arch/um/include/sysdep-x86_64/sigcontext.h

   1 /*
   2  * Copyright 2003 PathScale, Inc.
   3  *
   4  * Licensed under the GPL
   5  */
   6
   7 #ifndef __SYSDEP_X86_64_SIGCONTEXT_H
   8 #define __SYSDEP_X86_64_SIGCONTEXT_H
   9
  10 #include <sysdep/sc.h>
  11
  12 #define IP_RESTART_SYSCALL(ip) ((ip) -= 2)
  13
  14 #define SC_RESTART_SYSCALL(sc) IP_RESTART_SYSCALL(SC_IP(sc))
  15 #define SC_SET_SYSCALL_RETURN(sc, result) SC_RAX(sc) = (result)
  16
  17 #define SC_FAULT_ADDR(sc) SC_CR2(sc)
  18 #define SC_FAULT_TYPE(sc) SC_ERR(sc)
  19
  20 #define FAULT_WRITE(err) ((err) & 2)
  21
  22 #define SC_FAULT_WRITE(sc) FAULT_WRITE(SC_FAULT_TYPE(sc))
  23
  24 #define SC_TRAP_TYPE(sc) SC_TRAPNO(sc)
  25
  26 /* ptrace expects that, at the start of a system call, %eax contains
  27  * -ENOSYS, so this makes it so.
  28  */
  29
  30 #define SC_START_SYSCALL(sc) do SC_RAX(sc) = -ENOSYS; while(0)
  31
  32 #define SEGV_IS_FIXABLE(trap) ((trap) == 14)
  33 #define SC_SEGV_IS_FIXABLE(sc) SEGV_IS_FIXABLE(SC_TRAP_TYPE(sc))
  34
  35 extern unsigned long *sc_sigmask(void *sc_ptr);
  36
  37 #endif
  38
  39 /*
  40  * Overrides for Emacs so that we follow Linus's tabbing style.
  41  * Emacs will notice this stuff at the end of the file and automatically
  42  * adjust the settings for this buffer only.  This must remain at the end
  43  * of the file.
  44  * ---------------------------------------------------------------------------
  45  * Local variables:
  46  * c-file-style: "linux"
  47  * End:
  48  */
  49