1
2#include "qemu/osdep.h"
3#include <sys/param.h>
4
5#include <sys/resource.h>
6
7#include "qemu.h"
8#include "disas/disas.h"
9#include "qemu/path.h"
10
11#ifdef _ARCH_PPC64
12#undef ARCH_DLINFO
13#undef ELF_PLATFORM
14#undef ELF_HWCAP
15#undef ELF_HWCAP2
16#undef ELF_CLASS
17#undef ELF_DATA
18#undef ELF_ARCH
19#endif
20
21#define ELF_OSABI ELFOSABI_SYSV
22
23
24
25
26
27
28
29
30enum {
31 ADDR_NO_RANDOMIZE = 0x0040000,
32 FDPIC_FUNCPTRS = 0x0080000,
33
34 MMAP_PAGE_ZERO = 0x0100000,
35 ADDR_COMPAT_LAYOUT = 0x0200000,
36 READ_IMPLIES_EXEC = 0x0400000,
37 ADDR_LIMIT_32BIT = 0x0800000,
38 SHORT_INODE = 0x1000000,
39 WHOLE_SECONDS = 0x2000000,
40 STICKY_TIMEOUTS = 0x4000000,
41 ADDR_LIMIT_3GB = 0x8000000,
42};
43
44
45
46
47
48
49
50enum {
51 PER_LINUX = 0x0000,
52 PER_LINUX_32BIT = 0x0000 | ADDR_LIMIT_32BIT,
53 PER_LINUX_FDPIC = 0x0000 | FDPIC_FUNCPTRS,
54 PER_SVR4 = 0x0001 | STICKY_TIMEOUTS | MMAP_PAGE_ZERO,
55 PER_SVR3 = 0x0002 | STICKY_TIMEOUTS | SHORT_INODE,
56 PER_SCOSVR3 = 0x0003 | STICKY_TIMEOUTS | WHOLE_SECONDS | SHORT_INODE,
57 PER_OSR5 = 0x0003 | STICKY_TIMEOUTS | WHOLE_SECONDS,
58 PER_WYSEV386 = 0x0004 | STICKY_TIMEOUTS | SHORT_INODE,
59 PER_ISCR4 = 0x0005 | STICKY_TIMEOUTS,
60 PER_BSD = 0x0006,
61 PER_SUNOS = 0x0006 | STICKY_TIMEOUTS,
62 PER_XENIX = 0x0007 | STICKY_TIMEOUTS | SHORT_INODE,
63 PER_LINUX32 = 0x0008,
64 PER_LINUX32_3GB = 0x0008 | ADDR_LIMIT_3GB,
65 PER_IRIX32 = 0x0009 | STICKY_TIMEOUTS,
66 PER_IRIXN32 = 0x000a | STICKY_TIMEOUTS,
67 PER_IRIX64 = 0x000b | STICKY_TIMEOUTS,
68 PER_RISCOS = 0x000c,
69 PER_SOLARIS = 0x000d | STICKY_TIMEOUTS,
70 PER_UW7 = 0x000e | STICKY_TIMEOUTS | MMAP_PAGE_ZERO,
71 PER_OSF4 = 0x000f,
72 PER_HPUX = 0x0010,
73 PER_MASK = 0x00ff,
74};
75
76
77
78
79#define personality(pers) (pers & PER_MASK)
80
81
82#ifndef MAP_DENYWRITE
83#define MAP_DENYWRITE 0
84#endif
85
86
87#ifndef ELIBBAD
88#define ELIBBAD 80
89#endif
90
91#ifdef TARGET_WORDS_BIGENDIAN
92#define ELF_DATA ELFDATA2MSB
93#else
94#define ELF_DATA ELFDATA2LSB
95#endif
96
97#ifdef TARGET_ABI_MIPSN32
98typedef abi_ullong target_elf_greg_t;
99#define tswapreg(ptr) tswap64(ptr)
100#else
101typedef abi_ulong target_elf_greg_t;
102#define tswapreg(ptr) tswapal(ptr)
103#endif
104
105#ifdef USE_UID16
106typedef abi_ushort target_uid_t;
107typedef abi_ushort target_gid_t;
108#else
109typedef abi_uint target_uid_t;
110typedef abi_uint target_gid_t;
111#endif
112typedef abi_int target_pid_t;
113
114#ifdef TARGET_I386
115
116#define ELF_PLATFORM get_elf_platform()
117
118static const char *get_elf_platform(void)
119{
120 static char elf_platform[] = "i386";
121 int family = object_property_get_int(OBJECT(thread_cpu), "family", NULL);
122 if (family > 6)
123 family = 6;
124 if (family >= 3)
125 elf_platform[1] = '0' + family;
126 return elf_platform;
127}
128
129#define ELF_HWCAP get_elf_hwcap()
130
131static uint32_t get_elf_hwcap(void)
132{
133 X86CPU *cpu = X86_CPU(thread_cpu);
134
135 return cpu->env.features[FEAT_1_EDX];
136}
137
138#ifdef TARGET_X86_64
139#define ELF_START_MMAP 0x2aaaaab000ULL
140
141#define ELF_CLASS ELFCLASS64
142#define ELF_ARCH EM_X86_64
143
144static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
145{
146 regs->rax = 0;
147 regs->rsp = infop->start_stack;
148 regs->rip = infop->entry;
149}
150
151#define ELF_NREG 27
152typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
153
154
155
156
157
158
159
160
161static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUX86State *env)
162{
163 (*regs)[0] = env->regs[15];
164 (*regs)[1] = env->regs[14];
165 (*regs)[2] = env->regs[13];
166 (*regs)[3] = env->regs[12];
167 (*regs)[4] = env->regs[R_EBP];
168 (*regs)[5] = env->regs[R_EBX];
169 (*regs)[6] = env->regs[11];
170 (*regs)[7] = env->regs[10];
171 (*regs)[8] = env->regs[9];
172 (*regs)[9] = env->regs[8];
173 (*regs)[10] = env->regs[R_EAX];
174 (*regs)[11] = env->regs[R_ECX];
175 (*regs)[12] = env->regs[R_EDX];
176 (*regs)[13] = env->regs[R_ESI];
177 (*regs)[14] = env->regs[R_EDI];
178 (*regs)[15] = env->regs[R_EAX];
179 (*regs)[16] = env->eip;
180 (*regs)[17] = env->segs[R_CS].selector & 0xffff;
181 (*regs)[18] = env->eflags;
182 (*regs)[19] = env->regs[R_ESP];
183 (*regs)[20] = env->segs[R_SS].selector & 0xffff;
184 (*regs)[21] = env->segs[R_FS].selector & 0xffff;
185 (*regs)[22] = env->segs[R_GS].selector & 0xffff;
186 (*regs)[23] = env->segs[R_DS].selector & 0xffff;
187 (*regs)[24] = env->segs[R_ES].selector & 0xffff;
188 (*regs)[25] = env->segs[R_FS].selector & 0xffff;
189 (*regs)[26] = env->segs[R_GS].selector & 0xffff;
190}
191
192#else
193
194#define ELF_START_MMAP 0x80000000
195
196
197
198
199#define elf_check_arch(x) ( ((x) == EM_386) || ((x) == EM_486) )
200
201
202
203
204#define ELF_CLASS ELFCLASS32
205#define ELF_ARCH EM_386
206
207static inline void init_thread(struct target_pt_regs *regs,
208 struct image_info *infop)
209{
210 regs->esp = infop->start_stack;
211 regs->eip = infop->entry;
212
213
214
215
216
217
218
219
220 regs->edx = 0;
221}
222
223#define ELF_NREG 17
224typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
225
226
227
228
229
230
231
232
233static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUX86State *env)
234{
235 (*regs)[0] = env->regs[R_EBX];
236 (*regs)[1] = env->regs[R_ECX];
237 (*regs)[2] = env->regs[R_EDX];
238 (*regs)[3] = env->regs[R_ESI];
239 (*regs)[4] = env->regs[R_EDI];
240 (*regs)[5] = env->regs[R_EBP];
241 (*regs)[6] = env->regs[R_EAX];
242 (*regs)[7] = env->segs[R_DS].selector & 0xffff;
243 (*regs)[8] = env->segs[R_ES].selector & 0xffff;
244 (*regs)[9] = env->segs[R_FS].selector & 0xffff;
245 (*regs)[10] = env->segs[R_GS].selector & 0xffff;
246 (*regs)[11] = env->regs[R_EAX];
247 (*regs)[12] = env->eip;
248 (*regs)[13] = env->segs[R_CS].selector & 0xffff;
249 (*regs)[14] = env->eflags;
250 (*regs)[15] = env->regs[R_ESP];
251 (*regs)[16] = env->segs[R_SS].selector & 0xffff;
252}
253#endif
254
255#define USE_ELF_CORE_DUMP
256#define ELF_EXEC_PAGESIZE 4096
257
258#endif
259
260#ifdef TARGET_ARM
261
262#ifndef TARGET_AARCH64
263
264
265#define ELF_START_MMAP 0x80000000
266
267#define ELF_ARCH EM_ARM
268#define ELF_CLASS ELFCLASS32
269
270static inline void init_thread(struct target_pt_regs *regs,
271 struct image_info *infop)
272{
273 abi_long stack = infop->start_stack;
274 memset(regs, 0, sizeof(*regs));
275
276 regs->uregs[16] = ARM_CPU_MODE_USR;
277 if (infop->entry & 1) {
278 regs->uregs[16] |= CPSR_T;
279 }
280 regs->uregs[15] = infop->entry & 0xfffffffe;
281 regs->uregs[13] = infop->start_stack;
282
283 get_user_ual(regs->uregs[2], stack + 8);
284 get_user_ual(regs->uregs[1], stack + 4);
285
286 regs->uregs[0] = 0;
287
288
289 regs->uregs[10] = infop->start_data;
290}
291
292#define ELF_NREG 18
293typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
294
295static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUARMState *env)
296{
297 (*regs)[0] = tswapreg(env->regs[0]);
298 (*regs)[1] = tswapreg(env->regs[1]);
299 (*regs)[2] = tswapreg(env->regs[2]);
300 (*regs)[3] = tswapreg(env->regs[3]);
301 (*regs)[4] = tswapreg(env->regs[4]);
302 (*regs)[5] = tswapreg(env->regs[5]);
303 (*regs)[6] = tswapreg(env->regs[6]);
304 (*regs)[7] = tswapreg(env->regs[7]);
305 (*regs)[8] = tswapreg(env->regs[8]);
306 (*regs)[9] = tswapreg(env->regs[9]);
307 (*regs)[10] = tswapreg(env->regs[10]);
308 (*regs)[11] = tswapreg(env->regs[11]);
309 (*regs)[12] = tswapreg(env->regs[12]);
310 (*regs)[13] = tswapreg(env->regs[13]);
311 (*regs)[14] = tswapreg(env->regs[14]);
312 (*regs)[15] = tswapreg(env->regs[15]);
313
314 (*regs)[16] = tswapreg(cpsr_read((CPUARMState *)env));
315 (*regs)[17] = tswapreg(env->regs[0]);
316}
317
318#define USE_ELF_CORE_DUMP
319#define ELF_EXEC_PAGESIZE 4096
320
321enum
322{
323 ARM_HWCAP_ARM_SWP = 1 << 0,
324 ARM_HWCAP_ARM_HALF = 1 << 1,
325 ARM_HWCAP_ARM_THUMB = 1 << 2,
326 ARM_HWCAP_ARM_26BIT = 1 << 3,
327 ARM_HWCAP_ARM_FAST_MULT = 1 << 4,
328 ARM_HWCAP_ARM_FPA = 1 << 5,
329 ARM_HWCAP_ARM_VFP = 1 << 6,
330 ARM_HWCAP_ARM_EDSP = 1 << 7,
331 ARM_HWCAP_ARM_JAVA = 1 << 8,
332 ARM_HWCAP_ARM_IWMMXT = 1 << 9,
333 ARM_HWCAP_ARM_CRUNCH = 1 << 10,
334 ARM_HWCAP_ARM_THUMBEE = 1 << 11,
335 ARM_HWCAP_ARM_NEON = 1 << 12,
336 ARM_HWCAP_ARM_VFPv3 = 1 << 13,
337 ARM_HWCAP_ARM_VFPv3D16 = 1 << 14,
338 ARM_HWCAP_ARM_TLS = 1 << 15,
339 ARM_HWCAP_ARM_VFPv4 = 1 << 16,
340 ARM_HWCAP_ARM_IDIVA = 1 << 17,
341 ARM_HWCAP_ARM_IDIVT = 1 << 18,
342 ARM_HWCAP_ARM_VFPD32 = 1 << 19,
343 ARM_HWCAP_ARM_LPAE = 1 << 20,
344 ARM_HWCAP_ARM_EVTSTRM = 1 << 21,
345};
346
347enum {
348 ARM_HWCAP2_ARM_AES = 1 << 0,
349 ARM_HWCAP2_ARM_PMULL = 1 << 1,
350 ARM_HWCAP2_ARM_SHA1 = 1 << 2,
351 ARM_HWCAP2_ARM_SHA2 = 1 << 3,
352 ARM_HWCAP2_ARM_CRC32 = 1 << 4,
353};
354
355
356
357
358
359
360
361
362
363
364
365static int init_guest_commpage(unsigned long guest_base,
366 unsigned long guest_size)
367{
368 unsigned long real_start, test_page_addr;
369
370
371
372
373 test_page_addr = guest_base + (0xffff0f00 & qemu_host_page_mask);
374
375
376
377
378
379
380
381
382
383 if (test_page_addr >= guest_base
384 && test_page_addr < (guest_base + guest_size)) {
385 return -1;
386 }
387
388
389 real_start = (unsigned long)
390 mmap((void *)test_page_addr, qemu_host_page_size,
391 PROT_READ | PROT_WRITE,
392 MAP_ANONYMOUS | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
393
394
395 if (real_start == -1ul) {
396 return 0;
397 }
398
399 if (real_start != test_page_addr) {
400
401 munmap((void *)real_start, qemu_host_page_size);
402 return 0;
403 }
404
405
406
407
408
409
410 __put_user(5, (uint32_t *)g2h(0xffff0ffcul));
411
412
413 if (mprotect((void *)test_page_addr, qemu_host_page_size, PROT_READ)) {
414 perror("Protecting guest commpage");
415 exit(-1);
416 }
417
418 return 1;
419}
420
421#define ELF_HWCAP get_elf_hwcap()
422#define ELF_HWCAP2 get_elf_hwcap2()
423
424static uint32_t get_elf_hwcap(void)
425{
426 ARMCPU *cpu = ARM_CPU(thread_cpu);
427 uint32_t hwcaps = 0;
428
429 hwcaps |= ARM_HWCAP_ARM_SWP;
430 hwcaps |= ARM_HWCAP_ARM_HALF;
431 hwcaps |= ARM_HWCAP_ARM_THUMB;
432 hwcaps |= ARM_HWCAP_ARM_FAST_MULT;
433
434
435#define GET_FEATURE(feat, hwcap) \
436 do { if (arm_feature(&cpu->env, feat)) { hwcaps |= hwcap; } } while (0)
437
438 GET_FEATURE(ARM_FEATURE_V5, ARM_HWCAP_ARM_EDSP);
439 GET_FEATURE(ARM_FEATURE_VFP, ARM_HWCAP_ARM_VFP);
440 GET_FEATURE(ARM_FEATURE_IWMMXT, ARM_HWCAP_ARM_IWMMXT);
441 GET_FEATURE(ARM_FEATURE_THUMB2EE, ARM_HWCAP_ARM_THUMBEE);
442 GET_FEATURE(ARM_FEATURE_NEON, ARM_HWCAP_ARM_NEON);
443 GET_FEATURE(ARM_FEATURE_VFP3, ARM_HWCAP_ARM_VFPv3);
444 GET_FEATURE(ARM_FEATURE_V6K, ARM_HWCAP_ARM_TLS);
