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hw/virtio/vhost: re-factor vhost-section and allow DIRTY_MEMORY_CODE
[qemu.git] / linux-user / elfload.c
CommitLineData
31e31b8a 1/* This is the Linux kernel elf-loading code, ported into user space */
d39594e9 2#include "qemu/osdep.h"
edf8e2af 3#include <sys/param.h>
31e31b8a 4
edf8e2af 5#include <sys/resource.h>
30ab9ef2 6#include <sys/shm.h>
31e31b8a 7
3ef693a0 8#include "qemu.h"
76cad711 9#include "disas/disas.h"
f348b6d1 10#include "qemu/path.h"
dc5e9ac7 11#include "qemu/queue.h"
c6a2377f 12#include "qemu/guest-random.h"
6fd59449 13#include "qemu/units.h"
ee947430 14#include "qemu/selfmap.h"
31e31b8a 15
e58ffeb3 16#ifdef _ARCH_PPC64
a6cc84f4 17#undef ARCH_DLINFO
18#undef ELF_PLATFORM
19#undef ELF_HWCAP
ad6919dc 20#undef ELF_HWCAP2
a6cc84f4 21#undef ELF_CLASS
22#undef ELF_DATA
23#undef ELF_ARCH
24#endif
25
edf8e2af
MW		 26#define ELF_OSABI ELFOSABI_SYSV
27
cb33da57
BS		 28/* from personality.h */
29
30/*
31 * Flags for bug emulation.
32 *
33 * These occupy the top three bytes.
34 */
35enum {
d97ef72e
RH		 36 ADDR_NO_RANDOMIZE = 0x0040000, /* disable randomization of VA space */
37 FDPIC_FUNCPTRS = 0x0080000, /* userspace function ptrs point to
38 descriptors (signal handling) */
39 MMAP_PAGE_ZERO = 0x0100000,
40 ADDR_COMPAT_LAYOUT = 0x0200000,
41 READ_IMPLIES_EXEC = 0x0400000,
42 ADDR_LIMIT_32BIT = 0x0800000,
43 SHORT_INODE = 0x1000000,
44 WHOLE_SECONDS = 0x2000000,
45 STICKY_TIMEOUTS = 0x4000000,
46 ADDR_LIMIT_3GB = 0x8000000,
cb33da57
BS		 47};
48
49/*
50 * Personality types.
51 *
52 * These go in the low byte. Avoid using the top bit, it will
53 * conflict with error returns.
54 */
55enum {
d97ef72e
RH		 56 PER_LINUX = 0x0000,
57 PER_LINUX_32BIT = 0x0000 | ADDR_LIMIT_32BIT,
58 PER_LINUX_FDPIC = 0x0000 | FDPIC_FUNCPTRS,
59 PER_SVR4 = 0x0001 | STICKY_TIMEOUTS | MMAP_PAGE_ZERO,
60 PER_SVR3 = 0x0002 | STICKY_TIMEOUTS | SHORT_INODE,
61 PER_SCOSVR3 = 0x0003 | STICKY_TIMEOUTS | WHOLE_SECONDS | SHORT_INODE,
62 PER_OSR5 = 0x0003 | STICKY_TIMEOUTS | WHOLE_SECONDS,
63 PER_WYSEV386 = 0x0004 | STICKY_TIMEOUTS | SHORT_INODE,
64 PER_ISCR4 = 0x0005 | STICKY_TIMEOUTS,
65 PER_BSD = 0x0006,
66 PER_SUNOS = 0x0006 | STICKY_TIMEOUTS,
67 PER_XENIX = 0x0007 | STICKY_TIMEOUTS | SHORT_INODE,
68 PER_LINUX32 = 0x0008,
69 PER_LINUX32_3GB = 0x0008 | ADDR_LIMIT_3GB,
70 PER_IRIX32 = 0x0009 | STICKY_TIMEOUTS,/* IRIX5 32-bit */
71 PER_IRIXN32 = 0x000a | STICKY_TIMEOUTS,/* IRIX6 new 32-bit */
72 PER_IRIX64 = 0x000b | STICKY_TIMEOUTS,/* IRIX6 64-bit */
73 PER_RISCOS = 0x000c,
74 PER_SOLARIS = 0x000d | STICKY_TIMEOUTS,
75 PER_UW7 = 0x000e | STICKY_TIMEOUTS | MMAP_PAGE_ZERO,
76 PER_OSF4 = 0x000f, /* OSF/1 v4 */
77 PER_HPUX = 0x0010,
78 PER_MASK = 0x00ff,
cb33da57
BS		 79};
80
81/*
82 * Return the base personality without flags.
83 */
d97ef72e 84#define personality(pers) (pers & PER_MASK)
cb33da57 85
3cb10cfa
CL		 86int info_is_fdpic(struct image_info *info)
87{
88 return info->personality == PER_LINUX_FDPIC;
89}
90
83fb7adf
FB		 91/* this flag is uneffective under linux too, should be deleted */
92#ifndef MAP_DENYWRITE
93#define MAP_DENYWRITE 0
94#endif
95
96/* should probably go in elf.h */
97#ifndef ELIBBAD
98#define ELIBBAD 80
99#endif
100
28490231
RH		 101#ifdef TARGET_WORDS_BIGENDIAN
102#define ELF_DATA ELFDATA2MSB
103#else
104#define ELF_DATA ELFDATA2LSB
105#endif
106
a29f998d 107#ifdef TARGET_ABI_MIPSN32
918fc54c
PB		 108typedef abi_ullong target_elf_greg_t;
109#define tswapreg(ptr) tswap64(ptr)
a29f998d
PB		 110#else
111typedef abi_ulong target_elf_greg_t;
112#define tswapreg(ptr) tswapal(ptr)
113#endif
114
21e807fa 115#ifdef USE_UID16
1ddd592f
PB		 116typedef abi_ushort target_uid_t;
117typedef abi_ushort target_gid_t;
21e807fa 118#else
f8fd4fc4
PB		 119typedef abi_uint target_uid_t;
120typedef abi_uint target_gid_t;
21e807fa 121#endif
f8fd4fc4 122typedef abi_int target_pid_t;
21e807fa 123
30ac07d4
FB		 124#ifdef TARGET_I386
125
15338fd7
FB		 126#define ELF_PLATFORM get_elf_platform()
127
128static const char *get_elf_platform(void)
129{
130 static char elf_platform[] = "i386";
a2247f8e 131 int family = object_property_get_int(OBJECT(thread_cpu), "family", NULL);
15338fd7
FB		 132 if (family > 6)
133 family = 6;
134 if (family >= 3)
135 elf_platform[1] = '0' + family;
136 return elf_platform;
137}
138
139#define ELF_HWCAP get_elf_hwcap()
140
141static uint32_t get_elf_hwcap(void)
142{
a2247f8e
AF		 143 X86CPU *cpu = X86_CPU(thread_cpu);
144
145 return cpu->env.features[FEAT_1_EDX];
15338fd7
FB		 146}
147
84409ddb
JM		 148#ifdef TARGET_X86_64
149#define ELF_START_MMAP 0x2aaaaab000ULL
84409ddb
JM		 150
151#define ELF_CLASS ELFCLASS64
84409ddb
JM		 152#define ELF_ARCH EM_X86_64
153
154static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
155{
156 regs->rax = 0;
157 regs->rsp = infop->start_stack;
158 regs->rip = infop->entry;
159}
160
9edc5d79 161#define ELF_NREG 27
c227f099 162typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
9edc5d79
MW		 163
164/*
165 * Note that ELF_NREG should be 29 as there should be place for
166 * TRAPNO and ERR "registers" as well but linux doesn't dump
167 * those.
168 *
169 * See linux kernel: arch/x86/include/asm/elf.h
170 */
05390248 171static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUX86State *env)
9edc5d79
MW		 172{
173 (*regs)[0] = env->regs[15];
174 (*regs)[1] = env->regs[14];
175 (*regs)[2] = env->regs[13];
176 (*regs)[3] = env->regs[12];
177 (*regs)[4] = env->regs[R_EBP];
178 (*regs)[5] = env->regs[R_EBX];
179 (*regs)[6] = env->regs[11];
180 (*regs)[7] = env->regs[10];
181 (*regs)[8] = env->regs[9];
182 (*regs)[9] = env->regs[8];
183 (*regs)[10] = env->regs[R_EAX];
184 (*regs)[11] = env->regs[R_ECX];
185 (*regs)[12] = env->regs[R_EDX];
186 (*regs)[13] = env->regs[R_ESI];
187 (*regs)[14] = env->regs[R_EDI];
188 (*regs)[15] = env->regs[R_EAX]; /* XXX */
189 (*regs)[16] = env->eip;
190 (*regs)[17] = env->segs[R_CS].selector & 0xffff;
191 (*regs)[18] = env->eflags;
192 (*regs)[19] = env->regs[R_ESP];
193 (*regs)[20] = env->segs[R_SS].selector & 0xffff;
194 (*regs)[21] = env->segs[R_FS].selector & 0xffff;
195 (*regs)[22] = env->segs[R_GS].selector & 0xffff;
196 (*regs)[23] = env->segs[R_DS].selector & 0xffff;
197 (*regs)[24] = env->segs[R_ES].selector & 0xffff;
198 (*regs)[25] = env->segs[R_FS].selector & 0xffff;
199 (*regs)[26] = env->segs[R_GS].selector & 0xffff;
200}
201
84409ddb
JM		 202#else
203
30ac07d4
FB		 204#define ELF_START_MMAP 0x80000000
205
30ac07d4
FB		 206/*
207 * This is used to ensure we don't load something for the wrong architecture.
208 */
209#define elf_check_arch(x) ( ((x) == EM_386) || ((x) == EM_486) )
210
211/*
212 * These are used to set parameters in the core dumps.
213 */
d97ef72e 214#define ELF_CLASS ELFCLASS32
d97ef72e 215#define ELF_ARCH EM_386
30ac07d4 216
d97ef72e
RH		 217static inline void init_thread(struct target_pt_regs *regs,
218 struct image_info *infop)
b346ff46
FB		 219{
220 regs->esp = infop->start_stack;
221 regs->eip = infop->entry;
e5fe0c52
PB		 222
223 /* SVR4/i386 ABI (pages 3-31, 3-32) says that when the program
224 starts %edx contains a pointer to a function which might be
225 registered using `atexit'. This provides a mean for the
226 dynamic linker to call DT_FINI functions for shared libraries
227 that have been loaded before the code runs.
228
229 A value of 0 tells we have no such handler. */
230 regs->edx = 0;
b346ff46 231}
9edc5d79 232
9edc5d79 233#define ELF_NREG 17
c227f099 234typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
9edc5d79
MW		 235
236/*
237 * Note that ELF_NREG should be 19 as there should be place for
238 * TRAPNO and ERR "registers" as well but linux doesn't dump
239 * those.
240 *
241 * See linux kernel: arch/x86/include/asm/elf.h
242 */
05390248 243static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUX86State *env)
9edc5d79
MW		 244{
245 (*regs)[0] = env->regs[R_EBX];
246 (*regs)[1] = env->regs[R_ECX];
247 (*regs)[2] = env->regs[R_EDX];
248 (*regs)[3] = env->regs[R_ESI];
249 (*regs)[4] = env->regs[R_EDI];
250 (*regs)[5] = env->regs[R_EBP];
251 (*regs)[6] = env->regs[R_EAX];
252 (*regs)[7] = env->segs[R_DS].selector & 0xffff;
253 (*regs)[8] = env->segs[R_ES].selector & 0xffff;
254 (*regs)[9] = env->segs[R_FS].selector & 0xffff;
255 (*regs)[10] = env->segs[R_GS].selector & 0xffff;
256 (*regs)[11] = env->regs[R_EAX]; /* XXX */
257 (*regs)[12] = env->eip;
258 (*regs)[13] = env->segs[R_CS].selector & 0xffff;
259 (*regs)[14] = env->eflags;
260 (*regs)[15] = env->regs[R_ESP];
261 (*regs)[16] = env->segs[R_SS].selector & 0xffff;
262}
84409ddb 263#endif
b346ff46 264
9edc5d79 265#define USE_ELF_CORE_DUMP
d97ef72e 266#define ELF_EXEC_PAGESIZE 4096
b346ff46
FB		 267
268#endif
269
270#ifdef TARGET_ARM
271
24e76ff0
PM		 272#ifndef TARGET_AARCH64
273/* 32 bit ARM definitions */
274
b346ff46
FB		 275#define ELF_START_MMAP 0x80000000
276
b597c3f7 277#define ELF_ARCH EM_ARM
d97ef72e 278#define ELF_CLASS ELFCLASS32
b346ff46 279
d97ef72e
RH		 280static inline void init_thread(struct target_pt_regs *regs,
281 struct image_info *infop)
b346ff46 282{
992f48a0 283 abi_long stack = infop->start_stack;
b346ff46 284 memset(regs, 0, sizeof(*regs));
99033cae 285
167e4cdc
PM		 286 regs->uregs[16] = ARM_CPU_MODE_USR;
287 if (infop->entry & 1) {
288 regs->uregs[16] |= CPSR_T;
289 }
290 regs->uregs[15] = infop->entry & 0xfffffffe;
291 regs->uregs[13] = infop->start_stack;
2f619698 292 /* FIXME - what to for failure of get_user()? */
167e4cdc
PM		 293 get_user_ual(regs->uregs[2], stack + 8); /* envp */
294 get_user_ual(regs->uregs[1], stack + 4); /* envp */
a1516e92 295 /* XXX: it seems that r0 is zeroed after ! */
167e4cdc 296 regs->uregs[0] = 0;
e5fe0c52 297 /* For uClinux PIC binaries. */
863cf0b7 298 /* XXX: Linux does this only on ARM with no MMU (do we care ?) */
167e4cdc 299 regs->uregs[10] = infop->start_data;
3cb10cfa
CL		 300
301 /* Support ARM FDPIC. */
302 if (info_is_fdpic(infop)) {
303 /* As described in the ABI document, r7 points to the loadmap info
304 * prepared by the kernel. If an interpreter is needed, r8 points
305 * to the interpreter loadmap and r9 points to the interpreter
306 * PT_DYNAMIC info. If no interpreter is needed, r8 is zero, and
307 * r9 points to the main program PT_DYNAMIC info.
308 */
309 regs->uregs[7] = infop->loadmap_addr;
310 if (infop->interpreter_loadmap_addr) {
311 /* Executable is dynamically loaded. */
312 regs->uregs[8] = infop->interpreter_loadmap_addr;
313 regs->uregs[9] = infop->interpreter_pt_dynamic_addr;
314 } else {
315 regs->uregs[8] = 0;
316 regs->uregs[9] = infop->pt_dynamic_addr;
317 }
318 }
b346ff46
FB		 319}
320
edf8e2af 321#define ELF_NREG 18
c227f099 322typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
edf8e2af 323
05390248 324static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUARMState *env)
edf8e2af 325{
86cd7b2d
PB		 326 (*regs)[0] = tswapreg(env->regs[0]);
327 (*regs)[1] = tswapreg(env->regs[1]);
328 (*regs)[2] = tswapreg(env->regs[2]);
329 (*regs)[3] = tswapreg(env->regs[3]);
330 (*regs)[4] = tswapreg(env->regs[4]);
331 (*regs)[5] = tswapreg(env->regs[5]);
332 (*regs)[6] = tswapreg(env->regs[6]);
333 (*regs)[7] = tswapreg(env->regs[7]);
334 (*regs)[8] = tswapreg(env->regs[8]);
335 (*regs)[9] = tswapreg(env->regs[9]);
336 (*regs)[10] = tswapreg(env->regs[10]);
337 (*regs)[11] = tswapreg(env->regs[11]);
338 (*regs)[12] = tswapreg(env->regs[12]);
339 (*regs)[13] = tswapreg(env->regs[13]);
340 (*regs)[14] = tswapreg(env->regs[14]);
341 (*regs)[15] = tswapreg(env->regs[15]);
342
343 (*regs)[16] = tswapreg(cpsr_read((CPUARMState *)env));
344 (*regs)[17] = tswapreg(env->regs[0]); /* XXX */
edf8e2af
MW		 345}
346
30ac07d4 347#define USE_ELF_CORE_DUMP
d97ef72e 348#define ELF_EXEC_PAGESIZE 4096
30ac07d4 349
afce2927
FB		 350enum
351{
d97ef72e
RH		 352 ARM_HWCAP_ARM_SWP = 1 << 0,
353 ARM_HWCAP_ARM_HALF = 1 << 1,
354 ARM_HWCAP_ARM_THUMB = 1 << 2,
355 ARM_HWCAP_ARM_26BIT = 1 << 3,
356 ARM_HWCAP_ARM_FAST_MULT = 1 << 4,
357 ARM_HWCAP_ARM_FPA = 1 << 5,
358 ARM_HWCAP_ARM_VFP = 1 << 6,
359 ARM_HWCAP_ARM_EDSP = 1 << 7,
360 ARM_HWCAP_ARM_JAVA = 1 << 8,
361 ARM_HWCAP_ARM_IWMMXT = 1 << 9,
43ce393e
PM		 362 ARM_HWCAP_ARM_CRUNCH = 1 << 10,
363 ARM_HWCAP_ARM_THUMBEE = 1 << 11,
364 ARM_HWCAP_ARM_NEON = 1 << 12,
365 ARM_HWCAP_ARM_VFPv3 = 1 << 13,
366 ARM_HWCAP_ARM_VFPv3D16 = 1 << 14,
24682654
PM		 367 ARM_HWCAP_ARM_TLS = 1 << 15,
368 ARM_HWCAP_ARM_VFPv4 = 1 << 16,
369 ARM_HWCAP_ARM_IDIVA = 1 << 17,
370 ARM_HWCAP_ARM_IDIVT = 1 << 18,
371 ARM_HWCAP_ARM_VFPD32 = 1 << 19,
372 ARM_HWCAP_ARM_LPAE = 1 << 20,
373 ARM_HWCAP_ARM_EVTSTRM = 1 << 21,
afce2927
FB		 374};
375
ad6919dc
PM		 376enum {
377 ARM_HWCAP2_ARM_AES = 1 << 0,
378 ARM_HWCAP2_ARM_PMULL = 1 << 1,
379 ARM_HWCAP2_ARM_SHA1 = 1 << 2,
380 ARM_HWCAP2_ARM_SHA2 = 1 << 3,
381 ARM_HWCAP2_ARM_CRC32 = 1 << 4,
382};
383
6b1275ff
PM		 384/* The commpage only exists for 32 bit kernels */
385
ee947430 386#define ARM_COMMPAGE (intptr_t)0xffff0f00u
806d1021 387
ee947430
AB		 388static bool init_guest_commpage(void)
389{
390 void *want = g2h(ARM_COMMPAGE & -qemu_host_page_size);
391 void *addr = mmap(want, qemu_host_page_size, PROT_READ | PROT_WRITE,
392 MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
97cc7560 393
ee947430
AB		 394 if (addr == MAP_FAILED) {
395 perror("Allocating guest commpage");
396 exit(EXIT_FAILURE);
97cc7560 397 }
ee947430
AB		 398 if (addr != want) {
399 return false;
97cc7560
DDAG		 400 }
401
ee947430
AB		 402 /* Set kernel helper versions; rest of page is 0. */
403 __put_user(5, (uint32_t *)g2h(0xffff0ffcu));
97cc7560 404
ee947430 405 if (mprotect(addr, qemu_host_page_size, PROT_READ)) {
97cc7560 406 perror("Protecting guest commpage");
ee947430 407 exit(EXIT_FAILURE);
97cc7560 408 }
ee947430 409 return true;
97cc7560 410}
adf050b1
BC		 411
412#define ELF_HWCAP get_elf_hwcap()
ad6919dc 413#define ELF_HWCAP2 get_elf_hwcap2()
adf050b1
BC		 414
415static uint32_t get_elf_hwcap(void)
416{
a2247f8e 417 ARMCPU *cpu = ARM_CPU(thread_cpu);
adf050b1
BC		 418 uint32_t hwcaps = 0;
419
420 hwcaps |= ARM_HWCAP_ARM_SWP;
421 hwcaps |= ARM_HWCAP_ARM_HALF;
422 hwcaps |= ARM_HWCAP_ARM_THUMB;
423 hwcaps |= ARM_HWCAP_ARM_FAST_MULT;
adf050b1
BC		 424
425 /* probe for the extra features */
426#define GET_FEATURE(feat, hwcap) \
a2247f8e 427 do { if (arm_feature(&cpu->env, feat)) { hwcaps |= hwcap; } } while (0)
962fcbf2
RH		 428
429#define GET_FEATURE_ID(feat, hwcap) \
430 do { if (cpu_isar_feature(feat, cpu)) { hwcaps |= hwcap; } } while (0)
431
24682654
