1/*
2 * Copyright (c) 2010, 2011-2012, 2015 ARM Limited
3 * All rights reserved
4 *
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software
9 * licensed hereunder.  You may use the software subject to the license
10 * terms below provided that you ensure that this notice is replicated
11 * unmodified and in its entirety in all distributions of the software,
12 * modified or unmodified, in source code or in binary form.
13 *
14 * Copyright (c) 2003-2005 The Regents of The University of Michigan
15 * Copyright (c) 2007-2008 The Florida State University
16 * All rights reserved.
17 *
18 * Redistribution and use in source and binary forms, with or without
19 * modification, are permitted provided that the following conditions are
20 * met: redistributions of source code must retain the above copyright
21 * notice, this list of conditions and the following disclaimer;
22 * redistributions in binary form must reproduce the above copyright
23 * notice, this list of conditions and the following disclaimer in the
24 * documentation and/or other materials provided with the distribution;
25 * neither the name of the copyright holders nor the names of its
26 * contributors may be used to endorse or promote products derived from
27 * this software without specific prior written permission.
28 *
29 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
30 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
31 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
32 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
33 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
34 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
35 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
36 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
37 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
38 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
39 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
40 *
41 * Authors: Ali Saidi
42 *          Stephen Hines
43 */
44
45#ifndef __ARCH_ARM_LINUX_LINUX_HH__
46#define __ARCH_ARM_LINUX_LINUX_HH__
47
48#include "arch/arm/utility.hh"
49#include "kern/linux/linux.hh"
50
51class ArmLinux : public Linux
52{
53  public:
54    static void
55    archClone(uint64_t flags,
56              Process *pp, Process *cp,
57              ThreadContext *ptc, ThreadContext *ctc,
58              uint64_t stack, uint64_t tls)
59    {
60        ArmISA::copyRegs(ptc, ctc);
61
62        if (flags & TGT_CLONE_SETTLS) {
63            /* TPIDR_EL0 is architecturally mapped to TPIDRURW, so
64             * this works for both aarch32 and aarch64. */
65            ctc->setMiscReg(ArmISA::MISCREG_TPIDR_EL0, tls);
66        }
67    }
68};
69
70class ArmLinux32 : public ArmLinux
71{
72  public:
73
74    static const int TGT_SIGHUP         = 0x000001;
75    static const int TGT_SIGINT         = 0x000002;
76    static const int TGT_SIGQUIT        = 0x000003;
77    static const int TGT_SIGILL         = 0x000004;
78    static const int TGT_SIGTRAP        = 0x000005;
79    static const int TGT_SIGABRT        = 0x000006;
80    static const int TGT_SIGIOT         = 0x000006;
81    static const int TGT_SIGBUS         = 0x000007;
82    static const int TGT_SIGFPE         = 0x000008;
83    static const int TGT_SIGKILL        = 0x000009;
84    static const int TGT_SIGUSR1        = 0x00000a;
85    static const int TGT_SIGSEGV        = 0x00000b;
86    static const int TGT_SIGUSR2        = 0x00000c;
87    static const int TGT_SIGPIPE        = 0x00000d;
88    static const int TGT_SIGALRM        = 0x00000e;
89    static const int TGT_SIGTERM        = 0x00000f;
90    static const int TGT_SIGSTKFLT      = 0x000010;
91    static const int TGT_SIGCHLD        = 0x000011;
92    static const int TGT_SIGCONT        = 0x000012;
93    static const int TGT_SIGSTOP        = 0x000013;
94    static const int TGT_SIGTSTP        = 0x000014;
95    static const int TGT_SIGTTIN        = 0x000015;
96    static const int TGT_SIGTTOU        = 0x000016;
97    static const int TGT_SIGURG         = 0x000017;
98    static const int TGT_SIGXCPU        = 0x000018;
99    static const int TGT_SIGXFSZ        = 0x000019;
100    static const int TGT_SIGVTALRM      = 0x00001a;
101    static const int TGT_SIGPROF        = 0x00001b;
102    static const int TGT_SIGWINCH       = 0x00001c;
103    static const int TGT_SIGIO          = 0x00001d;
104    static const int TGT_SIGPOLL        = 0x00001d;
105    static const int TGT_SIGPWR         = 0x00001e;
106    static const int TGT_SIGSYS         = 0x00001f;
107    static const int TGT_SIGUNUSED      = 0x00001f;
108
109    /// This table maps the target open() flags to the corresponding
110    /// host open() flags.