445 GET_FEATURE(ARM_FEATURE_VFP4, ARM_HWCAP_ARM_VFPv4);
446 GET_FEATURE(ARM_FEATURE_ARM_DIV, ARM_HWCAP_ARM_IDIVA);
447 GET_FEATURE(ARM_FEATURE_THUMB_DIV, ARM_HWCAP_ARM_IDIVT);
448
449
450
451
452
453 GET_FEATURE(ARM_FEATURE_VFP3, ARM_HWCAP_ARM_VFPD32);
454 GET_FEATURE(ARM_FEATURE_LPAE, ARM_HWCAP_ARM_LPAE);
455
456 return hwcaps;
457}
458
459static uint32_t get_elf_hwcap2(void)
460{
461 ARMCPU *cpu = ARM_CPU(thread_cpu);
462 uint32_t hwcaps = 0;
463
464 GET_FEATURE(ARM_FEATURE_V8_AES, ARM_HWCAP2_ARM_AES);
465 GET_FEATURE(ARM_FEATURE_V8_PMULL, ARM_HWCAP2_ARM_PMULL);
466 GET_FEATURE(ARM_FEATURE_V8_SHA1, ARM_HWCAP2_ARM_SHA1);
467 GET_FEATURE(ARM_FEATURE_V8_SHA256, ARM_HWCAP2_ARM_SHA2);
468 GET_FEATURE(ARM_FEATURE_CRC, ARM_HWCAP2_ARM_CRC32);
469 return hwcaps;
470}
471
472#undef GET_FEATURE
473
474#else
475
476#define ELF_START_MMAP 0x80000000
477
478#define ELF_ARCH EM_AARCH64
479#define ELF_CLASS ELFCLASS64
480#define ELF_PLATFORM "aarch64"
481
482static inline void init_thread(struct target_pt_regs *regs,
483 struct image_info *infop)
484{
485 abi_long stack = infop->start_stack;
486 memset(regs, 0, sizeof(*regs));
487
488 regs->pc = infop->entry & ~0x3ULL;
489 regs->sp = stack;
490}
491
492#define ELF_NREG 34
493typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
494
495static void elf_core_copy_regs(target_elf_gregset_t *regs,
496 const CPUARMState *env)
497{
498 int i;
499
500 for (i = 0; i < 32; i++) {
501 (*regs)[i] = tswapreg(env->xregs[i]);
502 }
503 (*regs)[32] = tswapreg(env->pc);
504 (*regs)[33] = tswapreg(pstate_read((CPUARMState *)env));
505}
506
507#define USE_ELF_CORE_DUMP
508#define ELF_EXEC_PAGESIZE 4096
509
510enum {
511 ARM_HWCAP_A64_FP = 1 << 0,
512 ARM_HWCAP_A64_ASIMD = 1 << 1,
513 ARM_HWCAP_A64_EVTSTRM = 1 << 2,
514 ARM_HWCAP_A64_AES = 1 << 3,
515 ARM_HWCAP_A64_PMULL = 1 << 4,
516 ARM_HWCAP_A64_SHA1 = 1 << 5,
517 ARM_HWCAP_A64_SHA2 = 1 << 6,
518 ARM_HWCAP_A64_CRC32 = 1 << 7,
519 ARM_HWCAP_A64_ATOMICS = 1 << 8,
520 ARM_HWCAP_A64_FPHP = 1 << 9,
521 ARM_HWCAP_A64_ASIMDHP = 1 << 10,
522 ARM_HWCAP_A64_CPUID = 1 << 11,
523 ARM_HWCAP_A64_ASIMDRDM = 1 << 12,
524 ARM_HWCAP_A64_JSCVT = 1 << 13,
525 ARM_HWCAP_A64_FCMA = 1 << 14,
526 ARM_HWCAP_A64_LRCPC = 1 << 15,
527 ARM_HWCAP_A64_DCPOP = 1 << 16,
528 ARM_HWCAP_A64_SHA3 = 1 << 17,
529 ARM_HWCAP_A64_SM3 = 1 << 18,
530 ARM_HWCAP_A64_SM4 = 1 << 19,
531 ARM_HWCAP_A64_ASIMDDP = 1 << 20,
532 ARM_HWCAP_A64_SHA512 = 1 << 21,
533 ARM_HWCAP_A64_SVE = 1 << 22,
534};
535
536#define ELF_HWCAP get_elf_hwcap()
537
538static uint32_t get_elf_hwcap(void)
539{
540 ARMCPU *cpu = ARM_CPU(thread_cpu);
541 uint32_t hwcaps = 0;
542
543 hwcaps |= ARM_HWCAP_A64_FP;
544 hwcaps |= ARM_HWCAP_A64_ASIMD;
545
546
547#define GET_FEATURE(feat, hwcap) \
548 do { if (arm_feature(&cpu->env, feat)) { hwcaps |= hwcap; } } while (0)
549 GET_FEATURE(ARM_FEATURE_V8_AES, ARM_HWCAP_A64_AES);
550 GET_FEATURE(ARM_FEATURE_V8_PMULL, ARM_HWCAP_A64_PMULL);
551 GET_FEATURE(ARM_FEATURE_V8_SHA1, ARM_HWCAP_A64_SHA1);
552 GET_FEATURE(ARM_FEATURE_V8_SHA256, ARM_HWCAP_A64_SHA2);
553 GET_FEATURE(ARM_FEATURE_CRC, ARM_HWCAP_A64_CRC32);
554 GET_FEATURE(ARM_FEATURE_V8_SHA3, ARM_HWCAP_A64_SHA3);
555 GET_FEATURE(ARM_FEATURE_V8_SM3, ARM_HWCAP_A64_SM3);
556 GET_FEATURE(ARM_FEATURE_V8_SM4, ARM_HWCAP_A64_SM4);
557 GET_FEATURE(ARM_FEATURE_V8_SHA512, ARM_HWCAP_A64_SHA512);
558 GET_FEATURE(ARM_FEATURE_V8_FP16,
559 ARM_HWCAP_A64_FPHP | ARM_HWCAP_A64_ASIMDHP);
560 GET_FEATURE(ARM_FEATURE_V8_RDM, ARM_HWCAP_A64_ASIMDRDM);
561 GET_FEATURE(ARM_FEATURE_V8_FCMA, ARM_HWCAP_A64_FCMA);
562#undef GET_FEATURE
563
564 return hwcaps;
565}
566
567#endif
568#endif
569
570#ifdef TARGET_SPARC
571#ifdef TARGET_SPARC64
572
573#define ELF_START_MMAP 0x80000000
574#define ELF_HWCAP (HWCAP_SPARC_FLUSH | HWCAP_SPARC_STBAR | HWCAP_SPARC_SWAP \
575 | HWCAP_SPARC_MULDIV | HWCAP_SPARC_V9)
576#ifndef TARGET_ABI32
577#define elf_check_arch(x) ( (x) == EM_SPARCV9 || (x) == EM_SPARC32PLUS )
578#else
579#define elf_check_arch(x) ( (x) == EM_SPARC32PLUS || (x) == EM_SPARC )
580#endif
581
582#define ELF_CLASS ELFCLASS64
583#define ELF_ARCH EM_SPARCV9
584
585#define STACK_BIAS 2047
586
587static inline void init_thread(struct target_pt_regs *regs,
588 struct image_info *infop)
589{
590#ifndef TARGET_ABI32
591 regs->tstate = 0;
592#endif
593 regs->pc = infop->entry;
594 regs->npc = regs->pc + 4;
595 regs->y = 0;
596#ifdef TARGET_ABI32
597 regs->u_regs[14] = infop->start_stack - 16 * 4;
598#else
599 if (personality(infop->personality) == PER_LINUX32)
600 regs->u_regs[14] = infop->start_stack - 16 * 4;
601 else
602 regs->u_regs[14] = infop->start_stack - 16 * 8 - STACK_BIAS;
603#endif
604}
605
606#else
607#define ELF_START_MMAP 0x80000000
608#define ELF_HWCAP (HWCAP_SPARC_FLUSH | HWCAP_SPARC_STBAR | HWCAP_SPARC_SWAP \
609 | HWCAP_SPARC_MULDIV)
610
611#define ELF_CLASS ELFCLASS32
612#define ELF_ARCH EM_SPARC
613
614static inline void init_thread(struct target_pt_regs *regs,
615 struct image_info *infop)
616{
617 regs->psr = 0;
618 regs->pc = infop->entry;
619 regs->npc = regs->pc + 4;
620 regs->y = 0;
621 regs->u_regs[14] = infop->start_stack - 16 * 4;
622}
623
624#endif
625#endif
626
627#ifdef TARGET_PPC
628
629#define ELF_MACHINE PPC_ELF_MACHINE
630#define ELF_START_MMAP 0x80000000
631
632#if defined(TARGET_PPC64) && !defined(TARGET_ABI32)
633
634#define elf_check_arch(x) ( (x) == EM_PPC64 )
635
636#define ELF_CLASS ELFCLASS64
637
638#else
639
640#define ELF_CLASS ELFCLASS32
641
642#endif
643
644#define ELF_ARCH EM_PPC
645
646
647
648enum {
649 QEMU_PPC_FEATURE_32 = 0x80000000,
650 QEMU_PPC_FEATURE_64 = 0x40000000,
651 QEMU_PPC_FEATURE_601_INSTR = 0x20000000,
652 QEMU_PPC_FEATURE_HAS_ALTIVEC = 0x10000000,
653 QEMU_PPC_FEATURE_HAS_FPU = 0x08000000,
654 QEMU_PPC_FEATURE_HAS_MMU = 0x04000000,
655 QEMU_PPC_FEATURE_HAS_4xxMAC = 0x02000000,
656 QEMU_PPC_FEATURE_UNIFIED_CACHE = 0x01000000,
657 QEMU_PPC_FEATURE_HAS_SPE = 0x00800000,
658 QEMU_PPC_FEATURE_HAS_EFP_SINGLE = 0x00400000,
659 QEMU_PPC_FEATURE_HAS_EFP_DOUBLE = 0x00200000,
660 QEMU_PPC_FEATURE_NO_TB = 0x00100000,
661 QEMU_PPC_FEATURE_POWER4 = 0x00080000,
662 QEMU_PPC_FEATURE_POWER5 = 0x00040000,
663 QEMU_PPC_FEATURE_POWER5_PLUS = 0x00020000,
664 QEMU_PPC_FEATURE_CELL = 0x00010000,
665 QEMU_PPC_FEATURE_BOOKE = 0x00008000,
666 QEMU_PPC_FEATURE_SMT = 0x00004000,
667 QEMU_PPC_FEATURE_ICACHE_SNOOP = 0x00002000,
668 QEMU_PPC_FEATURE_ARCH_2_05 = 0x00001000,
669 QEMU_PPC_FEATURE_PA6T = 0x00000800,
670 QEMU_PPC_FEATURE_HAS_DFP = 0x00000400,
671 QEMU_PPC_FEATURE_POWER6_EXT = 0x00000200,
672 QEMU_PPC_FEATURE_ARCH_2_06 = 0x00000100,
673 QEMU_PPC_FEATURE_HAS_VSX = 0x00000080,
674 QEMU_PPC_FEATURE_PSERIES_PERFMON_COMPAT = 0x00000040,
675
676 QEMU_PPC_FEATURE_TRUE_LE = 0x00000002,
677 QEMU_PPC_FEATURE_PPC_LE = 0x00000001,
678
679
680 QEMU_PPC_FEATURE2_ARCH_2_07 = 0x80000000,
681 QEMU_PPC_FEATURE2_HAS_HTM = 0x40000000,
682 QEMU_PPC_FEATURE2_HAS_DSCR = 0x20000000,
683 QEMU_PPC_FEATURE2_HAS_EBB = 0x10000000,
684 QEMU_PPC_FEATURE2_HAS_ISEL = 0x08000000,
685 QEMU_PPC_FEATURE2_HAS_TAR = 0x04000000,
686};
687
688#define ELF_HWCAP get_elf_hwcap()
689
690static uint32_t get_elf_hwcap(void)
691{
692 PowerPCCPU *cpu = POWERPC_CPU(thread_cpu);
693 uint32_t features = 0;
694
695
696
697#define GET_FEATURE(flag, feature) \
698 do { if (cpu->env.insns_flags & flag) { features |= feature; } } while (0)
699#define GET_FEATURE2(flags, feature) \
700 do { \
701 if ((cpu->env.insns_flags2 & flags) == flags) { \
702 features |= feature; \
703 } \
704 } while (0)
705 GET_FEATURE(PPC_64B, QEMU_PPC_FEATURE_64);
706 GET_FEATURE(PPC_FLOAT, QEMU_PPC_FEATURE_HAS_FPU);
707 GET_FEATURE(PPC_ALTIVEC, QEMU_PPC_FEATURE_HAS_ALTIVEC);
708 GET_FEATURE(PPC_SPE, QEMU_PPC_FEATURE_HAS_SPE);
709 GET_FEATURE(PPC_SPE_SINGLE, QEMU_PPC_FEATURE_HAS_EFP_SINGLE);
710 GET_FEATURE(PPC_SPE_DOUBLE, QEMU_PPC_FEATURE_HAS_EFP_DOUBLE);
711 GET_FEATURE(PPC_BOOKE, QEMU_PPC_FEATURE_BOOKE);
712 GET_FEATURE(PPC_405_MAC, QEMU_PPC_FEATURE_HAS_4xxMAC);
713 GET_FEATURE2(PPC2_DFP, QEMU_PPC_FEATURE_HAS_DFP);
714 GET_FEATURE2(PPC2_VSX, QEMU_PPC_FEATURE_HAS_VSX);
715 GET_FEATURE2((PPC2_PERM_ISA206 | PPC2_DIVE_ISA206 | PPC2_ATOMIC_ISA206 |
716 PPC2_FP_CVT_ISA206 | PPC2_FP_TST_ISA206),
717 QEMU_PPC_FEATURE_ARCH_2_06);
718#undef GET_FEATURE
719#undef GET_FEATURE2
720
721 return features;
722}
723
724#define ELF_HWCAP2 get_elf_hwcap2()
725
726static uint32_t get_elf_hwcap2(void)
727{
728 PowerPCCPU *cpu = POWERPC_CPU(thread_cpu);
729 uint32_t features = 0;
730
731#define GET_FEATURE(flag, feature) \
732 do { if (cpu->env.insns_flags & flag) { features |= feature; } } while (0)
733#define GET_FEATURE2(flag, feature) \
734 do { if (cpu->env.insns_flags2 & flag) { features |= feature; } } while (0)
735
736 GET_FEATURE(PPC_ISEL, QEMU_PPC_FEATURE2_HAS_ISEL);
737 GET_FEATURE2(PPC2_BCTAR_ISA207, QEMU_PPC_FEATURE2_HAS_TAR);
738 GET_FEATURE2((PPC2_BCTAR_ISA207 | PPC2_LSQ_ISA207 | PPC2_ALTIVEC_207 |
739 PPC2_ISA207S), QEMU_PPC_FEATURE2_ARCH_2_07);
740
741#undef GET_FEATURE
742#undef GET_FEATURE2
743
744 return features;
745}
746
747
748
749
750
751
752
753
754
755
756#define DLINFO_ARCH_ITEMS 5
757#define ARCH_DLINFO \
758 do { \
759 PowerPCCPU *cpu = POWERPC_CPU(thread_cpu); \
760
761
762
763 \
764 NEW_AUX_ENT(AT_IGNOREPPC, AT_IGNOREPPC); \
765 NEW_AUX_ENT(AT_IGNOREPPC, AT_IGNOREPPC); \
766 NEW_AUX_ENT(AT_DCACHEBSIZE, cpu->env.dcache_line_size); \
767 NEW_AUX_ENT(AT_ICACHEBSIZE, cpu->env.icache_line_size); \
768 NEW_AUX_ENT(AT_UCACHEBSIZE, 0); \
769 } while (0)
770
771static inline void init_thread(struct target_pt_regs *_regs, struct image_info *infop)
772{
773 _regs->gpr[1] = infop->start_stack;
774#if defined(TARGET_PPC64) && !defined(TARGET_ABI32)
775 if (get_ppc64_abi(infop) < 2) {
776 uint64_t val;
777 get_user_u64(val, infop->entry + 8);
778 _regs->gpr[2] = val + infop->load_bias;
779 get_user_u64(val, infop->entry);
780 infop->entry = val + infop->load_bias;
781 } else {
782 _regs->gpr[12] = infop->entry;
783 }
784#endif
785 _regs->nip = infop->entry;
786}
787
788
789#define ELF_NREG 48
790typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
791
792static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUPPCState *env)
793{
794 int i;
795 target_ulong ccr = 0;
796
797 for (i = 0; i < ARRAY_SIZE(env->gpr); i++) {
798 (*regs)[i] = tswapreg(env->gpr[i]);
799 }
800
801 (*regs)[32] = tswapreg(env->nip);
802 (*regs)[33] = tswapreg(env->msr);
803 (*regs)[35] = tswapreg(env->ctr);
804 (*regs)[36] = tswapreg(env->lr);
805 (*regs)[37] = tswapreg(env->xer);
806
807 for (i = 0; i < ARRAY_SIZE(env->crf); i++) {
808 ccr |= env->crf[i] << (32 - ((i + 1) * 4));
