forked from sergev/qemu
-
Notifications
You must be signed in to change notification settings - Fork 0
/
elfload.c
2755 lines (2351 loc) · 83 KB
/
elfload.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/* This is the Linux kernel elf-loading code, ported into user space */
#include <sys/time.h>
#include <sys/param.h>
#include <stdio.h>
#include <sys/types.h>
#include <fcntl.h>
#include <errno.h>
#include <unistd.h>
#include <sys/mman.h>
#include <sys/resource.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "qemu.h"
#include "disas.h"
#ifdef _ARCH_PPC64
#undef ARCH_DLINFO
#undef ELF_PLATFORM
#undef ELF_HWCAP
#undef ELF_CLASS
#undef ELF_DATA
#undef ELF_ARCH
#endif
#define ELF_OSABI ELFOSABI_SYSV
/* from personality.h */
/*
* Flags for bug emulation.
*
* These occupy the top three bytes.
*/
enum {
ADDR_NO_RANDOMIZE = 0x0040000, /* disable randomization of VA space */
FDPIC_FUNCPTRS = 0x0080000, /* userspace function ptrs point to
descriptors (signal handling) */
MMAP_PAGE_ZERO = 0x0100000,
ADDR_COMPAT_LAYOUT = 0x0200000,
READ_IMPLIES_EXEC = 0x0400000,
ADDR_LIMIT_32BIT = 0x0800000,
SHORT_INODE = 0x1000000,
WHOLE_SECONDS = 0x2000000,
STICKY_TIMEOUTS = 0x4000000,
ADDR_LIMIT_3GB = 0x8000000,
};
/*
* Personality types.
*
* These go in the low byte. Avoid using the top bit, it will
* conflict with error returns.
*/
enum {
PER_LINUX = 0x0000,
PER_LINUX_32BIT = 0x0000 | ADDR_LIMIT_32BIT,
PER_LINUX_FDPIC = 0x0000 | FDPIC_FUNCPTRS,
PER_SVR4 = 0x0001 | STICKY_TIMEOUTS | MMAP_PAGE_ZERO,
PER_SVR3 = 0x0002 | STICKY_TIMEOUTS | SHORT_INODE,
PER_SCOSVR3 = 0x0003 | STICKY_TIMEOUTS | WHOLE_SECONDS | SHORT_INODE,
PER_OSR5 = 0x0003 | STICKY_TIMEOUTS | WHOLE_SECONDS,
PER_WYSEV386 = 0x0004 | STICKY_TIMEOUTS | SHORT_INODE,
PER_ISCR4 = 0x0005 | STICKY_TIMEOUTS,
PER_BSD = 0x0006,
PER_SUNOS = 0x0006 | STICKY_TIMEOUTS,
PER_XENIX = 0x0007 | STICKY_TIMEOUTS | SHORT_INODE,
PER_LINUX32 = 0x0008,
PER_LINUX32_3GB = 0x0008 | ADDR_LIMIT_3GB,
PER_IRIX32 = 0x0009 | STICKY_TIMEOUTS,/* IRIX5 32-bit */
PER_IRIXN32 = 0x000a | STICKY_TIMEOUTS,/* IRIX6 new 32-bit */
PER_IRIX64 = 0x000b | STICKY_TIMEOUTS,/* IRIX6 64-bit */
PER_RISCOS = 0x000c,
PER_SOLARIS = 0x000d | STICKY_TIMEOUTS,
PER_UW7 = 0x000e | STICKY_TIMEOUTS | MMAP_PAGE_ZERO,
PER_OSF4 = 0x000f, /* OSF/1 v4 */
PER_HPUX = 0x0010,
PER_MASK = 0x00ff,
};
/*
* Return the base personality without flags.
*/
#define personality(pers) (pers & PER_MASK)
/* this flag is uneffective under linux too, should be deleted */
#ifndef MAP_DENYWRITE
#define MAP_DENYWRITE 0
#endif
/* should probably go in elf.h */
#ifndef ELIBBAD
#define ELIBBAD 80
#endif
#ifdef TARGET_WORDS_BIGENDIAN
#define ELF_DATA ELFDATA2MSB
#else
#define ELF_DATA ELFDATA2LSB
#endif
typedef target_ulong target_elf_greg_t;
#ifdef USE_UID16
typedef target_ushort target_uid_t;
typedef target_ushort target_gid_t;
#else
typedef target_uint target_uid_t;
typedef target_uint target_gid_t;
#endif
typedef target_int target_pid_t;
#ifdef TARGET_I386
#define ELF_PLATFORM get_elf_platform()
static const char *get_elf_platform(void)
{
static char elf_platform[] = "i386";
int family = (thread_env->cpuid_version >> 8) & 0xff;
if (family > 6)
family = 6;
if (family >= 3)
elf_platform[1] = '0' + family;
return elf_platform;
}
#define ELF_HWCAP get_elf_hwcap()
static uint32_t get_elf_hwcap(void)
{
return thread_env->cpuid_features;
}
#ifdef TARGET_X86_64
#define ELF_START_MMAP 0x2aaaaab000ULL
#define elf_check_arch(x) ( ((x) == ELF_ARCH) )
#define ELF_CLASS ELFCLASS64
#define ELF_ARCH EM_X86_64
static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
{
regs->rax = 0;
regs->rsp = infop->start_stack;
regs->rip = infop->entry;
}
#define ELF_NREG 27
typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
/*
* Note that ELF_NREG should be 29 as there should be place for
* TRAPNO and ERR "registers" as well but linux doesn't dump
* those.