111    static SyscallFlagTransTable openFlagTable[];
112
113    /// Number of entries in openFlagTable[].
114    static const int NUM_OPEN_FLAGS;
115
116    //@{
117    /// Basic ARM Linux types
118    typedef uint32_t size_t;
119    typedef uint32_t off_t;
120    typedef int32_t time_t;
121    typedef int32_t clock_t;
122    //@}
123
124    //@{
125    /// open(2) flag values.
126    static const int TGT_O_RDONLY    = 000000000; //!< O_RDONLY
127    static const int TGT_O_WRONLY    = 000000001; //!< O_WRONLY
128    static const int TGT_O_RDWR      = 000000002; //!< O_RDWR
129    static const int TGT_O_CREAT     = 000000100; //!< O_CREAT
130    static const int TGT_O_EXCL      = 000000200; //!< O_EXCL
131    static const int TGT_O_NOCTTY    = 000000400; //!< O_NOCTTY
132    static const int TGT_O_TRUNC     = 000001000; //!< O_TRUNC
133    static const int TGT_O_APPEND    = 000002000; //!< O_APPEND
134    static const int TGT_O_NONBLOCK  = 000004000; //!< O_NONBLOCK
135    static const int TGT_O_DSYNC     = 000010000; //!< O_DSYNC
136    static const int TGT_FASYNC      = 000020000; //!< FASYNC
137    static const int TGT_O_DIRECT    = 000200000; //!< O_DIRECT
138    static const int TGT_O_LARGEFILE = 000400000; //!< O_LARGEFILE
139    static const int TGT_O_DIRECTORY = 000040000; //!< O_DIRECTORY
140    static const int TGT_O_NOFOLLOW  = 000100000; //!< O_NOFOLLOW
141    static const int TGT_O_NOATIME   = 001000000; //!< O_NOATIME
142    static const int TGT_O_CLOEXEC   = 002000000; //!< O_NOATIME
143    static const int TGT_O_SYNC      = 004010000; //!< O_SYNC
144    static const int TGT_O_PATH      = 010000000; //!< O_PATH
145    //@}
146
147    static const unsigned TGT_MAP_SHARED        = 0x00001;
148    static const unsigned TGT_MAP_PRIVATE       = 0x00002;
149    static const unsigned TGT_MAP_ANON          = 0x00020;
150    static const unsigned TGT_MAP_DENYWRITE     = 0x00800;
151    static const unsigned TGT_MAP_EXECUTABLE    = 0x01000;
152    static const unsigned TGT_MAP_FILE          = 0x00000;
153    static const unsigned TGT_MAP_GROWSDOWN     = 0x00100;
154    static const unsigned TGT_MAP_HUGETLB       = 0x40000;
155    static const unsigned TGT_MAP_LOCKED        = 0x02000;
156    static const unsigned TGT_MAP_NONBLOCK      = 0x10000;
157    static const unsigned TGT_MAP_NORESERVE     = 0x04000;
158    static const unsigned TGT_MAP_POPULATE      = 0x08000;
159    static const unsigned TGT_MAP_STACK         = 0x20000;
160    static const unsigned TGT_MAP_ANONYMOUS     = 0x00020;
161    static const unsigned TGT_MAP_FIXED         = 0x00010;
162
163    static const unsigned NUM_MMAP_FLAGS;
164
165    /// For table().
166    static const int TBL_SYSINFO = 12;
167
168    /// Limit struct for getrlimit/setrlimit.
169    struct rlimit {
170        uint32_t  rlim_cur;     //!< soft limit
171        uint32_t  rlim_max;     //!< hard limit
172    };
173
174    /// For gettimeofday().