809 }
810 (*regs)[38] = tswapreg(ccr);
811}
812
813#define USE_ELF_CORE_DUMP
814#define ELF_EXEC_PAGESIZE 4096
815
816#endif
817
818#ifdef TARGET_MIPS
819
820#define ELF_START_MMAP 0x80000000
821
822#ifdef TARGET_MIPS64
823#define ELF_CLASS ELFCLASS64
824#else
825#define ELF_CLASS ELFCLASS32
826#endif
827#define ELF_ARCH EM_MIPS
828
829static inline void init_thread(struct target_pt_regs *regs,
830 struct image_info *infop)
831{
832 regs->cp0_status = 2 << CP0St_KSU;
833 regs->cp0_epc = infop->entry;
834 regs->regs[29] = infop->start_stack;
835}
836
837
838#define ELF_NREG 45
839typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
840
841
842enum {
843#ifdef TARGET_MIPS64
844 TARGET_EF_R0 = 0,
845#else
846 TARGET_EF_R0 = 6,
847#endif
848 TARGET_EF_R26 = TARGET_EF_R0 + 26,
849 TARGET_EF_R27 = TARGET_EF_R0 + 27,
850 TARGET_EF_LO = TARGET_EF_R0 + 32,
851 TARGET_EF_HI = TARGET_EF_R0 + 33,
852 TARGET_EF_CP0_EPC = TARGET_EF_R0 + 34,
853 TARGET_EF_CP0_BADVADDR = TARGET_EF_R0 + 35,
854 TARGET_EF_CP0_STATUS = TARGET_EF_R0 + 36,
855 TARGET_EF_CP0_CAUSE = TARGET_EF_R0 + 37
856};
857
858
859static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUMIPSState *env)
860{
861 int i;
862
863 for (i = 0; i < TARGET_EF_R0; i++) {
864 (*regs)[i] = 0;
865 }
866 (*regs)[TARGET_EF_R0] = 0;
867
868 for (i = 1; i < ARRAY_SIZE(env->active_tc.gpr); i++) {
869 (*regs)[TARGET_EF_R0 + i] = tswapreg(env->active_tc.gpr[i]);
870 }
871
872 (*regs)[TARGET_EF_R26] = 0;
873 (*regs)[TARGET_EF_R27] = 0;
874 (*regs)[TARGET_EF_LO] = tswapreg(env->active_tc.LO[0]);
875 (*regs)[TARGET_EF_HI] = tswapreg(env->active_tc.HI[0]);
876 (*regs)[TARGET_EF_CP0_EPC] = tswapreg(env->active_tc.PC);
877 (*regs)[TARGET_EF_CP0_BADVADDR] = tswapreg(env->CP0_BadVAddr);
878 (*regs)[TARGET_EF_CP0_STATUS] = tswapreg(env->CP0_Status);
879 (*regs)[TARGET_EF_CP0_CAUSE] = tswapreg(env->CP0_Cause);
880}
881
882#define USE_ELF_CORE_DUMP
883#define ELF_EXEC_PAGESIZE 4096
884
885
886enum {
887 HWCAP_MIPS_R6 = (1 << 0),
888 HWCAP_MIPS_MSA = (1 << 1),
889};
890
891#define ELF_HWCAP get_elf_hwcap()
892
893static uint32_t get_elf_hwcap(void)
894{
895 MIPSCPU *cpu = MIPS_CPU(thread_cpu);
896 uint32_t hwcaps = 0;
897
898#define GET_FEATURE(flag, hwcap) \
899 do { if (cpu->env.insn_flags & (flag)) { hwcaps |= hwcap; } } while (0)
900
901 GET_FEATURE(ISA_MIPS32R6 | ISA_MIPS64R6, HWCAP_MIPS_R6);
902 GET_FEATURE(ASE_MSA, HWCAP_MIPS_MSA);
903
904#undef GET_FEATURE
905
906 return hwcaps;
907}
908
909#endif
910
911#ifdef TARGET_MICROBLAZE
912
913#define ELF_START_MMAP 0x80000000
914
915#define elf_check_arch(x) ( (x) == EM_MICROBLAZE || (x) == EM_MICROBLAZE_OLD)
916
917#define ELF_CLASS ELFCLASS32
918#define ELF_ARCH EM_MICROBLAZE
919
920static inline void init_thread(struct target_pt_regs *regs,
921 struct image_info *infop)
922{
923 regs->pc = infop->entry;
924 regs->r1 = infop->start_stack;
925
926}
927
928#define ELF_EXEC_PAGESIZE 4096
929
930#define USE_ELF_CORE_DUMP
931#define ELF_NREG 38
932typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
933
934
935static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUMBState *env)
936{
937 int i, pos = 0;
938
939 for (i = 0; i < 32; i++) {
940 (*regs)[pos++] = tswapreg(env->regs[i]);
941 }
942
943 for (i = 0; i < 6; i++) {
944 (*regs)[pos++] = tswapreg(env->sregs[i]);
945 }
946}
947
948#endif
949
950#ifdef TARGET_NIOS2
951
952#define ELF_START_MMAP 0x80000000
953
954#define elf_check_arch(x) ((x) == EM_ALTERA_NIOS2)
955
956#define ELF_CLASS ELFCLASS32
957#define ELF_ARCH EM_ALTERA_NIOS2
958
959static void init_thread(struct target_pt_regs *regs, struct image_info *infop)
960{
961 regs->ea = infop->entry;
962 regs->sp = infop->start_stack;
963 regs->estatus = 0x3;
964}
965
966#define ELF_EXEC_PAGESIZE 4096
967
968#define USE_ELF_CORE_DUMP
969#define ELF_NREG 49
970typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
971
972
973static void elf_core_copy_regs(target_elf_gregset_t *regs,
974 const CPUNios2State *env)
975{
976 int i;
977
978 (*regs)[0] = -1;
979 for (i = 1; i < 8; i++)
980 (*regs)[i] = tswapreg(env->regs[i + 7]);
981
982 for (i = 8; i < 16; i++)
983 (*regs)[i] = tswapreg(env->regs[i - 8]);
984
985 for (i = 16; i < 24; i++)
986 (*regs)[i] = tswapreg(env->regs[i + 7]);
987 (*regs)[24] = -1;
988 (*regs)[25] = -1;
989 (*regs)[26] = tswapreg(env->regs[R_GP]);
990 (*regs)[27] = tswapreg(env->regs[R_SP]);
991 (*regs)[28] = tswapreg(env->regs[R_FP]);
992 (*regs)[29] = tswapreg(env->regs[R_EA]);
993 (*regs)[30] = -1;
994 (*regs)[31] = tswapreg(env->regs[R_RA]);
995
996 (*regs)[32] = tswapreg(env->regs[R_PC]);
997
998 (*regs)[33] = -1;
999 (*regs)[34] = tswapreg(env->regs[CR_ESTATUS]);
1000
1001 for (i = 35; i < 49; i++)
1002 (*regs)[i] = -1;
1003}
1004
1005#endif
1006
1007#ifdef TARGET_OPENRISC
1008
1009#define ELF_START_MMAP 0x08000000
1010
1011#define ELF_ARCH EM_OPENRISC
1012#define ELF_CLASS ELFCLASS32
1013#define ELF_DATA ELFDATA2MSB
1014
1015static inline void init_thread(struct target_pt_regs *regs,
1016 struct image_info *infop)
1017{
1018 regs->pc = infop->entry;
1019 regs->gpr[1] = infop->start_stack;
1020}
1021
1022#define USE_ELF_CORE_DUMP
1023#define ELF_EXEC_PAGESIZE 8192
1024
1025
1026#define ELF_NREG 34
1027typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
1028
1029static void elf_core_copy_regs(target_elf_gregset_t *regs,
1030 const CPUOpenRISCState *env)
1031{
1032 int i;
1033
1034 for (i = 0; i < 32; i++) {
1035 (*regs)[i] = tswapreg(cpu_get_gpr(env, i));
1036 }
1037 (*regs)[32] = tswapreg(env->pc);
1038 (*regs)[33] = tswapreg(cpu_get_sr(env));
1039}
1040#define ELF_HWCAP 0
1041#define ELF_PLATFORM NULL
1042
1043#endif
1044
1045#ifdef TARGET_SH4
1046
1047#define ELF_START_MMAP 0x80000000
1048
1049#define ELF_CLASS ELFCLASS32
1050#define ELF_ARCH EM_SH
1051
1052static inline void init_thread(struct target_pt_regs *regs,
1053 struct image_info *infop)
1054{
1055
1056 regs->pc = infop->entry;
1057 regs->regs[15] = infop->start_stack;
1058}
1059
1060
1061#define ELF_NREG 23
1062typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
1063
1064
1065enum {
1066 TARGET_REG_PC = 16,
1067 TARGET_REG_PR = 17,
1068 TARGET_REG_SR = 18,
1069 TARGET_REG_GBR = 19,
1070 TARGET_REG_MACH = 20,
1071 TARGET_REG_MACL = 21,
1072 TARGET_REG_SYSCALL = 22
1073};
1074
1075static inline void elf_core_copy_regs(target_elf_gregset_t *regs,
1076 const CPUSH4State *env)
1077{
1078 int i;
1079
1080 for (i = 0; i < 16; i++) {
1081 (*regs)[i] = tswapreg(env->gregs[i]);
1082 }
1083
1084 (*regs)[TARGET_REG_PC] = tswapreg(env->pc);
1085 (*regs)[TARGET_REG_PR] = tswapreg(env->pr);
1086 (*regs)[TARGET_REG_SR] = tswapreg(env->sr);
1087 (*regs)[TARGET_REG_GBR] = tswapreg(env->gbr);
1088 (*regs)[TARGET_REG_MACH] = tswapreg(env->mach);
1089 (*regs)[TARGET_REG_MACL] = tswapreg(env->macl);
1090 (*regs)[TARGET_REG_SYSCALL] = 0;
1091}
1092
1093#define USE_ELF_CORE_DUMP
1094#define ELF_EXEC_PAGESIZE 4096
1095
1096enum {
1097 SH_CPU_HAS_FPU = 0x0001,
1098 SH_CPU_HAS_P2_FLUSH_BUG = 0x0002,
1099 SH_CPU_HAS_MMU_PAGE_ASSOC = 0x0004,
1100 SH_CPU_HAS_DSP = 0x0008,
1101 SH_CPU_HAS_PERF_COUNTER = 0x0010,
1102 SH_CPU_HAS_PTEA = 0x0020,
1103 SH_CPU_HAS_LLSC = 0x0040,
1104 SH_CPU_HAS_L2_CACHE = 0x0080,
1105 SH_CPU_HAS_OP32 = 0x0100,
1106 SH_CPU_HAS_PTEAEX = 0x0200,
1107};
1108
1109#define ELF_HWCAP get_elf_hwcap()
1110
1111static uint32_t get_elf_hwcap(void)
1112{
1113 SuperHCPU *cpu = SUPERH_CPU(thread_cpu);
1114 uint32_t hwcap = 0;
1115
1116 hwcap |= SH_CPU_HAS_FPU;
1117
1118 if (cpu->env.features & SH_FEATURE_SH4A) {
1119 hwcap |= SH_CPU_HAS_LLSC;
1120 }
1121
1122 return hwcap;
1123}
1124
1125#endif
1126
1127#ifdef TARGET_CRIS
1128
1129#define ELF_START_MMAP 0x80000000
1130
1131#define ELF_CLASS ELFCLASS32
1132#define ELF_ARCH EM_CRIS
1133
1134static inline void init_thread(struct target_pt_regs *regs,
1135 struct image_info *infop)
1136{
1137 regs->erp = infop->entry;
1138}
1139
1140#define ELF_EXEC_PAGESIZE 8192
1141
1142#endif
1143
1144#ifdef TARGET_M68K
1145
1146#define ELF_START_MMAP 0x80000000
1147
1148#define ELF_CLASS ELFCLASS32
1149#define ELF_ARCH EM_68K
1150
1151
1152
1153
1154static inline void init_thread(struct target_pt_regs *regs,
1155 struct image_info *infop)
1156{
1157 regs->usp = infop->start_stack;
1158 regs->sr = 0;
1159 regs->pc = infop->entry;
1160}
1161
1162
1163#define ELF_NREG 20
1164typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
1165
1166static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUM68KState *env)
1167{
1168 (*regs)[0] = tswapreg(env->dregs[1]);
1169 (*regs)[1] = tswapreg(env->dregs[2]);
1170 (*regs)[2] = tswapreg(env->dregs[3]);
1171 (*regs)[3] = tswapreg(env->dregs[4]);
1172 (*regs)[4] = tswapreg(env->dregs[5]);
1173 (*regs)[5] = tswapreg(env->dregs[6]);
1174 (*regs)[6] = tswapreg(env->dregs[7]);
1175 (*regs)[7] = tswapreg(env->aregs[0]);
1176 (*regs)[8] = tswapreg(env->aregs[1]);
1177 (*regs)[9] = tswapreg(env->aregs[2]);
1178 (*regs)[10] = tswapreg(env->aregs[3]);
1179 (*regs)[11] = tswapreg(env->aregs[4]);
1180 (*regs)[12] = tswapreg(env->aregs[5]);
1181 (*regs)[13] = tswapreg(env->aregs[6]);
1182 (*regs)[14] = tswapreg(env->dregs[0]);
1183 (*regs)[15] = tswapreg(env->aregs[7]);
1184 (*regs)[16] = tswapreg(env->dregs[0]);
1185 (*regs)[17] = tswapreg(env->sr);
1186 (*regs)[18] = tswapreg(env->pc);
1187 (*regs)[19] = 0;
1188}
1189
1190#define USE_ELF_CORE_DUMP
1191#define ELF_EXEC_PAGESIZE 8192
1192
1193#endif
1194
1195#ifdef TARGET_ALPHA
1196
1197#define ELF_START_MMAP (0x30000000000ULL)
1198
1199#define ELF_CLASS ELFCLASS64
1200#define ELF_ARCH EM_ALPHA
1201
1202static inline void init_thread(struct target_pt_regs *regs,
1203 struct image_info *infop)
1204{
1205 regs->pc = infop->entry;
1206 regs->ps = 8;
1207 regs->usp = infop->start_stack;
1208}
1209
1210#define ELF_EXEC_PAGESIZE 8192
1211
1212#endif
1213
1214#ifdef TARGET_S390X
1215
1216#define ELF_START_MMAP (0x20000000000ULL)
1217
1218#define ELF_CLASS ELFCLASS64
1219#define ELF_DATA ELFDATA2MSB
1220#define ELF_ARCH EM_S390
1221
1222static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
1223{
1224 regs->psw.addr = infop->entry;
1225 regs->psw.mask = PSW_MASK_64 | PSW_MASK_32;
1226 regs->gprs[15] = infop->start_stack;
1227}
1228
1229#endif
1230
1231#ifdef TARGET_TILEGX
1232
1233
1234#define ELF_START_MMAP (0x00000020000000000ULL)
1235
1236#define elf_check_arch(x) ((x) == EM_TILEGX)
1237
1238#define ELF_CLASS ELFCLASS64
1239#define ELF_DATA ELFDATA2LSB
1240#define ELF_ARCH EM_TILEGX
1241
1242static inline void init_thread(struct target_pt_regs *regs,