PM		 432 /* EDSP is in v5TE and above, but all our v5 CPUs are v5TE */
433 GET_FEATURE(ARM_FEATURE_V5, ARM_HWCAP_ARM_EDSP);
adf050b1
BC		 434 GET_FEATURE(ARM_FEATURE_IWMMXT, ARM_HWCAP_ARM_IWMMXT);
435 GET_FEATURE(ARM_FEATURE_THUMB2EE, ARM_HWCAP_ARM_THUMBEE);
436 GET_FEATURE(ARM_FEATURE_NEON, ARM_HWCAP_ARM_NEON);
24682654 437 GET_FEATURE(ARM_FEATURE_V6K, ARM_HWCAP_ARM_TLS);
bfa8a370 438 GET_FEATURE(ARM_FEATURE_LPAE, ARM_HWCAP_ARM_LPAE);
873b73c0
PM		 439 GET_FEATURE_ID(aa32_arm_div, ARM_HWCAP_ARM_IDIVA);
440 GET_FEATURE_ID(aa32_thumb_div, ARM_HWCAP_ARM_IDIVT);
bfa8a370
RH		 441 GET_FEATURE_ID(aa32_vfp, ARM_HWCAP_ARM_VFP);
442
443 if (cpu_isar_feature(aa32_fpsp_v3, cpu) ||
444 cpu_isar_feature(aa32_fpdp_v3, cpu)) {
445 hwcaps |= ARM_HWCAP_ARM_VFPv3;
446 if (cpu_isar_feature(aa32_simd_r32, cpu)) {
447 hwcaps |= ARM_HWCAP_ARM_VFPD32;
448 } else {
449 hwcaps |= ARM_HWCAP_ARM_VFPv3D16;
450 }
451 }
452 GET_FEATURE_ID(aa32_simdfmac, ARM_HWCAP_ARM_VFPv4);
adf050b1
BC		 453
454 return hwcaps;
455}
afce2927 456
ad6919dc
PM		 457static uint32_t get_elf_hwcap2(void)
458{
459 ARMCPU *cpu = ARM_CPU(thread_cpu);
460 uint32_t hwcaps = 0;
461
962fcbf2
RH		 462 GET_FEATURE_ID(aa32_aes, ARM_HWCAP2_ARM_AES);
463 GET_FEATURE_ID(aa32_pmull, ARM_HWCAP2_ARM_PMULL);
464 GET_FEATURE_ID(aa32_sha1, ARM_HWCAP2_ARM_SHA1);
465 GET_FEATURE_ID(aa32_sha2, ARM_HWCAP2_ARM_SHA2);
466 GET_FEATURE_ID(aa32_crc32, ARM_HWCAP2_ARM_CRC32);
ad6919dc
PM		 467 return hwcaps;
468}
469
470#undef GET_FEATURE
962fcbf2 471#undef GET_FEATURE_ID
ad6919dc 472
13ec4ec3
RH		 473#define ELF_PLATFORM get_elf_platform()
474
475static const char *get_elf_platform(void)
476{
477 CPUARMState *env = thread_cpu->env_ptr;
478
479#ifdef TARGET_WORDS_BIGENDIAN
480# define END "b"
481#else
482# define END "l"
483#endif
484
485 if (arm_feature(env, ARM_FEATURE_V8)) {
486 return "v8" END;
487 } else if (arm_feature(env, ARM_FEATURE_V7)) {
488 if (arm_feature(env, ARM_FEATURE_M)) {
489 return "v7m" END;
490 } else {
491 return "v7" END;
492 }
493 } else if (arm_feature(env, ARM_FEATURE_V6)) {
494 return "v6" END;
495 } else if (arm_feature(env, ARM_FEATURE_V5)) {
496 return "v5" END;
497 } else {
498 return "v4" END;
499 }
500
501#undef END
502}
503
24e76ff0
PM		 504#else
505/* 64 bit ARM definitions */
506#define ELF_START_MMAP 0x80000000
507
b597c3f7 508#define ELF_ARCH EM_AARCH64
24e76ff0 509#define ELF_CLASS ELFCLASS64
e20e3ec9
RH		 510#ifdef TARGET_WORDS_BIGENDIAN
511# define ELF_PLATFORM "aarch64_be"
512#else
513# define ELF_PLATFORM "aarch64"
514#endif
24e76ff0
PM		 515
516static inline void init_thread(struct target_pt_regs *regs,
517 struct image_info *infop)
518{
519 abi_long stack = infop->start_stack;
520 memset(regs, 0, sizeof(*regs));
521
522 regs->pc = infop->entry & ~0x3ULL;
523 regs->sp = stack;
524}
525
526#define ELF_NREG 34
527typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
528
529static void elf_core_copy_regs(target_elf_gregset_t *regs,
530 const CPUARMState *env)
531{
532 int i;
533
534 for (i = 0; i < 32; i++) {
535 (*regs)[i] = tswapreg(env->xregs[i]);
536 }
537 (*regs)[32] = tswapreg(env->pc);
538 (*regs)[33] = tswapreg(pstate_read((CPUARMState *)env));
539}
540
541#define USE_ELF_CORE_DUMP
542#define ELF_EXEC_PAGESIZE 4096
543
544enum {
545 ARM_HWCAP_A64_FP = 1 << 0,
546 ARM_HWCAP_A64_ASIMD = 1 << 1,
547 ARM_HWCAP_A64_EVTSTRM = 1 << 2,
548 ARM_HWCAP_A64_AES = 1 << 3,
549 ARM_HWCAP_A64_PMULL = 1 << 4,
550 ARM_HWCAP_A64_SHA1 = 1 << 5,
551 ARM_HWCAP_A64_SHA2 = 1 << 6,
552 ARM_HWCAP_A64_CRC32 = 1 << 7,
955f56d4
AB		 553 ARM_HWCAP_A64_ATOMICS = 1 << 8,
554 ARM_HWCAP_A64_FPHP = 1 << 9,
555 ARM_HWCAP_A64_ASIMDHP = 1 << 10,
556 ARM_HWCAP_A64_CPUID = 1 << 11,
557 ARM_HWCAP_A64_ASIMDRDM = 1 << 12,
558 ARM_HWCAP_A64_JSCVT = 1 << 13,
559 ARM_HWCAP_A64_FCMA = 1 << 14,
560 ARM_HWCAP_A64_LRCPC = 1 << 15,
561 ARM_HWCAP_A64_DCPOP = 1 << 16,
562 ARM_HWCAP_A64_SHA3 = 1 << 17,
563 ARM_HWCAP_A64_SM3 = 1 << 18,
564 ARM_HWCAP_A64_SM4 = 1 << 19,
565 ARM_HWCAP_A64_ASIMDDP = 1 << 20,
566 ARM_HWCAP_A64_SHA512 = 1 << 21,
567 ARM_HWCAP_A64_SVE = 1 << 22,
0083a1fa
RH		 568 ARM_HWCAP_A64_ASIMDFHM = 1 << 23,
569 ARM_HWCAP_A64_DIT = 1 << 24,
570 ARM_HWCAP_A64_USCAT = 1 << 25,
571 ARM_HWCAP_A64_ILRCPC = 1 << 26,
572 ARM_HWCAP_A64_FLAGM = 1 << 27,
573 ARM_HWCAP_A64_SSBS = 1 << 28,
574 ARM_HWCAP_A64_SB = 1 << 29,
575 ARM_HWCAP_A64_PACA = 1 << 30,
576 ARM_HWCAP_A64_PACG = 1UL << 31,
2041df4a
RH		 577
578 ARM_HWCAP2_A64_DCPODP = 1 << 0,
579 ARM_HWCAP2_A64_SVE2 = 1 << 1,
580 ARM_HWCAP2_A64_SVEAES = 1 << 2,
581 ARM_HWCAP2_A64_SVEPMULL = 1 << 3,
582 ARM_HWCAP2_A64_SVEBITPERM = 1 << 4,
583 ARM_HWCAP2_A64_SVESHA3 = 1 << 5,
584 ARM_HWCAP2_A64_SVESM4 = 1 << 6,
585 ARM_HWCAP2_A64_FLAGM2 = 1 << 7,
586 ARM_HWCAP2_A64_FRINT = 1 << 8,
24e76ff0
PM		 587};
588
2041df4a
RH		 589#define ELF_HWCAP get_elf_hwcap()
590#define ELF_HWCAP2 get_elf_hwcap2()
591
592#define GET_FEATURE_ID(feat, hwcap) \
593 do { if (cpu_isar_feature(feat, cpu)) { hwcaps |= hwcap; } } while (0)
24e76ff0
PM		 594
595static uint32_t get_elf_hwcap(void)
596{
597 ARMCPU *cpu = ARM_CPU(thread_cpu);
598 uint32_t hwcaps = 0;
599
600 hwcaps |= ARM_HWCAP_A64_FP;
601 hwcaps |= ARM_HWCAP_A64_ASIMD;
37020ff1 602 hwcaps |= ARM_HWCAP_A64_CPUID;
24e76ff0
PM		 603
604 /* probe for the extra features */
962fcbf2
RH		 605
606 GET_FEATURE_ID(aa64_aes, ARM_HWCAP_A64_AES);
607 GET_FEATURE_ID(aa64_pmull, ARM_HWCAP_A64_PMULL);
608 GET_FEATURE_ID(aa64_sha1, ARM_HWCAP_A64_SHA1);
609 GET_FEATURE_ID(aa64_sha256, ARM_HWCAP_A64_SHA2);
610 GET_FEATURE_ID(aa64_sha512, ARM_HWCAP_A64_SHA512);
611 GET_FEATURE_ID(aa64_crc32, ARM_HWCAP_A64_CRC32);
612 GET_FEATURE_ID(aa64_sha3, ARM_HWCAP_A64_SHA3);
613 GET_FEATURE_ID(aa64_sm3, ARM_HWCAP_A64_SM3);
614 GET_FEATURE_ID(aa64_sm4, ARM_HWCAP_A64_SM4);
5763190f 615 GET_FEATURE_ID(aa64_fp16, ARM_HWCAP_A64_FPHP | ARM_HWCAP_A64_ASIMDHP);
962fcbf2
RH		 616 GET_FEATURE_ID(aa64_atomics, ARM_HWCAP_A64_ATOMICS);
617 GET_FEATURE_ID(aa64_rdm, ARM_HWCAP_A64_ASIMDRDM);
618 GET_FEATURE_ID(aa64_dp, ARM_HWCAP_A64_ASIMDDP);
619 GET_FEATURE_ID(aa64_fcma, ARM_HWCAP_A64_FCMA);
cd208a1c 620 GET_FEATURE_ID(aa64_sve, ARM_HWCAP_A64_SVE);
29d26ab2 621 GET_FEATURE_ID(aa64_pauth, ARM_HWCAP_A64_PACA | ARM_HWCAP_A64_PACG);
1c9af3a9
RH		 622 GET_FEATURE_ID(aa64_fhm, ARM_HWCAP_A64_ASIMDFHM);
623 GET_FEATURE_ID(aa64_jscvt, ARM_HWCAP_A64_JSCVT);
9888bd1e 624 GET_FEATURE_ID(aa64_sb, ARM_HWCAP_A64_SB);
b89d9c98 625 GET_FEATURE_ID(aa64_condm_4, ARM_HWCAP_A64_FLAGM);
0d57b499 626 GET_FEATURE_ID(aa64_dcpop, ARM_HWCAP_A64_DCPOP);
2677cf9f 627 GET_FEATURE_ID(aa64_rcpc_8_3, ARM_HWCAP_A64_LRCPC);
a1229109 628 GET_FEATURE_ID(aa64_rcpc_8_4, ARM_HWCAP_A64_ILRCPC);
962fcbf2 629
2041df4a
RH		 630 return hwcaps;
631}
632
633static uint32_t get_elf_hwcap2(void)
634{
635 ARMCPU *cpu = ARM_CPU(thread_cpu);
636 uint32_t hwcaps = 0;
637
0d57b499 638 GET_FEATURE_ID(aa64_dcpodp, ARM_HWCAP2_A64_DCPODP);
2041df4a
RH		 639 GET_FEATURE_ID(aa64_condm_5, ARM_HWCAP2_A64_FLAGM2);
640 GET_FEATURE_ID(aa64_frint, ARM_HWCAP2_A64_FRINT);
24e76ff0
PM		 641
642 return hwcaps;
643}
644
2041df4a
RH		 645#undef GET_FEATURE_ID
646
24e76ff0
PM		 647#endif /* not TARGET_AARCH64 */
648#endif /* TARGET_ARM */
30ac07d4 649
853d6f7a 650#ifdef TARGET_SPARC
a315a145 651#ifdef TARGET_SPARC64
853d6f7a
FB		 652
653#define ELF_START_MMAP 0x80000000
cf973e46
AT		 654#define ELF_HWCAP (HWCAP_SPARC_FLUSH | HWCAP_SPARC_STBAR | HWCAP_SPARC_SWAP \
655 | HWCAP_SPARC_MULDIV | HWCAP_SPARC_V9)
992f48a0 656#ifndef TARGET_ABI32
cb33da57 657#define elf_check_arch(x) ( (x) == EM_SPARCV9 || (x) == EM_SPARC32PLUS )
992f48a0
BS		 658#else
659#define elf_check_arch(x) ( (x) == EM_SPARC32PLUS || (x) == EM_SPARC )
660#endif
853d6f7a 661
a315a145 662#define ELF_CLASS ELFCLASS64
5ef54116
FB		 663#define ELF_ARCH EM_SPARCV9
664
d97ef72e 665#define STACK_BIAS 2047
a315a145 666
d97ef72e
RH		 667static inline void init_thread(struct target_pt_regs *regs,
668 struct image_info *infop)
a315a145 669{
992f48a0 670#ifndef TARGET_ABI32
a315a145 671 regs->tstate = 0;
992f48a0 672#endif
a315a145
FB		 673 regs->pc = infop->entry;
674 regs->npc = regs->pc + 4;
675 regs->y = 0;
992f48a0
BS		 676#ifdef TARGET_ABI32
677 regs->u_regs[14] = infop->start_stack - 16 * 4;
678#else
cb33da57
BS		 679 if (personality(infop->personality) == PER_LINUX32)
680 regs->u_regs[14] = infop->start_stack - 16 * 4;
681 else
682 regs->u_regs[14] = infop->start_stack - 16 * 8 - STACK_BIAS;
992f48a0 683#endif
a315a145
FB		 684}
685
686#else
687#define ELF_START_MMAP 0x80000000
cf973e46
AT		 688#define ELF_HWCAP (HWCAP_SPARC_FLUSH | HWCAP_SPARC_STBAR | HWCAP_SPARC_SWAP \
689 | HWCAP_SPARC_MULDIV)
a315a145 690
853d6f7a 691#define ELF_CLASS ELFCLASS32
853d6f7a
FB		 692#define ELF_ARCH EM_SPARC
693
d97ef72e
RH		 694static inline void init_thread(struct target_pt_regs *regs,
695 struct image_info *infop)
853d6f7a 696{
f5155289
FB		 697 regs->psr = 0;
698 regs->pc = infop->entry;
699 regs->npc = regs->pc + 4;
700 regs->y = 0;
701 regs->u_regs[14] = infop->start_stack - 16 * 4;
853d6f7a
FB		 702}
703
a315a145 704#endif
853d6f7a
FB		 705#endif
706
67867308
FB		 707#ifdef TARGET_PPC
708
4ecd4d16 709#define ELF_MACHINE PPC_ELF_MACHINE
67867308
FB		 710#define ELF_START_MMAP 0x80000000
711
e85e7c6e 712#if defined(TARGET_PPC64) && !defined(TARGET_ABI32)
84409ddb
JM		 713
714#define elf_check_arch(x) ( (x) == EM_PPC64 )
715
d97ef72e 716#define ELF_CLASS ELFCLASS64
84409ddb
JM		 717
718#else
719
d97ef72e 720#define ELF_CLASS ELFCLASS32
84409ddb
JM		 721
722#endif
723
d97ef72e 724#define ELF_ARCH EM_PPC
67867308 725
df84e4f3
NF		 726/* Feature masks for the Aux Vector Hardware Capabilities (AT_HWCAP).
727 See arch/powerpc/include/asm/cputable.h. */
728enum {
3efa9a67 729 QEMU_PPC_FEATURE_32 = 0x80000000,
730 QEMU_PPC_FEATURE_64 = 0x40000000,
731 QEMU_PPC_FEATURE_601_INSTR = 0x20000000,
732 QEMU_PPC_FEATURE_HAS_ALTIVEC = 0x10000000,
733 QEMU_PPC_FEATURE_HAS_FPU = 0x08000000,
734 QEMU_PPC_FEATURE_HAS_MMU = 0x04000000,
735 QEMU_PPC_FEATURE_HAS_4xxMAC = 0x02000000,
736 QEMU_PPC_FEATURE_UNIFIED_CACHE = 0x01000000,
737 QEMU_PPC_FEATURE_HAS_SPE = 0x00800000,
738 QEMU_PPC_FEATURE_HAS_EFP_SINGLE = 0x00400000,
739 QEMU_PPC_FEATURE_HAS_EFP_DOUBLE = 0x00200000,
740 QEMU_PPC_FEATURE_NO_TB = 0x00100000,
741 QEMU_PPC_FEATURE_POWER4 = 0x00080000,
742 QEMU_PPC_FEATURE_POWER5 = 0x00040000,
743 QEMU_PPC_FEATURE_POWER5_PLUS = 0x00020000,
744 QEMU_PPC_FEATURE_CELL = 0x00010000,
745 QEMU_PPC_FEATURE_BOOKE = 0x00008000,
746 QEMU_PPC_FEATURE_SMT = 0x00004000,
747 QEMU_PPC_FEATURE_ICACHE_SNOOP = 0x00002000,
748 QEMU_PPC_FEATURE_ARCH_2_05 = 0x00001000,
749 QEMU_PPC_FEATURE_PA6T = 0x00000800,
750 QEMU_PPC_FEATURE_HAS_DFP = 0x00000400,
751 QEMU_PPC_FEATURE_POWER6_EXT = 0x00000200,
752 QEMU_PPC_FEATURE_ARCH_2_06 = 0x00000100,
753 QEMU_PPC_FEATURE_HAS_VSX = 0x00000080,
754 QEMU_PPC_FEATURE_PSERIES_PERFMON_COMPAT = 0x00000040,
755
756 QEMU_PPC_FEATURE_TRUE_LE = 0x00000002,
757 QEMU_PPC_FEATURE_PPC_LE = 0x00000001,
a60438dd
TM		 758
759 /* Feature definitions in AT_HWCAP2. */
760 QEMU_PPC_FEATURE2_ARCH_2_07 = 0x80000000, /* ISA 2.07 */
761 QEMU_PPC_FEATURE2_HAS_HTM = 0x40000000, /* Hardware Transactional Memory */
762 QEMU_PPC_FEATURE2_HAS_DSCR = 0x20000000, /* Data Stream Control Register */
763 QEMU_PPC_FEATURE2_HAS_EBB = 0x10000000, /* Event Base Branching */
764 QEMU_PPC_FEATURE2_HAS_ISEL = 0x08000000, /* Integer Select */
765 QEMU_PPC_FEATURE2_HAS_TAR = 0x04000000, /* Target Address Register */
24c373ec
LV		 766 QEMU_PPC_FEATURE2_VEC_CRYPTO = 0x02000000,
767 QEMU_PPC_FEATURE2_HTM_NOSC = 0x01000000,
be0c46d4 768 QEMU_PPC_FEATURE2_ARCH_3_00 = 0x00800000, /* ISA 3.00 */
24c373ec
LV		 769 QEMU_PPC_FEATURE2_HAS_IEEE128 = 0x00400000, /* VSX IEEE Bin Float 128-bit */
770 QEMU_PPC_FEATURE2_DARN = 0x00200000, /* darn random number insn */
771 QEMU_PPC_FEATURE2_SCV = 0x00100000, /* scv syscall */
772 QEMU_PPC_FEATURE2_HTM_NO_SUSPEND = 0x00080000, /* TM w/o suspended state */
df84e4f3
NF		 773};
774
775#define ELF_HWCAP get_elf_hwcap()
776
777static uint32_t get_elf_hwcap(void)
778{
a2247f8e 779 PowerPCCPU *cpu = POWERPC_CPU(thread_cpu);
df84e4f3
NF		 780 uint32_t features = 0;
781
782 /* We don't have to be terribly complete here; the high points are
783 Altivec/FP/SPE support. Anything else is just a bonus. */
d97ef72e 784#define GET_FEATURE(flag, feature) \
a2247f8e 785 do { if (cpu->env.insns_flags & flag) { features |= feature; } } while (0)
58eb5308
MW		 786#define GET_FEATURE2(flags, feature) \
787 do { \
788 if ((cpu->env.insns_flags2 & flags) == flags) { \
789 features |= feature; \
790 } \
791 } while (0)
3efa9a67 792 GET_FEATURE(PPC_64B, QEMU_PPC_FEATURE_64);
793 GET_FEATURE(PPC_FLOAT, QEMU_PPC_FEATURE_HAS_FPU);
794 GET_FEATURE(PPC_ALTIVEC, QEMU_PPC_FEATURE_HAS_ALTIVEC);
795 GET_FEATURE(PPC_SPE, QEMU_PPC_FEATURE_HAS_SPE);
796 GET_FEATURE(PPC_SPE_SINGLE, QEMU_PPC_FEATURE_HAS_EFP_SINGLE);
797 GET_FEATURE(PPC_SPE_DOUBLE, QEMU_PPC_FEATURE_HAS_EFP_DOUBLE);
798 GET_FEATURE(PPC_BOOKE, QEMU_PPC_FEATURE_BOOKE);
799 GET_FEATURE(PPC_405_MAC, QEMU_PPC_FEATURE_HAS_4xxMAC);
0e019746
TM		 800 GET_FEATURE2(PPC2_DFP, QEMU_PPC_FEATURE_HAS_DFP);
801 GET_FEATURE2(PPC2_VSX, QEMU_PPC_FEATURE_HAS_VSX);
802 GET_FEATURE2((PPC2_PERM_ISA206 | PPC2_DIVE_ISA206 | PPC2_ATOMIC_ISA206 |
803 PPC2_FP_CVT_ISA206 | PPC2_FP_TST_ISA206),
804 QEMU_PPC_FEATURE_ARCH_2_06);
df84e4f3 805#undef GET_FEATURE
0e019746 806#undef GET_FEATURE2
df84e4f3
NF		 807
808 return features;
809}
810
a60438dd
TM		 811#define ELF_HWCAP2 get_elf_hwcap2()
812
813static uint32_t get_elf_hwcap2(void)
814{
815 PowerPCCPU *cpu = POWERPC_CPU(thread_cpu);
816 uint32_t features = 0;
817
818#define GET_FEATURE(flag, feature) \
819 do { if (cpu->env.insns_flags & flag) { features |= feature; } } while (0)
820#define GET_FEATURE2(flag, feature) \
821 do { if (cpu->env.insns_flags2 & flag) { features |= feature; } } while (0)
822
823 GET_FEATURE(PPC_ISEL, QEMU_PPC_FEATURE2_HAS_ISEL);
824 GET_FEATURE2(PPC2_BCTAR_ISA207, QEMU_PPC_FEATURE2_HAS_TAR);
825 GET_FEATURE2((PPC2_BCTAR_ISA207 | PPC2_LSQ_ISA207 | PPC2_ALTIVEC_207 |
24c373ec
LV		 826 PPC2_ISA207S), QEMU_PPC_FEATURE2_ARCH_2_07 |
827 QEMU_PPC_FEATURE2_VEC_CRYPTO);
828 GET_FEATURE2(PPC2_ISA300, QEMU_PPC_FEATURE2_ARCH_3_00 |
829 QEMU_PPC_FEATURE2_DARN);
a60438dd
TM		 830
831#undef GET_FEATURE
832#undef GET_FEATURE2
833
834 return features;
835}
836
f5155289
FB		 837/*
838 * The requirements here are:
839 * - keep the final alignment of sp (sp & 0xf)
840 * - make sure the 32-bit value at the first 16 byte aligned position of
841 * AUXV is greater than 16 for glibc compatibility.