175    struct timeval {
176        int32_t tv_sec;         //!< seconds
177        int32_t tv_usec;        //!< microseconds
178    };
179
180    struct timespec {
181        int32_t tv_sec;   //!< seconds
182        int32_t tv_nsec;  //!< nanoseconds
183    };
184
185    // For writev/readv
186    struct tgt_iovec {
187        uint32_t iov_base; // void *
188        uint32_t iov_len;
189    };
190
191
192    typedef struct {
193        uint32_t st_dev;
194        uint32_t st_ino;
195        uint16_t st_mode;
196        uint16_t st_nlink;
197        uint16_t st_uid;
198        uint16_t st_gid;
199        uint32_t st_rdev;
200        uint32_t __pad1;
201        uint32_t st_size;
202        uint32_t st_blksize;
203        uint32_t __pad2;
204        uint32_t st_blocks;
205        uint32_t st_atimeX;
206        uint32_t st_atime_nsec;
207        uint32_t st_mtimeX;
208        uint32_t st_mtime_nsec;
209        uint32_t st_ctimeX;
210        uint32_t st_ctime_nsec;
211    } tgt_stat;
212
213    typedef struct {
214        uint64_t  st_dev;
215        uint8_t   __pad0[4];
216        uint32_t  __st_ino;
217        uint32_t  st_mode;
218        uint32_t  st_nlink;
219        uint32_t  st_uid;
220        uint32_t  st_gid;
221        uint64_t  st_rdev;
222        uint8_t   __pad3[4];
223        int64_t   __attribute__ ((aligned (8))) st_size;
224        uint32_t  st_blksize;
225        uint64_t  __attribute__ ((aligned (8))) st_blocks;
226        uint32_t  st_atimeX;
227        uint32_t  st_atime_nsec;
228        uint32_t  st_mtimeX;
229        uint32_t  st_mtime_nsec;
230        uint32_t  st_ctimeX;
231        uint32_t  st_ctime_nsec;
232        uint64_t  st_ino;
233    } tgt_stat64;
234
235    typedef struct {
236        int32_t  uptime;    /* Seconds since boot */
237        uint32_t loads[3];  /* 1, 5, and 15 minute load averages */
238        uint32_t totalram;  /* Total usable main memory size */
239        uint32_t freeram;   /* Available memory size */
240        uint32_t sharedram; /* Amount of shared memory */
241        uint32_t bufferram; /* Memory used by buffers */
242        uint32_t totalswap; /* Total swap space size */
243        uint32_t freeswap;  /* swap space still available */
244        uint16_t procs;     /* Number of current processes */
245        uint32_t totalhigh; /* Total high memory size */
246        uint32_t freehigh;  /* Available high memory size */
247        uint32_t mem_unit;  /* Memory unit size in bytes */
248    } tgt_sysinfo;
249
250    /// For getrusage().
251    struct rusage {
252        struct timeval ru_utime;        //!< user time used
253        struct timeval ru_stime;        //!< system time used
254        int32_t ru_maxrss;              //!< max rss
255        int32_t ru_ixrss;               //!< integral shared memory size
256        int32_t ru_idrss;               //!< integral unshared data "
257        int32_t ru_isrss;               //!< integral unshared stack "
258        int32_t ru_minflt;              //!< page reclaims - total vmfaults
259        int32_t ru_majflt;              //!< page faults
260        int32_t ru_nswap;               //!< swaps
261        int32_t ru_inblock;             //!< block input operations
262        int32_t ru_oublock;             //!< block output operations
263        int32_t ru_msgsnd;              //!< messages sent
264        int32_t ru_msgrcv;              //!< messages received
265        int32_t ru_nsignals;            //!< signals received
266        int32_t ru_nvcsw;               //!< voluntary context switches
267        int32_t ru_nivcsw;              //!< involuntary "
268    };
269
270    /// For times().
