arch/um/kernel/skas/syscall_user.c

   1 /*
   2  * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
   3  * Licensed under the GPL
   4  */
   5
   6 #include <stdlib.h>
   7 #include <signal.h>
   8 #include "kern_util.h"
   9 #include "syscall_user.h"
  10 #include "sysdep/ptrace.h"
  11 #include "sysdep/sigcontext.h"
  12
  13 /* XXX Bogus */
  14 #define ERESTARTSYS     512
  15 #define ERESTARTNOINTR  513
  16 #define ERESTARTNOHAND  514
  17
  18 void handle_syscall(union uml_pt_regs *regs)
  19 {
  20         long result;
  21         int index;
  22
  23         index = record_syscall_start(UPT_SYSCALL_NR(regs));
  24
  25         syscall_trace(regs, 1);
  26         result = execute_syscall(regs);
  27
  28         REGS_SET_SYSCALL_RETURN(regs->skas.regs, result);
  29         if((result == -ERESTARTNOHAND) || (result == -ERESTARTSYS) ||
  30            (result == -ERESTARTNOINTR))
  31                 do_signal(result);
  32
  33         syscall_trace(regs, 0);
  34         record_syscall_end(index, result);
  35 }
  36
  37 /*
  38  * Overrides for Emacs so that we follow Linus's tabbing style.
  39  * Emacs will notice this stuff at the end of the file and automatically
  40  * adjust the settings for this buffer only.  This must remain at the end
  41  * of the file.
  42  * ---------------------------------------------------------------------------
  43  * Local variables:
  44  * c-file-style: "linux"
  45  * End:
  46  */