842 * AT_IGNOREPPC is used for that.
843 * - for compatibility with glibc ARCH_DLINFO must always be defined on PPC,
844 * even if DLINFO_ARCH_ITEMS goes to zero or is undefined.
845 */
0bccf03d 846#define DLINFO_ARCH_ITEMS 5
d97ef72e
RH		 847#define ARCH_DLINFO \
848 do { \
623e250a 849 PowerPCCPU *cpu = POWERPC_CPU(thread_cpu); \
d97ef72e 850 /* \
82991bed
PM		 851 * Handle glibc compatibility: these magic entries must \
852 * be at the lowest addresses in the final auxv. \
d97ef72e
RH		 853 */ \
854 NEW_AUX_ENT(AT_IGNOREPPC, AT_IGNOREPPC); \
855 NEW_AUX_ENT(AT_IGNOREPPC, AT_IGNOREPPC); \
82991bed
PM		 856 NEW_AUX_ENT(AT_DCACHEBSIZE, cpu->env.dcache_line_size); \
857 NEW_AUX_ENT(AT_ICACHEBSIZE, cpu->env.icache_line_size); \
858 NEW_AUX_ENT(AT_UCACHEBSIZE, 0); \
d97ef72e 859 } while (0)
f5155289 860
67867308
FB		 861static inline void init_thread(struct target_pt_regs *_regs, struct image_info *infop)
862{
67867308 863 _regs->gpr[1] = infop->start_stack;
e85e7c6e 864#if defined(TARGET_PPC64) && !defined(TARGET_ABI32)
d90b94cd 865 if (get_ppc64_abi(infop) < 2) {
2ccf97ec
PM		 866 uint64_t val;
867 get_user_u64(val, infop->entry + 8);
868 _regs->gpr[2] = val + infop->load_bias;
869 get_user_u64(val, infop->entry);
870 infop->entry = val + infop->load_bias;
d90b94cd
DK		 871 } else {
872 _regs->gpr[12] = infop->entry; /* r12 set to global entry address */
873 }
84409ddb 874#endif
67867308
FB		 875 _regs->nip = infop->entry;
876}
877
e2f3e741
NF		 878/* See linux kernel: arch/powerpc/include/asm/elf.h. */
879#define ELF_NREG 48
880typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
881
05390248 882static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUPPCState *env)
e2f3e741
NF		 883{
884 int i;
885 target_ulong ccr = 0;
886
887 for (i = 0; i < ARRAY_SIZE(env->gpr); i++) {
86cd7b2d 888 (*regs)[i] = tswapreg(env->gpr[i]);
e2f3e741
NF		 889 }
890
86cd7b2d
PB		 891 (*regs)[32] = tswapreg(env->nip);
892 (*regs)[33] = tswapreg(env->msr);
893 (*regs)[35] = tswapreg(env->ctr);
894 (*regs)[36] = tswapreg(env->lr);
895 (*regs)[37] = tswapreg(env->xer);
e2f3e741
NF		 896
897 for (i = 0; i < ARRAY_SIZE(env->crf); i++) {
898 ccr |= env->crf[i] << (32 - ((i + 1) * 4));
899 }
86cd7b2d 900 (*regs)[38] = tswapreg(ccr);
e2f3e741
NF		 901}
902
903#define USE_ELF_CORE_DUMP
d97ef72e 904#define ELF_EXEC_PAGESIZE 4096
67867308
FB		 905
906#endif
907
048f6b4d
FB		 908#ifdef TARGET_MIPS
909
910#define ELF_START_MMAP 0x80000000
911
388bb21a
TS		 912#ifdef TARGET_MIPS64
913#define ELF_CLASS ELFCLASS64
914#else
048f6b4d 915#define ELF_CLASS ELFCLASS32
388bb21a 916#endif
048f6b4d
FB		 917#define ELF_ARCH EM_MIPS
918
f72541f3
AM		 919#define elf_check_arch(x) ((x) == EM_MIPS || (x) == EM_NANOMIPS)
920
d97ef72e
RH		 921static inline void init_thread(struct target_pt_regs *regs,
922 struct image_info *infop)
048f6b4d 923{
623a930e 924 regs->cp0_status = 2 << CP0St_KSU;
048f6b4d
FB		 925 regs->cp0_epc = infop->entry;
926 regs->regs[29] = infop->start_stack;
927}
928
51e52606
NF		 929/* See linux kernel: arch/mips/include/asm/elf.h. */
930#define ELF_NREG 45
931typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
932
933/* See linux kernel: arch/mips/include/asm/reg.h. */
934enum {
935#ifdef TARGET_MIPS64
936 TARGET_EF_R0 = 0,
937#else
938 TARGET_EF_R0 = 6,
939#endif
940 TARGET_EF_R26 = TARGET_EF_R0 + 26,
941 TARGET_EF_R27 = TARGET_EF_R0 + 27,
942 TARGET_EF_LO = TARGET_EF_R0 + 32,
943 TARGET_EF_HI = TARGET_EF_R0 + 33,
944 TARGET_EF_CP0_EPC = TARGET_EF_R0 + 34,
945 TARGET_EF_CP0_BADVADDR = TARGET_EF_R0 + 35,
946 TARGET_EF_CP0_STATUS = TARGET_EF_R0 + 36,
947 TARGET_EF_CP0_CAUSE = TARGET_EF_R0 + 37
948};
949
950/* See linux kernel: arch/mips/kernel/process.c:elf_dump_regs. */
05390248 951static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUMIPSState *env)
51e52606
NF		 952{
953 int i;
954
955 for (i = 0; i < TARGET_EF_R0; i++) {
956 (*regs)[i] = 0;
957 }
958 (*regs)[TARGET_EF_R0] = 0;
959
960 for (i = 1; i < ARRAY_SIZE(env->active_tc.gpr); i++) {
a29f998d 961 (*regs)[TARGET_EF_R0 + i] = tswapreg(env->active_tc.gpr[i]);
51e52606
NF		 962 }
963
964 (*regs)[TARGET_EF_R26] = 0;
965 (*regs)[TARGET_EF_R27] = 0;
a29f998d
PB		 966 (*regs)[TARGET_EF_LO] = tswapreg(env->active_tc.LO[0]);
967 (*regs)[TARGET_EF_HI] = tswapreg(env->active_tc.HI[0]);
968 (*regs)[TARGET_EF_CP0_EPC] = tswapreg(env->active_tc.PC);
969 (*regs)[TARGET_EF_CP0_BADVADDR] = tswapreg(env->CP0_BadVAddr);
970 (*regs)[TARGET_EF_CP0_STATUS] = tswapreg(env->CP0_Status);
971 (*regs)[TARGET_EF_CP0_CAUSE] = tswapreg(env->CP0_Cause);
51e52606
NF		 972}
973
974#define USE_ELF_CORE_DUMP
388bb21a
TS		 975#define ELF_EXEC_PAGESIZE 4096
976
46a1ee4f
JC		 977/* See arch/mips/include/uapi/asm/hwcap.h. */
978enum {
979 HWCAP_MIPS_R6 = (1 << 0),
980 HWCAP_MIPS_MSA = (1 << 1),
981};
982
983#define ELF_HWCAP get_elf_hwcap()
984
985static uint32_t get_elf_hwcap(void)
986{
987 MIPSCPU *cpu = MIPS_CPU(thread_cpu);
988 uint32_t hwcaps = 0;
989
990#define GET_FEATURE(flag, hwcap) \
991 do { if (cpu->env.insn_flags & (flag)) { hwcaps |= hwcap; } } while (0)
992
993 GET_FEATURE(ISA_MIPS32R6 | ISA_MIPS64R6, HWCAP_MIPS_R6);
994 GET_FEATURE(ASE_MSA, HWCAP_MIPS_MSA);
995
996#undef GET_FEATURE
997
998 return hwcaps;
999}
1000
048f6b4d
FB		 1001#endif /* TARGET_MIPS */
1002
b779e29e
EI		 1003#ifdef TARGET_MICROBLAZE
1004
1005#define ELF_START_MMAP 0x80000000
1006
0d5d4699 1007#define elf_check_arch(x) ( (x) == EM_MICROBLAZE || (x) == EM_MICROBLAZE_OLD)
b779e29e
EI		 1008
1009#define ELF_CLASS ELFCLASS32
0d5d4699 1010#define ELF_ARCH EM_MICROBLAZE
b779e29e 1011
d97ef72e
RH		 1012static inline void init_thread(struct target_pt_regs *regs,
1013 struct image_info *infop)
b779e29e
EI		 1014{
1015 regs->pc = infop->entry;
1016 regs->r1 = infop->start_stack;
1017
1018}
1019
b779e29e
EI		 1020#define ELF_EXEC_PAGESIZE 4096
1021
e4cbd44d
EI		 1022#define USE_ELF_CORE_DUMP
1023#define ELF_NREG 38
1024typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
1025
1026/* See linux kernel: arch/mips/kernel/process.c:elf_dump_regs. */
05390248 1027static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUMBState *env)
e4cbd44d
EI		 1028{
1029 int i, pos = 0;
1030
1031 for (i = 0; i < 32; i++) {
86cd7b2d 1032 (*regs)[pos++] = tswapreg(env->regs[i]);
e4cbd44d
EI		 1033 }
1034
1035 for (i = 0; i < 6; i++) {
86cd7b2d 1036 (*regs)[pos++] = tswapreg(env->sregs[i]);
e4cbd44d
EI		 1037 }
1038}
1039
b779e29e
EI		 1040#endif /* TARGET_MICROBLAZE */
1041
a0a839b6
MV		 1042#ifdef TARGET_NIOS2
1043
1044#define ELF_START_MMAP 0x80000000
1045
1046#define elf_check_arch(x) ((x) == EM_ALTERA_NIOS2)
1047
1048#define ELF_CLASS ELFCLASS32
1049#define ELF_ARCH EM_ALTERA_NIOS2
1050
1051static void init_thread(struct target_pt_regs *regs, struct image_info *infop)
1052{
1053 regs->ea = infop->entry;
1054 regs->sp = infop->start_stack;
1055 regs->estatus = 0x3;
1056}
1057
1058#define ELF_EXEC_PAGESIZE 4096
1059
1060#define USE_ELF_CORE_DUMP
1061#define ELF_NREG 49
1062typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
1063
1064/* See linux kernel: arch/mips/kernel/process.c:elf_dump_regs. */
1065static void elf_core_copy_regs(target_elf_gregset_t *regs,
1066 const CPUNios2State *env)
1067{
1068 int i;
1069
1070 (*regs)[0] = -1;
1071 for (i = 1; i < 8; i++) /* r0-r7 */
1072 (*regs)[i] = tswapreg(env->regs[i + 7]);
1073
1074 for (i = 8; i < 16; i++) /* r8-r15 */
1075 (*regs)[i] = tswapreg(env->regs[i - 8]);
1076
1077 for (i = 16; i < 24; i++) /* r16-r23 */
1078 (*regs)[i] = tswapreg(env->regs[i + 7]);
1079 (*regs)[24] = -1; /* R_ET */
1080 (*regs)[25] = -1; /* R_BT */
1081 (*regs)[26] = tswapreg(env->regs[R_GP]);
1082 (*regs)[27] = tswapreg(env->regs[R_SP]);
1083 (*regs)[28] = tswapreg(env->regs[R_FP]);
1084 (*regs)[29] = tswapreg(env->regs[R_EA]);
1085 (*regs)[30] = -1; /* R_SSTATUS */
1086 (*regs)[31] = tswapreg(env->regs[R_RA]);
1087
1088 (*regs)[32] = tswapreg(env->regs[R_PC]);
1089
1090 (*regs)[33] = -1; /* R_STATUS */
1091 (*regs)[34] = tswapreg(env->regs[CR_ESTATUS]);
1092
1093 for (i = 35; i < 49; i++) /* ... */
1094 (*regs)[i] = -1;
1095}
1096
1097#endif /* TARGET_NIOS2 */
1098
d962783e
JL		 1099#ifdef TARGET_OPENRISC
1100
1101#define ELF_START_MMAP 0x08000000
1102
d962783e
JL		 1103#define ELF_ARCH EM_OPENRISC
1104#define ELF_CLASS ELFCLASS32
1105#define ELF_DATA ELFDATA2MSB
1106
1107static inline void init_thread(struct target_pt_regs *regs,
1108 struct image_info *infop)
1109{
1110 regs->pc = infop->entry;
1111 regs->gpr[1] = infop->start_stack;
1112}
1113
1114#define USE_ELF_CORE_DUMP
1115#define ELF_EXEC_PAGESIZE 8192
1116
1117/* See linux kernel arch/openrisc/include/asm/elf.h. */
1118#define ELF_NREG 34 /* gprs and pc, sr */
1119typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
1120
1121static void elf_core_copy_regs(target_elf_gregset_t *regs,
1122 const CPUOpenRISCState *env)
1123{
1124 int i;
1125
1126 for (i = 0; i < 32; i++) {
d89e71e8 1127 (*regs)[i] = tswapreg(cpu_get_gpr(env, i));
d962783e 1128 }
86cd7b2d 1129 (*regs)[32] = tswapreg(env->pc);
84775c43 1130 (*regs)[33] = tswapreg(cpu_get_sr(env));
d962783e
JL		 1131}
1132#define ELF_HWCAP 0
1133#define ELF_PLATFORM NULL
1134
1135#endif /* TARGET_OPENRISC */
1136
fdf9b3e8
FB		 1137#ifdef TARGET_SH4
1138
1139#define ELF_START_MMAP 0x80000000
1140
fdf9b3e8 1141#define ELF_CLASS ELFCLASS32
fdf9b3e8
FB		 1142#define ELF_ARCH EM_SH
1143
d97ef72e
RH		 1144static inline void init_thread(struct target_pt_regs *regs,
1145 struct image_info *infop)
fdf9b3e8 1146{
d97ef72e
RH		 1147 /* Check other registers XXXXX */
1148 regs->pc = infop->entry;
1149 regs->regs[15] = infop->start_stack;
fdf9b3e8
FB		 1150}
1151
7631c97e
NF		 1152/* See linux kernel: arch/sh/include/asm/elf.h. */
1153#define ELF_NREG 23
1154typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
1155
1156/* See linux kernel: arch/sh/include/asm/ptrace.h. */
1157enum {
1158 TARGET_REG_PC = 16,
1159 TARGET_REG_PR = 17,
1160 TARGET_REG_SR = 18,
1161 TARGET_REG_GBR = 19,
1162 TARGET_REG_MACH = 20,
1163 TARGET_REG_MACL = 21,
1164 TARGET_REG_SYSCALL = 22
1165};
1166
d97ef72e 1167static inline void elf_core_copy_regs(target_elf_gregset_t *regs,
05390248 1168 const CPUSH4State *env)
7631c97e
NF		 1169{
1170 int i;
1171
1172 for (i = 0; i < 16; i++) {
72cd500b 1173 (*regs)[i] = tswapreg(env->gregs[i]);
7631c97e
NF		 1174 }
1175
86cd7b2d
PB		 1176 (*regs)[TARGET_REG_PC] = tswapreg(env->pc);
1177 (*regs)[TARGET_REG_PR] = tswapreg(env->pr);
1178 (*regs)[TARGET_REG_SR] = tswapreg(env->sr);
1179 (*regs)[TARGET_REG_GBR] = tswapreg(env->gbr);
1180 (*regs)[TARGET_REG_MACH] = tswapreg(env->mach);
1181 (*regs)[TARGET_REG_MACL] = tswapreg(env->macl);
7631c97e
NF		 1182 (*regs)[TARGET_REG_SYSCALL] = 0; /* FIXME */
1183}
1184
1185#define USE_ELF_CORE_DUMP
fdf9b3e8
FB		 1186#define ELF_EXEC_PAGESIZE 4096
1187
e42fd944
RH		 1188enum {
1189 SH_CPU_HAS_FPU = 0x0001, /* Hardware FPU support */
1190 SH_CPU_HAS_P2_FLUSH_BUG = 0x0002, /* Need to flush the cache in P2 area */
1191 SH_CPU_HAS_MMU_PAGE_ASSOC = 0x0004, /* SH3: TLB way selection bit support */
1192 SH_CPU_HAS_DSP = 0x0008, /* SH-DSP: DSP support */
1193 SH_CPU_HAS_PERF_COUNTER = 0x0010, /* Hardware performance counters */
1194 SH_CPU_HAS_PTEA = 0x0020, /* PTEA register */
1195 SH_CPU_HAS_LLSC = 0x0040, /* movli.l/movco.l */
1196 SH_CPU_HAS_L2_CACHE = 0x0080, /* Secondary cache / URAM */
1197 SH_CPU_HAS_OP32 = 0x0100, /* 32-bit instruction support */
1198 SH_CPU_HAS_PTEAEX = 0x0200, /* PTE ASID Extension support */
1199};
1200
1201#define ELF_HWCAP get_elf_hwcap()
1202
1203static uint32_t get_elf_hwcap(void)
1204{
1205 SuperHCPU *cpu = SUPERH_CPU(thread_cpu);
1206 uint32_t hwcap = 0;
1207
1208 hwcap |= SH_CPU_HAS_FPU;
1209
1210 if (cpu->env.features & SH_FEATURE_SH4A) {
1211 hwcap |= SH_CPU_HAS_LLSC;
1212 }
1213
1214 return hwcap;
1215}
1216
fdf9b3e8
FB		 1217#endif
1218
48733d19
TS		 1219#ifdef TARGET_CRIS
1220
1221#define ELF_START_MMAP 0x80000000
1222
48733d19 1223#define ELF_CLASS ELFCLASS32
48733d19
TS		 1224#define ELF_ARCH EM_CRIS
1225
d97ef72e
RH		 1226static inline void init_thread(struct target_pt_regs *regs,
1227 struct image_info *infop)
48733d19 1228{
d97ef72e 1229 regs->erp = infop->entry;
48733d19
TS		 1230}
1231
48733d19
TS		 1232#define ELF_EXEC_PAGESIZE 8192
1233
1234#endif
1235
e6e5906b
PB		 1236#ifdef TARGET_M68K
1237
1238#define ELF_START_MMAP 0x80000000
1239
d97ef72e 1240#define ELF_CLASS ELFCLASS32
d97ef72e 1241#define ELF_ARCH EM_68K
e6e5906b
PB		 1242
1243/* ??? Does this need to do anything?
d97ef72e 1244 #define ELF_PLAT_INIT(_r) */
e6e5906b 1245
d97ef72e
RH		 1246static inline void init_thread(struct target_pt_regs *regs,
1247 struct image_info *infop)
e6e5906b
PB		 1248{
1249 regs->usp = infop->start_stack;
1250 regs->sr = 0;
1251 regs->pc = infop->entry;
1252}
1253
7a93cc55
NF		 1254/* See linux kernel: arch/m68k/include/asm/elf.h. */
1255#define ELF_NREG 20
1256typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
1257
05390248 1258static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUM68KState *env)
7a93cc55 1259{
86cd7b2d
PB		 1260 (*regs)[0] = tswapreg(env->dregs[1]);
1261 (*regs)[1] = tswapreg(env->dregs[2]);
1262 (*regs)[2] = tswapreg(env->dregs[3]);
1263 (*regs)[3] = tswapreg(env->dregs[4]);
1264 (*regs)[4] = tswapreg(env->dregs[5]);
1265 (*regs)[5] = tswapreg(env->dregs[6]);
1266 (*regs)[6] = tswapreg(env->dregs[7]);
1267 (*regs)[7] = tswapreg(env->aregs[0]);
1268 (*regs)[8] = tswapreg(env->aregs[1]);
1269 (*regs)[9] = tswapreg(env->aregs[2]);
1270 (*regs)[10] = tswapreg(env->aregs[3]);
1271 (*regs)[11] = tswapreg(env->aregs[4]);
1272 (*regs)[12] = tswapreg(env->aregs[5]);
1273 (*regs)[13] = tswapreg(env->aregs[6]);
1274 (*regs)[14] = tswapreg(env->dregs[0]);
1275 (*regs)[15] = tswapreg(env->aregs[7]);
1276 (*regs)[16] = tswapreg(env->dregs[0]); /* FIXME: orig_d0 */
1277 (*regs)[17] = tswapreg(env->sr);
1278 (*regs)[18] = tswapreg(env->pc);
7a93cc55
NF		 1279 (*regs)[19] = 0; /* FIXME: regs->format | regs->vector */
1280}
1281
1282#define USE_ELF_CORE_DUMP
d97ef72e 1283#define ELF_EXEC_PAGESIZE 8192
e6e5906b
PB		 1284
1285#endif
1286
7a3148a9
JM		 1287#ifdef TARGET_ALPHA
1288
1289#define ELF_START_MMAP (0x30000000000ULL)
1290
7a3148a9 1291#define ELF_CLASS ELFCLASS64
7a3148a9
JM		 1292#define ELF_ARCH EM_ALPHA
1293
d97ef72e
RH		 1294static inline void init_thread(struct target_pt_regs *regs,
1295 struct image_info *infop)
7a3148a9
JM		 1296{
1297 regs->pc = infop->entry;
1298 regs->ps = 8;
1299 regs->usp = infop->start_stack;
7a3148a9
JM		 1300}
1301
7a3148a9
JM		 1302#define ELF_EXEC_PAGESIZE 8192
1303
1304#endif /* TARGET_ALPHA */
1305
a4c075f1
UH		 1306#ifdef TARGET_S390X
1307
1308#define ELF_START_MMAP (0x20000000000ULL)
1309
a4c075f1
UH		 1310#define ELF_CLASS ELFCLASS64
1311#define ELF_DATA ELFDATA2MSB
1312#define ELF_ARCH EM_S390
1313
6d88baf1
DH		 1314#include "elf.h"
1315
1316#define ELF_HWCAP get_elf_hwcap()
1317
1318#define GET_FEATURE(_feat, _hwcap) \
1319 do { if (s390_has_feat(_feat)) { hwcap |= _hwcap; } } while (0)
1320
1321static uint32_t get_elf_hwcap(void)
1322{
1323 /*
1324 * Let's assume we always have esan3 and zarch.
