cleaning up syscalls in preparation for x86_64 port

[musl] / src / internal / syscall.h

#ifndef _SYSCALL_H
#define _SYSCALL_H

#define SYSCALL_LL(x) \
((union { long long ll; long l[2]; }){ .ll = x }).l[0], \
((union { long long ll; long l[2]; }){ .ll = x }).l[1]

#define SYSCALL_SIGSET_SIZE 8

#if defined(SYSCALL_STANDALONE)
#include <errno.h>
static inline long __syscall_ret(unsigned long r)
{
        if (r >= (unsigned long)-1 - 4096) {
                errno = -(long)r;
                return -1;
        }
        return (long)r;
}
#elif defined(SYSCALL_NORETURN)
static inline long __syscall_ret(unsigned long r)
{
        for(;;);
        return 0;
}
#elif defined(SYSCALL_RETURN_ERRNO)
static inline long __syscall_ret(unsigned long r)
{
        return -r;
}
#else
extern long __syscall_ret(unsigned long);
#endif

#define SYSCALL0 "int $128"

#ifdef __PIC__
#define SYSCALL "xchgl %%ebx,%2\n\t" SYSCALL0 "\n\txchgl %%ebx,%2"
#define EBX "m"
#else
#define SYSCALL SYSCALL0
#define EBX "b"
#endif

static inline long syscall0(long n)
{
        unsigned long ret;
        __asm__ __volatile__ (SYSCALL0 : "=a"(ret) : "a"(n) : "memory");
        return __syscall_ret(ret);
}

static inline long syscall1(long n, long a1)
{
        unsigned long ret;
        __asm__ __volatile__ (SYSCALL : "=a"(ret) : "a"(n), EBX(a1) : "memory");
        return __syscall_ret(ret);
}

static inline long syscall2(long n, long a1, long a2)
{
        unsigned long ret;
        __asm__ __volatile__ (SYSCALL : "=a"(ret) : "a"(n), EBX(a1), "c"(a2) : "memory");
        return __syscall_ret(ret);
}

static inline long syscall3(long n, long a1, long a2, long a3)
{
        unsigned long ret;
        __asm__ __volatile__ (SYSCALL : "=a"(ret) : "a"(n), EBX(a1), "c"(a2), "d"(a3) : "memory");
        return __syscall_ret(ret);
}

static inline long syscall4(long n, long a1, long a2, long a3, long a4)
{
        unsigned long ret;
        __asm__ __volatile__ (SYSCALL : "=a"(ret) : "a"(n), EBX(a1), "c"(a2), "d"(a3), "S"(a4) : "memory");
        return __syscall_ret(ret);
}

static inline long syscall5(long n, long a1, long a2, long a3, long a4, long a5)
{
        unsigned long ret;
        __asm__ __volatile__ (SYSCALL : "=a"(ret) : "a"(n), EBX(a1), "c"(a2), "d"(a3), "S"(a4), "D"(a5) : "memory");
        return __syscall_ret(ret);
}

#ifdef __PIC__
/* note: it's probably only safe to use this when a6 is on the stack */
static inline long syscall6(long n, long a1, long a2, long a3, long a4, long a5, long a6)
{
        unsigned long ret;
        __asm__ __volatile__ ("xchgl %%ebx,%2 ; pushl %1 ; pushl %%ebp ; movl %%eax,%%ebp ; movl 4(%%esp),%%eax ; int $128 ; popl %%ebp ; popl %%ecx ; xchgl %%ebx,%2"
                : "=a"(ret) : "g"(n), EBX(a1), "c"(a2), "d"(a3), "S"(a4), "D"(a5), "a"(a6) : "memory");
        return __syscall_ret(ret);
}
#else
static inline long syscall6(long n, long a1, long a2, long a3, long a4, long a5, long a6)
{
        unsigned long ret;
        __asm__ __volatile__ ("pushl %%ebp ; mov %1, %%ebp ; xchg %%ebp, %7 ; int $128 ; popl %%ebp"
                : "=a"(ret) : "g"(n), EBX(a1), "c"(a2), "d"(a3), "S"(a4), "D"(a5), "a"(a6) : "memory");
        return __syscall_ret(ret);
}
#endif

