
1694 uint8_t *ptr;
1695 unsigned long offset;
1696
1697 /* test if the variable refers to a label inside
1698 the code we are generating */
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 }
1707 #elif defined(CONFIG_FORMAT_MACH)
1708 if(!sym->n_sect)
1709 continue;
1710 ptr = sdata[sym->n_sect-1];
1711 #else
1712 ptr = sdata[sym->st_shndx];
1713 #endif
1714 if (!ptr)
1715 error("__op_labelN in invalid section");
1716 offset = sym->st_value;
1717 #ifdef CONFIG_FORMAT_MACH
1718 offset -= section_hdr[sym->n_sect-1].addr;
1719 #endif
1720 val = *(host_ulong *)(ptr + offset);
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) {
1728 nb_relocs1 = shdr[reloc_shndx].sh_size /
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) {
1733 val = rel->r_addend;
1734 break;
1735 }
1736 rel++;
1737 }
1738 }
1739 }
1740 #endif
1741 if (val >= start_offset && val <= start_offset + copy_size) {
1742 n = strtol(p, NULL, 10);
1743 fprintf(outfile, " label_offsets[%d] = %ld + (gen_code_ptr - gen_code_buf);\n", n, (long)(val - start_offset));
1744 }
1745 }
1746 }
1747 }
1748
1749 /* load parameters in variables */
1750 for(i = 0; i < nb_args; i++) {
1751 fprintf(outfile, " param%d = *opparam_ptr++;\n", i + 1);
1752 }
1753
1754 /* patch relocations */
1755 #if defined(HOST_I386)
1756 {
1757 char relname[256];
1758 int type, is_label;
1759 int addend;
1760 int reloc_offset;
1761 for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
1762 if (rel->r_offset >= start_offset &&
1763 rel->r_offset < start_offset + copy_size) {
1764 sym_name = get_rel_sym_name(rel);
1765 if (!sym_name)
1766 continue;
1767 reloc_offset = rel->r_offset - start_offset;
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",
1776 n, reloc_offset);
1777 continue;
1778 }
1779
1780 is_label = get_reloc_expr(relname, sizeof(relname), sym_name);
1781 addend = get32((uint32_t *)(text + rel->r_offset));
1782 #ifdef CONFIG_FORMAT_ELF
1783 type = ELF32_R_TYPE(rel->r_info);
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 }
1807 }
1808 #elif defined(CONFIG_FORMAT_COFF)
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 }
1822 type = rel->r_type;
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 }
1854 }
1855 #else
1856 #error unsupport object format
1857 #endif
1858 }
1859 }
1860 }
1861 #elif defined(HOST_X86_64)
1862 {
1863 char relname[256];
1864 int type, is_label;
1865 int addend;
1866 int reloc_offset;
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;
1871 is_label = get_reloc_expr(relname, sizeof(relname), sym_name);
1872 type = ELF32_R_TYPE(rel->r_info);
1873 addend = rel->r_addend;
1874 reloc_offset = rel->r_offset - start_offset;
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 }
1903 }
1904 }
1905 }
1906 }
1907 #elif defined(HOST_PPC)
1908 {
1909 #ifdef CONFIG_FORMAT_ELF
1910 char relname[256];
1911 int type;
1912 int addend;
1913 int is_label;
1914 int reloc_offset;
1915 for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
1916 if (rel->r_offset >= start_offset &&
1917 rel->r_offset < start_offset + copy_size) {
1918 sym_name = strtab + symtab[ELFW(R_SYM)(rel->r_info)].st_name;
1919 reloc_offset = rel->r_offset - start_offset;
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",
1928 n, reloc_offset);
1929 continue;
1930 }
1931
1932 get_reloc_expr(relname, sizeof(relname), sym_name);
1933 type = ELF32_R_TYPE(rel->r_info);
1934 is_label = get_reloc_expr(relname, sizeof(relname), sym_name);
1935 addend = rel->r_addend;
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 */
1966 fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = (*(uint32_t *)(gen_code_ptr + %d) & ~0x03fffffc) | ((%s - (long)(gen_code_ptr + %d) + %d) & 0x03fffffc);\n",
