1
2#include "qemu/osdep.h"
3#include <sys/param.h>
4
5#include <sys/resource.h>
6#include <sys/shm.h>
7
8#include "qemu.h"
9#include "user-internals.h"
10#include "signal-common.h"
11#include "loader.h"
12#include "user-mmap.h"
13#include "disas/disas.h"
14#include "qemu/bitops.h"
15#include "qemu/path.h"
16#include "qemu/queue.h"
17#include "qemu/guest-random.h"
18#include "qemu/units.h"
19#include "qemu/selfmap.h"
20#include "qapi/error.h"
21#include "target_signal.h"
22
23#ifdef _ARCH_PPC64
24#undef ARCH_DLINFO
25#undef ELF_PLATFORM
26#undef ELF_HWCAP
27#undef ELF_HWCAP2
28#undef ELF_CLASS
29#undef ELF_DATA
30#undef ELF_ARCH
31#endif
32
33#define ELF_OSABI ELFOSABI_SYSV
34
35
36
37
38
39
40
41
42enum {
43 ADDR_NO_RANDOMIZE = 0x0040000,
44 FDPIC_FUNCPTRS = 0x0080000,
45
46 MMAP_PAGE_ZERO = 0x0100000,
47 ADDR_COMPAT_LAYOUT = 0x0200000,
48 READ_IMPLIES_EXEC = 0x0400000,
49 ADDR_LIMIT_32BIT = 0x0800000,
50 SHORT_INODE = 0x1000000,
51 WHOLE_SECONDS = 0x2000000,
52 STICKY_TIMEOUTS = 0x4000000,
53 ADDR_LIMIT_3GB = 0x8000000,
54};
55
56
57
58
59
60
61
62enum {
63 PER_LINUX = 0x0000,
64 PER_LINUX_32BIT = 0x0000 | ADDR_LIMIT_32BIT,
65 PER_LINUX_FDPIC = 0x0000 | FDPIC_FUNCPTRS,
66 PER_SVR4 = 0x0001 | STICKY_TIMEOUTS | MMAP_PAGE_ZERO,
67 PER_SVR3 = 0x0002 | STICKY_TIMEOUTS | SHORT_INODE,
68 PER_SCOSVR3 = 0x0003 | STICKY_TIMEOUTS | WHOLE_SECONDS | SHORT_INODE,
69 PER_OSR5 = 0x0003 | STICKY_TIMEOUTS | WHOLE_SECONDS,
70 PER_WYSEV386 = 0x0004 | STICKY_TIMEOUTS | SHORT_INODE,
71 PER_ISCR4 = 0x0005 | STICKY_TIMEOUTS,
72 PER_BSD = 0x0006,
73 PER_SUNOS = 0x0006 | STICKY_TIMEOUTS,
74 PER_XENIX = 0x0007 | STICKY_TIMEOUTS | SHORT_INODE,
75 PER_LINUX32 = 0x0008,
76 PER_LINUX32_3GB = 0x0008 | ADDR_LIMIT_3GB,
77 PER_IRIX32 = 0x0009 | STICKY_TIMEOUTS,
78 PER_IRIXN32 = 0x000a | STICKY_TIMEOUTS,
79 PER_IRIX64 = 0x000b | STICKY_TIMEOUTS,
80 PER_RISCOS = 0x000c,
81 PER_SOLARIS = 0x000d | STICKY_TIMEOUTS,
82 PER_UW7 = 0x000e | STICKY_TIMEOUTS | MMAP_PAGE_ZERO,
83 PER_OSF4 = 0x000f,
84 PER_HPUX = 0x0010,
85 PER_MASK = 0x00ff,
86};
87
88
89
90
91#define personality(pers) (pers & PER_MASK)
92
93int info_is_fdpic(struct image_info *info)
94{
95 return info->personality == PER_LINUX_FDPIC;
96}
97
98
99#ifndef MAP_DENYWRITE
100#define MAP_DENYWRITE 0
101#endif
102
103
104#ifndef ELIBBAD
105#define ELIBBAD 80
106#endif
107
108#ifdef TARGET_WORDS_BIGENDIAN
109#define ELF_DATA ELFDATA2MSB
110#else
111#define ELF_DATA ELFDATA2LSB
112#endif
113
114#ifdef TARGET_ABI_MIPSN32
115typedef abi_ullong target_elf_greg_t;
116#define tswapreg(ptr) tswap64(ptr)
117#else
118typedef abi_ulong target_elf_greg_t;
119#define tswapreg(ptr) tswapal(ptr)
120#endif
121
122#ifdef USE_UID16
123typedef abi_ushort target_uid_t;
124typedef abi_ushort target_gid_t;
125#else
126typedef abi_uint target_uid_t;
127typedef abi_uint target_gid_t;
128#endif
129typedef abi_int target_pid_t;
130
131#ifdef TARGET_I386
132
133#define ELF_PLATFORM get_elf_platform()
134
135static const char *get_elf_platform(void)
136{
137 static char elf_platform[] = "i386";
138 int family = object_property_get_int(OBJECT(thread_cpu), "family", NULL);
139 if (family > 6)
140 family = 6;
141 if (family >= 3)
142 elf_platform[1] = '0' + family;
143 return elf_platform;
144}
145
146#define ELF_HWCAP get_elf_hwcap()
147
148static uint32_t get_elf_hwcap(void)
149{
150 X86CPU *cpu = X86_CPU(thread_cpu);
151
152 return cpu->env.features[FEAT_1_EDX];
153}
154
155#ifdef TARGET_X86_64
156#define ELF_START_MMAP 0x2aaaaab000ULL
157
158#define ELF_CLASS ELFCLASS64
159#define ELF_ARCH EM_X86_64
160
161static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
162{
163 regs->rax = 0;
164 regs->rsp = infop->start_stack;
165 regs->rip = infop->entry;
166}
167
168#define ELF_NREG 27
169typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
170
171
172
173
174
175
176
177
178static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUX86State *env)
179{
180 (*regs)[0] = tswapreg(env->regs[15]);
181 (*regs)[1] = tswapreg(env->regs[14]);
182 (*regs)[2] = tswapreg(env->regs[13]);
183 (*regs)[3] = tswapreg(env->regs[12]);
184 (*regs)[4] = tswapreg(env->regs[R_EBP]);
185 (*regs)[5] = tswapreg(env->regs[R_EBX]);
186 (*regs)[6] = tswapreg(env->regs[11]);
187 (*regs)[7] = tswapreg(env->regs[10]);
188 (*regs)[8] = tswapreg(env->regs[9]);
189 (*regs)[9] = tswapreg(env->regs[8]);
190 (*regs)[10] = tswapreg(env->regs[R_EAX]);
191 (*regs)[11] = tswapreg(env->regs[R_ECX]);
192 (*regs)[12] = tswapreg(env->regs[R_EDX]);
193 (*regs)[13] = tswapreg(env->regs[R_ESI]);
194 (*regs)[14] = tswapreg(env->regs[R_EDI]);
195 (*regs)[15] = tswapreg(env->regs[R_EAX]);
196 (*regs)[16] = tswapreg(env->eip);
197 (*regs)[17] = tswapreg(env->segs[R_CS].selector & 0xffff);
198 (*regs)[18] = tswapreg(env->eflags);
199 (*regs)[19] = tswapreg(env->regs[R_ESP]);
200 (*regs)[20] = tswapreg(env->segs[R_SS].selector & 0xffff);
201 (*regs)[21] = tswapreg(env->segs[R_FS].selector & 0xffff);
202 (*regs)[22] = tswapreg(env->segs[R_GS].selector & 0xffff);
203 (*regs)[23] = tswapreg(env->segs[R_DS].selector & 0xffff);
204 (*regs)[24] = tswapreg(env->segs[R_ES].selector & 0xffff);
205 (*regs)[25] = tswapreg(env->segs[R_FS].selector & 0xffff);
206 (*regs)[26] = tswapreg(env->segs[R_GS].selector & 0xffff);
207}
208
209#else
210
211#define ELF_START_MMAP 0x80000000
212
213
214
215
216#define elf_check_arch(x) ( ((x) == EM_386) || ((x) == EM_486) )
217
218
219
220
221#define ELF_CLASS ELFCLASS32
222#define ELF_ARCH EM_386
223
224static inline void init_thread(struct target_pt_regs *regs,
225 struct image_info *infop)
226{
227 regs->esp = infop->start_stack;
228 regs->eip = infop->entry;
229
230
231
232
233
234
235
236
237 regs->edx = 0;
238}
239
240#define ELF_NREG 17
241typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
242
243
244
245
246
247
248
249
250static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUX86State *env)
251{
252 (*regs)[0] = tswapreg(env->regs[R_EBX]);
253 (*regs)[1] = tswapreg(env->regs[R_ECX]);
254 (*regs)[2] = tswapreg(env->regs[R_EDX]);
255 (*regs)[3] = tswapreg(env->regs[R_ESI]);
256 (*regs)[4] = tswapreg(env->regs[R_EDI]);
257 (*regs)[5] = tswapreg(env->regs[R_EBP]);
258 (*regs)[6] = tswapreg(env->regs[R_EAX]);
259 (*regs)[7] = tswapreg(env->segs[R_DS].selector & 0xffff);
260 (*regs)[8] = tswapreg(env->segs[R_ES].selector & 0xffff);
261 (*regs)[9] = tswapreg(env->segs[R_FS].selector & 0xffff);
262 (*regs)[10] = tswapreg(env->segs[R_GS].selector & 0xffff);
263 (*regs)[11] = tswapreg(env->regs[R_EAX]);
264 (*regs)[12] = tswapreg(env->eip);
265 (*regs)[13] = tswapreg(env->segs[R_CS].selector & 0xffff);
266 (*regs)[14] = tswapreg(env->eflags);
267 (*regs)[15] = tswapreg(env->regs[R_ESP]);
268 (*regs)[16] = tswapreg(env->segs[R_SS].selector & 0xffff);
269}
270#endif
271
272#define USE_ELF_CORE_DUMP
273#define ELF_EXEC_PAGESIZE 4096
274
275#endif
276
277#ifdef TARGET_ARM
278
279#ifndef TARGET_AARCH64
280
281
282#define ELF_START_MMAP 0x80000000
283
284#define ELF_ARCH EM_ARM
285#define ELF_CLASS ELFCLASS32
286
287static inline void init_thread(struct target_pt_regs *regs,
288 struct image_info *infop)
289{
290 abi_long stack = infop->start_stack;
291 memset(regs, 0, sizeof(*regs));
292
293 regs->uregs[16] = ARM_CPU_MODE_USR;
294 if (infop->entry & 1) {
295 regs->uregs[16] |= CPSR_T;
296 }
297 regs->uregs[15] = infop->entry & 0xfffffffe;
298 regs->uregs[13] = infop->start_stack;
299
300 get_user_ual(regs->uregs[2], stack + 8);
301 get_user_ual(regs->uregs[1], stack + 4);
302
303 regs->uregs[0] = 0;
304
305
306 regs->uregs[10] = infop->start_data;
307
308
309 if (info_is_fdpic(infop)) {
310
311
312
313
314
315
316 regs->uregs[7] = infop->loadmap_addr;
317 if (infop->interpreter_loadmap_addr) {
318
319 regs->uregs[8] = infop->interpreter_loadmap_addr;
320 regs->uregs[9] = infop->interpreter_pt_dynamic_addr;
321 } else {
322 regs->uregs[8] = 0;
323 regs->uregs[9] = infop->pt_dynamic_addr;
324 }
325 }
326}
327
328#define ELF_NREG 18
329typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
330
331static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUARMState *env)
332{
333 (*regs)[0] = tswapreg(env->regs[0]);
334 (*regs)[1] = tswapreg(env->regs[1]);
335 (*regs)[2] = tswapreg(env->regs[2]);
336 (*regs)[3] = tswapreg(env->regs[3]);
337 (*regs)[4] = tswapreg(env->regs[4]);
338 (*regs)[5] = tswapreg(env->regs[5]);
339 (*regs)[6] = tswapreg(env->regs[6]);
340 (*regs)[7] = tswapreg(env->regs[7]);
341 (*regs)[8] = tswapreg(env->regs[8]);
342 (*regs)[9] = tswapreg(env->regs[9]);
343 (*regs)[10] = tswapreg(env->regs[10]);
344 (*regs)[11] = tswapreg(env->regs[11]);
345 (*regs)[12] = tswapreg(env->regs[12]);
346 (*regs)[13] = tswapreg(env->regs[13]);
347 (*regs)[14] = tswapreg(env->regs[14]);
348 (*regs)[15] = tswapreg(env->regs[15]);
349
350 (*regs)[16] = tswapreg(cpsr_read((CPUARMState *)env));
351 (*regs)[17] = tswapreg(env->regs[0]);
352}
353
354#define USE_ELF_CORE_DUMP
355#define ELF_EXEC_PAGESIZE 4096
356
357enum
358{
359 ARM_HWCAP_ARM_SWP = 1 << 0,
360 ARM_HWCAP_ARM_HALF = 1 << 1,
361 ARM_HWCAP_ARM_THUMB = 1 << 2,
362 ARM_HWCAP_ARM_26BIT = 1 << 3,
363 ARM_HWCAP_ARM_FAST_MULT = 1 << 4,
364 ARM_HWCAP_ARM_FPA = 1 << 5,
365 ARM_HWCAP_ARM_VFP = 1 << 6,
366 ARM_HWCAP_ARM_EDSP = 1 << 7,
367 ARM_HWCAP_ARM_JAVA = 1 << 8,
368 ARM_HWCAP_ARM_IWMMXT = 1 << 9,
369 ARM_HWCAP_ARM_CRUNCH = 1 << 10,
370 ARM_HWCAP_ARM_THUMBEE = 1 << 11,
371 ARM_HWCAP_ARM_NEON = 1 << 12,
372 ARM_HWCAP_ARM_VFPv3 = 1 << 13,
373 ARM_HWCAP_ARM_VFPv3D16 = 1 << 14,
374 ARM_HWCAP_ARM_TLS = 1 << 15,
375 ARM_HWCAP_ARM_VFPv4 = 1 << 16,
376 ARM_HWCAP_ARM_IDIVA = 1 << 17,
377 ARM_HWCAP_ARM_IDIVT = 1 << 18,
378 ARM_HWCAP_ARM_VFPD32 = 1 << 19,
379 ARM_HWCAP_ARM_LPAE = 1 << 20,
380 ARM_HWCAP_ARM_EVTSTRM = 1 << 21,
381};
382
383enum {
384 ARM_HWCAP2_ARM_AES = 1 << 0,
385 ARM_HWCAP2_ARM_PMULL = 1 << 1,
386 ARM_HWCAP2_ARM_SHA1 = 1 << 2,
387 ARM_HWCAP2_ARM_SHA2 = 1 << 3,
388 ARM_HWCAP2_ARM_CRC32 = 1 << 4,
389};
390
391
392
393#define ARM_COMMPAGE (intptr_t)0xffff0f00u
394
395static bool init_guest_commpage(void)
396{
397 void *want = g2h_untagged(ARM_COMMPAGE & -qemu_host_page_size);
398 void *addr = mmap(want, qemu_host_page_size, PROT_READ | PROT_WRITE,
399 MAP_ANONYMOUS | MAP_PRIVATE | MAP_FIXED, -1, 0);
400
401 if (addr == MAP_FAILED) {
402 perror("Allocating guest commpage");
403 exit(EXIT_FAILURE);
404 }
405 if (addr != want) {
406 return false;
407 }
408
409
410 __put_user(5, (uint32_t *)g2h_untagged(0xffff0ffcu));
411
412 if (mprotect(addr, qemu_host_page_size, PROT_READ)) {
413 perror("Protecting guest commpage");
414 exit(EXIT_FAILURE);
415 }
416 return true;
417}
418
419#define ELF_HWCAP get_elf_hwcap()
420#define ELF_HWCAP2 get_elf_hwcap2()
421
422static uint32_t get_elf_hwcap(void)
423{
424 ARMCPU *cpu = ARM_CPU(thread_cpu);
425 uint32_t hwcaps = 0;
426
427 hwcaps |= ARM_HWCAP_ARM_SWP;
428 hwcaps |= ARM_HWCAP_ARM_HALF;
429 hwcaps |= ARM_HWCAP_ARM_THUMB;
430 hwcaps |= ARM_HWCAP_ARM_FAST_MULT;
431
432
433#define GET_FEATURE(feat, hwcap) \
434 do { if (arm_feature(&cpu->env, feat)) { hwcaps |= hwcap; } } while (0)
435
436#define GET_FEATURE_ID(feat, hwcap) \
437 do { if (cpu_isar_feature(feat, cpu)) { hwcaps |= hwcap; } } while (0)
438
439
440 GET_FEATURE(ARM_FEATURE_V5, ARM_HWCAP_ARM_EDSP);
441 GET_FEATURE(ARM_FEATURE_IWMMXT, ARM_HWCAP_ARM_IWMMXT);
442 GET_FEATURE(ARM_FEATURE_THUMB2EE, ARM_HWCAP_ARM_THUMBEE);
443 GET_FEATURE(ARM_FEATURE_NEON, ARM_HWCAP_ARM_NEON);
444 GET_FEATURE(ARM_FEATURE_V6K, ARM_HWCAP_ARM_TLS);
445 GET_FEATURE(ARM_FEATURE_LPAE, ARM_HWCAP_ARM_LPAE);
446 GET_FEATURE_ID(aa32_arm_div, ARM_HWCAP_ARM_IDIVA);
447 GET_FEATURE_ID(aa32_thumb_div, ARM_HWCAP_ARM_IDIVT);
448 GET_FEATURE_ID(aa32_vfp, ARM_HWCAP_ARM_VFP);
449
450 if (cpu_isar_feature(aa32_fpsp_v3, cpu) ||
451 cpu_isar_feature(aa32_fpdp_v3, cpu)) {
452 hwcaps |= ARM_HWCAP_ARM_VFPv3;
453 if (cpu_isar_feature(aa32_simd_r32, cpu)) {
454 hwcaps |= ARM_HWCAP_ARM_VFPD32;
455 } else {
456 hwcaps |= ARM_HWCAP_ARM_VFPv3D16;
457 }
458 }
459 GET_FEATURE_ID(aa32_simdfmac, ARM_HWCAP_ARM_VFPv4);
460
461 return hwcaps;
462}
463
464static uint32_t get_elf_hwcap2(void)
465{
466 ARMCPU *cpu = ARM_CPU(thread_cpu);
467 uint32_t hwcaps = 0;
468
469 GET_FEATURE_ID(aa32_aes, ARM_HWCAP2_ARM_AES);
470 GET_FEATURE_ID(aa32_pmull, ARM_HWCAP2_ARM_PMULL);
471 GET_FEATURE_ID(aa32_sha1, ARM_HWCAP2_ARM_SHA1);
472 GET_FEATURE_ID(aa32_sha2, ARM_HWCAP2_ARM_SHA2);
473 GET_FEATURE_ID(aa32_crc32, ARM_HWCAP2_ARM_CRC32);
474 return hwcaps;
475}
476
477#undef GET_FEATURE
478#undef GET_FEATURE_ID
479
480#define ELF_PLATFORM get_elf_platform()
481
482static const char *get_elf_platform(void)
483{
484 CPUARMState *env = thread_cpu->env_ptr;
485
486#ifdef TARGET_WORDS_BIGENDIAN
487# define END "b"
488#else
489# define END "l"
490#endif
491
492 if (arm_feature(env, ARM_FEATURE_V8)) {
493 return "v8" END;
494 } else if (arm_feature(env, ARM_FEATURE_V7)) {
495 if (arm_feature(env, ARM_FEATURE_M)) {
496 return "v7m" END;
497 } else {
498 return "v7" END;
499 }
