text: #ifndef _INTERNAL_SYSCALL_H
  #define _INTERNAL_SYSCALL_H
  
  #include <sys/syscall.h>
  #include "syscall_arch.h"
  
  #ifndef SYSCALL_RLIM_INFINITY
  #define SYSCALL_RLIM_INFINITY (~0ULL)
  #endif
  
  #ifndef SYSCALL_MMAP2_UNIT
  #define SYSCALL_MMAP2_UNIT 4096ULL
  #endif
  
  #ifndef __scc
  #define __scc(X) ((long) (X))
  typedef long syscall_arg_t;
  #endif
  
  __attribute__((visibility("hidden")))
  long __syscall_ret(unsigned long), __syscall(syscall_arg_t, ...),
  	__syscall_cp(syscall_arg_t, syscall_arg_t, syscall_arg_t, syscall_arg_t,
  	             syscall_arg_t, syscall_arg_t, syscall_arg_t);
  
  #ifndef __EMSCRIPTEN__
  #ifdef SYSCALL_NO_INLINE
  #define __syscall0(n) (__syscall)(n)
  #define __syscall1(n,a) (__syscall)(n,__scc(a))
  #define __syscall2(n,a,b) (__syscall)(n,__scc(a),__scc(b))
  #define __syscall3(n,a,b,c) (__syscall)(n,__scc(a),__scc(b),__scc(c))
  #define __syscall4(n,a,b,c,d) (__syscall)(n,__scc(a),__scc(b),__scc(c),__scc(d))
  #define __syscall5(n,a,b,c,d,e) (__syscall)(n,__scc(a),__scc(b),__scc(c),__scc(d),__scc(e))
  #define __syscall6(n,a,b,c,d,e,f) (__syscall)(n,__scc(a),__scc(b),__scc(c),__scc(d),__scc(e),__scc(f))
  #else
  #define __syscall1(n,a) __syscall1(n,__scc(a))
  #define __syscall2(n,a,b) __syscall2(n,__scc(a),__scc(b))
  #define __syscall3(n,a,b,c) __syscall3(n,__scc(a),__scc(b),__scc(c))
  #define __syscall4(n,a,b,c,d) __syscall4(n,__scc(a),__scc(b),__scc(c),__scc(d))
  #define __syscall5(n,a,b,c,d,e) __syscall5(n,__scc(a),__scc(b),__scc(c),__scc(d),__scc(e))
  #define __syscall6(n,a,b,c,d,e,f) __syscall6(n,__scc(a),__scc(b),__scc(c),__scc(d),__scc(e),__scc(f))
  #endif
  #define __syscall7(n,a,b,c,d,e,f,g) (__syscall)(n,__scc(a),__scc(b),__scc(c),__scc(d),__scc(e),__scc(f),__scc(g))
  #else // __EMSCRIPTEN__
  #define __syscall_emscripten(n, ...) __syscall##n(n, ##__VA_ARGS__)
  #define __syscall_emscripten0(n) __syscall_emscripten(n)
  #define __syscall_emscripten1(n,a) __syscall_emscripten(n,__scc(a))
  #define __syscall_emscripten2(n,a,b) __syscall_emscripten(n,__scc(a),__scc(b))
  #define __syscall_emscripten3(n,a,b,c) __syscall_emscripten(n,__scc(a),__scc(b),__scc(c))
  #define __syscall_emscripten4(n,a,b,c,d) __syscall_emscripten(n,__scc(a),__scc(b),__scc(c),__scc(d))
  #define __syscall_emscripten5(n,a,b,c,d,e) __syscall_emscripten(n,__scc(a),__scc(b),__scc(c),__scc(d),__scc(e))
  #define __syscall_emscripten6(n,a,b,c,d,e,f) __syscall_emscripten(n,__scc(a),__scc(b),__scc(c),__scc(d),__scc(e),__scc(f))
  #define __syscall_emscripten7(n,a,b,c,d,e,f,g) __syscall_emscripten(n,__scc(a),__scc(b),__scc(c),__scc(d),__scc(e),__scc(f),__scc(g))
  #endif // __EMSCRIPTEN__
  
  #define __SYSCALL_NARGS_X(a,b,c,d,e,f,g,h,n,...) n
  #define __SYSCALL_NARGS(...) __SYSCALL_NARGS_X(__VA_ARGS__,7,6,5,4,3,2,1,0,)
  #define __SYSCALL_CONCAT_X(a,b) a##b
  #define __SYSCALL_CONCAT(a,b) __SYSCALL_CONCAT_X(a,b)
  #define __SYSCALL_DISP(b,...) __SYSCALL_CONCAT(b,__SYSCALL_NARGS(__VA_ARGS__))(__VA_ARGS__)
  
  #ifndef __EMSCRIPTEN__
  #define __syscall(...) __SYSCALL_DISP(__syscall,__VA_ARGS__)
  #else
  #define __syscall(...) __SYSCALL_DISP(__syscall_emscripten,__VA_ARGS__)
  #endif
  