*
* See linux kernel: arch/x86/include/asm/elf.h
*/
static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUState *env)
{
(*regs)[0] = env->regs[15];
(*regs)[1] = env->regs[14];
(*regs)[2] = env->regs[13];
(*regs)[3] = env->regs[12];
(*regs)[4] = env->regs[R_EBP];
(*regs)[5] = env->regs[R_EBX];
(*regs)[6] = env->regs[11];
(*regs)[7] = env->regs[10];
(*regs)[8] = env->regs[9];
(*regs)[9] = env->regs[8];
(*regs)[10] = env->regs[R_EAX];
(*regs)[11] = env->regs[R_ECX];
(*regs)[12] = env->regs[R_EDX];
(*regs)[13] = env->regs[R_ESI];
(*regs)[14] = env->regs[R_EDI];
(*regs)[15] = env->regs[R_EAX]; /* XXX */
(*regs)[16] = env->eip;
(*regs)[17] = env->segs[R_CS].selector & 0xffff;
(*regs)[18] = env->eflags;
(*regs)[19] = env->regs[R_ESP];
(*regs)[20] = env->segs[R_SS].selector & 0xffff;
(*regs)[21] = env->segs[R_FS].selector & 0xffff;
(*regs)[22] = env->segs[R_GS].selector & 0xffff;
(*regs)[23] = env->segs[R_DS].selector & 0xffff;
(*regs)[24] = env->segs[R_ES].selector & 0xffff;
(*regs)[25] = env->segs[R_FS].selector & 0xffff;
(*regs)[26] = env->segs[R_GS].selector & 0xffff;
}
#else
#define ELF_START_MMAP 0x80000000
/*
* This is used to ensure we don't load something for the wrong architecture.
*/
#define elf_check_arch(x) ( ((x) == EM_386) || ((x) == EM_486) )
/*
* These are used to set parameters in the core dumps.
*/
#define ELF_CLASS ELFCLASS32
#define ELF_ARCH EM_386
static inline void init_thread(struct target_pt_regs *regs,
struct image_info *infop)
{
regs->esp = infop->start_stack;
regs->eip = infop->entry;
/* SVR4/i386 ABI (pages 3-31, 3-32) says that when the program
starts %edx contains a pointer to a function which might be
registered using `atexit'. This provides a mean for the
dynamic linker to call DT_FINI functions for shared libraries
that have been loaded before the code runs.
A value of 0 tells we have no such handler. */
regs->edx = 0;
}
#define ELF_NREG 17
typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
/*
* Note that ELF_NREG should be 19 as there should be place for
* TRAPNO and ERR "registers" as well but linux doesn't dump
* those.