500 } else if (arm_feature(env, ARM_FEATURE_V6)) {
501 return "v6" END;
502 } else if (arm_feature(env, ARM_FEATURE_V5)) {
503 return "v5" END;
504 } else {
505 return "v4" END;
506 }
507
508#undef END
509}
510
511#else
512
513#define ELF_START_MMAP 0x80000000
514
515#define ELF_ARCH EM_AARCH64
516#define ELF_CLASS ELFCLASS64
517#ifdef TARGET_WORDS_BIGENDIAN
518# define ELF_PLATFORM "aarch64_be"
519#else
520# define ELF_PLATFORM "aarch64"
521#endif
522
523static inline void init_thread(struct target_pt_regs *regs,
524 struct image_info *infop)
525{
526 abi_long stack = infop->start_stack;
527 memset(regs, 0, sizeof(*regs));
528
529 regs->pc = infop->entry & ~0x3ULL;
530 regs->sp = stack;
531}
532
533#define ELF_NREG 34
534typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
535
536static void elf_core_copy_regs(target_elf_gregset_t *regs,
537 const CPUARMState *env)
538{
539 int i;
540
541 for (i = 0; i < 32; i++) {
542 (*regs)[i] = tswapreg(env->xregs[i]);
543 }
544 (*regs)[32] = tswapreg(env->pc);
545 (*regs)[33] = tswapreg(pstate_read((CPUARMState *)env));
546}
547
548#define USE_ELF_CORE_DUMP
549#define ELF_EXEC_PAGESIZE 4096
550
551enum {
552 ARM_HWCAP_A64_FP = 1 << 0,
553 ARM_HWCAP_A64_ASIMD = 1 << 1,
554 ARM_HWCAP_A64_EVTSTRM = 1 << 2,
555 ARM_HWCAP_A64_AES = 1 << 3,
556 ARM_HWCAP_A64_PMULL = 1 << 4,
557 ARM_HWCAP_A64_SHA1 = 1 << 5,
558 ARM_HWCAP_A64_SHA2 = 1 << 6,
559 ARM_HWCAP_A64_CRC32 = 1 << 7,
560 ARM_HWCAP_A64_ATOMICS = 1 << 8,
561 ARM_HWCAP_A64_FPHP = 1 << 9,
562 ARM_HWCAP_A64_ASIMDHP = 1 << 10,
563 ARM_HWCAP_A64_CPUID = 1 << 11,
564 ARM_HWCAP_A64_ASIMDRDM = 1 << 12,
565 ARM_HWCAP_A64_JSCVT = 1 << 13,
566 ARM_HWCAP_A64_FCMA = 1 << 14,
567 ARM_HWCAP_A64_LRCPC = 1 << 15,
568 ARM_HWCAP_A64_DCPOP = 1 << 16,
569 ARM_HWCAP_A64_SHA3 = 1 << 17,
570 ARM_HWCAP_A64_SM3 = 1 << 18,
571 ARM_HWCAP_A64_SM4 = 1 << 19,
572 ARM_HWCAP_A64_ASIMDDP = 1 << 20,
573 ARM_HWCAP_A64_SHA512 = 1 << 21,
574 ARM_HWCAP_A64_SVE = 1 << 22,
575 ARM_HWCAP_A64_ASIMDFHM = 1 << 23,
576 ARM_HWCAP_A64_DIT = 1 << 24,
577 ARM_HWCAP_A64_USCAT = 1 << 25,
578 ARM_HWCAP_A64_ILRCPC = 1 << 26,
579 ARM_HWCAP_A64_FLAGM = 1 << 27,
580 ARM_HWCAP_A64_SSBS = 1 << 28,
581 ARM_HWCAP_A64_SB = 1 << 29,
582 ARM_HWCAP_A64_PACA = 1 << 30,
583 ARM_HWCAP_A64_PACG = 1UL << 31,
584
585 ARM_HWCAP2_A64_DCPODP = 1 << 0,
586 ARM_HWCAP2_A64_SVE2 = 1 << 1,
587 ARM_HWCAP2_A64_SVEAES = 1 << 2,
588 ARM_HWCAP2_A64_SVEPMULL = 1 << 3,
589 ARM_HWCAP2_A64_SVEBITPERM = 1 << 4,
590 ARM_HWCAP2_A64_SVESHA3 = 1 << 5,
591 ARM_HWCAP2_A64_SVESM4 = 1 << 6,
592 ARM_HWCAP2_A64_FLAGM2 = 1 << 7,
593 ARM_HWCAP2_A64_FRINT = 1 << 8,
594 ARM_HWCAP2_A64_SVEI8MM = 1 << 9,
595 ARM_HWCAP2_A64_SVEF32MM = 1 << 10,
596 ARM_HWCAP2_A64_SVEF64MM = 1 << 11,
597 ARM_HWCAP2_A64_SVEBF16 = 1 << 12,
598 ARM_HWCAP2_A64_I8MM = 1 << 13,
599 ARM_HWCAP2_A64_BF16 = 1 << 14,
600 ARM_HWCAP2_A64_DGH = 1 << 15,
601 ARM_HWCAP2_A64_RNG = 1 << 16,
602 ARM_HWCAP2_A64_BTI = 1 << 17,
603 ARM_HWCAP2_A64_MTE = 1 << 18,
604};
605
606#define ELF_HWCAP get_elf_hwcap()
607#define ELF_HWCAP2 get_elf_hwcap2()
608
609#define GET_FEATURE_ID(feat, hwcap) \
610 do { if (cpu_isar_feature(feat, cpu)) { hwcaps |= hwcap; } } while (0)
611
612static uint32_t get_elf_hwcap(void)
613{
614 ARMCPU *cpu = ARM_CPU(thread_cpu);
615 uint32_t hwcaps = 0;
616
617 hwcaps |= ARM_HWCAP_A64_FP;
618 hwcaps |= ARM_HWCAP_A64_ASIMD;
619 hwcaps |= ARM_HWCAP_A64_CPUID;
620
621
622
623 GET_FEATURE_ID(aa64_aes, ARM_HWCAP_A64_AES);
624 GET_FEATURE_ID(aa64_pmull, ARM_HWCAP_A64_PMULL);
625 GET_FEATURE_ID(aa64_sha1, ARM_HWCAP_A64_SHA1);
626 GET_FEATURE_ID(aa64_sha256, ARM_HWCAP_A64_SHA2);
627 GET_FEATURE_ID(aa64_sha512, ARM_HWCAP_A64_SHA512);
628 GET_FEATURE_ID(aa64_crc32, ARM_HWCAP_A64_CRC32);
629 GET_FEATURE_ID(aa64_sha3, ARM_HWCAP_A64_SHA3);
630 GET_FEATURE_ID(aa64_sm3, ARM_HWCAP_A64_SM3);
631 GET_FEATURE_ID(aa64_sm4, ARM_HWCAP_A64_SM4);
632 GET_FEATURE_ID(aa64_fp16, ARM_HWCAP_A64_FPHP | ARM_HWCAP_A64_ASIMDHP);
633 GET_FEATURE_ID(aa64_atomics, ARM_HWCAP_A64_ATOMICS);
634 GET_FEATURE_ID(aa64_rdm, ARM_HWCAP_A64_ASIMDRDM);
635 GET_FEATURE_ID(aa64_dp, ARM_HWCAP_A64_ASIMDDP);
636 GET_FEATURE_ID(aa64_fcma, ARM_HWCAP_A64_FCMA);
637 GET_FEATURE_ID(aa64_sve, ARM_HWCAP_A64_SVE);
638 GET_FEATURE_ID(aa64_pauth, ARM_HWCAP_A64_PACA | ARM_HWCAP_A64_PACG);
639 GET_FEATURE_ID(aa64_fhm, ARM_HWCAP_A64_ASIMDFHM);
640 GET_FEATURE_ID(aa64_jscvt, ARM_HWCAP_A64_JSCVT);
641 GET_FEATURE_ID(aa64_sb, ARM_HWCAP_A64_SB);
642 GET_FEATURE_ID(aa64_condm_4, ARM_HWCAP_A64_FLAGM);
643 GET_FEATURE_ID(aa64_dcpop, ARM_HWCAP_A64_DCPOP);
644 GET_FEATURE_ID(aa64_rcpc_8_3, ARM_HWCAP_A64_LRCPC);
645 GET_FEATURE_ID(aa64_rcpc_8_4, ARM_HWCAP_A64_ILRCPC);
646
647 return hwcaps;
648}
649
650static uint32_t get_elf_hwcap2(void)
651{
652 ARMCPU *cpu = ARM_CPU(thread_cpu);
653 uint32_t hwcaps = 0;
654
655 GET_FEATURE_ID(aa64_dcpodp, ARM_HWCAP2_A64_DCPODP);
656 GET_FEATURE_ID(aa64_sve2, ARM_HWCAP2_A64_SVE2);
657 GET_FEATURE_ID(aa64_sve2_aes, ARM_HWCAP2_A64_SVEAES);
658 GET_FEATURE_ID(aa64_sve2_pmull128, ARM_HWCAP2_A64_SVEPMULL);
659 GET_FEATURE_ID(aa64_sve2_bitperm, ARM_HWCAP2_A64_SVEBITPERM);
660 GET_FEATURE_ID(aa64_sve2_sha3, ARM_HWCAP2_A64_SVESHA3);
661 GET_FEATURE_ID(aa64_sve2_sm4, ARM_HWCAP2_A64_SVESM4);
662 GET_FEATURE_ID(aa64_condm_5, ARM_HWCAP2_A64_FLAGM2);
663 GET_FEATURE_ID(aa64_frint, ARM_HWCAP2_A64_FRINT);
664 GET_FEATURE_ID(aa64_sve_i8mm, ARM_HWCAP2_A64_SVEI8MM);
665 GET_FEATURE_ID(aa64_sve_f32mm, ARM_HWCAP2_A64_SVEF32MM);
666 GET_FEATURE_ID(aa64_sve_f64mm, ARM_HWCAP2_A64_SVEF64MM);
667 GET_FEATURE_ID(aa64_sve_bf16, ARM_HWCAP2_A64_SVEBF16);
668 GET_FEATURE_ID(aa64_i8mm, ARM_HWCAP2_A64_I8MM);
669 GET_FEATURE_ID(aa64_bf16, ARM_HWCAP2_A64_BF16);
670 GET_FEATURE_ID(aa64_rndr, ARM_HWCAP2_A64_RNG);
671 GET_FEATURE_ID(aa64_bti, ARM_HWCAP2_A64_BTI);
672 GET_FEATURE_ID(aa64_mte, ARM_HWCAP2_A64_MTE);
673
674 return hwcaps;
675}
676
677#undef GET_FEATURE_ID
678
679#endif
680#endif
681
682#ifdef TARGET_SPARC
683#ifdef TARGET_SPARC64
684
685#define ELF_START_MMAP 0x80000000
686#define ELF_HWCAP (HWCAP_SPARC_FLUSH | HWCAP_SPARC_STBAR | HWCAP_SPARC_SWAP \
687 | HWCAP_SPARC_MULDIV | HWCAP_SPARC_V9)
688#ifndef TARGET_ABI32
689#define elf_check_arch(x) ( (x) == EM_SPARCV9 || (x) == EM_SPARC32PLUS )
690#else
691#define elf_check_arch(x) ( (x) == EM_SPARC32PLUS || (x) == EM_SPARC )
692#endif
693
694#define ELF_CLASS ELFCLASS64
695#define ELF_ARCH EM_SPARCV9
696#else
697#define ELF_START_MMAP 0x80000000
698#define ELF_HWCAP (HWCAP_SPARC_FLUSH | HWCAP_SPARC_STBAR | HWCAP_SPARC_SWAP \
699 | HWCAP_SPARC_MULDIV)
700#define ELF_CLASS ELFCLASS32
701#define ELF_ARCH EM_SPARC
702#endif
703
704static inline void init_thread(struct target_pt_regs *regs,
705 struct image_info *infop)
706{
707
708 regs->pc = infop->entry;
709 regs->npc = regs->pc + 4;
710 regs->y = 0;
711 regs->u_regs[14] = (infop->start_stack - 16 * sizeof(abi_ulong)
712 - TARGET_STACK_BIAS);
713}
714#endif
715
716#ifdef TARGET_PPC
717
718#define ELF_MACHINE PPC_ELF_MACHINE
719#define ELF_START_MMAP 0x80000000
720
721#if defined(TARGET_PPC64) && !defined(TARGET_ABI32)
722
723#define elf_check_arch(x) ( (x) == EM_PPC64 )
724
725#define ELF_CLASS ELFCLASS64
726
727#else
728
729#define ELF_CLASS ELFCLASS32
730
731#endif
732
733#define ELF_ARCH EM_PPC
734
735
736
737enum {
738 QEMU_PPC_FEATURE_32 = 0x80000000,
739 QEMU_PPC_FEATURE_64 = 0x40000000,
740 QEMU_PPC_FEATURE_601_INSTR = 0x20000000,
741 QEMU_PPC_FEATURE_HAS_ALTIVEC = 0x10000000,
742 QEMU_PPC_FEATURE_HAS_FPU = 0x08000000,
743 QEMU_PPC_FEATURE_HAS_MMU = 0x04000000,
744 QEMU_PPC_FEATURE_HAS_4xxMAC = 0x02000000,
745 QEMU_PPC_FEATURE_UNIFIED_CACHE = 0x01000000,
746 QEMU_PPC_FEATURE_HAS_SPE = 0x00800000,
747 QEMU_PPC_FEATURE_HAS_EFP_SINGLE = 0x00400000,
748 QEMU_PPC_FEATURE_HAS_EFP_DOUBLE = 0x00200000,
749 QEMU_PPC_FEATURE_NO_TB = 0x00100000,
750 QEMU_PPC_FEATURE_POWER4 = 0x00080000,
751 QEMU_PPC_FEATURE_POWER5 = 0x00040000,
752 QEMU_PPC_FEATURE_POWER5_PLUS = 0x00020000,
753 QEMU_PPC_FEATURE_CELL = 0x00010000,
754 QEMU_PPC_FEATURE_BOOKE = 0x00008000,
755 QEMU_PPC_FEATURE_SMT = 0x00004000,
756 QEMU_PPC_FEATURE_ICACHE_SNOOP = 0x00002000,
757 QEMU_PPC_FEATURE_ARCH_2_05 = 0x00001000,
758 QEMU_PPC_FEATURE_PA6T = 0x00000800,
759 QEMU_PPC_FEATURE_HAS_DFP = 0x00000400,
760 QEMU_PPC_FEATURE_POWER6_EXT = 0x00000200,
761 QEMU_PPC_FEATURE_ARCH_2_06 = 0x00000100,
762 QEMU_PPC_FEATURE_HAS_VSX = 0x00000080,
763 QEMU_PPC_FEATURE_PSERIES_PERFMON_COMPAT = 0x00000040,
764
765 QEMU_PPC_FEATURE_TRUE_LE = 0x00000002,
766 QEMU_PPC_FEATURE_PPC_LE = 0x00000001,
767
768
769 QEMU_PPC_FEATURE2_ARCH_2_07 = 0x80000000,
770 QEMU_PPC_FEATURE2_HAS_HTM = 0x40000000,
771 QEMU_PPC_FEATURE2_HAS_DSCR = 0x20000000,
772 QEMU_PPC_FEATURE2_HAS_EBB = 0x10000000,
773 QEMU_PPC_FEATURE2_HAS_ISEL = 0x08000000,
774 QEMU_PPC_FEATURE2_HAS_TAR = 0x04000000,
775 QEMU_PPC_FEATURE2_VEC_CRYPTO = 0x02000000,
776 QEMU_PPC_FEATURE2_HTM_NOSC = 0x01000000,
777 QEMU_PPC_FEATURE2_ARCH_3_00 = 0x00800000,
778 QEMU_PPC_FEATURE2_HAS_IEEE128 = 0x00400000,
779 QEMU_PPC_FEATURE2_DARN = 0x00200000,
780 QEMU_PPC_FEATURE2_SCV = 0x00100000,
781 QEMU_PPC_FEATURE2_HTM_NO_SUSPEND = 0x00080000,
782};
783
784#define ELF_HWCAP get_elf_hwcap()
785
786static uint32_t get_elf_hwcap(void)
787{
788 PowerPCCPU *cpu = POWERPC_CPU(thread_cpu);
789 uint32_t features = 0;
790
791
792
793#define GET_FEATURE(flag, feature) \
794 do { if (cpu->env.insns_flags & flag) { features |= feature; } } while (0)
795#define GET_FEATURE2(flags, feature) \
796 do { \
797 if ((cpu->env.insns_flags2 & flags) == flags) { \
798 features |= feature; \
799 } \
800 } while (0)
801 GET_FEATURE(PPC_64B, QEMU_PPC_FEATURE_64);
802 GET_FEATURE(PPC_FLOAT, QEMU_PPC_FEATURE_HAS_FPU);
803 GET_FEATURE(PPC_ALTIVEC, QEMU_PPC_FEATURE_HAS_ALTIVEC);
804 GET_FEATURE(PPC_SPE, QEMU_PPC_FEATURE_HAS_SPE);
805 GET_FEATURE(PPC_SPE_SINGLE, QEMU_PPC_FEATURE_HAS_EFP_SINGLE);
806 GET_FEATURE(PPC_SPE_DOUBLE, QEMU_PPC_FEATURE_HAS_EFP_DOUBLE);
807 GET_FEATURE(PPC_BOOKE, QEMU_PPC_FEATURE_BOOKE);
808 GET_FEATURE(PPC_405_MAC, QEMU_PPC_FEATURE_HAS_4xxMAC);
809 GET_FEATURE2(PPC2_DFP, QEMU_PPC_FEATURE_HAS_DFP);
810 GET_FEATURE2(PPC2_VSX, QEMU_PPC_FEATURE_HAS_VSX);
811 GET_FEATURE2((PPC2_PERM_ISA206 | PPC2_DIVE_ISA206 | PPC2_ATOMIC_ISA206 |
812 PPC2_FP_CVT_ISA206 | PPC2_FP_TST_ISA206),
813 QEMU_PPC_FEATURE_ARCH_2_06);
814#undef GET_FEATURE
815#undef GET_FEATURE2
816
817 return features;
818}
819
820#define ELF_HWCAP2 get_elf_hwcap2()
821
822static uint32_t get_elf_hwcap2(void)
823{
824 PowerPCCPU *cpu = POWERPC_CPU(thread_cpu);
825 uint32_t features = 0;
826
827#define GET_FEATURE(flag, feature) \
828 do { if (cpu->env.insns_flags & flag) { features |= feature; } } while (0)
829#define GET_FEATURE2(flag, feature) \
830 do { if (cpu->env.insns_flags2 & flag) { features |= feature; } } while (0)
831
832 GET_FEATURE(PPC_ISEL, QEMU_PPC_FEATURE2_HAS_ISEL);
833 GET_FEATURE2(PPC2_BCTAR_ISA207, QEMU_PPC_FEATURE2_HAS_TAR);
834 GET_FEATURE2((PPC2_BCTAR_ISA207 | PPC2_LSQ_ISA207 | PPC2_ALTIVEC_207 |
835 PPC2_ISA207S), QEMU_PPC_FEATURE2_ARCH_2_07 |
836 QEMU_PPC_FEATURE2_VEC_CRYPTO);
837 GET_FEATURE2(PPC2_ISA300, QEMU_PPC_FEATURE2_ARCH_3_00 |
838 QEMU_PPC_FEATURE2_DARN | QEMU_PPC_FEATURE2_HAS_IEEE128);
839
840#undef GET_FEATURE
841#undef GET_FEATURE2
842
843 return features;
844}
845
846
847
848
849
850
851
852
853
854
855#define DLINFO_ARCH_ITEMS 5
856#define ARCH_DLINFO \
857 do { \
858 PowerPCCPU *cpu = POWERPC_CPU(thread_cpu); \
859
860
861
862 \
863 NEW_AUX_ENT(AT_IGNOREPPC, AT_IGNOREPPC); \
864 NEW_AUX_ENT(AT_IGNOREPPC, AT_IGNOREPPC); \
865 NEW_AUX_ENT(AT_DCACHEBSIZE, cpu->env.dcache_line_size); \
866 NEW_AUX_ENT(AT_ICACHEBSIZE, cpu->env.icache_line_size); \
867 NEW_AUX_ENT(AT_UCACHEBSIZE, 0); \
868 } while (0)
869
870static inline void init_thread(struct target_pt_regs *_regs, struct image_info *infop)
871{
872 _regs->gpr[1] = infop->start_stack;
873#if defined(TARGET_PPC64) && !defined(TARGET_ABI32)
874 if (get_ppc64_abi(infop) < 2) {
875 uint64_t val;
876 get_user_u64(val, infop->entry + 8);
877 _regs->gpr[2] = val + infop->load_bias;
878 get_user_u64(val, infop->entry);
879 infop->entry = val + infop->load_bias;
880 } else {
881 _regs->gpr[12] = infop->entry;
882 }
883#endif
884 _regs->nip = infop->entry;
885}
886
887
888#define ELF_NREG 48
889typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
890
891static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUPPCState *env)
892{
893 int i;
894 target_ulong ccr = 0;
895
896 for (i = 0; i < ARRAY_SIZE(env->gpr); i++) {
897 (*regs)[i] = tswapreg(env->gpr[i]);
898 }
899
900 (*regs)[32] = tswapreg(env->nip);
901 (*regs)[33] = tswapreg(env->msr);
902 (*regs)[35] = tswapreg(env->ctr);
903 (*regs)[36] = tswapreg(env->lr);
904 (*regs)[37] = tswapreg(cpu_read_xer(env));
905
906 for (i = 0; i < ARRAY_SIZE(env->crf); i++) {
907 ccr |= env->crf[i] << (32 - ((i + 1) * 4));
908 }
909 (*regs)[38] = tswapreg(ccr);
910}
911
912#define USE_ELF_CORE_DUMP
913#define ELF_EXEC_PAGESIZE 4096
914
915#endif
916
917#ifdef TARGET_MIPS
918
919#define ELF_START_MMAP 0x80000000
