1999-04-16 03:35:26 +02:00
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# Generate the main loop of the simulator.
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2012-01-04 09:28:28 +01:00
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# Copyright (C) 1996-2000, 2007-2012 Free Software Foundation, Inc.
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1999-04-16 03:35:26 +02:00
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# Contributed by Cygnus Support.
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#
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# This file is part of the GNU simulators.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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2007-08-24 16:30:15 +02:00
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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1999-04-16 03:35:26 +02:00
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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2007-08-24 16:30:15 +02:00
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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1999-04-16 03:35:26 +02:00
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#
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# This file creates two files: eng.hin and mloop.cin.
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# eng.hin defines a few macros that specify what kind of engine was selected
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# based on the arguments to this script.
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# mloop.cin contains the engine.
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#
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# ??? Rename mloop.c to eng.c?
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# ??? Rename mainloop.in to engine.in?
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# ??? Add options to specify output file names?
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# ??? Rename this file to genengine.sh?
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#
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# Syntax: genmloop.sh [options]
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#
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# Options:
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#
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# -mono | -multi
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# - specify single cpu or multiple cpus (number specifyable at runtime),
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# maximum number is a configuration parameter
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# - -multi wip
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#
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# -fast: include support for fast execution in addition to full featured mode
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#
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# Full featured mode is for tracing, profiling, etc. and is always
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# provided. Fast mode contains no frills, except speed.
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# A target need only provide a "full" version of one of
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# simple,scache,pbb. If the target wants it can also provide a fast
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# version of same. It can't provide more than this.
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# ??? Later add ability to have another set of full/fast semantics
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# for use in with-devices/with-smp situations (pbb can be inappropriate
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# here).
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#
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# -full-switch: same as -fast but for full featured version of -switch
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# Only needed if -fast present.
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#
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# -simple: simple execution engine (the default)
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#
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# This engine fetches and executes one instruction at a time.
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# Field extraction is done in the semantic routines.
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#
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# ??? There are two possible flavours of -simple. One that extracts
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# fields in the semantic routine (which is what is implemented here),
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# and one that stores the extracted fields in ARGBUF before calling the
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# semantic routine. The latter is essentially the -scache case with a
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# cache size of one (and the scache lookup code removed). There are no
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# current uses of this and it's not clear when doing this would be a win.
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# More complicated ISA's that want to use -simple may find this a win.
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# Should this ever be desirable, implement a new engine style here and
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# call it -extract (or some such). It's believed that the CGEN-generated
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# code for the -scache case would be usable here, so no new code
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# generation option would be needed for CGEN.
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#
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# -scache: use the scache to speed things up (not always a win)
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#
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# This engine caches the extracted instruction before executing it.
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# When executing instructions they are first looked up in the scache.
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#
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# -pbb: same as -scache but extract a (pseudo-) basic block at a time
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#
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# This engine is basically identical to the scache version except that
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# extraction is done a pseudo-basic-block at a time and the address of
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# the scache entry of a branch target is recorded as well.
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# Additional speedups are then possible by defering Ctrl-C checking
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# to the end of basic blocks and by threading the insns together.
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# We call them pseudo-basic-block's instead of just basic-blocks because
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# they're not necessarily basic-blocks, though normally are.
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#
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# -parallel-read: support parallel execution with read-before-exec support.
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# -parallel-write: support parallel execution with write-after-exec support.
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1999-08-24 00:40:00 +02:00
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# -parallel-generic-write: support parallel execution with generic queued
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# writes.
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1999-04-16 03:35:26 +02:00
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#
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# One of these options is specified in addition to -simple, -scache,
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# -pbb. Note that while the code can determine if the cpu supports
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# parallel execution with HAVE_PARALLEL_INSNS [and thus this option is
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# technically unnecessary], having this option cuts down on the clutter
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# in the result.
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#
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1999-08-24 00:40:00 +02:00
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# -parallel-only: semantic code only supports parallel version of insn
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#
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# Semantic code only supports parallel versions of each insn.
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# Things can be sped up by generating both serial and parallel versions
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# and is better suited to mixed parallel architectures like the m32r.
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#
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2000-12-05 01:46:04 +01:00
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# -prefix: string to prepend to function names in mloop.c/eng.h.
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#
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# If no prefix is specified, the cpu type is used.
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#
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1999-04-16 03:35:26 +02:00
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# -switch file: specify file containing semantics implemented as a switch()
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#
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# -cpu <cpu-family>
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#
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# Specify the cpu family name.
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#
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# -infile <input-file>
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#
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# Specify the mainloop.in input file.
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#
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2000-12-05 01:46:04 +01:00
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# -outfile-suffix <output-file-suffix>
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#
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# Specify the suffix to append to output files.
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#
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2008-07-29 15:53:02 +02:00
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# -shell <shell>
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#
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# Specify the shell to use to execute <input-file>
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#
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1999-04-16 03:35:26 +02:00
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# Only one of -scache/-pbb may be selected.
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# -simple is the default.