*
* See linux kernel: arch/x86/include/asm/elf.h
*/
static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUState *env)
{
(*regs)[0] = env->regs[R_EBX];
(*regs)[1] = env->regs[R_ECX];
(*regs)[2] = env->regs[R_EDX];
(*regs)[3] = env->regs[R_ESI];
(*regs)[4] = env->regs[R_EDI];
(*regs)[5] = env->regs[R_EBP];
(*regs)[6] = env->regs[R_EAX];
(*regs)[7] = env->segs[R_DS].selector & 0xffff;
(*regs)[8] = env->segs[R_ES].selector & 0xffff;
(*regs)[9] = env->segs[R_FS].selector & 0xffff;
(*regs)[10] = env->segs[R_GS].selector & 0xffff;
(*regs)[11] = env->regs[R_EAX]; /* XXX */
(*regs)[12] = env->eip;
(*regs)[13] = env->segs[R_CS].selector & 0xffff;
(*regs)[14] = env->eflags;
(*regs)[15] = env->regs[R_ESP];
(*regs)[16] = env->segs[R_SS].selector & 0xffff;
}
#endif
#define USE_ELF_CORE_DUMP
#define ELF_EXEC_PAGESIZE 4096
#endif
#ifdef TARGET_ARM
#define ELF_START_MMAP 0x80000000
#define elf_check_arch(x) ( (x) == EM_ARM )
#define ELF_CLASS ELFCLASS32
#define ELF_ARCH EM_ARM
static inline void init_thread(struct target_pt_regs *regs,
struct image_info *infop)
{
abi_long stack = infop->start_stack;
memset(regs, 0, sizeof(*regs));
regs->ARM_cpsr = 0x10;
if (infop->entry & 1)
regs->ARM_cpsr |= CPSR_T;
regs->ARM_pc = infop->entry & 0xfffffffe;
regs->ARM_sp = infop->start_stack;
/* FIXME - what to for failure of get_user()? */
get_user_ual(regs->ARM_r2, stack + 8); /* envp */
get_user_ual(regs->ARM_r1, stack + 4); /* envp */
/* XXX: it seems that r0 is zeroed after ! */
regs->ARM_r0 = 0;
/* For uClinux PIC binaries. */
/* XXX: Linux does this only on ARM with no MMU (do we care ?) */
regs->ARM_r10 = infop->start_data;
}
#define ELF_NREG 18
typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUState *env)
{
(*regs)[0] = tswapl(env->regs[0]);
(*regs)[1] = tswapl(env->regs[1]);
(*regs)[2] = tswapl(env->regs[2]);
(*regs)[3] = tswapl(env->regs[3]);
(*regs)[4] = tswapl(env->regs[4]);
(*regs)[5] = tswapl(env->regs[5]);
(*regs)[6] = tswapl(env->regs[6]);
(*regs)[7] = tswapl(env->regs[7]);
(*regs)[8] = tswapl(env->regs[8]);
(*regs)[9] = tswapl(env->regs[9]);
(*regs)[10] = tswapl(env->regs[10]);
(*regs)[11] = tswapl(env->regs[11]);
(*regs)[12] = tswapl(env->regs[12]);
(*regs)[13] = tswapl(env->regs[13]);
(*regs)[14] = tswapl(env->regs[14]);
(*regs)[15] = tswapl(env->regs[15]);
(*regs)[16] = tswapl(cpsr_read((CPUState *)env));
(*regs)[17] = tswapl(env->regs[0]); /* XXX */
}
#define USE_ELF_CORE_DUMP
#define ELF_EXEC_PAGESIZE 4096
enum
{
ARM_HWCAP_ARM_SWP = 1 << 0,
ARM_HWCAP_ARM_HALF = 1 << 1,
ARM_HWCAP_ARM_THUMB = 1 << 2,
ARM_HWCAP_ARM_26BIT = 1 << 3,
ARM_HWCAP_ARM_FAST_MULT = 1 << 4,
ARM_HWCAP_ARM_FPA = 1 << 5,
ARM_HWCAP_ARM_VFP = 1 << 6,
ARM_HWCAP_ARM_EDSP = 1 << 7,
ARM_HWCAP_ARM_JAVA = 1 << 8,
ARM_HWCAP_ARM_IWMMXT = 1 << 9,
ARM_HWCAP_ARM_THUMBEE = 1 << 10,
ARM_HWCAP_ARM_NEON = 1 << 11,
ARM_HWCAP_ARM_VFPv3 = 1 << 12,
ARM_HWCAP_ARM_VFPv3D16 = 1 << 13,
};
#define TARGET_HAS_GUEST_VALIDATE_BASE
/* We want the opportunity to check the suggested base */
bool guest_validate_base(unsigned long guest_base)
{
unsigned long real_start, test_page_addr;
/* We need to check that we can force a fault on access to the
* commpage at 0xffff0fxx
*/
test_page_addr = guest_base + (0xffff0f00 & qemu_host_page_mask);
/* Note it needs to be writeable to let us initialise it */
real_start = (unsigned long)
mmap((void *)test_page_addr, qemu_host_page_size,
PROT_READ | PROT_WRITE,
MAP_ANONYMOUS | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
/* If we can't map it then try another address */
if (real_start == -1ul) {
return 0;
}
if (real_start != test_page_addr) {
/* OS didn't put the page where we asked - unmap and reject */
munmap((void *)real_start, qemu_host_page_size);
return 0;
}
/* Leave the page mapped
* Populate it (mmap should have left it all 0'd)
*/
/* Kernel helper versions */
__put_user(5, (uint32_t *)g2h(0xffff0ffcul));
/* Now it's populated make it RO */
if (mprotect((void *)test_page_addr, qemu_host_page_size, PROT_READ)) {