1243 struct image_info *infop)
1244{
1245 regs->pc = infop->entry;
1246 regs->sp = infop->start_stack;
1247
1248}
1249
1250#define ELF_EXEC_PAGESIZE 65536
1251
1252#endif
1253
1254#ifdef TARGET_RISCV
1255
1256#define ELF_START_MMAP 0x80000000
1257#define ELF_ARCH EM_RISCV
1258
1259#ifdef TARGET_RISCV32
1260#define ELF_CLASS ELFCLASS32
1261#else
1262#define ELF_CLASS ELFCLASS64
1263#endif
1264
1265static inline void init_thread(struct target_pt_regs *regs,
1266 struct image_info *infop)
1267{
1268 regs->sepc = infop->entry;
1269 regs->sp = infop->start_stack;
1270}
1271
1272#define ELF_EXEC_PAGESIZE 4096
1273
1274#endif
1275
1276#ifdef TARGET_HPPA
1277
1278#define ELF_START_MMAP 0x80000000
1279#define ELF_CLASS ELFCLASS32
1280#define ELF_ARCH EM_PARISC
1281#define ELF_PLATFORM "PARISC"
1282#define STACK_GROWS_DOWN 0
1283#define STACK_ALIGNMENT 64
1284
1285static inline void init_thread(struct target_pt_regs *regs,
1286 struct image_info *infop)
1287{
1288 regs->iaoq[0] = infop->entry;
1289 regs->iaoq[1] = infop->entry + 4;
1290 regs->gr[23] = 0;
1291 regs->gr[24] = infop->arg_start;
1292 regs->gr[25] = (infop->arg_end - infop->arg_start) / sizeof(abi_ulong);
1293
1294 regs->gr[30] = infop->start_stack + 64;
1295 regs->gr[31] = infop->entry;
1296}
1297
1298#endif
1299
1300#ifdef TARGET_XTENSA
1301
1302#define ELF_START_MMAP 0x20000000
1303
1304#define ELF_CLASS ELFCLASS32
1305#define ELF_ARCH EM_XTENSA
1306
1307static inline void init_thread(struct target_pt_regs *regs,
1308 struct image_info *infop)
1309{
1310 regs->windowbase = 0;
1311 regs->windowstart = 1;
1312 regs->areg[1] = infop->start_stack;
1313 regs->pc = infop->entry;
1314}
1315
1316
1317#define ELF_NREG 128
1318typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
1319
1320enum {
1321 TARGET_REG_PC,
1322 TARGET_REG_PS,
1323 TARGET_REG_LBEG,
1324 TARGET_REG_LEND,
1325 TARGET_REG_LCOUNT,
1326 TARGET_REG_SAR,
1327 TARGET_REG_WINDOWSTART,
1328 TARGET_REG_WINDOWBASE,
1329 TARGET_REG_THREADPTR,
1330 TARGET_REG_AR0 = 64,
1331};
1332
1333static void elf_core_copy_regs(target_elf_gregset_t *regs,
1334 const CPUXtensaState *env)
1335{
1336 unsigned i;
1337
1338 (*regs)[TARGET_REG_PC] = tswapreg(env->pc);
1339 (*regs)[TARGET_REG_PS] = tswapreg(env->sregs[PS] & ~PS_EXCM);
1340 (*regs)[TARGET_REG_LBEG] = tswapreg(env->sregs[LBEG]);
1341 (*regs)[TARGET_REG_LEND] = tswapreg(env->sregs[LEND]);
1342 (*regs)[TARGET_REG_LCOUNT] = tswapreg(env->sregs[LCOUNT]);
1343 (*regs)[TARGET_REG_SAR] = tswapreg(env->sregs[SAR]);
1344 (*regs)[TARGET_REG_WINDOWSTART] = tswapreg(env->sregs[WINDOW_START]);
1345 (*regs)[TARGET_REG_WINDOWBASE] = tswapreg(env->sregs[WINDOW_BASE]);
1346 (*regs)[TARGET_REG_THREADPTR] = tswapreg(env->uregs[THREADPTR]);
1347 xtensa_sync_phys_from_window((CPUXtensaState *)env);
1348 for (i = 0; i < env->config->nareg; ++i) {
1349 (*regs)[TARGET_REG_AR0 + i] = tswapreg(env->phys_regs[i]);
1350 }
1351}
1352
1353#define USE_ELF_CORE_DUMP
1354#define ELF_EXEC_PAGESIZE 4096
1355
1356#endif
1357
1358#ifndef ELF_PLATFORM
1359#define ELF_PLATFORM (NULL)
1360#endif
1361
1362#ifndef ELF_MACHINE
1363#define ELF_MACHINE ELF_ARCH
1364#endif
1365
1366#ifndef elf_check_arch
1367#define elf_check_arch(x) ((x) == ELF_ARCH)
1368#endif
1369
1370#ifndef ELF_HWCAP
1371#define ELF_HWCAP 0
1372#endif
1373
1374#ifndef STACK_GROWS_DOWN
1375#define STACK_GROWS_DOWN 1
1376#endif
1377
1378#ifndef STACK_ALIGNMENT
1379#define STACK_ALIGNMENT 16
1380#endif
1381
1382#ifdef TARGET_ABI32
1383#undef ELF_CLASS
1384#define ELF_CLASS ELFCLASS32
1385#undef bswaptls
1386#define bswaptls(ptr) bswap32s(ptr)
1387#endif
1388
1389#include "elf.h"
1390
1391struct exec
1392{
1393 unsigned int a_info;
1394 unsigned int a_text;
1395 unsigned int a_data;
1396 unsigned int a_bss;
1397 unsigned int a_syms;
1398 unsigned int a_entry;
1399 unsigned int a_trsize;
1400 unsigned int a_drsize;
1401};
1402
1403
1404#define N_MAGIC(exec) ((exec).a_info & 0xffff)
1405#define OMAGIC 0407
1406#define NMAGIC 0410
1407#define ZMAGIC 0413
1408#define QMAGIC 0314
1409
1410
1411#define TARGET_ELF_EXEC_PAGESIZE TARGET_PAGE_SIZE
1412#define TARGET_ELF_PAGESTART(_v) ((_v) & \
1413 ~(abi_ulong)(TARGET_ELF_EXEC_PAGESIZE-1))
1414#define TARGET_ELF_PAGEOFFSET(_v) ((_v) & (TARGET_ELF_EXEC_PAGESIZE-1))
1415
1416#define DLINFO_ITEMS 15
1417
1418static inline void memcpy_fromfs(void * to, const void * from, unsigned long n)
1419{
1420 memcpy(to, from, n);
1421}
1422
1423#ifdef BSWAP_NEEDED
1424static void bswap_ehdr(struct elfhdr *ehdr)
1425{
1426 bswap16s(&ehdr->e_type);
1427 bswap16s(&ehdr->e_machine);
1428 bswap32s(&ehdr->e_version);
1429 bswaptls(&ehdr->e_entry);
1430 bswaptls(&ehdr->e_phoff);
1431 bswaptls(&ehdr->e_shoff);
1432 bswap32s(&ehdr->e_flags);
1433 bswap16s(&ehdr->e_ehsize);
1434 bswap16s(&ehdr->e_phentsize);
1435 bswap16s(&ehdr->e_phnum);
1436 bswap16s(&ehdr->e_shentsize);
1437 bswap16s(&ehdr->e_shnum);
1438 bswap16s(&ehdr->e_shstrndx);
1439}
1440
1441static void bswap_phdr(struct elf_phdr *phdr, int phnum)
1442{
1443 int i;
1444 for (i = 0; i < phnum; ++i, ++phdr) {
1445 bswap32s(&phdr->p_type);
1446 bswap32s(&phdr->p_flags);
1447 bswaptls(&phdr->p_offset);
1448 bswaptls(&phdr->p_vaddr);
1449 bswaptls(&phdr->p_paddr);
1450 bswaptls(&phdr->p_filesz);
1451 bswaptls(&phdr->p_memsz);
1452 bswaptls(&phdr->p_align);
1453 }
1454}
1455
1456static void bswap_shdr(struct elf_shdr *shdr, int shnum)
1457{
1458 int i;
1459 for (i = 0; i < shnum; ++i, ++shdr) {
1460 bswap32s(&shdr->sh_name);
1461 bswap32s(&shdr->sh_type);
1462 bswaptls(&shdr->sh_flags);
1463 bswaptls(&shdr->sh_addr);
1464 bswaptls(&shdr->sh_offset);
1465 bswaptls(&shdr->sh_size);
1466 bswap32s(&shdr->sh_link);
1467 bswap32s(&shdr->sh_info);
1468 bswaptls(&shdr->sh_addralign);
1469 bswaptls(&shdr->sh_entsize);
1470 }
1471}
1472
1473static void bswap_sym(struct elf_sym *sym)
1474{
1475 bswap32s(&sym->st_name);
1476 bswaptls(&sym->st_value);
1477 bswaptls(&sym->st_size);
1478 bswap16s(&sym->st_shndx);
1479}
1480#else
1481static inline void bswap_ehdr(struct elfhdr *ehdr) { }
1482static inline void bswap_phdr(struct elf_phdr *phdr, int phnum) { }
1483static inline void bswap_shdr(struct elf_shdr *shdr, int shnum) { }
1484static inline void bswap_sym(struct elf_sym *sym) { }
1485#endif
1486
1487#ifdef USE_ELF_CORE_DUMP
1488static int elf_core_dump(int, const CPUArchState *);
1489#endif
1490static void load_symbols(struct elfhdr *hdr, int fd, abi_ulong load_bias);
1491
1492
1493
1494static bool elf_check_ident(struct elfhdr *ehdr)
1495{
1496 return (ehdr->e_ident[EI_MAG0] == ELFMAG0
1497 && ehdr->e_ident[EI_MAG1] == ELFMAG1
1498 && ehdr->e_ident[EI_MAG2] == ELFMAG2
1499 && ehdr->e_ident[EI_MAG3] == ELFMAG3
1500 && ehdr->e_ident[EI_CLASS] == ELF_CLASS
1501 && ehdr->e_ident[EI_DATA] == ELF_DATA
1502 && ehdr->e_ident[EI_VERSION] == EV_CURRENT);
1503}
1504
1505
1506
1507static bool elf_check_ehdr(struct elfhdr *ehdr)
1508{
1509 return (elf_check_arch(ehdr->e_machine)
1510 && ehdr->e_ehsize == sizeof(struct elfhdr)
1511 && ehdr->e_phentsize == sizeof(struct elf_phdr)
1512 && (ehdr->e_type == ET_EXEC || ehdr->e_type == ET_DYN));
1513}
1514
1515
1516
1517
1518
1519
1520
1521static abi_ulong copy_elf_strings(int argc, char **argv, char *scratch,
1522 abi_ulong p, abi_ulong stack_limit)
1523{
1524 char *tmp;
1525 int len, i;
1526 abi_ulong top = p;
1527
1528 if (!p) {
1529 return 0;
1530 }
1531
1532 if (STACK_GROWS_DOWN) {
1533 int offset = ((p - 1) % TARGET_PAGE_SIZE) + 1;
1534 for (i = argc - 1; i >= 0; --i) {
1535 tmp = argv[i];
1536 if (!tmp) {
1537 fprintf(stderr, "VFS: argc is wrong");
1538 exit(-1);
1539 }
1540 len = strlen(tmp) + 1;
1541 tmp += len;
1542
1543 if (len > (p - stack_limit)) {
1544 return 0;
1545 }
1546 while (len) {
1547 int bytes_to_copy = (len > offset) ? offset : len;
1548 tmp -= bytes_to_copy;
1549 p -= bytes_to_copy;
1550 offset -= bytes_to_copy;
1551 len -= bytes_to_copy;
1552
1553 memcpy_fromfs(scratch + offset, tmp, bytes_to_copy);
1554
1555 if (offset == 0) {
1556 memcpy_to_target(p, scratch, top - p);
1557 top = p;
1558 offset = TARGET_PAGE_SIZE;
1559 }
1560 }
1561 }
1562 if (p != top) {
1563 memcpy_to_target(p, scratch + offset, top - p);
1564 }
1565 } else {
1566 int remaining = TARGET_PAGE_SIZE - (p % TARGET_PAGE_SIZE);
1567 for (i = 0; i < argc; ++i) {
1568 tmp = argv[i];
1569 if (!tmp) {
1570 fprintf(stderr, "VFS: argc is wrong");
1571 exit(-1);
1572 }
1573 len = strlen(tmp) + 1;
1574 if (len > (stack_limit - p)) {
1575 return 0;
1576 }
1577 while (len) {
1578 int bytes_to_copy = (len > remaining) ? remaining : len;
1579
1580 memcpy_fromfs(scratch + (p - top), tmp, bytes_to_copy);
1581
1582 tmp += bytes_to_copy;
1583 remaining -= bytes_to_copy;
1584 p += bytes_to_copy;
1585 len -= bytes_to_copy;
1586
1587 if (remaining == 0) {
1588 memcpy_to_target(top, scratch, p - top);
1589 top = p;
1590 remaining = TARGET_PAGE_SIZE;
1591 }
1592 }
1593 }
1594 if (p != top) {
1595 memcpy_to_target(top, scratch, p - top);
1596 }
1597 }
1598
1599 return p;
1600}
1601
1602
1603
1604
1605
1606
1607#define STACK_LOWER_LIMIT (32 * TARGET_PAGE_SIZE)
1608
1609static abi_ulong setup_arg_pages(struct linux_binprm *bprm,
1610 struct image_info *info)
1611{
1612 abi_ulong size, error, guard;
1613
1614 size = guest_stack_size;
1615 if (size < STACK_LOWER_LIMIT) {
1616 size = STACK_LOWER_LIMIT;
1617 }
1618 guard = TARGET_PAGE_SIZE;
1619 if (guard < qemu_real_host_page_size) {
1620 guard = qemu_real_host_page_size;
1621 }
1622
1623 error = target_mmap(0, size + guard, PROT_READ | PROT_WRITE,
1624 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
1625 if (error == -1) {
1626 perror("mmap stack");
1627 exit(-1);
1628 }
1629
1630
1631 if (STACK_GROWS_DOWN) {
1632 target_mprotect(error, guard, PROT_NONE);
1633 info->stack_limit = error + guard;
1634 return info->stack_limit + size - sizeof(void *);
1635 } else {
1636 target_mprotect(error + size, guard, PROT_NONE);
1637 info->stack_limit = error + size;
1638 return error;
1639 }
1640}
1641
1642
1643
1644static void zero_bss(abi_ulong elf_bss, abi_ulong last_bss, int prot)
1645{
1646 uintptr_t host_start, host_map_start, host_end;
1647
1648 last_bss = TARGET_PAGE_ALIGN(last_bss);
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661 host_start = (uintptr_t) g2h(elf_bss);
1662 host_end = (uintptr_t) g2h(last_bss);
1663 host_map_start = REAL_HOST_PAGE_ALIGN(host_start);
1664
1665 if (host_map_start < host_end) {
1666 void *p = mmap((void *)host_map_start, host_end - host_map_start,
1667 prot, MAP_FIXED | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
1668 if (p == MAP_FAILED) {