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#
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####
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#
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# TODO
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# - build mainloop.in from .cpu file
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type=mono
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#scache=
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#fast=
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#full_switch=
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#pbb=
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parallel=no
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1999-08-24 00:40:00 +02:00
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parallel_only=no
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1999-04-16 03:35:26 +02:00
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switch=
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cpu="unknown"
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infile=""
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2000-12-05 01:46:04 +01:00
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prefix="unknown"
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outsuffix=""
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1999-04-16 03:35:26 +02:00
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while test $# -gt 0
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do
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case $1 in
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-mono) type=mono ;;
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-multi) type=multi ;;
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-no-fast) ;;
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-fast) fast=yes ;;
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-full-switch) full_switch=yes ;;
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-simple) ;;
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-scache) scache=yes ;;
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-pbb) pbb=yes ;;
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-no-parallel) ;;
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2000-12-05 01:46:04 +01:00
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-outfile-suffix) shift ; outsuffix=$1 ;;
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1999-04-16 03:35:26 +02:00
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-parallel-read) parallel=read ;;
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-parallel-write) parallel=write ;;
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1999-08-24 00:40:00 +02:00
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-parallel-generic-write) parallel=genwrite ;;
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-parallel-only) parallel_only=yes ;;
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2000-12-05 01:46:04 +01:00
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-prefix) shift ; prefix=$1 ;;
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1999-04-16 03:35:26 +02:00
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-switch) shift ; switch=$1 ;;
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-cpu) shift ; cpu=$1 ;;
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-infile) shift ; infile=$1 ;;
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2008-07-29 15:53:02 +02:00
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-shell) shift ; SHELL=$1 ;;
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1999-04-16 03:35:26 +02:00
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*) echo "unknown option: $1" >&2 ; exit 1 ;;
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esac
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shift
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done
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# Argument validation.
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if [ x$scache = xyes -a x$pbb = xyes ] ; then
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echo "only one of -scache and -pbb may be selected" >&2
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exit 1
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fi
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if [ "x$cpu" = xunknown ] ; then
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echo "cpu family not specified" >&2
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exit 1
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fi
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if [ "x$infile" = x ] ; then
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echo "mainloop.in not specified" >&2
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exit 1
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fi
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2000-12-05 01:46:04 +01:00
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if [ "x$prefix" = xunknown ] ; then
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prefix=$cpu
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fi
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1999-04-16 03:35:26 +02:00
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lowercase='abcdefghijklmnopqrstuvwxyz'
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uppercase='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
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CPU=`echo ${cpu} | tr "${lowercase}" "${uppercase}"`
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2000-12-05 01:46:04 +01:00
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PREFIX=`echo ${prefix} | tr "${lowercase}" "${uppercase}"`
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1999-04-16 03:35:26 +02:00
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##########################################################################
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2000-12-05 01:46:04 +01:00
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rm -f eng${outsuffix}.hin
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exec 1>eng${outsuffix}.hin
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1999-04-16 03:35:26 +02:00
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echo "/* engine configuration for ${cpu} */"
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echo ""
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echo "/* WITH_FAST: non-zero if a fast version of the engine is available"
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echo " in addition to the full-featured version. */"
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if [ x$fast = xyes ] ; then
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echo "#define WITH_FAST 1"
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else
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echo "#define WITH_FAST 0"
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fi
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echo ""
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2000-12-05 01:46:04 +01:00
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echo "/* WITH_SCACHE_PBB_${PREFIX}: non-zero if the pbb engine was selected. */"
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1999-04-16 03:35:26 +02:00
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if [ x$pbb = xyes ] ; then
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2000-12-05 01:46:04 +01:00
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echo "#define WITH_SCACHE_PBB_${PREFIX} 1"
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1999-04-16 03:35:26 +02:00
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else
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2000-12-05 01:46:04 +01:00
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echo "#define WITH_SCACHE_PBB_${PREFIX} 0"
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1999-04-16 03:35:26 +02:00
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fi
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echo ""
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echo "/* HAVE_PARALLEL_INSNS: non-zero if cpu can parallelly execute > 1 insn. */"
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1999-08-24 00:40:00 +02:00
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# blah blah blah, other ways to do this, blah blah blah
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case x$parallel in
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xno)
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echo "#define HAVE_PARALLEL_INSNS 0"
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echo "#define WITH_PARALLEL_READ 0"
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echo "#define WITH_PARALLEL_WRITE 0"
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echo "#define WITH_PARALLEL_GENWRITE 0"
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;;
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xread)
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echo "#define HAVE_PARALLEL_INSNS 1"
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echo "/* Parallel execution is supported by read-before-exec. */"
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echo "#define WITH_PARALLEL_READ 1"
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echo "#define WITH_PARALLEL_WRITE 0"
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echo "#define WITH_PARALLEL_GENWRITE 0"
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;;
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xwrite)
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echo "#define HAVE_PARALLEL_INSNS 1"
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echo "/* Parallel execution is supported by write-after-exec. */"
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echo "#define WITH_PARALLEL_READ 0"
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echo "#define WITH_PARALLEL_WRITE 1"
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echo "#define WITH_PARALLEL_GENWRITE 0"
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;;
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xgenwrite)
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echo "#define HAVE_PARALLEL_INSNS 1"
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echo "/* Parallel execution is supported by generic write-after-exec. */"
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echo "#define WITH_PARALLEL_READ 0"
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echo "#define WITH_PARALLEL_WRITE 0"
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echo "#define WITH_PARALLEL_GENWRITE 1"
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;;
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esac
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1999-04-16 03:35:26 +02:00
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if [ "x$switch" != x ] ; then
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echo ""
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echo "/* WITH_SEM_SWITCH_FULL: non-zero if full-featured engine is"
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echo " implemented as a switch(). */"
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if [ x$fast != xyes -o x$full_switch = xyes ] ; then
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echo "#define WITH_SEM_SWITCH_FULL 1"
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else
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echo "#define WITH_SEM_SWITCH_FULL 0"
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fi
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echo ""
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echo "/* WITH_SEM_SWITCH_FAST: non-zero if fast engine is"
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echo " implemented as a switch(). */"
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if [ x$fast = xyes ] ; then
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echo "#define WITH_SEM_SWITCH_FAST 1"
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else
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echo "#define WITH_SEM_SWITCH_FAST 0"
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fi
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fi
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# Decls of functions we define.