perror("Protecting guest commpage");
exit(-1);
}
return 1; /* All good */
}
#define ELF_HWCAP (ARM_HWCAP_ARM_SWP | ARM_HWCAP_ARM_HALF \
| ARM_HWCAP_ARM_THUMB | ARM_HWCAP_ARM_FAST_MULT \
| ARM_HWCAP_ARM_FPA | ARM_HWCAP_ARM_VFP \
| ARM_HWCAP_ARM_NEON | ARM_HWCAP_ARM_VFPv3 )
#endif
#ifdef TARGET_UNICORE32
#define ELF_START_MMAP 0x80000000
#define elf_check_arch(x) ((x) == EM_UNICORE32)
#define ELF_CLASS ELFCLASS32
#define ELF_DATA ELFDATA2LSB
#define ELF_ARCH EM_UNICORE32
static inline void init_thread(struct target_pt_regs *regs,
struct image_info *infop)
{
abi_long stack = infop->start_stack;
memset(regs, 0, sizeof(*regs));
regs->UC32_REG_asr = 0x10;
regs->UC32_REG_pc = infop->entry & 0xfffffffe;
regs->UC32_REG_sp = infop->start_stack;
/* FIXME - what to for failure of get_user()? */
get_user_ual(regs->UC32_REG_02, stack + 8); /* envp */
get_user_ual(regs->UC32_REG_01, stack + 4); /* envp */
/* XXX: it seems that r0 is zeroed after ! */
regs->UC32_REG_00 = 0;
}
#define ELF_NREG 34
typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUState *env)
{
(*regs)[0] = env->regs[0];
(*regs)[1] = env->regs[1];
(*regs)[2] = env->regs[2];
(*regs)[3] = env->regs[3];
(*regs)[4] = env->regs[4];
(*regs)[5] = env->regs[5];
(*regs)[6] = env->regs[6];
(*regs)[7] = env->regs[7];
(*regs)[8] = env->regs[8];
(*regs)[9] = env->regs[9];
(*regs)[10] = env->regs[10];
(*regs)[11] = env->regs[11];
(*regs)[12] = env->regs[12];
(*regs)[13] = env->regs[13];
(*regs)[14] = env->regs[14];
(*regs)[15] = env->regs[15];
(*regs)[16] = env->regs[16];
(*regs)[17] = env->regs[17];
(*regs)[18] = env->regs[18];
(*regs)[19] = env->regs[19];
(*regs)[20] = env->regs[20];
(*regs)[21] = env->regs[21];
(*regs)[22] = env->regs[22];
(*regs)[23] = env->regs[23];
(*regs)[24] = env->regs[24];
(*regs)[25] = env->regs[25];
(*regs)[26] = env->regs[26];
(*regs)[27] = env->regs[27];
(*regs)[28] = env->regs[28];
(*regs)[29] = env->regs[29];
(*regs)[30] = env->regs[30];
(*regs)[31] = env->regs[31];
(*regs)[32] = cpu_asr_read((CPUState *)env);
(*regs)[33] = env->regs[0]; /* XXX */
}
#define USE_ELF_CORE_DUMP
#define ELF_EXEC_PAGESIZE 4096
#define ELF_HWCAP (UC32_HWCAP_CMOV | UC32_HWCAP_UCF64)
#endif
#ifdef TARGET_SPARC
#ifdef TARGET_SPARC64
#define ELF_START_MMAP 0x80000000
#define ELF_HWCAP (HWCAP_SPARC_FLUSH | HWCAP_SPARC_STBAR | HWCAP_SPARC_SWAP \
| HWCAP_SPARC_MULDIV | HWCAP_SPARC_V9)
#ifndef TARGET_ABI32
#define elf_check_arch(x) ( (x) == EM_SPARCV9 || (x) == EM_SPARC32PLUS )
#else
#define elf_check_arch(x) ( (x) == EM_SPARC32PLUS || (x) == EM_SPARC )
#endif
#define ELF_CLASS ELFCLASS64
#define ELF_ARCH EM_SPARCV9
#define STACK_BIAS 2047
static inline void init_thread(struct target_pt_regs *regs,
struct image_info *infop)
{
#ifndef TARGET_ABI32
regs->tstate = 0;
#endif
regs->pc = infop->entry;
regs->npc = regs->pc + 4;
regs->y = 0;
#ifdef TARGET_ABI32
regs->u_regs[14] = infop->start_stack - 16 * 4;
#else
if (personality(infop->personality) == PER_LINUX32)
regs->u_regs[14] = infop->start_stack - 16 * 4;
else
regs->u_regs[14] = infop->start_stack - 16 * 8 - STACK_BIAS;
#endif
}
#else
#define ELF_START_MMAP 0x80000000
#define ELF_HWCAP (HWCAP_SPARC_FLUSH | HWCAP_SPARC_STBAR | HWCAP_SPARC_SWAP \
| HWCAP_SPARC_MULDIV)
#define elf_check_arch(x) ( (x) == EM_SPARC )
#define ELF_CLASS ELFCLASS32
#define ELF_ARCH EM_SPARC
static inline void init_thread(struct target_pt_regs *regs,
struct image_info *infop)
{
regs->psr = 0;
regs->pc = infop->entry;
regs->npc = regs->pc + 4;
regs->y = 0;
regs->u_regs[14] = infop->start_stack - 16 * 4;
}
#endif
#endif
#ifdef TARGET_PPC
#define ELF_START_MMAP 0x80000000
#if defined(TARGET_PPC64) && !defined(TARGET_ABI32)
#define elf_check_arch(x) ( (x) == EM_PPC64 )
#define ELF_CLASS ELFCLASS64
#else
#define elf_check_arch(x) ( (x) == EM_PPC )
#define ELF_CLASS ELFCLASS32
#endif
#define ELF_ARCH EM_PPC
/* Feature masks for the Aux Vector Hardware Capabilities (AT_HWCAP).
