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 "disas/disas.h"
10#include "qemu/bitops.h"
11#include "qemu/path.h"
12#include "qemu/queue.h"
13#include "qemu/guest-random.h"
14#include "qemu/units.h"
15#include "qemu/selfmap.h"
16#include "qapi/error.h"
17
18#ifdef _ARCH_PPC64
19#undef ARCH_DLINFO
20#undef ELF_PLATFORM
21#undef ELF_HWCAP
22#undef ELF_HWCAP2
23#undef ELF_CLASS
24#undef ELF_DATA
25#undef ELF_ARCH
26#endif
27
28#define ELF_OSABI ELFOSABI_SYSV
29
30
31
32
33
34
35
36
37enum {
38 ADDR_NO_RANDOMIZE = 0x0040000,
39 FDPIC_FUNCPTRS = 0x0080000,
40
41 MMAP_PAGE_ZERO = 0x0100000,
42 ADDR_COMPAT_LAYOUT = 0x0200000,
43 READ_IMPLIES_EXEC = 0x0400000,
44 ADDR_LIMIT_32BIT = 0x0800000,
45 SHORT_INODE = 0x1000000,
46 WHOLE_SECONDS = 0x2000000,
47 STICKY_TIMEOUTS = 0x4000000,
48 ADDR_LIMIT_3GB = 0x8000000,
49};
50
51
52
53
54
55
56
57enum {
58 PER_LINUX = 0x0000,
59 PER_LINUX_32BIT = 0x0000 | ADDR_LIMIT_32BIT,
60 PER_LINUX_FDPIC = 0x0000 | FDPIC_FUNCPTRS,
61 PER_SVR4 = 0x0001 | STICKY_TIMEOUTS | MMAP_PAGE_ZERO,
62 PER_SVR3 = 0x0002 | STICKY_TIMEOUTS | SHORT_INODE,
63 PER_SCOSVR3 = 0x0003 | STICKY_TIMEOUTS | WHOLE_SECONDS | SHORT_INODE,
64 PER_OSR5 = 0x0003 | STICKY_TIMEOUTS | WHOLE_SECONDS,
65 PER_WYSEV386 = 0x0004 | STICKY_TIMEOUTS | SHORT_INODE,
66 PER_ISCR4 = 0x0005 | STICKY_TIMEOUTS,
67 PER_BSD = 0x0006,
68 PER_SUNOS = 0x0006 | STICKY_TIMEOUTS,
69 PER_XENIX = 0x0007 | STICKY_TIMEOUTS | SHORT_INODE,
70 PER_LINUX32 = 0x0008,
71 PER_LINUX32_3GB = 0x0008 | ADDR_LIMIT_3GB,
72 PER_IRIX32 = 0x0009 | STICKY_TIMEOUTS,
73 PER_IRIXN32 = 0x000a | STICKY_TIMEOUTS,
74 PER_IRIX64 = 0x000b | STICKY_TIMEOUTS,
75 PER_RISCOS = 0x000c,
76 PER_SOLARIS = 0x000d | STICKY_TIMEOUTS,
77 PER_UW7 = 0x000e | STICKY_TIMEOUTS | MMAP_PAGE_ZERO,
78 PER_OSF4 = 0x000f,
79 PER_HPUX = 0x0010,
80 PER_MASK = 0x00ff,
81};
82
83
84
85
86#define personality(pers) (pers & PER_MASK)
87
88int info_is_fdpic(struct image_info *info)
89{
90 return info->personality == PER_LINUX_FDPIC;
91}
92
93
94#ifndef MAP_DENYWRITE
95#define MAP_DENYWRITE 0
96#endif
97
98
99#ifndef ELIBBAD
100#define ELIBBAD 80
101#endif
102
103#ifdef TARGET_WORDS_BIGENDIAN
104#define ELF_DATA ELFDATA2MSB
105#else
106#define ELF_DATA ELFDATA2LSB
107#endif
108
109#ifdef TARGET_ABI_MIPSN32
110typedef abi_ullong target_elf_greg_t;
111#define tswapreg(ptr) tswap64(ptr)
112#else
113typedef abi_ulong target_elf_greg_t;
114#define tswapreg(ptr) tswapal(ptr)
115#endif
116
117#ifdef USE_UID16
118typedef abi_ushort target_uid_t;
119typedef abi_ushort target_gid_t;
120#else
121typedef abi_uint target_uid_t;
122typedef abi_uint target_gid_t;
123#endif
124typedef abi_int target_pid_t;
125
126#ifdef TARGET_I386
127
128#define ELF_PLATFORM get_elf_platform()
129
130static const char *get_elf_platform(void)
131{
132 static char elf_platform[] = "i386";
133 int family = object_property_get_int(OBJECT(thread_cpu), "family", NULL);
134 if (family > 6)
135 family = 6;
136 if (family >= 3)
137 elf_platform[1] = '0' + family;
138 return elf_platform;
139}
140
141#define ELF_HWCAP get_elf_hwcap()
142
143static uint32_t get_elf_hwcap(void)
144{
145 X86CPU *cpu = X86_CPU(thread_cpu);
146
147 return cpu->env.features[FEAT_1_EDX];
148}
149
150#ifdef TARGET_X86_64
151#define ELF_START_MMAP 0x2aaaaab000ULL
152
153#define ELF_CLASS ELFCLASS64
154#define ELF_ARCH EM_X86_64
155
156static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
157{
158 regs->rax = 0;
159 regs->rsp = infop->start_stack;
160 regs->rip = infop->entry;
161}
162
163#define ELF_NREG 27
164typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
165
166
167
168
169
170
171
172
173static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUX86State *env)
174{
175 (*regs)[0] = env->regs[15];
176 (*regs)[1] = env->regs[14];
177 (*regs)[2] = env->regs[13];
178 (*regs)[3] = env->regs[12];
179 (*regs)[4] = env->regs[R_EBP];
180 (*regs)[5] = env->regs[R_EBX];
181 (*regs)[6] = env->regs[11];
182 (*regs)[7] = env->regs[10];
183 (*regs)[8] = env->regs[9];
184 (*regs)[9] = env->regs[8];
185 (*regs)[10] = env->regs[R_EAX];
186 (*regs)[11] = env->regs[R_ECX];
187 (*regs)[12] = env->regs[R_EDX];
188 (*regs)[13] = env->regs[R_ESI];
189 (*regs)[14] = env->regs[R_EDI];
190 (*regs)[15] = env->regs[R_EAX];
191 (*regs)[16] = env->eip;
192 (*regs)[17] = env->segs[R_CS].selector & 0xffff;
193 (*regs)[18] = env->eflags;
194 (*regs)[19] = env->regs[R_ESP];
195 (*regs)[20] = env->segs[R_SS].selector & 0xffff;
196 (*regs)[21] = env->segs[R_FS].selector & 0xffff;
197 (*regs)[22] = env->segs[R_GS].selector & 0xffff;
198 (*regs)[23] = env->segs[R_DS].selector & 0xffff;
199 (*regs)[24] = env->segs[R_ES].selector & 0xffff;
200 (*regs)[25] = env->segs[R_FS].selector & 0xffff;
201 (*regs)[26] = env->segs[R_GS].selector & 0xffff;
202}
203
204#else
205
206#define ELF_START_MMAP 0x80000000
207
208
209
210
211#define elf_check_arch(x) ( ((x) == EM_386) || ((x) == EM_486) )
212
213
214
215
216#define ELF_CLASS ELFCLASS32
217#define ELF_ARCH EM_386
218
219static inline void init_thread(struct target_pt_regs *regs,
220 struct image_info *infop)
221{
222 regs->esp = infop->start_stack;
223 regs->eip = infop->entry;
224
225
226
227
228
229
230
231
232 regs->edx = 0;
233}
234
235#define ELF_NREG 17
236typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
237
238
239
240
241
242
243
244
245static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUX86State *env)
246{
247 (*regs)[0] = env->regs[R_EBX];
248 (*regs)[1] = env->regs[R_ECX];
249 (*regs)[2] = env->regs[R_EDX];
250 (*regs)[3] = env->regs[R_ESI];
251 (*regs)[4] = env->regs[R_EDI];
252 (*regs)[5] = env->regs[R_EBP];
253 (*regs)[6] = env->regs[R_EAX];
254 (*regs)[7] = env->segs[R_DS].selector & 0xffff;
255 (*regs)[8] = env->segs[R_ES].selector & 0xffff;
256 (*regs)[9] = env->segs[R_FS].selector & 0xffff;
257 (*regs)[10] = env->segs[R_GS].selector & 0xffff;
258 (*regs)[11] = env->regs[R_EAX];
259 (*regs)[12] = env->eip;
260 (*regs)[13] = env->segs[R_CS].selector & 0xffff;
261 (*regs)[14] = env->eflags;
262 (*regs)[15] = env->regs[R_ESP];
263 (*regs)[16] = env->segs[R_SS].selector & 0xffff;
264}
265#endif
266
267#define USE_ELF_CORE_DUMP
268#define ELF_EXEC_PAGESIZE 4096
269
270#endif
271
272#ifdef TARGET_ARM
273
274#ifndef TARGET_AARCH64
275
276
277#define ELF_START_MMAP 0x80000000
278
279#define ELF_ARCH EM_ARM
280#define ELF_CLASS ELFCLASS32
281
282static inline void init_thread(struct target_pt_regs *regs,
283 struct image_info *infop)
284{
285 abi_long stack = infop->start_stack;
286 memset(regs, 0, sizeof(*regs));
287
288 regs->uregs[16] = ARM_CPU_MODE_USR;
289 if (infop->entry & 1) {
290 regs->uregs[16] |= CPSR_T;
291 }
292 regs->uregs[15] = infop->entry & 0xfffffffe;
293 regs->uregs[13] = infop->start_stack;
294
295 get_user_ual(regs->uregs[2], stack + 8);
296 get_user_ual(regs->uregs[1], stack + 4);
297
298 regs->uregs[0] = 0;
299
300
301 regs->uregs[10] = infop->start_data;
302
303
304 if (info_is_fdpic(infop)) {
305
306
307
308
309
310
311 regs->uregs[7] = infop->loadmap_addr;
312 if (infop->interpreter_loadmap_addr) {
313
314 regs->uregs[8] = infop->interpreter_loadmap_addr;
315 regs->uregs[9] = infop->interpreter_pt_dynamic_addr;
316 } else {
317 regs->uregs[8] = 0;
318 regs->uregs[9] = infop->pt_dynamic_addr;
319 }
320 }
321}
322
323#define ELF_NREG 18
324typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
325
326static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUARMState *env)
327{
328 (*regs)[0] = tswapreg(env->regs[0]);
329 (*regs)[1] = tswapreg(env->regs[1]);
330 (*regs)[2] = tswapreg(env->regs[2]);
331 (*regs)[3] = tswapreg(env->regs[3]);
332 (*regs)[4] = tswapreg(env->regs[4]);
333 (*regs)[5] = tswapreg(env->regs[5]);
334 (*regs)[6] = tswapreg(env->regs[6]);
335 (*regs)[7] = tswapreg(env->regs[7]);
336 (*regs)[8] = tswapreg(env->regs[8]);
337 (*regs)[9] = tswapreg(env->regs[9]);
338 (*regs)[10] = tswapreg(env->regs[10]);
339 (*regs)[11] = tswapreg(env->regs[11]);
340 (*regs)[12] = tswapreg(env->regs[12]);
341 (*regs)[13] = tswapreg(env->regs[13]);
342 (*regs)[14] = tswapreg(env->regs[14]);
343 (*regs)[15] = tswapreg(env->regs[15]);
344
345 (*regs)[16] = tswapreg(cpsr_read((CPUARMState *)env));
346 (*regs)[17] = tswapreg(env->regs[0]);
347}
348
349#define USE_ELF_CORE_DUMP
350#define ELF_EXEC_PAGESIZE 4096
351
352enum
353{
354 ARM_HWCAP_ARM_SWP = 1 << 0,
355 ARM_HWCAP_ARM_HALF = 1 << 1,
356 ARM_HWCAP_ARM_THUMB = 1 << 2,
357 ARM_HWCAP_ARM_26BIT = 1 << 3,
358 ARM_HWCAP_ARM_FAST_MULT = 1 << 4,
359 ARM_HWCAP_ARM_FPA = 1 << 5,
360 ARM_HWCAP_ARM_VFP = 1 << 6,
361 ARM_HWCAP_ARM_EDSP = 1 << 7,
362 ARM_HWCAP_ARM_JAVA = 1 << 8,
363 ARM_HWCAP_ARM_IWMMXT = 1 << 9,
364 ARM_HWCAP_ARM_CRUNCH = 1 << 10,
365 ARM_HWCAP_ARM_THUMBEE = 1 << 11,
366 ARM_HWCAP_ARM_NEON = 1 << 12,
367 ARM_HWCAP_ARM_VFPv3 = 1 << 13,
368 ARM_HWCAP_ARM_VFPv3D16 = 1 << 14,
369 ARM_HWCAP_ARM_TLS = 1 << 15,
370 ARM_HWCAP_ARM_VFPv4 = 1 << 16,
371 ARM_HWCAP_ARM_IDIVA = 1 << 17,
372 ARM_HWCAP_ARM_IDIVT = 1 << 18,
373 ARM_HWCAP_ARM_VFPD32 = 1 << 19,
374 ARM_HWCAP_ARM_LPAE = 1 << 20,
375 ARM_HWCAP_ARM_EVTSTRM = 1 << 21,
376};
377
378enum {
379 ARM_HWCAP2_ARM_AES = 1 << 0,
380 ARM_HWCAP2_ARM_PMULL = 1 << 1,
381 ARM_HWCAP2_ARM_SHA1 = 1 << 2,
382 ARM_HWCAP2_ARM_SHA2 = 1 << 3,
383 ARM_HWCAP2_ARM_CRC32 = 1 << 4,
384};
385
386
387
388#define ARM_COMMPAGE (intptr_t)0xffff0f00u
389
390static bool init_guest_commpage(void)
391{
392 void *want = g2h_untagged(ARM_COMMPAGE & -qemu_host_page_size);
393 void *addr = mmap(want, qemu_host_page_size, PROT_READ | PROT_WRITE,
394 MAP_ANONYMOUS | MAP_PRIVATE | MAP_FIXED, -1, 0);
395
396 if (addr == MAP_FAILED) {
397 perror("Allocating guest commpage");
398 exit(EXIT_FAILURE);
399 }
400 if (addr != want) {
401 return false;
402 }
403
404
405 __put_user(5, (uint32_t *)g2h_untagged(0xffff0ffcu));
406
407 if (mprotect(addr, qemu_host_page_size, PROT_READ)) {
408 perror("Protecting guest commpage");
409 exit(EXIT_FAILURE);
410 }
411 return true;
412}
413
414#define ELF_HWCAP get_elf_hwcap()
415#define ELF_HWCAP2 get_elf_hwcap2()
416
417static uint32_t get_elf_hwcap(void)
418{
419 ARMCPU *cpu = ARM_CPU(thread_cpu);
420 uint32_t hwcaps = 0;
421
422 hwcaps |= ARM_HWCAP_ARM_SWP;
423 hwcaps |= ARM_HWCAP_ARM_HALF;
424 hwcaps |= ARM_HWCAP_ARM_THUMB;
425 hwcaps |= ARM_HWCAP_ARM_FAST_MULT;
426
427
428#define GET_FEATURE(feat, hwcap) \
429 do { if (arm_feature(&cpu->env, feat)) { hwcaps |= hwcap; } } while (0)
430
431#define GET_FEATURE_ID(feat, hwcap) \
432 do { if (cpu_isar_feature(feat, cpu)) { hwcaps |= hwcap; } } while (0)
433
434
435 GET_FEATURE(ARM_FEATURE_V5, ARM_HWCAP_ARM_EDSP);
436 GET_FEATURE(ARM_FEATURE_IWMMXT, ARM_HWCAP_ARM_IWMMXT);
437 GET_FEATURE(ARM_FEATURE_THUMB2EE, ARM_HWCAP_ARM_THUMBEE);
438 GET_FEATURE(ARM_FEATURE_NEON, ARM_HWCAP_ARM_NEON);
439 GET_FEATURE(ARM_FEATURE_V6K, ARM_HWCAP_ARM_TLS);
440 GET_FEATURE(ARM_FEATURE_LPAE, ARM_HWCAP_ARM_LPAE);
441 GET_FEATURE_ID(aa32_arm_div, ARM_HWCAP_ARM_IDIVA);
442 GET_FEATURE_ID(aa32_thumb_div, ARM_HWCAP_ARM_IDIVT);
443 GET_FEATURE_ID(aa32_vfp, ARM_HWCAP_ARM_VFP);
444
445 if (cpu_isar_feature(aa32_fpsp_v3, cpu) ||
446 cpu_isar_feature(aa32_fpdp_v3, cpu)) {
447 hwcaps |= ARM_HWCAP_ARM_VFPv3;
448 if (cpu_isar_feature(aa32_simd_r32, cpu)) {
449 hwcaps |= ARM_HWCAP_ARM_VFPD32;
450 } else {
451 hwcaps |= ARM_HWCAP_ARM_VFPv3D16;
452 }
453 }
454 GET_FEATURE_ID(aa32_simdfmac, ARM_HWCAP_ARM_VFPv4);
455
456 return hwcaps;
457}
458
459static uint32_t get_elf_hwcap2(void)
460{
461 ARMCPU *cpu = ARM_CPU(thread_cpu);
462 uint32_t hwcaps = 0;
463
464 GET_FEATURE_ID(aa32_aes, ARM_HWCAP2_ARM_AES);
465 GET_FEATURE_ID(aa32_pmull, ARM_HWCAP2_ARM_PMULL);
466 GET_FEATURE_ID(aa32_sha1, ARM_HWCAP2_ARM_SHA1);
467 GET_FEATURE_ID(aa32_sha2, ARM_HWCAP2_ARM_SHA2);
468 GET_FEATURE_ID(aa32_crc32, ARM_HWCAP2_ARM_CRC32);
469 return hwcaps;
470}
471
472#undef GET_FEATURE
473#undef GET_FEATURE_ID
474
475#define ELF_PLATFORM get_elf_platform()
476
477static const char *get_elf_platform(void)
478{
479 CPUARMState *env = thread_cpu->env_ptr;
480
481#ifdef TARGET_WORDS_BIGENDIAN
482# define END "b"
483#else
484# define END "l"
485#endif
486
487 if (arm_feature(env, ARM_FEATURE_V8)) {
488 return "v8" END;
489 } else if (arm_feature(env, ARM_FEATURE_V7)) {
490 if (arm_feature(env, ARM_FEATURE_M)) {
491 return "v7m" END;
492 } else {
493 return "v7" END;
494 }
495 } else if (arm_feature(env, ARM_FEATURE_V6)) {
496 return "v6" END;
497 } else if (arm_feature(env, ARM_FEATURE_V5)) {
498 return "v5" END;
499 } else {
500 return "v4" END;
501 }
502
503#undef END
504}
505
506#else
507
508#define ELF_START_MMAP 0x80000000
509
510#define ELF_ARCH EM_AARCH64
511#define ELF_CLASS ELFCLASS64
512#ifdef TARGET_WORDS_BIGENDIAN
513# define ELF_PLATFORM "aarch64_be"
514#else