920
921#ifdef TARGET_MIPS64
922#define ELF_CLASS ELFCLASS64
923#else
924#define ELF_CLASS ELFCLASS32
925#endif
926#define ELF_ARCH EM_MIPS
927
928#ifdef TARGET_ABI_MIPSN32
929#define elf_check_abi(x) ((x) & EF_MIPS_ABI2)
930#else
931#define elf_check_abi(x) (!((x) & EF_MIPS_ABI2))
932#endif
933
934static inline void init_thread(struct target_pt_regs *regs,
935 struct image_info *infop)
936{
937 regs->cp0_status = 2 << CP0St_KSU;
938 regs->cp0_epc = infop->entry;
939 regs->regs[29] = infop->start_stack;
940}
941
942
943#define ELF_NREG 45
944typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
945
946
947enum {
948#ifdef TARGET_MIPS64
949 TARGET_EF_R0 = 0,
950#else
951 TARGET_EF_R0 = 6,
952#endif
953 TARGET_EF_R26 = TARGET_EF_R0 + 26,
954 TARGET_EF_R27 = TARGET_EF_R0 + 27,
955 TARGET_EF_LO = TARGET_EF_R0 + 32,
956 TARGET_EF_HI = TARGET_EF_R0 + 33,
957 TARGET_EF_CP0_EPC = TARGET_EF_R0 + 34,
958 TARGET_EF_CP0_BADVADDR = TARGET_EF_R0 + 35,
959 TARGET_EF_CP0_STATUS = TARGET_EF_R0 + 36,
960 TARGET_EF_CP0_CAUSE = TARGET_EF_R0 + 37
961};
962
963
964static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUMIPSState *env)
965{
966 int i;
967
968 for (i = 0; i < TARGET_EF_R0; i++) {
969 (*regs)[i] = 0;
970 }
971 (*regs)[TARGET_EF_R0] = 0;
972
973 for (i = 1; i < ARRAY_SIZE(env->active_tc.gpr); i++) {
974 (*regs)[TARGET_EF_R0 + i] = tswapreg(env->active_tc.gpr[i]);
975 }
976
977 (*regs)[TARGET_EF_R26] = 0;
978 (*regs)[TARGET_EF_R27] = 0;
979 (*regs)[TARGET_EF_LO] = tswapreg(env->active_tc.LO[0]);
980 (*regs)[TARGET_EF_HI] = tswapreg(env->active_tc.HI[0]);
981 (*regs)[TARGET_EF_CP0_EPC] = tswapreg(env->active_tc.PC);
982 (*regs)[TARGET_EF_CP0_BADVADDR] = tswapreg(env->CP0_BadVAddr);
983 (*regs)[TARGET_EF_CP0_STATUS] = tswapreg(env->CP0_Status);
984 (*regs)[TARGET_EF_CP0_CAUSE] = tswapreg(env->CP0_Cause);
985}
986
987#define USE_ELF_CORE_DUMP
988#define ELF_EXEC_PAGESIZE 4096
989
990
991enum {
992 HWCAP_MIPS_R6 = (1 << 0),
993 HWCAP_MIPS_MSA = (1 << 1),
994 HWCAP_MIPS_CRC32 = (1 << 2),
995 HWCAP_MIPS_MIPS16 = (1 << 3),
996 HWCAP_MIPS_MDMX = (1 << 4),
997 HWCAP_MIPS_MIPS3D = (1 << 5),
998 HWCAP_MIPS_SMARTMIPS = (1 << 6),
999 HWCAP_MIPS_DSP = (1 << 7),
1000 HWCAP_MIPS_DSP2 = (1 << 8),
1001 HWCAP_MIPS_DSP3 = (1 << 9),
1002 HWCAP_MIPS_MIPS16E2 = (1 << 10),
1003 HWCAP_LOONGSON_MMI = (1 << 11),
1004 HWCAP_LOONGSON_EXT = (1 << 12),
1005 HWCAP_LOONGSON_EXT2 = (1 << 13),
1006 HWCAP_LOONGSON_CPUCFG = (1 << 14),
1007};
1008
1009#define ELF_HWCAP get_elf_hwcap()
1010
1011#define GET_FEATURE_INSN(_flag, _hwcap) \
1012 do { if (cpu->env.insn_flags & (_flag)) { hwcaps |= _hwcap; } } while (0)
1013
1014#define GET_FEATURE_REG_SET(_reg, _mask, _hwcap) \
1015 do { if (cpu->env._reg & (_mask)) { hwcaps |= _hwcap; } } while (0)
1016
1017#define GET_FEATURE_REG_EQU(_reg, _start, _length, _val, _hwcap) \
1018 do { \
1019 if (extract32(cpu->env._reg, (_start), (_length)) == (_val)) { \
1020 hwcaps |= _hwcap; \
1021 } \
1022 } while (0)
1023
1024static uint32_t get_elf_hwcap(void)
1025{
1026 MIPSCPU *cpu = MIPS_CPU(thread_cpu);
1027 uint32_t hwcaps = 0;
1028
1029 GET_FEATURE_REG_EQU(CP0_Config0, CP0C0_AR, CP0C0_AR_LENGTH,
1030 2, HWCAP_MIPS_R6);
1031 GET_FEATURE_REG_SET(CP0_Config3, 1 << CP0C3_MSAP, HWCAP_MIPS_MSA);
1032 GET_FEATURE_INSN(ASE_LMMI, HWCAP_LOONGSON_MMI);
1033 GET_FEATURE_INSN(ASE_LEXT, HWCAP_LOONGSON_EXT);
1034
1035 return hwcaps;
1036}
1037
1038#undef GET_FEATURE_REG_EQU
1039#undef GET_FEATURE_REG_SET
1040#undef GET_FEATURE_INSN
1041
1042#endif
1043
1044#ifdef TARGET_MICROBLAZE
1045
1046#define ELF_START_MMAP 0x80000000
1047
1048#define elf_check_arch(x) ( (x) == EM_MICROBLAZE || (x) == EM_MICROBLAZE_OLD)
1049
1050#define ELF_CLASS ELFCLASS32
1051#define ELF_ARCH EM_MICROBLAZE
1052
1053static inline void init_thread(struct target_pt_regs *regs,
1054 struct image_info *infop)
1055{
1056 regs->pc = infop->entry;
1057 regs->r1 = infop->start_stack;
1058
1059}
1060
1061#define ELF_EXEC_PAGESIZE 4096
1062
1063#define USE_ELF_CORE_DUMP
1064#define ELF_NREG 38
1065typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
1066
1067
1068static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUMBState *env)
1069{
1070 int i, pos = 0;
1071
1072 for (i = 0; i < 32; i++) {
1073 (*regs)[pos++] = tswapreg(env->regs[i]);
1074 }
1075
1076 (*regs)[pos++] = tswapreg(env->pc);
1077 (*regs)[pos++] = tswapreg(mb_cpu_read_msr(env));
1078 (*regs)[pos++] = 0;
1079 (*regs)[pos++] = tswapreg(env->ear);
1080 (*regs)[pos++] = 0;
1081 (*regs)[pos++] = tswapreg(env->esr);
1082}
1083
1084#endif
1085
1086#ifdef TARGET_NIOS2
1087
1088#define ELF_START_MMAP 0x80000000
1089
1090#define elf_check_arch(x) ((x) == EM_ALTERA_NIOS2)
1091
1092#define ELF_CLASS ELFCLASS32
1093#define ELF_ARCH EM_ALTERA_NIOS2
1094
1095static void init_thread(struct target_pt_regs *regs, struct image_info *infop)
1096{
1097 regs->ea = infop->entry;
1098 regs->sp = infop->start_stack;
1099 regs->estatus = 0x3;
1100}
1101
1102#define ELF_EXEC_PAGESIZE 4096
1103
1104#define USE_ELF_CORE_DUMP
1105#define ELF_NREG 49
1106typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
1107
1108
1109static void elf_core_copy_regs(target_elf_gregset_t *regs,
1110 const CPUNios2State *env)
1111{
1112 int i;
1113
1114 (*regs)[0] = -1;
1115 for (i = 1; i < 8; i++)
1116 (*regs)[i] = tswapreg(env->regs[i + 7]);
1117
1118 for (i = 8; i < 16; i++)
1119 (*regs)[i] = tswapreg(env->regs[i - 8]);
1120
1121 for (i = 16; i < 24; i++)
1122 (*regs)[i] = tswapreg(env->regs[i + 7]);
1123 (*regs)[24] = -1;
1124 (*regs)[25] = -1;
1125 (*regs)[26] = tswapreg(env->regs[R_GP]);
1126 (*regs)[27] = tswapreg(env->regs[R_SP]);
1127 (*regs)[28] = tswapreg(env->regs[R_FP]);
1128 (*regs)[29] = tswapreg(env->regs[R_EA]);
1129 (*regs)[30] = -1;
1130 (*regs)[31] = tswapreg(env->regs[R_RA]);
1131
1132 (*regs)[32] = tswapreg(env->regs[R_PC]);
1133
1134 (*regs)[33] = -1;
1135 (*regs)[34] = tswapreg(env->regs[CR_ESTATUS]);
1136
1137 for (i = 35; i < 49; i++)
1138 (*regs)[i] = -1;
1139}
1140
1141#endif
1142
1143#ifdef TARGET_OPENRISC
1144
1145#define ELF_START_MMAP 0x08000000
1146
1147#define ELF_ARCH EM_OPENRISC
1148#define ELF_CLASS ELFCLASS32
1149#define ELF_DATA ELFDATA2MSB
1150
1151static inline void init_thread(struct target_pt_regs *regs,
1152 struct image_info *infop)
1153{
1154 regs->pc = infop->entry;
1155 regs->gpr[1] = infop->start_stack;
1156}
1157
1158#define USE_ELF_CORE_DUMP
1159#define ELF_EXEC_PAGESIZE 8192
1160
1161
1162#define ELF_NREG 34
1163typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
1164
1165static void elf_core_copy_regs(target_elf_gregset_t *regs,
1166 const CPUOpenRISCState *env)
1167{
1168 int i;
1169
1170 for (i = 0; i < 32; i++) {
1171 (*regs)[i] = tswapreg(cpu_get_gpr(env, i));
1172 }
1173 (*regs)[32] = tswapreg(env->pc);
1174 (*regs)[33] = tswapreg(cpu_get_sr(env));
1175}
1176#define ELF_HWCAP 0
1177#define ELF_PLATFORM NULL
1178
1179#endif
1180
1181#ifdef TARGET_SH4
1182
1183#define ELF_START_MMAP 0x80000000
1184
1185#define ELF_CLASS ELFCLASS32
1186#define ELF_ARCH EM_SH
1187
1188static inline void init_thread(struct target_pt_regs *regs,
1189 struct image_info *infop)
1190{
1191
1192 regs->pc = infop->entry;
1193 regs->regs[15] = infop->start_stack;
1194}
1195
1196
1197#define ELF_NREG 23
1198typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
1199
1200
1201enum {
1202 TARGET_REG_PC = 16,
1203 TARGET_REG_PR = 17,
1204 TARGET_REG_SR = 18,
1205 TARGET_REG_GBR = 19,
1206 TARGET_REG_MACH = 20,
1207 TARGET_REG_MACL = 21,
1208 TARGET_REG_SYSCALL = 22
1209};
1210
1211static inline void elf_core_copy_regs(target_elf_gregset_t *regs,
1212 const CPUSH4State *env)
1213{
1214 int i;
1215
1216 for (i = 0; i < 16; i++) {
1217 (*regs)[i] = tswapreg(env->gregs[i]);
1218 }
1219
1220 (*regs)[TARGET_REG_PC] = tswapreg(env->pc);
1221 (*regs)[TARGET_REG_PR] = tswapreg(env->pr);
1222 (*regs)[TARGET_REG_SR] = tswapreg(env->sr);
1223 (*regs)[TARGET_REG_GBR] = tswapreg(env->gbr);
1224 (*regs)[TARGET_REG_MACH] = tswapreg(env->mach);
1225 (*regs)[TARGET_REG_MACL] = tswapreg(env->macl);
1226 (*regs)[TARGET_REG_SYSCALL] = 0;
1227}
1228
1229#define USE_ELF_CORE_DUMP
1230#define ELF_EXEC_PAGESIZE 4096
1231
1232enum {
1233 SH_CPU_HAS_FPU = 0x0001,
1234 SH_CPU_HAS_P2_FLUSH_BUG = 0x0002,
1235 SH_CPU_HAS_MMU_PAGE_ASSOC = 0x0004,
1236 SH_CPU_HAS_DSP = 0x0008,
1237 SH_CPU_HAS_PERF_COUNTER = 0x0010,
1238 SH_CPU_HAS_PTEA = 0x0020,
1239 SH_CPU_HAS_LLSC = 0x0040,
1240 SH_CPU_HAS_L2_CACHE = 0x0080,
1241 SH_CPU_HAS_OP32 = 0x0100,
1242 SH_CPU_HAS_PTEAEX = 0x0200,
1243};
1244
1245#define ELF_HWCAP get_elf_hwcap()
1246
1247static uint32_t get_elf_hwcap(void)
1248{
1249 SuperHCPU *cpu = SUPERH_CPU(thread_cpu);
1250 uint32_t hwcap = 0;
1251
1252 hwcap |= SH_CPU_HAS_FPU;
1253
1254 if (cpu->env.features & SH_FEATURE_SH4A) {
1255 hwcap |= SH_CPU_HAS_LLSC;
1256 }
1257
1258 return hwcap;
1259}
1260
1261#endif
1262
1263#ifdef TARGET_CRIS
1264
1265#define ELF_START_MMAP 0x80000000
1266
1267#define ELF_CLASS ELFCLASS32
1268#define ELF_ARCH EM_CRIS
1269
1270static inline void init_thread(struct target_pt_regs *regs,
1271 struct image_info *infop)
1272{
1273 regs->erp = infop->entry;
1274}
1275
1276#define ELF_EXEC_PAGESIZE 8192
1277
1278#endif
1279
1280#ifdef TARGET_M68K
1281
1282#define ELF_START_MMAP 0x80000000
1283
1284#define ELF_CLASS ELFCLASS32
1285#define ELF_ARCH EM_68K
1286
1287
1288
1289
1290static inline void init_thread(struct target_pt_regs *regs,
1291 struct image_info *infop)
1292{
1293 regs->usp = infop->start_stack;
1294 regs->sr = 0;
1295 regs->pc = infop->entry;
1296}
1297
1298
1299#define ELF_NREG 20
1300typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
1301
1302static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUM68KState *env)
1303{
1304 (*regs)[0] = tswapreg(env->dregs[1]);
1305 (*regs)[1] = tswapreg(env->dregs[2]);
1306 (*regs)[2] = tswapreg(env->dregs[3]);
1307 (*regs)[3] = tswapreg(env->dregs[4]);
1308 (*regs)[4] = tswapreg(env->dregs[5]);
1309 (*regs)[5] = tswapreg(env->dregs[6]);
1310 (*regs)[6] = tswapreg(env->dregs[7]);
1311 (*regs)[7] = tswapreg(env->aregs[0]);
1312 (*regs)[8] = tswapreg(env->aregs[1]);
1313 (*regs)[9] = tswapreg(env->aregs[2]);
1314 (*regs)[10] = tswapreg(env->aregs[3]);
1315 (*regs)[11] = tswapreg(env->aregs[4]);
1316 (*regs)[12] = tswapreg(env->aregs[5]);
1317 (*regs)[13] = tswapreg(env->aregs[6]);
1318 (*regs)[14] = tswapreg(env->dregs[0]);
1319 (*regs)[15] = tswapreg(env->aregs[7]);
1320 (*regs)[16] = tswapreg(env->dregs[0]);
1321 (*regs)[17] = tswapreg(env->sr);
1322 (*regs)[18] = tswapreg(env->pc);
1323 (*regs)[19] = 0;
1324}
1325
1326#define USE_ELF_CORE_DUMP
1327#define ELF_EXEC_PAGESIZE 8192
1328
1329#endif
1330
1331#ifdef TARGET_ALPHA
1332
1333#define ELF_START_MMAP (0x30000000000ULL)
1334
1335#define ELF_CLASS ELFCLASS64
1336#define ELF_ARCH EM_ALPHA
1337
1338static inline void init_thread(struct target_pt_regs *regs,
1339 struct image_info *infop)
1340{
1341 regs->pc = infop->entry;
1342 regs->ps = 8;
1343 regs->usp = infop->start_stack;
1344}
1345
1346#define ELF_EXEC_PAGESIZE 8192
1347
1348#endif
1349
1350#ifdef TARGET_S390X
1351
1352#define ELF_START_MMAP (0x20000000000ULL)
1353
1354#define ELF_CLASS ELFCLASS64
1355#define ELF_DATA ELFDATA2MSB
1356#define ELF_ARCH EM_S390
1357
1358#include "elf.h"
1359
1360#define ELF_HWCAP get_elf_hwcap()
1361
1362#define GET_FEATURE(_feat, _hwcap) \
1363 do { if (s390_has_feat(_feat)) { hwcap |= _hwcap; } } while (0)
1364
1365static uint32_t get_elf_hwcap(void)
1366{
1367
1368
1369
1370
1371 uint32_t hwcap = HWCAP_S390_ESAN3 | HWCAP_S390_ZARCH | HWCAP_S390_HIGH_GPRS;
1372
1373 GET_FEATURE(S390_FEAT_STFLE, HWCAP_S390_STFLE);
1374 GET_FEATURE(S390_FEAT_MSA, HWCAP_S390_MSA);
1375 GET_FEATURE(S390_FEAT_LONG_DISPLACEMENT, HWCAP_S390_LDISP);
1376 GET_FEATURE(S390_FEAT_EXTENDED_IMMEDIATE, HWCAP_S390_EIMM);
1377 if (s390_has_feat(S390_FEAT_EXTENDED_TRANSLATION_3) &&
1378 s390_has_feat(S390_FEAT_ETF3_ENH)) {
1379 hwcap |= HWCAP_S390_ETF3EH;
1380 }
1381 GET_FEATURE(S390_FEAT_VECTOR, HWCAP_S390_VXRS);
1382 GET_FEATURE(S390_FEAT_VECTOR_ENH, HWCAP_S390_VXRS_EXT);
1383
1384 return hwcap;
1385}
1386
1387static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
1388{
1389 regs->psw.addr = infop->entry;
1390 regs->psw.mask = PSW_MASK_64 | PSW_MASK_32;
1391 regs->gprs[15] = infop->start_stack;
1392}
1393
1394
1395#define ELF_NREG 27
1396typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
1397
1398enum {
1399 TARGET_REG_PSWM = 0,
1400 TARGET_REG_PSWA = 1,
1401 TARGET_REG_GPRS = 2,
1402 TARGET_REG_ARS = 18,
1403 TARGET_REG_ORIG_R2 = 26,
1404};
1405
1406static void elf_core_copy_regs(target_elf_gregset_t *regs,
1407 const CPUS390XState *env)
1408{
1409 int i;
1410 uint32_t *aregs;
1411
1412 (*regs)[TARGET_REG_PSWM] = tswapreg(env->psw.mask);
1413 (*regs)[TARGET_REG_PSWA] = tswapreg(env->psw.addr);
1414 for (i = 0; i < 16; i++) {
1415 (*regs)[TARGET_REG_GPRS + i] = tswapreg(env->regs[i]);
1416 }
1417 aregs = (uint32_t *)&((*regs)[TARGET_REG_ARS]);