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echo ""
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echo "/* Functions defined in the generated mainloop.c file"
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echo " (which doesn't necessarily have that file name). */"
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echo ""
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2000-12-05 01:46:04 +01:00
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echo "extern ENGINE_FN ${prefix}_engine_run_full;"
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echo "extern ENGINE_FN ${prefix}_engine_run_fast;"
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1999-04-16 03:35:26 +02:00
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if [ x$pbb = xyes ] ; then
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echo ""
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2000-12-05 01:46:04 +01:00
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echo "extern SEM_PC ${prefix}_pbb_begin (SIM_CPU *, int);"
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echo "extern SEM_PC ${prefix}_pbb_chain (SIM_CPU *, SEM_ARG);"
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echo "extern SEM_PC ${prefix}_pbb_cti_chain (SIM_CPU *, SEM_ARG, SEM_BRANCH_TYPE, PCADDR);"
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echo "extern void ${prefix}_pbb_before (SIM_CPU *, SCACHE *);"
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echo "extern void ${prefix}_pbb_after (SIM_CPU *, SCACHE *);"
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1999-04-16 03:35:26 +02:00
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fi
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##########################################################################
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2000-12-05 01:46:04 +01:00
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rm -f tmp-mloop-$$.cin mloop${outsuffix}.cin
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exec 1>tmp-mloop-$$.cin
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1999-04-16 03:35:26 +02:00
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# We use @cpu@ instead of ${cpu} because we still need to run sed to handle
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# transformation of @cpu@ for mainloop.in, so there's no need to use ${cpu}
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# here.
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cat << EOF
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/* This file is generated by the genmloop script. DO NOT EDIT! */
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/* Enable switch() support in cgen headers. */
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#define SEM_IN_SWITCH
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#define WANT_CPU @cpu@
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#define WANT_CPU_@CPU@
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#include "sim-main.h"
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#include "bfd.h"
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#include "cgen-mem.h"
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#include "cgen-ops.h"
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#include "sim-assert.h"
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/* Fill in the administrative ARGBUF fields required by all insns,
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virtual and real. */
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static INLINE void
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2000-12-05 01:46:04 +01:00
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@prefix@_fill_argbuf (const SIM_CPU *cpu, ARGBUF *abuf, const IDESC *idesc,
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1999-04-16 03:35:26 +02:00
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|
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PCADDR pc, int fast_p)
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{
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#if WITH_SCACHE
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SEM_SET_CODE (abuf, idesc, fast_p);
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ARGBUF_ADDR (abuf) = pc;
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#endif
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ARGBUF_IDESC (abuf) = idesc;
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}
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|
|
|
|
|
/* Fill in tracing/profiling fields of an ARGBUF. */
|
|
|
|
|
|
|
|
static INLINE void
|
2000-12-05 01:46:04 +01:00
|
|
|
@prefix@_fill_argbuf_tp (const SIM_CPU *cpu, ARGBUF *abuf,
|
1999-04-16 03:35:26 +02:00
|
|
|
int trace_p, int profile_p)
|
|
|
|
{
|
|
|
|
ARGBUF_TRACE_P (abuf) = trace_p;
|
|
|
|
ARGBUF_PROFILE_P (abuf) = profile_p;
|
|
|
|
}
|
|
|
|
|
|
|
|
#if WITH_SCACHE_PBB
|
|
|
|
|
|
|
|
/* Emit the "x-before" handler.
|
|
|
|
x-before is emitted before each insn (serial or parallel).