515# define ELF_PLATFORM "aarch64"
516#endif
517
518static inline void init_thread(struct target_pt_regs *regs,
519 struct image_info *infop)
520{
521 abi_long stack = infop->start_stack;
522 memset(regs, 0, sizeof(*regs));
523
524 regs->pc = infop->entry & ~0x3ULL;
525 regs->sp = stack;
526}
527
528#define ELF_NREG 34
529typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
530
531static void elf_core_copy_regs(target_elf_gregset_t *regs,
532 const CPUARMState *env)
533{
534 int i;
535
536 for (i = 0; i < 32; i++) {
537 (*regs)[i] = tswapreg(env->xregs[i]);
538 }
539 (*regs)[32] = tswapreg(env->pc);
540 (*regs)[33] = tswapreg(pstate_read((CPUARMState *)env));
541}
542
543#define USE_ELF_CORE_DUMP
544#define ELF_EXEC_PAGESIZE 4096
545
546enum {
547 ARM_HWCAP_A64_FP = 1 << 0,
548 ARM_HWCAP_A64_ASIMD = 1 << 1,
549 ARM_HWCAP_A64_EVTSTRM = 1 << 2,
550 ARM_HWCAP_A64_AES = 1 << 3,
551 ARM_HWCAP_A64_PMULL = 1 << 4,
552 ARM_HWCAP_A64_SHA1 = 1 << 5,
553 ARM_HWCAP_A64_SHA2 = 1 << 6,
554 ARM_HWCAP_A64_CRC32 = 1 << 7,
555 ARM_HWCAP_A64_ATOMICS = 1 << 8,
556 ARM_HWCAP_A64_FPHP = 1 << 9,
557 ARM_HWCAP_A64_ASIMDHP = 1 << 10,
558 ARM_HWCAP_A64_CPUID = 1 << 11,
559 ARM_HWCAP_A64_ASIMDRDM = 1 << 12,
560 ARM_HWCAP_A64_JSCVT = 1 << 13,
561 ARM_HWCAP_A64_FCMA = 1 << 14,
562 ARM_HWCAP_A64_LRCPC = 1 << 15,
563 ARM_HWCAP_A64_DCPOP = 1 << 16,
564 ARM_HWCAP_A64_SHA3 = 1 << 17,
565 ARM_HWCAP_A64_SM3 = 1 << 18,
566 ARM_HWCAP_A64_SM4 = 1 << 19,
567 ARM_HWCAP_A64_ASIMDDP = 1 << 20,
568 ARM_HWCAP_A64_SHA512 = 1 << 21,
569 ARM_HWCAP_A64_SVE = 1 << 22,
570 ARM_HWCAP_A64_ASIMDFHM = 1 << 23,
571 ARM_HWCAP_A64_DIT = 1 << 24,
572 ARM_HWCAP_A64_USCAT = 1 << 25,
573 ARM_HWCAP_A64_ILRCPC = 1 << 26,
574 ARM_HWCAP_A64_FLAGM = 1 << 27,
575 ARM_HWCAP_A64_SSBS = 1 << 28,
576 ARM_HWCAP_A64_SB = 1 << 29,
577 ARM_HWCAP_A64_PACA = 1 << 30,
578 ARM_HWCAP_A64_PACG = 1UL << 31,
579
580 ARM_HWCAP2_A64_DCPODP = 1 << 0,
581 ARM_HWCAP2_A64_SVE2 = 1 << 1,
582 ARM_HWCAP2_A64_SVEAES = 1 << 2,
583 ARM_HWCAP2_A64_SVEPMULL = 1 << 3,
584 ARM_HWCAP2_A64_SVEBITPERM = 1 << 4,
585 ARM_HWCAP2_A64_SVESHA3 = 1 << 5,
586 ARM_HWCAP2_A64_SVESM4 = 1 << 6,
587 ARM_HWCAP2_A64_FLAGM2 = 1 << 7,
588 ARM_HWCAP2_A64_FRINT = 1 << 8,
589 ARM_HWCAP2_A64_SVEI8MM = 1 << 9,
590 ARM_HWCAP2_A64_SVEF32MM = 1 << 10,
591 ARM_HWCAP2_A64_SVEF64MM = 1 << 11,
592 ARM_HWCAP2_A64_SVEBF16 = 1 << 12,
593 ARM_HWCAP2_A64_I8MM = 1 << 13,
594 ARM_HWCAP2_A64_BF16 = 1 << 14,
595 ARM_HWCAP2_A64_DGH = 1 << 15,
596 ARM_HWCAP2_A64_RNG = 1 << 16,
597 ARM_HWCAP2_A64_BTI = 1 << 17,
598 ARM_HWCAP2_A64_MTE = 1 << 18,
599};
600
601#define ELF_HWCAP get_elf_hwcap()
602#define ELF_HWCAP2 get_elf_hwcap2()
603
604#define GET_FEATURE_ID(feat, hwcap) \
605 do { if (cpu_isar_feature(feat, cpu)) { hwcaps |= hwcap; } } while (0)
606
607static uint32_t get_elf_hwcap(void)
608{
609 ARMCPU *cpu = ARM_CPU(thread_cpu);
610 uint32_t hwcaps = 0;
611
612 hwcaps |= ARM_HWCAP_A64_FP;
613 hwcaps |= ARM_HWCAP_A64_ASIMD;
614 hwcaps |= ARM_HWCAP_A64_CPUID;
615
616
617
618 GET_FEATURE_ID(aa64_aes, ARM_HWCAP_A64_AES);
619 GET_FEATURE_ID(aa64_pmull, ARM_HWCAP_A64_PMULL);
620 GET_FEATURE_ID(aa64_sha1, ARM_HWCAP_A64_SHA1);
621 GET_FEATURE_ID(aa64_sha256, ARM_HWCAP_A64_SHA2);
622 GET_FEATURE_ID(aa64_sha512, ARM_HWCAP_A64_SHA512);
623 GET_FEATURE_ID(aa64_crc32, ARM_HWCAP_A64_CRC32);
624 GET_FEATURE_ID(aa64_sha3, ARM_HWCAP_A64_SHA3);
625 GET_FEATURE_ID(aa64_sm3, ARM_HWCAP_A64_SM3);
626 GET_FEATURE_ID(aa64_sm4, ARM_HWCAP_A64_SM4);
627 GET_FEATURE_ID(aa64_fp16, ARM_HWCAP_A64_FPHP | ARM_HWCAP_A64_ASIMDHP);
628 GET_FEATURE_ID(aa64_atomics, ARM_HWCAP_A64_ATOMICS);
629 GET_FEATURE_ID(aa64_rdm, ARM_HWCAP_A64_ASIMDRDM);
630 GET_FEATURE_ID(aa64_dp, ARM_HWCAP_A64_ASIMDDP);
631 GET_FEATURE_ID(aa64_fcma, ARM_HWCAP_A64_FCMA);
632 GET_FEATURE_ID(aa64_sve, ARM_HWCAP_A64_SVE);
633 GET_FEATURE_ID(aa64_pauth, ARM_HWCAP_A64_PACA | ARM_HWCAP_A64_PACG);
634 GET_FEATURE_ID(aa64_fhm, ARM_HWCAP_A64_ASIMDFHM);
635 GET_FEATURE_ID(aa64_jscvt, ARM_HWCAP_A64_JSCVT);
636 GET_FEATURE_ID(aa64_sb, ARM_HWCAP_A64_SB);
637 GET_FEATURE_ID(aa64_condm_4, ARM_HWCAP_A64_FLAGM);
638 GET_FEATURE_ID(aa64_dcpop, ARM_HWCAP_A64_DCPOP);
639 GET_FEATURE_ID(aa64_rcpc_8_3, ARM_HWCAP_A64_LRCPC);
640 GET_FEATURE_ID(aa64_rcpc_8_4, ARM_HWCAP_A64_ILRCPC);
641
642 return hwcaps;
643}
644
645static uint32_t get_elf_hwcap2(void)
646{
647 ARMCPU *cpu = ARM_CPU(thread_cpu);
648 uint32_t hwcaps = 0;
649
650 GET_FEATURE_ID(aa64_dcpodp, ARM_HWCAP2_A64_DCPODP);
651 GET_FEATURE_ID(aa64_condm_5, ARM_HWCAP2_A64_FLAGM2);
652 GET_FEATURE_ID(aa64_frint, ARM_HWCAP2_A64_FRINT);
653 GET_FEATURE_ID(aa64_rndr, ARM_HWCAP2_A64_RNG);
654 GET_FEATURE_ID(aa64_bti, ARM_HWCAP2_A64_BTI);
655 GET_FEATURE_ID(aa64_mte, ARM_HWCAP2_A64_MTE);
656
657 return hwcaps;
658}
659
660#undef GET_FEATURE_ID
661
662#endif
663#endif
664
665#ifdef TARGET_SPARC
666#ifdef TARGET_SPARC64
667
668#define ELF_START_MMAP 0x80000000
669#define ELF_HWCAP (HWCAP_SPARC_FLUSH | HWCAP_SPARC_STBAR | HWCAP_SPARC_SWAP \
670 | HWCAP_SPARC_MULDIV | HWCAP_SPARC_V9)
671#ifndef TARGET_ABI32
672#define elf_check_arch(x) ( (x) == EM_SPARCV9 || (x) == EM_SPARC32PLUS )
673#else
674#define elf_check_arch(x) ( (x) == EM_SPARC32PLUS || (x) == EM_SPARC )
675#endif
676
677#define ELF_CLASS ELFCLASS64
678#define ELF_ARCH EM_SPARCV9
679
680#define STACK_BIAS 2047
681
682static inline void init_thread(struct target_pt_regs *regs,
683 struct image_info *infop)
684{
685#ifndef TARGET_ABI32
686 regs->tstate = 0;
687#endif
688 regs->pc = infop->entry;
689 regs->npc = regs->pc + 4;
690 regs->y = 0;
691#ifdef TARGET_ABI32
692 regs->u_regs[14] = infop->start_stack - 16 * 4;
693#else
694 if (personality(infop->personality) == PER_LINUX32)
695 regs->u_regs[14] = infop->start_stack - 16 * 4;
696 else
697 regs->u_regs[14] = infop->start_stack - 16 * 8 - STACK_BIAS;
698#endif
699}
700
701#else
702#define ELF_START_MMAP 0x80000000
703#define ELF_HWCAP (HWCAP_SPARC_FLUSH | HWCAP_SPARC_STBAR | HWCAP_SPARC_SWAP \
704 | HWCAP_SPARC_MULDIV)
705
706#define ELF_CLASS ELFCLASS32
707#define ELF_ARCH EM_SPARC
708
709static inline void init_thread(struct target_pt_regs *regs,
710 struct image_info *infop)
711{
712 regs->psr = 0;
713 regs->pc = infop->entry;
714 regs->npc = regs->pc + 4;
715 regs->y = 0;
716 regs->u_regs[14] = infop->start_stack - 16 * 4;
717}
718
719#endif
720#endif
721
722#ifdef TARGET_PPC
723
724#define ELF_MACHINE PPC_ELF_MACHINE
725#define ELF_START_MMAP 0x80000000
726
727#if defined(TARGET_PPC64) && !defined(TARGET_ABI32)
728
729#define elf_check_arch(x) ( (x) == EM_PPC64 )
730
731#define ELF_CLASS ELFCLASS64
732
733#else
734
735#define ELF_CLASS ELFCLASS32
736
737#endif
738
739#define ELF_ARCH EM_PPC
740
741
742
743enum {
744 QEMU_PPC_FEATURE_32 = 0x80000000,
745 QEMU_PPC_FEATURE_64 = 0x40000000,
746 QEMU_PPC_FEATURE_601_INSTR = 0x20000000,
747 QEMU_PPC_FEATURE_HAS_ALTIVEC = 0x10000000,
748 QEMU_PPC_FEATURE_HAS_FPU = 0x08000000,
749 QEMU_PPC_FEATURE_HAS_MMU = 0x04000000,
750 QEMU_PPC_FEATURE_HAS_4xxMAC = 0x02000000,
751 QEMU_PPC_FEATURE_UNIFIED_CACHE = 0x01000000,
752 QEMU_PPC_FEATURE_HAS_SPE = 0x00800000,
753 QEMU_PPC_FEATURE_HAS_EFP_SINGLE = 0x00400000,
754 QEMU_PPC_FEATURE_HAS_EFP_DOUBLE = 0x00200000,
755 QEMU_PPC_FEATURE_NO_TB = 0x00100000,
756 QEMU_PPC_FEATURE_POWER4 = 0x00080000,
757 QEMU_PPC_FEATURE_POWER5 = 0x00040000,
758 QEMU_PPC_FEATURE_POWER5_PLUS = 0x00020000,
759 QEMU_PPC_FEATURE_CELL = 0x00010000,
760 QEMU_PPC_FEATURE_BOOKE = 0x00008000,
761 QEMU_PPC_FEATURE_SMT = 0x00004000,
762 QEMU_PPC_FEATURE_ICACHE_SNOOP = 0x00002000,
763 QEMU_PPC_FEATURE_ARCH_2_05 = 0x00001000,
764 QEMU_PPC_FEATURE_PA6T = 0x00000800,
765 QEMU_PPC_FEATURE_HAS_DFP = 0x00000400,
766 QEMU_PPC_FEATURE_POWER6_EXT = 0x00000200,
767 QEMU_PPC_FEATURE_ARCH_2_06 = 0x00000100,
768 QEMU_PPC_FEATURE_HAS_VSX = 0x00000080,
769 QEMU_PPC_FEATURE_PSERIES_PERFMON_COMPAT = 0x00000040,
770
771 QEMU_PPC_FEATURE_TRUE_LE = 0x00000002,
772 QEMU_PPC_FEATURE_PPC_LE = 0x00000001,
773
774
775 QEMU_PPC_FEATURE2_ARCH_2_07 = 0x80000000,
776 QEMU_PPC_FEATURE2_HAS_HTM = 0x40000000,
777 QEMU_PPC_FEATURE2_HAS_DSCR = 0x20000000,
778 QEMU_PPC_FEATURE2_HAS_EBB = 0x10000000,
779 QEMU_PPC_FEATURE2_HAS_ISEL = 0x08000000,
780 QEMU_PPC_FEATURE2_HAS_TAR = 0x04000000,
781 QEMU_PPC_FEATURE2_VEC_CRYPTO = 0x02000000,
782 QEMU_PPC_FEATURE2_HTM_NOSC = 0x01000000,
783 QEMU_PPC_FEATURE2_ARCH_3_00 = 0x00800000,
784 QEMU_PPC_FEATURE2_HAS_IEEE128 = 0x00400000,
785 QEMU_PPC_FEATURE2_DARN = 0x00200000,
786 QEMU_PPC_FEATURE2_SCV = 0x00100000,
787 QEMU_PPC_FEATURE2_HTM_NO_SUSPEND = 0x00080000,
788};
789
790#define ELF_HWCAP get_elf_hwcap()
791
792static uint32_t get_elf_hwcap(void)
793{
794 PowerPCCPU *cpu = POWERPC_CPU(thread_cpu);
795 uint32_t features = 0;
796
797
798
799#define GET_FEATURE(flag, feature) \
800 do { if (cpu->env.insns_flags & flag) { features |= feature; } } while (0)
801#define GET_FEATURE2(flags, feature) \
802 do { \
803 if ((cpu->env.insns_flags2 & flags) == flags) { \
804 features |= feature; \
805 } \
806 } while (0)
807 GET_FEATURE(PPC_64B, QEMU_PPC_FEATURE_64);
808 GET_FEATURE(PPC_FLOAT, QEMU_PPC_FEATURE_HAS_FPU);
809 GET_FEATURE(PPC_ALTIVEC, QEMU_PPC_FEATURE_HAS_ALTIVEC);
810 GET_FEATURE(PPC_SPE, QEMU_PPC_FEATURE_HAS_SPE);
811 GET_FEATURE(PPC_SPE_SINGLE, QEMU_PPC_FEATURE_HAS_EFP_SINGLE);
812 GET_FEATURE(PPC_SPE_DOUBLE, QEMU_PPC_FEATURE_HAS_EFP_DOUBLE);
813 GET_FEATURE(PPC_BOOKE, QEMU_PPC_FEATURE_BOOKE);
814 GET_FEATURE(PPC_405_MAC, QEMU_PPC_FEATURE_HAS_4xxMAC);
815 GET_FEATURE2(PPC2_DFP, QEMU_PPC_FEATURE_HAS_DFP);
816 GET_FEATURE2(PPC2_VSX, QEMU_PPC_FEATURE_HAS_VSX);
817 GET_FEATURE2((PPC2_PERM_ISA206 | PPC2_DIVE_ISA206 | PPC2_ATOMIC_ISA206 |
818 PPC2_FP_CVT_ISA206 | PPC2_FP_TST_ISA206),
819 QEMU_PPC_FEATURE_ARCH_2_06);
820#undef GET_FEATURE
821#undef GET_FEATURE2
822
823 return features;
824}
825
826#define ELF_HWCAP2 get_elf_hwcap2()
827
828static uint32_t get_elf_hwcap2(void)
829{
830 PowerPCCPU *cpu = POWERPC_CPU(thread_cpu);
831 uint32_t features = 0;
832
833#define GET_FEATURE(flag, feature) \
834 do { if (cpu->env.insns_flags & flag) { features |= feature; } } while (0)
835#define GET_FEATURE2(flag, feature) \
836 do { if (cpu->env.insns_flags2 & flag) { features |= feature; } } while (0)
837
838 GET_FEATURE(PPC_ISEL, QEMU_PPC_FEATURE2_HAS_ISEL);
839 GET_FEATURE2(PPC2_BCTAR_ISA207, QEMU_PPC_FEATURE2_HAS_TAR);
840 GET_FEATURE2((PPC2_BCTAR_ISA207 | PPC2_LSQ_ISA207 | PPC2_ALTIVEC_207 |
841 PPC2_ISA207S), QEMU_PPC_FEATURE2_ARCH_2_07 |
842 QEMU_PPC_FEATURE2_VEC_CRYPTO);
843 GET_FEATURE2(PPC2_ISA300, QEMU_PPC_FEATURE2_ARCH_3_00 |
844 QEMU_PPC_FEATURE2_DARN);
845
846#undef GET_FEATURE
847#undef GET_FEATURE2
848
849 return features;
850}
851
852
853
854
855
856
857
858
859
860
861#define DLINFO_ARCH_ITEMS 5
862#define ARCH_DLINFO \
863 do { \
864 PowerPCCPU *cpu = POWERPC_CPU(thread_cpu); \
865
866
867
868 \
869 NEW_AUX_ENT(AT_IGNOREPPC, AT_IGNOREPPC); \
870 NEW_AUX_ENT(AT_IGNOREPPC, AT_IGNOREPPC); \
871 NEW_AUX_ENT(AT_DCACHEBSIZE, cpu->env.dcache_line_size); \
872 NEW_AUX_ENT(AT_ICACHEBSIZE, cpu->env.icache_line_size); \
873 NEW_AUX_ENT(AT_UCACHEBSIZE, 0); \
874 } while (0)
875
876static inline void init_thread(struct target_pt_regs *_regs, struct image_info *infop)
877{
878 _regs->gpr[1] = infop->start_stack;
879#if defined(TARGET_PPC64) && !defined(TARGET_ABI32)
880 if (get_ppc64_abi(infop) < 2) {
881 uint64_t val;
882 get_user_u64(val, infop->entry + 8);
883 _regs->gpr[2] = val + infop->load_bias;
884 get_user_u64(val, infop->entry);
885 infop->entry = val + infop->load_bias;
886 } else {
887 _regs->gpr[12] = infop->entry;
888 }
889#endif
890 _regs->nip = infop->entry;
891}
892
893
894#define ELF_NREG 48
895typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
896
897static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUPPCState *env)
898{
899 int i;
900 target_ulong ccr = 0;
901
902 for (i = 0; i < ARRAY_SIZE(env->gpr); i++) {
903 (*regs)[i] = tswapreg(env->gpr[i]);
904 }
905
906 (*regs)[32] = tswapreg(env->nip);
907 (*regs)[33] = tswapreg(env->msr);
908 (*regs)[35] = tswapreg(env->ctr);
909 (*regs)[36] = tswapreg(env->lr);
910 (*regs)[37] = tswapreg(env->xer);
911
912 for (i = 0; i < ARRAY_SIZE(env->crf); i++) {
913 ccr |= env->crf[i] << (32 - ((i + 1) * 4));
914 }
915 (*regs)[38] = tswapreg(ccr);
916}
917
918#define USE_ELF_CORE_DUMP
919#define ELF_EXEC_PAGESIZE 4096
920
921#endif
922
923#ifdef TARGET_MIPS
924
925#define ELF_START_MMAP 0x80000000
926
927#ifdef TARGET_MIPS64
928#define ELF_CLASS ELFCLASS64
929#else
930#define ELF_CLASS ELFCLASS32
931#endif
932#define ELF_ARCH EM_MIPS
933
934#define elf_check_arch(x) ((x) == EM_MIPS || (x) == EM_NANOMIPS)
935
936#ifdef TARGET_ABI_MIPSN32
937#define elf_check_abi(x) ((x) & EF_MIPS_ABI2)
938#else
939#define elf_check_abi(x) (!((x) & EF_MIPS_ABI2))