1669 perror("cannot mmap brk");
1670 exit(-1);
1671 }
1672 }
1673
1674
1675 if ((page_get_flags(last_bss-1) & prot) != prot) {
1676 page_set_flags(elf_bss & TARGET_PAGE_MASK, last_bss, prot | PAGE_VALID);
1677 }
1678
1679 if (host_start < host_map_start) {
1680 memset((void *)host_start, 0, host_map_start - host_start);
1681 }
1682}
1683
1684#ifdef CONFIG_USE_FDPIC
1685static abi_ulong loader_build_fdpic_loadmap(struct image_info *info, abi_ulong sp)
1686{
1687 uint16_t n;
1688 struct elf32_fdpic_loadseg *loadsegs = info->loadsegs;
1689
1690
1691 n = info->nsegs;
1692 while (n--) {
1693 sp -= 12;
1694 put_user_u32(loadsegs[n].addr, sp+0);
1695 put_user_u32(loadsegs[n].p_vaddr, sp+4);
1696 put_user_u32(loadsegs[n].p_memsz, sp+8);
1697 }
1698
1699
1700 sp -= 4;
1701 put_user_u16(0, sp+0);
1702 put_user_u16(info->nsegs, sp+2);
1703
1704 info->personality = PER_LINUX_FDPIC;
1705 info->loadmap_addr = sp;
1706
1707 return sp;
1708}
1709#endif
1710
1711static abi_ulong create_elf_tables(abi_ulong p, int argc, int envc,
1712 struct elfhdr *exec,
1713 struct image_info *info,
1714 struct image_info *interp_info)
1715{
1716 abi_ulong sp;
1717 abi_ulong u_argc, u_argv, u_envp, u_auxv;
1718 int size;
1719 int i;
1720 abi_ulong u_rand_bytes;
1721 uint8_t k_rand_bytes[16];
1722 abi_ulong u_platform;
1723 const char *k_platform;
1724 const int n = sizeof(elf_addr_t);
1725
1726 sp = p;
1727
1728#ifdef CONFIG_USE_FDPIC
1729
1730 if (elf_is_fdpic(exec)) {
1731
1732 sp &= ~3;
1733 sp = loader_build_fdpic_loadmap(info, sp);
1734 info->other_info = interp_info;
1735 if (interp_info) {
1736 interp_info->other_info = info;
1737 sp = loader_build_fdpic_loadmap(interp_info, sp);
1738 }
1739 }
1740#endif
1741
1742 u_platform = 0;
1743 k_platform = ELF_PLATFORM;
1744 if (k_platform) {
1745 size_t len = strlen(k_platform) + 1;
1746 if (STACK_GROWS_DOWN) {
1747 sp -= (len + n - 1) & ~(n - 1);
1748 u_platform = sp;
1749
1750 memcpy_to_target(sp, k_platform, len);
1751 } else {
1752 memcpy_to_target(sp, k_platform, len);
1753 u_platform = sp;
1754 sp += len + 1;
1755 }
1756 }
1757
1758
1759
1760
1761 if (STACK_GROWS_DOWN) {
1762 sp = QEMU_ALIGN_DOWN(sp, 16);
1763 } else {
1764 sp = QEMU_ALIGN_UP(sp, 16);
1765 }
1766
1767
1768
1769
1770
1771 for (i = 0; i < 16; i++) {
1772 k_rand_bytes[i] = rand();
1773 }
1774 if (STACK_GROWS_DOWN) {
1775 sp -= 16;
1776 u_rand_bytes = sp;
1777
1778 memcpy_to_target(sp, k_rand_bytes, 16);
1779 } else {
1780 memcpy_to_target(sp, k_rand_bytes, 16);
1781 u_rand_bytes = sp;
1782 sp += 16;
1783 }
1784
1785 size = (DLINFO_ITEMS + 1) * 2;
1786 if (k_platform)
1787 size += 2;
1788#ifdef DLINFO_ARCH_ITEMS
1789 size += DLINFO_ARCH_ITEMS * 2;
1790#endif
1791#ifdef ELF_HWCAP2
1792 size += 2;
1793#endif
1794 info->auxv_len = size * n;
1795
1796 size += envc + argc + 2;
1797 size += 1;
1798 size *= n;
1799
1800
1801 if (STACK_GROWS_DOWN) {
1802 u_argc = QEMU_ALIGN_DOWN(sp - size, STACK_ALIGNMENT);
1803 sp = u_argc;
1804 } else {
1805 u_argc = sp;
1806 sp = QEMU_ALIGN_UP(sp + size, STACK_ALIGNMENT);
1807 }
1808
1809 u_argv = u_argc + n;
1810 u_envp = u_argv + (argc + 1) * n;
1811 u_auxv = u_envp + (envc + 1) * n;
1812 info->saved_auxv = u_auxv;
1813 info->arg_start = u_argv;
1814 info->arg_end = u_argv + argc * n;
1815
1816
1817
1818
1819#define NEW_AUX_ENT(id, val) do { \
1820 put_user_ual(id, u_auxv); u_auxv += n; \
1821 put_user_ual(val, u_auxv); u_auxv += n; \
1822 } while(0)
1823
1824#ifdef ARCH_DLINFO
1825
1826
1827
1828
1829 ARCH_DLINFO;
1830#endif
1831
1832
1833
1834 NEW_AUX_ENT(AT_PHDR, (abi_ulong)(info->load_addr + exec->e_phoff));
1835 NEW_AUX_ENT(AT_PHENT, (abi_ulong)(sizeof (struct elf_phdr)));
1836 NEW_AUX_ENT(AT_PHNUM, (abi_ulong)(exec->e_phnum));
1837 NEW_AUX_ENT(AT_PAGESZ, (abi_ulong)(MAX(TARGET_PAGE_SIZE, getpagesize())));
1838 NEW_AUX_ENT(AT_BASE, (abi_ulong)(interp_info ? interp_info->load_addr : 0));
1839 NEW_AUX_ENT(AT_FLAGS, (abi_ulong)0);
1840 NEW_AUX_ENT(AT_ENTRY, info->entry);
1841 NEW_AUX_ENT(AT_UID, (abi_ulong) getuid());
1842 NEW_AUX_ENT(AT_EUID, (abi_ulong) geteuid());
1843 NEW_AUX_ENT(AT_GID, (abi_ulong) getgid());
1844 NEW_AUX_ENT(AT_EGID, (abi_ulong) getegid());
1845 NEW_AUX_ENT(AT_HWCAP, (abi_ulong) ELF_HWCAP);
1846 NEW_AUX_ENT(AT_CLKTCK, (abi_ulong) sysconf(_SC_CLK_TCK));
1847 NEW_AUX_ENT(AT_RANDOM, (abi_ulong) u_rand_bytes);
1848 NEW_AUX_ENT(AT_SECURE, (abi_ulong) qemu_getauxval(AT_SECURE));
1849
1850#ifdef ELF_HWCAP2
1851 NEW_AUX_ENT(AT_HWCAP2, (abi_ulong) ELF_HWCAP2);
1852#endif
1853
1854 if (u_platform) {
1855 NEW_AUX_ENT(AT_PLATFORM, u_platform);
1856 }
1857 NEW_AUX_ENT (AT_NULL, 0);
1858#undef NEW_AUX_ENT
1859
1860
1861
1862
1863 assert(info->auxv_len == u_auxv - info->saved_auxv);
1864
1865 put_user_ual(argc, u_argc);
1866
1867 p = info->arg_strings;
1868 for (i = 0; i < argc; ++i) {
1869 put_user_ual(p, u_argv);
1870 u_argv += n;
1871 p += target_strlen(p) + 1;
1872 }
1873 put_user_ual(0, u_argv);
1874
1875 p = info->env_strings;
1876 for (i = 0; i < envc; ++i) {
1877 put_user_ual(p, u_envp);
1878 u_envp += n;
1879 p += target_strlen(p) + 1;
1880 }
1881 put_user_ual(0, u_envp);
1882
1883 return sp;
1884}
1885
1886unsigned long init_guest_space(unsigned long host_start,
1887 unsigned long host_size,
1888 unsigned long guest_start,
1889 bool fixed)
1890{
1891 unsigned long current_start, aligned_start;
1892 int flags;
1893
1894 assert(host_start || host_size);
1895
1896
1897
1898 if (host_start && !host_size) {
1899#if defined(TARGET_ARM) && !defined(TARGET_AARCH64)
1900 if (init_guest_commpage(host_start, host_size) != 1) {
1901 return (unsigned long)-1;
1902 }
1903#endif
1904 return host_start;
1905 }
1906
1907
1908 current_start = host_start & qemu_host_page_mask;
1909 flags = MAP_ANONYMOUS | MAP_PRIVATE | MAP_NORESERVE;
1910 if (fixed) {
1911 flags |= MAP_FIXED;
1912 }
1913
1914
1915
1916
1917#if defined(TARGET_ARM) && !defined(TARGET_AARCH64)
1918
1919
1920
1921
1922
1923 if (!host_start) {
1924 unsigned long guest_full_size, host_full_size, real_start;
1925
1926 guest_full_size =
1927 (0xffff0f00 & qemu_host_page_mask) + qemu_host_page_size;
1928 host_full_size = guest_full_size - guest_start;
1929 real_start = (unsigned long)
1930 mmap(NULL, host_full_size, PROT_NONE, flags, -1, 0);
1931 if (real_start == (unsigned long)-1) {
1932 if (host_size < host_full_size - qemu_host_page_size) {
1933
1934
1935
1936
1937
1938
1939 goto naive;
1940 }
1941 return (unsigned long)-1;
1942 }
1943 munmap((void *)real_start, host_full_size);
1944 if (real_start & ~qemu_host_page_mask) {
1945
1946
1947
1948 unsigned long real_size = host_full_size + qemu_host_page_size;
1949 real_start = (unsigned long)
1950 mmap(NULL, real_size, PROT_NONE, flags, -1, 0);
1951 if (real_start == (unsigned long)-1) {
1952 if (host_size < host_full_size - qemu_host_page_size) {
1953 goto naive;
1954 }
1955 return (unsigned long)-1;
1956 }
1957 munmap((void *)real_start, real_size);
1958 real_start = HOST_PAGE_ALIGN(real_start);
1959 }
1960 current_start = real_start;
1961 }
1962 naive:
1963#endif
1964
1965 while (1) {
1966 unsigned long real_start, real_size, aligned_size;
1967 aligned_size = real_size = host_size;
1968
1969
1970
1971
1972
1973 real_start = (unsigned long)
1974 mmap((void *)current_start, host_size, PROT_NONE, flags, -1, 0);
1975 if (real_start == (unsigned long)-1) {
1976 return (unsigned long)-1;
1977 }
1978
1979
1980 if (host_start && real_start != current_start) {
1981 goto try_again;
1982 }
1983
1984
1985 if (real_start & ~qemu_host_page_mask) {
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006 munmap((void *)real_start, host_size);
2007 real_size = aligned_size + qemu_host_page_size;
2008 real_start = (unsigned long)
2009 mmap((void *)real_start, real_size, PROT_NONE, flags, -1, 0);
2010 if (real_start == (unsigned long)-1) {
2011 return (unsigned long)-1;
2012 }
2013 aligned_start = HOST_PAGE_ALIGN(real_start);
2014 } else {
2015 aligned_start = real_start;
2016 }
2017
2018#if defined(TARGET_ARM) && !defined(TARGET_AARCH64)
2019
2020 int valid = init_guest_commpage(aligned_start - guest_start,
2021 aligned_size + guest_start);
2022 if (valid == -1) {
2023 munmap((void *)real_start, real_size);
2024 return (unsigned long)-1;
2025 } else if (valid == 0) {
2026 goto try_again;
2027 }
2028#endif
2029
2030
2031
2032
2033 break;
2034
2035 try_again:
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049 munmap((void *)real_start, real_size);
2050 current_start += qemu_host_page_size;
2051 if (host_start == current_start) {
2052
2053
2054
2055 return (unsigned long)-1;
2056 }
2057 }
2058
2059 qemu_log_mask(CPU_LOG_PAGE, "Reserved 0x%lx bytes of guest address space\n", host_size);
2060
2061 return aligned_start;
2062}
2063
2064static void probe_guest_base(const char *image_name,
2065 abi_ulong loaddr, abi_ulong hiaddr)
2066{
2067
2068
2069
2070
2071 const char *errmsg;
2072 if (!have_guest_base && !reserved_va) {
2073 unsigned long host_start, real_start, host_size;
2074
2075
2076 loaddr &= qemu_host_page_mask;
2077 hiaddr = HOST_PAGE_ALIGN(hiaddr);
2078
2079 if (loaddr < mmap_min_addr) {
2080 host_start = HOST_PAGE_ALIGN(mmap_min_addr);
2081 } else {
2082 host_start = loaddr;
2083 if (host_start != loaddr) {
2084 errmsg = "Address overflow loading ELF binary";
2085 goto exit_errmsg;
2086 }
2087 }
2088 host_size = hiaddr - loaddr;
2089
2090
2091
2092
2093 real_start = init_guest_space(host_start, host_size, loaddr, false);
2094 if (real_start == (unsigned long)-1) {
2095 errmsg = "Unable to find space for application";
2096 goto exit_errmsg;
2097 }
2098 guest_base = real_start - loaddr;
2099
2100 qemu_log_mask(CPU_LOG_PAGE, "Relocating guest address space from 0x"
2101 TARGET_ABI_FMT_lx " to 0x%lx\n",
2102 loaddr, real_start);
2103 }
2104 return;
2105
2106exit_errmsg:
2107 fprintf(stderr, "%s: %s\n", image_name, errmsg);
2108 exit(-1);
2109}
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124static void load_elf_image(const char *image_name, int image_fd,
2125 struct image_info *info, char **pinterp_name,
2126 char bprm_buf[BPRM_BUF_SIZE])
2127{
2128 struct elfhdr *ehdr = (struct elfhdr *)bprm_buf;
2129 struct elf_phdr *phdr;
2130 abi_ulong load_addr, load_bias, loaddr, hiaddr, error;
2131 int i, retval;
2132 const char *errmsg;
2133
2134
2135 errmsg = "Invalid ELF image for this architecture";
2136 if (!elf_check_ident(ehdr)) {
2137 goto exit_errmsg;
2138 }
2139 bswap_ehdr(ehdr);
2140 if (!elf_check_ehdr(ehdr)) {
2141 goto exit_errmsg;
2142 }
2143
2144 i = ehdr->e_phnum * sizeof(struct elf_phdr);
2145 if (ehdr->e_phoff + i <= BPRM_BUF_SIZE) {