1325 * 31-bit processes can use 64-bit registers (high gprs).
1326 */
1327 uint32_t hwcap = HWCAP_S390_ESAN3 | HWCAP_S390_ZARCH | HWCAP_S390_HIGH_GPRS;
1328
1329 GET_FEATURE(S390_FEAT_STFLE, HWCAP_S390_STFLE);
1330 GET_FEATURE(S390_FEAT_MSA, HWCAP_S390_MSA);
1331 GET_FEATURE(S390_FEAT_LONG_DISPLACEMENT, HWCAP_S390_LDISP);
1332 GET_FEATURE(S390_FEAT_EXTENDED_IMMEDIATE, HWCAP_S390_EIMM);
1333 if (s390_has_feat(S390_FEAT_EXTENDED_TRANSLATION_3) &&
1334 s390_has_feat(S390_FEAT_ETF3_ENH)) {
1335 hwcap |= HWCAP_S390_ETF3EH;
1336 }
1337 GET_FEATURE(S390_FEAT_VECTOR, HWCAP_S390_VXRS);
1338
1339 return hwcap;
1340}
1341
a4c075f1
UH		 1342static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
1343{
1344 regs->psw.addr = infop->entry;
1345 regs->psw.mask = PSW_MASK_64 | PSW_MASK_32;
1346 regs->gprs[15] = infop->start_stack;
1347}
1348
1349#endif /* TARGET_S390X */
1350
b16189b2
CG		 1351#ifdef TARGET_TILEGX
1352
1353/* 42 bits real used address, a half for user mode */
1354#define ELF_START_MMAP (0x00000020000000000ULL)
1355
1356#define elf_check_arch(x) ((x) == EM_TILEGX)
1357
1358#define ELF_CLASS ELFCLASS64
1359#define ELF_DATA ELFDATA2LSB
1360#define ELF_ARCH EM_TILEGX
1361
1362static inline void init_thread(struct target_pt_regs *regs,
1363 struct image_info *infop)
1364{
1365 regs->pc = infop->entry;
1366 regs->sp = infop->start_stack;
1367
1368}
1369
1370#define ELF_EXEC_PAGESIZE 65536 /* TILE-Gx page size is 64KB */
1371
1372#endif /* TARGET_TILEGX */
1373
47ae93cd
MC		 1374#ifdef TARGET_RISCV
1375
1376#define ELF_START_MMAP 0x80000000
1377#define ELF_ARCH EM_RISCV
1378
1379#ifdef TARGET_RISCV32
1380#define ELF_CLASS ELFCLASS32
1381#else
1382#define ELF_CLASS ELFCLASS64
1383#endif
1384
1385static inline void init_thread(struct target_pt_regs *regs,
1386 struct image_info *infop)
1387{
1388 regs->sepc = infop->entry;
1389 regs->sp = infop->start_stack;
1390}
1391
1392#define ELF_EXEC_PAGESIZE 4096
1393
1394#endif /* TARGET_RISCV */
1395
7c248bcd
RH		 1396#ifdef TARGET_HPPA
1397
1398#define ELF_START_MMAP 0x80000000
1399#define ELF_CLASS ELFCLASS32
1400#define ELF_ARCH EM_PARISC
1401#define ELF_PLATFORM "PARISC"
1402#define STACK_GROWS_DOWN 0
1403#define STACK_ALIGNMENT 64
1404
1405static inline void init_thread(struct target_pt_regs *regs,
1406 struct image_info *infop)
1407{
1408 regs->iaoq[0] = infop->entry;
1409 regs->iaoq[1] = infop->entry + 4;
1410 regs->gr[23] = 0;
1411 regs->gr[24] = infop->arg_start;
1412 regs->gr[25] = (infop->arg_end - infop->arg_start) / sizeof(abi_ulong);
1413 /* The top-of-stack contains a linkage buffer. */
1414 regs->gr[30] = infop->start_stack + 64;
1415 regs->gr[31] = infop->entry;
1416}
1417
1418#endif /* TARGET_HPPA */
1419
ba7651fb
MF		 1420#ifdef TARGET_XTENSA
1421
1422#define ELF_START_MMAP 0x20000000
1423
1424#define ELF_CLASS ELFCLASS32
1425#define ELF_ARCH EM_XTENSA
1426
1427static inline void init_thread(struct target_pt_regs *regs,
1428 struct image_info *infop)
1429{
1430 regs->windowbase = 0;
1431 regs->windowstart = 1;
1432 regs->areg[1] = infop->start_stack;
1433 regs->pc = infop->entry;
1434}
1435
1436/* See linux kernel: arch/xtensa/include/asm/elf.h. */
1437#define ELF_NREG 128
1438typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
1439
1440enum {
1441 TARGET_REG_PC,
1442 TARGET_REG_PS,
1443 TARGET_REG_LBEG,
1444 TARGET_REG_LEND,
1445 TARGET_REG_LCOUNT,
1446 TARGET_REG_SAR,
1447 TARGET_REG_WINDOWSTART,
1448 TARGET_REG_WINDOWBASE,
1449 TARGET_REG_THREADPTR,
1450 TARGET_REG_AR0 = 64,
1451};
1452
1453static void elf_core_copy_regs(target_elf_gregset_t *regs,
1454 const CPUXtensaState *env)
1455{
1456 unsigned i;
1457
1458 (*regs)[TARGET_REG_PC] = tswapreg(env->pc);
1459 (*regs)[TARGET_REG_PS] = tswapreg(env->sregs[PS] & ~PS_EXCM);
1460 (*regs)[TARGET_REG_LBEG] = tswapreg(env->sregs[LBEG]);
1461 (*regs)[TARGET_REG_LEND] = tswapreg(env->sregs[LEND]);
1462 (*regs)[TARGET_REG_LCOUNT] = tswapreg(env->sregs[LCOUNT]);
1463 (*regs)[TARGET_REG_SAR] = tswapreg(env->sregs[SAR]);
1464 (*regs)[TARGET_REG_WINDOWSTART] = tswapreg(env->sregs[WINDOW_START]);
1465 (*regs)[TARGET_REG_WINDOWBASE] = tswapreg(env->sregs[WINDOW_BASE]);
1466 (*regs)[TARGET_REG_THREADPTR] = tswapreg(env->uregs[THREADPTR]);
1467 xtensa_sync_phys_from_window((CPUXtensaState *)env);
1468 for (i = 0; i < env->config->nareg; ++i) {
1469 (*regs)[TARGET_REG_AR0 + i] = tswapreg(env->phys_regs[i]);
1470 }
1471}
1472
1473#define USE_ELF_CORE_DUMP
1474#define ELF_EXEC_PAGESIZE 4096
1475
1476#endif /* TARGET_XTENSA */
1477
15338fd7
FB		 1478#ifndef ELF_PLATFORM
1479#define ELF_PLATFORM (NULL)
1480#endif
1481
75be901c
PC		 1482#ifndef ELF_MACHINE
1483#define ELF_MACHINE ELF_ARCH
1484#endif
1485
d276a604
PC		 1486#ifndef elf_check_arch
1487#define elf_check_arch(x) ((x) == ELF_ARCH)
1488#endif
1489
15338fd7
FB		 1490#ifndef ELF_HWCAP
1491#define ELF_HWCAP 0
1492#endif
1493
7c4ee5bc
RH		 1494#ifndef STACK_GROWS_DOWN
1495#define STACK_GROWS_DOWN 1
1496#endif
1497
1498#ifndef STACK_ALIGNMENT
1499#define STACK_ALIGNMENT 16
1500#endif
1501
992f48a0 1502#ifdef TARGET_ABI32
cb33da57 1503#undef ELF_CLASS
992f48a0 1504#define ELF_CLASS ELFCLASS32
cb33da57
BS		 1505#undef bswaptls
1506#define bswaptls(ptr) bswap32s(ptr)
1507#endif
1508
31e31b8a 1509#include "elf.h"
09bfb054 1510
09bfb054
FB		 1511struct exec
1512{
d97ef72e
RH		 1513 unsigned int a_info; /* Use macros N_MAGIC, etc for access */
1514 unsigned int a_text; /* length of text, in bytes */
1515 unsigned int a_data; /* length of data, in bytes */
1516 unsigned int a_bss; /* length of uninitialized data area, in bytes */
1517 unsigned int a_syms; /* length of symbol table data in file, in bytes */
1518 unsigned int a_entry; /* start address */
1519 unsigned int a_trsize; /* length of relocation info for text, in bytes */
1520 unsigned int a_drsize; /* length of relocation info for data, in bytes */
09bfb054
FB		 1521};
1522
1523
1524#define N_MAGIC(exec) ((exec).a_info & 0xffff)
1525#define OMAGIC 0407
1526#define NMAGIC 0410
1527#define ZMAGIC 0413
1528#define QMAGIC 0314
1529
31e31b8a 1530/* Necessary parameters */
94894ff2
SB		 1531#define TARGET_ELF_EXEC_PAGESIZE \
1532 (((eppnt->p_align & ~qemu_host_page_mask) != 0) ? \
1533 TARGET_PAGE_SIZE : MAX(qemu_host_page_size, TARGET_PAGE_SIZE))
1534#define TARGET_ELF_PAGELENGTH(_v) ROUND_UP((_v), TARGET_ELF_EXEC_PAGESIZE)
79cb1f1d
YK		 1535#define TARGET_ELF_PAGESTART(_v) ((_v) & \
1536 ~(abi_ulong)(TARGET_ELF_EXEC_PAGESIZE-1))
54936004 1537#define TARGET_ELF_PAGEOFFSET(_v) ((_v) & (TARGET_ELF_EXEC_PAGESIZE-1))
31e31b8a 1538
e0d1673d 1539#define DLINFO_ITEMS 16
31e31b8a 1540
09bfb054
FB		 1541static inline void memcpy_fromfs(void * to, const void * from, unsigned long n)
1542{
d97ef72e 1543 memcpy(to, from, n);
09bfb054 1544}
d691f669 1545
31e31b8a 1546#ifdef BSWAP_NEEDED
92a31b1f 1547static void bswap_ehdr(struct elfhdr *ehdr)
31e31b8a 1548{
d97ef72e
RH		 1549 bswap16s(&ehdr->e_type); /* Object file type */
1550 bswap16s(&ehdr->e_machine); /* Architecture */
1551 bswap32s(&ehdr->e_version); /* Object file version */
1552 bswaptls(&ehdr->e_entry); /* Entry point virtual address */
1553 bswaptls(&ehdr->e_phoff); /* Program header table file offset */
1554 bswaptls(&ehdr->e_shoff); /* Section header table file offset */
1555 bswap32s(&ehdr->e_flags); /* Processor-specific flags */
1556 bswap16s(&ehdr->e_ehsize); /* ELF header size in bytes */
1557 bswap16s(&ehdr->e_phentsize); /* Program header table entry size */
1558 bswap16s(&ehdr->e_phnum); /* Program header table entry count */
1559 bswap16s(&ehdr->e_shentsize); /* Section header table entry size */
1560 bswap16s(&ehdr->e_shnum); /* Section header table entry count */
1561 bswap16s(&ehdr->e_shstrndx); /* Section header string table index */
31e31b8a
FB		 1562}
1563
991f8f0c 1564static void bswap_phdr(struct elf_phdr *phdr, int phnum)
31e31b8a 1565{
991f8f0c
RH		 1566 int i;
1567 for (i = 0; i < phnum; ++i, ++phdr) {
1568 bswap32s(&phdr->p_type); /* Segment type */
1569 bswap32s(&phdr->p_flags); /* Segment flags */
1570 bswaptls(&phdr->p_offset); /* Segment file offset */
1571 bswaptls(&phdr->p_vaddr); /* Segment virtual address */
1572 bswaptls(&phdr->p_paddr); /* Segment physical address */
1573 bswaptls(&phdr->p_filesz); /* Segment size in file */
1574 bswaptls(&phdr->p_memsz); /* Segment size in memory */
1575 bswaptls(&phdr->p_align); /* Segment alignment */
1576 }
31e31b8a 1577}
689f936f 1578
991f8f0c 1579static void bswap_shdr(struct elf_shdr *shdr, int shnum)
689f936f 1580{
991f8f0c
RH		 1581 int i;
1582 for (i = 0; i < shnum; ++i, ++shdr) {
1583 bswap32s(&shdr->sh_name);
1584 bswap32s(&shdr->sh_type);
1585 bswaptls(&shdr->sh_flags);
1586 bswaptls(&shdr->sh_addr);
1587 bswaptls(&shdr->sh_offset);
1588 bswaptls(&shdr->sh_size);
1589 bswap32s(&shdr->sh_link);
1590 bswap32s(&shdr->sh_info);
1591 bswaptls(&shdr->sh_addralign);
1592 bswaptls(&shdr->sh_entsize);
1593 }
689f936f
FB		 1594}
1595
7a3148a9 1596static void bswap_sym(struct elf_sym *sym)
689f936f
FB		 1597{
1598 bswap32s(&sym->st_name);
7a3148a9
JM		 1599 bswaptls(&sym->st_value);
1600 bswaptls(&sym->st_size);
689f936f
FB		 1601 bswap16s(&sym->st_shndx);
1602}
5dd0db52
SM		 1603
1604#ifdef TARGET_MIPS
1605static void bswap_mips_abiflags(Mips_elf_abiflags_v0 *abiflags)
1606{
1607 bswap16s(&abiflags->version);
1608 bswap32s(&abiflags->ases);
1609 bswap32s(&abiflags->isa_ext);
1610 bswap32s(&abiflags->flags1);
1611 bswap32s(&abiflags->flags2);
1612}
1613#endif
991f8f0c
RH		 1614#else
1615static inline void bswap_ehdr(struct elfhdr *ehdr) { }
1616static inline void bswap_phdr(struct elf_phdr *phdr, int phnum) { }
1617static inline void bswap_shdr(struct elf_shdr *shdr, int shnum) { }
1618static inline void bswap_sym(struct elf_sym *sym) { }
5dd0db52
SM		 1619#ifdef TARGET_MIPS
1620static inline void bswap_mips_abiflags(Mips_elf_abiflags_v0 *abiflags) { }
1621#endif
31e31b8a
FB		 1622#endif
1623
edf8e2af 1624#ifdef USE_ELF_CORE_DUMP
9349b4f9 1625static int elf_core_dump(int, const CPUArchState *);
edf8e2af 1626#endif /* USE_ELF_CORE_DUMP */
682674b8 1627static void load_symbols(struct elfhdr *hdr, int fd, abi_ulong load_bias);
edf8e2af 1628
9058abdd
RH		 1629/* Verify the portions of EHDR within E_IDENT for the target.
1630 This can be performed before bswapping the entire header. */
1631static bool elf_check_ident(struct elfhdr *ehdr)
1632{
1633 return (ehdr->e_ident[EI_MAG0] == ELFMAG0
1634 && ehdr->e_ident[EI_MAG1] == ELFMAG1
1635 && ehdr->e_ident[EI_MAG2] == ELFMAG2
1636 && ehdr->e_ident[EI_MAG3] == ELFMAG3
1637 && ehdr->e_ident[EI_CLASS] == ELF_CLASS
1638 && ehdr->e_ident[EI_DATA] == ELF_DATA
1639 && ehdr->e_ident[EI_VERSION] == EV_CURRENT);
1640}
1641
1642/* Verify the portions of EHDR outside of E_IDENT for the target.
1643 This has to wait until after bswapping the header. */
1644static bool elf_check_ehdr(struct elfhdr *ehdr)
1645{
1646 return (elf_check_arch(ehdr->e_machine)
1647 && ehdr->e_ehsize == sizeof(struct elfhdr)
1648 && ehdr->e_phentsize == sizeof(struct elf_phdr)
9058abdd
RH		 1649 && (ehdr->e_type == ET_EXEC || ehdr->e_type == ET_DYN));
1650}
1651
31e31b8a 1652/*
e5fe0c52 1653 * 'copy_elf_strings()' copies argument/envelope strings from user
31e31b8a
FB		 1654 * memory to free pages in kernel mem. These are in a format ready
1655 * to be put directly into the top of new user memory.
1656 *
1657 */
59baae9a
SB		 1658static abi_ulong copy_elf_strings(int argc, char **argv, char *scratch,
1659 abi_ulong p, abi_ulong stack_limit)
31e31b8a 1660{
59baae9a 1661 char *tmp;
7c4ee5bc 1662 int len, i;
59baae9a 1663 abi_ulong top = p;
31e31b8a
FB		 1664
1665 if (!p) {
d97ef72e 1666 return 0; /* bullet-proofing */
31e31b8a 1667 }
59baae9a 1668
7c4ee5bc
RH		 1669 if (STACK_GROWS_DOWN) {
1670 int offset = ((p - 1) % TARGET_PAGE_SIZE) + 1;
1671 for (i = argc - 1; i >= 0; --i) {
1672 tmp = argv[i];
1673 if (!tmp) {
1674 fprintf(stderr, "VFS: argc is wrong");
1675 exit(-1);
1676 }
1677 len = strlen(tmp) + 1;
1678 tmp += len;
59baae9a 1679
7c4ee5bc
RH		 1680 if (len > (p - stack_limit)) {
1681 return 0;
1682 }
1683 while (len) {
1684 int bytes_to_copy = (len > offset) ? offset : len;
1685 tmp -= bytes_to_copy;
1686 p -= bytes_to_copy;
1687 offset -= bytes_to_copy;
1688 len -= bytes_to_copy;
1689
1690 memcpy_fromfs(scratch + offset, tmp, bytes_to_copy);
1691
1692 if (offset == 0) {
1693 memcpy_to_target(p, scratch, top - p);
1694 top = p;
1695 offset = TARGET_PAGE_SIZE;
1696 }
1697 }
d97ef72e 1698 }
7c4ee5bc
RH		 1699 if (p != top) {
1700 memcpy_to_target(p, scratch + offset, top - p);
d97ef72e 1701 }
7c4ee5bc
RH		 1702 } else {
1703 int remaining = TARGET_PAGE_SIZE - (p % TARGET_PAGE_SIZE);
1704 for (i = 0; i < argc; ++i) {
1705 tmp = argv[i];
1706 if (!tmp) {
1707 fprintf(stderr, "VFS: argc is wrong");
1708 exit(-1);
1709 }
1710 len = strlen(tmp) + 1;
1711 if (len > (stack_limit - p)) {
1712 return 0;
1713 }
1714 while (len) {
1715 int bytes_to_copy = (len > remaining) ? remaining : len;
1716
1717 memcpy_fromfs(scratch + (p - top), tmp, bytes_to_copy);
1718
1719 tmp += bytes_to_copy;
1720 remaining -= bytes_to_copy;
1721 p += bytes_to_copy;
1722 len -= bytes_to_copy;
1723
1724 if (remaining == 0) {
1725 memcpy_to_target(top, scratch, p - top);
1726 top = p;
1727 remaining = TARGET_PAGE_SIZE;
1728 }
d97ef72e
RH		 1729 }
1730 }
7c4ee5bc
RH		 1731 if (p != top) {
1732 memcpy_to_target(top, scratch, p - top);
1733 }
59baae9a
SB		 1734 }
1735
31e31b8a
FB		 1736 return p;
1737}
1738
59baae9a
SB		 1739/* Older linux kernels provide up to MAX_ARG_PAGES (default: 32) of
1740 * argument/environment space. Newer kernels (>2.6.33) allow more,
1741 * dependent on stack size, but guarantee at least 32 pages for
1742 * backwards compatibility.