940#endif
941
942static inline void init_thread(struct target_pt_regs *regs,
943 struct image_info *infop)
944{
945 regs->cp0_status = 2 << CP0St_KSU;
946 regs->cp0_epc = infop->entry;
947 regs->regs[29] = infop->start_stack;
948}
949
950
951#define ELF_NREG 45
952typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
953
954
955enum {
956#ifdef TARGET_MIPS64
957 TARGET_EF_R0 = 0,
958#else
959 TARGET_EF_R0 = 6,
960#endif
961 TARGET_EF_R26 = TARGET_EF_R0 + 26,
962 TARGET_EF_R27 = TARGET_EF_R0 + 27,
963 TARGET_EF_LO = TARGET_EF_R0 + 32,
964 TARGET_EF_HI = TARGET_EF_R0 + 33,
965 TARGET_EF_CP0_EPC = TARGET_EF_R0 + 34,
966 TARGET_EF_CP0_BADVADDR = TARGET_EF_R0 + 35,
967 TARGET_EF_CP0_STATUS = TARGET_EF_R0 + 36,
968 TARGET_EF_CP0_CAUSE = TARGET_EF_R0 + 37
969};
970
971
972static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUMIPSState *env)
973{
974 int i;
975
976 for (i = 0; i < TARGET_EF_R0; i++) {
977 (*regs)[i] = 0;
978 }
979 (*regs)[TARGET_EF_R0] = 0;
980
981 for (i = 1; i < ARRAY_SIZE(env->active_tc.gpr); i++) {
982 (*regs)[TARGET_EF_R0 + i] = tswapreg(env->active_tc.gpr[i]);
983 }
984
985 (*regs)[TARGET_EF_R26] = 0;
986 (*regs)[TARGET_EF_R27] = 0;
987 (*regs)[TARGET_EF_LO] = tswapreg(env->active_tc.LO[0]);
988 (*regs)[TARGET_EF_HI] = tswapreg(env->active_tc.HI[0]);
989 (*regs)[TARGET_EF_CP0_EPC] = tswapreg(env->active_tc.PC);
990 (*regs)[TARGET_EF_CP0_BADVADDR] = tswapreg(env->CP0_BadVAddr);
991 (*regs)[TARGET_EF_CP0_STATUS] = tswapreg(env->CP0_Status);
992 (*regs)[TARGET_EF_CP0_CAUSE] = tswapreg(env->CP0_Cause);
993}
994
995#define USE_ELF_CORE_DUMP
996#define ELF_EXEC_PAGESIZE 4096
997
998
999enum {
1000 HWCAP_MIPS_R6 = (1 << 0),
1001 HWCAP_MIPS_MSA = (1 << 1),
1002 HWCAP_MIPS_CRC32 = (1 << 2),
1003 HWCAP_MIPS_MIPS16 = (1 << 3),
1004 HWCAP_MIPS_MDMX = (1 << 4),
1005 HWCAP_MIPS_MIPS3D = (1 << 5),
1006 HWCAP_MIPS_SMARTMIPS = (1 << 6),
1007 HWCAP_MIPS_DSP = (1 << 7),
1008 HWCAP_MIPS_DSP2 = (1 << 8),
1009 HWCAP_MIPS_DSP3 = (1 << 9),
1010 HWCAP_MIPS_MIPS16E2 = (1 << 10),
1011 HWCAP_LOONGSON_MMI = (1 << 11),
1012 HWCAP_LOONGSON_EXT = (1 << 12),
1013 HWCAP_LOONGSON_EXT2 = (1 << 13),
1014 HWCAP_LOONGSON_CPUCFG = (1 << 14),
1015};
1016
1017#define ELF_HWCAP get_elf_hwcap()
1018
1019#define GET_FEATURE_INSN(_flag, _hwcap) \
1020 do { if (cpu->env.insn_flags & (_flag)) { hwcaps |= _hwcap; } } while (0)
1021
1022#define GET_FEATURE_REG_SET(_reg, _mask, _hwcap) \
1023 do { if (cpu->env._reg & (_mask)) { hwcaps |= _hwcap; } } while (0)
1024
1025#define GET_FEATURE_REG_EQU(_reg, _start, _length, _val, _hwcap) \
1026 do { \
1027 if (extract32(cpu->env._reg, (_start), (_length)) == (_val)) { \
1028 hwcaps |= _hwcap; \
1029 } \
1030 } while (0)
1031
1032static uint32_t get_elf_hwcap(void)
1033{
1034 MIPSCPU *cpu = MIPS_CPU(thread_cpu);
1035 uint32_t hwcaps = 0;
1036
1037 GET_FEATURE_REG_EQU(CP0_Config0, CP0C0_AR, CP0C0_AR_LENGTH,
1038 2, HWCAP_MIPS_R6);
1039 GET_FEATURE_REG_SET(CP0_Config3, 1 << CP0C3_MSAP, HWCAP_MIPS_MSA);
1040 GET_FEATURE_INSN(ASE_LMMI, HWCAP_LOONGSON_MMI);
1041 GET_FEATURE_INSN(ASE_LEXT, HWCAP_LOONGSON_EXT);
1042
1043 return hwcaps;
1044}
1045
1046#undef GET_FEATURE_REG_EQU
1047#undef GET_FEATURE_REG_SET
1048#undef GET_FEATURE_INSN
1049
1050#endif
1051
1052#ifdef TARGET_MICROBLAZE
1053
1054#define ELF_START_MMAP 0x80000000
1055
1056#define elf_check_arch(x) ( (x) == EM_MICROBLAZE || (x) == EM_MICROBLAZE_OLD)
1057
1058#define ELF_CLASS ELFCLASS32
1059#define ELF_ARCH EM_MICROBLAZE
1060
1061static inline void init_thread(struct target_pt_regs *regs,
1062 struct image_info *infop)
1063{
1064 regs->pc = infop->entry;
1065 regs->r1 = infop->start_stack;
1066
1067}
1068
1069#define ELF_EXEC_PAGESIZE 4096
1070
1071#define USE_ELF_CORE_DUMP
1072#define ELF_NREG 38
1073typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
1074
1075
1076static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUMBState *env)
1077{
1078 int i, pos = 0;
1079
1080 for (i = 0; i < 32; i++) {
1081 (*regs)[pos++] = tswapreg(env->regs[i]);
1082 }
1083
1084 (*regs)[pos++] = tswapreg(env->pc);
1085 (*regs)[pos++] = tswapreg(mb_cpu_read_msr(env));
1086 (*regs)[pos++] = 0;
1087 (*regs)[pos++] = tswapreg(env->ear);
1088 (*regs)[pos++] = 0;
1089 (*regs)[pos++] = tswapreg(env->esr);
1090}
1091
1092#endif
1093
1094#ifdef TARGET_NIOS2
1095
1096#define ELF_START_MMAP 0x80000000
1097
1098#define elf_check_arch(x) ((x) == EM_ALTERA_NIOS2)
1099
1100#define ELF_CLASS ELFCLASS32
1101#define ELF_ARCH EM_ALTERA_NIOS2
1102
1103static void init_thread(struct target_pt_regs *regs, struct image_info *infop)
1104{
1105 regs->ea = infop->entry;
1106 regs->sp = infop->start_stack;
1107 regs->estatus = 0x3;
1108}
1109
1110#define ELF_EXEC_PAGESIZE 4096
1111
1112#define USE_ELF_CORE_DUMP
1113#define ELF_NREG 49
1114typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
1115
1116
1117static void elf_core_copy_regs(target_elf_gregset_t *regs,
1118 const CPUNios2State *env)
1119{
1120 int i;
1121
1122 (*regs)[0] = -1;
1123 for (i = 1; i < 8; i++)
1124 (*regs)[i] = tswapreg(env->regs[i + 7]);
1125
1126 for (i = 8; i < 16; i++)
1127 (*regs)[i] = tswapreg(env->regs[i - 8]);
1128
1129 for (i = 16; i < 24; i++)
1130 (*regs)[i] = tswapreg(env->regs[i + 7]);
1131 (*regs)[24] = -1;
1132 (*regs)[25] = -1;
1133 (*regs)[26] = tswapreg(env->regs[R_GP]);
1134 (*regs)[27] = tswapreg(env->regs[R_SP]);
1135 (*regs)[28] = tswapreg(env->regs[R_FP]);
1136 (*regs)[29] = tswapreg(env->regs[R_EA]);
1137 (*regs)[30] = -1;
1138 (*regs)[31] = tswapreg(env->regs[R_RA]);
1139
1140 (*regs)[32] = tswapreg(env->regs[R_PC]);
1141
1142 (*regs)[33] = -1;
1143 (*regs)[34] = tswapreg(env->regs[CR_ESTATUS]);
1144
1145 for (i = 35; i < 49; i++)
1146 (*regs)[i] = -1;
1147}
1148
1149#endif
1150
1151#ifdef TARGET_OPENRISC
1152
1153#define ELF_START_MMAP 0x08000000
1154
1155#define ELF_ARCH EM_OPENRISC
1156#define ELF_CLASS ELFCLASS32
1157#define ELF_DATA ELFDATA2MSB
1158
1159static inline void init_thread(struct target_pt_regs *regs,
1160 struct image_info *infop)
1161{
1162 regs->pc = infop->entry;
1163 regs->gpr[1] = infop->start_stack;
1164}
1165
1166#define USE_ELF_CORE_DUMP
1167#define ELF_EXEC_PAGESIZE 8192
1168
1169
1170#define ELF_NREG 34
1171typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
1172
1173static void elf_core_copy_regs(target_elf_gregset_t *regs,
1174 const CPUOpenRISCState *env)
1175{
1176 int i;
1177
1178 for (i = 0; i < 32; i++) {
1179 (*regs)[i] = tswapreg(cpu_get_gpr(env, i));
1180 }
1181 (*regs)[32] = tswapreg(env->pc);
1182 (*regs)[33] = tswapreg(cpu_get_sr(env));
1183}
1184#define ELF_HWCAP 0
1185#define ELF_PLATFORM NULL
1186
1187#endif
1188
1189#ifdef TARGET_SH4
1190
1191#define ELF_START_MMAP 0x80000000
1192
1193#define ELF_CLASS ELFCLASS32
1194#define ELF_ARCH EM_SH
1195
1196static inline void init_thread(struct target_pt_regs *regs,
1197 struct image_info *infop)
1198{
1199
1200 regs->pc = infop->entry;
1201 regs->regs[15] = infop->start_stack;
1202}
1203
1204
1205#define ELF_NREG 23
1206typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
1207
1208
1209enum {
1210 TARGET_REG_PC = 16,
1211 TARGET_REG_PR = 17,
1212 TARGET_REG_SR = 18,
1213 TARGET_REG_GBR = 19,
1214 TARGET_REG_MACH = 20,
1215 TARGET_REG_MACL = 21,
1216 TARGET_REG_SYSCALL = 22
1217};
1218
1219static inline void elf_core_copy_regs(target_elf_gregset_t *regs,
1220 const CPUSH4State *env)
1221{
1222 int i;
1223
1224 for (i = 0; i < 16; i++) {
1225 (*regs)[i] = tswapreg(env->gregs[i]);
1226 }
1227
1228 (*regs)[TARGET_REG_PC] = tswapreg(env->pc);
1229 (*regs)[TARGET_REG_PR] = tswapreg(env->pr);
1230 (*regs)[TARGET_REG_SR] = tswapreg(env->sr);
1231 (*regs)[TARGET_REG_GBR] = tswapreg(env->gbr);
1232 (*regs)[TARGET_REG_MACH] = tswapreg(env->mach);
1233 (*regs)[TARGET_REG_MACL] = tswapreg(env->macl);
1234 (*regs)[TARGET_REG_SYSCALL] = 0;
1235}
1236
1237#define USE_ELF_CORE_DUMP
1238#define ELF_EXEC_PAGESIZE 4096
1239
1240enum {
1241 SH_CPU_HAS_FPU = 0x0001,
1242 SH_CPU_HAS_P2_FLUSH_BUG = 0x0002,
1243 SH_CPU_HAS_MMU_PAGE_ASSOC = 0x0004,
1244 SH_CPU_HAS_DSP = 0x0008,
1245 SH_CPU_HAS_PERF_COUNTER = 0x0010,
1246 SH_CPU_HAS_PTEA = 0x0020,
1247 SH_CPU_HAS_LLSC = 0x0040,
1248 SH_CPU_HAS_L2_CACHE = 0x0080,
1249 SH_CPU_HAS_OP32 = 0x0100,
1250 SH_CPU_HAS_PTEAEX = 0x0200,
1251};
1252
1253#define ELF_HWCAP get_elf_hwcap()
1254
1255static uint32_t get_elf_hwcap(void)
1256{
1257 SuperHCPU *cpu = SUPERH_CPU(thread_cpu);
1258 uint32_t hwcap = 0;
1259
1260 hwcap |= SH_CPU_HAS_FPU;
1261
1262 if (cpu->env.features & SH_FEATURE_SH4A) {
1263 hwcap |= SH_CPU_HAS_LLSC;
1264 }
1265
1266 return hwcap;
1267}
1268
1269#endif
1270
1271#ifdef TARGET_CRIS
1272
1273#define ELF_START_MMAP 0x80000000
1274
1275#define ELF_CLASS ELFCLASS32
1276#define ELF_ARCH EM_CRIS
1277
1278static inline void init_thread(struct target_pt_regs *regs,
1279 struct image_info *infop)
1280{
1281 regs->erp = infop->entry;
1282}
1283
1284#define ELF_EXEC_PAGESIZE 8192
1285
1286#endif
1287
1288#ifdef TARGET_M68K
1289
1290#define ELF_START_MMAP 0x80000000
1291
1292#define ELF_CLASS ELFCLASS32
1293#define ELF_ARCH EM_68K
1294
1295
1296
1297
1298static inline void init_thread(struct target_pt_regs *regs,
1299 struct image_info *infop)
1300{
1301 regs->usp = infop->start_stack;
1302 regs->sr = 0;
1303 regs->pc = infop->entry;
1304}
1305
1306
1307#define ELF_NREG 20
1308typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
1309
1310static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUM68KState *env)
1311{
1312 (*regs)[0] = tswapreg(env->dregs[1]);
1313 (*regs)[1] = tswapreg(env->dregs[2]);
1314 (*regs)[2] = tswapreg(env->dregs[3]);
1315 (*regs)[3] = tswapreg(env->dregs[4]);
1316 (*regs)[4] = tswapreg(env->dregs[5]);
1317 (*regs)[5] = tswapreg(env->dregs[6]);
1318 (*regs)[6] = tswapreg(env->dregs[7]);
1319 (*regs)[7] = tswapreg(env->aregs[0]);
1320 (*regs)[8] = tswapreg(env->aregs[1]);
1321 (*regs)[9] = tswapreg(env->aregs[2]);
1322 (*regs)[10] = tswapreg(env->aregs[3]);
1323 (*regs)[11] = tswapreg(env->aregs[4]);
1324 (*regs)[12] = tswapreg(env->aregs[5]);
1325 (*regs)[13] = tswapreg(env->aregs[6]);
1326 (*regs)[14] = tswapreg(env->dregs[0]);
1327 (*regs)[15] = tswapreg(env->aregs[7]);
1328 (*regs)[16] = tswapreg(env->dregs[0]);
1329 (*regs)[17] = tswapreg(env->sr);
1330 (*regs)[18] = tswapreg(env->pc);
1331 (*regs)[19] = 0;
1332}
1333
1334#define USE_ELF_CORE_DUMP
1335#define ELF_EXEC_PAGESIZE 8192
1336
1337#endif
1338
1339#ifdef TARGET_ALPHA
1340
1341#define ELF_START_MMAP (0x30000000000ULL)
1342
1343#define ELF_CLASS ELFCLASS64
1344#define ELF_ARCH EM_ALPHA
1345
1346static inline void init_thread(struct target_pt_regs *regs,
1347 struct image_info *infop)
1348{
1349 regs->pc = infop->entry;
1350 regs->ps = 8;
1351 regs->usp = infop->start_stack;
1352}
1353
1354#define ELF_EXEC_PAGESIZE 8192
1355
1356#endif
1357
1358#ifdef TARGET_S390X
1359
1360#define ELF_START_MMAP (0x20000000000ULL)
1361
1362#define ELF_CLASS ELFCLASS64
1363#define ELF_DATA ELFDATA2MSB
1364#define ELF_ARCH EM_S390
1365
1366#include "elf.h"
1367
1368#define ELF_HWCAP get_elf_hwcap()
1369
1370#define GET_FEATURE(_feat, _hwcap) \
1371 do { if (s390_has_feat(_feat)) { hwcap |= _hwcap; } } while (0)
1372
1373static uint32_t get_elf_hwcap(void)
1374{
1375
1376
1377
1378
1379 uint32_t hwcap = HWCAP_S390_ESAN3 | HWCAP_S390_ZARCH | HWCAP_S390_HIGH_GPRS;
1380
1381 GET_FEATURE(S390_FEAT_STFLE, HWCAP_S390_STFLE);
1382 GET_FEATURE(S390_FEAT_MSA, HWCAP_S390_MSA);
1383 GET_FEATURE(S390_FEAT_LONG_DISPLACEMENT, HWCAP_S390_LDISP);
1384 GET_FEATURE(S390_FEAT_EXTENDED_IMMEDIATE, HWCAP_S390_EIMM);
1385 if (s390_has_feat(S390_FEAT_EXTENDED_TRANSLATION_3) &&
1386 s390_has_feat(S390_FEAT_ETF3_ENH)) {
1387 hwcap |= HWCAP_S390_ETF3EH;
1388 }
1389 GET_FEATURE(S390_FEAT_VECTOR, HWCAP_S390_VXRS);
1390
1391 return hwcap;
1392}
1393
1394static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
1395{
1396 regs->psw.addr = infop->entry;
1397 regs->psw.mask = PSW_MASK_64 | PSW_MASK_32;
1398 regs->gprs[15] = infop->start_stack;
1399}
1400
1401#endif
1402
1403#ifdef TARGET_RISCV
1404
1405#define ELF_START_MMAP 0x80000000
1406#define ELF_ARCH EM_RISCV
1407
1408#ifdef TARGET_RISCV32
1409#define ELF_CLASS ELFCLASS32
1410#else
1411#define ELF_CLASS ELFCLASS64
1412#endif
1413
1414static inline void init_thread(struct target_pt_regs *regs,
1415 struct image_info *infop)
1416{
1417 regs->sepc = infop->entry;
1418 regs->sp = infop->start_stack;
1419}
1420
1421#define ELF_EXEC_PAGESIZE 4096
1422
1423#endif
1424
1425#ifdef TARGET_HPPA
1426
1427#define ELF_START_MMAP 0x80000000
1428#define ELF_CLASS ELFCLASS32
1429#define ELF_ARCH EM_PARISC
1430#define ELF_PLATFORM "PARISC"
1431#define STACK_GROWS_DOWN 0
1432#define STACK_ALIGNMENT 64
1433