271    struct tms {
272        int32_t tms_utime;      //!< user time
273        int32_t tms_stime;      //!< system time
274        int32_t tms_cutime;     //!< user time of children
275        int32_t tms_cstime;     //!< system time of children
276    };
277
278    static void
279    archClone(uint64_t flags,
280              Process *pp, Process *cp,
281              ThreadContext *ptc, ThreadContext *ctc,
282              uint64_t stack, uint64_t tls)
283    {
284        ArmLinux::archClone(flags, pp, cp, ptc, ctc, stack, tls);
285
286        if (stack)
287            ctc->setIntReg(ArmISA::INTREG_SP, stack);
288    }
289};
290
291class ArmLinux64 : public ArmLinux
292{
293  public:
294
295    static const int TGT_SIGHUP         = 0x000001;
296    static const int TGT_SIGINT         = 0x000002;
297    static const int TGT_SIGQUIT        = 0x000003;
298    static const int TGT_SIGILL         = 0x000004;
299    static const int TGT_SIGTRAP        = 0x000005;
300    static const int TGT_SIGABRT        = 0x000006;
301    static const int TGT_SIGIOT         = 0x000006;
302    static const int TGT_SIGBUS         = 0x000007;
303    static const int TGT_SIGFPE         = 0x000008;
304    static const int TGT_SIGKILL        = 0x000009;
305    static const int TGT_SIGUSR1        = 0x00000a;
306    static const int TGT_SIGSEGV        = 0x00000b;
307    static const int TGT_SIGUSR2        = 0x00000c;
308    static const int TGT_SIGPIPE        = 0x00000d;
309    static const int TGT_SIGALRM        = 0x00000e;
310    static const int TGT_SIGTERM        = 0x00000f;
311    static const int TGT_SIGSTKFLT      = 0x000010;
312    static const int TGT_SIGCHLD        = 0x000011;
313    static const int TGT_SIGCONT        = 0x000012;
314    static const int TGT_SIGSTOP        = 0x000013;
315    static const int TGT_SIGTSTP        = 0x000014;
316    static const int TGT_SIGTTIN        = 0x000015;
317    static const int TGT_SIGTTOU        = 0x000016;
318    static const int TGT_SIGURG         = 0x000017;
319    static const int TGT_SIGXCPU        = 0x000018;
320    static const int TGT_SIGXFSZ        = 0x000019;
321    static const int TGT_SIGVTALRM      = 0x00001a;
322    static const int TGT_SIGPROF        = 0x00001b;
323    static const int TGT_SIGWINCH       = 0x00001c;
324    static const int TGT_SIGIO          = 0x00001d;
325    static const int TGT_SIGPOLL        = 0x00001d;
326    static const int TGT_SIGPWR         = 0x00001e;
327    static const int TGT_SIGSYS         = 0x00001f;
328    static const int TGT_SIGUNUSED      = 0x00001f;
329
330    /// This table maps the target open() flags to the corresponding
331    /// host open() flags.
332    static SyscallFlagTransTable openFlagTable[];
333
334    /// Number of entries in openFlagTable[].
335    static const int NUM_OPEN_FLAGS;
336
337    //@{
338    /// Basic ARM Linux types
339    typedef uint64_t size_t;
340    typedef uint64_t off_t;
341    typedef int64_t time_t;
342    typedef int64_t clock_t;
343    //@}
344
345    //@{
346    /// open(2) flag values.
347    static const int TGT_O_RDONLY    = 000000000; //!< O_RDONLY
348    static const int TGT_O_WRONLY    = 000000001; //!< O_WRONLY
349    static const int TGT_O_RDWR      = 000000002; //!< O_RDWR
350    static const int TGT_O_CREAT     = 000000100; //!< O_CREAT
351    static const int TGT_O_EXCL      = 000000200; //!< O_EXCL
352    static const int TGT_O_NOCTTY    = 000000400; //!< O_NOCTTY
353    static const int TGT_O_TRUNC     = 000001000; //!< O_TRUNC
354    static const int TGT_O_APPEND    = 000002000; //!< O_APPEND
355    static const int TGT_O_NONBLOCK  = 000004000; //!< O_NONBLOCK
356    static const int TGT_O_DSYNC     = 000010000; //!< O_DSYNC
357    static const int TGT_FASYNC      = 000020000; //!< FASYNC
358    static const int TGT_O_DIRECT    = 000200000; //!< O_DIRECT
359    static const int TGT_O_LARGEFILE = 000400000; //!< O_LARGEFILE
360    static const int TGT_O_DIRECTORY = 000040000; //!< O_DIRECTORY
361    static const int TGT_O_NOFOLLOW  = 000100000; //!< O_NOFOLLOW
362    static const int TGT_O_NOATIME   = 001000000; //!< O_NOATIME
363    static const int TGT_O_CLOEXEC   = 002000000; //!< O_NOATIME
364    static const int TGT_O_SYNC      = 004010000; //!< O_SYNC
365    static const int TGT_O_PATH      = 010000000; //!< O_PATH
366    //@}
367
368    /// For mmap().