1418 for (i = 0; i < 16; i++) {
1419 aregs[i] = tswap32(env->aregs[i]);
1420 }
1421 (*regs)[TARGET_REG_ORIG_R2] = 0;
1422}
1423
1424#define USE_ELF_CORE_DUMP
1425#define ELF_EXEC_PAGESIZE 4096
1426
1427#endif
1428
1429#ifdef TARGET_RISCV
1430
1431#define ELF_START_MMAP 0x80000000
1432#define ELF_ARCH EM_RISCV
1433
1434#ifdef TARGET_RISCV32
1435#define ELF_CLASS ELFCLASS32
1436#else
1437#define ELF_CLASS ELFCLASS64
1438#endif
1439
1440#define ELF_HWCAP get_elf_hwcap()
1441
1442static uint32_t get_elf_hwcap(void)
1443{
1444#define MISA_BIT(EXT) (1 << (EXT - 'A'))
1445 RISCVCPU *cpu = RISCV_CPU(thread_cpu);
1446 uint32_t mask = MISA_BIT('I') | MISA_BIT('M') | MISA_BIT('A')
1447 | MISA_BIT('F') | MISA_BIT('D') | MISA_BIT('C');
1448
1449 return cpu->env.misa_ext & mask;
1450#undef MISA_BIT
1451}
1452
1453static inline void init_thread(struct target_pt_regs *regs,
1454 struct image_info *infop)
1455{
1456 regs->sepc = infop->entry;
1457 regs->sp = infop->start_stack;
1458}
1459
1460#define ELF_EXEC_PAGESIZE 4096
1461
1462#endif
1463
1464#ifdef TARGET_HPPA
1465
1466#define ELF_START_MMAP 0x80000000
1467#define ELF_CLASS ELFCLASS32
1468#define ELF_ARCH EM_PARISC
1469#define ELF_PLATFORM "PARISC"
1470#define STACK_GROWS_DOWN 0
1471#define STACK_ALIGNMENT 64
1472
1473static inline void init_thread(struct target_pt_regs *regs,
1474 struct image_info *infop)
1475{
1476 regs->iaoq[0] = infop->entry;
1477 regs->iaoq[1] = infop->entry + 4;
1478 regs->gr[23] = 0;
1479 regs->gr[24] = infop->arg_start;
1480 regs->gr[25] = (infop->arg_end - infop->arg_start) / sizeof(abi_ulong);
1481
1482 regs->gr[30] = infop->start_stack + 64;
1483 regs->gr[31] = infop->entry;
1484}
1485
1486#endif
1487
1488#ifdef TARGET_XTENSA
1489
1490#define ELF_START_MMAP 0x20000000
1491
1492#define ELF_CLASS ELFCLASS32
1493#define ELF_ARCH EM_XTENSA
1494
1495static inline void init_thread(struct target_pt_regs *regs,
1496 struct image_info *infop)
1497{
1498 regs->windowbase = 0;
1499 regs->windowstart = 1;
1500 regs->areg[1] = infop->start_stack;
1501 regs->pc = infop->entry;
1502}
1503
1504
1505#define ELF_NREG 128
1506typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
1507
1508enum {
1509 TARGET_REG_PC,
1510 TARGET_REG_PS,
1511 TARGET_REG_LBEG,
1512 TARGET_REG_LEND,
1513 TARGET_REG_LCOUNT,
1514 TARGET_REG_SAR,
1515 TARGET_REG_WINDOWSTART,
1516 TARGET_REG_WINDOWBASE,
1517 TARGET_REG_THREADPTR,
1518 TARGET_REG_AR0 = 64,
1519};
1520
1521static void elf_core_copy_regs(target_elf_gregset_t *regs,
1522 const CPUXtensaState *env)
1523{
1524 unsigned i;
1525
1526 (*regs)[TARGET_REG_PC] = tswapreg(env->pc);
1527 (*regs)[TARGET_REG_PS] = tswapreg(env->sregs[PS] & ~PS_EXCM);
1528 (*regs)[TARGET_REG_LBEG] = tswapreg(env->sregs[LBEG]);
1529 (*regs)[TARGET_REG_LEND] = tswapreg(env->sregs[LEND]);
1530 (*regs)[TARGET_REG_LCOUNT] = tswapreg(env->sregs[LCOUNT]);
1531 (*regs)[TARGET_REG_SAR] = tswapreg(env->sregs[SAR]);
1532 (*regs)[TARGET_REG_WINDOWSTART] = tswapreg(env->sregs[WINDOW_START]);
1533 (*regs)[TARGET_REG_WINDOWBASE] = tswapreg(env->sregs[WINDOW_BASE]);
1534 (*regs)[TARGET_REG_THREADPTR] = tswapreg(env->uregs[THREADPTR]);
1535 xtensa_sync_phys_from_window((CPUXtensaState *)env);
1536 for (i = 0; i < env->config->nareg; ++i) {
1537 (*regs)[TARGET_REG_AR0 + i] = tswapreg(env->phys_regs[i]);
1538 }
1539}
1540
1541#define USE_ELF_CORE_DUMP
1542#define ELF_EXEC_PAGESIZE 4096
1543
1544#endif
1545
1546#ifdef TARGET_HEXAGON
1547
1548#define ELF_START_MMAP 0x20000000
1549
1550#define ELF_CLASS ELFCLASS32
1551#define ELF_ARCH EM_HEXAGON
1552
1553static inline void init_thread(struct target_pt_regs *regs,
1554 struct image_info *infop)
1555{
1556 regs->sepc = infop->entry;
1557 regs->sp = infop->start_stack;
1558}
1559
1560#endif
1561
1562#ifndef ELF_PLATFORM
1563#define ELF_PLATFORM (NULL)
1564#endif
1565
1566#ifndef ELF_MACHINE
1567#define ELF_MACHINE ELF_ARCH
1568#endif
1569
1570#ifndef elf_check_arch
1571#define elf_check_arch(x) ((x) == ELF_ARCH)
1572#endif
1573
1574#ifndef elf_check_abi
1575#define elf_check_abi(x) (1)
1576#endif
1577
1578#ifndef ELF_HWCAP
1579#define ELF_HWCAP 0
1580#endif
1581
1582#ifndef STACK_GROWS_DOWN
1583#define STACK_GROWS_DOWN 1
1584#endif
1585
1586#ifndef STACK_ALIGNMENT
1587#define STACK_ALIGNMENT 16
1588#endif
1589
1590#ifdef TARGET_ABI32
1591#undef ELF_CLASS
1592#define ELF_CLASS ELFCLASS32
1593#undef bswaptls
1594#define bswaptls(ptr) bswap32s(ptr)
1595#endif
1596
1597#include "elf.h"
1598
1599
1600#if defined(TARGET_AARCH64)
1601
1602static bool arch_parse_elf_property(uint32_t pr_type, uint32_t pr_datasz,
1603 const uint32_t *data,
1604 struct image_info *info,
1605 Error **errp)
1606{
1607 if (pr_type == GNU_PROPERTY_AARCH64_FEATURE_1_AND) {
1608 if (pr_datasz != sizeof(uint32_t)) {
1609 error_setg(errp, "Ill-formed GNU_PROPERTY_AARCH64_FEATURE_1_AND");
1610 return false;
1611 }
1612
1613 info->note_flags = *data;
1614 }
1615 return true;
1616}
1617#define ARCH_USE_GNU_PROPERTY 1
1618
1619#else
1620
1621static bool arch_parse_elf_property(uint32_t pr_type, uint32_t pr_datasz,
1622 const uint32_t *data,
1623 struct image_info *info,
1624 Error **errp)
1625{
1626 g_assert_not_reached();
1627}
1628#define ARCH_USE_GNU_PROPERTY 0
1629
1630#endif
1631
1632struct exec
1633{
1634 unsigned int a_info;
1635 unsigned int a_text;
1636 unsigned int a_data;
1637 unsigned int a_bss;
1638 unsigned int a_syms;
1639 unsigned int a_entry;
1640 unsigned int a_trsize;
1641 unsigned int a_drsize;
1642};
1643
1644
1645#define N_MAGIC(exec) ((exec).a_info & 0xffff)
1646#define OMAGIC 0407
1647#define NMAGIC 0410
1648#define ZMAGIC 0413
1649#define QMAGIC 0314
1650
1651
1652#define TARGET_ELF_EXEC_PAGESIZE \
1653 (((eppnt->p_align & ~qemu_host_page_mask) != 0) ? \
1654 TARGET_PAGE_SIZE : MAX(qemu_host_page_size, TARGET_PAGE_SIZE))
1655#define TARGET_ELF_PAGELENGTH(_v) ROUND_UP((_v), TARGET_ELF_EXEC_PAGESIZE)
1656#define TARGET_ELF_PAGESTART(_v) ((_v) & \
1657 ~(abi_ulong)(TARGET_ELF_EXEC_PAGESIZE-1))
1658#define TARGET_ELF_PAGEOFFSET(_v) ((_v) & (TARGET_ELF_EXEC_PAGESIZE-1))
1659
1660#define DLINFO_ITEMS 16
1661
1662static inline void memcpy_fromfs(void * to, const void * from, unsigned long n)
1663{
1664 memcpy(to, from, n);
1665}
1666
1667#ifdef BSWAP_NEEDED
1668static void bswap_ehdr(struct elfhdr *ehdr)
1669{
1670 bswap16s(&ehdr->e_type);
1671 bswap16s(&ehdr->e_machine);
1672 bswap32s(&ehdr->e_version);
1673 bswaptls(&ehdr->e_entry);
1674 bswaptls(&ehdr->e_phoff);
1675 bswaptls(&ehdr->e_shoff);
1676 bswap32s(&ehdr->e_flags);
1677 bswap16s(&ehdr->e_ehsize);
1678 bswap16s(&ehdr->e_phentsize);
1679 bswap16s(&ehdr->e_phnum);
1680 bswap16s(&ehdr->e_shentsize);
1681 bswap16s(&ehdr->e_shnum);
1682 bswap16s(&ehdr->e_shstrndx);
1683}
1684
1685static void bswap_phdr(struct elf_phdr *phdr, int phnum)
1686{
1687 int i;
1688 for (i = 0; i < phnum; ++i, ++phdr) {
1689 bswap32s(&phdr->p_type);
1690 bswap32s(&phdr->p_flags);
1691 bswaptls(&phdr->p_offset);
1692 bswaptls(&phdr->p_vaddr);
1693 bswaptls(&phdr->p_paddr);
1694 bswaptls(&phdr->p_filesz);
1695 bswaptls(&phdr->p_memsz);
1696 bswaptls(&phdr->p_align);
1697 }
1698}
1699
1700static void bswap_shdr(struct elf_shdr *shdr, int shnum)
1701{
1702 int i;
1703 for (i = 0; i < shnum; ++i, ++shdr) {
1704 bswap32s(&shdr->sh_name);
1705 bswap32s(&shdr->sh_type);
1706 bswaptls(&shdr->sh_flags);
1707 bswaptls(&shdr->sh_addr);
1708 bswaptls(&shdr->sh_offset);
1709 bswaptls(&shdr->sh_size);
1710 bswap32s(&shdr->sh_link);
1711 bswap32s(&shdr->sh_info);
1712 bswaptls(&shdr->sh_addralign);
1713 bswaptls(&shdr->sh_entsize);
1714 }
1715}
1716
1717static void bswap_sym(struct elf_sym *sym)
1718{
1719 bswap32s(&sym->st_name);
1720 bswaptls(&sym->st_value);
1721 bswaptls(&sym->st_size);
1722 bswap16s(&sym->st_shndx);
1723}
1724
1725#ifdef TARGET_MIPS
1726static void bswap_mips_abiflags(Mips_elf_abiflags_v0 *abiflags)
1727{
1728 bswap16s(&abiflags->version);
1729 bswap32s(&abiflags->ases);
1730 bswap32s(&abiflags->isa_ext);
1731 bswap32s(&abiflags->flags1);
1732 bswap32s(&abiflags->flags2);
1733}
1734#endif
1735#else
1736static inline void bswap_ehdr(struct elfhdr *ehdr) { }
1737static inline void bswap_phdr(struct elf_phdr *phdr, int phnum) { }
1738static inline void bswap_shdr(struct elf_shdr *shdr, int shnum) { }
1739static inline void bswap_sym(struct elf_sym *sym) { }
1740#ifdef TARGET_MIPS
1741static inline void bswap_mips_abiflags(Mips_elf_abiflags_v0 *abiflags) { }
1742#endif
1743#endif
1744
1745#ifdef USE_ELF_CORE_DUMP
1746static int elf_core_dump(int, const CPUArchState *);
1747#endif
1748static void load_symbols(struct elfhdr *hdr, int fd, abi_ulong load_bias);
1749
1750
1751
1752static bool elf_check_ident(struct elfhdr *ehdr)
1753{
1754 return (ehdr->e_ident[EI_MAG0] == ELFMAG0
1755 && ehdr->e_ident[EI_MAG1] == ELFMAG1
1756 && ehdr->e_ident[EI_MAG2] == ELFMAG2
1757 && ehdr->e_ident[EI_MAG3] == ELFMAG3
1758 && ehdr->e_ident[EI_CLASS] == ELF_CLASS
1759 && ehdr->e_ident[EI_DATA] == ELF_DATA
1760 && ehdr->e_ident[EI_VERSION] == EV_CURRENT);
1761}
1762
1763
1764
1765static bool elf_check_ehdr(struct elfhdr *ehdr)
1766{
1767 return (elf_check_arch(ehdr->e_machine)
1768 && elf_check_abi(ehdr->e_flags)
1769 && ehdr->e_ehsize == sizeof(struct elfhdr)
1770 && ehdr->e_phentsize == sizeof(struct elf_phdr)
1771 && (ehdr->e_type == ET_EXEC || ehdr->e_type == ET_DYN));
1772}
1773
1774
1775
1776
1777
1778
1779
1780static abi_ulong copy_elf_strings(int argc, char **argv, char *scratch,
1781 abi_ulong p, abi_ulong stack_limit)
1782{
1783 char *tmp;
1784 int len, i;
1785 abi_ulong top = p;
1786
1787 if (!p) {
1788 return 0;
1789 }
1790
1791 if (STACK_GROWS_DOWN) {
1792 int offset = ((p - 1) % TARGET_PAGE_SIZE) + 1;
1793 for (i = argc - 1; i >= 0; --i) {
1794 tmp = argv[i];
1795 if (!tmp) {
1796 fprintf(stderr, "VFS: argc is wrong");
1797 exit(-1);
1798 }
1799 len = strlen(tmp) + 1;
1800 tmp += len;
1801
1802 if (len > (p - stack_limit)) {
1803 return 0;
1804 }
1805 while (len) {
1806 int bytes_to_copy = (len > offset) ? offset : len;
1807 tmp -= bytes_to_copy;
1808 p -= bytes_to_copy;
1809 offset -= bytes_to_copy;
1810 len -= bytes_to_copy;
1811
1812 memcpy_fromfs(scratch + offset, tmp, bytes_to_copy);
1813
1814 if (offset == 0) {
1815 memcpy_to_target(p, scratch, top - p);
1816 top = p;
1817 offset = TARGET_PAGE_SIZE;
1818 }
1819 }
1820 }
1821 if (p != top) {
1822 memcpy_to_target(p, scratch + offset, top - p);
1823 }
1824 } else {
1825 int remaining = TARGET_PAGE_SIZE - (p % TARGET_PAGE_SIZE);
1826 for (i = 0; i < argc; ++i) {
1827 tmp = argv[i];
1828 if (!tmp) {
1829 fprintf(stderr, "VFS: argc is wrong");
1830 exit(-1);
1831 }
1832 len = strlen(tmp) + 1;
1833 if (len > (stack_limit - p)) {
1834 return 0;
1835 }
1836 while (len) {
1837 int bytes_to_copy = (len > remaining) ? remaining : len;
1838
1839 memcpy_fromfs(scratch + (p - top), tmp, bytes_to_copy);
1840
1841 tmp += bytes_to_copy;
1842 remaining -= bytes_to_copy;
1843 p += bytes_to_copy;
1844 len -= bytes_to_copy;
1845
1846 if (remaining == 0) {
1847 memcpy_to_target(top, scratch, p - top);
1848 top = p;
1849 remaining = TARGET_PAGE_SIZE;
1850 }
1851 }
1852 }
1853 if (p != top) {
1854 memcpy_to_target(top, scratch, p - top);
1855 }
1856 }
1857
1858 return p;
1859}
1860
1861
1862
1863
1864
1865
1866#define STACK_LOWER_LIMIT (32 * TARGET_PAGE_SIZE)
1867
1868static abi_ulong setup_arg_pages(struct linux_binprm *bprm,
1869 struct image_info *info)
1870{
1871 abi_ulong size, error, guard;
1872
1873 size = guest_stack_size;
1874 if (size < STACK_LOWER_LIMIT) {
1875 size = STACK_LOWER_LIMIT;
1876 }
1877 guard = TARGET_PAGE_SIZE;
1878 if (guard < qemu_real_host_page_size) {
1879 guard = qemu_real_host_page_size;
1880 }
1881
1882 error = target_mmap(0, size + guard, PROT_READ | PROT_WRITE,
1883 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
1884 if (error == -1) {
1885 perror("mmap stack");
1886 exit(-1);
1887 }
1888
1889
1890 if (STACK_GROWS_DOWN) {
1891 target_mprotect(error, guard, PROT_NONE);
1892 info->stack_limit = error + guard;
1893 return info->stack_limit + size - sizeof(void *);
1894 } else {
1895 target_mprotect(error + size, guard, PROT_NONE);
1896 info->stack_limit = error + size;
1897 return error;
1898 }
1899}
1900
1901
1902
1903static void zero_bss(abi_ulong elf_bss, abi_ulong last_bss, int prot)
1904{
1905 uintptr_t host_start, host_map_start, host_end;
1906
1907 last_bss = TARGET_PAGE_ALIGN(last_bss);
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920 host_start = (uintptr_t) g2h_untagged(elf_bss);
1921 host_end = (uintptr_t) g2h_untagged(last_bss);
1922 host_map_start = REAL_HOST_PAGE_ALIGN(host_start);
1923
1924 if (host_map_start < host_end) {
1925 void *p = mmap((void *)host_map_start, host_end - host_map_start,
1926 prot, MAP_FIXED | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
1927 if (p == MAP_FAILED) {
1928 perror("cannot mmap brk");
1929 exit(-1);
1930 }
1931 }
1932
1933
1934 if ((page_get_flags(last_bss-1) & prot) != prot) {