See arch/powerpc/include/asm/cputable.h. */
enum {
QEMU_PPC_FEATURE_32 = 0x80000000,
QEMU_PPC_FEATURE_64 = 0x40000000,
QEMU_PPC_FEATURE_601_INSTR = 0x20000000,
QEMU_PPC_FEATURE_HAS_ALTIVEC = 0x10000000,
QEMU_PPC_FEATURE_HAS_FPU = 0x08000000,
QEMU_PPC_FEATURE_HAS_MMU = 0x04000000,
QEMU_PPC_FEATURE_HAS_4xxMAC = 0x02000000,
QEMU_PPC_FEATURE_UNIFIED_CACHE = 0x01000000,
QEMU_PPC_FEATURE_HAS_SPE = 0x00800000,
QEMU_PPC_FEATURE_HAS_EFP_SINGLE = 0x00400000,
QEMU_PPC_FEATURE_HAS_EFP_DOUBLE = 0x00200000,
QEMU_PPC_FEATURE_NO_TB = 0x00100000,
QEMU_PPC_FEATURE_POWER4 = 0x00080000,
QEMU_PPC_FEATURE_POWER5 = 0x00040000,
QEMU_PPC_FEATURE_POWER5_PLUS = 0x00020000,
QEMU_PPC_FEATURE_CELL = 0x00010000,
QEMU_PPC_FEATURE_BOOKE = 0x00008000,
QEMU_PPC_FEATURE_SMT = 0x00004000,
QEMU_PPC_FEATURE_ICACHE_SNOOP = 0x00002000,
QEMU_PPC_FEATURE_ARCH_2_05 = 0x00001000,
QEMU_PPC_FEATURE_PA6T = 0x00000800,
QEMU_PPC_FEATURE_HAS_DFP = 0x00000400,
QEMU_PPC_FEATURE_POWER6_EXT = 0x00000200,
QEMU_PPC_FEATURE_ARCH_2_06 = 0x00000100,
QEMU_PPC_FEATURE_HAS_VSX = 0x00000080,
QEMU_PPC_FEATURE_PSERIES_PERFMON_COMPAT = 0x00000040,
QEMU_PPC_FEATURE_TRUE_LE = 0x00000002,
QEMU_PPC_FEATURE_PPC_LE = 0x00000001,
};
#define ELF_HWCAP get_elf_hwcap()
static uint32_t get_elf_hwcap(void)
{
CPUState *e = thread_env;
uint32_t features = 0;
/* We don't have to be terribly complete here; the high points are
Altivec/FP/SPE support. Anything else is just a bonus. */
#define GET_FEATURE(flag, feature) \
do {if (e->insns_flags & flag) features |= feature; } while(0)
GET_FEATURE(PPC_64B, QEMU_PPC_FEATURE_64);
GET_FEATURE(PPC_FLOAT, QEMU_PPC_FEATURE_HAS_FPU);
GET_FEATURE(PPC_ALTIVEC, QEMU_PPC_FEATURE_HAS_ALTIVEC);
GET_FEATURE(PPC_SPE, QEMU_PPC_FEATURE_HAS_SPE);
GET_FEATURE(PPC_SPE_SINGLE, QEMU_PPC_FEATURE_HAS_EFP_SINGLE);
GET_FEATURE(PPC_SPE_DOUBLE, QEMU_PPC_FEATURE_HAS_EFP_DOUBLE);
GET_FEATURE(PPC_BOOKE, QEMU_PPC_FEATURE_BOOKE);
GET_FEATURE(PPC_405_MAC, QEMU_PPC_FEATURE_HAS_4xxMAC);
#undef GET_FEATURE
return features;
}
/*
* The requirements here are:
* - keep the final alignment of sp (sp & 0xf)
* - make sure the 32-bit value at the first 16 byte aligned position of
* AUXV is greater than 16 for glibc compatibility.