369    static SyscallFlagTransTable mmapFlagTable[];
370
371    static const unsigned TGT_MAP_SHARED        = 0x00001;
372    static const unsigned TGT_MAP_PRIVATE       = 0x00002;
373    static const unsigned TGT_MAP_ANON          = 0x00020;
374    static const unsigned TGT_MAP_DENYWRITE     = 0x00800;
375    static const unsigned TGT_MAP_EXECUTABLE    = 0x01000;
376    static const unsigned TGT_MAP_FILE          = 0x00000;
377    static const unsigned TGT_MAP_GROWSDOWN     = 0x00100;
378    static const unsigned TGT_MAP_HUGETLB       = 0x40000;
379    static const unsigned TGT_MAP_LOCKED        = 0x02000;
380    static const unsigned TGT_MAP_NONBLOCK      = 0x10000;
381    static const unsigned TGT_MAP_NORESERVE     = 0x04000;
382    static const unsigned TGT_MAP_POPULATE      = 0x08000;
383    static const unsigned TGT_MAP_STACK         = 0x20000;
384    static const unsigned TGT_MAP_ANONYMOUS     = 0x00020;
385    static const unsigned TGT_MAP_FIXED         = 0x00010;
386
387    static const unsigned NUM_MMAP_FLAGS;
388
389    //@{
390    /// For getrusage().
391    static const int TGT_RUSAGE_SELF = 0;
392    static const int TGT_RUSAGE_CHILDREN = -1;
393    static const int TGT_RUSAGE_BOTH = -2;
394    //@}
395
396    //@{
397    /// ioctl() command codes.
398    static const unsigned TIOCGETP_   = 0x5401;
399    static const unsigned TIOCSETP_   = 0x80067409;
400    static const unsigned TIOCSETN_   = 0x8006740a;
401    static const unsigned TIOCSETC_   = 0x80067411;
402    static const unsigned TIOCGETC_   = 0x40067412;
403    static const unsigned FIONREAD_   = 0x4004667f;
404    static const unsigned TIOCISATTY_ = 0x2000745e;
405    static const unsigned TIOCGETS_   = 0x402c7413;
406    static const unsigned TIOCGETA_   = 0x5405;
407    static const unsigned TCSETAW_    = 0x5407;     // 2.6.15 kernel
408    //@}
409
410    /// For table().
411    static const int TBL_SYSINFO = 12;
412
413    /// Resource enumeration for getrlimit().
414    enum rlimit_resources {
415        TGT_RLIMIT_CPU = 0,
416        TGT_RLIMIT_FSIZE = 1,
417        TGT_RLIMIT_DATA = 2,
418        TGT_RLIMIT_STACK = 3,
419        TGT_RLIMIT_CORE = 4,
420        TGT_RLIMIT_RSS = 5,
421        TGT_RLIMIT_NPROC = 6,
422        TGT_RLIMIT_NOFILE = 7,
423        TGT_RLIMIT_MEMLOCK = 8,
424        TGT_RLIMIT_AS = 9,
425        TGT_RLIMIT_LOCKS = 10
426    };
427
428    /// Limit struct for getrlimit/setrlimit.
429    struct rlimit {
430        uint64_t  rlim_cur;     //!< soft limit
431        uint64_t  rlim_max;     //!< hard limit
432    };
433
434    /// For gettimeofday().