1967 reloc_offset, reloc_offset, relname, reloc_offset, addend);
1968 break;
1969 default:
1970 error("unsupported powerpc relocation (%d)", type);
1971 }
1972 }
1973 }
1974 }
1975 #elif defined(CONFIG_FORMAT_MACH)
1976 struct scattered_relocation_info *scarel;
1977 struct relocation_info * rel;
1978 char final_sym_name[256];
1979 const char *sym_name;
1980 const char *p;
1981 int slide, sslide;
1982 int i;
1983
1984 for(i = 0, rel = relocs; i < nb_relocs; i++, rel++) {
1985 unsigned int offset, length, value = 0;
1986 unsigned int type, pcrel, isym = 0;
1987 unsigned int usesym = 0;
1988
1989 if(R_SCATTERED & rel->r_address) {
1990 scarel = (struct scattered_relocation_info*)rel;
1991 offset = (unsigned int)scarel->r_address;
1992 length = scarel->r_length;
1993 pcrel = scarel->r_pcrel;
1994 type = scarel->r_type;
1995 value = scarel->r_value;
1996 } else {
1997 value = isym = rel->r_symbolnum;
1998 usesym = (rel->r_extern);
1999 offset = rel->r_address;
2000 length = rel->r_length;
2001 pcrel = rel->r_pcrel;
2002 type = rel->r_type;
2003 }
2004
2005 slide = offset - start_offset;
2006
2007 if (!(offset >= start_offset && offset < start_offset + size))
2008 continue; /* not in our range */
2009
2010 sym_name = get_reloc_name(rel, &sslide);
2011
2012 if(usesym && symtab[isym].n_type & N_STAB)
2013 continue; /* don't handle STAB (debug sym) */
2014
2015 if (sym_name && strstart(sym_name, "__op_jmp", &p)) {
2016 int n;
2017 n = strtol(p, NULL, 10);
2018 fprintf(outfile, " jmp_offsets[%d] = %d + (gen_code_ptr - gen_code_buf);\n",
2019 n, slide);
2020 continue; /* Nothing more to do */
2021 }
2022
2023 if(!sym_name) {
2024 fprintf(outfile, "/* #warning relocation not handled in %s (value 0x%x, %s, offset 0x%x, length 0x%x, %s, type 0x%x) */\n",
2025 name, value, usesym ? "use sym" : "don't use sym", offset, length, pcrel ? "pcrel":"", type);
2026 continue; /* dunno how to handle without final_sym_name */
2027 }
2028
2029 get_reloc_expr(final_sym_name, sizeof(final_sym_name),
2030 sym_name);
2031 switch(type) {
2032 case PPC_RELOC_BR24:
2033 if (!strstart(sym_name,"__op_gen_label",&p)) {
2034 fprintf(outfile, "{\n");
2035 fprintf(outfile, " uint32_t imm = *(uint32_t *)(gen_code_ptr + %d) & 0x3fffffc;\n", slide);
2036 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",
2037 slide, slide, name, sslide);
2038 fprintf(outfile, "}\n");
2039 } else {
2040 fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = (*(uint32_t *)(gen_code_ptr + %d) & ~0x03fffffc) | (((long)%s - (long)gen_code_ptr - %d) & 0x03fffffc);\n",
2041 slide, slide, final_sym_name, slide);
2042 }
2043 break;
2044 case PPC_RELOC_HI16:
2045 fprintf(outfile, " *(uint16_t *)(gen_code_ptr + %d + 2) = (%s + %d) >> 16;\n",
2046 slide, final_sym_name, sslide);
2047 break;
2048 case PPC_RELOC_LO16:
2049 fprintf(outfile, " *(uint16_t *)(gen_code_ptr + %d + 2) = (%s + %d);\n",
2050 slide, final_sym_name, sslide);
2051 break;
2052 case PPC_RELOC_HA16:
2053 fprintf(outfile, " *(uint16_t *)(gen_code_ptr + %d + 2) = (%s + %d + 0x8000) >> 16;\n",
2054 slide, final_sym_name, sslide);
2055 break;
2056 default:
2057 error("unsupported powerpc relocation (%d)", type);
2058 }
2059 }
2060 #else
2061 #error unsupport object format
2062 #endif
2063 }
2064 #elif defined(HOST_S390)
2065 {
2066 char relname[256];
2067 int type;
2068 int addend;
2069 int reloc_offset;
2070 for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
2071 if (rel->r_offset >= start_offset &&
2072 rel->r_offset < start_offset + copy_size) {
2073 sym_name = strtab + symtab[ELFW(R_SYM)(rel->r_info)].st_name;
2074 get_reloc_expr(relname, sizeof(relname), sym_name);
2075 type = ELF32_R_TYPE(rel->r_info);