2146 phdr = (struct elf_phdr *)(bprm_buf + ehdr->e_phoff);
2147 } else {
2148 phdr = (struct elf_phdr *) alloca(i);
2149 retval = pread(image_fd, phdr, i, ehdr->e_phoff);
2150 if (retval != i) {
2151 goto exit_read;
2152 }
2153 }
2154 bswap_phdr(phdr, ehdr->e_phnum);
2155
2156#ifdef CONFIG_USE_FDPIC
2157 info->nsegs = 0;
2158 info->pt_dynamic_addr = 0;
2159#endif
2160
2161 mmap_lock();
2162
2163
2164
2165 loaddr = -1, hiaddr = 0;
2166 for (i = 0; i < ehdr->e_phnum; ++i) {
2167 if (phdr[i].p_type == PT_LOAD) {
2168 abi_ulong a = phdr[i].p_vaddr - phdr[i].p_offset;
2169 if (a < loaddr) {
2170 loaddr = a;
2171 }
2172 a = phdr[i].p_vaddr + phdr[i].p_memsz;
2173 if (a > hiaddr) {
2174 hiaddr = a;
2175 }
2176#ifdef CONFIG_USE_FDPIC
2177 ++info->nsegs;
2178#endif
2179 }
2180 }
2181
2182 load_addr = loaddr;
2183 if (ehdr->e_type == ET_DYN) {
2184
2185
2186
2187
2188
2189 load_addr = target_mmap(loaddr, hiaddr - loaddr, PROT_NONE,
2190 MAP_PRIVATE | MAP_ANON | MAP_NORESERVE,
2191 -1, 0);
2192 if (load_addr == -1) {
2193 goto exit_perror;
2194 }
2195 } else if (pinterp_name != NULL) {
2196
2197
2198
2199 probe_guest_base(image_name, loaddr, hiaddr);
2200 }
2201 load_bias = load_addr - loaddr;
2202
2203#ifdef CONFIG_USE_FDPIC
2204 {
2205 struct elf32_fdpic_loadseg *loadsegs = info->loadsegs =
2206 g_malloc(sizeof(*loadsegs) * info->nsegs);
2207
2208 for (i = 0; i < ehdr->e_phnum; ++i) {
2209 switch (phdr[i].p_type) {
2210 case PT_DYNAMIC:
2211 info->pt_dynamic_addr = phdr[i].p_vaddr + load_bias;
2212 break;
2213 case PT_LOAD:
2214 loadsegs->addr = phdr[i].p_vaddr + load_bias;
2215 loadsegs->p_vaddr = phdr[i].p_vaddr;
2216 loadsegs->p_memsz = phdr[i].p_memsz;
2217 ++loadsegs;
2218 break;
2219 }
2220 }
2221 }
2222#endif
2223
2224 info->load_bias = load_bias;
2225 info->load_addr = load_addr;
2226 info->entry = ehdr->e_entry + load_bias;
2227 info->start_code = -1;
2228 info->end_code = 0;
2229 info->start_data = -1;
2230 info->end_data = 0;
2231 info->brk = 0;
2232 info->elf_flags = ehdr->e_flags;
2233
2234 for (i = 0; i < ehdr->e_phnum; i++) {
2235 struct elf_phdr *eppnt = phdr + i;
2236 if (eppnt->p_type == PT_LOAD) {
2237 abi_ulong vaddr, vaddr_po, vaddr_ps, vaddr_ef, vaddr_em;
2238 int elf_prot = 0;
2239
2240 if (eppnt->p_flags & PF_R) elf_prot = PROT_READ;
2241 if (eppnt->p_flags & PF_W) elf_prot |= PROT_WRITE;
2242 if (eppnt->p_flags & PF_X) elf_prot |= PROT_EXEC;
2243
2244 vaddr = load_bias + eppnt->p_vaddr;
2245 vaddr_po = TARGET_ELF_PAGEOFFSET(vaddr);
2246 vaddr_ps = TARGET_ELF_PAGESTART(vaddr);
2247
2248 error = target_mmap(vaddr_ps, eppnt->p_filesz + vaddr_po,
2249 elf_prot, MAP_PRIVATE | MAP_FIXED,
2250 image_fd, eppnt->p_offset - vaddr_po);
2251 if (error == -1) {
2252 goto exit_perror;
2253 }
2254
2255 vaddr_ef = vaddr + eppnt->p_filesz;
2256 vaddr_em = vaddr + eppnt->p_memsz;
2257
2258
2259 if (vaddr_ef < vaddr_em) {
2260 zero_bss(vaddr_ef, vaddr_em, elf_prot);
2261 }
2262
2263
2264 if (elf_prot & PROT_EXEC) {
2265 if (vaddr < info->start_code) {
2266 info->start_code = vaddr;
2267 }
2268 if (vaddr_ef > info->end_code) {
2269 info->end_code = vaddr_ef;
2270 }
2271 }
2272 if (elf_prot & PROT_WRITE) {
2273 if (vaddr < info->start_data) {
2274 info->start_data = vaddr;
2275 }
2276 if (vaddr_ef > info->end_data) {
2277 info->end_data = vaddr_ef;
2278 }
2279 if (vaddr_em > info->brk) {
2280 info->brk = vaddr_em;
2281 }
2282 }
2283 } else if (eppnt->p_type == PT_INTERP && pinterp_name) {
2284 char *interp_name;
2285
2286 if (*pinterp_name) {
2287 errmsg = "Multiple PT_INTERP entries";
2288 goto exit_errmsg;
2289 }
2290 interp_name = malloc(eppnt->p_filesz);
2291 if (!interp_name) {
2292 goto exit_perror;
2293 }
2294
2295 if (eppnt->p_offset + eppnt->p_filesz <= BPRM_BUF_SIZE) {
2296 memcpy(interp_name, bprm_buf + eppnt->p_offset,
2297 eppnt->p_filesz);
2298 } else {
2299 retval = pread(image_fd, interp_name, eppnt->p_filesz,
2300 eppnt->p_offset);
2301 if (retval != eppnt->p_filesz) {
2302 goto exit_perror;
2303 }
2304 }
2305 if (interp_name[eppnt->p_filesz - 1] != 0) {
2306 errmsg = "Invalid PT_INTERP entry";
2307 goto exit_errmsg;
2308 }
2309 *pinterp_name = interp_name;
2310 }
2311 }
2312
2313 if (info->end_data == 0) {
2314 info->start_data = info->end_code;
2315 info->end_data = info->end_code;
2316 info->brk = info->end_code;
2317 }
2318
2319 if (qemu_log_enabled()) {
2320 load_symbols(ehdr, image_fd, load_bias);
2321 }
2322
2323 mmap_unlock();
2324
2325 close(image_fd);
2326 return;
2327
2328 exit_read:
2329 if (retval >= 0) {
2330 errmsg = "Incomplete read of file header";
2331 goto exit_errmsg;
2332 }
2333 exit_perror:
2334 errmsg = strerror(errno);
2335 exit_errmsg:
2336 fprintf(stderr, "%s: %s\n", image_name, errmsg);
2337 exit(-1);
2338}
2339
2340static void load_elf_interp(const char *filename, struct image_info *info,
2341 char bprm_buf[BPRM_BUF_SIZE])
2342{
2343 int fd, retval;
2344
2345 fd = open(path(filename), O_RDONLY);
2346 if (fd < 0) {
2347 goto exit_perror;
2348 }
2349
2350 retval = read(fd, bprm_buf, BPRM_BUF_SIZE);
2351 if (retval < 0) {
2352 goto exit_perror;
2353 }
2354 if (retval < BPRM_BUF_SIZE) {
2355 memset(bprm_buf + retval, 0, BPRM_BUF_SIZE - retval);
2356 }
2357
2358 load_elf_image(filename, fd, info, NULL, bprm_buf);
2359 return;
2360
2361 exit_perror:
2362 fprintf(stderr, "%s: %s\n", filename, strerror(errno));
2363 exit(-1);
2364}
2365
2366static int symfind(const void *s0, const void *s1)
2367{
2368 target_ulong addr = *(target_ulong *)s0;
2369 struct elf_sym *sym = (struct elf_sym *)s1;
2370 int result = 0;
2371 if (addr < sym->st_value) {
2372 result = -1;
2373 } else if (addr >= sym->st_value + sym->st_size) {
2374 result = 1;
2375 }
2376 return result;
2377}
2378
2379static const char *lookup_symbolxx(struct syminfo *s, target_ulong orig_addr)
2380{
2381#if ELF_CLASS == ELFCLASS32
2382 struct elf_sym *syms = s->disas_symtab.elf32;
2383#else
2384 struct elf_sym *syms = s->disas_symtab.elf64;
2385#endif
2386
2387
2388 struct elf_sym *sym;
2389
2390 sym = bsearch(&orig_addr, syms, s->disas_num_syms, sizeof(*syms), symfind);
2391 if (sym != NULL) {
2392 return s->disas_strtab + sym->st_name;
2393 }
2394
2395 return "";
2396}
2397
2398
2399static int symcmp(const void *s0, const void *s1)
2400{
2401 struct elf_sym *sym0 = (struct elf_sym *)s0;
2402 struct elf_sym *sym1 = (struct elf_sym *)s1;
2403 return (sym0->st_value < sym1->st_value)
2404 ? -1
2405 : ((sym0->st_value > sym1->st_value) ? 1 : 0);
2406}
2407
2408
2409static void load_symbols(struct elfhdr *hdr, int fd, abi_ulong load_bias)
2410{
2411 int i, shnum, nsyms, sym_idx = 0, str_idx = 0;
2412 uint64_t segsz;
2413 struct elf_shdr *shdr;
2414 char *strings = NULL;
2415 struct syminfo *s = NULL;
2416 struct elf_sym *new_syms, *syms = NULL;
2417
2418 shnum = hdr->e_shnum;
2419 i = shnum * sizeof(struct elf_shdr);
2420 shdr = (struct elf_shdr *)alloca(i);
2421 if (pread(fd, shdr, i, hdr->e_shoff) != i) {
2422 return;
2423 }
2424
2425 bswap_shdr(shdr, shnum);
2426 for (i = 0; i < shnum; ++i) {
2427 if (shdr[i].sh_type == SHT_SYMTAB) {
2428 sym_idx = i;
2429 str_idx = shdr[i].sh_link;
2430 goto found;
2431 }
2432 }
2433
2434
2435 return;
2436
2437 found:
2438
2439 s = g_try_new(struct syminfo, 1);
2440 if (!s) {
2441 goto give_up;
2442 }
2443
2444 segsz = shdr[str_idx].sh_size;
2445 s->disas_strtab = strings = g_try_malloc(segsz);
2446 if (!strings ||
2447 pread(fd, strings, segsz, shdr[str_idx].sh_offset) != segsz) {
2448 goto give_up;
2449 }
2450
2451 segsz = shdr[sym_idx].sh_size;
2452 syms = g_try_malloc(segsz);
2453 if (!syms || pread(fd, syms, segsz, shdr[sym_idx].sh_offset) != segsz) {
2454 goto give_up;
2455 }
2456
2457 if (segsz / sizeof(struct elf_sym) > INT_MAX) {
2458
2459
2460
2461 goto give_up;
2462 }
2463 nsyms = segsz / sizeof(struct elf_sym);
2464 for (i = 0; i < nsyms; ) {
2465 bswap_sym(syms + i);
2466
2467 if (syms[i].st_shndx == SHN_UNDEF
2468 || syms[i].st_shndx >= SHN_LORESERVE
2469 || ELF_ST_TYPE(syms[i].st_info) != STT_FUNC) {
2470 if (i < --nsyms) {
2471 syms[i] = syms[nsyms];
2472 }
2473 } else {
2474#if defined(TARGET_ARM) || defined (TARGET_MIPS)
2475
2476 syms[i].st_value &= ~(target_ulong)1;
2477#endif
2478 syms[i].st_value += load_bias;
2479 i++;
2480 }
2481 }
2482
2483
2484 if (nsyms == 0) {
2485 goto give_up;
2486 }
2487
2488
2489
2490
2491
2492 new_syms = g_try_renew(struct elf_sym, syms, nsyms);
2493 if (new_syms == NULL) {
2494 goto give_up;
2495 }
2496 syms = new_syms;
2497
2498 qsort(syms, nsyms, sizeof(*syms), symcmp);
2499
2500 s->disas_num_syms = nsyms;
2501#if ELF_CLASS == ELFCLASS32
2502 s->disas_symtab.elf32 = syms;
2503#else
2504 s->disas_symtab.elf64 = syms;
2505#endif
2506 s->lookup_symbol = lookup_symbolxx;
2507 s->next = syminfos;
2508 syminfos = s;
2509
2510 return;
2511
2512give_up:
2513 g_free(s);
2514 g_free(strings);
2515 g_free(syms);
2516}
2517
2518uint32_t get_elf_eflags(int fd)
2519{
2520 struct elfhdr ehdr;
2521 off_t offset;
2522 int ret;
2523
2524
2525 offset = lseek(fd, 0, SEEK_SET);
2526 if (offset == (off_t) -1) {
2527 return 0;
2528 }
2529 ret = read(fd, &ehdr, sizeof(ehdr));
2530 if (ret < sizeof(ehdr)) {
2531 return 0;
2532 }
2533 offset = lseek(fd, offset, SEEK_SET);
2534 if (offset == (off_t) -1) {
2535 return 0;
2536 }
2537
2538
2539 if (!elf_check_ident(&ehdr)) {
2540 return 0;
2541 }
2542
2543
2544 bswap_ehdr(&ehdr);
2545 if (!elf_check_ehdr(&ehdr)) {
2546 return 0;
2547 }
2548
2549
2550 return ehdr.e_flags;
2551}
2552
2553int load_elf_binary(struct linux_binprm *bprm, struct image_info *info)
2554{
2555 struct image_info interp_info;
2556 struct elfhdr elf_ex;
2557 char *elf_interpreter = NULL;
2558 char *scratch;
2559
2560 info->start_mmap = (abi_ulong)ELF_START_MMAP;
2561
2562 load_elf_image(bprm->filename, bprm->fd, info,
2563 &elf_interpreter, bprm->buf);
2564
2565
2566
2567
2568 elf_ex = *(struct elfhdr *)bprm->buf;
2569
2570
2571
2572 bprm->p = setup_arg_pages(bprm, info);
2573
2574 scratch = g_new0(char, TARGET_PAGE_SIZE);
2575 if (STACK_GROWS_DOWN) {
2576 bprm->p = copy_elf_strings(1, &bprm->filename, scratch,
2577 bprm->p, info->stack_limit);
2578 info->file_string = bprm->p;
2579 bprm->p = copy_elf_strings(bprm->envc, bprm->envp, scratch,
2580 bprm->p, info->stack_limit);
2581 info->env_strings = bprm->p;
2582 bprm->p = copy_elf_strings(bprm->argc, bprm->argv, scratch,
2583 bprm->p, info->stack_limit);
2584 info->arg_strings = bprm->p;
2585 } else {
2586 info->arg_strings = bprm->p;
2587 bprm->p = copy_elf_strings(bprm->argc, bprm->argv, scratch,
2588 bprm->p, info->stack_limit);