|
|
|
|
This is as opposed to x-after which is only emitted at the end of a group
|
|
|
|
of parallel insns. */
|
|
|
|
|
|
|
|
static INLINE void
|
2000-12-05 01:46:04 +01:00
|
|
|
@prefix@_emit_before (SIM_CPU *current_cpu, SCACHE *sc, PCADDR pc, int first_p)
|
1999-04-16 03:35:26 +02:00
|
|
|
{
|
|
|
|
ARGBUF *abuf = &sc[0].argbuf;
|
2000-12-05 01:46:04 +01:00
|
|
|
const IDESC *id = & CPU_IDESC (current_cpu) [@PREFIX@_INSN_X_BEFORE];
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
abuf->fields.before.first_p = first_p;
|
2000-12-05 01:46:04 +01:00
|
|
|
@prefix@_fill_argbuf (current_cpu, abuf, id, pc, 0);
|
1999-04-16 03:35:26 +02:00
|
|
|
/* no need to set trace_p,profile_p */
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Emit the "x-after" handler.
|
|
|
|
x-after is emitted after a serial insn or at the end of a group of
|
|
|
|
parallel insns. */
|
|
|
|
|
|
|
|
static INLINE void
|
2000-12-05 01:46:04 +01:00
|
|
|
@prefix@_emit_after (SIM_CPU *current_cpu, SCACHE *sc, PCADDR pc)
|
1999-04-16 03:35:26 +02:00
|
|
|
{
|
|
|
|
ARGBUF *abuf = &sc[0].argbuf;
|
2000-12-05 01:46:04 +01:00
|
|
|
const IDESC *id = & CPU_IDESC (current_cpu) [@PREFIX@_INSN_X_AFTER];
|
1999-04-16 03:35:26 +02:00
|
|
|
|
2000-12-05 01:46:04 +01:00
|
|
|
@prefix@_fill_argbuf (current_cpu, abuf, id, pc, 0);
|
1999-04-16 03:35:26 +02:00
|
|
|
/* no need to set trace_p,profile_p */
|
|
|
|
}
|
|
|
|
|
|
|
|
#endif /* WITH_SCACHE_PBB */
|
|
|
|
|
|
|
|
EOF
|
|
|
|
|
|
|
|
${SHELL} $infile support
|
|
|
|
|
|
|
|
##########################################################################
|
|
|
|
|
|
|
|
# Simple engine: fetch an instruction, execute the instruction.
|
|
|
|
#
|
|
|
|
# Instruction fields are not extracted into ARGBUF, they are extracted in
|
|
|
|
# the semantic routines themselves. However, there is still a need to pass
|
|
|
|
# and return misc. information to the semantic routines so we still use ARGBUF.
|
|
|
|
# [One could certainly implement things differently and remove ARGBUF.
|
|
|
|
# It's not clear this is necessarily always a win.]
|
|
|
|
# ??? The use of the SCACHE struct is for consistency with the with-scache
|
|
|
|
# case though it might be a source of confusion.
|
|
|
|
|
|
|
|
if [ x$scache != xyes -a x$pbb != xyes ] ; then
|
|
|
|
|
|
|
|
cat << EOF
|
|
|
|
|
|
|
|
#define FAST_P 0
|
|
|
|
|
|
|
|
void
|
2000-12-05 01:46:04 +01:00
|
|
|
@prefix@_engine_run_full (SIM_CPU *current_cpu)
|
1999-04-16 03:35:26 +02:00
|
|
|
{
|
|
|
|
#define FAST_P 0
|
|
|
|
SIM_DESC current_state = CPU_STATE (current_cpu);
|
|
|
|
/* ??? Use of SCACHE is a bit of a hack as we don't actually use the scache.
|
|
|
|
We do however use ARGBUF so for consistency with the other engine flavours
|
|
|
|
the SCACHE type is used. */
|
|
|
|
SCACHE cache[MAX_LIW_INSNS];
|
|
|
|
SCACHE *sc = &cache[0];
|
|
|
|
|
|
|
|
EOF
|
|
|
|
|
1999-08-24 00:40:00 +02:00
|
|
|
case x$parallel in
|
|
|
|
xread | xwrite)
|
|
|
|
cat << EOF
|
1999-04-16 03:35:26 +02:00
|
|
|
PAREXEC pbufs[MAX_PARALLEL_INSNS];
|
|
|
|
PAREXEC *par_exec;
|
|
|
|
|
|
|
|
EOF
|
1999-08-24 00:40:00 +02:00
|
|
|
;;