2076 addend = rel->r_addend;
2077 reloc_offset = rel->r_offset - start_offset;
2078 switch(type) {
2079 case R_390_32:
2080 fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %d;\n",
2081 reloc_offset, relname, addend);
2082 break;
2083 case R_390_16:
2084 fprintf(outfile, " *(uint16_t *)(gen_code_ptr + %d) = %s + %d;\n",
2085 reloc_offset, relname, addend);
2086 break;
2087 case R_390_8:
2088 fprintf(outfile, " *(uint8_t *)(gen_code_ptr + %d) = %s + %d;\n",
2089 reloc_offset, relname, addend);
2090 break;
2091 case R_390_PC32DBL:
2092 if (ELF32_ST_TYPE(symtab[ELFW(R_SYM)(rel->r_info)].st_info) == STT_SECTION) {
2093 fprintf(outfile,
2094 " *(uint32_t *)(gen_code_ptr + %d) += "
2095 "((long)&%s - (long)gen_code_ptr) >> 1;\n",
2096 reloc_offset, name);
2097 }
2098 else
2099 fprintf(outfile,
2100 " *(uint32_t *)(gen_code_ptr + %d) = "
2101 "(%s + %d - ((uint32_t)gen_code_ptr + %d)) >> 1;\n",
2102 reloc_offset, relname, addend, reloc_offset);
2103 break;
2104 default:
2105 error("unsupported s390 relocation (%d)", type);
2106 }
2107 }
2108 }
2109 }
2110 #elif defined(HOST_ALPHA)
2111 {
2112 for (i = 0, rel = relocs; i < nb_relocs; i++, rel++) {
2113 if (rel->r_offset >= start_offset && rel->r_offset < start_offset + copy_size) {
2114 int type;
2115 long reloc_offset;
2116
2117 type = ELF64_R_TYPE(rel->r_info);
2118 sym_name = strtab + symtab[ELF64_R_SYM(rel->r_info)].st_name;
2119 reloc_offset = rel->r_offset - start_offset;
2120 switch (type) {
2121 case R_ALPHA_GPDISP:
2122 /* The gp is just 32 bit, and never changes, so it's easiest to emit it
2123 as an immediate instead of constructing it from the pv or ra. */
2124 fprintf(outfile, " immediate_ldah(gen_code_ptr + %ld, gp);\n",
2125 reloc_offset);
2126 fprintf(outfile, " immediate_lda(gen_code_ptr + %ld, gp);\n",
2127 reloc_offset + (int)rel->r_addend);
2128 break;
2129 case R_ALPHA_LITUSE:
2130 /* jsr to literal hint. Could be used to optimize to bsr. Ignore for
2131 now, since some called functions (libc) need pv to be set up. */
2132 break;
2133 case R_ALPHA_HINT:
2134 /* Branch target prediction hint. Ignore for now. Should be already
2135 correct for in-function jumps. */
2136 break;
2137 case R_ALPHA_LITERAL:
2138 /* Load a literal from the GOT relative to the gp. Since there's only a
2139 single gp, nothing is to be done. */
2140 break;
2141 case R_ALPHA_GPRELHIGH:
2142 /* Handle fake relocations against __op_param symbol. Need to emit the
2143 high part of the immediate value instead. Other symbols need no
2144 special treatment. */
2145 if (strstart(sym_name, "__op_param", &p))
2146 fprintf(outfile, " immediate_ldah(gen_code_ptr + %ld, param%s);\n",
2147 reloc_offset, p);
2148 break;
2149 case R_ALPHA_GPRELLOW:
2150 if (strstart(sym_name, "__op_param", &p))
2151 fprintf(outfile, " immediate_lda(gen_code_ptr + %ld, param%s);\n",
2152 reloc_offset, p);
2153 break;
2154 case R_ALPHA_BRSGP:
2155 /* PC-relative jump. Tweak offset to skip the two instructions that try to
2156 set up the gp from the pv. */
2157 fprintf(outfile, " fix_bsr(gen_code_ptr + %ld, (uint8_t *) &%s - (gen_code_ptr + %ld + 4) + 8);\n",
2158 reloc_offset, sym_name, reloc_offset);
2159 break;
2160 default:
2161 error("unsupported Alpha relocation (%d)", type);
2162 }
2163 }
2164 }
2165 }
2166 #elif defined(HOST_IA64)
2167 {
2168 unsigned long sym_idx;
2169 long code_offset;
2170 char relname[256];
2171 int type;
2172 long addend;
2173
2174 for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
2175 sym_idx = ELF64_R_SYM(rel->r_info);
2176 if (rel->r_offset < start_offset
2177 || rel->r_offset >= start_offset + copy_size)
2178 continue;
2179 sym_name = (strtab + symtab[sym_idx].st_name);