1743 */
1744#define STACK_LOWER_LIMIT (32 * TARGET_PAGE_SIZE)
1745
1746static abi_ulong setup_arg_pages(struct linux_binprm *bprm,
992f48a0 1747 struct image_info *info)
53a5960a 1748{
59baae9a 1749 abi_ulong size, error, guard;
31e31b8a 1750
703e0e89 1751 size = guest_stack_size;
59baae9a
SB		 1752 if (size < STACK_LOWER_LIMIT) {
1753 size = STACK_LOWER_LIMIT;
60dcbcb5
RH		 1754 }
1755 guard = TARGET_PAGE_SIZE;
1756 if (guard < qemu_real_host_page_size) {
1757 guard = qemu_real_host_page_size;
1758 }
1759
1760 error = target_mmap(0, size + guard, PROT_READ | PROT_WRITE,
1761 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
09bfb054 1762 if (error == -1) {
60dcbcb5 1763 perror("mmap stack");
09bfb054
FB		 1764 exit(-1);
1765 }
31e31b8a 1766
60dcbcb5 1767 /* We reserve one extra page at the top of the stack as guard. */
7c4ee5bc
RH		 1768 if (STACK_GROWS_DOWN) {
1769 target_mprotect(error, guard, PROT_NONE);
1770 info->stack_limit = error + guard;
1771 return info->stack_limit + size - sizeof(void *);
1772 } else {
1773 target_mprotect(error + size, guard, PROT_NONE);
1774 info->stack_limit = error + size;
1775 return error;
1776 }
31e31b8a
FB		 1777}
1778
cf129f3a
RH		 1779/* Map and zero the bss. We need to explicitly zero any fractional pages
1780 after the data section (i.e. bss). */
1781static void zero_bss(abi_ulong elf_bss, abi_ulong last_bss, int prot)
31e31b8a 1782{
cf129f3a
RH		 1783 uintptr_t host_start, host_map_start, host_end;
1784
1785 last_bss = TARGET_PAGE_ALIGN(last_bss);
1786
1787 /* ??? There is confusion between qemu_real_host_page_size and
1788 qemu_host_page_size here and elsewhere in target_mmap, which
1789 may lead to the end of the data section mapping from the file
1790 not being mapped. At least there was an explicit test and
1791 comment for that here, suggesting that "the file size must
1792 be known". The comment probably pre-dates the introduction
1793 of the fstat system call in target_mmap which does in fact
1794 find out the size. What isn't clear is if the workaround
1795 here is still actually needed. For now, continue with it,
1796 but merge it with the "normal" mmap that would allocate the bss. */
1797
1798 host_start = (uintptr_t) g2h(elf_bss);
1799 host_end = (uintptr_t) g2h(last_bss);
0c2d70c4 1800 host_map_start = REAL_HOST_PAGE_ALIGN(host_start);
cf129f3a
RH		 1801
1802 if (host_map_start < host_end) {
1803 void *p = mmap((void *)host_map_start, host_end - host_map_start,
1804 prot, MAP_FIXED | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
1805 if (p == MAP_FAILED) {
1806 perror("cannot mmap brk");
1807 exit(-1);
853d6f7a 1808 }
f46e9a0b 1809 }
853d6f7a 1810
f46e9a0b
TM		 1811 /* Ensure that the bss page(s) are valid */
1812 if ((page_get_flags(last_bss-1) & prot) != prot) {
1813 page_set_flags(elf_bss & TARGET_PAGE_MASK, last_bss, prot | PAGE_VALID);
cf129f3a 1814 }
31e31b8a 1815
cf129f3a
RH		 1816 if (host_start < host_map_start) {
1817 memset((void *)host_start, 0, host_map_start - host_start);
1818 }
1819}
53a5960a 1820
cf58affe
CL		 1821#ifdef TARGET_ARM
1822static int elf_is_fdpic(struct elfhdr *exec)
1823{
1824 return exec->e_ident[EI_OSABI] == ELFOSABI_ARM_FDPIC;
1825}
1826#else
a99856cd
CL		 1827/* Default implementation, always false. */
1828static int elf_is_fdpic(struct elfhdr *exec)
1829{
1830 return 0;
1831}
cf58affe 1832#endif
a99856cd 1833
1af02e83
MF		 1834static abi_ulong loader_build_fdpic_loadmap(struct image_info *info, abi_ulong sp)
1835{
1836 uint16_t n;
1837 struct elf32_fdpic_loadseg *loadsegs = info->loadsegs;
1838
1839 /* elf32_fdpic_loadseg */
1840 n = info->nsegs;
1841 while (n--) {
1842 sp -= 12;
1843 put_user_u32(loadsegs[n].addr, sp+0);
1844 put_user_u32(loadsegs[n].p_vaddr, sp+4);
1845 put_user_u32(loadsegs[n].p_memsz, sp+8);
1846 }
1847
1848 /* elf32_fdpic_loadmap */
1849 sp -= 4;
1850 put_user_u16(0, sp+0); /* version */
1851 put_user_u16(info->nsegs, sp+2); /* nsegs */
1852
1853 info->personality = PER_LINUX_FDPIC;
1854 info->loadmap_addr = sp;
1855
1856 return sp;
1857}
1af02e83 1858
992f48a0 1859static abi_ulong create_elf_tables(abi_ulong p, int argc, int envc,
8e62a717
RH		 1860 struct elfhdr *exec,
1861 struct image_info *info,
1862 struct image_info *interp_info)
31e31b8a 1863{
d97ef72e 1864 abi_ulong sp;
7c4ee5bc 1865 abi_ulong u_argc, u_argv, u_envp, u_auxv;
d97ef72e 1866 int size;
14322bad
LA		 1867 int i;
1868 abi_ulong u_rand_bytes;
1869 uint8_t k_rand_bytes[16];
d97ef72e
RH		 1870 abi_ulong u_platform;
1871 const char *k_platform;
1872 const int n = sizeof(elf_addr_t);
1873
1874 sp = p;
1af02e83 1875
1af02e83
MF		 1876 /* Needs to be before we load the env/argc/... */
1877 if (elf_is_fdpic(exec)) {
1878 /* Need 4 byte alignment for these structs */
1879 sp &= ~3;
1880 sp = loader_build_fdpic_loadmap(info, sp);
1881 info->other_info = interp_info;
1882 if (interp_info) {
1883 interp_info->other_info = info;
1884 sp = loader_build_fdpic_loadmap(interp_info, sp);
3cb10cfa
CL		 1885 info->interpreter_loadmap_addr = interp_info->loadmap_addr;
1886 info->interpreter_pt_dynamic_addr = interp_info->pt_dynamic_addr;
1887 } else {
1888 info->interpreter_loadmap_addr = 0;
1889 info->interpreter_pt_dynamic_addr = 0;
1af02e83
MF		 1890 }
1891 }
1af02e83 1892
d97ef72e
RH		 1893 u_platform = 0;
1894 k_platform = ELF_PLATFORM;
1895 if (k_platform) {
1896 size_t len = strlen(k_platform) + 1;
7c4ee5bc
RH		 1897 if (STACK_GROWS_DOWN) {
1898 sp -= (len + n - 1) & ~(n - 1);
1899 u_platform = sp;
1900 /* FIXME - check return value of memcpy_to_target() for failure */
1901 memcpy_to_target(sp, k_platform, len);
1902 } else {
1903 memcpy_to_target(sp, k_platform, len);
1904 u_platform = sp;
1905 sp += len + 1;
1906 }
1907 }
1908
1909 /* Provide 16 byte alignment for the PRNG, and basic alignment for
1910 * the argv and envp pointers.
1911 */
1912 if (STACK_GROWS_DOWN) {
1913 sp = QEMU_ALIGN_DOWN(sp, 16);
1914 } else {
1915 sp = QEMU_ALIGN_UP(sp, 16);
d97ef72e 1916 }
14322bad
LA		 1917
1918 /*
c6a2377f 1919 * Generate 16 random bytes for userspace PRNG seeding.
14322bad 1920 */
c6a2377f 1921 qemu_guest_getrandom_nofail(k_rand_bytes, sizeof(k_rand_bytes));
7c4ee5bc
RH		 1922 if (STACK_GROWS_DOWN) {
1923 sp -= 16;
1924 u_rand_bytes = sp;
1925 /* FIXME - check return value of memcpy_to_target() for failure */
1926 memcpy_to_target(sp, k_rand_bytes, 16);
1927 } else {
1928 memcpy_to_target(sp, k_rand_bytes, 16);
1929 u_rand_bytes = sp;
1930 sp += 16;
1931 }
14322bad 1932
d97ef72e
RH		 1933 size = (DLINFO_ITEMS + 1) * 2;
1934 if (k_platform)
1935 size += 2;
f5155289 1936#ifdef DLINFO_ARCH_ITEMS
d97ef72e 1937 size += DLINFO_ARCH_ITEMS * 2;
ad6919dc
PM		 1938#endif
1939#ifdef ELF_HWCAP2
1940 size += 2;
f5155289 1941#endif
f516511e
PM		 1942 info->auxv_len = size * n;
1943
d97ef72e 1944 size += envc + argc + 2;
b9329d4b 1945 size += 1; /* argc itself */
d97ef72e 1946 size *= n;
7c4ee5bc
RH		 1947
1948 /* Allocate space and finalize stack alignment for entry now. */
1949 if (STACK_GROWS_DOWN) {
1950 u_argc = QEMU_ALIGN_DOWN(sp - size, STACK_ALIGNMENT);
1951 sp = u_argc;
1952 } else {
1953 u_argc = sp;
1954 sp = QEMU_ALIGN_UP(sp + size, STACK_ALIGNMENT);
1955 }
1956
1957 u_argv = u_argc + n;
1958 u_envp = u_argv + (argc + 1) * n;
1959 u_auxv = u_envp + (envc + 1) * n;
1960 info->saved_auxv = u_auxv;
1961 info->arg_start = u_argv;
1962 info->arg_end = u_argv + argc * n;
d97ef72e
RH		 1963
1964 /* This is correct because Linux defines
1965 * elf_addr_t as Elf32_Off / Elf64_Off
1966 */
1967#define NEW_AUX_ENT(id, val) do { \
7c4ee5bc
RH		 1968 put_user_ual(id, u_auxv); u_auxv += n; \
1969 put_user_ual(val, u_auxv); u_auxv += n; \
d97ef72e
RH		 1970 } while(0)
1971
82991bed
PM		 1972#ifdef ARCH_DLINFO
1973 /*
1974 * ARCH_DLINFO must come first so platform specific code can enforce
1975 * special alignment requirements on the AUXV if necessary (eg. PPC).
1976 */
1977 ARCH_DLINFO;
1978#endif
f516511e
PM		 1979 /* There must be exactly DLINFO_ITEMS entries here, or the assert
1980 * on info->auxv_len will trigger.
1981 */
8e62a717 1982 NEW_AUX_ENT(AT_PHDR, (abi_ulong)(info->load_addr + exec->e_phoff));
d97ef72e
RH		 1983 NEW_AUX_ENT(AT_PHENT, (abi_ulong)(sizeof (struct elf_phdr)));
1984 NEW_AUX_ENT(AT_PHNUM, (abi_ulong)(exec->e_phnum));
33143c44
LV		 1985 if ((info->alignment & ~qemu_host_page_mask) != 0) {
1986 /* Target doesn't support host page size alignment */
1987 NEW_AUX_ENT(AT_PAGESZ, (abi_ulong)(TARGET_PAGE_SIZE));
1988 } else {
1989 NEW_AUX_ENT(AT_PAGESZ, (abi_ulong)(MAX(TARGET_PAGE_SIZE,
1990 qemu_host_page_size)));
1991 }
8e62a717 1992 NEW_AUX_ENT(AT_BASE, (abi_ulong)(interp_info ? interp_info->load_addr : 0));
d97ef72e 1993 NEW_AUX_ENT(AT_FLAGS, (abi_ulong)0);
8e62a717 1994 NEW_AUX_ENT(AT_ENTRY, info->entry);
d97ef72e
RH		 1995 NEW_AUX_ENT(AT_UID, (abi_ulong) getuid());
1996 NEW_AUX_ENT(AT_EUID, (abi_ulong) geteuid());
1997 NEW_AUX_ENT(AT_GID, (abi_ulong) getgid());
1998 NEW_AUX_ENT(AT_EGID, (abi_ulong) getegid());
1999 NEW_AUX_ENT(AT_HWCAP, (abi_ulong) ELF_HWCAP);
2000 NEW_AUX_ENT(AT_CLKTCK, (abi_ulong) sysconf(_SC_CLK_TCK));
14322bad 2001 NEW_AUX_ENT(AT_RANDOM, (abi_ulong) u_rand_bytes);
444cd5c3 2002 NEW_AUX_ENT(AT_SECURE, (abi_ulong) qemu_getauxval(AT_SECURE));
e0d1673d 2003 NEW_AUX_ENT(AT_EXECFN, info->file_string);
14322bad 2004
ad6919dc
PM		 2005#ifdef ELF_HWCAP2
2006 NEW_AUX_ENT(AT_HWCAP2, (abi_ulong) ELF_HWCAP2);
2007#endif
2008
7c4ee5bc 2009 if (u_platform) {
d97ef72e 2010 NEW_AUX_ENT(AT_PLATFORM, u_platform);
7c4ee5bc 2011 }
7c4ee5bc 2012 NEW_AUX_ENT (AT_NULL, 0);
f5155289
FB		 2013#undef NEW_AUX_ENT
2014
f516511e
PM		 2015 /* Check that our initial calculation of the auxv length matches how much
2016 * we actually put into it.
2017 */
2018 assert(info->auxv_len == u_auxv - info->saved_auxv);
7c4ee5bc
RH		 2019
2020 put_user_ual(argc, u_argc);
2021
2022 p = info->arg_strings;
2023 for (i = 0; i < argc; ++i) {
2024 put_user_ual(p, u_argv);
2025 u_argv += n;
2026 p += target_strlen(p) + 1;
2027 }
2028 put_user_ual(0, u_argv);
2029
2030 p = info->env_strings;
2031 for (i = 0; i < envc; ++i) {
2032 put_user_ual(p, u_envp);
2033 u_envp += n;
2034 p += target_strlen(p) + 1;
2035 }
2036 put_user_ual(0, u_envp);
edf8e2af 2037
d97ef72e 2038 return sp;
31e31b8a
FB		 2039}
2040
ee947430
AB		 2041#ifndef ARM_COMMPAGE
2042#define ARM_COMMPAGE 0
2043#define init_guest_commpage() true
8756e136 2044#endif
dce10401 2045
ee947430
AB		 2046static void pgb_fail_in_use(const char *image_name)
2047{
2048 error_report("%s: requires virtual address space that is in use "
2049 "(omit the -B option or choose a different value)",
2050 image_name);
2051 exit(EXIT_FAILURE);
2052}
dce10401 2053
ee947430
AB		 2054static void pgb_have_guest_base(const char *image_name, abi_ulong guest_loaddr,
2055 abi_ulong guest_hiaddr, long align)
2056{
2057 const int flags = MAP_ANONYMOUS | MAP_PRIVATE | MAP_NORESERVE;
2058 void *addr, *test;
2a53535a 2059
ee947430
AB		 2060 if (!QEMU_IS_ALIGNED(guest_base, align)) {
2061 fprintf(stderr, "Requested guest base 0x%lx does not satisfy "
2062 "host minimum alignment (0x%lx)\n",
2063 guest_base, align);
2064 exit(EXIT_FAILURE);
2065 }
2066
2067 /* Sanity check the guest binary. */
2068 if (reserved_va) {
2069 if (guest_hiaddr > reserved_va) {
2070 error_report("%s: requires more than reserved virtual "
2071 "address space (0x%" PRIx64 " > 0x%lx)",
2072 image_name, (uint64_t)guest_hiaddr, reserved_va);
2073 exit(EXIT_FAILURE);
2a53535a 2074 }
ee947430 2075 } else {
a932eec4 2076#if HOST_LONG_BITS < TARGET_ABI_BITS
ee947430
AB		 2077 if ((guest_hiaddr - guest_base) > ~(uintptr_t)0) {
2078 error_report("%s: requires more virtual address space "
2079 "than the host can provide (0x%" PRIx64 ")",
2080 image_name, (uint64_t)guest_hiaddr - guest_base);
2081 exit(EXIT_FAILURE);
2a53535a 2082 }
a932eec4 2083#endif
2a53535a 2084 }
2a53535a 2085
ee947430
AB		 2086 /*
2087 * Expand the allocation to the entire reserved_va.
2088 * Exclude the mmap_min_addr hole.
2089 */
2090 if (reserved_va) {
2091 guest_loaddr = (guest_base >= mmap_min_addr ? 0
2092 : mmap_min_addr - guest_base);
2093 guest_hiaddr = reserved_va;
2094 }
806d1021 2095
ee947430
AB		 2096 /* Reserve the address space for the binary, or reserved_va. */
2097 test = g2h(guest_loaddr);
2098 addr = mmap(test, guest_hiaddr - guest_loaddr, PROT_NONE, flags, -1, 0);
2099 if (test != addr) {
2100 pgb_fail_in_use(image_name);
2101 }
2102}
2103
2104/* Return value for guest_base, or -1 if no hole found. */
2105static uintptr_t pgb_find_hole(uintptr_t guest_loaddr, uintptr_t guest_size,
2106 long align)
2107{
2108 GSList *maps, *iter;
2109 uintptr_t this_start, this_end, next_start, brk;
2110 intptr_t ret = -1;
2111
2112 assert(QEMU_IS_ALIGNED(guest_loaddr, align));
2113
2114 maps = read_self_maps();
dce10401 2115
ee947430
AB		 2116 /* Read brk after we've read the maps, which will malloc. */
2117 brk = (uintptr_t)sbrk(0);
2118
2119 /* The first hole is before the first map entry. */
2120 this_start = mmap_min_addr;
2121
2122 for (iter = maps; iter;
2123 this_start = next_start, iter = g_slist_next(iter)) {
2124 uintptr_t align_start, hole_size;
2125
2126 this_end = ((MapInfo *)iter->data)->start;
2127 next_start = ((MapInfo *)iter->data)->end;
2128 align_start = ROUND_UP(this_start, align);
2129
2130 /* Skip holes that are too small. */
2131 if (align_start >= this_end) {
2132 continue;
2133 }
2134 hole_size = this_end - align_start;
2135 if (hole_size < guest_size) {
2136 continue;
aac362e4
LS		 2137 }
2138
ee947430
AB		 2139 /* If this hole contains brk, give ourselves some room to grow. */
2140 if (this_start <= brk && brk < this_end) {
2141 hole_size -= guest_size;
2142 if (sizeof(uintptr_t) == 8 && hole_size >= 1 * GiB) {
2143 align_start += 1 * GiB;
2144 } else if (hole_size >= 16 * MiB) {
2145 align_start += 16 * MiB;
2146 } else {
2147 align_start = (this_end - guest_size) & -align;
2148 if (align_start < this_start) {
2149 continue;
2150 }
806d1021 2151 }
806d1021
MI		 2152 }
2153
ee947430
AB		 2154 /* Record the lowest successful match. */
2155 if (ret < 0) {
2156 ret = align_start - guest_loaddr;
dce10401 2157 }
ee947430
AB		 2158 /* If this hole contains the identity map, select it. */
2159 if (align_start <= guest_loaddr &&
2160 guest_loaddr + guest_size <= this_end) {
2161 ret = 0;
b859040d 2162 }
ee947430
AB		 2163 /* If this hole ends above the identity map, stop looking. */
2164 if (this_end >= guest_loaddr) {
2165 break;
dce10401
MI		 2166 }
2167 }
ee947430 2168 free_self_maps(maps);
dce10401 2169
ee947430 2170 return ret;
dce10401
MI		 2171}
2172
ee947430
AB		 2173static void pgb_static(const char *image_name, abi_ulong orig_loaddr,
2174 abi_ulong orig_hiaddr, long align)
f3ed1f5d 2175{
ee947430
AB		 2176 uintptr_t loaddr = orig_loaddr;
2177 uintptr_t hiaddr = orig_hiaddr;
2178 uintptr_t addr;
f3ed1f5d 2179
ee947430
AB		 2180 if (hiaddr != orig_hiaddr) {
2181 error_report("%s: requires virtual address space that the "
2182 "host cannot provide (0x%" PRIx64 ")",
2183 image_name, (uint64_t)orig_hiaddr);
2184 exit(EXIT_FAILURE);
2185 }
f3ed1f5d 2186
ee947430
AB		 2187 loaddr &= -align;
2188 if (ARM_COMMPAGE) {
2189 /*
2190 * Extend the allocation to include the commpage.
2191 * For a 64-bit host, this is just 4GiB; for a 32-bit host,
2192 * the address arithmetic will wrap around, but the difference
2193 * will produce the correct allocation size.
2194 */
2195 if (sizeof(uintptr_t) == 8 || loaddr >= 0x80000000u) {
2196 hiaddr = (uintptr_t)4 << 30;
f3ed1f5d 2197 } else {
ee947430 2198 loaddr = ARM_COMMPAGE & -align;
f3ed1f5d 2199 }
ee947430 2200 }
dce10401 2201
ee947430
AB		 2202 addr = pgb_find_hole(loaddr, hiaddr - loaddr, align);
2203 if (addr == -1) {
2204 /*
2205 * If ARM_COMMPAGE, there *might* be a non-consecutive allocation
2206 * that can satisfy both. But as the normal arm32 link base address
2207 * is ~32k, and we extend down to include the commpage, making the
2208 * overhead only ~96k, this is unlikely.
dce10401 2209 */
ee947430
AB		 2210 error_report("%s: Unable to allocate %#zx bytes of "
2211 "virtual address space", image_name,
2212 (size_t)(hiaddr - loaddr));
2213 exit(EXIT_FAILURE);
2214 }
2215
2216 guest_base = addr;
2217}
dce10401 2218
ee947430
AB		 2219static void pgb_dynamic(const char *image_name, long align)
2220{
2221 /*
2222 * The executable is dynamic and does not require a fixed address.
2223 * All we need is a commpage that satisfies align.
2224 * If we do not need a commpage, leave guest_base == 0.
2225 */
2226 if (ARM_COMMPAGE) {
2227 uintptr_t addr, commpage;
2228
2229 /* 64-bit hosts should have used reserved_va. */
2230 assert(sizeof(uintptr_t) == 4);
2231
2232 /*
2233 * By putting the commpage at the first hole, that puts guest_base
2234 * just above that, and maximises the positive guest addresses.