1434static inline void init_thread(struct target_pt_regs *regs,
1435 struct image_info *infop)
1436{
1437 regs->iaoq[0] = infop->entry;
1438 regs->iaoq[1] = infop->entry + 4;
1439 regs->gr[23] = 0;
1440 regs->gr[24] = infop->arg_start;
1441 regs->gr[25] = (infop->arg_end - infop->arg_start) / sizeof(abi_ulong);
1442
1443 regs->gr[30] = infop->start_stack + 64;
1444 regs->gr[31] = infop->entry;
1445}
1446
1447#endif
1448
1449#ifdef TARGET_XTENSA
1450
1451#define ELF_START_MMAP 0x20000000
1452
1453#define ELF_CLASS ELFCLASS32
1454#define ELF_ARCH EM_XTENSA
1455
1456static inline void init_thread(struct target_pt_regs *regs,
1457 struct image_info *infop)
1458{
1459 regs->windowbase = 0;
1460 regs->windowstart = 1;
1461 regs->areg[1] = infop->start_stack;
1462 regs->pc = infop->entry;
1463}
1464
1465
1466#define ELF_NREG 128
1467typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
1468
1469enum {
1470 TARGET_REG_PC,
1471 TARGET_REG_PS,
1472 TARGET_REG_LBEG,
1473 TARGET_REG_LEND,
1474 TARGET_REG_LCOUNT,
1475 TARGET_REG_SAR,
1476 TARGET_REG_WINDOWSTART,
1477 TARGET_REG_WINDOWBASE,
1478 TARGET_REG_THREADPTR,
1479 TARGET_REG_AR0 = 64,
1480};
1481
1482static void elf_core_copy_regs(target_elf_gregset_t *regs,
1483 const CPUXtensaState *env)
1484{
1485 unsigned i;
1486
1487 (*regs)[TARGET_REG_PC] = tswapreg(env->pc);
1488 (*regs)[TARGET_REG_PS] = tswapreg(env->sregs[PS] & ~PS_EXCM);
1489 (*regs)[TARGET_REG_LBEG] = tswapreg(env->sregs[LBEG]);
1490 (*regs)[TARGET_REG_LEND] = tswapreg(env->sregs[LEND]);
1491 (*regs)[TARGET_REG_LCOUNT] = tswapreg(env->sregs[LCOUNT]);
1492 (*regs)[TARGET_REG_SAR] = tswapreg(env->sregs[SAR]);
1493 (*regs)[TARGET_REG_WINDOWSTART] = tswapreg(env->sregs[WINDOW_START]);
1494 (*regs)[TARGET_REG_WINDOWBASE] = tswapreg(env->sregs[WINDOW_BASE]);
1495 (*regs)[TARGET_REG_THREADPTR] = tswapreg(env->uregs[THREADPTR]);
1496 xtensa_sync_phys_from_window((CPUXtensaState *)env);
1497 for (i = 0; i < env->config->nareg; ++i) {
1498 (*regs)[TARGET_REG_AR0 + i] = tswapreg(env->phys_regs[i]);
1499 }
1500}
1501
1502#define USE_ELF_CORE_DUMP
1503#define ELF_EXEC_PAGESIZE 4096
1504
1505#endif
1506
1507#ifdef TARGET_HEXAGON
1508
1509#define ELF_START_MMAP 0x20000000
1510
1511#define ELF_CLASS ELFCLASS32
1512#define ELF_ARCH EM_HEXAGON
1513
1514static inline void init_thread(struct target_pt_regs *regs,
1515 struct image_info *infop)
1516{
1517 regs->sepc = infop->entry;
1518 regs->sp = infop->start_stack;
1519}
1520
1521#endif
1522
1523#ifndef ELF_PLATFORM
1524#define ELF_PLATFORM (NULL)
1525#endif
1526
1527#ifndef ELF_MACHINE
1528#define ELF_MACHINE ELF_ARCH
1529#endif
1530
1531#ifndef elf_check_arch
1532#define elf_check_arch(x) ((x) == ELF_ARCH)
1533#endif
1534
1535#ifndef elf_check_abi
1536#define elf_check_abi(x) (1)
1537#endif
1538
1539#ifndef ELF_HWCAP
1540#define ELF_HWCAP 0
1541#endif
1542
1543#ifndef STACK_GROWS_DOWN
1544#define STACK_GROWS_DOWN 1
1545#endif
1546
1547#ifndef STACK_ALIGNMENT
1548#define STACK_ALIGNMENT 16
1549#endif
1550
1551#ifdef TARGET_ABI32
1552#undef ELF_CLASS
1553#define ELF_CLASS ELFCLASS32
1554#undef bswaptls
1555#define bswaptls(ptr) bswap32s(ptr)
1556#endif
1557
1558#include "elf.h"
1559
1560
1561#if defined(TARGET_AARCH64)
1562
1563static bool arch_parse_elf_property(uint32_t pr_type, uint32_t pr_datasz,
1564 const uint32_t *data,
1565 struct image_info *info,
1566 Error **errp)
1567{
1568 if (pr_type == GNU_PROPERTY_AARCH64_FEATURE_1_AND) {
1569 if (pr_datasz != sizeof(uint32_t)) {
1570 error_setg(errp, "Ill-formed GNU_PROPERTY_AARCH64_FEATURE_1_AND");
1571 return false;
1572 }
1573
1574 info->note_flags = *data;
1575 }
1576 return true;
1577}
1578#define ARCH_USE_GNU_PROPERTY 1
1579
1580#else
1581
1582static bool arch_parse_elf_property(uint32_t pr_type, uint32_t pr_datasz,
1583 const uint32_t *data,
1584 struct image_info *info,
1585 Error **errp)
1586{
1587 g_assert_not_reached();
1588}
1589#define ARCH_USE_GNU_PROPERTY 0
1590
1591#endif
1592
1593struct exec
1594{
1595 unsigned int a_info;
1596 unsigned int a_text;
1597 unsigned int a_data;
1598 unsigned int a_bss;
1599 unsigned int a_syms;
1600 unsigned int a_entry;
1601 unsigned int a_trsize;
1602 unsigned int a_drsize;
1603};
1604
1605
1606#define N_MAGIC(exec) ((exec).a_info & 0xffff)
1607#define OMAGIC 0407
1608#define NMAGIC 0410
1609#define ZMAGIC 0413
1610#define QMAGIC 0314
1611
1612
1613#define TARGET_ELF_EXEC_PAGESIZE \
1614 (((eppnt->p_align & ~qemu_host_page_mask) != 0) ? \
1615 TARGET_PAGE_SIZE : MAX(qemu_host_page_size, TARGET_PAGE_SIZE))
1616#define TARGET_ELF_PAGELENGTH(_v) ROUND_UP((_v), TARGET_ELF_EXEC_PAGESIZE)
1617#define TARGET_ELF_PAGESTART(_v) ((_v) & \
1618 ~(abi_ulong)(TARGET_ELF_EXEC_PAGESIZE-1))
1619#define TARGET_ELF_PAGEOFFSET(_v) ((_v) & (TARGET_ELF_EXEC_PAGESIZE-1))
1620
1621#define DLINFO_ITEMS 16
1622
1623static inline void memcpy_fromfs(void * to, const void * from, unsigned long n)
1624{
1625 memcpy(to, from, n);
1626}
1627
1628#ifdef BSWAP_NEEDED
1629static void bswap_ehdr(struct elfhdr *ehdr)
1630{
1631 bswap16s(&ehdr->e_type);
1632 bswap16s(&ehdr->e_machine);
1633 bswap32s(&ehdr->e_version);
1634 bswaptls(&ehdr->e_entry);
1635 bswaptls(&ehdr->e_phoff);
1636 bswaptls(&ehdr->e_shoff);
1637 bswap32s(&ehdr->e_flags);
1638 bswap16s(&ehdr->e_ehsize);
1639 bswap16s(&ehdr->e_phentsize);
1640 bswap16s(&ehdr->e_phnum);
1641 bswap16s(&ehdr->e_shentsize);
1642 bswap16s(&ehdr->e_shnum);
1643 bswap16s(&ehdr->e_shstrndx);
1644}
1645
1646static void bswap_phdr(struct elf_phdr *phdr, int phnum)
1647{
1648 int i;
1649 for (i = 0; i < phnum; ++i, ++phdr) {
1650 bswap32s(&phdr->p_type);
1651 bswap32s(&phdr->p_flags);
1652 bswaptls(&phdr->p_offset);
1653 bswaptls(&phdr->p_vaddr);
1654 bswaptls(&phdr->p_paddr);
1655 bswaptls(&phdr->p_filesz);
1656 bswaptls(&phdr->p_memsz);
1657 bswaptls(&phdr->p_align);
1658 }
1659}
1660
1661static void bswap_shdr(struct elf_shdr *shdr, int shnum)
1662{
1663 int i;
1664 for (i = 0; i < shnum; ++i, ++shdr) {
1665 bswap32s(&shdr->sh_name);
1666 bswap32s(&shdr->sh_type);
1667 bswaptls(&shdr->sh_flags);
1668 bswaptls(&shdr->sh_addr);
1669 bswaptls(&shdr->sh_offset);
1670 bswaptls(&shdr->sh_size);
1671 bswap32s(&shdr->sh_link);
1672 bswap32s(&shdr->sh_info);
1673 bswaptls(&shdr->sh_addralign);
1674 bswaptls(&shdr->sh_entsize);
1675 }
1676}
1677
1678static void bswap_sym(struct elf_sym *sym)
1679{
1680 bswap32s(&sym->st_name);
1681 bswaptls(&sym->st_value);
1682 bswaptls(&sym->st_size);
1683 bswap16s(&sym->st_shndx);
1684}
1685
1686#ifdef TARGET_MIPS
1687static void bswap_mips_abiflags(Mips_elf_abiflags_v0 *abiflags)
1688{
1689 bswap16s(&abiflags->version);
1690 bswap32s(&abiflags->ases);
1691 bswap32s(&abiflags->isa_ext);
1692 bswap32s(&abiflags->flags1);
1693 bswap32s(&abiflags->flags2);
1694}
1695#endif
1696#else
1697static inline void bswap_ehdr(struct elfhdr *ehdr) { }
1698static inline void bswap_phdr(struct elf_phdr *phdr, int phnum) { }
1699static inline void bswap_shdr(struct elf_shdr *shdr, int shnum) { }
1700static inline void bswap_sym(struct elf_sym *sym) { }
1701#ifdef TARGET_MIPS
1702static inline void bswap_mips_abiflags(Mips_elf_abiflags_v0 *abiflags) { }
1703#endif
1704#endif
1705
1706#ifdef USE_ELF_CORE_DUMP
1707static int elf_core_dump(int, const CPUArchState *);
1708#endif
1709static void load_symbols(struct elfhdr *hdr, int fd, abi_ulong load_bias);
1710
1711
1712
1713static bool elf_check_ident(struct elfhdr *ehdr)
1714{
1715 return (ehdr->e_ident[EI_MAG0] == ELFMAG0
1716 && ehdr->e_ident[EI_MAG1] == ELFMAG1
1717 && ehdr->e_ident[EI_MAG2] == ELFMAG2
1718 && ehdr->e_ident[EI_MAG3] == ELFMAG3
1719 && ehdr->e_ident[EI_CLASS] == ELF_CLASS
1720 && ehdr->e_ident[EI_DATA] == ELF_DATA
1721 && ehdr->e_ident[EI_VERSION] == EV_CURRENT);
1722}
1723
1724
1725
1726static bool elf_check_ehdr(struct elfhdr *ehdr)
1727{
1728 return (elf_check_arch(ehdr->e_machine)
1729 && elf_check_abi(ehdr->e_flags)
1730 && ehdr->e_ehsize == sizeof(struct elfhdr)
1731 && ehdr->e_phentsize == sizeof(struct elf_phdr)
1732 && (ehdr->e_type == ET_EXEC || ehdr->e_type == ET_DYN));
1733}
1734
1735
1736
1737
1738
1739
1740
1741static abi_ulong copy_elf_strings(int argc, char **argv, char *scratch,
1742 abi_ulong p, abi_ulong stack_limit)
1743{
1744 char *tmp;
1745 int len, i;
1746 abi_ulong top = p;
1747
1748 if (!p) {
1749 return 0;
1750 }
1751
1752 if (STACK_GROWS_DOWN) {
1753 int offset = ((p - 1) % TARGET_PAGE_SIZE) + 1;
1754 for (i = argc - 1; i >= 0; --i) {
1755 tmp = argv[i];
1756 if (!tmp) {
1757 fprintf(stderr, "VFS: argc is wrong");
1758 exit(-1);
1759 }
1760 len = strlen(tmp) + 1;
1761 tmp += len;
1762
1763 if (len > (p - stack_limit)) {
1764 return 0;
1765 }
1766 while (len) {
1767 int bytes_to_copy = (len > offset) ? offset : len;
1768 tmp -= bytes_to_copy;
1769 p -= bytes_to_copy;
1770 offset -= bytes_to_copy;
1771 len -= bytes_to_copy;
1772
1773 memcpy_fromfs(scratch + offset, tmp, bytes_to_copy);
1774
1775 if (offset == 0) {
1776 memcpy_to_target(p, scratch, top - p);
1777 top = p;
1778 offset = TARGET_PAGE_SIZE;
1779 }
1780 }
1781 }
1782 if (p != top) {
1783 memcpy_to_target(p, scratch + offset, top - p);
1784 }
1785 } else {
1786 int remaining = TARGET_PAGE_SIZE - (p % TARGET_PAGE_SIZE);
1787 for (i = 0; i < argc; ++i) {
1788 tmp = argv[i];
1789 if (!tmp) {
1790 fprintf(stderr, "VFS: argc is wrong");
1791 exit(-1);
1792 }
1793 len = strlen(tmp) + 1;
1794 if (len > (stack_limit - p)) {
1795 return 0;
1796 }
1797 while (len) {
1798 int bytes_to_copy = (len > remaining) ? remaining : len;
1799
1800 memcpy_fromfs(scratch + (p - top), tmp, bytes_to_copy);
1801
1802 tmp += bytes_to_copy;
1803 remaining -= bytes_to_copy;
1804 p += bytes_to_copy;
1805 len -= bytes_to_copy;
1806
1807 if (remaining == 0) {
1808 memcpy_to_target(top, scratch, p - top);
1809 top = p;
1810 remaining = TARGET_PAGE_SIZE;
1811 }
1812 }
1813 }
1814 if (p != top) {
1815 memcpy_to_target(top, scratch, p - top);
1816 }
1817 }
1818
1819 return p;
1820}
1821
1822
1823
1824
1825
1826
1827#define STACK_LOWER_LIMIT (32 * TARGET_PAGE_SIZE)
1828
1829static abi_ulong setup_arg_pages(struct linux_binprm *bprm,
1830 struct image_info *info)
1831{
1832 abi_ulong size, error, guard;
1833
1834 size = guest_stack_size;
1835 if (size < STACK_LOWER_LIMIT) {
1836 size = STACK_LOWER_LIMIT;
1837 }
1838 guard = TARGET_PAGE_SIZE;
1839 if (guard < qemu_real_host_page_size) {
1840 guard = qemu_real_host_page_size;
1841 }
1842
1843 error = target_mmap(0, size + guard, PROT_READ | PROT_WRITE,
1844 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
1845 if (error == -1) {
1846 perror("mmap stack");
1847 exit(-1);
1848 }
1849
1850
1851 if (STACK_GROWS_DOWN) {
1852 target_mprotect(error, guard, PROT_NONE);
1853 info->stack_limit = error + guard;
1854 return info->stack_limit + size - sizeof(void *);
1855 } else {
1856 target_mprotect(error + size, guard, PROT_NONE);
1857 info->stack_limit = error + size;
1858 return error;
1859 }
1860}
1861
1862
1863
1864static void zero_bss(abi_ulong elf_bss, abi_ulong last_bss, int prot)
1865{
1866 uintptr_t host_start, host_map_start, host_end;
1867
1868 last_bss = TARGET_PAGE_ALIGN(last_bss);
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881 host_start = (uintptr_t) g2h_untagged(elf_bss);
1882 host_end = (uintptr_t) g2h_untagged(last_bss);
1883 host_map_start = REAL_HOST_PAGE_ALIGN(host_start);
1884
1885 if (host_map_start < host_end) {
1886 void *p = mmap((void *)host_map_start, host_end - host_map_start,
1887 prot, MAP_FIXED | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
1888 if (p == MAP_FAILED) {
1889 perror("cannot mmap brk");
1890 exit(-1);
1891 }
1892 }
1893
1894
1895 if ((page_get_flags(last_bss-1) & prot) != prot) {
1896 page_set_flags(elf_bss & TARGET_PAGE_MASK, last_bss, prot | PAGE_VALID);
1897 }
1898
1899 if (host_start < host_map_start) {
1900 memset((void *)host_start, 0, host_map_start - host_start);
1901 }
1902}
1903
1904#ifdef TARGET_ARM
1905static int elf_is_fdpic(struct elfhdr *exec)
1906{
1907 return exec->e_ident[EI_OSABI] == ELFOSABI_ARM_FDPIC;
1908}
1909#else
1910
1911static int elf_is_fdpic(struct elfhdr *exec)
1912{
1913 return 0;
1914}
1915#endif
1916
1917static abi_ulong loader_build_fdpic_loadmap(struct image_info *info, abi_ulong sp)
1918{
1919 uint16_t n;
1920 struct elf32_fdpic_loadseg *loadsegs = info->loadsegs;
1921
1922
1923 n = info->nsegs;
1924 while (n--) {
1925 sp -= 12;
1926 put_user_u32(loadsegs[n].addr, sp+0);
1927 put_user_u32(loadsegs[n].p_vaddr, sp+4);
1928 put_user_u32(loadsegs[n].p_memsz, sp+8);
1929 }
1930
1931
1932 sp -= 4;
1933 put_user_u16(0, sp+0);
1934 put_user_u16(info->nsegs, sp+2);
1935
1936 info->personality = PER_LINUX_FDPIC;
1937 info->loadmap_addr = sp;
1938
1939 return sp;
1940}
1941