1935 page_set_flags(elf_bss & TARGET_PAGE_MASK, last_bss, prot | PAGE_VALID);
1936 }
1937
1938 if (host_start < host_map_start) {
1939 memset((void *)host_start, 0, host_map_start - host_start);
1940 }
1941}
1942
1943#ifdef TARGET_ARM
1944static int elf_is_fdpic(struct elfhdr *exec)
1945{
1946 return exec->e_ident[EI_OSABI] == ELFOSABI_ARM_FDPIC;
1947}
1948#else
1949
1950static int elf_is_fdpic(struct elfhdr *exec)
1951{
1952 return 0;
1953}
1954#endif
1955
1956static abi_ulong loader_build_fdpic_loadmap(struct image_info *info, abi_ulong sp)
1957{
1958 uint16_t n;
1959 struct elf32_fdpic_loadseg *loadsegs = info->loadsegs;
1960
1961
1962 n = info->nsegs;
1963 while (n--) {
1964 sp -= 12;
1965 put_user_u32(loadsegs[n].addr, sp+0);
1966 put_user_u32(loadsegs[n].p_vaddr, sp+4);
1967 put_user_u32(loadsegs[n].p_memsz, sp+8);
1968 }
1969
1970
1971 sp -= 4;
1972 put_user_u16(0, sp+0);
1973 put_user_u16(info->nsegs, sp+2);
1974
1975 info->personality = PER_LINUX_FDPIC;
1976 info->loadmap_addr = sp;
1977
1978 return sp;
1979}
1980
1981static abi_ulong create_elf_tables(abi_ulong p, int argc, int envc,
1982 struct elfhdr *exec,
1983 struct image_info *info,
1984 struct image_info *interp_info)
1985{
1986 abi_ulong sp;
1987 abi_ulong u_argc, u_argv, u_envp, u_auxv;
1988 int size;
1989 int i;
1990 abi_ulong u_rand_bytes;
1991 uint8_t k_rand_bytes[16];
1992 abi_ulong u_platform;
1993 const char *k_platform;
1994 const int n = sizeof(elf_addr_t);
1995
1996 sp = p;
1997
1998
1999 if (elf_is_fdpic(exec)) {
2000
2001 sp &= ~3;
2002 sp = loader_build_fdpic_loadmap(info, sp);
2003 info->other_info = interp_info;
2004 if (interp_info) {
2005 interp_info->other_info = info;
2006 sp = loader_build_fdpic_loadmap(interp_info, sp);
2007 info->interpreter_loadmap_addr = interp_info->loadmap_addr;
2008 info->interpreter_pt_dynamic_addr = interp_info->pt_dynamic_addr;
2009 } else {
2010 info->interpreter_loadmap_addr = 0;
2011 info->interpreter_pt_dynamic_addr = 0;
2012 }
2013 }
2014
2015 u_platform = 0;
2016 k_platform = ELF_PLATFORM;
2017 if (k_platform) {
2018 size_t len = strlen(k_platform) + 1;
2019 if (STACK_GROWS_DOWN) {
2020 sp -= (len + n - 1) & ~(n - 1);
2021 u_platform = sp;
2022
2023 memcpy_to_target(sp, k_platform, len);
2024 } else {
2025 memcpy_to_target(sp, k_platform, len);
2026 u_platform = sp;
2027 sp += len + 1;
2028 }
2029 }
2030
2031
2032
2033
2034 if (STACK_GROWS_DOWN) {
2035 sp = QEMU_ALIGN_DOWN(sp, 16);
2036 } else {
2037 sp = QEMU_ALIGN_UP(sp, 16);
2038 }
2039
2040
2041
2042
2043 qemu_guest_getrandom_nofail(k_rand_bytes, sizeof(k_rand_bytes));
2044 if (STACK_GROWS_DOWN) {
2045 sp -= 16;
2046 u_rand_bytes = sp;
2047
2048 memcpy_to_target(sp, k_rand_bytes, 16);
2049 } else {
2050 memcpy_to_target(sp, k_rand_bytes, 16);
2051 u_rand_bytes = sp;
2052 sp += 16;
2053 }
2054
2055 size = (DLINFO_ITEMS + 1) * 2;
2056 if (k_platform)
2057 size += 2;
2058#ifdef DLINFO_ARCH_ITEMS
2059 size += DLINFO_ARCH_ITEMS * 2;
2060#endif
2061#ifdef ELF_HWCAP2
2062 size += 2;
2063#endif
2064 info->auxv_len = size * n;
2065
2066 size += envc + argc + 2;
2067 size += 1;
2068 size *= n;
2069
2070
2071 if (STACK_GROWS_DOWN) {
2072 u_argc = QEMU_ALIGN_DOWN(sp - size, STACK_ALIGNMENT);
2073 sp = u_argc;
2074 } else {
2075 u_argc = sp;
2076 sp = QEMU_ALIGN_UP(sp + size, STACK_ALIGNMENT);
2077 }
2078
2079 u_argv = u_argc + n;
2080 u_envp = u_argv + (argc + 1) * n;
2081 u_auxv = u_envp + (envc + 1) * n;
2082 info->saved_auxv = u_auxv;
2083 info->arg_start = u_argv;
2084 info->arg_end = u_argv + argc * n;
2085
2086
2087
2088
2089#define NEW_AUX_ENT(id, val) do { \
2090 put_user_ual(id, u_auxv); u_auxv += n; \
2091 put_user_ual(val, u_auxv); u_auxv += n; \
2092 } while(0)
2093
2094#ifdef ARCH_DLINFO
2095
2096
2097
2098
2099 ARCH_DLINFO;
2100#endif
2101
2102
2103
2104 NEW_AUX_ENT(AT_PHDR, (abi_ulong)(info->load_addr + exec->e_phoff));
2105 NEW_AUX_ENT(AT_PHENT, (abi_ulong)(sizeof (struct elf_phdr)));
2106 NEW_AUX_ENT(AT_PHNUM, (abi_ulong)(exec->e_phnum));
2107 if ((info->alignment & ~qemu_host_page_mask) != 0) {
2108
2109 NEW_AUX_ENT(AT_PAGESZ, (abi_ulong)(TARGET_PAGE_SIZE));
2110 } else {
2111 NEW_AUX_ENT(AT_PAGESZ, (abi_ulong)(MAX(TARGET_PAGE_SIZE,
2112 qemu_host_page_size)));
2113 }
2114 NEW_AUX_ENT(AT_BASE, (abi_ulong)(interp_info ? interp_info->load_addr : 0));
2115 NEW_AUX_ENT(AT_FLAGS, (abi_ulong)0);
2116 NEW_AUX_ENT(AT_ENTRY, info->entry);
2117 NEW_AUX_ENT(AT_UID, (abi_ulong) getuid());
2118 NEW_AUX_ENT(AT_EUID, (abi_ulong) geteuid());
2119 NEW_AUX_ENT(AT_GID, (abi_ulong) getgid());
2120 NEW_AUX_ENT(AT_EGID, (abi_ulong) getegid());
2121 NEW_AUX_ENT(AT_HWCAP, (abi_ulong) ELF_HWCAP);
2122 NEW_AUX_ENT(AT_CLKTCK, (abi_ulong) sysconf(_SC_CLK_TCK));
2123 NEW_AUX_ENT(AT_RANDOM, (abi_ulong) u_rand_bytes);
2124 NEW_AUX_ENT(AT_SECURE, (abi_ulong) qemu_getauxval(AT_SECURE));
2125 NEW_AUX_ENT(AT_EXECFN, info->file_string);
2126
2127#ifdef ELF_HWCAP2
2128 NEW_AUX_ENT(AT_HWCAP2, (abi_ulong) ELF_HWCAP2);
2129#endif
2130
2131 if (u_platform) {
2132 NEW_AUX_ENT(AT_PLATFORM, u_platform);
2133 }
2134 NEW_AUX_ENT (AT_NULL, 0);
2135#undef NEW_AUX_ENT
2136
2137
2138
2139
2140 assert(info->auxv_len == u_auxv - info->saved_auxv);
2141
2142 put_user_ual(argc, u_argc);
2143
2144 p = info->arg_strings;
2145 for (i = 0; i < argc; ++i) {
2146 put_user_ual(p, u_argv);
2147 u_argv += n;
2148 p += target_strlen(p) + 1;
2149 }
2150 put_user_ual(0, u_argv);
2151
2152 p = info->env_strings;
2153 for (i = 0; i < envc; ++i) {
2154 put_user_ual(p, u_envp);
2155 u_envp += n;
2156 p += target_strlen(p) + 1;
2157 }
2158 put_user_ual(0, u_envp);
2159
2160 return sp;
2161}
2162
2163#ifndef ARM_COMMPAGE
2164#define ARM_COMMPAGE 0
2165#define init_guest_commpage() true
2166#endif
2167
2168static void pgb_fail_in_use(const char *image_name)
2169{
2170 error_report("%s: requires virtual address space that is in use "
2171 "(omit the -B option or choose a different value)",
2172 image_name);
2173 exit(EXIT_FAILURE);
2174}
2175
2176static void pgb_have_guest_base(const char *image_name, abi_ulong guest_loaddr,
2177 abi_ulong guest_hiaddr, long align)
2178{
2179 const int flags = MAP_ANONYMOUS | MAP_PRIVATE | MAP_NORESERVE;
2180 void *addr, *test;
2181
2182 if (!QEMU_IS_ALIGNED(guest_base, align)) {
2183 fprintf(stderr, "Requested guest base %p does not satisfy "
2184 "host minimum alignment (0x%lx)\n",
2185 (void *)guest_base, align);
2186 exit(EXIT_FAILURE);
2187 }
2188
2189
2190 if (reserved_va) {
2191 if (guest_hiaddr > reserved_va) {
2192 error_report("%s: requires more than reserved virtual "
2193 "address space (0x%" PRIx64 " > 0x%lx)",
2194 image_name, (uint64_t)guest_hiaddr, reserved_va);
2195 exit(EXIT_FAILURE);
2196 }
2197 } else {
2198#if HOST_LONG_BITS < TARGET_ABI_BITS
2199 if ((guest_hiaddr - guest_base) > ~(uintptr_t)0) {
2200 error_report("%s: requires more virtual address space "
2201 "than the host can provide (0x%" PRIx64 ")",
2202 image_name, (uint64_t)guest_hiaddr - guest_base);
2203 exit(EXIT_FAILURE);
2204 }
2205#endif
2206 }
2207
2208
2209
2210
2211
2212 if (reserved_va) {
2213 guest_loaddr = (guest_base >= mmap_min_addr ? 0
2214 : mmap_min_addr - guest_base);
2215 guest_hiaddr = reserved_va;
2216 }
2217
2218
2219 test = g2h_untagged(guest_loaddr);
2220 addr = mmap(test, guest_hiaddr - guest_loaddr, PROT_NONE, flags, -1, 0);
2221 if (test != addr) {
2222 pgb_fail_in_use(image_name);
2223 }
2224}
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238static uintptr_t pgd_find_hole_fallback(uintptr_t guest_size, uintptr_t brk,
2239 long align, uintptr_t offset)
2240{
2241 uintptr_t base;
2242
2243
2244 base = ROUND_UP(mmap_min_addr, align);
2245
2246 while (true) {
2247 uintptr_t align_start, end;
2248 align_start = ROUND_UP(base, align);
2249 end = align_start + guest_size + offset;
2250
2251
2252 if (align_start <= brk && brk < end) {
2253 base = brk + (16 * MiB);
2254 continue;
2255 } else if (align_start + guest_size < align_start) {
2256
2257 return -1;
2258 } else {
2259 int flags = MAP_ANONYMOUS | MAP_PRIVATE | MAP_NORESERVE |
2260 MAP_FIXED_NOREPLACE;
2261 void * mmap_start = mmap((void *) align_start, guest_size,
2262 PROT_NONE, flags, -1, 0);
2263 if (mmap_start != MAP_FAILED) {
2264 munmap(mmap_start, guest_size);
2265 if (mmap_start == (void *) align_start) {
2266 return (uintptr_t) mmap_start + offset;
2267 }
2268 }
2269 base += qemu_host_page_size;
2270 }
2271 }
2272}
2273
2274
2275static uintptr_t pgb_find_hole(uintptr_t guest_loaddr, uintptr_t guest_size,
2276 long align, uintptr_t offset)
2277{
2278 GSList *maps, *iter;
2279 uintptr_t this_start, this_end, next_start, brk;
2280 intptr_t ret = -1;
2281
2282 assert(QEMU_IS_ALIGNED(guest_loaddr, align));
2283
2284 maps = read_self_maps();
2285
2286
2287 brk = (uintptr_t)sbrk(0);
2288
2289 if (!maps) {
2290 ret = pgd_find_hole_fallback(guest_size, brk, align, offset);
2291 return ret == -1 ? -1 : ret - guest_loaddr;
2292 }
2293
2294
2295 this_start = mmap_min_addr;
2296
2297 for (iter = maps; iter;
2298 this_start = next_start, iter = g_slist_next(iter)) {
2299 uintptr_t align_start, hole_size;
2300
2301 this_end = ((MapInfo *)iter->data)->start;
2302 next_start = ((MapInfo *)iter->data)->end;
2303 align_start = ROUND_UP(this_start + offset, align);
2304
2305
2306 if (align_start >= this_end) {
2307 continue;
2308 }
2309 hole_size = this_end - align_start;
2310 if (hole_size < guest_size) {
2311 continue;
2312 }
2313
2314
2315 if (this_start <= brk && brk < this_end) {
2316 hole_size -= guest_size;
2317 if (sizeof(uintptr_t) == 8 && hole_size >= 1 * GiB) {
2318 align_start += 1 * GiB;
2319 } else if (hole_size >= 16 * MiB) {
2320 align_start += 16 * MiB;
2321 } else {
2322 align_start = (this_end - guest_size) & -align;
2323 if (align_start < this_start) {
2324 continue;
2325 }
2326 }
2327 }
2328
2329
2330 if (ret < 0) {
2331 ret = align_start - guest_loaddr;
2332 }
2333
2334 if (align_start <= guest_loaddr &&
2335 guest_loaddr + guest_size <= this_end) {
2336 ret = 0;
2337 }
2338
2339 if (this_end >= guest_loaddr) {
2340 break;
2341 }
2342 }
2343 free_self_maps(maps);
2344
2345 return ret;
2346}
2347
2348static void pgb_static(const char *image_name, abi_ulong orig_loaddr,
2349 abi_ulong orig_hiaddr, long align)
2350{
2351 uintptr_t loaddr = orig_loaddr;
2352 uintptr_t hiaddr = orig_hiaddr;
2353 uintptr_t offset = 0;
2354 uintptr_t addr;
2355
2356 if (hiaddr != orig_hiaddr) {
2357 error_report("%s: requires virtual address space that the "
2358 "host cannot provide (0x%" PRIx64 ")",
2359 image_name, (uint64_t)orig_hiaddr);
2360 exit(EXIT_FAILURE);
2361 }
2362
2363 loaddr &= -align;
2364 if (ARM_COMMPAGE) {
2365
2366
2367
2368
2369
2370
2371
2372 if (sizeof(uintptr_t) == 8 || loaddr >= 0x80000000u) {
2373 hiaddr = (uintptr_t) 4 << 30;
2374 } else {
2375 offset = -(ARM_COMMPAGE & -align);
2376 }
2377 }
2378
2379 addr = pgb_find_hole(loaddr, hiaddr - loaddr, align, offset);
2380 if (addr == -1) {
2381
2382
2383
2384
2385
2386
2387 error_report("%s: Unable to allocate %#zx bytes of "
2388 "virtual address space", image_name,
2389 (size_t)(hiaddr - loaddr));
2390 exit(EXIT_FAILURE);
2391 }
2392
2393 guest_base = addr;
2394}
2395
2396static void pgb_dynamic(const char *image_name, long align)
2397{
2398
2399
2400
2401
2402
2403 if (ARM_COMMPAGE) {
2404 uintptr_t addr, commpage;
2405
2406
2407 assert(sizeof(uintptr_t) == 4);
2408
2409
2410
2411
2412
2413 commpage = ARM_COMMPAGE & -align;
2414 addr = pgb_find_hole(commpage, -commpage, align, 0);
2415 assert(addr != -1);
2416 guest_base = addr;
2417 }
2418}
2419
2420static void pgb_reserved_va(const char *image_name, abi_ulong guest_loaddr,
2421 abi_ulong guest_hiaddr, long align)
2422{
2423 int flags = MAP_ANONYMOUS | MAP_PRIVATE | MAP_NORESERVE;
2424 void *addr, *test;
2425
2426 if (guest_hiaddr > reserved_va) {
2427 error_report("%s: requires more than reserved virtual "
2428 "address space (0x%" PRIx64 " > 0x%lx)",
2429 image_name, (uint64_t)guest_hiaddr, reserved_va);
2430 exit(EXIT_FAILURE);
2431 }
2432
2433
2434 pgb_static(image_name, 0, reserved_va, align);
2435
2436
2437 flags |= MAP_FIXED_NOREPLACE;
2438
2439
2440 assert(guest_base != 0);
2441 test = g2h_untagged(0);
2442 addr = mmap(test, reserved_va, PROT_NONE, flags, -1, 0);
2443 if (addr == MAP_FAILED || addr != test) {
2444 error_report("Unable to reserve 0x%lx bytes of virtual address "
2445 "space at %p (%s) for use as guest address space (check your"
2446 "virtual memory ulimit setting, min_mmap_addr or reserve less "
2447 "using -R option)", reserved_va, test, strerror(errno));
2448 exit(EXIT_FAILURE);
2449 }
2450}
2451
2452void probe_guest_base(const char *image_name, abi_ulong guest_loaddr,
2453 abi_ulong guest_hiaddr)
2454{
2455
2456 uintptr_t align = MAX(SHMLBA, qemu_host_page_size);
2457
2458 if (have_guest_base) {
2459 pgb_have_guest_base(image_name, guest_loaddr, guest_hiaddr, align);
2460 } else if (reserved_va) {
2461 pgb_reserved_va(image_name, guest_loaddr, guest_hiaddr, align);
2462 } else if (guest_loaddr) {