#define __NR_restart_syscall      0
#define __NR_exit                 1
#define __NR_fork                 2
#define __NR_read                 3
#define __NR_write                4
#define __NR_open                 5
#define __NR_close                6
#define __NR_waitpid              7
#define __NR_creat                8
#define __NR_link                 9
#define __NR_unlink              10
#define __NR_execve              11
#define __NR_chdir               12
#define __NR_time                13
#define __NR_mknod               14
#define __NR_chmod               15
#define __NR_lchown              16
#define __NR_break               17
#define __NR_oldstat             18
#define __NR_lseek               19
#define __NR_getpid              20
#define __NR_mount               21
#define __NR_umount              22
#define __NR_setuid              23
#define __NR_getuid              24
#define __NR_stime               25
#define __NR_ptrace              26
#define __NR_alarm               27
#define __NR_oldfstat            28
#define __NR_pause               29
#define __NR_utime               30
#define __NR_stty                31
#define __NR_gtty                32
#define __NR_access              33
#define __NR_nice                34
#define __NR_ftime               35
#define __NR_sync                36
#define __NR_kill                37
#define __NR_rename              38
#define __NR_mkdir               39
#define __NR_rmdir               40
#define __NR_dup                 41
#define __NR_pipe                42
#define __NR_times               43
#define __NR_prof                44
#define __NR_brk                 45
#define __NR_setgid              46
#define __NR_getgid              47
#define __NR_signal              48
#define __NR_geteuid             49
#define __NR_getegid             50
#define __NR_acct                51
#define __NR_umount2             52
#define __NR_lock                53
#define __NR_ioctl               54
#define __NR_fcntl               55
#define __NR_mpx                 56
#define __NR_setpgid             57
#define __NR_ulimit              58
#define __NR_oldolduname         59
#define __NR_umask               60
#define __NR_chroot              61
#define __NR_ustat               62
#define __NR_dup2                63
#define __NR_getppid             64
#define __NR_getpgrp             65
#define __NR_setsid              66
#define __NR_sigaction           67
#define __NR_sgetmask            68
#define __NR_ssetmask            69
#define __NR_setreuid            70
#define __NR_setregid            71
#define __NR_sigsuspend          72
#define __NR_sigpending          73
#define __NR_sethostname         74
#define __NR_setrlimit           75
#define __NR_getrlimit           76   /* Back compatible 2Gig limited rlimit */
#define __NR_getrusage           77
#define __NR_gettimeofday        78
#define __NR_settimeofday        79
#define __NR_getgroups           80
#define __NR_setgroups           81
#define __NR_select              82
#define __NR_symlink             83
#define __NR_oldlstat            84
#define __NR_readlink            85
#define __NR_uselib              86
#define __NR_swapon              87
#define __NR_reboot              88
#define __NR_readdir             89
#define __NR_mmap                90
#define __NR_munmap              91
#define __NR_truncate            92
#define __NR_ftruncate           93
#define __NR_fchmod              94
#define __NR_fchown              95
#define __NR_getpriority         96
#define __NR_setpriority         97
#define __NR_profil              98
#define __NR_statfs             99
#define __NR_fstatfs            100
#define __NR_ioperm             101
#define __NR_socketcall         102
#define __NR_syslog             103
#define __NR_setitimer          104
#define __NR_getitimer          105
#define __NR_stat               106
#define __NR_lstat              107
#define __NR_fstat              108
#define __NR_olduname           109
#define __NR_iopl               110
#define __NR_vhangup            111
#define __NR_idle               112
#define __NR_vm86old            113
#define __NR_wait4              114
#define __NR_swapoff            115
#define __NR_sysinfo            116
#define __NR_ipc                117
#define __NR_fsync              118
#define __NR_sigreturn          119
#define __NR_clone              120
#define __NR_setdomainname      121
#define __NR_uname              122
#define __NR_modify_ldt         123
#define __NR_adjtimex           124
#define __NR_mprotect           125
#define __NR_sigprocmask        126
#define __NR_create_module      127
#define __NR_init_module        128
#define __NR_delete_module      129
#define __NR_get_kernel_syms    130
#define __NR_quotactl           131
#define __NR_getpgid            132
#define __NR_fchdir             133
#define __NR_bdflush            134
#define __NR_sysfs              135
#define __NR_personality        136
#define __NR_afs_syscall        137
#define __NR_setfsuid           138
#define __NR_setfsgid           139
#define __NR__llseek            140
#define __NR_getdents           141
#define __NR__newselect         142
#define __NR_flock              143
#define __NR_msync              144
#define __NR_readv              145
#define __NR_writev             146
#define __NR_getsid             147
#define __NR_fdatasync          148
#define __NR__sysctl            149
#define __NR_mlock              150
#define __NR_munlock            151
#define __NR_mlockall           152
#define __NR_munlockall         153
#define __NR_sched_setparam             154
#define __NR_sched_getparam             155
#define __NR_sched_setscheduler         156
#define __NR_sched_getscheduler         157
#define __NR_sched_yield                158
#define __NR_sched_get_priority_max     159
#define __NR_sched_get_priority_min     160
#define __NR_sched_rr_get_interval      161
#define __NR_nanosleep          162
#define __NR_mremap             163
#define __NR_setresuid          164
#define __NR_getresuid          165
#define __NR_vm86               166
#define __NR_query_module       167
#define __NR_poll               168
#define __NR_nfsservctl         169
#define __NR_setresgid          170
#define __NR_getresgid          171
#define __NR_prctl              172
#define __NR_rt_sigreturn       173
#define __NR_rt_sigaction       174
#define __NR_rt_sigprocmask     175
#define __NR_rt_sigpending      176
#define __NR_rt_sigtimedwait    177
#define __NR_rt_sigqueueinfo    178
#define __NR_rt_sigsuspend      179
#define __NR_pread64            180
#define __NR_pwrite64           181
#define __NR_chown              182
#define __NR_getcwd             183
#define __NR_capget             184
#define __NR_capset             185
#define __NR_sigaltstack        186
#define __NR_sendfile           187
#define __NR_getpmsg            188
#define __NR_putpmsg            189
#define __NR_vfork              190
#define __NR_ugetrlimit         191
#define __NR_mmap2              192
#define __NR_truncate64         193
#define __NR_ftruncate64        194
#define __NR_stat64             195
#define __NR_lstat64            196
#define __NR_fstat64            197
#define __NR_lchown32           198
#define __NR_getuid32           199
#define __NR_getgid32           200
#define __NR_geteuid32          201
#define __NR_getegid32          202
#define __NR_setreuid32         203
#define __NR_setregid32         204
#define __NR_getgroups32        205
#define __NR_setgroups32        206
#define __NR_fchown32           207
#define __NR_setresuid32        208
#define __NR_getresuid32        209
#define __NR_setresgid32        210
#define __NR_getresgid32        211
#define __NR_chown32            212
#define __NR_setuid32           213
#define __NR_setgid32           214
#define __NR_setfsuid32         215
#define __NR_setfsgid32         216
#define __NR_pivot_root         217
#define __NR_mincore            218
#define __NR_madvise            219
#define __NR_madvise1           219
#define __NR_getdents64         220
#define __NR_fcntl64            221
/* 223 is unused */
#define __NR_gettid             224
#define __NR_readahead          225
#define __NR_setxattr           226
#define __NR_lsetxattr          227
#define __NR_fsetxattr          228
#define __NR_getxattr           229
#define __NR_lgetxattr          230
#define __NR_fgetxattr          231
#define __NR_listxattr          232
#define __NR_llistxattr         233
#define __NR_flistxattr         234
#define __NR_removexattr        235
#define __NR_lremovexattr       236
#define __NR_fremovexattr       237
#define __NR_tkill              238
#define __NR_sendfile64         239
#define __NR_futex              240
#define __NR_sched_setaffinity  241
#define __NR_sched_getaffinity  242
#define __NR_set_thread_area    243
#define __NR_get_thread_area    244
#define __NR_io_setup           245
#define __NR_io_destroy         246
#define __NR_io_getevents       247
#define __NR_io_submit          248
#define __NR_io_cancel          249
#define __NR_fadvise64          250
/* 251 is available for reuse (was briefly sys_set_zone_reclaim) */
#define __NR_exit_group         252
#define __NR_lookup_dcookie     253
#define __NR_epoll_create       254
#define __NR_epoll_ctl          255
#define __NR_epoll_wait         256
#define __NR_remap_file_pages   257
#define __NR_set_tid_address    258
#define __NR_timer_create       259
#define __NR_timer_settime      (__NR_timer_create+1)
#define __NR_timer_gettime      (__NR_timer_create+2)
#define __NR_timer_getoverrun   (__NR_timer_create+3)
#define __NR_timer_delete       (__NR_timer_create+4)
#define __NR_clock_settime      (__NR_timer_create+5)
#define __NR_clock_gettime      (__NR_timer_create+6)
#define __NR_clock_getres       (__NR_timer_create+7)
#define __NR_clock_nanosleep    (__NR_timer_create+8)
#define __NR_statfs64           268
#define __NR_fstatfs64          269
#define __NR_tgkill             270
#define __NR_utimes             271
#define __NR_fadvise64_64       272
#define __NR_vserver            273
#define __NR_mbind              274
#define __NR_get_mempolicy      275
#define __NR_set_mempolicy      276
#define __NR_mq_open            277
#define __NR_mq_unlink          (__NR_mq_open+1)
#define __NR_mq_timedsend       (__NR_mq_open+2)
#define __NR_mq_timedreceive    (__NR_mq_open+3)
#define __NR_mq_notify          (__NR_mq_open+4)
#define __NR_mq_getsetattr      (__NR_mq_open+5)
#define __NR_kexec_load         283
#define __NR_waitid             284
/* #define __NR_sys_setaltroot  285 */
#define __NR_add_key            286
#define __NR_request_key        287
#define __NR_keyctl             288
#define __NR_ioprio_set         289
#define __NR_ioprio_get         290
#define __NR_inotify_init       291
#define __NR_inotify_add_watch  292
#define __NR_inotify_rm_watch   293
#define __NR_migrate_pages      294
#define __NR_openat             295
#define __NR_mkdirat            296
#define __NR_mknodat            297
#define __NR_fchownat           298
#define __NR_futimesat          299
#define __NR_fstatat64          300
#define __NR_unlinkat           301
#define __NR_renameat           302
#define __NR_linkat             303
#define __NR_symlinkat          304
#define __NR_readlinkat         305
#define __NR_fchmodat           306
#define __NR_faccessat          307
#define __NR_pselect6           308
#define __NR_ppoll              309
#define __NR_unshare            310
#define __NR_set_robust_list    311
#define __NR_get_robust_list    312
#define __NR_splice             313
#define __NR_sync_file_range    314
#define __NR_tee                315
#define __NR_vmsplice           316
#define __NR_move_pages         317
#define __NR_getcpu             318
#define __NR_epoll_pwait        319
#define __NR_utimensat          320
#define __NR_signalfd           321
#define __NR_timerfd_create     322
#define __NR_eventfd            323
#define __NR_fallocate          324
#define __NR_timerfd_settime    325
#define __NR_timerfd_gettime    326
#define __NR_signalfd4          327
#define __NR_eventfd2           328
#define __NR_epoll_create1      329
#define __NR_dup3               330
#define __NR_pipe2              331
#define __NR_inotify_init1      332
#define __NR_preadv             333
#define __NR_pwritev            334