1942static abi_ulong create_elf_tables(abi_ulong p, int argc, int envc,
1943 struct elfhdr *exec,
1944 struct image_info *info,
1945 struct image_info *interp_info)
1946{
1947 abi_ulong sp;
1948 abi_ulong u_argc, u_argv, u_envp, u_auxv;
1949 int size;
1950 int i;
1951 abi_ulong u_rand_bytes;
1952 uint8_t k_rand_bytes[16];
1953 abi_ulong u_platform;
1954 const char *k_platform;
1955 const int n = sizeof(elf_addr_t);
1956
1957 sp = p;
1958
1959
1960 if (elf_is_fdpic(exec)) {
1961
1962 sp &= ~3;
1963 sp = loader_build_fdpic_loadmap(info, sp);
1964 info->other_info = interp_info;
1965 if (interp_info) {
1966 interp_info->other_info = info;
1967 sp = loader_build_fdpic_loadmap(interp_info, sp);
1968 info->interpreter_loadmap_addr = interp_info->loadmap_addr;
1969 info->interpreter_pt_dynamic_addr = interp_info->pt_dynamic_addr;
1970 } else {
1971 info->interpreter_loadmap_addr = 0;
1972 info->interpreter_pt_dynamic_addr = 0;
1973 }
1974 }
1975
1976 u_platform = 0;
1977 k_platform = ELF_PLATFORM;
1978 if (k_platform) {
1979 size_t len = strlen(k_platform) + 1;
1980 if (STACK_GROWS_DOWN) {
1981 sp -= (len + n - 1) & ~(n - 1);
1982 u_platform = sp;
1983
1984 memcpy_to_target(sp, k_platform, len);
1985 } else {
1986 memcpy_to_target(sp, k_platform, len);
1987 u_platform = sp;
1988 sp += len + 1;
1989 }
1990 }
1991
1992
1993
1994
1995 if (STACK_GROWS_DOWN) {
1996 sp = QEMU_ALIGN_DOWN(sp, 16);
1997 } else {
1998 sp = QEMU_ALIGN_UP(sp, 16);
1999 }
2000
2001
2002
2003
2004 qemu_guest_getrandom_nofail(k_rand_bytes, sizeof(k_rand_bytes));
2005 if (STACK_GROWS_DOWN) {
2006 sp -= 16;
2007 u_rand_bytes = sp;
2008
2009 memcpy_to_target(sp, k_rand_bytes, 16);
2010 } else {
2011 memcpy_to_target(sp, k_rand_bytes, 16);
2012 u_rand_bytes = sp;
2013 sp += 16;
2014 }
2015
2016 size = (DLINFO_ITEMS + 1) * 2;
2017 if (k_platform)
2018 size += 2;
2019#ifdef DLINFO_ARCH_ITEMS
2020 size += DLINFO_ARCH_ITEMS * 2;
2021#endif
2022#ifdef ELF_HWCAP2
2023 size += 2;
2024#endif
2025 info->auxv_len = size * n;
2026
2027 size += envc + argc + 2;
2028 size += 1;
2029 size *= n;
2030
2031
2032 if (STACK_GROWS_DOWN) {
2033 u_argc = QEMU_ALIGN_DOWN(sp - size, STACK_ALIGNMENT);
2034 sp = u_argc;
2035 } else {
2036 u_argc = sp;
2037 sp = QEMU_ALIGN_UP(sp + size, STACK_ALIGNMENT);
2038 }
2039
2040 u_argv = u_argc + n;
2041 u_envp = u_argv + (argc + 1) * n;
2042 u_auxv = u_envp + (envc + 1) * n;
2043 info->saved_auxv = u_auxv;
2044 info->arg_start = u_argv;
2045 info->arg_end = u_argv + argc * n;
2046
2047
2048
2049
2050#define NEW_AUX_ENT(id, val) do { \
2051 put_user_ual(id, u_auxv); u_auxv += n; \
2052 put_user_ual(val, u_auxv); u_auxv += n; \
2053 } while(0)
2054
2055#ifdef ARCH_DLINFO
2056
2057
2058
2059
2060 ARCH_DLINFO;
2061#endif
2062
2063
2064
2065 NEW_AUX_ENT(AT_PHDR, (abi_ulong)(info->load_addr + exec->e_phoff));
2066 NEW_AUX_ENT(AT_PHENT, (abi_ulong)(sizeof (struct elf_phdr)));
2067 NEW_AUX_ENT(AT_PHNUM, (abi_ulong)(exec->e_phnum));
2068 if ((info->alignment & ~qemu_host_page_mask) != 0) {
2069
2070 NEW_AUX_ENT(AT_PAGESZ, (abi_ulong)(TARGET_PAGE_SIZE));
2071 } else {
2072 NEW_AUX_ENT(AT_PAGESZ, (abi_ulong)(MAX(TARGET_PAGE_SIZE,
2073 qemu_host_page_size)));
2074 }
2075 NEW_AUX_ENT(AT_BASE, (abi_ulong)(interp_info ? interp_info->load_addr : 0));
2076 NEW_AUX_ENT(AT_FLAGS, (abi_ulong)0);
2077 NEW_AUX_ENT(AT_ENTRY, info->entry);
2078 NEW_AUX_ENT(AT_UID, (abi_ulong) getuid());
2079 NEW_AUX_ENT(AT_EUID, (abi_ulong) geteuid());
2080 NEW_AUX_ENT(AT_GID, (abi_ulong) getgid());
2081 NEW_AUX_ENT(AT_EGID, (abi_ulong) getegid());
2082 NEW_AUX_ENT(AT_HWCAP, (abi_ulong) ELF_HWCAP);
2083 NEW_AUX_ENT(AT_CLKTCK, (abi_ulong) sysconf(_SC_CLK_TCK));
2084 NEW_AUX_ENT(AT_RANDOM, (abi_ulong) u_rand_bytes);
2085 NEW_AUX_ENT(AT_SECURE, (abi_ulong) qemu_getauxval(AT_SECURE));
2086 NEW_AUX_ENT(AT_EXECFN, info->file_string);
2087
2088#ifdef ELF_HWCAP2
2089 NEW_AUX_ENT(AT_HWCAP2, (abi_ulong) ELF_HWCAP2);
2090#endif
2091
2092 if (u_platform) {
2093 NEW_AUX_ENT(AT_PLATFORM, u_platform);
2094 }
2095 NEW_AUX_ENT (AT_NULL, 0);
2096#undef NEW_AUX_ENT
2097
2098
2099
2100
2101 assert(info->auxv_len == u_auxv - info->saved_auxv);
2102
2103 put_user_ual(argc, u_argc);
2104
2105 p = info->arg_strings;
2106 for (i = 0; i < argc; ++i) {
2107 put_user_ual(p, u_argv);
2108 u_argv += n;
2109 p += target_strlen(p) + 1;
2110 }
2111 put_user_ual(0, u_argv);
2112
2113 p = info->env_strings;
2114 for (i = 0; i < envc; ++i) {
2115 put_user_ual(p, u_envp);
2116 u_envp += n;
2117 p += target_strlen(p) + 1;
2118 }
2119 put_user_ual(0, u_envp);
2120
2121 return sp;
2122}
2123
2124#ifndef ARM_COMMPAGE
2125#define ARM_COMMPAGE 0
2126#define init_guest_commpage() true
2127#endif
2128
2129static void pgb_fail_in_use(const char *image_name)
2130{
2131 error_report("%s: requires virtual address space that is in use "
2132 "(omit the -B option or choose a different value)",
2133 image_name);
2134 exit(EXIT_FAILURE);
2135}
2136
2137static void pgb_have_guest_base(const char *image_name, abi_ulong guest_loaddr,
2138 abi_ulong guest_hiaddr, long align)
2139{
2140 const int flags = MAP_ANONYMOUS | MAP_PRIVATE | MAP_NORESERVE;
2141 void *addr, *test;
2142
2143 if (!QEMU_IS_ALIGNED(guest_base, align)) {
2144 fprintf(stderr, "Requested guest base %p does not satisfy "
2145 "host minimum alignment (0x%lx)\n",
2146 (void *)guest_base, align);
2147 exit(EXIT_FAILURE);
2148 }
2149
2150
2151 if (reserved_va) {
2152 if (guest_hiaddr > reserved_va) {
2153 error_report("%s: requires more than reserved virtual "
2154 "address space (0x%" PRIx64 " > 0x%lx)",
2155 image_name, (uint64_t)guest_hiaddr, reserved_va);
2156 exit(EXIT_FAILURE);
2157 }
2158 } else {
2159#if HOST_LONG_BITS < TARGET_ABI_BITS
2160 if ((guest_hiaddr - guest_base) > ~(uintptr_t)0) {
2161 error_report("%s: requires more virtual address space "
2162 "than the host can provide (0x%" PRIx64 ")",
2163 image_name, (uint64_t)guest_hiaddr - guest_base);
2164 exit(EXIT_FAILURE);
2165 }
2166#endif
2167 }
2168
2169
2170
2171
2172
2173 if (reserved_va) {
2174 guest_loaddr = (guest_base >= mmap_min_addr ? 0
2175 : mmap_min_addr - guest_base);
2176 guest_hiaddr = reserved_va;
2177 }
2178
2179
2180 test = g2h_untagged(guest_loaddr);
2181 addr = mmap(test, guest_hiaddr - guest_loaddr, PROT_NONE, flags, -1, 0);
2182 if (test != addr) {
2183 pgb_fail_in_use(image_name);
2184 }
2185}
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199static uintptr_t pgd_find_hole_fallback(uintptr_t guest_size, uintptr_t brk,
2200 long align, uintptr_t offset)
2201{
2202 uintptr_t base;
2203
2204
2205 base = ROUND_UP(mmap_min_addr, align);
2206
2207 while (true) {
2208 uintptr_t align_start, end;
2209 align_start = ROUND_UP(base, align);
2210 end = align_start + guest_size + offset;
2211
2212
2213 if (align_start <= brk && brk < end) {
2214 base = brk + (16 * MiB);
2215 continue;
2216 } else if (align_start + guest_size < align_start) {
2217
2218 return -1;
2219 } else {
2220 int flags = MAP_ANONYMOUS | MAP_PRIVATE | MAP_NORESERVE |
2221 MAP_FIXED_NOREPLACE;
2222 void * mmap_start = mmap((void *) align_start, guest_size,
2223 PROT_NONE, flags, -1, 0);
2224 if (mmap_start != MAP_FAILED) {
2225 munmap(mmap_start, guest_size);
2226 if (mmap_start == (void *) align_start) {
2227 return (uintptr_t) mmap_start + offset;
2228 }
2229 }
2230 base += qemu_host_page_size;
2231 }
2232 }
2233}
2234
2235
2236static uintptr_t pgb_find_hole(uintptr_t guest_loaddr, uintptr_t guest_size,
2237 long align, uintptr_t offset)
2238{
2239 GSList *maps, *iter;
2240 uintptr_t this_start, this_end, next_start, brk;
2241 intptr_t ret = -1;
2242
2243 assert(QEMU_IS_ALIGNED(guest_loaddr, align));
2244
2245 maps = read_self_maps();
2246
2247
2248 brk = (uintptr_t)sbrk(0);
2249
2250 if (!maps) {
2251 ret = pgd_find_hole_fallback(guest_size, brk, align, offset);
2252 return ret == -1 ? -1 : ret - guest_loaddr;
2253 }
2254
2255
2256 this_start = mmap_min_addr;
2257
2258 for (iter = maps; iter;
2259 this_start = next_start, iter = g_slist_next(iter)) {
2260 uintptr_t align_start, hole_size;
2261
2262 this_end = ((MapInfo *)iter->data)->start;
2263 next_start = ((MapInfo *)iter->data)->end;
2264 align_start = ROUND_UP(this_start + offset, align);
2265
2266
2267 if (align_start >= this_end) {
2268 continue;
2269 }
2270 hole_size = this_end - align_start;
2271 if (hole_size < guest_size) {
2272 continue;
2273 }
2274
2275
2276 if (this_start <= brk && brk < this_end) {
2277 hole_size -= guest_size;
2278 if (sizeof(uintptr_t) == 8 && hole_size >= 1 * GiB) {
2279 align_start += 1 * GiB;
2280 } else if (hole_size >= 16 * MiB) {
2281 align_start += 16 * MiB;
2282 } else {
2283 align_start = (this_end - guest_size) & -align;
2284 if (align_start < this_start) {
2285 continue;
2286 }
2287 }
2288 }
2289
2290
2291 if (ret < 0) {
2292 ret = align_start - guest_loaddr;
2293 }
2294
2295 if (align_start <= guest_loaddr &&
2296 guest_loaddr + guest_size <= this_end) {
2297 ret = 0;
2298 }
2299
2300 if (this_end >= guest_loaddr) {
2301 break;
2302 }
2303 }
2304 free_self_maps(maps);
2305
2306 return ret;
2307}
2308
2309static void pgb_static(const char *image_name, abi_ulong orig_loaddr,
2310 abi_ulong orig_hiaddr, long align)
2311{
2312 uintptr_t loaddr = orig_loaddr;
2313 uintptr_t hiaddr = orig_hiaddr;
2314 uintptr_t offset = 0;
2315 uintptr_t addr;
2316
2317 if (hiaddr != orig_hiaddr) {
2318 error_report("%s: requires virtual address space that the "
2319 "host cannot provide (0x%" PRIx64 ")",
2320 image_name, (uint64_t)orig_hiaddr);
2321 exit(EXIT_FAILURE);
2322 }
2323
2324 loaddr &= -align;
2325 if (ARM_COMMPAGE) {
2326
2327
2328
2329
2330
2331
2332
2333 if (sizeof(uintptr_t) == 8 || loaddr >= 0x80000000u) {
2334 hiaddr = (uintptr_t) 4 << 30;
2335 } else {
2336 offset = -(ARM_COMMPAGE & -align);
2337 }
2338 }
2339
2340 addr = pgb_find_hole(loaddr, hiaddr - loaddr, align, offset);
2341 if (addr == -1) {
2342
2343
2344
2345
2346
2347
2348 error_report("%s: Unable to allocate %#zx bytes of "
2349 "virtual address space", image_name,
2350 (size_t)(hiaddr - loaddr));
2351 exit(EXIT_FAILURE);
2352 }
2353
2354 guest_base = addr;
2355}
2356
2357static void pgb_dynamic(const char *image_name, long align)
2358{
2359
2360
2361
2362
2363
2364 if (ARM_COMMPAGE) {
2365 uintptr_t addr, commpage;
2366
2367
2368 assert(sizeof(uintptr_t) == 4);
2369
2370
2371
2372
2373
2374 commpage = ARM_COMMPAGE & -align;
2375 addr = pgb_find_hole(commpage, -commpage, align, 0);
2376 assert(addr != -1);
2377 guest_base = addr;
2378 }
2379}
2380
2381static void pgb_reserved_va(const char *image_name, abi_ulong guest_loaddr,
2382 abi_ulong guest_hiaddr, long align)
2383{
2384 int flags = MAP_ANONYMOUS | MAP_PRIVATE | MAP_NORESERVE;
2385 void *addr, *test;
2386
2387 if (guest_hiaddr > reserved_va) {
2388 error_report("%s: requires more than reserved virtual "
2389 "address space (0x%" PRIx64 " > 0x%lx)",
2390 image_name, (uint64_t)guest_hiaddr, reserved_va);
2391 exit(EXIT_FAILURE);
2392 }
2393
2394
2395 pgb_static(image_name, 0, reserved_va, align);
2396
2397
2398 flags |= MAP_FIXED_NOREPLACE;
2399
2400
2401 assert(guest_base != 0);
2402 test = g2h_untagged(0);
2403 addr = mmap(test, reserved_va, PROT_NONE, flags, -1, 0);
2404 if (addr == MAP_FAILED || addr != test) {
2405 error_report("Unable to reserve 0x%lx bytes of virtual address "
2406 "space at %p (%s) for use as guest address space (check your"
2407 "virtual memory ulimit setting, min_mmap_addr or reserve less "
2408 "using -R option)", reserved_va, test, strerror(errno));
2409 exit(EXIT_FAILURE);
2410 }
2411}
2412
2413void probe_guest_base(const char *image_name, abi_ulong guest_loaddr,
2414 abi_ulong guest_hiaddr)
2415{
2416
2417 uintptr_t align = MAX(SHMLBA, qemu_host_page_size);
2418
2419 if (have_guest_base) {
2420 pgb_have_guest_base(image_name, guest_loaddr, guest_hiaddr, align);
2421 } else if (reserved_va) {
2422 pgb_reserved_va(image_name, guest_loaddr, guest_hiaddr, align);
2423 } else if (guest_loaddr) {
2424 pgb_static(image_name, guest_loaddr, guest_hiaddr, align);
2425 } else {
2426 pgb_dynamic(image_name, align);
2427 }
2428
2429
2430 if (!init_guest_commpage()) {
2431
2432
2433
2434
2435
2436 assert(have_guest_base);
2437 pgb_fail_in_use(image_name);
2438 }
2439
2440 assert(QEMU_IS_ALIGNED(guest_base, align));
2441 qemu_log_mask(CPU_LOG_PAGE, "Locating guest address space "
2442 "@ 0x%" PRIx64 "\n", (uint64_t)guest_base);
2443}
2444
2445enum {
2446
2447 GNU0_MAGIC = const_le32('G' | 'N' << 8 | 'U' << 16),
2448 NOTE_DATA_SZ = 1 * KiB,
2449 NOTE_NAME_SZ = 4,
2450 ELF_GNU_PROPERTY_ALIGN = ELF_CLASS == ELFCLASS32 ? 4 : 8,
2451};
2452
2453
2454
2455
2456
2457static bool parse_elf_property(const uint32_t *data, int *off, int datasz,
2458 struct image_info *info, bool have_prev_type,