|
|
|
|
esac
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
# Any initialization code before looping starts.
|
|
|
|
# Note that this code may declare some locals.
|
|
|
|
${SHELL} $infile init
|
|
|
|
|
1999-08-09 23:36:23 +02:00
|
|
|
if [ x$parallel = xread ] ; then
|
1999-04-16 03:35:26 +02:00
|
|
|
cat << EOF
|
|
|
|
|
1999-08-09 23:36:23 +02:00
|
|
|
#if defined (__GNUC__)
|
1999-04-16 03:35:26 +02:00
|
|
|
{
|
|
|
|
if (! CPU_IDESC_READ_INIT_P (current_cpu))
|
|
|
|
{
|
|
|
|
/* ??? Later maybe paste read.c in when building mainloop.c. */
|
|
|
|
#define DEFINE_LABELS
|
|
|
|
#include "readx.c"
|
|
|
|
CPU_IDESC_READ_INIT_P (current_cpu) = 1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
EOF
|
|
|
|
fi
|
|
|
|
|
|
|
|
cat << EOF
|
|
|
|
|
1999-08-09 23:36:23 +02:00
|
|
|
if (! CPU_IDESC_SEM_INIT_P (current_cpu))
|
|
|
|
{
|
|
|
|
#if WITH_SEM_SWITCH_FULL
|
|
|
|
#if defined (__GNUC__)
|
1999-04-16 03:35:26 +02:00
|
|
|
/* ??? Later maybe paste sem-switch.c in when building mainloop.c. */
|
|
|
|
#define DEFINE_LABELS
|
|
|
|
#include "$switch"
|
|
|
|
#endif
|
1999-08-09 23:36:23 +02:00
|
|
|
#else
|
2000-12-05 01:46:04 +01:00
|
|
|
@prefix@_sem_init_idesc_table (current_cpu);
|
1999-08-09 23:36:23 +02:00
|
|
|
#endif
|
|
|
|
CPU_IDESC_SEM_INIT_P (current_cpu) = 1;
|
|
|
|
}
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
do
|
|
|
|
{
|
|
|
|
/* begin full-exec-simple */
|
|
|
|
EOF
|
|
|
|
|
|
|
|
${SHELL} $infile full-exec-simple
|
|
|
|
|
|
|
|
cat << EOF
|
|
|
|
/* end full-exec-simple */
|
|
|
|
|
|
|
|
++ CPU_INSN_COUNT (current_cpu);
|
|
|
|
}
|
|
|
|
while (0 /*CPU_RUNNING_P (current_cpu)*/);
|
|
|
|
}
|
|
|
|
|
|
|
|
#undef FAST_P
|
|
|
|
|
|
|
|
EOF
|
|
|
|
|
|
|
|
####################################
|
|
|
|
|
|
|
|
# Simple engine: fast version.
|
|
|
|
# ??? A somewhat dubious effort, but for completeness' sake.
|
|
|
|
|
|
|
|
if [ x$fast = xyes ] ; then
|
|
|
|
|
|
|
|
cat << EOF
|
|
|
|
|
|
|
|
#define FAST_P 1
|
|
|
|
|
|
|
|
FIXME: "fast simple version unimplemented, delete -fast arg to genmloop.sh."
|
|
|
|
|
|
|
|
#undef FAST_P
|
|
|
|
|
|
|
|
EOF
|
|
|
|
|
|
|
|
fi # -fast
|
|
|
|
|
|
|
|
fi # simple engine
|
|
|
|
|
|
|
|
##########################################################################
|
|
|
|
|
1999-08-09 23:36:23 +02:00
|
|
|
# Non-parallel scache engine: lookup insn in scache, fetch if missing,
|
|
|
|
# then execute it.
|
1999-04-16 03:35:26 +02:00
|
|
|
|
1999-08-09 23:36:23 +02:00
|
|
|
if [ x$scache = xyes -a x$parallel = xno ] ; then
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
cat << EOF
|
|
|
|
|
|
|
|
static INLINE SCACHE *
|
2000-12-05 01:46:04 +01:00
|
|
|
@prefix@_scache_lookup (SIM_CPU *current_cpu, PCADDR vpc, SCACHE *scache,
|
1999-04-16 03:35:26 +02:00
|
|
|
unsigned int hash_mask, int FAST_P)
|
|
|
|
{
|
|
|
|
/* First step: look up current insn in hash table. */
|
|
|
|
SCACHE *sc = scache + SCACHE_HASH_PC (vpc, hash_mask);
|
|
|
|
|
|
|
|
/* If the entry isn't the one we want (cache miss),
|
|
|
|
fetch and decode the instruction. */
|
|
|
|
if (sc->argbuf.addr != vpc)
|
|
|
|
{
|
1999-08-09 23:36:23 +02:00
|
|
|
if (! FAST_P)
|
1999-04-16 03:35:26 +02:00
|
|
|
PROFILE_COUNT_SCACHE_MISS (current_cpu);
|
|
|
|
|
|
|
|
/* begin extract-scache */
|
|
|
|
EOF
|
|
|
|
|
|
|
|
${SHELL} $infile extract-scache
|
|
|
|
|
|
|
|
cat << EOF
|
|
|
|
/* end extract-scache */
|
|
|
|
}
|
1999-08-09 23:36:23 +02:00
|
|
|
else if (! FAST_P)
|
1999-04-16 03:35:26 +02:00
|
|
|
{
|
|
|
|
PROFILE_COUNT_SCACHE_HIT (current_cpu);
|
|
|
|
/* Make core access statistics come out right.
