src/syscall.h

   1 #include <sys/syscall.h>
   2 #include <unistd.h>
   3 #include <errno.h>
   4
   5 #define _SYMSTR(str)    #str
   6 #define SYMSTR(str)     _SYMSTR(str)
   7
   8 #define SYMVER(compat_sym, orig_sym, ver_sym)   \
   9         __asm__(".symver " SYMSTR(compat_sym) "," SYMSTR(orig_sym) "@LIBAIO_" SYMSTR(ver_sym));
  10
  11 #define DEFSYMVER(compat_sym, orig_sym, ver_sym)        \
  12         __asm__(".symver " SYMSTR(compat_sym) "," SYMSTR(orig_sym) "@@LIBAIO_" SYMSTR(ver_sym));
  13
  14 #if defined(__i386__)
  15 #include "syscall-i386.h"
  16 #elif defined(__x86_64__)
  17 #include "syscall-x86_64.h"
  18 #elif defined(__ia64__)
  19 #include "syscall-ia64.h"
  20 #elif defined(__PPC__)
  21 #include "syscall-ppc.h"
  22 #elif defined(__s390__)
  23 #include "syscall-s390.h"
  24 #elif defined(__alpha__)
  25 #include "syscall-alpha.h"
  26 #elif defined(__arm__)
  27 #include "syscall-arm.h"
  28 #elif defined(__sparc__)
  29 #include "syscall-sparc.h"
  30 #elif defined(__aarch64__) || defined(__loongarch__) || defined(__riscv)
  31 #include "syscall-generic.h"
  32 #else
  33 #warning "using system call numbers from sys/syscall.h"
  34 #endif
  35
  36 #define _body_io_syscall(sname, args...)        \
  37 {                                               \
  38         int ret, saved_errno;                   \
  39         saved_errno = errno;                    \
  40         ret= syscall(__NR_##sname, ## args);    \
  41         if (ret < 0) {                          \
  42                 ret = -errno;                   \
  43                 errno = saved_errno;            \
  44         }                                       \
  45         return ret;                             \
  46 }
  47
  48 #define io_syscall1(type,fname,sname,type1,arg1) \
  49 type fname(type1 arg1) \
  50 _body_io_syscall(sname, (long)arg1)
  51
  52 #define io_syscall2(type,fname,sname,type1,arg1,type2,arg2) \
  53 type fname(type1 arg1,type2 arg2) \
  54 _body_io_syscall(sname, (long)arg1, (long)arg2)
  55
  56 #define io_syscall3(type,fname,sname,type1,arg1,type2,arg2,type3,arg3) \
  57 type fname(type1 arg1,type2 arg2,type3 arg3) \
  58 _body_io_syscall(sname, (long)arg1, (long)arg2, (long)arg3)
  59
  60 #define io_syscall4(type,fname,sname,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
  61 type fname (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
  62 _body_io_syscall(sname, (long)arg1, (long)arg2, (long)arg3, (long)arg4)
  63
  64 #define io_syscall5(type,fname,sname,type1,arg1,type2,arg2,type3,arg3,type4,arg4, type5,arg5) \
  65 type fname (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \
  66 _body_io_syscall(sname, (long)arg1, (long)arg2, (long)arg3, (long)arg4, (long)arg5)
  67
  68 #define io_syscall6(type,fname,sname,type1,arg1,type2,arg2,type3,arg3, \
  69                 type4,arg4,type5,arg5,type6,arg6) \
  70 type fname (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5, \
  71                 type6 arg6) \
  72 _body_io_syscall(sname, (long)arg1, (long)arg2, (long)arg3, (long)arg4, \
  73                (long)arg5, (long)arg6)