* AT_IGNOREPPC is used for that.
* - for compatibility with glibc ARCH_DLINFO must always be defined on PPC,
* even if DLINFO_ARCH_ITEMS goes to zero or is undefined.
*/
#define DLINFO_ARCH_ITEMS 5
#define ARCH_DLINFO \
do { \
NEW_AUX_ENT(AT_DCACHEBSIZE, 0x20); \
NEW_AUX_ENT(AT_ICACHEBSIZE, 0x20); \
NEW_AUX_ENT(AT_UCACHEBSIZE, 0); \
/* \
* Now handle glibc compatibility. \
*/ \
NEW_AUX_ENT(AT_IGNOREPPC, AT_IGNOREPPC); \
NEW_AUX_ENT(AT_IGNOREPPC, AT_IGNOREPPC); \
} while (0)
static inline void init_thread(struct target_pt_regs *_regs, struct image_info *infop)
{
_regs->gpr[1] = infop->start_stack;
#if defined(TARGET_PPC64) && !defined(TARGET_ABI32)
_regs->gpr[2] = ldq_raw(infop->entry + 8) + infop->load_bias;
infop->entry = ldq_raw(infop->entry) + infop->load_bias;
#endif
_regs->nip = infop->entry;
}
/* See linux kernel: arch/powerpc/include/asm/elf.h. */
#define ELF_NREG 48
typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUState *env)
{
int i;
target_ulong ccr = 0;
for (i = 0; i < ARRAY_SIZE(env->gpr); i++) {
(*regs)[i] = tswapl(env->gpr[i]);
}
(*regs)[32] = tswapl(env->nip);
(*regs)[33] = tswapl(env->msr);
(*regs)[35] = tswapl(env->ctr);
(*regs)[36] = tswapl(env->lr);
(*regs)[37] = tswapl(env->xer);
for (i = 0; i < ARRAY_SIZE(env->crf); i++) {
ccr |= env->crf[i] << (32 - ((i + 1) * 4));
}
(*regs)[38] = tswapl(ccr);
}
#define USE_ELF_CORE_DUMP
#define ELF_EXEC_PAGESIZE 4096
#endif
#ifdef TARGET_MIPS
#define ELF_START_MMAP 0x80000000
#define elf_check_arch(x) ( (x) == EM_MIPS )
#ifdef TARGET_MIPS64
#define ELF_CLASS ELFCLASS64
#else
#define ELF_CLASS ELFCLASS32
#endif
#define ELF_ARCH EM_MIPS
static inline void init_thread(struct target_pt_regs *regs,
struct image_info *infop)
{
regs->cp0_status = 2 << CP0St_KSU;
regs->cp0_epc = infop->entry;
regs->regs[29] = infop->start_stack;
}
/* See linux kernel: arch/mips/include/asm/elf.h. */
#define ELF_NREG 45
typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
/* See linux kernel: arch/mips/include/asm/reg.h. */
enum {
#ifdef TARGET_MIPS64
TARGET_EF_R0 = 0,
#else
TARGET_EF_R0 = 6,
#endif
TARGET_EF_R26 = TARGET_EF_R0 + 26,
TARGET_EF_R27 = TARGET_EF_R0 + 27,
TARGET_EF_LO = TARGET_EF_R0 + 32,
TARGET_EF_HI = TARGET_EF_R0 + 33,
TARGET_EF_CP0_EPC = TARGET_EF_R0 + 34,
TARGET_EF_CP0_BADVADDR = TARGET_EF_R0 + 35,
TARGET_EF_CP0_STATUS = TARGET_EF_R0 + 36,
TARGET_EF_CP0_CAUSE = TARGET_EF_R0 + 37
};
/* See linux kernel: arch/mips/kernel/process.c:elf_dump_regs. */
static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUState *env)
{
int i;
for (i = 0; i < TARGET_EF_R0; i++) {
(*regs)[i] = 0;
}
(*regs)[TARGET_EF_R0] = 0;
for (i = 1; i < ARRAY_SIZE(env->active_tc.gpr); i++) {
(*regs)[TARGET_EF_R0 + i] = tswapl(env->active_tc.gpr[i]);
}
(*regs)[TARGET_EF_R26] = 0;
(*regs)[TARGET_EF_R27] = 0;
(*regs)[TARGET_EF_LO] = tswapl(env->active_tc.LO[0]);