2235 */
2236 commpage = ARM_COMMPAGE & -align;
2237 addr = pgb_find_hole(commpage, -commpage, align);
2238 assert(addr != -1);
2239 guest_base = addr;
2240 }
2241}
2242
2243static void pgb_reserved_va(const char *image_name, abi_ulong guest_loaddr,
2244 abi_ulong guest_hiaddr, long align)
2245{
2246 const int flags = MAP_ANONYMOUS | MAP_PRIVATE | MAP_NORESERVE;
2247 void *addr, *test;
2248
2249 if (guest_hiaddr > reserved_va) {
2250 error_report("%s: requires more than reserved virtual "
2251 "address space (0x%" PRIx64 " > 0x%lx)",
2252 image_name, (uint64_t)guest_hiaddr, reserved_va);
2253 exit(EXIT_FAILURE);
f3ed1f5d 2254 }
f3ed1f5d 2255
ee947430
AB		 2256 /* Widen the "image" to the entire reserved address space. */
2257 pgb_static(image_name, 0, reserved_va, align);
2258
2259 /* Reserve the memory on the host. */
2260 assert(guest_base != 0);
2261 test = g2h(0);
2262 addr = mmap(test, reserved_va, PROT_NONE, flags, -1, 0);
2263 if (addr == MAP_FAILED) {
2264 error_report("Unable to reserve 0x%lx bytes of virtual address "
2265 "space for use as guest address space (check your "
2266 "virtual memory ulimit setting or reserve less "
2267 "using -R option)", reserved_va);
2268 exit(EXIT_FAILURE);
2269 }
2270 assert(addr == test);
f3ed1f5d
PM		 2271}
2272
ee947430
AB		 2273void probe_guest_base(const char *image_name, abi_ulong guest_loaddr,
2274 abi_ulong guest_hiaddr)
2275{
2276 /* In order to use host shmat, we must be able to honor SHMLBA. */
2277 uintptr_t align = MAX(SHMLBA, qemu_host_page_size);
2278
2279 if (have_guest_base) {
2280 pgb_have_guest_base(image_name, guest_loaddr, guest_hiaddr, align);
2281 } else if (reserved_va) {
2282 pgb_reserved_va(image_name, guest_loaddr, guest_hiaddr, align);
2283 } else if (guest_loaddr) {
2284 pgb_static(image_name, guest_loaddr, guest_hiaddr, align);
2285 } else {
2286 pgb_dynamic(image_name, align);
2287 }
2288
2289 /* Reserve and initialize the commpage. */
2290 if (!init_guest_commpage()) {
2291 /*
2292 * With have_guest_base, the user has selected the address and
2293 * we are trying to work with that. Otherwise, we have selected
2294 * free space and init_guest_commpage must succeeded.
2295 */
2296 assert(have_guest_base);
2297 pgb_fail_in_use(image_name);
2298 }
2299
2300 assert(QEMU_IS_ALIGNED(guest_base, align));
2301 qemu_log_mask(CPU_LOG_PAGE, "Locating guest address space "
2302 "@ 0x%" PRIx64 "\n", (uint64_t)guest_base);
2303}
f3ed1f5d 2304
8e62a717 2305/* Load an ELF image into the address space.
31e31b8a 2306
8e62a717
RH		 2307 IMAGE_NAME is the filename of the image, to use in error messages.
2308 IMAGE_FD is the open file descriptor for the image.
2309
2310 BPRM_BUF is a copy of the beginning of the file; this of course
2311 contains the elf file header at offset 0. It is assumed that this
2312 buffer is sufficiently aligned to present no problems to the host
2313 in accessing data at aligned offsets within the buffer.
2314
2315 On return: INFO values will be filled in, as necessary or available. */
2316
2317static void load_elf_image(const char *image_name, int image_fd,
bf858897 2318 struct image_info *info, char **pinterp_name,
8e62a717 2319 char bprm_buf[BPRM_BUF_SIZE])
31e31b8a 2320{
8e62a717
RH		 2321 struct elfhdr *ehdr = (struct elfhdr *)bprm_buf;
2322 struct elf_phdr *phdr;
2323 abi_ulong load_addr, load_bias, loaddr, hiaddr, error;
2324 int i, retval;
2325 const char *errmsg;
5fafdf24 2326
8e62a717
RH		 2327 /* First of all, some simple consistency checks */
2328 errmsg = "Invalid ELF image for this architecture";
2329 if (!elf_check_ident(ehdr)) {
2330 goto exit_errmsg;
2331 }
2332 bswap_ehdr(ehdr);
2333 if (!elf_check_ehdr(ehdr)) {
2334 goto exit_errmsg;
d97ef72e 2335 }
5fafdf24 2336
8e62a717
RH		 2337 i = ehdr->e_phnum * sizeof(struct elf_phdr);
2338 if (ehdr->e_phoff + i <= BPRM_BUF_SIZE) {
2339 phdr = (struct elf_phdr *)(bprm_buf + ehdr->e_phoff);
9955ffac 2340 } else {
8e62a717
RH		 2341 phdr = (struct elf_phdr *) alloca(i);
2342 retval = pread(image_fd, phdr, i, ehdr->e_phoff);
9955ffac 2343 if (retval != i) {
8e62a717 2344 goto exit_read;
9955ffac 2345 }
d97ef72e 2346 }
8e62a717 2347 bswap_phdr(phdr, ehdr->e_phnum);
09bfb054 2348
1af02e83
MF		 2349 info->nsegs = 0;
2350 info->pt_dynamic_addr = 0;
1af02e83 2351
98c1076c
AB		 2352 mmap_lock();
2353
682674b8
RH		 2354 /* Find the maximum size of the image and allocate an appropriate
2355 amount of memory to handle that. */
2356 loaddr = -1, hiaddr = 0;
33143c44 2357 info->alignment = 0;
8e62a717
RH		 2358 for (i = 0; i < ehdr->e_phnum; ++i) {
2359 if (phdr[i].p_type == PT_LOAD) {
a93934fe 2360 abi_ulong a = phdr[i].p_vaddr - phdr[i].p_offset;
682674b8
RH		 2361 if (a < loaddr) {
2362 loaddr = a;
2363 }
ccf661f8 2364 a = phdr[i].p_vaddr + phdr[i].p_memsz;
682674b8
RH		 2365 if (a > hiaddr) {
2366 hiaddr = a;
2367 }
1af02e83 2368 ++info->nsegs;
33143c44 2369 info->alignment |= phdr[i].p_align;
682674b8
RH		 2370 }
2371 }
2372
6fd59449
RH		 2373 if (pinterp_name != NULL) {
2374 /*
2375 * This is the main executable.
2376 *
2377 * Reserve extra space for brk.
2378 * We hold on to this space while placing the interpreter
2379 * and the stack, lest they be placed immediately after
2380 * the data segment and block allocation from the brk.
2381 *
2382 * 16MB is chosen as "large enough" without being so large
2383 * as to allow the result to not fit with a 32-bit guest on
2384 * a 32-bit host.
2385 */
2386 info->reserve_brk = 16 * MiB;
2387 hiaddr += info->reserve_brk;
2388
2389 if (ehdr->e_type == ET_EXEC) {
2390 /*
2391 * Make sure that the low address does not conflict with
2392 * MMAP_MIN_ADDR or the QEMU application itself.
2393 */
2394 probe_guest_base(image_name, loaddr, hiaddr);
ee947430
AB		 2395 } else {
2396 /*
2397 * The binary is dynamic, but we still need to
2398 * select guest_base. In this case we pass a size.
2399 */
2400 probe_guest_base(image_name, 0, hiaddr - loaddr);
d97ef72e 2401 }
6fd59449
RH		 2402 }
2403
2404 /*
2405 * Reserve address space for all of this.
2406 *
2407 * In the case of ET_EXEC, we supply MAP_FIXED so that we get
2408 * exactly the address range that is required.
2409 *
2410 * Otherwise this is ET_DYN, and we are searching for a location
2411 * that can hold the memory space required. If the image is
2412 * pre-linked, LOADDR will be non-zero, and the kernel should
2413 * honor that address if it happens to be free.
2414 *
2415 * In both cases, we will overwrite pages in this range with mappings
2416 * from the executable.
2417 */
2418 load_addr = target_mmap(loaddr, hiaddr - loaddr, PROT_NONE,
2419 MAP_PRIVATE | MAP_ANON | MAP_NORESERVE |
2420 (ehdr->e_type == ET_EXEC ? MAP_FIXED : 0),
2421 -1, 0);
2422 if (load_addr == -1) {
2423 goto exit_perror;
d97ef72e 2424 }
682674b8 2425 load_bias = load_addr - loaddr;
d97ef72e 2426
a99856cd 2427 if (elf_is_fdpic(ehdr)) {
1af02e83 2428 struct elf32_fdpic_loadseg *loadsegs = info->loadsegs =
7267c094 2429 g_malloc(sizeof(*loadsegs) * info->nsegs);
1af02e83
MF		 2430
2431 for (i = 0; i < ehdr->e_phnum; ++i) {
2432 switch (phdr[i].p_type) {
2433 case PT_DYNAMIC:
2434 info->pt_dynamic_addr = phdr[i].p_vaddr + load_bias;
2435 break;
2436 case PT_LOAD:
2437 loadsegs->addr = phdr[i].p_vaddr + load_bias;
2438 loadsegs->p_vaddr = phdr[i].p_vaddr;
2439 loadsegs->p_memsz = phdr[i].p_memsz;
2440 ++loadsegs;
2441 break;
2442 }
2443 }
2444 }
1af02e83 2445
8e62a717 2446 info->load_bias = load_bias;
dc12567a
JK		 2447 info->code_offset = load_bias;
2448 info->data_offset = load_bias;
8e62a717
RH		 2449 info->load_addr = load_addr;
2450 info->entry = ehdr->e_entry + load_bias;
2451 info->start_code = -1;
2452 info->end_code = 0;
2453 info->start_data = -1;
2454 info->end_data = 0;
2455 info->brk = 0;
d8fd2954 2456 info->elf_flags = ehdr->e_flags;
8e62a717
RH		 2457
2458 for (i = 0; i < ehdr->e_phnum; i++) {
2459 struct elf_phdr *eppnt = phdr + i;
d97ef72e 2460 if (eppnt->p_type == PT_LOAD) {
94894ff2 2461 abi_ulong vaddr, vaddr_po, vaddr_ps, vaddr_ef, vaddr_em, vaddr_len;
d97ef72e 2462 int elf_prot = 0;
d97ef72e
RH		 2463
2464 if (eppnt->p_flags & PF_R) elf_prot = PROT_READ;
2465 if (eppnt->p_flags & PF_W) elf_prot |= PROT_WRITE;
2466 if (eppnt->p_flags & PF_X) elf_prot |= PROT_EXEC;
d97ef72e 2467
682674b8
RH		 2468 vaddr = load_bias + eppnt->p_vaddr;
2469 vaddr_po = TARGET_ELF_PAGEOFFSET(vaddr);
2470 vaddr_ps = TARGET_ELF_PAGESTART(vaddr);
94894ff2 2471 vaddr_len = TARGET_ELF_PAGELENGTH(eppnt->p_filesz + vaddr_po);
682674b8 2472
d87146bc
GM		 2473 /*
2474 * Some segments may be completely empty without any backing file
2475 * segment, in that case just let zero_bss allocate an empty buffer
2476 * for it.
2477 */
2478 if (eppnt->p_filesz != 0) {
2479 error = target_mmap(vaddr_ps, vaddr_len, elf_prot,
2480 MAP_PRIVATE | MAP_FIXED,
2481 image_fd, eppnt->p_offset - vaddr_po);
2482
2483 if (error == -1) {
2484 goto exit_perror;
2485 }
09bfb054 2486 }
09bfb054 2487
682674b8
RH		 2488 vaddr_ef = vaddr + eppnt->p_filesz;
2489 vaddr_em = vaddr + eppnt->p_memsz;
31e31b8a 2490
cf129f3a 2491 /* If the load segment requests extra zeros (e.g. bss), map it. */
682674b8
RH		 2492 if (vaddr_ef < vaddr_em) {
2493 zero_bss(vaddr_ef, vaddr_em, elf_prot);
cf129f3a 2494 }
8e62a717
RH		 2495
2496 /* Find the full program boundaries. */
2497 if (elf_prot & PROT_EXEC) {
2498 if (vaddr < info->start_code) {
2499 info->start_code = vaddr;
2500 }
2501 if (vaddr_ef > info->end_code) {
2502 info->end_code = vaddr_ef;
2503 }
2504 }
2505 if (elf_prot & PROT_WRITE) {
2506 if (vaddr < info->start_data) {
2507 info->start_data = vaddr;
2508 }
2509 if (vaddr_ef > info->end_data) {
2510 info->end_data = vaddr_ef;
2511 }
2512 if (vaddr_em > info->brk) {
2513 info->brk = vaddr_em;
2514 }
2515 }
bf858897
RH		 2516 } else if (eppnt->p_type == PT_INTERP && pinterp_name) {
2517 char *interp_name;
2518
2519 if (*pinterp_name) {
2520 errmsg = "Multiple PT_INTERP entries";
2521 goto exit_errmsg;
2522 }
2523 interp_name = malloc(eppnt->p_filesz);
2524 if (!interp_name) {
2525 goto exit_perror;
2526 }
2527
2528 if (eppnt->p_offset + eppnt->p_filesz <= BPRM_BUF_SIZE) {
2529 memcpy(interp_name, bprm_buf + eppnt->p_offset,
2530 eppnt->p_filesz);
2531 } else {
2532 retval = pread(image_fd, interp_name, eppnt->p_filesz,
2533 eppnt->p_offset);
2534 if (retval != eppnt->p_filesz) {
2535 goto exit_perror;
2536 }
2537 }
2538 if (interp_name[eppnt->p_filesz - 1] != 0) {
2539 errmsg = "Invalid PT_INTERP entry";
2540 goto exit_errmsg;
2541 }
2542 *pinterp_name = interp_name;
5dd0db52
SM		 2543#ifdef TARGET_MIPS
2544 } else if (eppnt->p_type == PT_MIPS_ABIFLAGS) {
2545 Mips_elf_abiflags_v0 abiflags;
2546 if (eppnt->p_filesz < sizeof(Mips_elf_abiflags_v0)) {
2547 errmsg = "Invalid PT_MIPS_ABIFLAGS entry";
2548 goto exit_errmsg;
2549 }
2550 if (eppnt->p_offset + eppnt->p_filesz <= BPRM_BUF_SIZE) {
2551 memcpy(&abiflags, bprm_buf + eppnt->p_offset,
2552 sizeof(Mips_elf_abiflags_v0));
2553 } else {
2554 retval = pread(image_fd, &abiflags, sizeof(Mips_elf_abiflags_v0),
2555 eppnt->p_offset);
2556 if (retval != sizeof(Mips_elf_abiflags_v0)) {
2557 goto exit_perror;
2558 }
2559 }
2560 bswap_mips_abiflags(&abiflags);
c94cb6c9 2561 info->fp_abi = abiflags.fp_abi;
5dd0db52 2562#endif
d97ef72e 2563 }
682674b8 2564 }
5fafdf24 2565
8e62a717
RH		 2566 if (info->end_data == 0) {
2567 info->start_data = info->end_code;
2568 info->end_data = info->end_code;
2569 info->brk = info->end_code;
2570 }
2571
682674b8 2572 if (qemu_log_enabled()) {
8e62a717 2573 load_symbols(ehdr, image_fd, load_bias);
682674b8 2574 }
31e31b8a 2575
98c1076c
AB		 2576 mmap_unlock();
2577
8e62a717
RH		 2578 close(image_fd);
2579 return;
2580
2581 exit_read:
2582 if (retval >= 0) {
2583 errmsg = "Incomplete read of file header";
2584 goto exit_errmsg;
2585 }
2586 exit_perror:
2587 errmsg = strerror(errno);
2588 exit_errmsg:
2589 fprintf(stderr, "%s: %s\n", image_name, errmsg);
2590 exit(-1);
2591}
2592
2593static void load_elf_interp(const char *filename, struct image_info *info,
2594 char bprm_buf[BPRM_BUF_SIZE])
2595{
2596 int fd, retval;
2597
2598 fd = open(path(filename), O_RDONLY);
2599 if (fd < 0) {
2600 goto exit_perror;
2601 }
31e31b8a 2602
8e62a717
RH		 2603 retval = read(fd, bprm_buf, BPRM_BUF_SIZE);
2604 if (retval < 0) {
2605 goto exit_perror;
2606 }
2607 if (retval < BPRM_BUF_SIZE) {
2608 memset(bprm_buf + retval, 0, BPRM_BUF_SIZE - retval);
2609 }
2610
bf858897 2611 load_elf_image(filename, fd, info, NULL, bprm_buf);
8e62a717
RH		 2612 return;
2613
2614 exit_perror:
2615 fprintf(stderr, "%s: %s\n", filename, strerror(errno));
2616 exit(-1);
31e31b8a
FB		 2617}
2618
49918a75
PB		 2619static int symfind(const void *s0, const void *s1)
2620{
c7c530cd 2621 target_ulong addr = *(target_ulong *)s0;
49918a75
PB		 2622 struct elf_sym *sym = (struct elf_sym *)s1;
2623 int result = 0;
c7c530cd 2624 if (addr < sym->st_value) {
49918a75 2625 result = -1;
c7c530cd 2626 } else if (addr >= sym->st_value + sym->st_size) {
49918a75
PB		 2627 result = 1;
2628 }
2629 return result;
2630}
2631
2632static const char *lookup_symbolxx(struct syminfo *s, target_ulong orig_addr)
2633{
2634#if ELF_CLASS == ELFCLASS32
2635 struct elf_sym *syms = s->disas_symtab.elf32;
2636#else
2637 struct elf_sym *syms = s->disas_symtab.elf64;
2638#endif
2639
2640 // binary search
49918a75
PB		 2641 struct elf_sym *sym;
2642
c7c530cd 2643 sym = bsearch(&orig_addr, syms, s->disas_num_syms, sizeof(*syms), symfind);
7cba04f6 2644 if (sym != NULL) {
49918a75
PB		 2645 return s->disas_strtab + sym->st_name;
2646 }
2647
2648 return "";
2649}
2650
2651/* FIXME: This should use elf_ops.h */
2652static int symcmp(const void *s0, const void *s1)
2653{
2654 struct elf_sym *sym0 = (struct elf_sym *)s0;
2655 struct elf_sym *sym1 = (struct elf_sym *)s1;
2656 return (sym0->st_value < sym1->st_value)
2657 ? -1
2658 : ((sym0->st_value > sym1->st_value) ? 1 : 0);
2659}
2660
689f936f 2661/* Best attempt to load symbols from this ELF object. */
682674b8 2662static void load_symbols(struct elfhdr *hdr, int fd, abi_ulong load_bias)
689f936f 2663{
682674b8 2664 int i, shnum, nsyms, sym_idx = 0, str_idx = 0;
1e06262d 2665 uint64_t segsz;
682674b8 2666 struct elf_shdr *shdr;
b9475279
CV		 2667 char *strings = NULL;
2668 struct syminfo *s = NULL;
2669 struct elf_sym *new_syms, *syms = NULL;
689f936f 2670
682674b8
RH		 2671 shnum = hdr->e_shnum;
2672 i = shnum * sizeof(struct elf_shdr);
2673 shdr = (struct elf_shdr *)alloca(i);
2674 if (pread(fd, shdr, i, hdr->e_shoff) != i) {
2675 return;
2676 }
2677
2678 bswap_shdr(shdr, shnum);
2679 for (i = 0; i < shnum; ++i) {
2680 if (shdr[i].sh_type == SHT_SYMTAB) {
2681 sym_idx = i;
2682 str_idx = shdr[i].sh_link;
49918a75
PB		 2683 goto found;
2684 }
689f936f 2685 }
682674b8
RH		 2686
2687 /* There will be no symbol table if the file was stripped. */
2688 return;
689f936f
FB		 2689
2690 found:
682674b8 2691 /* Now know where the strtab and symtab are. Snarf them. */
0ef9ea29 2692 s = g_try_new(struct syminfo, 1);
682674b8 2693 if (!s) {
b9475279 2694 goto give_up;
682674b8 2695 }
5fafdf24 2696
1e06262d
PM		 2697 segsz = shdr[str_idx].sh_size;
2698 s->disas_strtab = strings = g_try_malloc(segsz);
2699 if (!strings ||
2700 pread(fd, strings, segsz, shdr[str_idx].sh_offset) != segsz) {
b9475279 2701 goto give_up;
682674b8 2702 }
49918a75 2703
1e06262d
PM		 2704 segsz = shdr[sym_idx].sh_size;
2705 syms = g_try_malloc(segsz);
2706 if (!syms || pread(fd, syms, segsz, shdr[sym_idx].sh_offset) != segsz) {
b9475279 2707 goto give_up;
682674b8 2708 }
31e31b8a 2709
1e06262d
PM		 2710 if (segsz / sizeof(struct elf_sym) > INT_MAX) {
2711 /* Implausibly large symbol table: give up rather than ploughing
2712 * on with the number of symbols calculation overflowing
2713 */
2714 goto give_up;
2715 }
2716 nsyms = segsz / sizeof(struct elf_sym);
682674b8 2717 for (i = 0; i < nsyms; ) {
49918a75 2718 bswap_sym(syms + i);
682674b8
RH		 2719 /* Throw away entries which we do not need. */
2720 if (syms[i].st_shndx == SHN_UNDEF
2721 || syms[i].st_shndx >= SHN_LORESERVE
2722 || ELF_ST_TYPE(syms[i].st_info) != STT_FUNC) {
2723 if (i < --nsyms) {
49918a75
PB		 2724 syms[i] = syms[nsyms];
2725 }
682674b8 2726 } else {
49918a75 2727#if defined(TARGET_ARM) || defined (TARGET_MIPS)
682674b8
RH		 2728 /* The bottom address bit marks a Thumb or MIPS16 symbol. */
2729 syms[i].st_value &= ~(target_ulong)1;
0774bed1 2730#endif
682674b8
RH		 2731 syms[i].st_value += load_bias;
2732 i++;
2733 }
0774bed1 2734 }
49918a75 2735
b9475279
CV		 2736 /* No "useful" symbol. */
2737 if (nsyms == 0) {
2738 goto give_up;
2739 }
2740
5d5c9930
RH		 2741 /* Attempt to free the storage associated with the local symbols
2742 that we threw away. Whether or not this has any effect on the
2743 memory allocation depends on the malloc implementation and how
2744 many symbols we managed to discard. */
0ef9ea29 2745 new_syms = g_try_renew(struct elf_sym, syms, nsyms);
8d79de6e 2746 if (new_syms == NULL) {
b9475279 2747 goto give_up;
5d5c9930 2748 }
8d79de6e 2749 syms = new_syms;
5d5c9930 2750
49918a75 2751 qsort(syms, nsyms, sizeof(*syms), symcmp);
689f936f 2752
49918a75
PB		 2753 s->disas_num_syms = nsyms;
2754#if ELF_CLASS == ELFCLASS32
2755 s->disas_symtab.elf32 = syms;
49918a75
PB		 2756#else
2757 s->disas_symtab.elf64 = syms;
49918a75 2758#endif
682674b8 2759 s->lookup_symbol = lookup_symbolxx;
e80cfcfc
FB		 2760 s->next = syminfos;
2761 syminfos = s;
b9475279
CV		 2762
2763 return;
2764
2765give_up:
0ef9ea29
PM		 2766 g_free(s);
2767 g_free(strings);
2768 g_free(syms);
689f936f 2769}
31e31b8a 2770
768fe76e
YS		 2771uint32_t get_elf_eflags(int fd)
2772{
2773 struct elfhdr ehdr;
2774 off_t offset;
2775 int ret;
2776
2777 /* Read ELF header */
2778 offset = lseek(fd, 0, SEEK_SET);
2779 if (offset == (off_t) -1) {
2780 return 0;
2781 }
2782 ret = read(fd, &ehdr, sizeof(ehdr));
2783 if (ret < sizeof(ehdr)) {
2784 return 0;
2785 }
2786 offset = lseek(fd, offset, SEEK_SET);
2787 if (offset == (off_t) -1) {
2788 return 0;
2789 }
2790
2791 /* Check ELF signature */
2792 if (!elf_check_ident(&ehdr)) {
2793 return 0;
2794 }
2795
2796 /* check header */
2797 bswap_ehdr(&ehdr);
2798 if (!elf_check_ehdr(&ehdr)) {
2799 return 0;
2800 }
2801
2802 /* return architecture id */
2803 return ehdr.e_flags;
2804}
2805
f0116c54 2806int load_elf_binary(struct linux_binprm *bprm, struct image_info *info)
31e31b8a 2807{
8e62a717 2808 struct image_info interp_info;
31e31b8a 2809 struct elfhdr elf_ex;
8e62a717 2810 char *elf_interpreter = NULL;
59baae9a 2811 char *scratch;
31e31b8a 2812
abcac736
DS		 2813 memset(&interp_info, 0, sizeof(interp_info));
2814#ifdef TARGET_MIPS
2815 interp_info.fp_abi = MIPS_ABI_FP_UNKNOWN;
2816#endif
2817
bf858897 2818 info->start_mmap = (abi_ulong)ELF_START_MMAP;
bf858897
RH		 2819
2820 load_elf_image(bprm->filename, bprm->fd, info,
2821 &elf_interpreter, bprm->buf);
31e31b8a 2822
bf858897
RH		 2823 /* ??? We need a copy of the elf header for passing to create_elf_tables.