2459 uint32_t *prev_type, Error **errp)
2460{
2461 uint32_t pr_type, pr_datasz, step;
2462
2463 if (*off > datasz || !QEMU_IS_ALIGNED(*off, ELF_GNU_PROPERTY_ALIGN)) {
2464 goto error_data;
2465 }
2466 datasz -= *off;
2467 data += *off / sizeof(uint32_t);
2468
2469 if (datasz < 2 * sizeof(uint32_t)) {
2470 goto error_data;
2471 }
2472 pr_type = data[0];
2473 pr_datasz = data[1];
2474 data += 2;
2475 datasz -= 2 * sizeof(uint32_t);
2476 step = ROUND_UP(pr_datasz, ELF_GNU_PROPERTY_ALIGN);
2477 if (step > datasz) {
2478 goto error_data;
2479 }
2480
2481
2482 if (have_prev_type && pr_type <= *prev_type) {
2483 if (pr_type == *prev_type) {
2484 error_setg(errp, "Duplicate property in PT_GNU_PROPERTY");
2485 } else {
2486 error_setg(errp, "Unsorted property in PT_GNU_PROPERTY");
2487 }
2488 return false;
2489 }
2490 *prev_type = pr_type;
2491
2492 if (!arch_parse_elf_property(pr_type, pr_datasz, data, info, errp)) {
2493 return false;
2494 }
2495
2496 *off += 2 * sizeof(uint32_t) + step;
2497 return true;
2498
2499 error_data:
2500 error_setg(errp, "Ill-formed property in PT_GNU_PROPERTY");
2501 return false;
2502}
2503
2504
2505static bool parse_elf_properties(int image_fd,
2506 struct image_info *info,
2507 const struct elf_phdr *phdr,
2508 char bprm_buf[BPRM_BUF_SIZE],
2509 Error **errp)
2510{
2511 union {
2512 struct elf_note nhdr;
2513 uint32_t data[NOTE_DATA_SZ / sizeof(uint32_t)];
2514 } note;
2515
2516 int n, off, datasz;
2517 bool have_prev_type;
2518 uint32_t prev_type;
2519
2520
2521 if (!ARCH_USE_GNU_PROPERTY) {
2522 return true;
2523 }
2524
2525
2526 n = phdr->p_filesz;
2527 if (n > sizeof(note)) {
2528 error_setg(errp, "PT_GNU_PROPERTY too large");
2529 return false;
2530 }
2531 if (n < sizeof(note.nhdr)) {
2532 error_setg(errp, "PT_GNU_PROPERTY too small");
2533 return false;
2534 }
2535
2536 if (phdr->p_offset + n <= BPRM_BUF_SIZE) {
2537 memcpy(¬e, bprm_buf + phdr->p_offset, n);
2538 } else {
2539 ssize_t len = pread(image_fd, ¬e, n, phdr->p_offset);
2540 if (len != n) {
2541 error_setg_errno(errp, errno, "Error reading file header");
2542 return false;
2543 }
2544 }
2545
2546
2547
2548
2549
2550#ifdef BSWAP_NEEDED
2551 for (int i = 0; i < n / 4; i++) {
2552 bswap32s(note.data + i);
2553 }
2554#endif
2555
2556
2557
2558
2559
2560
2561 if (note.nhdr.n_type != NT_GNU_PROPERTY_TYPE_0 ||
2562 note.nhdr.n_namesz != NOTE_NAME_SZ ||
2563 note.data[3] != GNU0_MAGIC) {
2564 error_setg(errp, "Invalid note in PT_GNU_PROPERTY");
2565 return false;
2566 }
2567 off = sizeof(note.nhdr) + NOTE_NAME_SZ;
2568
2569 datasz = note.nhdr.n_descsz + off;
2570 if (datasz > n) {
2571 error_setg(errp, "Invalid note size in PT_GNU_PROPERTY");
2572 return false;
2573 }
2574
2575 have_prev_type = false;
2576 prev_type = 0;
2577 while (1) {
2578 if (off == datasz) {
2579 return true;
2580 }
2581 if (!parse_elf_property(note.data, &off, datasz, info,
2582 have_prev_type, &prev_type, errp)) {
2583 return false;
2584 }
2585 have_prev_type = true;
2586 }
2587}
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601static void load_elf_image(const char *image_name, int image_fd,
2602 struct image_info *info, char **pinterp_name,
2603 char bprm_buf[BPRM_BUF_SIZE])
2604{
2605 struct elfhdr *ehdr = (struct elfhdr *)bprm_buf;
2606 struct elf_phdr *phdr;
2607 abi_ulong load_addr, load_bias, loaddr, hiaddr, error;
2608 int i, retval, prot_exec;
2609 Error *err = NULL;
2610
2611
2612 if (!elf_check_ident(ehdr)) {
2613 error_setg(&err, "Invalid ELF image for this architecture");
2614 goto exit_errmsg;
2615 }
2616 bswap_ehdr(ehdr);
2617 if (!elf_check_ehdr(ehdr)) {
2618 error_setg(&err, "Invalid ELF image for this architecture");
2619 goto exit_errmsg;
2620 }
2621
2622 i = ehdr->e_phnum * sizeof(struct elf_phdr);
2623 if (ehdr->e_phoff + i <= BPRM_BUF_SIZE) {
2624 phdr = (struct elf_phdr *)(bprm_buf + ehdr->e_phoff);
2625 } else {
2626 phdr = (struct elf_phdr *) alloca(i);
2627 retval = pread(image_fd, phdr, i, ehdr->e_phoff);
2628 if (retval != i) {
2629 goto exit_read;
2630 }
2631 }
2632 bswap_phdr(phdr, ehdr->e_phnum);
2633
2634 info->nsegs = 0;
2635 info->pt_dynamic_addr = 0;
2636
2637 mmap_lock();
2638
2639
2640
2641
2642
2643 loaddr = -1, hiaddr = 0;
2644 info->alignment = 0;
2645 for (i = 0; i < ehdr->e_phnum; ++i) {
2646 struct elf_phdr *eppnt = phdr + i;
2647 if (eppnt->p_type == PT_LOAD) {
2648 abi_ulong a = eppnt->p_vaddr - eppnt->p_offset;
2649 if (a < loaddr) {
2650 loaddr = a;
2651 }
2652 a = eppnt->p_vaddr + eppnt->p_memsz;
2653 if (a > hiaddr) {
2654 hiaddr = a;
2655 }
2656 ++info->nsegs;
2657 info->alignment |= eppnt->p_align;
2658 } else if (eppnt->p_type == PT_INTERP && pinterp_name) {
2659 g_autofree char *interp_name = NULL;
2660
2661 if (*pinterp_name) {
2662 error_setg(&err, "Multiple PT_INTERP entries");
2663 goto exit_errmsg;
2664 }
2665
2666 interp_name = g_malloc(eppnt->p_filesz);
2667
2668 if (eppnt->p_offset + eppnt->p_filesz <= BPRM_BUF_SIZE) {
2669 memcpy(interp_name, bprm_buf + eppnt->p_offset,
2670 eppnt->p_filesz);
2671 } else {
2672 retval = pread(image_fd, interp_name, eppnt->p_filesz,
2673 eppnt->p_offset);
2674 if (retval != eppnt->p_filesz) {
2675 goto exit_read;
2676 }
2677 }
2678 if (interp_name[eppnt->p_filesz - 1] != 0) {
2679 error_setg(&err, "Invalid PT_INTERP entry");
2680 goto exit_errmsg;
2681 }
2682 *pinterp_name = g_steal_pointer(&interp_name);
2683 } else if (eppnt->p_type == PT_GNU_PROPERTY) {
2684 if (!parse_elf_properties(image_fd, info, eppnt, bprm_buf, &err)) {
2685 goto exit_errmsg;
2686 }
2687 }
2688 }
2689
2690 if (pinterp_name != NULL) {
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703 info->reserve_brk = 16 * MiB;
2704 hiaddr += info->reserve_brk;
2705
2706 if (ehdr->e_type == ET_EXEC) {
2707
2708
2709
2710
2711 probe_guest_base(image_name, loaddr, hiaddr);
2712 } else {
2713
2714
2715
2716
2717 probe_guest_base(image_name, 0, hiaddr - loaddr);
2718 }
2719 }
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735 load_addr = target_mmap(loaddr, hiaddr - loaddr, PROT_NONE,
2736 MAP_PRIVATE | MAP_ANON | MAP_NORESERVE |
2737 (ehdr->e_type == ET_EXEC ? MAP_FIXED : 0),
2738 -1, 0);
2739 if (load_addr == -1) {
2740 goto exit_mmap;
2741 }
2742 load_bias = load_addr - loaddr;
2743
2744 if (elf_is_fdpic(ehdr)) {
2745 struct elf32_fdpic_loadseg *loadsegs = info->loadsegs =
2746 g_malloc(sizeof(*loadsegs) * info->nsegs);
2747
2748 for (i = 0; i < ehdr->e_phnum; ++i) {
2749 switch (phdr[i].p_type) {
2750 case PT_DYNAMIC:
2751 info->pt_dynamic_addr = phdr[i].p_vaddr + load_bias;
2752 break;
2753 case PT_LOAD:
2754 loadsegs->addr = phdr[i].p_vaddr + load_bias;
2755 loadsegs->p_vaddr = phdr[i].p_vaddr;
2756 loadsegs->p_memsz = phdr[i].p_memsz;
2757 ++loadsegs;
2758 break;
2759 }
2760 }
2761 }
2762
2763 info->load_bias = load_bias;
2764 info->code_offset = load_bias;
2765 info->data_offset = load_bias;
2766 info->load_addr = load_addr;
2767 info->entry = ehdr->e_entry + load_bias;
2768 info->start_code = -1;
2769 info->end_code = 0;
2770 info->start_data = -1;
2771 info->end_data = 0;
2772 info->brk = 0;
2773 info->elf_flags = ehdr->e_flags;
2774
2775 prot_exec = PROT_EXEC;
2776#ifdef TARGET_AARCH64
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788 if ((info->note_flags & GNU_PROPERTY_AARCH64_FEATURE_1_BTI)
2789 && (pinterp_name == NULL || *pinterp_name == 0)
2790 && cpu_isar_feature(aa64_bti, ARM_CPU(thread_cpu))) {
2791 prot_exec |= TARGET_PROT_BTI;
2792 }
2793#endif
2794
2795 for (i = 0; i < ehdr->e_phnum; i++) {
2796 struct elf_phdr *eppnt = phdr + i;
2797 if (eppnt->p_type == PT_LOAD) {
2798 abi_ulong vaddr, vaddr_po, vaddr_ps, vaddr_ef, vaddr_em, vaddr_len;
2799 int elf_prot = 0;
2800
2801 if (eppnt->p_flags & PF_R) {
2802 elf_prot |= PROT_READ;
2803 }
2804 if (eppnt->p_flags & PF_W) {
2805 elf_prot |= PROT_WRITE;
2806 }
2807 if (eppnt->p_flags & PF_X) {
2808 elf_prot |= prot_exec;
2809 }
2810
2811 vaddr = load_bias + eppnt->p_vaddr;
2812 vaddr_po = TARGET_ELF_PAGEOFFSET(vaddr);
2813 vaddr_ps = TARGET_ELF_PAGESTART(vaddr);
2814
2815 vaddr_ef = vaddr + eppnt->p_filesz;
2816 vaddr_em = vaddr + eppnt->p_memsz;
2817
2818
2819
2820
2821
2822 if (eppnt->p_filesz != 0) {
2823 vaddr_len = TARGET_ELF_PAGELENGTH(eppnt->p_filesz + vaddr_po);
2824 error = target_mmap(vaddr_ps, vaddr_len, elf_prot,
2825 MAP_PRIVATE | MAP_FIXED,
2826 image_fd, eppnt->p_offset - vaddr_po);
2827
2828 if (error == -1) {
2829 goto exit_mmap;
2830 }
2831
2832
2833
2834
2835 if (eppnt->p_filesz < eppnt->p_memsz) {
2836 zero_bss(vaddr_ef, vaddr_em, elf_prot);
2837 }
2838 } else if (eppnt->p_memsz != 0) {
2839 vaddr_len = TARGET_ELF_PAGELENGTH(eppnt->p_memsz + vaddr_po);
2840 error = target_mmap(vaddr_ps, vaddr_len, elf_prot,
2841 MAP_PRIVATE | MAP_FIXED | MAP_ANONYMOUS,
2842 -1, 0);
2843
2844 if (error == -1) {
2845 goto exit_mmap;
2846 }
2847 }
2848
2849
2850 if (elf_prot & PROT_EXEC) {
2851 if (vaddr < info->start_code) {
2852 info->start_code = vaddr;
2853 }
2854 if (vaddr_ef > info->end_code) {
2855 info->end_code = vaddr_ef;
2856 }
2857 }
2858 if (elf_prot & PROT_WRITE) {
2859 if (vaddr < info->start_data) {
2860 info->start_data = vaddr;
2861 }
2862 if (vaddr_ef > info->end_data) {
2863 info->end_data = vaddr_ef;
2864 }
2865 }
2866 if (vaddr_em > info->brk) {
2867 info->brk = vaddr_em;
2868 }
2869#ifdef TARGET_MIPS
2870 } else if (eppnt->p_type == PT_MIPS_ABIFLAGS) {
2871 Mips_elf_abiflags_v0 abiflags;
2872 if (eppnt->p_filesz < sizeof(Mips_elf_abiflags_v0)) {
2873 error_setg(&err, "Invalid PT_MIPS_ABIFLAGS entry");
2874 goto exit_errmsg;
2875 }
2876 if (eppnt->p_offset + eppnt->p_filesz <= BPRM_BUF_SIZE) {
2877 memcpy(&abiflags, bprm_buf + eppnt->p_offset,
2878 sizeof(Mips_elf_abiflags_v0));
2879 } else {
2880 retval = pread(image_fd, &abiflags, sizeof(Mips_elf_abiflags_v0),
2881 eppnt->p_offset);
2882 if (retval != sizeof(Mips_elf_abiflags_v0)) {
2883 goto exit_read;
2884 }
2885 }
2886 bswap_mips_abiflags(&abiflags);
2887 info->fp_abi = abiflags.fp_abi;
2888#endif
2889 }
2890 }
2891
2892 if (info->end_data == 0) {
2893 info->start_data = info->end_code;
2894 info->end_data = info->end_code;
2895 }
2896
2897 if (qemu_log_enabled()) {
2898 load_symbols(ehdr, image_fd, load_bias);
2899 }
2900
2901 mmap_unlock();
2902
2903 close(image_fd);
2904 return;
2905
2906 exit_read:
2907 if (retval >= 0) {
2908 error_setg(&err, "Incomplete read of file header");
2909 } else {
2910 error_setg_errno(&err, errno, "Error reading file header");
2911 }
2912 goto exit_errmsg;
2913 exit_mmap:
2914 error_setg_errno(&err, errno, "Error mapping file");
2915 goto exit_errmsg;
2916 exit_errmsg:
2917 error_reportf_err(err, "%s: ", image_name);
2918 exit(-1);
2919}
2920
2921static void load_elf_interp(const char *filename, struct image_info *info,
2922 char bprm_buf[BPRM_BUF_SIZE])
2923{
2924 int fd, retval;
2925 Error *err = NULL;
2926
2927 fd = open(path(filename), O_RDONLY);
2928 if (fd < 0) {
2929 error_setg_file_open(&err, errno, filename);
2930 error_report_err(err);
2931 exit(-1);
2932 }
2933
2934 retval = read(fd, bprm_buf, BPRM_BUF_SIZE);
2935 if (retval < 0) {
2936 error_setg_errno(&err, errno, "Error reading file header");
2937 error_reportf_err(err, "%s: ", filename);
2938 exit(-1);
2939 }
2940
2941 if (retval < BPRM_BUF_SIZE) {
2942 memset(bprm_buf + retval, 0, BPRM_BUF_SIZE - retval);
2943 }
2944
2945 load_elf_image(filename, fd, info, NULL, bprm_buf);
2946}
2947
2948static int symfind(const void *s0, const void *s1)
2949{
2950 target_ulong addr = *(target_ulong *)s0;
2951 struct elf_sym *sym = (struct elf_sym *)s1;
2952 int result = 0;
2953 if (addr < sym->st_value) {
2954 result = -1;
2955 } else if (addr >= sym->st_value + sym->st_size) {
2956 result = 1;
2957 }
2958 return result;
2959}
2960
2961static const char *lookup_symbolxx(struct syminfo *s, target_ulong orig_addr)
2962{
2963#if ELF_CLASS == ELFCLASS32
2964 struct elf_sym *syms = s->disas_symtab.elf32;
2965#else
2966 struct elf_sym *syms = s->disas_symtab.elf64;
2967#endif
2968
2969
2970 struct elf_sym *sym;
2971
2972 sym = bsearch(&orig_addr, syms, s->disas_num_syms, sizeof(*syms), symfind);
2973 if (sym != NULL) {
2974 return s->disas_strtab + sym->st_name;
2975 }
2976
2977 return "";
2978}
2979
2980
2981static int symcmp(const void *s0, const void *s1)
2982{
2983 struct elf_sym *sym0 = (struct elf_sym *)s0;
2984 struct elf_sym *sym1 = (struct elf_sym *)s1;
2985 return (sym0->st_value < sym1->st_value)
2986 ? -1
2987 : ((sym0->st_value > sym1->st_value) ? 1 : 0);
2988}
2989
2990
2991static void load_symbols(struct elfhdr *hdr, int fd, abi_ulong load_bias)
2992{
2993 int i, shnum, nsyms, sym_idx = 0, str_idx = 0;
2994 uint64_t segsz;
2995 struct elf_shdr *shdr;
2996 char *strings = NULL;
2997 struct syminfo *s = NULL;