(*regs)[TARGET_EF_HI] = tswapl(env->active_tc.HI[0]);
(*regs)[TARGET_EF_CP0_EPC] = tswapl(env->active_tc.PC);
(*regs)[TARGET_EF_CP0_BADVADDR] = tswapl(env->CP0_BadVAddr);
(*regs)[TARGET_EF_CP0_STATUS] = tswapl(env->CP0_Status);
(*regs)[TARGET_EF_CP0_CAUSE] = tswapl(env->CP0_Cause);
}
#define USE_ELF_CORE_DUMP
#define ELF_EXEC_PAGESIZE 4096
#endif /* TARGET_MIPS */
#ifdef TARGET_MICROBLAZE
#define ELF_START_MMAP 0x80000000
#define elf_check_arch(x) ( (x) == EM_MICROBLAZE || (x) == EM_MICROBLAZE_OLD)
#define ELF_CLASS ELFCLASS32
#define ELF_ARCH EM_MICROBLAZE
static inline void init_thread(struct target_pt_regs *regs,
struct image_info *infop)
{
regs->pc = infop->entry;
regs->r1 = infop->start_stack;
}
#define ELF_EXEC_PAGESIZE 4096
#define USE_ELF_CORE_DUMP
#define ELF_NREG 38
typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
/* See linux kernel: arch/mips/kernel/process.c:elf_dump_regs. */
static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUState *env)
{
int i, pos = 0;
for (i = 0; i < 32; i++) {
(*regs)[pos++] = tswapl(env->regs[i]);
}
for (i = 0; i < 6; i++) {
(*regs)[pos++] = tswapl(env->sregs[i]);
}
}
#endif /* TARGET_MICROBLAZE */
#ifdef TARGET_SH4
#define ELF_START_MMAP 0x80000000
#define elf_check_arch(x) ( (x) == EM_SH )
#define ELF_CLASS ELFCLASS32
#define ELF_ARCH EM_SH
static inline void init_thread(struct target_pt_regs *regs,
struct image_info *infop)
{
/* Check other registers XXXXX */
regs->pc = infop->entry;
regs->regs[15] = infop->start_stack;
}
/* See linux kernel: arch/sh/include/asm/elf.h. */
#define ELF_NREG 23
typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
/* See linux kernel: arch/sh/include/asm/ptrace.h. */
enum {
TARGET_REG_PC = 16,
TARGET_REG_PR = 17,
TARGET_REG_SR = 18,
TARGET_REG_GBR = 19,
TARGET_REG_MACH = 20,
TARGET_REG_MACL = 21,
TARGET_REG_SYSCALL = 22
};
static inline void elf_core_copy_regs(target_elf_gregset_t *regs,
const CPUState *env)
{
int i;
for (i = 0; i < 16; i++) {
(*regs[i]) = tswapl(env->gregs[i]);
}
(*regs)[TARGET_REG_PC] = tswapl(env->pc);
(*regs)[TARGET_REG_PR] = tswapl(env->pr);
(*regs)[TARGET_REG_SR] = tswapl(env->sr);
(*regs)[TARGET_REG_GBR] = tswapl(env->gbr);
(*regs)[TARGET_REG_MACH] = tswapl(env->mach);
(*regs)[TARGET_REG_MACL] = tswapl(env->macl);
(*regs)[TARGET_REG_SYSCALL] = 0; /* FIXME */
}
#define USE_ELF_CORE_DUMP
#define ELF_EXEC_PAGESIZE 4096
#endif
#ifdef TARGET_CRIS
#define ELF_START_MMAP 0x80000000
#define elf_check_arch(x) ( (x) == EM_CRIS )
#define ELF_CLASS ELFCLASS32
#define ELF_ARCH EM_CRIS
static inline void init_thread(struct target_pt_regs *regs,
struct image_info *infop)
{
regs->erp = infop->entry;
}
#define ELF_EXEC_PAGESIZE 8192
#endif
#ifdef TARGET_M68K
#define ELF_START_MMAP 0x80000000
#define elf_check_arch(x) ( (x) == EM_68K )
#define ELF_CLASS ELFCLASS32
#define ELF_ARCH EM_68K
/* ??? Does this need to do anything?