2180 code_offset = rel->r_offset - start_offset;
2181 if (strstart(sym_name, "__op_jmp", &p)) {
2182 int n;
2183 n = strtol(p, NULL, 10);
2184 /* __op_jmp relocations are done at
2185 runtime to do translated block
2186 chaining: the offset of the instruction
2187 needs to be stored */
2188 fprintf(outfile, " jmp_offsets[%d] ="
2189 "%ld + (gen_code_ptr - gen_code_buf);\n",
2190 n, code_offset);
2191 continue;
2192 }
2193 get_reloc_expr(relname, sizeof(relname), sym_name);
2194 type = ELF64_R_TYPE(rel->r_info);
2195 addend = rel->r_addend;
2196 switch(type) {
2197 case R_IA64_IMM64:
2198 fprintf(outfile,
2199 " ia64_imm64(gen_code_ptr + %ld, "
2200 "%s + %ld);\n",
2201 code_offset, relname, addend);
2202 break;
2203 case R_IA64_LTOFF22X:
2204 case R_IA64_LTOFF22:
2205 fprintf(outfile, " IA64_LTOFF(gen_code_ptr + %ld,"
2206 " %s + %ld, %d);\n",
2207 code_offset, relname, addend,
2208 (type == R_IA64_LTOFF22X));
2209 break;
2210 case R_IA64_LDXMOV:
2211 fprintf(outfile,
2212 " ia64_ldxmov(gen_code_ptr + %ld,"
2213 " %s + %ld);\n", code_offset, relname, addend);
2214 break;
2215
2216 case R_IA64_PCREL21B:
2217 if (strstart(sym_name, "__op_gen_label", NULL)) {
2218 fprintf(outfile,
2219 " ia64_imm21b(gen_code_ptr + %ld,"
2220 " (long) (%s + %ld -\n\t\t"
2221 "((long) gen_code_ptr + %ld)) >> 4);\n",
2222 code_offset, relname, addend,
2223 code_offset & ~0xfUL);
2224 } else {
2225 fprintf(outfile,
2226 " IA64_PLT(gen_code_ptr + %ld, "
2227 "%d);\t/* %s + %ld */\n",
2228 code_offset,
2229 get_plt_index(sym_name, addend),
2230 sym_name, addend);
2231 }
2232 break;
2233 default:
2234 error("unsupported ia64 relocation (0x%x)",
2235 type);
2236 }
2237 }
2238 fprintf(outfile, " ia64_nop_b(gen_code_ptr + %d);\n",
2239 copy_size - 16 + 2);
2240 }
2241 #elif defined(HOST_SPARC)
2242 {
2243 char relname[256];
2244 int type;
2245 int addend;
2246 int reloc_offset;
2247 for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
2248 if (rel->r_offset >= start_offset &&
2249 rel->r_offset < start_offset + copy_size) {
2250 sym_name = strtab + symtab[ELF32_R_SYM(rel->r_info)].st_name;
2251 get_reloc_expr(relname, sizeof(relname), sym_name);
2252 type = ELF32_R_TYPE(rel->r_info);
2253 addend = rel->r_addend;
2254 reloc_offset = rel->r_offset - start_offset;
2255 switch(type) {
2256 case R_SPARC_32:
2257 fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %d;\n",
2258 reloc_offset, relname, addend);
2259 break;
2260 case R_SPARC_HI22:
2261 fprintf(outfile,
2262 " *(uint32_t *)(gen_code_ptr + %d) = "
2263 "((*(uint32_t *)(gen_code_ptr + %d)) "
2264 " & ~0x3fffff) "
2265 " | (((%s + %d) >> 10) & 0x3fffff);\n",
2266 reloc_offset, reloc_offset, relname, addend);
2267 break;
2268 case R_SPARC_LO10:
2269 fprintf(outfile,
2270 " *(uint32_t *)(gen_code_ptr + %d) = "
2271 "((*(uint32_t *)(gen_code_ptr + %d)) "
2272 " & ~0x3ff) "
2273 " | ((%s + %d) & 0x3ff);\n",
2274 reloc_offset, reloc_offset, relname, addend);
2275 break;
2276 case R_SPARC_WDISP30:
2277 fprintf(outfile,
2278 " *(uint32_t *)(gen_code_ptr + %d) = "
2279 "((*(uint32_t *)(gen_code_ptr + %d)) "
2280 " & ~0x3fffffff) "
2281 " | ((((%s + %d) - (long)(gen_code_ptr + %d))>>2) "
2282 " & 0x3fffffff);\n",
2283 reloc_offset, reloc_offset, relname, addend,
2284 reloc_offset);
2285 break;
2286 case R_SPARC_WDISP22:
2287 fprintf(outfile,
2288 " *(uint32_t *)(gen_code_ptr + %d) = "
2289 "((*(uint32_t *)(gen_code_ptr + %d)) "
2290 " & ~0x3fffff) "
2291 " | ((((%s + %d) - (long)(gen_code_ptr + %d))>>2) "
2292 " & 0x3fffff);\n",
2293 rel->r_offset - start_offset,
2294 rel->r_offset - start_offset,
2295 relname, addend,
2296 rel->r_offset - start_offset);
2297 break;