|
|
|
|
The size is a guess, but it's currently not used either. */
|
|
|
|
PROFILE_COUNT_CORE (current_cpu, vpc, 2, exec_map);
|
|
|
|
}
|
|
|
|
|
|
|
|
return sc;
|
|
|
|
}
|
|
|
|
|
|
|
|
#define FAST_P 0
|
|
|
|
|
|
|
|
void
|
2000-12-05 01:46:04 +01:00
|
|
|
@prefix@_engine_run_full (SIM_CPU *current_cpu)
|
1999-04-16 03:35:26 +02:00
|
|
|
{
|
|
|
|
SIM_DESC current_state = CPU_STATE (current_cpu);
|
|
|
|
SCACHE *scache = CPU_SCACHE_CACHE (current_cpu);
|
|
|
|
unsigned int hash_mask = CPU_SCACHE_HASH_MASK (current_cpu);
|
|
|
|
SEM_PC vpc;
|
|
|
|
|
|
|
|
EOF
|
|
|
|
|
1999-08-09 23:36:23 +02:00
|
|
|
# Any initialization code before looping starts.
|
|
|
|
# Note that this code may declare some locals.
|
|
|
|
${SHELL} $infile init
|
|
|
|
|
|
|
|
cat << EOF
|
|
|
|
|
|
|
|
if (! CPU_IDESC_SEM_INIT_P (current_cpu))
|
|
|
|
{
|
|
|
|
#if ! WITH_SEM_SWITCH_FULL
|
2000-12-05 01:46:04 +01:00
|
|
|
@prefix@_sem_init_idesc_table (current_cpu);
|
1999-08-09 23:36:23 +02:00
|
|
|
#endif
|
|
|
|
CPU_IDESC_SEM_INIT_P (current_cpu) = 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
vpc = GET_H_PC ();
|
|
|
|
|
|
|
|
do
|
|
|
|
{
|
|
|
|
SCACHE *sc;
|
|
|
|
|
2000-12-05 01:46:04 +01:00
|
|
|
sc = @prefix@_scache_lookup (current_cpu, vpc, scache, hash_mask, FAST_P);
|
1999-08-09 23:36:23 +02:00
|
|
|
|
|
|
|
/* begin full-exec-scache */
|
|
|
|
EOF
|
|
|
|
|
|
|
|
${SHELL} $infile full-exec-scache
|
|
|
|
|
|
|
|
cat << EOF
|
|
|
|
/* end full-exec-scache */
|
|
|
|
|
|
|
|
SET_H_PC (vpc);
|
|
|
|
|
|
|
|
++ CPU_INSN_COUNT (current_cpu);
|
|
|
|
}
|
|
|
|
while (0 /*CPU_RUNNING_P (current_cpu)*/);
|
|
|
|
}
|
|
|
|
|
|
|
|
#undef FAST_P
|
|
|
|
|
|
|
|
EOF
|
|
|
|
|
|
|
|
####################################
|
|
|
|
|
|
|
|
# Non-parallel scache engine: fast version.
|
|
|
|
|
|
|
|
if [ x$fast = xyes ] ; then
|
|
|
|
|
|
|
|
cat << EOF
|
|
|
|
|
|
|
|
#define FAST_P 1
|
|
|
|
|
|
|
|
void
|
2000-12-05 01:46:04 +01:00
|
|
|
@prefix@_engine_run_fast (SIM_CPU *current_cpu)
|
1999-08-09 23:36:23 +02:00
|
|
|
{
|
|
|
|
SIM_DESC current_state = CPU_STATE (current_cpu);
|
|
|
|
SCACHE *scache = CPU_SCACHE_CACHE (current_cpu);
|
|
|
|
unsigned int hash_mask = CPU_SCACHE_HASH_MASK (current_cpu);
|
|
|
|
SEM_PC vpc;
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
EOF
|
|
|
|
|
|
|
|
# Any initialization code before looping starts.
|
|
|
|
# Note that this code may declare some locals.
|
|
|
|
${SHELL} $infile init
|
|
|
|
|
1999-08-09 23:36:23 +02:00
|
|
|
cat << EOF
|
1999-04-16 03:35:26 +02:00
|
|
|
|
1999-08-09 23:36:23 +02:00
|
|
|
if (! CPU_IDESC_SEM_INIT_P (current_cpu))
|
|
|
|
{
|
|
|
|
#if WITH_SEM_SWITCH_FAST
|
|
|
|
#if defined (__GNUC__)
|
|
|
|
/* ??? Later maybe paste sem-switch.c in when building mainloop.c. */
|
|
|
|
#define DEFINE_LABELS
|
|
|
|
#include "$switch"
|
|
|
|
#endif
|
|
|
|
#else
|
2000-12-05 01:46:04 +01:00
|
|
|
@prefix@_semf_init_idesc_table (current_cpu);
|
1999-08-09 23:36:23 +02:00
|
|
|
#endif
|
|
|
|
CPU_IDESC_SEM_INIT_P (current_cpu) = 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
vpc = GET_H_PC ();
|
|
|
|
|
|
|
|
do
|
|
|
|
{
|
|
|
|
SCACHE *sc;
|
|
|
|
|
2000-12-05 01:46:04 +01:00
|
|
|
sc = @prefix@_scache_lookup (current_cpu, vpc, scache, hash_mask, FAST_P);
|
1999-08-09 23:36:23 +02:00
|
|
|
|
|
|
|
/* begin fast-exec-scache */
|
|
|
|
EOF
|
|
|
|
|
|
|
|
${SHELL} $infile fast-exec-scache
|
|
|
|
|
|
|
|
cat << EOF
|
|
|
|
/* end fast-exec-scache */
|
|
|
|
|
|
|
|
SET_H_PC (vpc);
|
|
|
|
|
|
|
|
++ CPU_INSN_COUNT (current_cpu);
|
|
|
|
}
|
|
|
|
while (0 /*CPU_RUNNING_P (current_cpu)*/);