2463 pgb_static(image_name, guest_loaddr, guest_hiaddr, align);
2464 } else {
2465 pgb_dynamic(image_name, align);
2466 }
2467
2468
2469 if (!init_guest_commpage()) {
2470
2471
2472
2473
2474
2475 assert(have_guest_base);
2476 pgb_fail_in_use(image_name);
2477 }
2478
2479 assert(QEMU_IS_ALIGNED(guest_base, align));
2480 qemu_log_mask(CPU_LOG_PAGE, "Locating guest address space "
2481 "@ 0x%" PRIx64 "\n", (uint64_t)guest_base);
2482}
2483
2484enum {
2485
2486 GNU0_MAGIC = const_le32('G' | 'N' << 8 | 'U' << 16),
2487 NOTE_DATA_SZ = 1 * KiB,
2488 NOTE_NAME_SZ = 4,
2489 ELF_GNU_PROPERTY_ALIGN = ELF_CLASS == ELFCLASS32 ? 4 : 8,
2490};
2491
2492
2493
2494
2495
2496static bool parse_elf_property(const uint32_t *data, int *off, int datasz,
2497 struct image_info *info, bool have_prev_type,
2498 uint32_t *prev_type, Error **errp)
2499{
2500 uint32_t pr_type, pr_datasz, step;
2501
2502 if (*off > datasz || !QEMU_IS_ALIGNED(*off, ELF_GNU_PROPERTY_ALIGN)) {
2503 goto error_data;
2504 }
2505 datasz -= *off;
2506 data += *off / sizeof(uint32_t);
2507
2508 if (datasz < 2 * sizeof(uint32_t)) {
2509 goto error_data;
2510 }
2511 pr_type = data[0];
2512 pr_datasz = data[1];
2513 data += 2;
2514 datasz -= 2 * sizeof(uint32_t);
2515 step = ROUND_UP(pr_datasz, ELF_GNU_PROPERTY_ALIGN);
2516 if (step > datasz) {
2517 goto error_data;
2518 }
2519
2520
2521 if (have_prev_type && pr_type <= *prev_type) {
2522 if (pr_type == *prev_type) {
2523 error_setg(errp, "Duplicate property in PT_GNU_PROPERTY");
2524 } else {
2525 error_setg(errp, "Unsorted property in PT_GNU_PROPERTY");
2526 }
2527 return false;
2528 }
2529 *prev_type = pr_type;
2530
2531 if (!arch_parse_elf_property(pr_type, pr_datasz, data, info, errp)) {
2532 return false;
2533 }
2534
2535 *off += 2 * sizeof(uint32_t) + step;
2536 return true;
2537
2538 error_data:
2539 error_setg(errp, "Ill-formed property in PT_GNU_PROPERTY");
2540 return false;
2541}
2542
2543
2544static bool parse_elf_properties(int image_fd,
2545 struct image_info *info,
2546 const struct elf_phdr *phdr,
2547 char bprm_buf[BPRM_BUF_SIZE],
2548 Error **errp)
2549{
2550 union {
2551 struct elf_note nhdr;
2552 uint32_t data[NOTE_DATA_SZ / sizeof(uint32_t)];
2553 } note;
2554
2555 int n, off, datasz;
2556 bool have_prev_type;
2557 uint32_t prev_type;
2558
2559
2560 if (!ARCH_USE_GNU_PROPERTY) {
2561 return true;
2562 }
2563
2564
2565 n = phdr->p_filesz;
2566 if (n > sizeof(note)) {
2567 error_setg(errp, "PT_GNU_PROPERTY too large");
2568 return false;
2569 }
2570 if (n < sizeof(note.nhdr)) {
2571 error_setg(errp, "PT_GNU_PROPERTY too small");
2572 return false;
2573 }
2574
2575 if (phdr->p_offset + n <= BPRM_BUF_SIZE) {
2576 memcpy(¬e, bprm_buf + phdr->p_offset, n);
2577 } else {
2578 ssize_t len = pread(image_fd, ¬e, n, phdr->p_offset);
2579 if (len != n) {
2580 error_setg_errno(errp, errno, "Error reading file header");
2581 return false;
2582 }
2583 }
2584
2585
2586
2587
2588
2589#ifdef BSWAP_NEEDED
2590 for (int i = 0; i < n / 4; i++) {
2591 bswap32s(note.data + i);
2592 }
2593#endif
2594
2595
2596
2597
2598
2599
2600 if (note.nhdr.n_type != NT_GNU_PROPERTY_TYPE_0 ||
2601 note.nhdr.n_namesz != NOTE_NAME_SZ ||
2602 note.data[3] != GNU0_MAGIC) {
2603 error_setg(errp, "Invalid note in PT_GNU_PROPERTY");
2604 return false;
2605 }
2606 off = sizeof(note.nhdr) + NOTE_NAME_SZ;
2607
2608 datasz = note.nhdr.n_descsz + off;
2609 if (datasz > n) {
2610 error_setg(errp, "Invalid note size in PT_GNU_PROPERTY");
2611 return false;
2612 }
2613
2614 have_prev_type = false;
2615 prev_type = 0;
2616 while (1) {
2617 if (off == datasz) {
2618 return true;
2619 }
2620 if (!parse_elf_property(note.data, &off, datasz, info,
2621 have_prev_type, &prev_type, errp)) {
2622 return false;
2623 }
2624 have_prev_type = true;
2625 }
2626}
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640static void load_elf_image(const char *image_name, int image_fd,
2641 struct image_info *info, char **pinterp_name,
2642 char bprm_buf[BPRM_BUF_SIZE])
2643{
2644 struct elfhdr *ehdr = (struct elfhdr *)bprm_buf;
2645 struct elf_phdr *phdr;
2646 abi_ulong load_addr, load_bias, loaddr, hiaddr, error;
2647 int i, retval, prot_exec;
2648 Error *err = NULL;
2649
2650
2651 if (!elf_check_ident(ehdr)) {
2652 error_setg(&err, "Invalid ELF image for this architecture");
2653 goto exit_errmsg;
2654 }
2655 bswap_ehdr(ehdr);
2656 if (!elf_check_ehdr(ehdr)) {
2657 error_setg(&err, "Invalid ELF image for this architecture");
2658 goto exit_errmsg;
2659 }
2660
2661 i = ehdr->e_phnum * sizeof(struct elf_phdr);
2662 if (ehdr->e_phoff + i <= BPRM_BUF_SIZE) {
2663 phdr = (struct elf_phdr *)(bprm_buf + ehdr->e_phoff);
2664 } else {
2665 phdr = (struct elf_phdr *) alloca(i);
2666 retval = pread(image_fd, phdr, i, ehdr->e_phoff);
2667 if (retval != i) {
2668 goto exit_read;
2669 }
2670 }
2671 bswap_phdr(phdr, ehdr->e_phnum);
2672
2673 info->nsegs = 0;
2674 info->pt_dynamic_addr = 0;
2675
2676 mmap_lock();
2677
2678
2679
2680
2681
2682 loaddr = -1, hiaddr = 0;
2683 info->alignment = 0;
2684 for (i = 0; i < ehdr->e_phnum; ++i) {
2685 struct elf_phdr *eppnt = phdr + i;
2686 if (eppnt->p_type == PT_LOAD) {
2687 abi_ulong a = eppnt->p_vaddr - eppnt->p_offset;
2688 if (a < loaddr) {
2689 loaddr = a;
2690 }
2691 a = eppnt->p_vaddr + eppnt->p_memsz;
2692 if (a > hiaddr) {
2693 hiaddr = a;
2694 }
2695 ++info->nsegs;
2696 info->alignment |= eppnt->p_align;
2697 } else if (eppnt->p_type == PT_INTERP && pinterp_name) {
2698 g_autofree char *interp_name = NULL;
2699
2700 if (*pinterp_name) {
2701 error_setg(&err, "Multiple PT_INTERP entries");
2702 goto exit_errmsg;
2703 }
2704
2705 interp_name = g_malloc(eppnt->p_filesz);
2706
2707 if (eppnt->p_offset + eppnt->p_filesz <= BPRM_BUF_SIZE) {
2708 memcpy(interp_name, bprm_buf + eppnt->p_offset,
2709 eppnt->p_filesz);
2710 } else {
2711 retval = pread(image_fd, interp_name, eppnt->p_filesz,
2712 eppnt->p_offset);
2713 if (retval != eppnt->p_filesz) {
2714 goto exit_read;
2715 }
2716 }
2717 if (interp_name[eppnt->p_filesz - 1] != 0) {
2718 error_setg(&err, "Invalid PT_INTERP entry");
2719 goto exit_errmsg;
2720 }
2721 *pinterp_name = g_steal_pointer(&interp_name);
2722 } else if (eppnt->p_type == PT_GNU_PROPERTY) {
2723 if (!parse_elf_properties(image_fd, info, eppnt, bprm_buf, &err)) {
2724 goto exit_errmsg;
2725 }
2726 }
2727 }
2728
2729 if (pinterp_name != NULL) {
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742 info->reserve_brk = 16 * MiB;
2743 hiaddr += info->reserve_brk;
2744
2745 if (ehdr->e_type == ET_EXEC) {
2746
2747
2748
2749
2750 probe_guest_base(image_name, loaddr, hiaddr);
2751 } else {
2752
2753
2754
2755
2756 probe_guest_base(image_name, 0, hiaddr - loaddr);
2757 }
2758 }
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774 load_addr = target_mmap(loaddr, hiaddr - loaddr, PROT_NONE,
2775 MAP_PRIVATE | MAP_ANON | MAP_NORESERVE |
2776 (ehdr->e_type == ET_EXEC ? MAP_FIXED : 0),
2777 -1, 0);
2778 if (load_addr == -1) {
2779 goto exit_mmap;
2780 }
2781 load_bias = load_addr - loaddr;
2782
2783 if (elf_is_fdpic(ehdr)) {
2784 struct elf32_fdpic_loadseg *loadsegs = info->loadsegs =
2785 g_malloc(sizeof(*loadsegs) * info->nsegs);
2786
2787 for (i = 0; i < ehdr->e_phnum; ++i) {
2788 switch (phdr[i].p_type) {
2789 case PT_DYNAMIC:
2790 info->pt_dynamic_addr = phdr[i].p_vaddr + load_bias;
2791 break;
2792 case PT_LOAD:
2793 loadsegs->addr = phdr[i].p_vaddr + load_bias;
2794 loadsegs->p_vaddr = phdr[i].p_vaddr;
2795 loadsegs->p_memsz = phdr[i].p_memsz;
2796 ++loadsegs;
2797 break;
2798 }
2799 }
2800 }
2801
2802 info->load_bias = load_bias;
2803 info->code_offset = load_bias;
2804 info->data_offset = load_bias;
2805 info->load_addr = load_addr;
2806 info->entry = ehdr->e_entry + load_bias;
2807 info->start_code = -1;
2808 info->end_code = 0;
2809 info->start_data = -1;
2810 info->end_data = 0;
2811 info->brk = 0;
2812 info->elf_flags = ehdr->e_flags;
2813
2814 prot_exec = PROT_EXEC;
2815#ifdef TARGET_AARCH64
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827 if ((info->note_flags & GNU_PROPERTY_AARCH64_FEATURE_1_BTI)
2828 && (pinterp_name == NULL || *pinterp_name == 0)
2829 && cpu_isar_feature(aa64_bti, ARM_CPU(thread_cpu))) {
2830 prot_exec |= TARGET_PROT_BTI;
2831 }
2832#endif
2833
2834 for (i = 0; i < ehdr->e_phnum; i++) {
2835 struct elf_phdr *eppnt = phdr + i;
2836 if (eppnt->p_type == PT_LOAD) {
2837 abi_ulong vaddr, vaddr_po, vaddr_ps, vaddr_ef, vaddr_em, vaddr_len;
2838 int elf_prot = 0;
2839
2840 if (eppnt->p_flags & PF_R) {
2841 elf_prot |= PROT_READ;
2842 }
2843 if (eppnt->p_flags & PF_W) {
2844 elf_prot |= PROT_WRITE;
2845 }
2846 if (eppnt->p_flags & PF_X) {
2847 elf_prot |= prot_exec;
2848 }
2849
2850 vaddr = load_bias + eppnt->p_vaddr;
2851 vaddr_po = TARGET_ELF_PAGEOFFSET(vaddr);
2852 vaddr_ps = TARGET_ELF_PAGESTART(vaddr);
2853
2854 vaddr_ef = vaddr + eppnt->p_filesz;
2855 vaddr_em = vaddr + eppnt->p_memsz;
2856
2857
2858
2859
2860
2861 if (eppnt->p_filesz != 0) {
2862 vaddr_len = TARGET_ELF_PAGELENGTH(eppnt->p_filesz + vaddr_po);
2863 error = target_mmap(vaddr_ps, vaddr_len, elf_prot,
2864 MAP_PRIVATE | MAP_FIXED,
2865 image_fd, eppnt->p_offset - vaddr_po);
2866
2867 if (error == -1) {
2868 goto exit_mmap;
2869 }
2870
2871
2872
2873
2874 if (eppnt->p_filesz < eppnt->p_memsz) {
2875 zero_bss(vaddr_ef, vaddr_em, elf_prot);
2876 }
2877 } else if (eppnt->p_memsz != 0) {
2878 vaddr_len = TARGET_ELF_PAGELENGTH(eppnt->p_memsz + vaddr_po);
2879 error = target_mmap(vaddr_ps, vaddr_len, elf_prot,
2880 MAP_PRIVATE | MAP_FIXED | MAP_ANONYMOUS,
2881 -1, 0);
2882
2883 if (error == -1) {
2884 goto exit_mmap;
2885 }
2886 }
2887
2888
2889 if (elf_prot & PROT_EXEC) {
2890 if (vaddr < info->start_code) {
2891 info->start_code = vaddr;
2892 }
2893 if (vaddr_ef > info->end_code) {
2894 info->end_code = vaddr_ef;
2895 }
2896 }
2897 if (elf_prot & PROT_WRITE) {
2898 if (vaddr < info->start_data) {
2899 info->start_data = vaddr;
2900 }
2901 if (vaddr_ef > info->end_data) {
2902 info->end_data = vaddr_ef;
2903 }
2904 }
2905 if (vaddr_em > info->brk) {
2906 info->brk = vaddr_em;
2907 }
2908#ifdef TARGET_MIPS
2909 } else if (eppnt->p_type == PT_MIPS_ABIFLAGS) {
2910 Mips_elf_abiflags_v0 abiflags;
2911 if (eppnt->p_filesz < sizeof(Mips_elf_abiflags_v0)) {
2912 error_setg(&err, "Invalid PT_MIPS_ABIFLAGS entry");
2913 goto exit_errmsg;
2914 }
2915 if (eppnt->p_offset + eppnt->p_filesz <= BPRM_BUF_SIZE) {
2916 memcpy(&abiflags, bprm_buf + eppnt->p_offset,
2917 sizeof(Mips_elf_abiflags_v0));
2918 } else {
2919 retval = pread(image_fd, &abiflags, sizeof(Mips_elf_abiflags_v0),
2920 eppnt->p_offset);
2921 if (retval != sizeof(Mips_elf_abiflags_v0)) {
2922 goto exit_read;
2923 }
2924 }
2925 bswap_mips_abiflags(&abiflags);
2926 info->fp_abi = abiflags.fp_abi;
2927#endif
2928 }
2929 }
2930
2931 if (info->end_data == 0) {
2932 info->start_data = info->end_code;
2933 info->end_data = info->end_code;
2934 }
2935
2936 if (qemu_log_enabled()) {
2937 load_symbols(ehdr, image_fd, load_bias);
2938 }
2939
2940 mmap_unlock();
2941
2942 close(image_fd);
2943 return;
2944
2945 exit_read:
2946 if (retval >= 0) {
2947 error_setg(&err, "Incomplete read of file header");
2948 } else {
2949 error_setg_errno(&err, errno, "Error reading file header");
2950 }
2951 goto exit_errmsg;
2952 exit_mmap:
2953 error_setg_errno(&err, errno, "Error mapping file");
2954 goto exit_errmsg;
2955 exit_errmsg:
2956 error_reportf_err(err, "%s: ", image_name);
2957 exit(-1);
2958}
2959
2960static void load_elf_interp(const char *filename, struct image_info *info,
2961 char bprm_buf[BPRM_BUF_SIZE])
2962{
2963 int fd, retval;
2964 Error *err = NULL;
2965
2966 fd = open(path(filename), O_RDONLY);
2967 if (fd < 0) {
2968 error_setg_file_open(&err, errno, filename);
2969 error_report_err(err);
2970 exit(-1);
2971 }
2972
2973 retval = read(fd, bprm_buf, BPRM_BUF_SIZE);
2974 if (retval < 0) {
2975 error_setg_errno(&err, errno, "Error reading file header");
2976 error_reportf_err(err, "%s: ", filename);
2977 exit(-1);
2978 }
2979
2980 if (retval < BPRM_BUF_SIZE) {
2981 memset(bprm_buf + retval, 0, BPRM_BUF_SIZE - retval);
2982 }
2983
2984 load_elf_image(filename, fd, info, NULL, bprm_buf);
2985}
2986
2987static int symfind(const void *s0, const void *s1)
2988{
2989 target_ulong addr = *(target_ulong *)s0;
2990 struct elf_sym *sym = (struct elf_sym *)s1;
2991 int result = 0;
2992 if (addr < sym->st_value) {
2993 result = -1;
2994 } else if (addr >= sym->st_value + sym->st_size) {
2995 result = 1;
2996 }
2997 return result;
2998}
2999
3000static const char *lookup_symbolxx(struct syminfo *s, target_ulong orig_addr)
3001{
3002#if ELF_CLASS == ELFCLASS32
3003 struct elf_sym *syms = s->disas_symtab.elf32;
3004#else
3005 struct elf_sym *syms = s->disas_symtab.elf64;
3006#endif
3007
3008
3009 struct elf_sym *sym;
3010
3011 sym = bsearch(&orig_addr, syms, s->disas_num_syms, sizeof(*syms), symfind);
3012 if (sym != NULL) {
3013 return s->disas_strtab + sym->st_name;
3014 }
3015
3016 return "";
3017}