#define ELF_PLAT_INIT(_r) */
static inline void init_thread(struct target_pt_regs *regs,
struct image_info *infop)
{
regs->usp = infop->start_stack;
regs->sr = 0;
regs->pc = infop->entry;
}
/* See linux kernel: arch/m68k/include/asm/elf.h. */
#define ELF_NREG 20
typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUState *env)
{
(*regs)[0] = tswapl(env->dregs[1]);
(*regs)[1] = tswapl(env->dregs[2]);
(*regs)[2] = tswapl(env->dregs[3]);
(*regs)[3] = tswapl(env->dregs[4]);
(*regs)[4] = tswapl(env->dregs[5]);
(*regs)[5] = tswapl(env->dregs[6]);
(*regs)[6] = tswapl(env->dregs[7]);
(*regs)[7] = tswapl(env->aregs[0]);
(*regs)[8] = tswapl(env->aregs[1]);
(*regs)[9] = tswapl(env->aregs[2]);
(*regs)[10] = tswapl(env->aregs[3]);
(*regs)[11] = tswapl(env->aregs[4]);
(*regs)[12] = tswapl(env->aregs[5]);
(*regs)[13] = tswapl(env->aregs[6]);
(*regs)[14] = tswapl(env->dregs[0]);
(*regs)[15] = tswapl(env->aregs[7]);
(*regs)[16] = tswapl(env->dregs[0]); /* FIXME: orig_d0 */
(*regs)[17] = tswapl(env->sr);
(*regs)[18] = tswapl(env->pc);
(*regs)[19] = 0; /* FIXME: regs->format | regs->vector */
}
#define USE_ELF_CORE_DUMP
#define ELF_EXEC_PAGESIZE 8192
#endif
#ifdef TARGET_ALPHA
#define ELF_START_MMAP (0x30000000000ULL)
#define elf_check_arch(x) ( (x) == ELF_ARCH )
#define ELF_CLASS ELFCLASS64
#define ELF_ARCH EM_ALPHA
static inline void init_thread(struct target_pt_regs *regs,
struct image_info *infop)
{
regs->pc = infop->entry;
regs->ps = 8;
regs->usp = infop->start_stack;
}
#define ELF_EXEC_PAGESIZE 8192
#endif /* TARGET_ALPHA */
#ifdef TARGET_S390X
#define ELF_START_MMAP (0x20000000000ULL)
#define elf_check_arch(x) ( (x) == ELF_ARCH )
#define ELF_CLASS ELFCLASS64
#define ELF_DATA ELFDATA2MSB
#define ELF_ARCH EM_S390
static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
{
regs->psw.addr = infop->entry;
regs->psw.mask = PSW_MASK_64 | PSW_MASK_32;
regs->gprs[15] = infop->start_stack;
}
#endif /* TARGET_S390X */
#ifndef ELF_PLATFORM
#define ELF_PLATFORM (NULL)
#endif
#ifndef ELF_HWCAP
#define ELF_HWCAP 0
#endif
#ifdef TARGET_ABI32
#undef ELF_CLASS
#define ELF_CLASS ELFCLASS32
#undef bswaptls
#define bswaptls(ptr) bswap32s(ptr)
#endif
#include "elf.h"
struct exec
{
unsigned int a_info; /* Use macros N_MAGIC, etc for access */
unsigned int a_text; /* length of text, in bytes */
unsigned int a_data; /* length of data, in bytes */
unsigned int a_bss; /* length of uninitialized data area, in bytes */
unsigned int a_syms; /* length of symbol table data in file, in bytes */
unsigned int a_entry; /* start address */
unsigned int a_trsize; /* length of relocation info for text, in bytes */
unsigned int a_drsize; /* length of relocation info for data, in bytes */
};
#define N_MAGIC(exec) ((exec).a_info & 0xffff)
#define OMAGIC 0407
#define NMAGIC 0410
#define ZMAGIC 0413
#define QMAGIC 0314
/* Necessary parameters */
#define TARGET_ELF_EXEC_PAGESIZE TARGET_PAGE_SIZE
#define TARGET_ELF_PAGESTART(_v) ((_v) & ~(unsigned long)(TARGET_ELF_EXEC_PAGESIZE-1))
#define TARGET_ELF_PAGEOFFSET(_v) ((_v) & (TARGET_ELF_EXEC_PAGESIZE-1))
#define DLINFO_ITEMS 13
static inline void memcpy_fromfs(void * to, const void * from, unsigned long n)
{
memcpy(to, from, n);
}
#ifdef BSWAP_NEEDED
static void bswap_ehdr(struct elfhdr *ehdr)
{
bswap16s(&ehdr->e_type); /* Object file type */
bswap16s(&ehdr->e_machine); /* Architecture */
bswap32s(&ehdr->e_version); /* Object file version */
bswaptls(&ehdr->e_entry); /* Entry point virtual address */
bswaptls(&ehdr->e_phoff); /* Program header table file offset */
bswaptls(&ehdr->e_shoff); /* Section header table file offset */
bswap32s(&ehdr->e_flags); /* Processor-specific flags */
bswap16s(&ehdr->e_ehsize); /* ELF header size in bytes */
bswap16s(&ehdr->e_phentsize); /* Program header table entry size */
bswap16s(&ehdr->e_phnum); /* Program header table entry count */
bswap16s(&ehdr->e_shentsize); /* Section header table entry size */
bswap16s(&ehdr->e_shnum); /* Section header table entry count */
bswap16s(&ehdr->e_shstrndx); /* Section header string table index */
}
static void bswap_phdr(struct elf_phdr *phdr, int phnum)