2298 default:
2299 error("unsupported sparc relocation (%d)", type);
2300 }
2301 }
2302 }
2303 }
2304 #elif defined(HOST_SPARC64)
2305 {
2306 char relname[256];
2307 int type;
2308 int addend;
2309 int reloc_offset;
2310 for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
2311 if (rel->r_offset >= start_offset &&
2312 rel->r_offset < start_offset + copy_size) {
2313 sym_name = strtab + symtab[ELF64_R_SYM(rel->r_info)].st_name;
2314 get_reloc_expr(relname, sizeof(relname), sym_name);
2315 type = ELF32_R_TYPE(rel->r_info);
2316 addend = rel->r_addend;
2317 reloc_offset = rel->r_offset - start_offset;
2318 switch(type) {
2319 case R_SPARC_32:
2320 fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %d;\n",
2321 reloc_offset, relname, addend);
2322 break;
2323 case R_SPARC_HI22:
2324 fprintf(outfile,
2325 " *(uint32_t *)(gen_code_ptr + %d) = "
2326 "((*(uint32_t *)(gen_code_ptr + %d)) "
2327 " & ~0x3fffff) "
2328 " | (((%s + %d) >> 10) & 0x3fffff);\n",
2329 reloc_offset, reloc_offset, relname, addend);
2330 break;
2331 case R_SPARC_LO10:
2332 fprintf(outfile,
2333 " *(uint32_t *)(gen_code_ptr + %d) = "
2334 "((*(uint32_t *)(gen_code_ptr + %d)) "
2335 " & ~0x3ff) "
2336 " | ((%s + %d) & 0x3ff);\n",
2337 reloc_offset, reloc_offset, relname, addend);
2338 break;
2339 case R_SPARC_OLO10:
2340 addend += ELF64_R_TYPE_DATA (rel->r_info);
2341 fprintf(outfile,
2342 " *(uint32_t *)(gen_code_ptr + %d) = "
2343 "((*(uint32_t *)(gen_code_ptr + %d)) "
2344 " & ~0x3ff) "
2345 " | ((%s + %d) & 0x3ff);\n",
2346 reloc_offset, reloc_offset, relname, addend);
2347 break;
2348 case R_SPARC_WDISP30:
2349 fprintf(outfile,
2350 " *(uint32_t *)(gen_code_ptr + %d) = "
2351 "((*(uint32_t *)(gen_code_ptr + %d)) "
2352 " & ~0x3fffffff) "
2353 " | ((((%s + %d) - (long)(gen_code_ptr + %d))>>2) "
2354 " & 0x3fffffff);\n",
2355 reloc_offset, reloc_offset, relname, addend,
2356 reloc_offset);
2357 break;
2358 case R_SPARC_WDISP22:
2359 fprintf(outfile,
2360 " *(uint32_t *)(gen_code_ptr + %d) = "
2361 "((*(uint32_t *)(gen_code_ptr + %d)) "
2362 " & ~0x3fffff) "
2363 " | ((((%s + %d) - (long)(gen_code_ptr + %d))>>2) "
2364 " & 0x3fffff);\n",
2365 reloc_offset, reloc_offset, relname, addend,
2366 reloc_offset);
2367 break;
2368 case R_SPARC_HH22:
2369 fprintf(outfile,
2370 " *(uint32_t *)(gen_code_ptr + %d) = "
2371 "((*(uint32_t *)(gen_code_ptr + %d)) "
2372 " & ~0x00000000) "
2373 " | (((%s + %d) >> 42) & 0x00000000);\n",
2374 reloc_offset, reloc_offset, relname, addend);
2375 break;
2376
2377 case R_SPARC_LM22:
2378 fprintf(outfile,
2379 " *(uint32_t *)(gen_code_ptr + %d) = "
2380 "((*(uint32_t *)(gen_code_ptr + %d)) "
2381 " & ~0x00000000) "
2382 " | (((%s + %d) >> 10) & 0x00000000);\n",
2383 reloc_offset, reloc_offset, relname, addend);
2384 break;
2385
2386 case R_SPARC_HM10:
2387 fprintf(outfile,
2388 " *(uint32_t *)(gen_code_ptr + %d) = "
2389 "((*(uint32_t *)(gen_code_ptr + %d)) "
2390 " & ~0x00000000) "
2391 " | ((((%s + %d) >> 32 & 0x3ff)) & 0x00000000);\n",
2392 reloc_offset, reloc_offset, relname, addend);
2393 break;
2394
2395 default:
2396 error("unsupported sparc64 relocation (%d) for symbol %s", type, relname);
2397 }
2398 }
2399 }
2400 }
2401 #elif defined(HOST_M68K)
2402 {
2403 char relname[256];
2404 int type;
2405 int addend;
2406 int reloc_offset;
2407 Elf32_Sym *sym;
2408 for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
2409 if (rel->r_offset >= start_offset &&
2410 rel->r_offset < start_offset + copy_size) {
2411 sym = &(symtab[ELFW(R_SYM)(rel->r_info)]);
2412 sym_name = strtab + symtab[ELFW(R_SYM)(rel->r_info)].st_name;
2413 get_reloc_expr(relname, sizeof(relname), sym_name);
2414 type = ELF32_R_TYPE(rel->r_info);