2998 struct elf_sym *new_syms, *syms = NULL;
2999
3000 shnum = hdr->e_shnum;
3001 i = shnum * sizeof(struct elf_shdr);
3002 shdr = (struct elf_shdr *)alloca(i);
3003 if (pread(fd, shdr, i, hdr->e_shoff) != i) {
3004 return;
3005 }
3006
3007 bswap_shdr(shdr, shnum);
3008 for (i = 0; i < shnum; ++i) {
3009 if (shdr[i].sh_type == SHT_SYMTAB) {
3010 sym_idx = i;
3011 str_idx = shdr[i].sh_link;
3012 goto found;
3013 }
3014 }
3015
3016
3017 return;
3018
3019 found:
3020
3021 s = g_try_new(struct syminfo, 1);
3022 if (!s) {
3023 goto give_up;
3024 }
3025
3026 segsz = shdr[str_idx].sh_size;
3027 s->disas_strtab = strings = g_try_malloc(segsz);
3028 if (!strings ||
3029 pread(fd, strings, segsz, shdr[str_idx].sh_offset) != segsz) {
3030 goto give_up;
3031 }
3032
3033 segsz = shdr[sym_idx].sh_size;
3034 syms = g_try_malloc(segsz);
3035 if (!syms || pread(fd, syms, segsz, shdr[sym_idx].sh_offset) != segsz) {
3036 goto give_up;
3037 }
3038
3039 if (segsz / sizeof(struct elf_sym) > INT_MAX) {
3040
3041
3042
3043 goto give_up;
3044 }
3045 nsyms = segsz / sizeof(struct elf_sym);
3046 for (i = 0; i < nsyms; ) {
3047 bswap_sym(syms + i);
3048
3049 if (syms[i].st_shndx == SHN_UNDEF
3050 || syms[i].st_shndx >= SHN_LORESERVE
3051 || ELF_ST_TYPE(syms[i].st_info) != STT_FUNC) {
3052 if (i < --nsyms) {
3053 syms[i] = syms[nsyms];
3054 }
3055 } else {
3056#if defined(TARGET_ARM) || defined (TARGET_MIPS)
3057
3058 syms[i].st_value &= ~(target_ulong)1;
3059#endif
3060 syms[i].st_value += load_bias;
3061 i++;
3062 }
3063 }
3064
3065
3066 if (nsyms == 0) {
3067 goto give_up;
3068 }
3069
3070
3071
3072
3073
3074 new_syms = g_try_renew(struct elf_sym, syms, nsyms);
3075 if (new_syms == NULL) {
3076 goto give_up;
3077 }
3078 syms = new_syms;
3079
3080 qsort(syms, nsyms, sizeof(*syms), symcmp);
3081
3082 s->disas_num_syms = nsyms;
3083#if ELF_CLASS == ELFCLASS32
3084 s->disas_symtab.elf32 = syms;
3085#else
3086 s->disas_symtab.elf64 = syms;
3087#endif
3088 s->lookup_symbol = lookup_symbolxx;
3089 s->next = syminfos;
3090 syminfos = s;
3091
3092 return;
3093
3094give_up:
3095 g_free(s);
3096 g_free(strings);
3097 g_free(syms);
3098}
3099
3100uint32_t get_elf_eflags(int fd)
3101{
3102 struct elfhdr ehdr;
3103 off_t offset;
3104 int ret;
3105
3106
3107 offset = lseek(fd, 0, SEEK_SET);
3108 if (offset == (off_t) -1) {
3109 return 0;
3110 }
3111 ret = read(fd, &ehdr, sizeof(ehdr));
3112 if (ret < sizeof(ehdr)) {
3113 return 0;
3114 }
3115 offset = lseek(fd, offset, SEEK_SET);
3116 if (offset == (off_t) -1) {
3117 return 0;
3118 }
3119
3120
3121 if (!elf_check_ident(&ehdr)) {
3122 return 0;
3123 }
3124
3125
3126 bswap_ehdr(&ehdr);
3127 if (!elf_check_ehdr(&ehdr)) {
3128 return 0;
3129 }
3130
3131
3132 return ehdr.e_flags;
3133}
3134
3135int load_elf_binary(struct linux_binprm *bprm, struct image_info *info)
3136{
3137 struct image_info interp_info;
3138 struct elfhdr elf_ex;
3139 char *elf_interpreter = NULL;
3140 char *scratch;
3141
3142 memset(&interp_info, 0, sizeof(interp_info));
3143#ifdef TARGET_MIPS
3144 interp_info.fp_abi = MIPS_ABI_FP_UNKNOWN;
3145#endif
3146
3147 info->start_mmap = (abi_ulong)ELF_START_MMAP;
3148
3149 load_elf_image(bprm->filename, bprm->fd, info,
3150 &elf_interpreter, bprm->buf);
3151
3152
3153
3154
3155 elf_ex = *(struct elfhdr *)bprm->buf;
3156
3157
3158
3159 bprm->p = setup_arg_pages(bprm, info);
3160
3161 scratch = g_new0(char, TARGET_PAGE_SIZE);
3162 if (STACK_GROWS_DOWN) {
3163 bprm->p = copy_elf_strings(1, &bprm->filename, scratch,
3164 bprm->p, info->stack_limit);
3165 info->file_string = bprm->p;
3166 bprm->p = copy_elf_strings(bprm->envc, bprm->envp, scratch,
3167 bprm->p, info->stack_limit);
3168 info->env_strings = bprm->p;
3169 bprm->p = copy_elf_strings(bprm->argc, bprm->argv, scratch,
3170 bprm->p, info->stack_limit);
3171 info->arg_strings = bprm->p;
3172 } else {
3173 info->arg_strings = bprm->p;
3174 bprm->p = copy_elf_strings(bprm->argc, bprm->argv, scratch,
3175 bprm->p, info->stack_limit);
3176 info->env_strings = bprm->p;
3177 bprm->p = copy_elf_strings(bprm->envc, bprm->envp, scratch,
3178 bprm->p, info->stack_limit);
3179 info->file_string = bprm->p;
3180 bprm->p = copy_elf_strings(1, &bprm->filename, scratch,
3181 bprm->p, info->stack_limit);
3182 }
3183
3184 g_free(scratch);
3185
3186 if (!bprm->p) {
3187 fprintf(stderr, "%s: %s\n", bprm->filename, strerror(E2BIG));
3188 exit(-1);
3189 }
3190
3191 if (elf_interpreter) {
3192 load_elf_interp(elf_interpreter, &interp_info, bprm->buf);
3193
3194
3195
3196
3197 if (strcmp(elf_interpreter, "/usr/lib/libc.so.1") == 0
3198 || strcmp(elf_interpreter, "/usr/lib/ld.so.1") == 0) {
3199 info->personality = PER_SVR4;
3200
3201
3202
3203
3204
3205 target_mmap(0, qemu_host_page_size, PROT_READ | PROT_EXEC,
3206 MAP_FIXED | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3207 }
3208#ifdef TARGET_MIPS
3209 info->interp_fp_abi = interp_info.fp_abi;
3210#endif
3211 }
3212
3213 bprm->p = create_elf_tables(bprm->p, bprm->argc, bprm->envc, &elf_ex,
3214 info, (elf_interpreter ? &interp_info : NULL));
3215 info->start_stack = bprm->p;
3216
3217
3218
3219
3220
3221 if (elf_interpreter) {
3222 info->load_bias = interp_info.load_bias;
3223 info->entry = interp_info.entry;
3224 g_free(elf_interpreter);
3225 }
3226
3227#ifdef USE_ELF_CORE_DUMP
3228 bprm->core_dump = &elf_core_dump;
3229#endif
3230
3231
3232
3233
3234
3235
3236 if (info->reserve_brk) {
3237 abi_ulong start_brk = HOST_PAGE_ALIGN(info->brk);
3238 abi_ulong end_brk = HOST_PAGE_ALIGN(info->brk + info->reserve_brk);
3239 target_munmap(start_brk, end_brk - start_brk);
3240 }
3241
3242 return 0;
3243}
3244
3245#ifdef USE_ELF_CORE_DUMP
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286struct memelfnote {
3287 const char *name;
3288 size_t namesz;
3289 size_t namesz_rounded;
3290 int type;
3291 size_t datasz;
3292 size_t datasz_rounded;
3293 void *data;
3294 size_t notesz;
3295};
3296
3297struct target_elf_siginfo {
3298 abi_int si_signo;
3299 abi_int si_code;
3300 abi_int si_errno;
3301};
3302
3303struct target_elf_prstatus {
3304 struct target_elf_siginfo pr_info;
3305 abi_short pr_cursig;
3306 abi_ulong pr_sigpend;
3307 abi_ulong pr_sighold;
3308 target_pid_t pr_pid;
3309 target_pid_t pr_ppid;
3310 target_pid_t pr_pgrp;
3311 target_pid_t pr_sid;
3312 struct target_timeval pr_utime;
3313 struct target_timeval pr_stime;
3314 struct target_timeval pr_cutime;
3315 struct target_timeval pr_cstime;
3316 target_elf_gregset_t pr_reg;
3317 abi_int pr_fpvalid;
3318};
3319
3320#define ELF_PRARGSZ (80)
3321
3322struct target_elf_prpsinfo {
3323 char pr_state;
3324 char pr_sname;
3325 char pr_zomb;
3326 char pr_nice;
3327 abi_ulong pr_flag;
3328 target_uid_t pr_uid;
3329 target_gid_t pr_gid;
3330 target_pid_t pr_pid, pr_ppid, pr_pgrp, pr_sid;
3331
3332 char pr_fname[16] QEMU_NONSTRING;
3333 char pr_psargs[ELF_PRARGSZ];
3334};
3335
3336
3337struct elf_thread_status {
3338 QTAILQ_ENTRY(elf_thread_status) ets_link;
3339 struct target_elf_prstatus prstatus;
3340#if 0
3341 elf_fpregset_t fpu;
3342 struct task_struct *thread;
3343 elf_fpxregset_t xfpu;
3344#endif
3345 struct memelfnote notes[1];
3346 int num_notes;
3347};
3348
3349struct elf_note_info {
3350 struct memelfnote *notes;
3351 struct target_elf_prstatus *prstatus;
3352 struct target_elf_prpsinfo *psinfo;
3353
3354 QTAILQ_HEAD(, elf_thread_status) thread_list;
3355#if 0
3356
3357
3358
3359
3360 elf_fpregset_t *fpu;
3361 elf_fpxregset_t *xfpu;
3362 int thread_status_size;
3363#endif
3364 int notes_size;
3365 int numnote;
3366};
3367
3368struct vm_area_struct {
3369 target_ulong vma_start;
3370 target_ulong vma_end;
3371 abi_ulong vma_flags;
3372 QTAILQ_ENTRY(vm_area_struct) vma_link;
3373};
3374
3375struct mm_struct {
3376 QTAILQ_HEAD(, vm_area_struct) mm_mmap;
3377 int mm_count;
3378};
3379
3380static struct mm_struct *vma_init(void);
3381static void vma_delete(struct mm_struct *);
3382static int vma_add_mapping(struct mm_struct *, target_ulong,
3383 target_ulong, abi_ulong);
3384static int vma_get_mapping_count(const struct mm_struct *);
3385static struct vm_area_struct *vma_first(const struct mm_struct *);
3386static struct vm_area_struct *vma_next(struct vm_area_struct *);
3387static abi_ulong vma_dump_size(const struct vm_area_struct *);
3388static int vma_walker(void *priv, target_ulong start, target_ulong end,
3389 unsigned long flags);
3390
3391static void fill_elf_header(struct elfhdr *, int, uint16_t, uint32_t);
3392static void fill_note(struct memelfnote *, const char *, int,
3393 unsigned int, void *);
3394static void fill_prstatus(struct target_elf_prstatus *, const TaskState *, int);
3395static int fill_psinfo(struct target_elf_prpsinfo *, const TaskState *);
3396static void fill_auxv_note(struct memelfnote *, const TaskState *);
3397static void fill_elf_note_phdr(struct elf_phdr *, int, off_t);
3398static size_t note_size(const struct memelfnote *);
3399static void free_note_info(struct elf_note_info *);
3400static int fill_note_info(struct elf_note_info *, long, const CPUArchState *);
3401static void fill_thread_info(struct elf_note_info *, const CPUArchState *);
3402static int core_dump_filename(const TaskState *, char *, size_t);
3403
3404static int dump_write(int, const void *, size_t);
3405static int write_note(struct memelfnote *, int);
3406static int write_note_info(struct elf_note_info *, int);
3407
3408#ifdef BSWAP_NEEDED
3409static void bswap_prstatus(struct target_elf_prstatus *prstatus)
3410{
3411 prstatus->pr_info.si_signo = tswap32(prstatus->pr_info.si_signo);
3412 prstatus->pr_info.si_code = tswap32(prstatus->pr_info.si_code);
3413 prstatus->pr_info.si_errno = tswap32(prstatus->pr_info.si_errno);
3414 prstatus->pr_cursig = tswap16(prstatus->pr_cursig);
3415 prstatus->pr_sigpend = tswapal(prstatus->pr_sigpend);
3416 prstatus->pr_sighold = tswapal(prstatus->pr_sighold);
3417 prstatus->pr_pid = tswap32(prstatus->pr_pid);
3418 prstatus->pr_ppid = tswap32(prstatus->pr_ppid);
3419 prstatus->pr_pgrp = tswap32(prstatus->pr_pgrp);
3420 prstatus->pr_sid = tswap32(prstatus->pr_sid);
3421
3422
3423 prstatus->pr_fpvalid = tswap32(prstatus->pr_fpvalid);
3424}
3425
3426static void bswap_psinfo(struct target_elf_prpsinfo *psinfo)
3427{
3428 psinfo->pr_flag = tswapal(psinfo->pr_flag);
3429 psinfo->pr_uid = tswap16(psinfo->pr_uid);
3430 psinfo->pr_gid = tswap16(psinfo->pr_gid);
3431 psinfo->pr_pid = tswap32(psinfo->pr_pid);
3432 psinfo->pr_ppid = tswap32(psinfo->pr_ppid);
3433 psinfo->pr_pgrp = tswap32(psinfo->pr_pgrp);
3434 psinfo->pr_sid = tswap32(psinfo->pr_sid);
3435}
3436
3437static void bswap_note(struct elf_note *en)
3438{
3439 bswap32s(&en->n_namesz);
3440 bswap32s(&en->n_descsz);
3441 bswap32s(&en->n_type);
3442}
3443#else
3444static inline void bswap_prstatus(struct target_elf_prstatus *p) { }
3445static inline void bswap_psinfo(struct target_elf_prpsinfo *p) {}
3446static inline void bswap_note(struct elf_note *en) { }
3447#endif
3448
3449
3450
3451
3452
3453
3454
3455
3456static struct mm_struct *vma_init(void)
3457{
3458 struct mm_struct *mm;
3459
3460 if ((mm = g_malloc(sizeof (*mm))) == NULL)
3461 return (NULL);
3462
3463 mm->mm_count = 0;
3464 QTAILQ_INIT(&mm->mm_mmap);
3465
3466 return (mm);
3467}
3468
3469static void vma_delete(struct mm_struct *mm)
3470{
3471 struct vm_area_struct *vma;
3472
3473 while ((vma = vma_first(mm)) != NULL) {
3474 QTAILQ_REMOVE(&mm->mm_mmap, vma, vma_link);
3475 g_free(vma);
3476 }
3477 g_free(mm);
3478}
3479
3480static int vma_add_mapping(struct mm_struct *mm, target_ulong start,
3481 target_ulong end, abi_ulong flags)
3482{
3483 struct vm_area_struct *vma;
3484
3485 if ((vma = g_malloc0(sizeof (*vma))) == NULL)
3486 return (-1);
3487
3488 vma->vma_start = start;
3489 vma->vma_end = end;
3490 vma->vma_flags = flags;
3491
3492 QTAILQ_INSERT_TAIL(&mm->mm_mmap, vma, vma_link);
3493 mm->mm_count++;
3494
3495 return (0);
3496}
3497
3498static struct vm_area_struct *vma_first(const struct mm_struct *mm)
3499{
3500 return (QTAILQ_FIRST(&mm->mm_mmap));
3501}
3502
3503static struct vm_area_struct *vma_next(struct vm_area_struct *vma)
3504{
3505 return (QTAILQ_NEXT(vma, vma_link));
3506}
3507
3508static int vma_get_mapping_count(const struct mm_struct *mm)
3509{
3510 return (mm->mm_count);
3511}
3512
3513
3514
3515
3516static abi_ulong vma_dump_size(const struct vm_area_struct *vma)
3517{
3518
3519 if (!access_ok_untagged(VERIFY_READ, vma->vma_start, TARGET_PAGE_SIZE))
3520 return (0);
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530 if (vma->vma_flags & PROT_EXEC) {
3531 char page[TARGET_PAGE_SIZE];
3532
3533 if (copy_from_user(page, vma->vma_start, sizeof (page))) {
3534 return 0;
3535 }
3536 if ((page[EI_MAG0] == ELFMAG0) &&
3537 (page[EI_MAG1] == ELFMAG1) &&