2824 If we do nothing, we'll have overwritten this when we re-use bprm->buf
2825 when we load the interpreter. */
2826 elf_ex = *(struct elfhdr *)bprm->buf;
31e31b8a 2827
59baae9a
SB		 2828 /* Do this so that we can load the interpreter, if need be. We will
2829 change some of these later */
2830 bprm->p = setup_arg_pages(bprm, info);
2831
2832 scratch = g_new0(char, TARGET_PAGE_SIZE);
7c4ee5bc
RH		 2833 if (STACK_GROWS_DOWN) {
2834 bprm->p = copy_elf_strings(1, &bprm->filename, scratch,
2835 bprm->p, info->stack_limit);
2836 info->file_string = bprm->p;
2837 bprm->p = copy_elf_strings(bprm->envc, bprm->envp, scratch,
2838 bprm->p, info->stack_limit);
2839 info->env_strings = bprm->p;
2840 bprm->p = copy_elf_strings(bprm->argc, bprm->argv, scratch,
2841 bprm->p, info->stack_limit);
2842 info->arg_strings = bprm->p;
2843 } else {
2844 info->arg_strings = bprm->p;
2845 bprm->p = copy_elf_strings(bprm->argc, bprm->argv, scratch,
2846 bprm->p, info->stack_limit);
2847 info->env_strings = bprm->p;
2848 bprm->p = copy_elf_strings(bprm->envc, bprm->envp, scratch,
2849 bprm->p, info->stack_limit);
2850 info->file_string = bprm->p;
2851 bprm->p = copy_elf_strings(1, &bprm->filename, scratch,
2852 bprm->p, info->stack_limit);
2853 }
2854
59baae9a
SB		 2855 g_free(scratch);
2856
e5fe0c52 2857 if (!bprm->p) {
bf858897
RH		 2858 fprintf(stderr, "%s: %s\n", bprm->filename, strerror(E2BIG));
2859 exit(-1);
379f6698 2860 }
379f6698 2861
8e62a717
RH		 2862 if (elf_interpreter) {
2863 load_elf_interp(elf_interpreter, &interp_info, bprm->buf);
31e31b8a 2864
8e62a717
RH		 2865 /* If the program interpreter is one of these two, then assume
2866 an iBCS2 image. Otherwise assume a native linux image. */
2867
2868 if (strcmp(elf_interpreter, "/usr/lib/libc.so.1") == 0
2869 || strcmp(elf_interpreter, "/usr/lib/ld.so.1") == 0) {
2870 info->personality = PER_SVR4;
31e31b8a 2871
8e62a717
RH		 2872 /* Why this, you ask??? Well SVr4 maps page 0 as read-only,
2873 and some applications "depend" upon this behavior. Since
2874 we do not have the power to recompile these, we emulate
2875 the SVr4 behavior. Sigh. */
2876 target_mmap(0, qemu_host_page_size, PROT_READ | PROT_EXEC,
68754b44 2877 MAP_FIXED | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
8e62a717 2878 }
c94cb6c9
SM		 2879#ifdef TARGET_MIPS
2880 info->interp_fp_abi = interp_info.fp_abi;
2881#endif
31e31b8a
FB		 2882 }
2883
8e62a717
RH		 2884 bprm->p = create_elf_tables(bprm->p, bprm->argc, bprm->envc, &elf_ex,
2885 info, (elf_interpreter ? &interp_info : NULL));
2886 info->start_stack = bprm->p;
2887
2888 /* If we have an interpreter, set that as the program's entry point.
8e78064e 2889 Copy the load_bias as well, to help PPC64 interpret the entry
8e62a717
RH		 2890 point as a function descriptor. Do this after creating elf tables
2891 so that we copy the original program entry point into the AUXV. */
2892 if (elf_interpreter) {
8e78064e 2893 info->load_bias = interp_info.load_bias;
8e62a717 2894 info->entry = interp_info.entry;
bf858897 2895 free(elf_interpreter);
8e62a717 2896 }
31e31b8a 2897
edf8e2af
MW		 2898#ifdef USE_ELF_CORE_DUMP
2899 bprm->core_dump = &elf_core_dump;
2900#endif
2901
6fd59449
RH		 2902 /*
2903 * If we reserved extra space for brk, release it now.
2904 * The implementation of do_brk in syscalls.c expects to be able
2905 * to mmap pages in this space.
2906 */
2907 if (info->reserve_brk) {
2908 abi_ulong start_brk = HOST_PAGE_ALIGN(info->brk);
2909 abi_ulong end_brk = HOST_PAGE_ALIGN(info->brk + info->reserve_brk);
2910 target_munmap(start_brk, end_brk - start_brk);
2911 }
2912
31e31b8a
FB		 2913 return 0;
2914}
2915
edf8e2af 2916#ifdef USE_ELF_CORE_DUMP
edf8e2af
MW		 2917/*
2918 * Definitions to generate Intel SVR4-like core files.
a2547a13 2919 * These mostly have the same names as the SVR4 types with "target_elf_"
edf8e2af
MW		 2920 * tacked on the front to prevent clashes with linux definitions,
2921 * and the typedef forms have been avoided. This is mostly like
2922 * the SVR4 structure, but more Linuxy, with things that Linux does
2923 * not support and which gdb doesn't really use excluded.
2924 *
2925 * Fields we don't dump (their contents is zero) in linux-user qemu
2926 * are marked with XXX.
2927 *
2928 * Core dump code is copied from linux kernel (fs/binfmt_elf.c).
2929 *
2930 * Porting ELF coredump for target is (quite) simple process. First you
dd0a3651 2931 * define USE_ELF_CORE_DUMP in target ELF code (where init_thread() for
edf8e2af
MW		 2932 * the target resides):
2933 *
2934 * #define USE_ELF_CORE_DUMP
2935 *
2936 * Next you define type of register set used for dumping. ELF specification
2937 * says that it needs to be array of elf_greg_t that has size of ELF_NREG.
2938 *
c227f099 2939 * typedef <target_regtype> target_elf_greg_t;
edf8e2af 2940 * #define ELF_NREG <number of registers>
c227f099 2941 * typedef taret_elf_greg_t target_elf_gregset_t[ELF_NREG];
edf8e2af 2942 *
edf8e2af
MW		 2943 * Last step is to implement target specific function that copies registers
2944 * from given cpu into just specified register set. Prototype is:
2945 *
c227f099 2946 * static void elf_core_copy_regs(taret_elf_gregset_t *regs,
9349b4f9 2947 * const CPUArchState *env);
edf8e2af
MW		 2948 *
2949 * Parameters:
2950 * regs - copy register values into here (allocated and zeroed by caller)
2951 * env - copy registers from here
2952 *
2953 * Example for ARM target is provided in this file.
2954 */
2955
2956/* An ELF note in memory */
2957struct memelfnote {
2958 const char *name;
2959 size_t namesz;
2960 size_t namesz_rounded;
2961 int type;
2962 size_t datasz;
80f5ce75 2963 size_t datasz_rounded;
edf8e2af
MW		 2964 void *data;
2965 size_t notesz;
2966};
2967
a2547a13 2968struct target_elf_siginfo {
f8fd4fc4
PB		 2969 abi_int si_signo; /* signal number */
2970 abi_int si_code; /* extra code */
2971 abi_int si_errno; /* errno */
edf8e2af
MW		 2972};
2973
a2547a13
LD		 2974struct target_elf_prstatus {
2975 struct target_elf_siginfo pr_info; /* Info associated with signal */
1ddd592f 2976 abi_short pr_cursig; /* Current signal */
ca98ac83
PB		 2977 abi_ulong pr_sigpend; /* XXX */
2978 abi_ulong pr_sighold; /* XXX */
c227f099
AL		 2979 target_pid_t pr_pid;
2980 target_pid_t pr_ppid;
2981 target_pid_t pr_pgrp;
2982 target_pid_t pr_sid;
edf8e2af
MW		 2983 struct target_timeval pr_utime; /* XXX User time */
2984 struct target_timeval pr_stime; /* XXX System time */
2985 struct target_timeval pr_cutime; /* XXX Cumulative user time */
2986 struct target_timeval pr_cstime; /* XXX Cumulative system time */
c227f099 2987 target_elf_gregset_t pr_reg; /* GP registers */
f8fd4fc4 2988 abi_int pr_fpvalid; /* XXX */
edf8e2af
MW		 2989};
2990
2991#define ELF_PRARGSZ (80) /* Number of chars for args */
2992
a2547a13 2993struct target_elf_prpsinfo {
edf8e2af
MW		 2994 char pr_state; /* numeric process state */
2995 char pr_sname; /* char for pr_state */
2996 char pr_zomb; /* zombie */
2997 char pr_nice; /* nice val */
ca98ac83 2998 abi_ulong pr_flag; /* flags */
c227f099
AL		 2999 target_uid_t pr_uid;
3000 target_gid_t pr_gid;
3001 target_pid_t pr_pid, pr_ppid, pr_pgrp, pr_sid;
edf8e2af 3002 /* Lots missing */
d7eb2b92 3003 char pr_fname[16] QEMU_NONSTRING; /* filename of executable */
edf8e2af
MW		 3004 char pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */
3005};
3006
3007/* Here is the structure in which status of each thread is captured. */
3008struct elf_thread_status {
72cf2d4f 3009 QTAILQ_ENTRY(elf_thread_status) ets_link;
a2547a13 3010 struct target_elf_prstatus prstatus; /* NT_PRSTATUS */
edf8e2af
MW		 3011#if 0
3012 elf_fpregset_t fpu; /* NT_PRFPREG */
3013 struct task_struct *thread;
3014 elf_fpxregset_t xfpu; /* ELF_CORE_XFPREG_TYPE */
3015#endif
3016 struct memelfnote notes[1];
3017 int num_notes;
3018};
3019
3020struct elf_note_info {
3021 struct memelfnote *notes;
a2547a13
LD		 3022 struct target_elf_prstatus *prstatus; /* NT_PRSTATUS */
3023 struct target_elf_prpsinfo *psinfo; /* NT_PRPSINFO */
edf8e2af 3024
b58deb34 3025 QTAILQ_HEAD(, elf_thread_status) thread_list;
edf8e2af
MW		 3026#if 0
3027 /*
3028 * Current version of ELF coredump doesn't support
3029 * dumping fp regs etc.
3030 */
3031 elf_fpregset_t *fpu;
3032 elf_fpxregset_t *xfpu;
3033 int thread_status_size;
3034#endif
3035 int notes_size;
3036 int numnote;
3037};
3038
3039struct vm_area_struct {
1a1c4db9
MI		 3040 target_ulong vma_start; /* start vaddr of memory region */
3041 target_ulong vma_end; /* end vaddr of memory region */
3042 abi_ulong vma_flags; /* protection etc. flags for the region */
72cf2d4f 3043 QTAILQ_ENTRY(vm_area_struct) vma_link;
edf8e2af
MW		 3044};
3045
3046struct mm_struct {
72cf2d4f 3047 QTAILQ_HEAD(, vm_area_struct) mm_mmap;
edf8e2af
MW		 3048 int mm_count; /* number of mappings */
3049};
3050
3051static struct mm_struct *vma_init(void);
3052static void vma_delete(struct mm_struct *);
1a1c4db9
MI		 3053static int vma_add_mapping(struct mm_struct *, target_ulong,
3054 target_ulong, abi_ulong);
edf8e2af
MW		 3055static int vma_get_mapping_count(const struct mm_struct *);
3056static struct vm_area_struct *vma_first(const struct mm_struct *);
3057static struct vm_area_struct *vma_next(struct vm_area_struct *);
3058static abi_ulong vma_dump_size(const struct vm_area_struct *);
1a1c4db9 3059static int vma_walker(void *priv, target_ulong start, target_ulong end,
d97ef72e 3060 unsigned long flags);
edf8e2af
MW		 3061
3062static void fill_elf_header(struct elfhdr *, int, uint16_t, uint32_t);
3063static void fill_note(struct memelfnote *, const char *, int,
d97ef72e 3064 unsigned int, void *);
a2547a13
LD		 3065static void fill_prstatus(struct target_elf_prstatus *, const TaskState *, int);
3066static int fill_psinfo(struct target_elf_prpsinfo *, const TaskState *);
edf8e2af
MW		 3067static void fill_auxv_note(struct memelfnote *, const TaskState *);
3068static void fill_elf_note_phdr(struct elf_phdr *, int, off_t);
3069static size_t note_size(const struct memelfnote *);
3070static void free_note_info(struct elf_note_info *);
9349b4f9
AF		 3071static int fill_note_info(struct elf_note_info *, long, const CPUArchState *);
3072static void fill_thread_info(struct elf_note_info *, const CPUArchState *);
edf8e2af
MW		 3073static int core_dump_filename(const TaskState *, char *, size_t);
3074
3075static int dump_write(int, const void *, size_t);
3076static int write_note(struct memelfnote *, int);
3077static int write_note_info(struct elf_note_info *, int);
3078
3079#ifdef BSWAP_NEEDED
a2547a13 3080static void bswap_prstatus(struct target_elf_prstatus *prstatus)
edf8e2af 3081{
ca98ac83
PB		 3082 prstatus->pr_info.si_signo = tswap32(prstatus->pr_info.si_signo);
3083 prstatus->pr_info.si_code = tswap32(prstatus->pr_info.si_code);
3084 prstatus->pr_info.si_errno = tswap32(prstatus->pr_info.si_errno);
edf8e2af 3085 prstatus->pr_cursig = tswap16(prstatus->pr_cursig);
ca98ac83
PB		 3086 prstatus->pr_sigpend = tswapal(prstatus->pr_sigpend);
3087 prstatus->pr_sighold = tswapal(prstatus->pr_sighold);
edf8e2af
MW		 3088 prstatus->pr_pid = tswap32(prstatus->pr_pid);
3089 prstatus->pr_ppid = tswap32(prstatus->pr_ppid);
3090 prstatus->pr_pgrp = tswap32(prstatus->pr_pgrp);
3091 prstatus->pr_sid = tswap32(prstatus->pr_sid);
3092 /* cpu times are not filled, so we skip them */
3093 /* regs should be in correct format already */
3094 prstatus->pr_fpvalid = tswap32(prstatus->pr_fpvalid);
3095}
3096
a2547a13 3097static void bswap_psinfo(struct target_elf_prpsinfo *psinfo)
edf8e2af 3098{
ca98ac83 3099 psinfo->pr_flag = tswapal(psinfo->pr_flag);
edf8e2af
MW		 3100 psinfo->pr_uid = tswap16(psinfo->pr_uid);
3101 psinfo->pr_gid = tswap16(psinfo->pr_gid);
3102 psinfo->pr_pid = tswap32(psinfo->pr_pid);
3103 psinfo->pr_ppid = tswap32(psinfo->pr_ppid);
3104 psinfo->pr_pgrp = tswap32(psinfo->pr_pgrp);
3105 psinfo->pr_sid = tswap32(psinfo->pr_sid);
3106}
991f8f0c
RH		 3107
3108static void bswap_note(struct elf_note *en)
3109{
3110 bswap32s(&en->n_namesz);
3111 bswap32s(&en->n_descsz);
3112 bswap32s(&en->n_type);
3113}
3114#else
3115static inline void bswap_prstatus(struct target_elf_prstatus *p) { }
3116static inline void bswap_psinfo(struct target_elf_prpsinfo *p) {}
3117static inline void bswap_note(struct elf_note *en) { }
edf8e2af
MW		 3118#endif /* BSWAP_NEEDED */
3119
3120/*
3121 * Minimal support for linux memory regions. These are needed
3122 * when we are finding out what memory exactly belongs to
3123 * emulated process. No locks needed here, as long as
3124 * thread that received the signal is stopped.
3125 */
3126
3127static struct mm_struct *vma_init(void)
3128{
3129 struct mm_struct *mm;
3130
7267c094 3131 if ((mm = g_malloc(sizeof (*mm))) == NULL)
edf8e2af
MW		 3132 return (NULL);
3133
3134 mm->mm_count = 0;
72cf2d4f 3135 QTAILQ_INIT(&mm->mm_mmap);
edf8e2af
MW		 3136
3137 return (mm);
3138}
3139
3140static void vma_delete(struct mm_struct *mm)
3141{
3142 struct vm_area_struct *vma;
3143
3144 while ((vma = vma_first(mm)) != NULL) {
72cf2d4f 3145 QTAILQ_REMOVE(&mm->mm_mmap, vma, vma_link);
7267c094 3146 g_free(vma);
edf8e2af 3147 }
7267c094 3148 g_free(mm);
edf8e2af
MW		 3149}
3150
1a1c4db9
MI		 3151static int vma_add_mapping(struct mm_struct *mm, target_ulong start,
3152 target_ulong end, abi_ulong flags)
edf8e2af
MW		 3153{
3154 struct vm_area_struct *vma;
3155
7267c094 3156 if ((vma = g_malloc0(sizeof (*vma))) == NULL)
edf8e2af
MW		 3157 return (-1);
3158
3159 vma->vma_start = start;
3160 vma->vma_end = end;
3161 vma->vma_flags = flags;
3162
72cf2d4f 3163 QTAILQ_INSERT_TAIL(&mm->mm_mmap, vma, vma_link);
edf8e2af
MW		 3164 mm->mm_count++;
3165
3166 return (0);
3167}
3168
3169static struct vm_area_struct *vma_first(const struct mm_struct *mm)
3170{
72cf2d4f 3171 return (QTAILQ_FIRST(&mm->mm_mmap));
edf8e2af
MW		 3172}
3173
3174static struct vm_area_struct *vma_next(struct vm_area_struct *vma)
3175{
72cf2d4f 3176 return (QTAILQ_NEXT(vma, vma_link));
edf8e2af
MW		 3177}
3178
3179static int vma_get_mapping_count(const struct mm_struct *mm)
3180{
3181 return (mm->mm_count);
3182}
3183
3184/*
3185 * Calculate file (dump) size of given memory region.
3186 */
3187static abi_ulong vma_dump_size(const struct vm_area_struct *vma)
3188{
3189 /* if we cannot even read the first page, skip it */
3190 if (!access_ok(VERIFY_READ, vma->vma_start, TARGET_PAGE_SIZE))
3191 return (0);
3192
3193 /*
3194 * Usually we don't dump executable pages as they contain
3195 * non-writable code that debugger can read directly from
3196 * target library etc. However, thread stacks are marked
3197 * also executable so we read in first page of given region
3198 * and check whether it contains elf header. If there is
3199 * no elf header, we dump it.
3200 */
3201 if (vma->vma_flags & PROT_EXEC) {
3202 char page[TARGET_PAGE_SIZE];
3203
3204 copy_from_user(page, vma->vma_start, sizeof (page));
3205 if ((page[EI_MAG0] == ELFMAG0) &&
3206 (page[EI_MAG1] == ELFMAG1) &&
3207 (page[EI_MAG2] == ELFMAG2) &&
3208 (page[EI_MAG3] == ELFMAG3)) {
3209 /*
3210 * Mappings are possibly from ELF binary. Don't dump
3211 * them.
3212 */
3213 return (0);
3214 }
3215 }
3216
3217 return (vma->vma_end - vma->vma_start);
3218}
3219
1a1c4db9 3220static int vma_walker(void *priv, target_ulong start, target_ulong end,
d97ef72e 3221 unsigned long flags)
edf8e2af
MW		 3222{
3223 struct mm_struct *mm = (struct mm_struct *)priv;
3224
edf8e2af
MW		 3225 vma_add_mapping(mm, start, end, flags);
3226 return (0);
3227}
3228
3229static void fill_note(struct memelfnote *note, const char *name, int type,
d97ef72e 3230 unsigned int sz, void *data)
edf8e2af
MW		 3231{
3232 unsigned int namesz;
3233
3234 namesz = strlen(name) + 1;
3235 note->name = name;
3236 note->namesz = namesz;
3237 note->namesz_rounded = roundup(namesz, sizeof (int32_t));
3238 note->type = type;
80f5ce75
LV		 3239 note->datasz = sz;
3240 note->datasz_rounded = roundup(sz, sizeof (int32_t));
3241
edf8e2af
MW		 3242 note->data = data;
3243
3244 /*
3245 * We calculate rounded up note size here as specified by
3246 * ELF document.