2415 addend = get32((uint32_t *)(text + rel->r_offset)) + rel->r_addend;
2416 reloc_offset = rel->r_offset - start_offset;
2417 switch(type) {
2418 case R_68K_32:
2419 fprintf(outfile, " /* R_68K_32 RELOC, offset %x */\n", rel->r_offset) ;
2420 fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %#x;\n",
2421 reloc_offset, relname, addend );
2422 break;
2423 case R_68K_PC32:
2424 fprintf(outfile, " /* R_68K_PC32 RELOC, offset %x */\n", rel->r_offset);
2425 fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s - (long)(gen_code_ptr + %#x) + %#x;\n",
2426 reloc_offset, relname, reloc_offset, /*sym->st_value+*/ addend);
2427 break;
2428 default:
2429 error("unsupported m68k relocation (%d)", type);
2430 }
2431 }
2432 }
2433 }
2434 #elif defined(HOST_HPPA)
2435 {
2436 char relname[256];
2437 int type, is_label;
2438 int addend;
2439 int reloc_offset;
2440 for (i = 0, rel = relocs; i < nb_relocs; i++, rel++) {
2441 if (rel->r_offset >= start_offset &&
2442 rel->r_offset < start_offset + copy_size) {
2443 sym_name = get_rel_sym_name(rel);
2444 sym_name = strtab + symtab[ELF32_R_SYM(rel->r_info)].st_name;
2445 is_label = get_reloc_expr(relname, sizeof(relname), sym_name);
2446 type = ELF32_R_TYPE(rel->r_info);
2447 addend = rel->r_addend;
2448 reloc_offset = rel->r_offset - start_offset;
2449
2450 if (is_label) {
2451 switch (type) {
2452 case R_PARISC_PCREL17F:
2453 fprintf(outfile,
2454 " tcg_out_reloc(s, gen_code_ptr + %d, %d, %s, %d);\n",
2455 reloc_offset, type, relname, addend);
2456 break;
2457 default:
2458 error("unsupported hppa label relocation (%d)", type);
2459 }
2460 } else {
2461 switch (type) {
2462 case R_PARISC_DIR21L:
2463 fprintf(outfile,
2464 " hppa_patch21l((uint32_t *)(gen_code_ptr + %d), %s, %d);\n",
2465 reloc_offset, relname, addend);
2466 break;
2467 case R_PARISC_DIR14R:
2468 fprintf(outfile,
2469 " hppa_patch14r((uint32_t *)(gen_code_ptr + %d), %s, %d);\n",
2470 reloc_offset, relname, addend);
2471 break;
2472 case R_PARISC_PCREL17F:
2473 if (strstart(sym_name, "__op_gen_label", NULL)) {
2474 fprintf(outfile,
2475 " hppa_patch17f((uint32_t *)(gen_code_ptr + %d), %s, %d);\n",
2476 reloc_offset, relname, addend);
2477 } else {
2478 fprintf(outfile,
2479 " HPPA_RECORD_BRANCH(hppa_stubs, (uint32_t *)(gen_code_ptr + %d), %s);\n",
2480 reloc_offset, relname);
2481 }
2482 break;
2483 case R_PARISC_DPREL21L:
2484 if (strstart(sym_name, "__op_param", &p))
2485 fprintf(outfile,
2486 " hppa_load_imm21l((uint32_t *)(gen_code_ptr + %d), param%s, %d);\n",
2487 reloc_offset, p, addend);
2488 else
2489 fprintf(outfile,
2490 " hppa_patch21l_dprel((uint32_t *)(gen_code_ptr + %d), %s, %d);\n",
2491 reloc_offset, relname, addend);
2492 break;
2493 case R_PARISC_DPREL14R:
2494 if (strstart(sym_name, "__op_param", &p))
2495 fprintf(outfile,
2496 " hppa_load_imm14r((uint32_t *)(gen_code_ptr + %d), param%s, %d);\n",
2497 reloc_offset, p, addend);
2498 else
2499 fprintf(outfile,
2500 " hppa_patch14r_dprel((uint32_t *)(gen_code_ptr + %d), %s, %d);\n",
2501 reloc_offset, relname, addend);
2502 break;
2503 default:
2504 error("unsupported hppa relocation (%d)", type);
2505 }
2506 }
2507 }
2508 }
2509 }
2510 #elif defined(HOST_MIPS) || defined(HOST_MIPS64)
2511 {
2512 for (i = 0, rel = relocs; i < nb_relocs; i++, rel++) {
2513 if (rel->r_offset >= start_offset && rel->r_offset < start_offset + copy_size) {
2514 char relname[256];
2515 int type;
2516 int addend;
2517 int reloc_offset;
2518
2519 sym_name = strtab + symtab[ELF32_R_SYM(rel->r_info)].st_name;
2520 /* the compiler leave some unnecessary references to the code */
2521 if (sym_name[0] == '\0')
2522 continue;
2523 get_reloc_expr(relname, sizeof(relname), sym_name);