3018
3019
3020static int symcmp(const void *s0, const void *s1)
3021{
3022 struct elf_sym *sym0 = (struct elf_sym *)s0;
3023 struct elf_sym *sym1 = (struct elf_sym *)s1;
3024 return (sym0->st_value < sym1->st_value)
3025 ? -1
3026 : ((sym0->st_value > sym1->st_value) ? 1 : 0);
3027}
3028
3029
3030static void load_symbols(struct elfhdr *hdr, int fd, abi_ulong load_bias)
3031{
3032 int i, shnum, nsyms, sym_idx = 0, str_idx = 0;
3033 uint64_t segsz;
3034 struct elf_shdr *shdr;
3035 char *strings = NULL;
3036 struct syminfo *s = NULL;
3037 struct elf_sym *new_syms, *syms = NULL;
3038
3039 shnum = hdr->e_shnum;
3040 i = shnum * sizeof(struct elf_shdr);
3041 shdr = (struct elf_shdr *)alloca(i);
3042 if (pread(fd, shdr, i, hdr->e_shoff) != i) {
3043 return;
3044 }
3045
3046 bswap_shdr(shdr, shnum);
3047 for (i = 0; i < shnum; ++i) {
3048 if (shdr[i].sh_type == SHT_SYMTAB) {
3049 sym_idx = i;
3050 str_idx = shdr[i].sh_link;
3051 goto found;
3052 }
3053 }
3054
3055
3056 return;
3057
3058 found:
3059
3060 s = g_try_new(struct syminfo, 1);
3061 if (!s) {
3062 goto give_up;
3063 }
3064
3065 segsz = shdr[str_idx].sh_size;
3066 s->disas_strtab = strings = g_try_malloc(segsz);
3067 if (!strings ||
3068 pread(fd, strings, segsz, shdr[str_idx].sh_offset) != segsz) {
3069 goto give_up;
3070 }
3071
3072 segsz = shdr[sym_idx].sh_size;
3073 syms = g_try_malloc(segsz);
3074 if (!syms || pread(fd, syms, segsz, shdr[sym_idx].sh_offset) != segsz) {
3075 goto give_up;
3076 }
3077
3078 if (segsz / sizeof(struct elf_sym) > INT_MAX) {
3079
3080
3081
3082 goto give_up;
3083 }
3084 nsyms = segsz / sizeof(struct elf_sym);
3085 for (i = 0; i < nsyms; ) {
3086 bswap_sym(syms + i);
3087
3088 if (syms[i].st_shndx == SHN_UNDEF
3089 || syms[i].st_shndx >= SHN_LORESERVE
3090 || ELF_ST_TYPE(syms[i].st_info) != STT_FUNC) {
3091 if (i < --nsyms) {
3092 syms[i] = syms[nsyms];
3093 }
3094 } else {
3095#if defined(TARGET_ARM) || defined (TARGET_MIPS)
3096
3097 syms[i].st_value &= ~(target_ulong)1;
3098#endif
3099 syms[i].st_value += load_bias;
3100 i++;
3101 }
3102 }
3103
3104
3105 if (nsyms == 0) {
3106 goto give_up;
3107 }
3108
3109
3110
3111
3112
3113 new_syms = g_try_renew(struct elf_sym, syms, nsyms);
3114 if (new_syms == NULL) {
3115 goto give_up;
3116 }
3117 syms = new_syms;
3118
3119 qsort(syms, nsyms, sizeof(*syms), symcmp);
3120
3121 s->disas_num_syms = nsyms;
3122#if ELF_CLASS == ELFCLASS32
3123 s->disas_symtab.elf32 = syms;
3124#else
3125 s->disas_symtab.elf64 = syms;
3126#endif
3127 s->lookup_symbol = lookup_symbolxx;
3128 s->next = syminfos;
3129 syminfos = s;
3130
3131 return;
3132
3133give_up:
3134 g_free(s);
3135 g_free(strings);
3136 g_free(syms);
3137}
3138
3139uint32_t get_elf_eflags(int fd)
3140{
3141 struct elfhdr ehdr;
3142 off_t offset;
3143 int ret;
3144
3145
3146 offset = lseek(fd, 0, SEEK_SET);
3147 if (offset == (off_t) -1) {
3148 return 0;
3149 }
3150 ret = read(fd, &ehdr, sizeof(ehdr));
3151 if (ret < sizeof(ehdr)) {
3152 return 0;
3153 }
3154 offset = lseek(fd, offset, SEEK_SET);
3155 if (offset == (off_t) -1) {
3156 return 0;
3157 }
3158
3159
3160 if (!elf_check_ident(&ehdr)) {
3161 return 0;
3162 }
3163
3164
3165 bswap_ehdr(&ehdr);
3166 if (!elf_check_ehdr(&ehdr)) {
3167 return 0;
3168 }
3169
3170
3171 return ehdr.e_flags;
3172}
3173
3174int load_elf_binary(struct linux_binprm *bprm, struct image_info *info)
3175{
3176 struct image_info interp_info;
3177 struct elfhdr elf_ex;
3178 char *elf_interpreter = NULL;
3179 char *scratch;
3180
3181 memset(&interp_info, 0, sizeof(interp_info));
3182#ifdef TARGET_MIPS
3183 interp_info.fp_abi = MIPS_ABI_FP_UNKNOWN;
3184#endif
3185
3186 info->start_mmap = (abi_ulong)ELF_START_MMAP;
3187
3188 load_elf_image(bprm->filename, bprm->fd, info,
3189 &elf_interpreter, bprm->buf);
3190
3191
3192
3193
3194 elf_ex = *(struct elfhdr *)bprm->buf;
3195
3196
3197
3198 bprm->p = setup_arg_pages(bprm, info);
3199
3200 scratch = g_new0(char, TARGET_PAGE_SIZE);
3201 if (STACK_GROWS_DOWN) {
3202 bprm->p = copy_elf_strings(1, &bprm->filename, scratch,
3203 bprm->p, info->stack_limit);
3204 info->file_string = bprm->p;
3205 bprm->p = copy_elf_strings(bprm->envc, bprm->envp, scratch,
3206 bprm->p, info->stack_limit);
3207 info->env_strings = bprm->p;
3208 bprm->p = copy_elf_strings(bprm->argc, bprm->argv, scratch,
3209 bprm->p, info->stack_limit);
3210 info->arg_strings = bprm->p;
3211 } else {
3212 info->arg_strings = bprm->p;
3213 bprm->p = copy_elf_strings(bprm->argc, bprm->argv, scratch,
3214 bprm->p, info->stack_limit);
3215 info->env_strings = bprm->p;
3216 bprm->p = copy_elf_strings(bprm->envc, bprm->envp, scratch,
3217 bprm->p, info->stack_limit);
3218 info->file_string = bprm->p;
3219 bprm->p = copy_elf_strings(1, &bprm->filename, scratch,
3220 bprm->p, info->stack_limit);
3221 }
3222
3223 g_free(scratch);
3224
3225 if (!bprm->p) {
3226 fprintf(stderr, "%s: %s\n", bprm->filename, strerror(E2BIG));
3227 exit(-1);
3228 }
3229
3230 if (elf_interpreter) {
3231 load_elf_interp(elf_interpreter, &interp_info, bprm->buf);
3232
3233
3234
3235
3236 if (strcmp(elf_interpreter, "/usr/lib/libc.so.1") == 0
3237 || strcmp(elf_interpreter, "/usr/lib/ld.so.1") == 0) {
3238 info->personality = PER_SVR4;
3239
3240
3241
3242
3243
3244 target_mmap(0, qemu_host_page_size, PROT_READ | PROT_EXEC,
3245 MAP_FIXED | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3246 }
3247#ifdef TARGET_MIPS
3248 info->interp_fp_abi = interp_info.fp_abi;
3249#endif
3250 }
3251
3252
3253
3254
3255
3256 if (TARGET_ARCH_HAS_SIGTRAMP_PAGE) {
3257 abi_long tramp_page = target_mmap(0, TARGET_PAGE_SIZE,
3258 PROT_READ | PROT_WRITE,
3259 MAP_PRIVATE | MAP_ANON, -1, 0);
3260 if (tramp_page == -1) {
3261 return -errno;
3262 }
3263
3264 setup_sigtramp(tramp_page);
3265 target_mprotect(tramp_page, TARGET_PAGE_SIZE, PROT_READ | PROT_EXEC);
3266 }
3267
3268 bprm->p = create_elf_tables(bprm->p, bprm->argc, bprm->envc, &elf_ex,
3269 info, (elf_interpreter ? &interp_info : NULL));
3270 info->start_stack = bprm->p;
3271
3272
3273
3274
3275
3276 if (elf_interpreter) {
3277 info->load_bias = interp_info.load_bias;
3278 info->entry = interp_info.entry;
3279 g_free(elf_interpreter);
3280 }
3281
3282#ifdef USE_ELF_CORE_DUMP
3283 bprm->core_dump = &elf_core_dump;
3284#endif
3285
3286
3287
3288
3289
3290
3291 if (info->reserve_brk) {
3292 abi_ulong start_brk = HOST_PAGE_ALIGN(info->brk);
3293 abi_ulong end_brk = HOST_PAGE_ALIGN(info->brk + info->reserve_brk);
3294 target_munmap(start_brk, end_brk - start_brk);
3295 }
3296
3297 return 0;
3298}
3299
3300#ifdef USE_ELF_CORE_DUMP
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
3341struct memelfnote {
3342 const char *name;
3343 size_t namesz;
3344 size_t namesz_rounded;
3345 int type;
3346 size_t datasz;
3347 size_t datasz_rounded;
3348 void *data;
3349 size_t notesz;
3350};
3351
3352struct target_elf_siginfo {
3353 abi_int si_signo;
3354 abi_int si_code;
3355 abi_int si_errno;
3356};
3357
3358struct target_elf_prstatus {
3359 struct target_elf_siginfo pr_info;
3360 abi_short pr_cursig;
3361 abi_ulong pr_sigpend;
3362 abi_ulong pr_sighold;
3363 target_pid_t pr_pid;
3364 target_pid_t pr_ppid;
3365 target_pid_t pr_pgrp;
3366 target_pid_t pr_sid;
3367 struct target_timeval pr_utime;
3368 struct target_timeval pr_stime;
3369 struct target_timeval pr_cutime;
3370 struct target_timeval pr_cstime;
3371 target_elf_gregset_t pr_reg;
3372 abi_int pr_fpvalid;
3373};
3374
3375#define ELF_PRARGSZ (80)
3376
3377struct target_elf_prpsinfo {
3378 char pr_state;
3379 char pr_sname;
3380 char pr_zomb;
3381 char pr_nice;
3382 abi_ulong pr_flag;
3383 target_uid_t pr_uid;
3384 target_gid_t pr_gid;
3385 target_pid_t pr_pid, pr_ppid, pr_pgrp, pr_sid;
3386
3387 char pr_fname[16] QEMU_NONSTRING;
3388 char pr_psargs[ELF_PRARGSZ];
3389};
3390
3391
3392struct elf_thread_status {
3393 QTAILQ_ENTRY(elf_thread_status) ets_link;
3394 struct target_elf_prstatus prstatus;
3395#if 0
3396 elf_fpregset_t fpu;
3397 struct task_struct *thread;
3398 elf_fpxregset_t xfpu;
3399#endif
3400 struct memelfnote notes[1];
3401 int num_notes;
3402};
3403
3404struct elf_note_info {
3405 struct memelfnote *notes;
3406 struct target_elf_prstatus *prstatus;
3407 struct target_elf_prpsinfo *psinfo;
3408
3409 QTAILQ_HEAD(, elf_thread_status) thread_list;
3410#if 0
3411
3412
3413
3414
3415 elf_fpregset_t *fpu;
3416 elf_fpxregset_t *xfpu;
3417 int thread_status_size;
3418#endif
3419 int notes_size;
3420 int numnote;
3421};
3422
3423struct vm_area_struct {
3424 target_ulong vma_start;
3425 target_ulong vma_end;
3426 abi_ulong vma_flags;
3427 QTAILQ_ENTRY(vm_area_struct) vma_link;
3428};
3429
3430struct mm_struct {
3431 QTAILQ_HEAD(, vm_area_struct) mm_mmap;
3432 int mm_count;
3433};
3434
3435static struct mm_struct *vma_init(void);
3436static void vma_delete(struct mm_struct *);
3437static int vma_add_mapping(struct mm_struct *, target_ulong,
3438 target_ulong, abi_ulong);
3439static int vma_get_mapping_count(const struct mm_struct *);
3440static struct vm_area_struct *vma_first(const struct mm_struct *);
3441static struct vm_area_struct *vma_next(struct vm_area_struct *);
3442static abi_ulong vma_dump_size(const struct vm_area_struct *);
3443static int vma_walker(void *priv, target_ulong start, target_ulong end,
3444 unsigned long flags);
3445
3446static void fill_elf_header(struct elfhdr *, int, uint16_t, uint32_t);
3447static void fill_note(struct memelfnote *, const char *, int,
3448 unsigned int, void *);
3449static void fill_prstatus(struct target_elf_prstatus *, const TaskState *, int);
3450static int fill_psinfo(struct target_elf_prpsinfo *, const TaskState *);
3451static void fill_auxv_note(struct memelfnote *, const TaskState *);
3452static void fill_elf_note_phdr(struct elf_phdr *, int, off_t);
3453static size_t note_size(const struct memelfnote *);
3454static void free_note_info(struct elf_note_info *);
3455static int fill_note_info(struct elf_note_info *, long, const CPUArchState *);
3456static void fill_thread_info(struct elf_note_info *, const CPUArchState *);
3457
3458static int dump_write(int, const void *, size_t);
3459static int write_note(struct memelfnote *, int);
3460static int write_note_info(struct elf_note_info *, int);
3461
3462#ifdef BSWAP_NEEDED
3463static void bswap_prstatus(struct target_elf_prstatus *prstatus)
3464{
3465 prstatus->pr_info.si_signo = tswap32(prstatus->pr_info.si_signo);
3466 prstatus->pr_info.si_code = tswap32(prstatus->pr_info.si_code);
3467 prstatus->pr_info.si_errno = tswap32(prstatus->pr_info.si_errno);
3468 prstatus->pr_cursig = tswap16(prstatus->pr_cursig);
3469 prstatus->pr_sigpend = tswapal(prstatus->pr_sigpend);
3470 prstatus->pr_sighold = tswapal(prstatus->pr_sighold);
3471 prstatus->pr_pid = tswap32(prstatus->pr_pid);
3472 prstatus->pr_ppid = tswap32(prstatus->pr_ppid);
3473 prstatus->pr_pgrp = tswap32(prstatus->pr_pgrp);
3474 prstatus->pr_sid = tswap32(prstatus->pr_sid);
3475
3476
3477 prstatus->pr_fpvalid = tswap32(prstatus->pr_fpvalid);
3478}
3479
3480static void bswap_psinfo(struct target_elf_prpsinfo *psinfo)
3481{
3482 psinfo->pr_flag = tswapal(psinfo->pr_flag);
3483 psinfo->pr_uid = tswap16(psinfo->pr_uid);
3484 psinfo->pr_gid = tswap16(psinfo->pr_gid);
3485 psinfo->pr_pid = tswap32(psinfo->pr_pid);
3486 psinfo->pr_ppid = tswap32(psinfo->pr_ppid);
3487 psinfo->pr_pgrp = tswap32(psinfo->pr_pgrp);
3488 psinfo->pr_sid = tswap32(psinfo->pr_sid);
3489}
3490
3491static void bswap_note(struct elf_note *en)
3492{
3493 bswap32s(&en->n_namesz);
3494 bswap32s(&en->n_descsz);
3495 bswap32s(&en->n_type);
3496}
3497#else
3498static inline void bswap_prstatus(struct target_elf_prstatus *p) { }
3499static inline void bswap_psinfo(struct target_elf_prpsinfo *p) {}
3500static inline void bswap_note(struct elf_note *en) { }
3501#endif
3502
3503
3504
3505
3506
3507
3508
3509
3510static struct mm_struct *vma_init(void)
3511{
3512 struct mm_struct *mm;
3513
3514 if ((mm = g_malloc(sizeof (*mm))) == NULL)
3515 return (NULL);
3516
3517 mm->mm_count = 0;
3518 QTAILQ_INIT(&mm->mm_mmap);
3519
3520 return (mm);
3521}
3522
3523static void vma_delete(struct mm_struct *mm)
3524{
3525 struct vm_area_struct *vma;
3526
3527 while ((vma = vma_first(mm)) != NULL) {
3528 QTAILQ_REMOVE(&mm->mm_mmap, vma, vma_link);
3529 g_free(vma);
3530 }
3531 g_free(mm);
3532}
3533
3534static int vma_add_mapping(struct mm_struct *mm, target_ulong start,
3535 target_ulong end, abi_ulong flags)
3536{
3537 struct vm_area_struct *vma;
3538
3539 if ((vma = g_malloc0(sizeof (*vma))) == NULL)
3540 return (-1);
3541
3542 vma->vma_start = start;
3543 vma->vma_end = end;
3544 vma->vma_flags = flags;
3545
3546 QTAILQ_INSERT_TAIL(&mm->mm_mmap, vma, vma_link);
3547 mm->mm_count++;
3548
3549 return (0);
3550}
3551
3552static struct vm_area_struct *vma_first(const struct mm_struct *mm)
3553{
3554 return (QTAILQ_FIRST(&mm->mm_mmap));
3555}
3556
3557static struct vm_area_struct *vma_next(struct vm_area_struct *vma)
3558{
3559 return (QTAILQ_NEXT(vma, vma_link));
3560}
3561