/* fixup legacy 16-bit junk */
#undef __NR_lchown
#undef __NR_getuid
#undef __NR_getgid
#undef __NR_geteuid
#undef __NR_getegid
#undef __NR_setreuid
#undef __NR_setregid
#undef __NR_getgroups
#undef __NR_setgroups
#undef __NR_fchown
#undef __NR_setresuid
#undef __NR_getresuid
#undef __NR_setresgid
#undef __NR_getresgid
#undef __NR_chown
#undef __NR_setuid
#undef __NR_setgid
#undef __NR_setfsuid
#undef __NR_setfsgid
#define __NR_lchown __NR_lchown32
#define __NR_getuid __NR_getuid32
#define __NR_getgid __NR_getgid32
#define __NR_geteuid __NR_geteuid32
#define __NR_getegid __NR_getegid32
#define __NR_setreuid __NR_setreuid32
#define __NR_setregid __NR_setregid32
#define __NR_getgroups __NR_getgroups32
#define __NR_setgroups __NR_setgroups32
#define __NR_fchown __NR_fchown32
#define __NR_setresuid __NR_setresuid32
#define __NR_getresuid __NR_getresuid32
#define __NR_setresgid __NR_setresgid32
#define __NR_getresgid __NR_getresgid32
#define __NR_chown __NR_chown32
#define __NR_setuid __NR_setuid32
#define __NR_setgid __NR_setgid32
#define __NR_setfsuid __NR_setfsuid32
#define __NR_setfsgid __NR_setfsgid32