2524 type = ELF32_R_TYPE(rel->r_info);
2525 addend = get32((uint32_t *)(text + rel->r_offset));
2526 reloc_offset = rel->r_offset - start_offset;
2527 switch (type) {
2528 case R_MIPS_26:
2529 fprintf(outfile, " /* R_MIPS_26 RELOC, offset 0x%x, name %s */\n",
2530 rel->r_offset, sym_name);
2531 fprintf(outfile,
2532 " *(uint32_t *)(gen_code_ptr + 0x%x) = "
2533 "(0x%x & ~0x3fffff) "
2534 "| ((0x%x + ((%s - (*(uint32_t *)(gen_code_ptr + 0x%x))) >> 2)) "
2535 " & 0x3fffff);\n",
2536 reloc_offset, addend, addend, relname, reloc_offset);
2537 break;
2538 case R_MIPS_HI16:
2539 fprintf(outfile, " /* R_MIPS_HI16 RELOC, offset 0x%x, name %s */\n",
2540 rel->r_offset, sym_name);
2541 fprintf(outfile,
2542 " *(uint32_t *)(gen_code_ptr + 0x%x) = "
2543 "((*(uint32_t *)(gen_code_ptr + 0x%x)) "
2544 " & ~0xffff) "
2545 " | (((%s - 0x8000) >> 16) & 0xffff);\n",
2546 reloc_offset, reloc_offset, relname);
2547 break;
2548 case R_MIPS_LO16:
2549 fprintf(outfile, " /* R_MIPS_LO16 RELOC, offset 0x%x, name %s */\n",
2550 rel->r_offset, sym_name);
2551 fprintf(outfile,
2552 " *(uint32_t *)(gen_code_ptr + 0x%x) = "
2553 "((*(uint32_t *)(gen_code_ptr + 0x%x)) "
2554 " & ~0xffff) "
2555 " | (%s & 0xffff);\n",
2556 reloc_offset, reloc_offset, relname);
2557 break;
2558 case R_MIPS_PC16:
2559 fprintf(outfile, " /* R_MIPS_PC16 RELOC, offset 0x%x, name %s */\n",
2560 rel->r_offset, sym_name);
2561 fprintf(outfile,
2562 " *(uint32_t *)(gen_code_ptr + 0x%x) = "
2563 "(0x%x & ~0xffff) "
2564 "| ((0x%x + ((%s - (*(uint32_t *)(gen_code_ptr + 0x%x))) >> 2)) "
2565 " & 0xffff);\n",
2566 reloc_offset, addend, addend, relname, reloc_offset);
2567 break;
2568 case R_MIPS_GOT16:
2569 case R_MIPS_CALL16:
2570 fprintf(outfile, " /* R_MIPS_GOT16 RELOC, offset 0x%x, name %s */\n",
2571 rel->r_offset, sym_name);
2572 fprintf(outfile,
2573 " *(uint32_t *)(gen_code_ptr + 0x%x) = "
2574 "((*(uint32_t *)(gen_code_ptr + 0x%x)) "
2575 " & ~0xffff) "
2576 " | (((%s - 0x8000) >> 16) & 0xffff);\n",
2577 reloc_offset, reloc_offset, relname);
2578 break;
2579 default:
2580 error("unsupported MIPS relocation (%d)", type);
2581 }
2582 }
2583 }
2584 }
2585 #elif defined(HOST_ARM)
2586 error("dyngen targets not supported on ARM");
2587 #else
2588 #error unsupported CPU
2589 #endif
2590 fprintf(outfile, " gen_code_ptr += %d;\n", copy_size);
2591 fprintf(outfile, "}\n");
2592 fprintf(outfile, "break;\n\n");
2593 } else {
2594 fprintf(outfile, "static inline void gen_%s(", name);
2595 if (nb_args == 0) {
2596 fprintf(outfile, "void");
2597 } else {
2598 for(i = 0; i < nb_args; i++) {
2599 if (i != 0)
2600 fprintf(outfile, ", ");
2601 fprintf(outfile, "long param%d", i + 1);
2602 }
2603 }
2604 fprintf(outfile, ")\n");
2605 fprintf(outfile, "{\n");
2606 for(i = 0; i < nb_args; i++) {
2607 fprintf(outfile, " *gen_opparam_ptr++ = param%d;\n", i + 1);
2608 }
2609 fprintf(outfile, " *gen_opc_ptr++ = INDEX_%s;\n", name);
2610 fprintf(outfile, "}\n\n");
2611 }
2612 }
2613
2614 int gen_file(FILE *outfile, int out_type)
2615 {
2616 int i;
2617 EXE_SYM *sym;
2618
2619 if (out_type == OUT_INDEX_OP) {
2620 for(i = 0, sym = symtab; i < nb_syms; i++, sym++) {
2621 const char *name;
2622 name = get_sym_name(sym);
2623 if (strstart(name, OP_PREFIX, NULL)) {
2624 gen_code(name, sym->st_value, sym->st_size, outfile, 2);
2625 }
2626 }
2627 } else if (out_type == OUT_GEN_OP) {
2628 /* generate gen_xxx functions */
2629 for(i = 0, sym = symtab; i < nb_syms; i++, sym++) {
2630 const char *name;
2631 name = get_sym_name(sym);
2632 if (strstart(name, OP_PREFIX, NULL)) {
2633 #if defined(CONFIG_FORMAT_ELF) || defined(CONFIG_FORMAT_COFF)
2634 if (sym->st_shndx != text_shndx)