|
|
|
|
}
|
|
|
|
|
|
|
|
#undef FAST_P
|
|
|
|
|
|
|
|
EOF
|
|
|
|
|
|
|
|
fi # -fast
|
|
|
|
|
|
|
|
fi # -scache && ! parallel
|
|
|
|
|
|
|
|
##########################################################################
|
|
|
|
|
|
|
|
# Parallel scache engine: lookup insn in scache, fetch if missing,
|
|
|
|
# then execute it.
|
|
|
|
# For the parallel case we give the target more flexibility.
|
|
|
|
|
|
|
|
if [ x$scache = xyes -a x$parallel != xno ] ; then
|
|
|
|
|
|
|
|
cat << EOF
|
|
|
|
|
|
|
|
static INLINE SCACHE *
|
2000-12-05 01:46:04 +01:00
|
|
|
@prefix@_scache_lookup (SIM_CPU *current_cpu, PCADDR vpc, SCACHE *scache,
|
1999-09-28 23:55:21 +02:00
|
|
|
unsigned int hash_mask, int FAST_P)
|
1999-08-09 23:36:23 +02:00
|
|
|
{
|
|
|
|
/* First step: look up current insn in hash table. */
|
|
|
|
SCACHE *sc = scache + SCACHE_HASH_PC (vpc, hash_mask);
|
|
|
|
|
|
|
|
/* If the entry isn't the one we want (cache miss),
|
|
|
|
fetch and decode the instruction. */
|
|
|
|
if (sc->argbuf.addr != vpc)
|
|
|
|
{
|
|
|
|
if (! FAST_P)
|
|
|
|
PROFILE_COUNT_SCACHE_MISS (current_cpu);
|
|
|
|
|
1999-09-28 23:55:21 +02:00
|
|
|
#define SET_LAST_INSN_P(last_p) do { sc->last_insn_p = (last_p); } while (0)
|
1999-08-09 23:36:23 +02:00
|
|
|
/* begin extract-scache */
|
|
|
|
EOF
|
|
|
|
|
|
|
|
${SHELL} $infile extract-scache
|
|
|
|
|
|
|
|
cat << EOF
|
|
|
|
/* end extract-scache */
|
|
|
|
#undef SET_LAST_INSN_P
|
|
|
|
}
|
|
|
|
else if (! FAST_P)
|
|
|
|
{
|
|
|
|
PROFILE_COUNT_SCACHE_HIT (current_cpu);
|
|
|
|
/* Make core access statistics come out right.
|
|
|
|
The size is a guess, but it's currently not used either. */
|
|
|
|
PROFILE_COUNT_CORE (current_cpu, vpc, 2, exec_map);
|
|
|
|
}
|
|
|
|
|
|
|
|
return sc;
|
|
|
|
}
|
|
|
|
|
|
|
|
#define FAST_P 0
|
|
|
|
|
|
|
|
void
|
2000-12-05 01:46:04 +01:00
|
|
|
@prefix@_engine_run_full (SIM_CPU *current_cpu)
|
1999-08-09 23:36:23 +02:00
|
|
|
{
|
|
|
|
SIM_DESC current_state = CPU_STATE (current_cpu);
|
|
|
|
SCACHE *scache = CPU_SCACHE_CACHE (current_cpu);
|
|
|
|
unsigned int hash_mask = CPU_SCACHE_HASH_MASK (current_cpu);
|
|
|
|
SEM_PC vpc;
|
|
|
|
|
|
|
|
EOF
|
|
|
|
|
|
|
|
# Any initialization code before looping starts.
|
|
|
|
# Note that this code may declare some locals.
|
|
|
|
${SHELL} $infile init
|
|
|
|
|
|
|
|
if [ x$parallel = xread ] ; then
|
|
|
|
cat << EOF
|
|
|
|
#if defined (__GNUC__)
|
1999-04-16 03:35:26 +02:00
|
|
|
{
|
|
|
|
if (! CPU_IDESC_READ_INIT_P (current_cpu))
|
|
|
|
{
|
|
|
|
/* ??? Later maybe paste read.c in when building mainloop.c. */
|
|
|
|
#define DEFINE_LABELS
|
|
|
|
#include "readx.c"
|
|
|
|
CPU_IDESC_READ_INIT_P (current_cpu) = 1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
EOF
|
|
|
|
fi
|
|
|
|
|
|
|
|
cat << EOF
|
|
|
|
|
1999-08-09 23:36:23 +02:00
|
|
|
if (! CPU_IDESC_SEM_INIT_P (current_cpu))
|
|
|
|
{
|
|
|
|
#if ! WITH_SEM_SWITCH_FULL
|
2000-12-05 01:46:04 +01:00
|
|
|
@prefix@_sem_init_idesc_table (current_cpu);
|
1999-08-09 23:36:23 +02:00
|
|
|
#endif
|
|
|
|
CPU_IDESC_SEM_INIT_P (current_cpu) = 1;
|
|
|
|
}
|
|
|
|
|
1999-04-16 03:35:26 +02:00
|
|
|
vpc = GET_H_PC ();
|
|
|
|
|
|
|
|
do
|
|
|
|
{
|
|
|
|
/* begin full-exec-scache */
|
|
|
|
EOF
|
|
|
|
|
|
|
|
${SHELL} $infile full-exec-scache
|
|
|
|
|
|
|
|
cat << EOF
|
|
|
|
/* end full-exec-scache */
|
|
|
|
}
|
|
|
|
while (0 /*CPU_RUNNING_P (current_cpu)*/);