#undef O_LARGEFILE
#define O_LARGEFILE 0100000

/* the following are needed for iso c functions to use */
#define __syscall_open(filename, flags, mode) syscall3(__NR_open, (long)(filename), (flags)|O_LARGEFILE, (mode))
#define __syscall_read(fd, buf, len)          syscall3(__NR_read, (fd), (long)(buf), (len))
#define __syscall_write(fd, buf, len)         syscall3(__NR_write, (fd), (long)(buf), (len))
#define __syscall_close(fd)                   syscall1(__NR_close, (fd))
#define __syscall_fcntl(fd, cmd, arg)         syscall3(__NR_fcntl64, (fd), (cmd), (long)(arg))
#define __syscall_dup2(old, new)              syscall2(__NR_dup2, (old), (new))
#define __syscall_unlink(path)                syscall1(__NR_unlink, (long)(path))
#define __syscall_getpid()                    syscall0(__NR_getpid)
#define __syscall_kill(pid,sig)               syscall2(__NR_kill, (pid), (sig))
#define __syscall_sigaction(sig,new,old)      syscall4(__NR_rt_sigaction, (sig), (long)(new), (long)(old), SYSCALL_SIGSET_SIZE)
#define __syscall_ioctl(fd,ioc,arg)           syscall3(__NR_ioctl, (fd), (ioc), (long)(arg))
#define __syscall_exit(code)                  syscall1(__NR_exit, code)

#endif