2635 error("invalid section for opcode (0x%x)", sym->st_shndx);
2636 #endif
2637 gen_code(name, sym->st_value, sym->st_size, outfile, 0);
2638 }
2639 }
2640
2641 } else {
2642 /* generate big code generation switch */
2643
2644 #ifdef HOST_ARM
2645 error("dyngen targets not supported on ARM");
2646 #endif
2647 #ifdef HOST_IA64
2648 #error broken
2649 {
2650 long addend, not_first = 0;
2651 unsigned long sym_idx;
2652 int index, max_index;
2653 const char *sym_name;
2654 EXE_RELOC *rel;
2655
2656 max_index = -1;
2657 for (i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
2658 sym_idx = ELF64_R_SYM(rel->r_info);
2659 sym_name = (strtab + symtab[sym_idx].st_name);
2660 if (strstart(sym_name, "__op_gen_label", NULL))
2661 continue;
2662 if (ELF64_R_TYPE(rel->r_info) != R_IA64_PCREL21B)
2663 continue;
2664
2665 addend = rel->r_addend;
2666 index = get_plt_index(sym_name, addend);
2667 if (index <= max_index)
2668 continue;
2669 max_index = index;
2670 fprintf(outfile, " extern void %s(void);\n", sym_name);
2671 }
2672
2673 fprintf(outfile,
2674 " struct ia64_fixup *plt_fixes = NULL, "
2675 "*ltoff_fixes = NULL;\n"
2676 " static long plt_target[] = {\n\t");
2677
2678 max_index = -1;
2679 for (i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
2680 sym_idx = ELF64_R_SYM(rel->r_info);
2681 sym_name = (strtab + symtab[sym_idx].st_name);
2682 if (strstart(sym_name, "__op_gen_label", NULL))
2683 continue;
2684 if (ELF64_R_TYPE(rel->r_info) != R_IA64_PCREL21B)
2685 continue;
2686
2687 addend = rel->r_addend;
2688 index = get_plt_index(sym_name, addend);
2689 if (index <= max_index)
2690 continue;
2691 max_index = index;
2692
2693 if (not_first)
2694 fprintf(outfile, ",\n\t");
2695 not_first = 1;
2696 if (addend)
2697 fprintf(outfile, "(long) &%s + %ld", sym_name, addend);
2698 else
2699 fprintf(outfile, "(long) &%s", sym_name);
2700 }
2701 fprintf(outfile, "\n };\n"
2702 " unsigned int plt_offset[%u] = { 0 };\n", max_index + 1);
2703 }
2704 #endif
2705
2706 for(i = 0, sym = symtab; i < nb_syms; i++, sym++) {
2707 const char *name;
2708 name = get_sym_name(sym);
2709 if (strstart(name, OP_PREFIX, NULL)) {
2710 #if 0
2711 printf("%4d: %s pos=0x%08x len=%d\n",
2712 i, name, sym->st_value, sym->st_size);
2713 #endif
2714 #if defined(CONFIG_FORMAT_ELF) || defined(CONFIG_FORMAT_COFF)
2715 if (sym->st_shndx != text_shndx)
2716 error("invalid section for opcode (0x%x)", sym->st_shndx);
2717 #endif
2718 gen_code(name, sym->st_value, sym->st_size, outfile, 1);
2719 }
2720 }
2721 }
2722
2723 return 0;
2724 }
2725
2726 void usage(void)
2727 {
2728 printf("dyngen (c) 2003 Fabrice Bellard\n"
2729 "usage: dyngen [-o outfile] [-c] objfile\n"
2730 "Generate a dynamic code generator from an object file\n"
2731 "-c output enum of operations\n"
2732 "-g output gen_op_xx() functions\n"
2733 );
2734 exit(1);
2735 }
2736
2737 int main(int argc, char **argv)
2738 {
2739 int c, out_type;
2740 const char *filename, *outfilename;
2741 FILE *outfile;
2742
2743 outfilename = "out.c";
2744 out_type = OUT_CODE;
2745 for(;;) {
2746 c = getopt(argc, argv, "ho:cg");
2747 if (c == -1)
2748 break;
2749 switch(c) {
2750 case 'h':
2751 usage();
2752 break;
2753 case 'o':
2754 outfilename = optarg;
2755 break;
2756 case 'c':
2757 out_type = OUT_INDEX_OP;
2758 break;
2759 case 'g':
2760 out_type = OUT_GEN_OP;
2761 break;
2762 }
2763 }
2764 if (optind >= argc)
2765 usage();
2766 filename = argv[optind];
2767 outfile = fopen(outfilename, "w");
2768 if (!outfile)
2769 error("could not open '%s'", outfilename);
2770
2771 load_object(filename);
2772 gen_file(outfile, out_type);
2773 fclose(outfile);
2774 return 0;
2775 }
Samsung s3c2440 and arm920t support for the mini2440 dev board