435    struct timeval {
436        int64_t tv_sec;         //!< seconds
437        int64_t tv_usec;        //!< microseconds
438    };
439
440    struct timespec {
441        int64_t tv_sec;   //!< seconds
442        int64_t tv_nsec;  //!< nanoseconds
443    };
444
445    // For writev/readv
446    struct tgt_iovec {
447        uint64_t iov_base; // void *
448        uint64_t iov_len;
449    };
450
451    typedef struct {
452        uint64_t st_dev;
453        uint64_t st_ino;
454        uint64_t st_nlink;
455        uint32_t st_mode;
456        uint32_t st_uid;
457        uint32_t st_gid;
458        uint32_t __pad0;
459        uint64_t st_rdev;
460        uint64_t st_size;
461        uint64_t st_blksize;
462        uint64_t st_blocks;
463        uint64_t st_atimeX;
464        uint64_t st_atime_nsec;
465        uint64_t st_mtimeX;
466        uint64_t st_mtime_nsec;
467        uint64_t st_ctimeX;
468        uint64_t st_ctime_nsec;
469    } tgt_stat;
470
471    typedef struct {
472        uint64_t st_dev;
473        uint64_t st_ino;
474        uint32_t st_mode;
475        uint32_t st_nlink;
476        uint32_t st_uid;
477        uint32_t st_gid;
478        uint32_t __pad0;
479        uint64_t st_rdev;
480        uint64_t st_size;
481        uint64_t st_blksize;
482        uint64_t st_blocks;
483        uint64_t st_atimeX;
484        uint64_t st_atime_nsec;
485        uint64_t st_mtimeX;
486        uint64_t st_mtime_nsec;
487        uint64_t st_ctimeX;
488        uint64_t st_ctime_nsec;
489    } tgt_stat64;
490
491    typedef struct {
492        int64_t  uptime;    /* Seconds since boot */
493        uint64_t loads[3];  /* 1, 5, and 15 minute load averages */
494        uint64_t totalram;  /* Total usable main memory size */
495        uint64_t freeram;   /* Available memory size */
496        uint64_t sharedram; /* Amount of shared memory */
497        uint64_t bufferram; /* Memory used by buffers */
498        uint64_t totalswap; /* Total swap space size */
499        uint64_t freeswap;  /* swap space still available */
500        uint16_t procs;     /* Number of current processes */
501        uint16_t pad;
502        uint64_t totalhigh; /* Total high memory size */
503        uint64_t freehigh;  /* Available high memory size */
504        uint32_t mem_unit;  /* Memory unit size in bytes */
505    } tgt_sysinfo;
506
507    /// For getrusage().
508    struct rusage {
509        struct timeval ru_utime;        //!< user time used
510        struct timeval ru_stime;        //!< system time used
511        int64_t ru_maxrss;              //!< max rss
512        int64_t ru_ixrss;               //!< integral shared memory size
513        int64_t ru_idrss;               //!< integral unshared data "
514        int64_t ru_isrss;               //!< integral unshared stack "
515        int64_t ru_minflt;              //!< page reclaims - total vmfaults
516        int64_t ru_majflt;              //!< page faults
517        int64_t ru_nswap;               //!< swaps
518        int64_t ru_inblock;             //!< block input operations
519        int64_t ru_oublock;             //!< block output operations
520        int64_t ru_msgsnd;              //!< messages sent
521        int64_t ru_msgrcv;              //!< messages received
522        int64_t ru_nsignals;            //!< signals received
523        int64_t ru_nvcsw;               //!< voluntary context switches
524        int64_t ru_nivcsw;              //!< involuntary "
525    };
526
527    /// For times().
528    struct tms {
529        int64_t tms_utime;      //!< user time
530        int64_t tms_stime;      //!< system time
531        int64_t tms_cutime;     //!< user time of children
532        int64_t tms_cstime;     //!< system time of children
533    };
534
535    static void archClone(uint64_t flags,
536                          Process *pp, Process *cp,
537                          ThreadContext *ptc, ThreadContext *ctc,
538                          uint64_t stack, uint64_t tls)
539    {
540        ArmLinux::archClone(flags, pp, cp, ptc, ctc, stack, tls);
541
542        if (stack)
543            ctc->setIntReg(ArmISA::INTREG_SP0, stack);
544    }
545};
546
547#endif
548