  #define syscall(...) __syscall_ret(__syscall(__VA_ARGS__))
  
  #define socketcall __socketcall
  #define socketcall_cp __socketcall_cp
  
  #ifndef __EMSCRIPTEN__
  #define __syscall_cp0(n) (__syscall_cp)(n,0,0,0,0,0,0)
  #define __syscall_cp1(n,a) (__syscall_cp)(n,__scc(a),0,0,0,0,0)
  #define __syscall_cp2(n,a,b) (__syscall_cp)(n,__scc(a),__scc(b),0,0,0,0)
  #define __syscall_cp3(n,a,b,c) (__syscall_cp)(n,__scc(a),__scc(b),__scc(c),0,0,0)
  #define __syscall_cp4(n,a,b,c,d) (__syscall_cp)(n,__scc(a),__scc(b),__scc(c),__scc(d),0,0)
  #define __syscall_cp5(n,a,b,c,d,e) (__syscall_cp)(n,__scc(a),__scc(b),__scc(c),__scc(d),__scc(e),0)
  #define __syscall_cp6(n,a,b,c,d,e,f) (__syscall_cp)(n,__scc(a),__scc(b),__scc(c),__scc(d),__scc(e),__scc(f))
  
  #define __syscall_cp(...) __SYSCALL_DISP(__syscall_cp,__VA_ARGS__)
  #else // __EMSCRIPTEN__
  #define __syscall_cp(...) __syscall(__VA_ARGS__)
  #define SYSCALL_USE_SOCKETCALL
  #endif // __EMSCRIPTEN__
  
  #define syscall_cp(...) __syscall_ret(__syscall_cp(__VA_ARGS__))
  
  #ifndef SYSCALL_USE_SOCKETCALL
  #define __socketcall(nm,a,b,c,d,e,f) syscall(SYS_##nm, a, b, c, d, e, f)
  #define __socketcall_cp(nm,a,b,c,d,e,f) syscall_cp(SYS_##nm, a, b, c, d, e, f)
  #else
  #define __socketcall(nm,a,b,c,d,e,f) syscall(SYS_socketcall, __SC_##nm, \
      ((long [6]){ (long)a, (long)b, (long)c, (long)d, (long)e, (long)f }))
  #define __socketcall_cp(nm,a,b,c,d,e,f) syscall_cp(SYS_socketcall, __SC_##nm, \
      ((long [6]){ (long)a, (long)b, (long)c, (long)d, (long)e, (long)f }))
  #endif
  
  /* fixup legacy 16-bit junk */
  
  #ifdef SYS_getuid32
  #undef SYS_lchown
  #undef SYS_getuid
  #undef SYS_getgid
  #undef SYS_geteuid
  #undef SYS_getegid
  #undef SYS_setreuid
  #undef SYS_setregid
  #undef SYS_getgroups
  #undef SYS_setgroups
  #undef SYS_fchown
  #undef SYS_setresuid
  #undef SYS_getresuid
  #undef SYS_setresgid
  #undef SYS_getresgid
  #undef SYS_chown
  #undef SYS_setuid
  #undef SYS_setgid
  #undef SYS_setfsuid
  #undef SYS_setfsgid
  #define SYS_lchown SYS_lchown32
  #define SYS_getuid SYS_getuid32
  #define SYS_getgid SYS_getgid32
  #define SYS_geteuid SYS_geteuid32
  #define SYS_getegid SYS_getegid32
  #define SYS_setreuid SYS_setreuid32
  #define SYS_setregid SYS_setregid32
  #define SYS_getgroups SYS_getgroups32
  #define SYS_setgroups SYS_setgroups32
  #define SYS_fchown SYS_fchown32
  #define SYS_setresuid SYS_setresuid32
  #define SYS_getresuid SYS_getresuid32
  #define SYS_setresgid SYS_setresgid32
  #define SYS_getresgid SYS_getresgid32
  #define SYS_chown SYS_chown32
  #define SYS_setuid SYS_setuid32
  #define SYS_setgid SYS_setgid32
  #define SYS_setfsuid SYS_setfsuid32
  #define SYS_setfsgid SYS_setfsgid32
  #endif
  
  
  /* fixup legacy 32-bit-vs-lfs64 junk */
  
  #ifdef SYS_fcntl64
  #undef SYS_fcntl
  #define SYS_fcntl SYS_fcntl64
  #endif
  
  #ifdef SYS_getdents64
  #undef SYS_getdents
  #define SYS_getdents SYS_getdents64
  #endif
  
  #ifdef SYS_ftruncate64
  #undef SYS_ftruncate
  #undef SYS_truncate
  #define SYS_ftruncate SYS_ftruncate64
  #define SYS_truncate SYS_truncate64
  #endif
  