2589 info->env_strings = bprm->p;
2590 bprm->p = copy_elf_strings(bprm->envc, bprm->envp, scratch,
2591 bprm->p, info->stack_limit);
2592 info->file_string = bprm->p;
2593 bprm->p = copy_elf_strings(1, &bprm->filename, scratch,
2594 bprm->p, info->stack_limit);
2595 }
2596
2597 g_free(scratch);
2598
2599 if (!bprm->p) {
2600 fprintf(stderr, "%s: %s\n", bprm->filename, strerror(E2BIG));
2601 exit(-1);
2602 }
2603
2604 if (elf_interpreter) {
2605 load_elf_interp(elf_interpreter, &interp_info, bprm->buf);
2606
2607
2608
2609
2610 if (strcmp(elf_interpreter, "/usr/lib/libc.so.1") == 0
2611 || strcmp(elf_interpreter, "/usr/lib/ld.so.1") == 0) {
2612 info->personality = PER_SVR4;
2613
2614
2615
2616
2617
2618 target_mmap(0, qemu_host_page_size, PROT_READ | PROT_EXEC,
2619 MAP_FIXED | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
2620 }
2621 }
2622
2623 bprm->p = create_elf_tables(bprm->p, bprm->argc, bprm->envc, &elf_ex,
2624 info, (elf_interpreter ? &interp_info : NULL));
2625 info->start_stack = bprm->p;
2626
2627
2628
2629
2630
2631 if (elf_interpreter) {
2632 info->load_bias = interp_info.load_bias;
2633 info->entry = interp_info.entry;
2634 free(elf_interpreter);
2635 }
2636
2637#ifdef USE_ELF_CORE_DUMP
2638 bprm->core_dump = &elf_core_dump;
2639#endif
2640
2641 return 0;
2642}
2643
2644#ifdef USE_ELF_CORE_DUMP
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685struct memelfnote {
2686 const char *name;
2687 size_t namesz;
2688 size_t namesz_rounded;
2689 int type;
2690 size_t datasz;
2691 size_t datasz_rounded;
2692 void *data;
2693 size_t notesz;
2694};
2695
2696struct target_elf_siginfo {
2697 abi_int si_signo;
2698 abi_int si_code;
2699 abi_int si_errno;
2700};
2701
2702struct target_elf_prstatus {
2703 struct target_elf_siginfo pr_info;
2704 abi_short pr_cursig;
2705 abi_ulong pr_sigpend;
2706 abi_ulong pr_sighold;
2707 target_pid_t pr_pid;
2708 target_pid_t pr_ppid;
2709 target_pid_t pr_pgrp;
2710 target_pid_t pr_sid;
2711 struct target_timeval pr_utime;
2712 struct target_timeval pr_stime;
2713 struct target_timeval pr_cutime;
2714 struct target_timeval pr_cstime;
2715 target_elf_gregset_t pr_reg;
2716 abi_int pr_fpvalid;
2717};
2718
2719#define ELF_PRARGSZ (80)
2720
2721struct target_elf_prpsinfo {
2722 char pr_state;
2723 char pr_sname;
2724 char pr_zomb;
2725 char pr_nice;
2726 abi_ulong pr_flag;
2727 target_uid_t pr_uid;
2728 target_gid_t pr_gid;
2729 target_pid_t pr_pid, pr_ppid, pr_pgrp, pr_sid;
2730
2731 char pr_fname[16];
2732 char pr_psargs[ELF_PRARGSZ];
2733};
2734
2735
2736struct elf_thread_status {
2737 QTAILQ_ENTRY(elf_thread_status) ets_link;
2738 struct target_elf_prstatus prstatus;
2739#if 0
2740 elf_fpregset_t fpu;
2741 struct task_struct *thread;
2742 elf_fpxregset_t xfpu;
2743#endif
2744 struct memelfnote notes[1];
2745 int num_notes;
2746};
2747
2748struct elf_note_info {
2749 struct memelfnote *notes;
2750 struct target_elf_prstatus *prstatus;
2751 struct target_elf_prpsinfo *psinfo;
2752
2753 QTAILQ_HEAD(thread_list_head, elf_thread_status) thread_list;
2754#if 0
2755
2756
2757
2758
2759 elf_fpregset_t *fpu;
2760 elf_fpxregset_t *xfpu;
2761 int thread_status_size;
2762#endif
2763 int notes_size;
2764 int numnote;
2765};
2766
2767struct vm_area_struct {
2768 target_ulong vma_start;
2769 target_ulong vma_end;
2770 abi_ulong vma_flags;
2771 QTAILQ_ENTRY(vm_area_struct) vma_link;
2772};
2773
2774struct mm_struct {
2775 QTAILQ_HEAD(, vm_area_struct) mm_mmap;
2776 int mm_count;
2777};
2778
2779static struct mm_struct *vma_init(void);
2780static void vma_delete(struct mm_struct *);
2781static int vma_add_mapping(struct mm_struct *, target_ulong,
2782 target_ulong, abi_ulong);
2783static int vma_get_mapping_count(const struct mm_struct *);
2784static struct vm_area_struct *vma_first(const struct mm_struct *);
2785static struct vm_area_struct *vma_next(struct vm_area_struct *);
2786static abi_ulong vma_dump_size(const struct vm_area_struct *);
2787static int vma_walker(void *priv, target_ulong start, target_ulong end,
2788 unsigned long flags);
2789
2790static void fill_elf_header(struct elfhdr *, int, uint16_t, uint32_t);
2791static void fill_note(struct memelfnote *, const char *, int,
2792 unsigned int, void *);
2793static void fill_prstatus(struct target_elf_prstatus *, const TaskState *, int);
2794static int fill_psinfo(struct target_elf_prpsinfo *, const TaskState *);
2795static void fill_auxv_note(struct memelfnote *, const TaskState *);
2796static void fill_elf_note_phdr(struct elf_phdr *, int, off_t);
2797static size_t note_size(const struct memelfnote *);
2798static void free_note_info(struct elf_note_info *);
2799static int fill_note_info(struct elf_note_info *, long, const CPUArchState *);
2800static void fill_thread_info(struct elf_note_info *, const CPUArchState *);
2801static int core_dump_filename(const TaskState *, char *, size_t);
2802
2803static int dump_write(int, const void *, size_t);
2804static int write_note(struct memelfnote *, int);
2805static int write_note_info(struct elf_note_info *, int);
2806
2807#ifdef BSWAP_NEEDED
2808static void bswap_prstatus(struct target_elf_prstatus *prstatus)
2809{
2810 prstatus->pr_info.si_signo = tswap32(prstatus->pr_info.si_signo);
2811 prstatus->pr_info.si_code = tswap32(prstatus->pr_info.si_code);
2812 prstatus->pr_info.si_errno = tswap32(prstatus->pr_info.si_errno);
2813 prstatus->pr_cursig = tswap16(prstatus->pr_cursig);
2814 prstatus->pr_sigpend = tswapal(prstatus->pr_sigpend);
2815 prstatus->pr_sighold = tswapal(prstatus->pr_sighold);
2816 prstatus->pr_pid = tswap32(prstatus->pr_pid);
2817 prstatus->pr_ppid = tswap32(prstatus->pr_ppid);
2818 prstatus->pr_pgrp = tswap32(prstatus->pr_pgrp);
2819 prstatus->pr_sid = tswap32(prstatus->pr_sid);
2820
2821
2822 prstatus->pr_fpvalid = tswap32(prstatus->pr_fpvalid);
2823}
2824
2825static void bswap_psinfo(struct target_elf_prpsinfo *psinfo)
2826{
2827 psinfo->pr_flag = tswapal(psinfo->pr_flag);
2828 psinfo->pr_uid = tswap16(psinfo->pr_uid);
2829 psinfo->pr_gid = tswap16(psinfo->pr_gid);
2830 psinfo->pr_pid = tswap32(psinfo->pr_pid);
2831 psinfo->pr_ppid = tswap32(psinfo->pr_ppid);
2832 psinfo->pr_pgrp = tswap32(psinfo->pr_pgrp);
2833 psinfo->pr_sid = tswap32(psinfo->pr_sid);
2834}
2835
2836static void bswap_note(struct elf_note *en)
2837{
2838 bswap32s(&en->n_namesz);
2839 bswap32s(&en->n_descsz);
2840 bswap32s(&en->n_type);
2841}
2842#else
2843static inline void bswap_prstatus(struct target_elf_prstatus *p) { }
2844static inline void bswap_psinfo(struct target_elf_prpsinfo *p) {}
2845static inline void bswap_note(struct elf_note *en) { }
2846#endif
2847
2848
2849
2850
2851
2852
2853
2854
2855static struct mm_struct *vma_init(void)
2856{
2857 struct mm_struct *mm;
2858
2859 if ((mm = g_malloc(sizeof (*mm))) == NULL)
2860 return (NULL);
2861
2862 mm->mm_count = 0;
2863 QTAILQ_INIT(&mm->mm_mmap);
2864
2865 return (mm);
2866}
2867
2868static void vma_delete(struct mm_struct *mm)
2869{
2870 struct vm_area_struct *vma;
2871
2872 while ((vma = vma_first(mm)) != NULL) {
2873 QTAILQ_REMOVE(&mm->mm_mmap, vma, vma_link);
2874 g_free(vma);
2875 }
2876 g_free(mm);
2877}
2878
2879static int vma_add_mapping(struct mm_struct *mm, target_ulong start,
2880 target_ulong end, abi_ulong flags)
2881{
2882 struct vm_area_struct *vma;
2883
2884 if ((vma = g_malloc0(sizeof (*vma))) == NULL)
2885 return (-1);
2886
2887 vma->vma_start = start;
2888 vma->vma_end = end;
2889 vma->vma_flags = flags;
2890
2891 QTAILQ_INSERT_TAIL(&mm->mm_mmap, vma, vma_link);
2892 mm->mm_count++;
2893
2894 return (0);
2895}
2896
2897static struct vm_area_struct *vma_first(const struct mm_struct *mm)
2898{
2899 return (QTAILQ_FIRST(&mm->mm_mmap));
2900}
2901
2902static struct vm_area_struct *vma_next(struct vm_area_struct *vma)
2903{
2904 return (QTAILQ_NEXT(vma, vma_link));
2905}
2906
2907static int vma_get_mapping_count(const struct mm_struct *mm)
2908{
2909 return (mm->mm_count);
2910}
2911
2912
2913
2914
2915static abi_ulong vma_dump_size(const struct vm_area_struct *vma)
2916{
2917
2918 if (!access_ok(VERIFY_READ, vma->vma_start, TARGET_PAGE_SIZE))
2919 return (0);
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929 if (vma->vma_flags & PROT_EXEC) {
2930 char page[TARGET_PAGE_SIZE];
2931
2932 copy_from_user(page, vma->vma_start, sizeof (page));
2933 if ((page[EI_MAG0] == ELFMAG0) &&
2934 (page[EI_MAG1] == ELFMAG1) &&
2935 (page[EI_MAG2] == ELFMAG2) &&
2936 (page[EI_MAG3] == ELFMAG3)) {
2937
2938
2939
2940
2941 return (0);
2942 }
2943 }
2944
2945 return (vma->vma_end - vma->vma_start);
2946}
2947
2948static int vma_walker(void *priv, target_ulong start, target_ulong end,
2949 unsigned long flags)
2950{
2951 struct mm_struct *mm = (struct mm_struct *)priv;
2952
2953 vma_add_mapping(mm, start, end, flags);
2954 return (0);
2955}
2956
2957static void fill_note(struct memelfnote *note, const char *name, int type,
2958 unsigned int sz, void *data)
2959{
2960 unsigned int namesz;
2961
2962 namesz = strlen(name) + 1;
2963 note->name = name;
2964 note->namesz = namesz;
2965 note->namesz_rounded = roundup(namesz, sizeof (int32_t));
2966 note->type = type;
2967 note->datasz = sz;
2968 note->datasz_rounded = roundup(sz, sizeof (int32_t));
2969
2970 note->data = data;
2971
2972
2973
2974
2975
2976 note->notesz = sizeof (struct elf_note) +
2977 note->namesz_rounded + note->datasz_rounded;
2978}
2979
2980static void fill_elf_header(struct elfhdr *elf, int segs, uint16_t machine,
2981 uint32_t flags)
2982{
2983 (void) memset(elf, 0, sizeof(*elf));
2984
2985 (void) memcpy(elf->e_ident, ELFMAG, SELFMAG);
2986 elf->e_ident[EI_CLASS] = ELF_CLASS;
2987 elf->e_ident[EI_DATA] = ELF_DATA;
2988 elf->e_ident[EI_VERSION] = EV_CURRENT;
2989 elf->e_ident[EI_OSABI] = ELF_OSABI;
2990
2991 elf->e_type = ET_CORE;
2992 elf->e_machine = machine;
2993 elf->e_version = EV_CURRENT;
2994 elf->e_phoff = sizeof(struct elfhdr);
2995 elf->e_flags = flags;
2996 elf->e_ehsize = sizeof(struct elfhdr);
2997 elf->e_phentsize = sizeof(struct elf_phdr);
2998 elf->e_phnum = segs;
2999
3000 bswap_ehdr(elf);
3001}
3002
3003static void fill_elf_note_phdr(struct elf_phdr *phdr, int sz, off_t offset)
3004{
3005 phdr->p_type = PT_NOTE;
3006 phdr->p_offset = offset;
3007 phdr->p_vaddr = 0;
3008 phdr->p_paddr = 0;
3009 phdr->p_filesz = sz;
3010 phdr->p_memsz = 0;
3011 phdr->p_flags = 0;
3012 phdr->p_align = 0;
3013
3014 bswap_phdr(phdr, 1);
3015}
3016
3017static size_t note_size(const struct memelfnote *note)
3018{
3019 return (note->notesz);
3020}
3021
3022static void fill_prstatus(struct target_elf_prstatus *prstatus,
