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/*--- The dispatcher. pub_core_dispatch.h ---*/
This file is part of Valgrind, a dynamic binary instrumentation
Copyright (C) 2000-2013 Julian Seward
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307, USA.
The GNU General Public License is contained in the file COPYING.
// PURPOSE: This module contains the inner loop of the execution
// mechanism, which is: find next basic block, execute it, repeat until
// the next bb isn't found in the fast-cache; or if the current bb
// exited with a request for some special action before continuing; or
// if the current thread has used up its scheduling quantum.
#include "pub_core_dispatch_asm.h"
#include "pub_core_basics.h" // Addr
/* Run translations, with the given guest state, and starting by
running the host code at 'host_addr'. It is almost always the case
that host_addr is the translation for guest_state.guest_IP, that
is, host_addr is what it would be if we looked up the address of
the translation corresponding to guest_state.guest_IP.
The only case where this isn't true is where we're running a
no-redir translation. In this case host_addr is the address of the
alternative (non-redirected) translation for guest_state.guest_IP.
The return value must indicate why it returned back to the scheduler.
It can also be exited if the executing code throws a non-resumable
signal, for example SIGSEGV, in which case control longjmp()s back past
two_words holds the return values (two words). First is
a TRC value. Second is generally unused, except in the case
where we have to return a chain-me request.
void VG_(disp_run_translations)( HWord* two_words,
volatile void* guest_state,
Addr host_addr );
/* We need to know addresses of the continuation-point (cp_) labels so
we can tell VEX what they are. They will get baked into the code
VEX generates. The type is entirely mythical, but we need to
state _some_ type, so as to keep gcc happy. */
void VG_(disp_cp_chain_me_to_slowEP)(void);
void VG_(disp_cp_chain_me_to_fastEP)(void);
void VG_(disp_cp_xindir)(void);
void VG_(disp_cp_xassisted)(void);
void VG_(disp_cp_evcheck_fail)(void);
/*--- end ---*/