  #ifdef SYS_stat64
  #undef SYS_stat
  #define SYS_stat SYS_stat64
  #endif
  
  #ifdef SYS_fstat64
  #undef SYS_fstat
  #define SYS_fstat SYS_fstat64
  #endif
  
  #ifdef SYS_lstat64
  #undef SYS_lstat
  #define SYS_lstat SYS_lstat64
  #endif
  
  #ifdef SYS_statfs64
  #undef SYS_statfs
  #define SYS_statfs SYS_statfs64
  #endif
  
  #ifdef SYS_fstatfs64
  #undef SYS_fstatfs
  #define SYS_fstatfs SYS_fstatfs64
  #endif
  
  #if defined(SYS_newfstatat)
  #undef SYS_fstatat
  #define SYS_fstatat SYS_newfstatat
  #elif defined(SYS_fstatat64)
  #undef SYS_fstatat
  #define SYS_fstatat SYS_fstatat64
  #endif
  
  #ifdef SYS_ugetrlimit
  #undef SYS_getrlimit
  #define SYS_getrlimit SYS_ugetrlimit
  #endif
  
  #ifdef SYS__newselect
  #undef SYS_select
  #define SYS_select SYS__newselect
  #endif
  
  #ifdef SYS_pread64
  #undef SYS_pread
  #undef SYS_pwrite
  #define SYS_pread SYS_pread64
  #define SYS_pwrite SYS_pwrite64
  #endif
  
  #ifdef SYS_fadvise64_64
  #undef SYS_fadvise
  #define SYS_fadvise SYS_fadvise64_64
  #elif defined(SYS_fadvise64)
  #undef SYS_fadvise
  #define SYS_fadvise SYS_fadvise64
  #endif
  
  #ifdef SYS_sendfile64
  #undef SYS_sendfile
  #define SYS_sendfile SYS_sendfile64
  #endif
  
  /* socketcall calls */
  
  #define __SC_socket      1
  #define __SC_bind        2
  #define __SC_connect     3
  #define __SC_listen      4
  #define __SC_accept      5
  #define __SC_getsockname 6
  #define __SC_getpeername 7
  #define __SC_socketpair  8
  #define __SC_send        9
  #define __SC_recv        10
  #define __SC_sendto      11
  #define __SC_recvfrom    12
  #define __SC_shutdown    13
  #define __SC_setsockopt  14
  #define __SC_getsockopt  15
  #define __SC_sendmsg     16
  #define __SC_recvmsg     17
  #define __SC_accept4     18
  #define __SC_recvmmsg    19
  #define __SC_sendmmsg    20
  
  #ifndef __EMSCRIPTEN__
  #ifdef SYS_open
  #define __sys_open2(x,pn,fl) __syscall2(SYS_open, pn, (fl)|O_LARGEFILE)
  #define __sys_open3(x,pn,fl,mo) __syscall3(SYS_open, pn, (fl)|O_LARGEFILE, mo)
  #define __sys_open_cp2(x,pn,fl) __syscall_cp2(SYS_open, pn, (fl)|O_LARGEFILE)
  #define __sys_open_cp3(x,pn,fl,mo) __syscall_cp3(SYS_open, pn, (fl)|O_LARGEFILE, mo)
  #else
  #define __sys_open2(x,pn,fl) __syscall3(SYS_openat, AT_FDCWD, pn, (fl)|O_LARGEFILE)
  #define __sys_open3(x,pn,fl,mo) __syscall4(SYS_openat, AT_FDCWD, pn, (fl)|O_LARGEFILE, mo)
  #define __sys_open_cp2(x,pn,fl) __syscall_cp3(SYS_openat, AT_FDCWD, pn, (fl)|O_LARGEFILE)
  #define __sys_open_cp3(x,pn,fl,mo) __syscall_cp4(SYS_openat, AT_FDCWD, pn, (fl)|O_LARGEFILE, mo)
  #endif
  #else // __EMSCRIPTEN__
  #define __sys_open2(x,pn,fl) __SYSCALL_CONCAT(__syscall, SYS_open)(SYS_open, __scc(pn), __scc((fl)|O_LARGEFILE))
  #define __sys_open3(x,pn,fl,mo) __SYSCALL_CONCAT(__syscall, SYS_open)(SYS_open, __scc(pn), __scc((fl)|O_LARGEFILE), __scc(mo))
  #define __sys_open_cp2(x,pn,fl) __SYSCALL_CONCAT(__syscall, SYS_open)(SYS_open, __scc(pn), __scc((fl)|O_LARGEFILE))
  #define __sys_open_cp3(x,pn,fl,mo) __SYSCALL_CONCAT(__syscall, SYS_open)(SYS_open, __scc(pn), __scc((fl)|O_LARGEFILE), __scc(mo))
  #endif
  #define __sys_open(...) __SYSCALL_DISP(__sys_open,,__VA_ARGS__)
  #define sys_open(...) __syscall_ret(__sys_open(__VA_ARGS__))
  
  #define __sys_open_cp(...) __SYSCALL_DISP(__sys_open_cp,,__VA_ARGS__)
  #define sys_open_cp(...) __syscall_ret(__sys_open_cp(__VA_ARGS__))
  
  #endif
  