coregrind/pub_core_dispatch_asm.h

   1
   2 /*--------------------------------------------------------------------*/
   3 /*--- Asm-only dispatcher stuff.           pub_core_dispatch_asm.h ---*/
   4 /*--------------------------------------------------------------------*/
   5
   6 /*
   7    This file is part of Valgrind, a dynamic binary instrumentation
   8    framework.
   9
  10    Copyright (C) 2000-2017 Julian Seward
  11       jseward@acm.org
  12
  13    This program is free software; you can redistribute it and/or
  14    modify it under the terms of the GNU General Public License as
  15    published by the Free Software Foundation; either version 2 of the
  16    License, or (at your option) any later version.
  17
  18    This program is distributed in the hope that it will be useful, but
  19    WITHOUT ANY WARRANTY; without even the implied warranty of
  20    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  21    General Public License for more details.
  22
  23    You should have received a copy of the GNU General Public License
  24    along with this program; if not, write to the Free Software
  25    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  26    02111-1307, USA.
  27
  28    The GNU General Public License is contained in the file COPYING.
  29 */
  30
  31 #ifndef __PUB_CORE_DISPATCH_ASM_H
  32 #define __PUB_CORE_DISPATCH_ASM_H
  33
  34 /* Magic values that the guest state might be set to when returning to the
  35    dispatcher.  The only other legitimate value is to point to the
  36    start of the thread's VEX guest state.  These also are return values from
  37    from VG_(run_innerloop) to the scheduler.
  38 */
  39 /* Defines values for JMP_EMWARN, JMP_SYSCALL, JMP_CLIENTREQ and
  40    JMP_YIELD */
  41 #include "libvex_trc_values.h"
  42
  43 /* And some more of our own.  These must not have the same values as
  44    those from libvex_trc_values.h.  (viz, 60 or below is safe).
  45
  46    (The following comment is no longer relevant, but is retained
  47    for historical purposes.)
  48    These values *must* be odd (have bit 0 set) because the dispatchers
  49    (coregrind/m_dispatch/dispatch-*-*.S) use this fact to distinguish
  50    a TRC value from the unchanged baseblock pointer -- which has 0 as
  51    its lowest bit.
  52 */
  53 #define VG_TRC_BORING              29 /* no event; just keep going */
  54 #define VG_TRC_INNER_FASTMISS      37 /* TRC only; means fast-cache miss. */
  55 #define VG_TRC_INNER_COUNTERZERO   41 /* TRC only; means bb ctr == 0 */
  56 #define VG_TRC_FAULT_SIGNAL        43 /* TRC only; got sigsegv/sigbus */
  57 #define VG_TRC_INVARIANT_FAILED    47 /* TRC only; invariant violation */
  58 #define VG_TRC_CHAIN_ME_TO_SLOW_EP 49 /* TRC only; chain to slow EP */
  59 #define VG_TRC_CHAIN_ME_TO_FAST_EP 51 /* TRC only; chain to fast EP */
  60
  61 #endif   // __PUB_CORE_DISPATCH_ASM_H
  62
  63 /*--------------------------------------------------------------------*/
  64 /*--- end                                                          ---*/
  65 /*--------------------------------------------------------------------*/