3023 const TaskState *ts, int signr)
3024{
3025 (void) memset(prstatus, 0, sizeof (*prstatus));
3026 prstatus->pr_info.si_signo = prstatus->pr_cursig = signr;
3027 prstatus->pr_pid = ts->ts_tid;
3028 prstatus->pr_ppid = getppid();
3029 prstatus->pr_pgrp = getpgrp();
3030 prstatus->pr_sid = getsid(0);
3031
3032 bswap_prstatus(prstatus);
3033}
3034
3035static int fill_psinfo(struct target_elf_prpsinfo *psinfo, const TaskState *ts)
3036{
3037 char *base_filename;
3038 unsigned int i, len;
3039
3040 (void) memset(psinfo, 0, sizeof (*psinfo));
3041
3042 len = ts->info->arg_end - ts->info->arg_start;
3043 if (len >= ELF_PRARGSZ)
3044 len = ELF_PRARGSZ - 1;
3045 if (copy_from_user(&psinfo->pr_psargs, ts->info->arg_start, len))
3046 return -EFAULT;
3047 for (i = 0; i < len; i++)
3048 if (psinfo->pr_psargs[i] == 0)
3049 psinfo->pr_psargs[i] = ' ';
3050 psinfo->pr_psargs[len] = 0;
3051
3052 psinfo->pr_pid = getpid();
3053 psinfo->pr_ppid = getppid();
3054 psinfo->pr_pgrp = getpgrp();
3055 psinfo->pr_sid = getsid(0);
3056 psinfo->pr_uid = getuid();
3057 psinfo->pr_gid = getgid();
3058
3059 base_filename = g_path_get_basename(ts->bprm->filename);
3060
3061
3062
3063
3064 (void) strncpy(psinfo->pr_fname, base_filename,
3065 sizeof(psinfo->pr_fname));
3066
3067 g_free(base_filename);
3068 bswap_psinfo(psinfo);
3069 return (0);
3070}
3071
3072static void fill_auxv_note(struct memelfnote *note, const TaskState *ts)
3073{
3074 elf_addr_t auxv = (elf_addr_t)ts->info->saved_auxv;
3075 elf_addr_t orig_auxv = auxv;
3076 void *ptr;
3077 int len = ts->info->auxv_len;
3078
3079
3080
3081
3082
3083
3084
3085
3086 ptr = lock_user(VERIFY_READ, orig_auxv, len, 0);
3087 if (ptr != NULL) {
3088 fill_note(note, "CORE", NT_AUXV, len, ptr);
3089 unlock_user(ptr, auxv, len);
3090 }
3091}
3092
3093
3094
3095
3096
3097
3098
3099
3100static int core_dump_filename(const TaskState *ts, char *buf,
3101 size_t bufsize)
3102{
3103 char timestamp[64];
3104 char *base_filename = NULL;
3105 struct timeval tv;
3106 struct tm tm;
3107
3108 assert(bufsize >= PATH_MAX);
3109
3110 if (gettimeofday(&tv, NULL) < 0) {
3111 (void) fprintf(stderr, "unable to get current timestamp: %s",
3112 strerror(errno));
3113 return (-1);
3114 }
3115
3116 base_filename = g_path_get_basename(ts->bprm->filename);
3117 (void) strftime(timestamp, sizeof (timestamp), "%Y%m%d-%H%M%S",
3118 localtime_r(&tv.tv_sec, &tm));
3119 (void) snprintf(buf, bufsize, "qemu_%s_%s_%d.core",
3120 base_filename, timestamp, (int)getpid());
3121 g_free(base_filename);
3122
3123 return (0);
3124}
3125
3126static int dump_write(int fd, const void *ptr, size_t size)
3127{
3128 const char *bufp = (const char *)ptr;
3129 ssize_t bytes_written, bytes_left;
3130 struct rlimit dumpsize;
3131 off_t pos;
3132
3133 bytes_written = 0;
3134 getrlimit(RLIMIT_CORE, &dumpsize);
3135 if ((pos = lseek(fd, 0, SEEK_CUR))==-1) {
3136 if (errno == ESPIPE) {
3137 bytes_left = size;
3138 } else {
3139 return pos;
3140 }
3141 } else {
3142 if (dumpsize.rlim_cur <= pos) {
3143 return -1;
3144 } else if (dumpsize.rlim_cur == RLIM_INFINITY) {
3145 bytes_left = size;
3146 } else {
3147 size_t limit_left=dumpsize.rlim_cur - pos;
3148 bytes_left = limit_left >= size ? size : limit_left ;
3149 }
3150 }
3151
3152
3153
3154
3155
3156 do {
3157 bytes_written = write(fd, bufp, bytes_left);
3158 if (bytes_written < 0) {
3159 if (errno == EINTR)
3160 continue;
3161 return (-1);
3162 } else if (bytes_written == 0) {
3163 return (-1);
3164 }
3165 bufp += bytes_written;
3166 bytes_left -= bytes_written;
3167 } while (bytes_left > 0);
3168
3169 return (0);
3170}
3171
3172static int write_note(struct memelfnote *men, int fd)
3173{
3174 struct elf_note en;
3175
3176 en.n_namesz = men->namesz;
3177 en.n_type = men->type;
3178 en.n_descsz = men->datasz;
3179
3180 bswap_note(&en);
3181
3182 if (dump_write(fd, &en, sizeof(en)) != 0)
3183 return (-1);
3184 if (dump_write(fd, men->name, men->namesz_rounded) != 0)
3185 return (-1);
3186 if (dump_write(fd, men->data, men->datasz_rounded) != 0)
3187 return (-1);
3188
3189 return (0);
3190}
3191
3192static void fill_thread_info(struct elf_note_info *info, const CPUArchState *env)
3193{
3194 CPUState *cpu = ENV_GET_CPU((CPUArchState *)env);
3195 TaskState *ts = (TaskState *)cpu->opaque;
3196 struct elf_thread_status *ets;
3197
3198 ets = g_malloc0(sizeof (*ets));
3199 ets->num_notes = 1;
3200 fill_prstatus(&ets->prstatus, ts, 0);
3201 elf_core_copy_regs(&ets->prstatus.pr_reg, env);
3202 fill_note(&ets->notes[0], "CORE", NT_PRSTATUS, sizeof (ets->prstatus),
3203 &ets->prstatus);
3204
3205 QTAILQ_INSERT_TAIL(&info->thread_list, ets, ets_link);
3206
3207 info->notes_size += note_size(&ets->notes[0]);
3208}
3209
3210static void init_note_info(struct elf_note_info *info)
3211{
3212
3213
3214
3215
3216 memset(info, 0, sizeof (*info));
3217 QTAILQ_INIT(&info->thread_list);
3218}
3219
3220static int fill_note_info(struct elf_note_info *info,
3221 long signr, const CPUArchState *env)
3222{
3223#define NUMNOTES 3
3224 CPUState *cpu = ENV_GET_CPU((CPUArchState *)env);
3225 TaskState *ts = (TaskState *)cpu->opaque;
3226 int i;
3227
3228 info->notes = g_new0(struct memelfnote, NUMNOTES);
3229 if (info->notes == NULL)
3230 return (-ENOMEM);
3231 info->prstatus = g_malloc0(sizeof (*info->prstatus));
3232 if (info->prstatus == NULL)
3233 return (-ENOMEM);
3234 info->psinfo = g_malloc0(sizeof (*info->psinfo));
3235 if (info->prstatus == NULL)
3236 return (-ENOMEM);
3237
3238
3239
3240
3241
3242 fill_prstatus(info->prstatus, ts, signr);
3243 elf_core_copy_regs(&info->prstatus->pr_reg, env);
3244 fill_note(&info->notes[0], "CORE", NT_PRSTATUS,
3245 sizeof (*info->prstatus), info->prstatus);
3246 fill_psinfo(info->psinfo, ts);
3247 fill_note(&info->notes[1], "CORE", NT_PRPSINFO,
3248 sizeof (*info->psinfo), info->psinfo);
3249 fill_auxv_note(&info->notes[2], ts);
3250 info->numnote = 3;
3251
3252 info->notes_size = 0;
3253 for (i = 0; i < info->numnote; i++)
3254 info->notes_size += note_size(&info->notes[i]);
3255
3256
3257 cpu_list_lock();
3258 CPU_FOREACH(cpu) {
3259 if (cpu == thread_cpu) {
3260 continue;
3261 }
3262 fill_thread_info(info, (CPUArchState *)cpu->env_ptr);
3263 }
3264 cpu_list_unlock();
3265
3266 return (0);
3267}
3268
3269static void free_note_info(struct elf_note_info *info)
3270{
3271 struct elf_thread_status *ets;
3272
3273 while (!QTAILQ_EMPTY(&info->thread_list)) {
3274 ets = QTAILQ_FIRST(&info->thread_list);
3275 QTAILQ_REMOVE(&info->thread_list, ets, ets_link);
3276 g_free(ets);
3277 }
3278
3279 g_free(info->prstatus);
3280 g_free(info->psinfo);
3281 g_free(info->notes);
3282}
3283
3284static int write_note_info(struct elf_note_info *info, int fd)
3285{
3286 struct elf_thread_status *ets;
3287 int i, error = 0;
3288
3289
3290 for (i = 0; i < info->numnote; i++)
3291 if ((error = write_note(&info->notes[i], fd)) != 0)
3292 return (error);
3293
3294
3295 QTAILQ_FOREACH(ets, &info->thread_list, ets_link) {
3296 if ((error = write_note(&ets->notes[0], fd)) != 0)
3297 return (error);
3298 }
3299
3300 return (0);
3301}
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346static int elf_core_dump(int signr, const CPUArchState *env)
3347{
3348 const CPUState *cpu = ENV_GET_CPU((CPUArchState *)env);
3349 const TaskState *ts = (const TaskState *)cpu->opaque;
3350 struct vm_area_struct *vma = NULL;
3351 char corefile[PATH_MAX];
3352 struct elf_note_info info;
3353 struct elfhdr elf;
3354 struct elf_phdr phdr;
3355 struct rlimit dumpsize;
3356 struct mm_struct *mm = NULL;
3357 off_t offset = 0, data_offset = 0;
3358 int segs = 0;
3359 int fd = -1;
3360
3361 init_note_info(&info);
3362
3363 errno = 0;
3364 getrlimit(RLIMIT_CORE, &dumpsize);
3365 if (dumpsize.rlim_cur == 0)
3366 return 0;
3367
3368 if (core_dump_filename(ts, corefile, sizeof (corefile)) < 0)
3369 return (-errno);
3370
3371 if ((fd = open(corefile, O_WRONLY | O_CREAT,
3372 S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH)) < 0)
3373 return (-errno);
3374
3375
3376
3377
3378
3379
3380 if ((mm = vma_init()) == NULL)
3381 goto out;
3382
3383 walk_memory_regions(mm, vma_walker);
3384 segs = vma_get_mapping_count(mm);
3385
3386
3387
3388
3389
3390 fill_elf_header(&elf, segs + 1, ELF_MACHINE, 0);
3391 if (dump_write(fd, &elf, sizeof (elf)) != 0)
3392 goto out;
3393
3394
3395 if (fill_note_info(&info, signr, env) < 0)
3396 goto out;
3397
3398 offset += sizeof (elf);
3399 offset += (segs + 1) * sizeof (struct elf_phdr);
3400
3401
3402 fill_elf_note_phdr(&phdr, info.notes_size, offset);
3403
3404 offset += info.notes_size;
3405 if (dump_write(fd, &phdr, sizeof (phdr)) != 0)
3406 goto out;
3407
3408
3409
3410
3411
3412 data_offset = offset = roundup(offset, ELF_EXEC_PAGESIZE);
3413
3414
3415
3416
3417
3418 for (vma = vma_first(mm); vma != NULL; vma = vma_next(vma)) {
3419 (void) memset(&phdr, 0, sizeof (phdr));
3420
3421 phdr.p_type = PT_LOAD;
3422 phdr.p_offset = offset;
3423 phdr.p_vaddr = vma->vma_start;
3424 phdr.p_paddr = 0;
3425 phdr.p_filesz = vma_dump_size(vma);
3426 offset += phdr.p_filesz;
3427 phdr.p_memsz = vma->vma_end - vma->vma_start;
3428 phdr.p_flags = vma->vma_flags & PROT_READ ? PF_R : 0;
3429 if (vma->vma_flags & PROT_WRITE)
3430 phdr.p_flags |= PF_W;
3431 if (vma->vma_flags & PROT_EXEC)
3432 phdr.p_flags |= PF_X;
3433 phdr.p_align = ELF_EXEC_PAGESIZE;
3434
3435 bswap_phdr(&phdr, 1);
3436 if (dump_write(fd, &phdr, sizeof(phdr)) != 0) {
3437 goto out;
3438 }
3439 }
3440
3441
3442
3443
3444
3445 if (write_note_info(&info, fd) < 0)
3446 goto out;
3447
3448
3449 if (lseek(fd, data_offset, SEEK_SET) != data_offset)
3450 goto out;
3451
3452
3453
3454
3455 for (vma = vma_first(mm); vma != NULL; vma = vma_next(vma)) {
3456 abi_ulong addr;
3457 abi_ulong end;
3458
3459 end = vma->vma_start + vma_dump_size(vma);
3460
3461 for (addr = vma->vma_start; addr < end;
3462 addr += TARGET_PAGE_SIZE) {
3463 char page[TARGET_PAGE_SIZE];
3464 int error;
3465
3466
3467
3468
3469
3470 error = copy_from_user(page, addr, sizeof (page));
3471 if (error != 0) {
3472 (void) fprintf(stderr, "unable to dump " TARGET_ABI_FMT_lx "\n",
3473 addr);
3474 errno = -error;
3475 goto out;
3476 }
3477 if (dump_write(fd, page, TARGET_PAGE_SIZE) < 0)
3478 goto out;
3479 }
3480 }
3481
3482 out:
3483 free_note_info(&info);
3484 if (mm != NULL)
3485 vma_delete(mm);
3486 (void) close(fd);
3487
3488 if (errno != 0)
3489 return (-errno);
3490 return (0);
3491}
3492#endif
3493
3494void do_init_thread(struct target_pt_regs *regs, struct image_info *infop)
3495{
3496 init_thread(regs, infop);
3497}
3498