3247 */
3248 note->notesz = sizeof (struct elf_note) +
80f5ce75 3249 note->namesz_rounded + note->datasz_rounded;
edf8e2af
MW		 3250}
3251
3252static void fill_elf_header(struct elfhdr *elf, int segs, uint16_t machine,
d97ef72e 3253 uint32_t flags)
edf8e2af
MW		 3254{
3255 (void) memset(elf, 0, sizeof(*elf));
3256
3257 (void) memcpy(elf->e_ident, ELFMAG, SELFMAG);
3258 elf->e_ident[EI_CLASS] = ELF_CLASS;
3259 elf->e_ident[EI_DATA] = ELF_DATA;
3260 elf->e_ident[EI_VERSION] = EV_CURRENT;
3261 elf->e_ident[EI_OSABI] = ELF_OSABI;
3262
3263 elf->e_type = ET_CORE;
3264 elf->e_machine = machine;
3265 elf->e_version = EV_CURRENT;
3266 elf->e_phoff = sizeof(struct elfhdr);
3267 elf->e_flags = flags;
3268 elf->e_ehsize = sizeof(struct elfhdr);
3269 elf->e_phentsize = sizeof(struct elf_phdr);
3270 elf->e_phnum = segs;
3271
edf8e2af 3272 bswap_ehdr(elf);
edf8e2af
MW		 3273}
3274
3275static void fill_elf_note_phdr(struct elf_phdr *phdr, int sz, off_t offset)
3276{
3277 phdr->p_type = PT_NOTE;
3278 phdr->p_offset = offset;
3279 phdr->p_vaddr = 0;
3280 phdr->p_paddr = 0;
3281 phdr->p_filesz = sz;
3282 phdr->p_memsz = 0;
3283 phdr->p_flags = 0;
3284 phdr->p_align = 0;
3285
991f8f0c 3286 bswap_phdr(phdr, 1);
edf8e2af
MW		 3287}
3288
3289static size_t note_size(const struct memelfnote *note)
3290{
3291 return (note->notesz);
3292}
3293
a2547a13 3294static void fill_prstatus(struct target_elf_prstatus *prstatus,
d97ef72e 3295 const TaskState *ts, int signr)
edf8e2af
MW		 3296{
3297 (void) memset(prstatus, 0, sizeof (*prstatus));
3298 prstatus->pr_info.si_signo = prstatus->pr_cursig = signr;
3299 prstatus->pr_pid = ts->ts_tid;
3300 prstatus->pr_ppid = getppid();
3301 prstatus->pr_pgrp = getpgrp();
3302 prstatus->pr_sid = getsid(0);
3303
edf8e2af 3304 bswap_prstatus(prstatus);
edf8e2af
MW		 3305}
3306
a2547a13 3307static int fill_psinfo(struct target_elf_prpsinfo *psinfo, const TaskState *ts)
edf8e2af 3308{
900cfbca 3309 char *base_filename;
edf8e2af
MW		 3310 unsigned int i, len;
3311
3312 (void) memset(psinfo, 0, sizeof (*psinfo));
3313
3314 len = ts->info->arg_end - ts->info->arg_start;
3315 if (len >= ELF_PRARGSZ)
3316 len = ELF_PRARGSZ - 1;
3317 if (copy_from_user(&psinfo->pr_psargs, ts->info->arg_start, len))
3318 return -EFAULT;
3319 for (i = 0; i < len; i++)
3320 if (psinfo->pr_psargs[i] == 0)
3321 psinfo->pr_psargs[i] = ' ';
3322 psinfo->pr_psargs[len] = 0;
3323
3324 psinfo->pr_pid = getpid();
3325 psinfo->pr_ppid = getppid();
3326 psinfo->pr_pgrp = getpgrp();
3327 psinfo->pr_sid = getsid(0);
3328 psinfo->pr_uid = getuid();
3329 psinfo->pr_gid = getgid();
3330
900cfbca
JM		 3331 base_filename = g_path_get_basename(ts->bprm->filename);
3332 /*
3333 * Using strncpy here is fine: at max-length,
3334 * this field is not NUL-terminated.
3335 */
edf8e2af 3336 (void) strncpy(psinfo->pr_fname, base_filename,
d97ef72e 3337 sizeof(psinfo->pr_fname));
edf8e2af 3338
900cfbca 3339 g_free(base_filename);
edf8e2af 3340 bswap_psinfo(psinfo);
edf8e2af
MW		 3341 return (0);
3342}
3343
3344static void fill_auxv_note(struct memelfnote *note, const TaskState *ts)
3345{
3346 elf_addr_t auxv = (elf_addr_t)ts->info->saved_auxv;
3347 elf_addr_t orig_auxv = auxv;
edf8e2af 3348 void *ptr;
125b0f55 3349 int len = ts->info->auxv_len;
edf8e2af
MW		 3350
3351 /*
3352 * Auxiliary vector is stored in target process stack. It contains
3353 * {type, value} pairs that we need to dump into note. This is not
3354 * strictly necessary but we do it here for sake of completeness.
3355 */
3356
edf8e2af
MW		 3357 /* read in whole auxv vector and copy it to memelfnote */
3358 ptr = lock_user(VERIFY_READ, orig_auxv, len, 0);
3359 if (ptr != NULL) {
3360 fill_note(note, "CORE", NT_AUXV, len, ptr);
3361 unlock_user(ptr, auxv, len);
3362 }
3363}
3364
3365/*
3366 * Constructs name of coredump file. We have following convention
3367 * for the name:
3368 * qemu_<basename-of-target-binary>_<date>-<time>_<pid>.core
3369 *
3370 * Returns 0 in case of success, -1 otherwise (errno is set).
3371 */
3372static int core_dump_filename(const TaskState *ts, char *buf,
d97ef72e 3373 size_t bufsize)
edf8e2af
MW		 3374{
3375 char timestamp[64];
edf8e2af
MW		 3376 char *base_filename = NULL;
3377 struct timeval tv;
3378 struct tm tm;
3379
3380 assert(bufsize >= PATH_MAX);
3381
3382 if (gettimeofday(&tv, NULL) < 0) {
3383 (void) fprintf(stderr, "unable to get current timestamp: %s",
d97ef72e 3384 strerror(errno));
edf8e2af
MW		 3385 return (-1);
3386 }
3387
b8da57fa 3388 base_filename = g_path_get_basename(ts->bprm->filename);
edf8e2af 3389 (void) strftime(timestamp, sizeof (timestamp), "%Y%m%d-%H%M%S",
d97ef72e 3390 localtime_r(&tv.tv_sec, &tm));
edf8e2af 3391 (void) snprintf(buf, bufsize, "qemu_%s_%s_%d.core",
d97ef72e 3392 base_filename, timestamp, (int)getpid());
b8da57fa 3393 g_free(base_filename);
edf8e2af
MW		 3394
3395 return (0);
3396}
3397
3398static int dump_write(int fd, const void *ptr, size_t size)
3399{
3400 const char *bufp = (const char *)ptr;
3401 ssize_t bytes_written, bytes_left;
3402 struct rlimit dumpsize;
3403 off_t pos;
3404
3405 bytes_written = 0;
3406 getrlimit(RLIMIT_CORE, &dumpsize);
3407 if ((pos = lseek(fd, 0, SEEK_CUR))==-1) {
3408 if (errno == ESPIPE) { /* not a seekable stream */
3409 bytes_left = size;
3410 } else {
3411 return pos;
3412 }
3413 } else {
3414 if (dumpsize.rlim_cur <= pos) {
3415 return -1;
3416 } else if (dumpsize.rlim_cur == RLIM_INFINITY) {
3417 bytes_left = size;
3418 } else {
3419 size_t limit_left=dumpsize.rlim_cur - pos;
3420 bytes_left = limit_left >= size ? size : limit_left ;
3421 }
3422 }
3423
3424 /*
3425 * In normal conditions, single write(2) should do but
3426 * in case of socket etc. this mechanism is more portable.
3427 */
3428 do {
3429 bytes_written = write(fd, bufp, bytes_left);
3430 if (bytes_written < 0) {
3431 if (errno == EINTR)
3432 continue;
3433 return (-1);
3434 } else if (bytes_written == 0) { /* eof */
3435 return (-1);
3436 }
3437 bufp += bytes_written;
3438 bytes_left -= bytes_written;
3439 } while (bytes_left > 0);
3440
3441 return (0);
3442}
3443
3444static int write_note(struct memelfnote *men, int fd)
3445{
3446 struct elf_note en;
3447
3448 en.n_namesz = men->namesz;
3449 en.n_type = men->type;
3450 en.n_descsz = men->datasz;
3451
edf8e2af 3452 bswap_note(&en);
edf8e2af
MW		 3453
3454 if (dump_write(fd, &en, sizeof(en)) != 0)
3455 return (-1);
3456 if (dump_write(fd, men->name, men->namesz_rounded) != 0)
3457 return (-1);
80f5ce75 3458 if (dump_write(fd, men->data, men->datasz_rounded) != 0)
edf8e2af
MW		 3459 return (-1);
3460
3461 return (0);
3462}
3463
9349b4f9 3464static void fill_thread_info(struct elf_note_info *info, const CPUArchState *env)
edf8e2af 3465{
29a0af61 3466 CPUState *cpu = env_cpu((CPUArchState *)env);
0429a971 3467 TaskState *ts = (TaskState *)cpu->opaque;
edf8e2af
MW		 3468 struct elf_thread_status *ets;
3469
7267c094 3470 ets = g_malloc0(sizeof (*ets));
edf8e2af
MW		 3471 ets->num_notes = 1; /* only prstatus is dumped */
3472 fill_prstatus(&ets->prstatus, ts, 0);
3473 elf_core_copy_regs(&ets->prstatus.pr_reg, env);
3474 fill_note(&ets->notes[0], "CORE", NT_PRSTATUS, sizeof (ets->prstatus),
d97ef72e 3475 &ets->prstatus);
edf8e2af 3476
72cf2d4f 3477 QTAILQ_INSERT_TAIL(&info->thread_list, ets, ets_link);
edf8e2af
MW		 3478
3479 info->notes_size += note_size(&ets->notes[0]);
3480}
3481
6afafa86
PM		 3482static void init_note_info(struct elf_note_info *info)
3483{
3484 /* Initialize the elf_note_info structure so that it is at
3485 * least safe to call free_note_info() on it. Must be
3486 * called before calling fill_note_info().
3487 */
3488 memset(info, 0, sizeof (*info));
3489 QTAILQ_INIT(&info->thread_list);
3490}
3491
edf8e2af 3492static int fill_note_info(struct elf_note_info *info,
9349b4f9 3493 long signr, const CPUArchState *env)
edf8e2af
MW		 3494{
3495#define NUMNOTES 3
29a0af61 3496 CPUState *cpu = env_cpu((CPUArchState *)env);
0429a971 3497 TaskState *ts = (TaskState *)cpu->opaque;
edf8e2af
MW		 3498 int i;
3499
c78d65e8 3500 info->notes = g_new0(struct memelfnote, NUMNOTES);
edf8e2af
MW		 3501 if (info->notes == NULL)
3502 return (-ENOMEM);
7267c094 3503 info->prstatus = g_malloc0(sizeof (*info->prstatus));
edf8e2af
MW		 3504 if (info->prstatus == NULL)
3505 return (-ENOMEM);
7267c094 3506 info->psinfo = g_malloc0(sizeof (*info->psinfo));
edf8e2af
MW		 3507 if (info->prstatus == NULL)
3508 return (-ENOMEM);
3509
3510 /*
3511 * First fill in status (and registers) of current thread
3512 * including process info & aux vector.
3513 */
3514 fill_prstatus(info->prstatus, ts, signr);
3515 elf_core_copy_regs(&info->prstatus->pr_reg, env);
3516 fill_note(&info->notes[0], "CORE", NT_PRSTATUS,
d97ef72e 3517 sizeof (*info->prstatus), info->prstatus);
edf8e2af
MW		 3518 fill_psinfo(info->psinfo, ts);
3519 fill_note(&info->notes[1], "CORE", NT_PRPSINFO,
d97ef72e 3520 sizeof (*info->psinfo), info->psinfo);
edf8e2af
MW		 3521 fill_auxv_note(&info->notes[2], ts);
3522 info->numnote = 3;
3523
3524 info->notes_size = 0;
3525 for (i = 0; i < info->numnote; i++)
3526 info->notes_size += note_size(&info->notes[i]);
3527
3528 /* read and fill status of all threads */
3529 cpu_list_lock();
bdc44640 3530 CPU_FOREACH(cpu) {
a2247f8e 3531 if (cpu == thread_cpu) {
edf8e2af 3532 continue;
182735ef
AF		 3533 }
3534 fill_thread_info(info, (CPUArchState *)cpu->env_ptr);
edf8e2af
MW		 3535 }
3536 cpu_list_unlock();
3537
3538 return (0);
3539}
3540
3541static void free_note_info(struct elf_note_info *info)
3542{
3543 struct elf_thread_status *ets;
3544
72cf2d4f
BS		 3545 while (!QTAILQ_EMPTY(&info->thread_list)) {
3546 ets = QTAILQ_FIRST(&info->thread_list);
3547 QTAILQ_REMOVE(&info->thread_list, ets, ets_link);
7267c094 3548 g_free(ets);
edf8e2af
MW		 3549 }
3550
7267c094
AL		 3551 g_free(info->prstatus);
3552 g_free(info->psinfo);
3553 g_free(info->notes);
edf8e2af
MW		 3554}
3555
3556static int write_note_info(struct elf_note_info *info, int fd)
3557{
3558 struct elf_thread_status *ets;
3559 int i, error = 0;
3560
3561 /* write prstatus, psinfo and auxv for current thread */
3562 for (i = 0; i < info->numnote; i++)
3563 if ((error = write_note(&info->notes[i], fd)) != 0)
3564 return (error);
3565
3566 /* write prstatus for each thread */
52a53afe 3567 QTAILQ_FOREACH(ets, &info->thread_list, ets_link) {
edf8e2af
MW		 3568 if ((error = write_note(&ets->notes[0], fd)) != 0)
3569 return (error);
3570 }
3571
3572 return (0);
3573}
3574
3575/*
3576 * Write out ELF coredump.
3577 *
3578 * See documentation of ELF object file format in:
3579 * http://www.caldera.com/developers/devspecs/gabi41.pdf
3580 *
3581 * Coredump format in linux is following:
3582 *
3583 * 0 +----------------------+ \
3584 * | ELF header | ET_CORE |
3585 * +----------------------+ |
3586 * | ELF program headers | |--- headers
3587 * | - NOTE section | |
3588 * | - PT_LOAD sections | |
3589 * +----------------------+ /
3590 * | NOTEs: |
3591 * | - NT_PRSTATUS |
3592 * | - NT_PRSINFO |
3593 * | - NT_AUXV |
3594 * +----------------------+ <-- aligned to target page
3595 * | Process memory dump |
3596 * : :
3597 * . .
3598 * : :
3599 * | |
3600 * +----------------------+
3601 *
3602 * NT_PRSTATUS -> struct elf_prstatus (per thread)
3603 * NT_PRSINFO -> struct elf_prpsinfo
3604 * NT_AUXV is array of { type, value } pairs (see fill_auxv_note()).
3605 *
3606 * Format follows System V format as close as possible. Current
3607 * version limitations are as follows:
3608 * - no floating point registers are dumped
3609 *
3610 * Function returns 0 in case of success, negative errno otherwise.
3611 *
3612 * TODO: make this work also during runtime: it should be
3613 * possible to force coredump from running process and then
3614 * continue processing. For example qemu could set up SIGUSR2
3615 * handler (provided that target process haven't registered
3616 * handler for that) that does the dump when signal is received.
3617 */
9349b4f9 3618static int elf_core_dump(int signr, const CPUArchState *env)
edf8e2af 3619{
29a0af61 3620 const CPUState *cpu = env_cpu((CPUArchState *)env);
0429a971 3621 const TaskState *ts = (const TaskState *)cpu->opaque;
edf8e2af
MW		 3622 struct vm_area_struct *vma = NULL;
3623 char corefile[PATH_MAX];
3624 struct elf_note_info info;
3625 struct elfhdr elf;
3626 struct elf_phdr phdr;
3627 struct rlimit dumpsize;
3628 struct mm_struct *mm = NULL;
3629 off_t offset = 0, data_offset = 0;
3630 int segs = 0;
3631 int fd = -1;
3632
6afafa86
PM		 3633 init_note_info(&info);
3634
edf8e2af
MW		 3635 errno = 0;
3636 getrlimit(RLIMIT_CORE, &dumpsize);
3637 if (dumpsize.rlim_cur == 0)
d97ef72e 3638 return 0;
edf8e2af
MW		 3639
3640 if (core_dump_filename(ts, corefile, sizeof (corefile)) < 0)
3641 return (-errno);
3642
3643 if ((fd = open(corefile, O_WRONLY | O_CREAT,
d97ef72e 3644 S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH)) < 0)
edf8e2af
MW		 3645 return (-errno);
3646
3647 /*
3648 * Walk through target process memory mappings and
3649 * set up structure containing this information. After
3650 * this point vma_xxx functions can be used.
3651 */
3652 if ((mm = vma_init()) == NULL)
3653 goto out;
3654
3655 walk_memory_regions(mm, vma_walker);
3656 segs = vma_get_mapping_count(mm);
3657
3658 /*
3659 * Construct valid coredump ELF header. We also
3660 * add one more segment for notes.
3661 */
3662 fill_elf_header(&elf, segs + 1, ELF_MACHINE, 0);
3663 if (dump_write(fd, &elf, sizeof (elf)) != 0)
3664 goto out;
3665
b6af0975 3666 /* fill in the in-memory version of notes */
edf8e2af
MW		 3667 if (fill_note_info(&info, signr, env) < 0)
3668 goto out;
3669
3670 offset += sizeof (elf); /* elf header */
3671 offset += (segs + 1) * sizeof (struct elf_phdr); /* program headers */
3672
3673 /* write out notes program header */
3674 fill_elf_note_phdr(&phdr, info.notes_size, offset);
3675
3676 offset += info.notes_size;
3677 if (dump_write(fd, &phdr, sizeof (phdr)) != 0)
3678 goto out;
3679
3680 /*
3681 * ELF specification wants data to start at page boundary so
3682 * we align it here.
3683 */
80f5ce75 3684 data_offset = offset = roundup(offset, ELF_EXEC_PAGESIZE);
edf8e2af
MW		 3685
3686 /*
3687 * Write program headers for memory regions mapped in
3688 * the target process.
3689 */
3690 for (vma = vma_first(mm); vma != NULL; vma = vma_next(vma)) {
3691 (void) memset(&phdr, 0, sizeof (phdr));
3692
3693 phdr.p_type = PT_LOAD;
3694 phdr.p_offset = offset;
3695 phdr.p_vaddr = vma->vma_start;
3696 phdr.p_paddr = 0;
3697 phdr.p_filesz = vma_dump_size(vma);
3698 offset += phdr.p_filesz;
3699 phdr.p_memsz = vma->vma_end - vma->vma_start;
3700 phdr.p_flags = vma->vma_flags & PROT_READ ? PF_R : 0;
3701 if (vma->vma_flags & PROT_WRITE)
3702 phdr.p_flags |= PF_W;
3703 if (vma->vma_flags & PROT_EXEC)
3704 phdr.p_flags |= PF_X;
3705 phdr.p_align = ELF_EXEC_PAGESIZE;
3706
80f5ce75 3707 bswap_phdr(&phdr, 1);
772034b6
PM		 3708 if (dump_write(fd, &phdr, sizeof(phdr)) != 0) {
3709 goto out;
3710 }
edf8e2af
MW		 3711 }
3712
3713 /*
3714 * Next we write notes just after program headers. No
3715 * alignment needed here.
3716 */
3717 if (write_note_info(&info, fd) < 0)
3718 goto out;
3719
3720 /* align data to page boundary */
edf8e2af
MW		 3721 if (lseek(fd, data_offset, SEEK_SET) != data_offset)
3722 goto out;
3723
3724 /*
3725 * Finally we can dump process memory into corefile as well.
3726 */
3727 for (vma = vma_first(mm); vma != NULL; vma = vma_next(vma)) {
3728 abi_ulong addr;
3729 abi_ulong end;
3730
3731 end = vma->vma_start + vma_dump_size(vma);
3732
3733 for (addr = vma->vma_start; addr < end;
d97ef72e 3734 addr += TARGET_PAGE_SIZE) {
edf8e2af
MW		 3735 char page[TARGET_PAGE_SIZE];
3736 int error;
3737
3738 /*
3739 * Read in page from target process memory and
3740 * write it to coredump file.
3741 */
3742 error = copy_from_user(page, addr, sizeof (page));
3743 if (error != 0) {
49995e17 3744 (void) fprintf(stderr, "unable to dump " TARGET_ABI_FMT_lx "\n",
d97ef72e 3745 addr);
edf8e2af
MW		 3746 errno = -error;
3747 goto out;
3748 }
3749 if (dump_write(fd, page, TARGET_PAGE_SIZE) < 0)
3750 goto out;
3751 }
3752 }
3753
d97ef72e 3754 out:
edf8e2af
MW		 3755 free_note_info(&info);
3756 if (mm != NULL)
3757 vma_delete(mm);
3758 (void) close(fd);
3759
3760 if (errno != 0)
3761 return (-errno);
3762 return (0);
3763}
edf8e2af
MW		 3764#endif /* USE_ELF_CORE_DUMP */
3765
e5fe0c52
PB		 3766void do_init_thread(struct target_pt_regs *regs, struct image_info *infop)
3767{
3768 init_thread(regs, infop);
3769}
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