3538 (page[EI_MAG2] == ELFMAG2) &&
3539 (page[EI_MAG3] == ELFMAG3)) {
3540
3541
3542
3543
3544 return (0);
3545 }
3546 }
3547
3548 return (vma->vma_end - vma->vma_start);
3549}
3550
3551static int vma_walker(void *priv, target_ulong start, target_ulong end,
3552 unsigned long flags)
3553{
3554 struct mm_struct *mm = (struct mm_struct *)priv;
3555
3556 vma_add_mapping(mm, start, end, flags);
3557 return (0);
3558}
3559
3560static void fill_note(struct memelfnote *note, const char *name, int type,
3561 unsigned int sz, void *data)
3562{
3563 unsigned int namesz;
3564
3565 namesz = strlen(name) + 1;
3566 note->name = name;
3567 note->namesz = namesz;
3568 note->namesz_rounded = roundup(namesz, sizeof (int32_t));
3569 note->type = type;
3570 note->datasz = sz;
3571 note->datasz_rounded = roundup(sz, sizeof (int32_t));
3572
3573 note->data = data;
3574
3575
3576
3577
3578
3579 note->notesz = sizeof (struct elf_note) +
3580 note->namesz_rounded + note->datasz_rounded;
3581}
3582
3583static void fill_elf_header(struct elfhdr *elf, int segs, uint16_t machine,
3584 uint32_t flags)
3585{
3586 (void) memset(elf, 0, sizeof(*elf));
3587
3588 (void) memcpy(elf->e_ident, ELFMAG, SELFMAG);
3589 elf->e_ident[EI_CLASS] = ELF_CLASS;
3590 elf->e_ident[EI_DATA] = ELF_DATA;
3591 elf->e_ident[EI_VERSION] = EV_CURRENT;
3592 elf->e_ident[EI_OSABI] = ELF_OSABI;
3593
3594 elf->e_type = ET_CORE;
3595 elf->e_machine = machine;
3596 elf->e_version = EV_CURRENT;
3597 elf->e_phoff = sizeof(struct elfhdr);
3598 elf->e_flags = flags;
3599 elf->e_ehsize = sizeof(struct elfhdr);
3600 elf->e_phentsize = sizeof(struct elf_phdr);
3601 elf->e_phnum = segs;
3602
3603 bswap_ehdr(elf);
3604}
3605
3606static void fill_elf_note_phdr(struct elf_phdr *phdr, int sz, off_t offset)
3607{
3608 phdr->p_type = PT_NOTE;
3609 phdr->p_offset = offset;
3610 phdr->p_vaddr = 0;
3611 phdr->p_paddr = 0;
3612 phdr->p_filesz = sz;
3613 phdr->p_memsz = 0;
3614 phdr->p_flags = 0;
3615 phdr->p_align = 0;
3616
3617 bswap_phdr(phdr, 1);
3618}
3619
3620static size_t note_size(const struct memelfnote *note)
3621{
3622 return (note->notesz);
3623}
3624
3625static void fill_prstatus(struct target_elf_prstatus *prstatus,
3626 const TaskState *ts, int signr)
3627{
3628 (void) memset(prstatus, 0, sizeof (*prstatus));
3629 prstatus->pr_info.si_signo = prstatus->pr_cursig = signr;
3630 prstatus->pr_pid = ts->ts_tid;
3631 prstatus->pr_ppid = getppid();
3632 prstatus->pr_pgrp = getpgrp();
3633 prstatus->pr_sid = getsid(0);
3634
3635 bswap_prstatus(prstatus);
3636}
3637
3638static int fill_psinfo(struct target_elf_prpsinfo *psinfo, const TaskState *ts)
3639{
3640 char *base_filename;
3641 unsigned int i, len;
3642
3643 (void) memset(psinfo, 0, sizeof (*psinfo));
3644
3645 len = ts->info->arg_end - ts->info->arg_start;
3646 if (len >= ELF_PRARGSZ)
3647 len = ELF_PRARGSZ - 1;
3648 if (copy_from_user(&psinfo->pr_psargs, ts->info->arg_start, len))
3649 return -EFAULT;
3650 for (i = 0; i < len; i++)
3651 if (psinfo->pr_psargs[i] == 0)
3652 psinfo->pr_psargs[i] = ' ';
3653 psinfo->pr_psargs[len] = 0;
3654
3655 psinfo->pr_pid = getpid();
3656 psinfo->pr_ppid = getppid();
3657 psinfo->pr_pgrp = getpgrp();
3658 psinfo->pr_sid = getsid(0);
3659 psinfo->pr_uid = getuid();
3660 psinfo->pr_gid = getgid();
3661
3662 base_filename = g_path_get_basename(ts->bprm->filename);
3663
3664
3665
3666
3667 (void) strncpy(psinfo->pr_fname, base_filename,
3668 sizeof(psinfo->pr_fname));
3669
3670 g_free(base_filename);
3671 bswap_psinfo(psinfo);
3672 return (0);
3673}
3674
3675static void fill_auxv_note(struct memelfnote *note, const TaskState *ts)
3676{
3677 elf_addr_t auxv = (elf_addr_t)ts->info->saved_auxv;
3678 elf_addr_t orig_auxv = auxv;
3679 void *ptr;
3680 int len = ts->info->auxv_len;
3681
3682
3683
3684
3685
3686
3687
3688
3689 ptr = lock_user(VERIFY_READ, orig_auxv, len, 0);
3690 if (ptr != NULL) {
3691 fill_note(note, "CORE", NT_AUXV, len, ptr);
3692 unlock_user(ptr, auxv, len);
3693 }
3694}
3695
3696
3697
3698
3699
3700
3701
3702
3703static int core_dump_filename(const TaskState *ts, char *buf,
3704 size_t bufsize)
3705{
3706 char timestamp[64];
3707 char *base_filename = NULL;
3708 struct timeval tv;
3709 struct tm tm;
3710
3711 assert(bufsize >= PATH_MAX);
3712
3713 if (gettimeofday(&tv, NULL) < 0) {
3714 (void) fprintf(stderr, "unable to get current timestamp: %s",
3715 strerror(errno));
3716 return (-1);
3717 }
3718
3719 base_filename = g_path_get_basename(ts->bprm->filename);
3720 (void) strftime(timestamp, sizeof (timestamp), "%Y%m%d-%H%M%S",
3721 localtime_r(&tv.tv_sec, &tm));
3722 (void) snprintf(buf, bufsize, "qemu_%s_%s_%d.core",
3723 base_filename, timestamp, (int)getpid());
3724 g_free(base_filename);
3725
3726 return (0);
3727}
3728
3729static int dump_write(int fd, const void *ptr, size_t size)
3730{
3731 const char *bufp = (const char *)ptr;
3732 ssize_t bytes_written, bytes_left;
3733 struct rlimit dumpsize;
3734 off_t pos;
3735
3736 bytes_written = 0;
3737 getrlimit(RLIMIT_CORE, &dumpsize);
3738 if ((pos = lseek(fd, 0, SEEK_CUR))==-1) {
3739 if (errno == ESPIPE) {
3740 bytes_left = size;
3741 } else {
3742 return pos;
3743 }
3744 } else {
3745 if (dumpsize.rlim_cur <= pos) {
3746 return -1;
3747 } else if (dumpsize.rlim_cur == RLIM_INFINITY) {
3748 bytes_left = size;
3749 } else {
3750 size_t limit_left=dumpsize.rlim_cur - pos;
3751 bytes_left = limit_left >= size ? size : limit_left ;
3752 }
3753 }
3754
3755
3756
3757
3758
3759 do {
3760 bytes_written = write(fd, bufp, bytes_left);
3761 if (bytes_written < 0) {
3762 if (errno == EINTR)
3763 continue;
3764 return (-1);
3765 } else if (bytes_written == 0) {
3766 return (-1);
3767 }
3768 bufp += bytes_written;
3769 bytes_left -= bytes_written;
3770 } while (bytes_left > 0);
3771
3772 return (0);
3773}
3774
3775static int write_note(struct memelfnote *men, int fd)
3776{
3777 struct elf_note en;
3778
3779 en.n_namesz = men->namesz;
3780 en.n_type = men->type;
3781 en.n_descsz = men->datasz;
3782
3783 bswap_note(&en);
3784
3785 if (dump_write(fd, &en, sizeof(en)) != 0)
3786 return (-1);
3787 if (dump_write(fd, men->name, men->namesz_rounded) != 0)
3788 return (-1);
3789 if (dump_write(fd, men->data, men->datasz_rounded) != 0)
3790 return (-1);
3791
3792 return (0);
3793}
3794
3795static void fill_thread_info(struct elf_note_info *info, const CPUArchState *env)
3796{
3797 CPUState *cpu = env_cpu((CPUArchState *)env);
3798 TaskState *ts = (TaskState *)cpu->opaque;
3799 struct elf_thread_status *ets;
3800
3801 ets = g_malloc0(sizeof (*ets));
3802 ets->num_notes = 1;
3803 fill_prstatus(&ets->prstatus, ts, 0);
3804 elf_core_copy_regs(&ets->prstatus.pr_reg, env);
3805 fill_note(&ets->notes[0], "CORE", NT_PRSTATUS, sizeof (ets->prstatus),
3806 &ets->prstatus);
3807
3808 QTAILQ_INSERT_TAIL(&info->thread_list, ets, ets_link);
3809
3810 info->notes_size += note_size(&ets->notes[0]);
3811}
3812
3813static void init_note_info(struct elf_note_info *info)
3814{
3815
3816
3817
3818
3819 memset(info, 0, sizeof (*info));
3820 QTAILQ_INIT(&info->thread_list);
3821}
3822
3823static int fill_note_info(struct elf_note_info *info,
3824 long signr, const CPUArchState *env)
3825{
3826#define NUMNOTES 3
3827 CPUState *cpu = env_cpu((CPUArchState *)env);
3828 TaskState *ts = (TaskState *)cpu->opaque;
3829 int i;
3830
3831 info->notes = g_new0(struct memelfnote, NUMNOTES);
3832 if (info->notes == NULL)
3833 return (-ENOMEM);
3834 info->prstatus = g_malloc0(sizeof (*info->prstatus));
3835 if (info->prstatus == NULL)
3836 return (-ENOMEM);
3837 info->psinfo = g_malloc0(sizeof (*info->psinfo));
3838 if (info->prstatus == NULL)
3839 return (-ENOMEM);
3840
3841
3842
3843
3844
3845 fill_prstatus(info->prstatus, ts, signr);
3846 elf_core_copy_regs(&info->prstatus->pr_reg, env);
3847 fill_note(&info->notes[0], "CORE", NT_PRSTATUS,
3848 sizeof (*info->prstatus), info->prstatus);
3849 fill_psinfo(info->psinfo, ts);
3850 fill_note(&info->notes[1], "CORE", NT_PRPSINFO,
3851 sizeof (*info->psinfo), info->psinfo);
3852 fill_auxv_note(&info->notes[2], ts);
3853 info->numnote = 3;
3854
3855 info->notes_size = 0;
3856 for (i = 0; i < info->numnote; i++)
3857 info->notes_size += note_size(&info->notes[i]);
3858
3859
3860 cpu_list_lock();
3861 CPU_FOREACH(cpu) {
3862 if (cpu == thread_cpu) {
3863 continue;
3864 }
3865 fill_thread_info(info, (CPUArchState *)cpu->env_ptr);
3866 }
3867 cpu_list_unlock();
3868
3869 return (0);
3870}
3871
3872static void free_note_info(struct elf_note_info *info)
3873{
3874 struct elf_thread_status *ets;
3875
3876 while (!QTAILQ_EMPTY(&info->thread_list)) {
3877 ets = QTAILQ_FIRST(&info->thread_list);
3878 QTAILQ_REMOVE(&info->thread_list, ets, ets_link);
3879 g_free(ets);
3880 }
3881
3882 g_free(info->prstatus);
3883 g_free(info->psinfo);
3884 g_free(info->notes);
3885}
3886
3887static int write_note_info(struct elf_note_info *info, int fd)
3888{
3889 struct elf_thread_status *ets;
3890 int i, error = 0;
3891
3892
3893 for (i = 0; i < info->numnote; i++)
3894 if ((error = write_note(&info->notes[i], fd)) != 0)
3895 return (error);
3896
3897
3898 QTAILQ_FOREACH(ets, &info->thread_list, ets_link) {
3899 if ((error = write_note(&ets->notes[0], fd)) != 0)
3900 return (error);
3901 }
3902
3903 return (0);
3904}
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949static int elf_core_dump(int signr, const CPUArchState *env)
3950{
3951 const CPUState *cpu = env_cpu((CPUArchState *)env);
3952 const TaskState *ts = (const TaskState *)cpu->opaque;
3953 struct vm_area_struct *vma = NULL;
3954 char corefile[PATH_MAX];
3955 struct elf_note_info info;
3956 struct elfhdr elf;
3957 struct elf_phdr phdr;
3958 struct rlimit dumpsize;
3959 struct mm_struct *mm = NULL;
3960 off_t offset = 0, data_offset = 0;
3961 int segs = 0;
3962 int fd = -1;
3963
3964 init_note_info(&info);
3965
3966 errno = 0;
3967 getrlimit(RLIMIT_CORE, &dumpsize);
3968 if (dumpsize.rlim_cur == 0)
3969 return 0;
3970
3971 if (core_dump_filename(ts, corefile, sizeof (corefile)) < 0)
3972 return (-errno);
3973
3974 if ((fd = open(corefile, O_WRONLY | O_CREAT,
3975 S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH)) < 0)
3976 return (-errno);
3977
3978
3979
3980
3981
3982
3983 if ((mm = vma_init()) == NULL)
3984 goto out;
3985
3986 walk_memory_regions(mm, vma_walker);
3987 segs = vma_get_mapping_count(mm);
3988
3989
3990
3991
3992
3993 fill_elf_header(&elf, segs + 1, ELF_MACHINE, 0);
3994 if (dump_write(fd, &elf, sizeof (elf)) != 0)
3995 goto out;
3996
3997
3998 if (fill_note_info(&info, signr, env) < 0)
3999 goto out;
4000
4001 offset += sizeof (elf);
4002 offset += (segs + 1) * sizeof (struct elf_phdr);
4003
4004
4005 fill_elf_note_phdr(&phdr, info.notes_size, offset);
4006
4007 offset += info.notes_size;
4008 if (dump_write(fd, &phdr, sizeof (phdr)) != 0)
4009 goto out;
4010
4011
4012
4013
4014
4015 data_offset = offset = roundup(offset, ELF_EXEC_PAGESIZE);
4016
4017
4018
4019
4020
4021 for (vma = vma_first(mm); vma != NULL; vma = vma_next(vma)) {
4022 (void) memset(&phdr, 0, sizeof (phdr));
4023
4024 phdr.p_type = PT_LOAD;
4025 phdr.p_offset = offset;
4026 phdr.p_vaddr = vma->vma_start;
4027 phdr.p_paddr = 0;
4028 phdr.p_filesz = vma_dump_size(vma);
4029 offset += phdr.p_filesz;
4030 phdr.p_memsz = vma->vma_end - vma->vma_start;
4031 phdr.p_flags = vma->vma_flags & PROT_READ ? PF_R : 0;
4032 if (vma->vma_flags & PROT_WRITE)
4033 phdr.p_flags |= PF_W;
4034 if (vma->vma_flags & PROT_EXEC)
4035 phdr.p_flags |= PF_X;
4036 phdr.p_align = ELF_EXEC_PAGESIZE;
4037
4038 bswap_phdr(&phdr, 1);
4039 if (dump_write(fd, &phdr, sizeof(phdr)) != 0) {
4040 goto out;
4041 }
4042 }
4043
4044
4045
4046
4047
4048 if (write_note_info(&info, fd) < 0)
4049 goto out;
4050
4051
4052 if (lseek(fd, data_offset, SEEK_SET) != data_offset)
4053 goto out;
4054
4055
4056
4057
4058 for (vma = vma_first(mm); vma != NULL; vma = vma_next(vma)) {
4059 abi_ulong addr;
4060 abi_ulong end;
4061
4062 end = vma->vma_start + vma_dump_size(vma);
4063
4064 for (addr = vma->vma_start; addr < end;
4065 addr += TARGET_PAGE_SIZE) {
4066 char page[TARGET_PAGE_SIZE];
4067 int error;
4068
4069
4070
4071
4072
4073 error = copy_from_user(page, addr, sizeof (page));
4074 if (error != 0) {
4075 (void) fprintf(stderr, "unable to dump " TARGET_ABI_FMT_lx "\n",
4076 addr);
4077 errno = -error;
4078 goto out;
4079 }
4080 if (dump_write(fd, page, TARGET_PAGE_SIZE) < 0)
4081 goto out;
4082 }
4083 }
4084
4085 out:
4086 free_note_info(&info);
4087 if (mm != NULL)
4088 vma_delete(mm);
4089 (void) close(fd);
4090
4091 if (errno != 0)
4092 return (-errno);
4093 return (0);
4094}
4095#endif
4096
4097void do_init_thread(struct target_pt_regs *regs, struct image_info *infop)
4098{
4099 init_thread(regs, infop);
4100}
4101