3562static int vma_get_mapping_count(const struct mm_struct *mm)
3563{
3564 return (mm->mm_count);
3565}
3566
3567
3568
3569
3570static abi_ulong vma_dump_size(const struct vm_area_struct *vma)
3571{
3572
3573 if (!access_ok_untagged(VERIFY_READ, vma->vma_start, TARGET_PAGE_SIZE))
3574 return (0);
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584 if (vma->vma_flags & PROT_EXEC) {
3585 char page[TARGET_PAGE_SIZE];
3586
3587 if (copy_from_user(page, vma->vma_start, sizeof (page))) {
3588 return 0;
3589 }
3590 if ((page[EI_MAG0] == ELFMAG0) &&
3591 (page[EI_MAG1] == ELFMAG1) &&
3592 (page[EI_MAG2] == ELFMAG2) &&
3593 (page[EI_MAG3] == ELFMAG3)) {
3594
3595
3596
3597
3598 return (0);
3599 }
3600 }
3601
3602 return (vma->vma_end - vma->vma_start);
3603}
3604
3605static int vma_walker(void *priv, target_ulong start, target_ulong end,
3606 unsigned long flags)
3607{
3608 struct mm_struct *mm = (struct mm_struct *)priv;
3609
3610 vma_add_mapping(mm, start, end, flags);
3611 return (0);
3612}
3613
3614static void fill_note(struct memelfnote *note, const char *name, int type,
3615 unsigned int sz, void *data)
3616{
3617 unsigned int namesz;
3618
3619 namesz = strlen(name) + 1;
3620 note->name = name;
3621 note->namesz = namesz;
3622 note->namesz_rounded = roundup(namesz, sizeof (int32_t));
3623 note->type = type;
3624 note->datasz = sz;
3625 note->datasz_rounded = roundup(sz, sizeof (int32_t));
3626
3627 note->data = data;
3628
3629
3630
3631
3632
3633 note->notesz = sizeof (struct elf_note) +
3634 note->namesz_rounded + note->datasz_rounded;
3635}
3636
3637static void fill_elf_header(struct elfhdr *elf, int segs, uint16_t machine,
3638 uint32_t flags)
3639{
3640 (void) memset(elf, 0, sizeof(*elf));
3641
3642 (void) memcpy(elf->e_ident, ELFMAG, SELFMAG);
3643 elf->e_ident[EI_CLASS] = ELF_CLASS;
3644 elf->e_ident[EI_DATA] = ELF_DATA;
3645 elf->e_ident[EI_VERSION] = EV_CURRENT;
3646 elf->e_ident[EI_OSABI] = ELF_OSABI;
3647
3648 elf->e_type = ET_CORE;
3649 elf->e_machine = machine;
3650 elf->e_version = EV_CURRENT;
3651 elf->e_phoff = sizeof(struct elfhdr);
3652 elf->e_flags = flags;
3653 elf->e_ehsize = sizeof(struct elfhdr);
3654 elf->e_phentsize = sizeof(struct elf_phdr);
3655 elf->e_phnum = segs;
3656
3657 bswap_ehdr(elf);
3658}
3659
3660static void fill_elf_note_phdr(struct elf_phdr *phdr, int sz, off_t offset)
3661{
3662 phdr->p_type = PT_NOTE;
3663 phdr->p_offset = offset;
3664 phdr->p_vaddr = 0;
3665 phdr->p_paddr = 0;
3666 phdr->p_filesz = sz;
3667 phdr->p_memsz = 0;
3668 phdr->p_flags = 0;
3669 phdr->p_align = 0;
3670
3671 bswap_phdr(phdr, 1);
3672}
3673
3674static size_t note_size(const struct memelfnote *note)
3675{
3676 return (note->notesz);
3677}
3678
3679static void fill_prstatus(struct target_elf_prstatus *prstatus,
3680 const TaskState *ts, int signr)
3681{
3682 (void) memset(prstatus, 0, sizeof (*prstatus));
3683 prstatus->pr_info.si_signo = prstatus->pr_cursig = signr;
3684 prstatus->pr_pid = ts->ts_tid;
3685 prstatus->pr_ppid = getppid();
3686 prstatus->pr_pgrp = getpgrp();
3687 prstatus->pr_sid = getsid(0);
3688
3689 bswap_prstatus(prstatus);
3690}
3691
3692static int fill_psinfo(struct target_elf_prpsinfo *psinfo, const TaskState *ts)
3693{
3694 char *base_filename;
3695 unsigned int i, len;
3696
3697 (void) memset(psinfo, 0, sizeof (*psinfo));
3698
3699 len = ts->info->env_strings - ts->info->arg_strings;
3700 if (len >= ELF_PRARGSZ)
3701 len = ELF_PRARGSZ - 1;
3702 if (copy_from_user(&psinfo->pr_psargs, ts->info->arg_strings, len)) {
3703 return -EFAULT;
3704 }
3705 for (i = 0; i < len; i++)
3706 if (psinfo->pr_psargs[i] == 0)
3707 psinfo->pr_psargs[i] = ' ';
3708 psinfo->pr_psargs[len] = 0;
3709
3710 psinfo->pr_pid = getpid();
3711 psinfo->pr_ppid = getppid();
3712 psinfo->pr_pgrp = getpgrp();
3713 psinfo->pr_sid = getsid(0);
3714 psinfo->pr_uid = getuid();
3715 psinfo->pr_gid = getgid();
3716
3717 base_filename = g_path_get_basename(ts->bprm->filename);
3718
3719
3720
3721
3722 (void) strncpy(psinfo->pr_fname, base_filename,
3723 sizeof(psinfo->pr_fname));
3724
3725 g_free(base_filename);
3726 bswap_psinfo(psinfo);
3727 return (0);
3728}
3729
3730static void fill_auxv_note(struct memelfnote *note, const TaskState *ts)
3731{
3732 elf_addr_t auxv = (elf_addr_t)ts->info->saved_auxv;
3733 elf_addr_t orig_auxv = auxv;
3734 void *ptr;
3735 int len = ts->info->auxv_len;
3736
3737
3738
3739
3740
3741
3742
3743
3744 ptr = lock_user(VERIFY_READ, orig_auxv, len, 0);
3745 if (ptr != NULL) {
3746 fill_note(note, "CORE", NT_AUXV, len, ptr);
3747 unlock_user(ptr, auxv, len);
3748 }
3749}
3750
3751
3752
3753
3754
3755
3756
3757
3758static char *core_dump_filename(const TaskState *ts)
3759{
3760 g_autoptr(GDateTime) now = g_date_time_new_now_local();
3761 g_autofree char *nowstr = g_date_time_format(now, "%Y%m%d-%H%M%S");
3762 g_autofree char *base_filename = g_path_get_basename(ts->bprm->filename);
3763
3764 return g_strdup_printf("qemu_%s_%s_%d.core",
3765 base_filename, nowstr, (int)getpid());
3766}
3767
3768static int dump_write(int fd, const void *ptr, size_t size)
3769{
3770 const char *bufp = (const char *)ptr;
3771 ssize_t bytes_written, bytes_left;
3772 struct rlimit dumpsize;
3773 off_t pos;
3774
3775 bytes_written = 0;
3776 getrlimit(RLIMIT_CORE, &dumpsize);
3777 if ((pos = lseek(fd, 0, SEEK_CUR))==-1) {
3778 if (errno == ESPIPE) {
3779 bytes_left = size;
3780 } else {
3781 return pos;
3782 }
3783 } else {
3784 if (dumpsize.rlim_cur <= pos) {
3785 return -1;
3786 } else if (dumpsize.rlim_cur == RLIM_INFINITY) {
3787 bytes_left = size;
3788 } else {
3789 size_t limit_left=dumpsize.rlim_cur - pos;
3790 bytes_left = limit_left >= size ? size : limit_left ;
3791 }
3792 }
3793
3794
3795
3796
3797
3798 do {
3799 bytes_written = write(fd, bufp, bytes_left);
3800 if (bytes_written < 0) {
3801 if (errno == EINTR)
3802 continue;
3803 return (-1);
3804 } else if (bytes_written == 0) {
3805 return (-1);
3806 }
3807 bufp += bytes_written;
3808 bytes_left -= bytes_written;
3809 } while (bytes_left > 0);
3810
3811 return (0);
3812}
3813
3814static int write_note(struct memelfnote *men, int fd)
3815{
3816 struct elf_note en;
3817
3818 en.n_namesz = men->namesz;
3819 en.n_type = men->type;
3820 en.n_descsz = men->datasz;
3821
3822 bswap_note(&en);
3823
3824 if (dump_write(fd, &en, sizeof(en)) != 0)
3825 return (-1);
3826 if (dump_write(fd, men->name, men->namesz_rounded) != 0)
3827 return (-1);
3828 if (dump_write(fd, men->data, men->datasz_rounded) != 0)
3829 return (-1);
3830
3831 return (0);
3832}
3833
3834static void fill_thread_info(struct elf_note_info *info, const CPUArchState *env)
3835{
3836 CPUState *cpu = env_cpu((CPUArchState *)env);
3837 TaskState *ts = (TaskState *)cpu->opaque;
3838 struct elf_thread_status *ets;
3839
3840 ets = g_malloc0(sizeof (*ets));
3841 ets->num_notes = 1;
3842 fill_prstatus(&ets->prstatus, ts, 0);
3843 elf_core_copy_regs(&ets->prstatus.pr_reg, env);
3844 fill_note(&ets->notes[0], "CORE", NT_PRSTATUS, sizeof (ets->prstatus),
3845 &ets->prstatus);
3846
3847 QTAILQ_INSERT_TAIL(&info->thread_list, ets, ets_link);
3848
3849 info->notes_size += note_size(&ets->notes[0]);
3850}
3851
3852static void init_note_info(struct elf_note_info *info)
3853{
3854
3855
3856
3857
3858 memset(info, 0, sizeof (*info));
3859 QTAILQ_INIT(&info->thread_list);
3860}
3861
3862static int fill_note_info(struct elf_note_info *info,
3863 long signr, const CPUArchState *env)
3864{
3865#define NUMNOTES 3
3866 CPUState *cpu = env_cpu((CPUArchState *)env);
3867 TaskState *ts = (TaskState *)cpu->opaque;
3868 int i;
3869
3870 info->notes = g_new0(struct memelfnote, NUMNOTES);
3871 if (info->notes == NULL)
3872 return (-ENOMEM);
3873 info->prstatus = g_malloc0(sizeof (*info->prstatus));
3874 if (info->prstatus == NULL)
3875 return (-ENOMEM);
3876 info->psinfo = g_malloc0(sizeof (*info->psinfo));
3877 if (info->prstatus == NULL)
3878 return (-ENOMEM);
3879
3880
3881
3882
3883
3884 fill_prstatus(info->prstatus, ts, signr);
3885 elf_core_copy_regs(&info->prstatus->pr_reg, env);
3886 fill_note(&info->notes[0], "CORE", NT_PRSTATUS,
3887 sizeof (*info->prstatus), info->prstatus);
3888 fill_psinfo(info->psinfo, ts);
3889 fill_note(&info->notes[1], "CORE", NT_PRPSINFO,
3890 sizeof (*info->psinfo), info->psinfo);
3891 fill_auxv_note(&info->notes[2], ts);
3892 info->numnote = 3;
3893
3894 info->notes_size = 0;
3895 for (i = 0; i < info->numnote; i++)
3896 info->notes_size += note_size(&info->notes[i]);
3897
3898
3899 cpu_list_lock();
3900 CPU_FOREACH(cpu) {
3901 if (cpu == thread_cpu) {
3902 continue;
3903 }
3904 fill_thread_info(info, (CPUArchState *)cpu->env_ptr);
3905 }
3906 cpu_list_unlock();
3907
3908 return (0);
3909}
3910
3911static void free_note_info(struct elf_note_info *info)
3912{
3913 struct elf_thread_status *ets;
3914
3915 while (!QTAILQ_EMPTY(&info->thread_list)) {
3916 ets = QTAILQ_FIRST(&info->thread_list);
3917 QTAILQ_REMOVE(&info->thread_list, ets, ets_link);
3918 g_free(ets);
3919 }
3920
3921 g_free(info->prstatus);
3922 g_free(info->psinfo);
3923 g_free(info->notes);
3924}
3925
3926static int write_note_info(struct elf_note_info *info, int fd)
3927{
3928 struct elf_thread_status *ets;
3929 int i, error = 0;
3930
3931
3932 for (i = 0; i < info->numnote; i++)
3933 if ((error = write_note(&info->notes[i], fd)) != 0)
3934 return (error);
3935
3936
3937 QTAILQ_FOREACH(ets, &info->thread_list, ets_link) {
3938 if ((error = write_note(&ets->notes[0], fd)) != 0)
3939 return (error);
3940 }
3941
3942 return (0);
3943}
3944
3945
3946
3947
3948
3949
3950
3951
3952
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988static int elf_core_dump(int signr, const CPUArchState *env)
3989{
3990 const CPUState *cpu = env_cpu((CPUArchState *)env);
3991 const TaskState *ts = (const TaskState *)cpu->opaque;
3992 struct vm_area_struct *vma = NULL;
3993 g_autofree char *corefile = NULL;
3994 struct elf_note_info info;
3995 struct elfhdr elf;
3996 struct elf_phdr phdr;
3997 struct rlimit dumpsize;
3998 struct mm_struct *mm = NULL;
3999 off_t offset = 0, data_offset = 0;
4000 int segs = 0;
4001 int fd = -1;
4002
4003 init_note_info(&info);
4004
4005 errno = 0;
4006 getrlimit(RLIMIT_CORE, &dumpsize);
4007 if (dumpsize.rlim_cur == 0)
4008 return 0;
4009
4010 corefile = core_dump_filename(ts);
4011
4012 if ((fd = open(corefile, O_WRONLY | O_CREAT,
4013 S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH)) < 0)
4014 return (-errno);
4015
4016
4017
4018
4019
4020
4021 if ((mm = vma_init()) == NULL)
4022 goto out;
4023
4024 walk_memory_regions(mm, vma_walker);
4025 segs = vma_get_mapping_count(mm);
4026
4027
4028
4029
4030
4031 fill_elf_header(&elf, segs + 1, ELF_MACHINE, 0);
4032 if (dump_write(fd, &elf, sizeof (elf)) != 0)
4033 goto out;
4034
4035
4036 if (fill_note_info(&info, signr, env) < 0)
4037 goto out;
4038
4039 offset += sizeof (elf);
4040 offset += (segs + 1) * sizeof (struct elf_phdr);
4041
4042
4043 fill_elf_note_phdr(&phdr, info.notes_size, offset);
4044
4045 offset += info.notes_size;
4046 if (dump_write(fd, &phdr, sizeof (phdr)) != 0)
4047 goto out;
4048
4049
4050
4051
4052
4053 data_offset = offset = roundup(offset, ELF_EXEC_PAGESIZE);
4054
4055
4056
4057
4058
4059 for (vma = vma_first(mm); vma != NULL; vma = vma_next(vma)) {
4060 (void) memset(&phdr, 0, sizeof (phdr));
4061
4062 phdr.p_type = PT_LOAD;
4063 phdr.p_offset = offset;
4064 phdr.p_vaddr = vma->vma_start;
4065 phdr.p_paddr = 0;
4066 phdr.p_filesz = vma_dump_size(vma);
4067 offset += phdr.p_filesz;
4068 phdr.p_memsz = vma->vma_end - vma->vma_start;
4069 phdr.p_flags = vma->vma_flags & PROT_READ ? PF_R : 0;
4070 if (vma->vma_flags & PROT_WRITE)
4071 phdr.p_flags |= PF_W;
4072 if (vma->vma_flags & PROT_EXEC)
4073 phdr.p_flags |= PF_X;
4074 phdr.p_align = ELF_EXEC_PAGESIZE;
4075
4076 bswap_phdr(&phdr, 1);
4077 if (dump_write(fd, &phdr, sizeof(phdr)) != 0) {
4078 goto out;
4079 }
4080 }
4081
4082
4083
4084
4085
4086 if (write_note_info(&info, fd) < 0)
4087 goto out;
4088
4089
4090 if (lseek(fd, data_offset, SEEK_SET) != data_offset)
4091 goto out;
4092
4093
4094
4095
4096 for (vma = vma_first(mm); vma != NULL; vma = vma_next(vma)) {
4097 abi_ulong addr;
4098 abi_ulong end;
4099
4100 end = vma->vma_start + vma_dump_size(vma);
4101
4102 for (addr = vma->vma_start; addr < end;
4103 addr += TARGET_PAGE_SIZE) {
4104 char page[TARGET_PAGE_SIZE];
4105 int error;
4106
4107
4108
4109
4110
4111 error = copy_from_user(page, addr, sizeof (page));
4112 if (error != 0) {
4113 (void) fprintf(stderr, "unable to dump " TARGET_ABI_FMT_lx "\n",
4114 addr);
4115 errno = -error;
4116 goto out;
4117 }
4118 if (dump_write(fd, page, TARGET_PAGE_SIZE) < 0)
4119 goto out;
4120 }
4121 }
4122
4123 out:
4124 free_note_info(&info);
4125 if (mm != NULL)
4126 vma_delete(mm);
4127 (void) close(fd);
4128
4129 if (errno != 0)
4130 return (-errno);
4131 return (0);
4132}
4133#endif
4134
4135void do_init_thread(struct target_pt_regs *regs, struct image_info *infop)
4136{
4137 init_thread(regs, infop);
4138}
4139