ia64-syscall.S

   1 /* derived from glibc sysdeps/unix/sysv/linux/ia64/sysdep.S */
   2
   3 #define __ASSEMBLY__
   4
   5 #include <asm/asmmacro.h>
   6 #include <asm/unistd.h>
   7
   8 ENTRY(__syscall_error)
   9         .prologue ASM_UNW_PRLG_RP|ASM_UNW_PRLG_PFS, ASM_UNW_PRLG_GRSAVE(0)
  10         alloc   r33=ar.pfs, 0, 4, 0, 0
  11         mov     r32=rp
  12         .body
  13         mov     r35=r8
  14         mov     r34=r1
  15         ;;
  16         br.call.sptk.many b0 = __errno_location
  17 .Lret0:         /* force new bundle */
  18         st4     [r8]=r35
  19         mov     r1=r34
  20         mov     rp=r32
  21         mov     r8=-1
  22         mov     ar.pfs=r33
  23         br.ret.sptk.few b0
  24 END(__syscall_error)
  25
  26 GLOBAL_ENTRY(__ia64_syscall)
  27         mov r15=r37             /* syscall number */
  28         break __BREAK_SYSCALL
  29         cmp.eq p6,p0=-1,r10     /* r10 = -1 on error */
  30 (p6)    br.cond.spnt.few __syscall_error
  31         br.ret.sptk.few b0
  32 .endp __ia64_syscall