|
|
|
|
}
|
|
|
|
|
|
|
|
#undef FAST_P
|
|
|
|
|
|
|
|
EOF
|
|
|
|
|
|
|
|
####################################
|
|
|
|
|
1999-08-09 23:36:23 +02:00
|
|
|
# Parallel scache engine: fast version.
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
if [ x$fast = xyes ] ; then
|
|
|
|
|
|
|
|
cat << EOF
|
|
|
|
|
|
|
|
#define FAST_P 1
|
|
|
|
|
|
|
|
void
|
2000-12-05 01:46:04 +01:00
|
|
|
@prefix@_engine_run_fast (SIM_CPU *current_cpu)
|
1999-04-16 03:35:26 +02:00
|
|
|
{
|
|
|
|
SIM_DESC current_state = CPU_STATE (current_cpu);
|
|
|
|
SCACHE *scache = CPU_SCACHE_CACHE (current_cpu);
|
|
|
|
unsigned int hash_mask = CPU_SCACHE_HASH_MASK (current_cpu);
|
|
|
|
SEM_PC vpc;
|
|
|
|
PAREXEC pbufs[MAX_PARALLEL_INSNS];
|
|
|
|
PAREXEC *par_exec;
|
|
|
|
|
|
|
|
EOF
|
|
|
|
|
|
|
|
# Any initialization code before looping starts.
|
|
|
|
# Note that this code may declare some locals.
|
|
|
|
${SHELL} $infile init
|
|
|
|
|
1999-08-09 23:36:23 +02:00
|
|
|
if [ x$parallel = xread ] ; then
|
|
|
|
cat << EOF
|
1999-04-16 03:35:26 +02:00
|
|
|
|
1999-08-09 23:36:23 +02:00
|
|
|
#if defined (__GNUC__)
|
1999-04-16 03:35:26 +02:00
|
|
|
{
|
|
|
|
if (! CPU_IDESC_READ_INIT_P (current_cpu))
|
|
|
|
{
|
|
|
|
/* ??? Later maybe paste read.c in when building mainloop.c. */
|
|
|
|
#define DEFINE_LABELS
|
|
|
|
#include "readx.c"
|
|
|
|
CPU_IDESC_READ_INIT_P (current_cpu) = 1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
EOF
|
1999-08-09 23:36:23 +02:00
|
|
|
fi
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
cat << EOF
|
|
|
|
|
1999-08-09 23:36:23 +02:00
|
|
|
if (! CPU_IDESC_SEM_INIT_P (current_cpu))
|
|
|
|
{
|
|
|
|
#if WITH_SEM_SWITCH_FAST
|
|
|
|
#if defined (__GNUC__)
|
1999-04-16 03:35:26 +02:00
|
|
|
/* ??? Later maybe paste sem-switch.c in when building mainloop.c. */
|
|
|
|
#define DEFINE_LABELS
|
|
|
|
#include "$switch"
|
|
|
|
#endif
|
1999-08-09 23:36:23 +02:00
|
|
|
#else
|
2000-12-05 01:46:04 +01:00
|
|
|
@prefix@_semf_init_idesc_table (current_cpu);
|
1999-08-09 23:36:23 +02:00
|
|
|
#endif
|
|
|
|
CPU_IDESC_SEM_INIT_P (current_cpu) = 1;
|
|
|
|
}
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
vpc = GET_H_PC ();
|
|
|
|
|
|
|
|
do
|
|
|
|
{
|
|
|
|
/* begin fast-exec-scache */
|
|
|
|
EOF
|
|
|
|
|
|
|
|
${SHELL} $infile fast-exec-scache
|
|
|
|
|
|
|
|
cat << EOF
|
|
|
|
/* end fast-exec-scache */
|
|
|
|
}
|
|
|
|
while (0 /*CPU_RUNNING_P (current_cpu)*/);
|
|
|
|
}
|
|
|
|
|
|
|
|
#undef FAST_P
|
|
|
|
|
|
|
|
EOF
|
|
|
|
|
|
|
|
fi # -fast
|
|
|
|
|
1999-08-09 23:36:23 +02:00
|
|
|
fi # -scache && parallel
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
##########################################################################
|
|
|
|
|
|
|
|
# Compilation engine: lookup insn in scache, extract a pbb
|
|
|
|
# (pseudo-basic-block) if missing, then execute the pbb.
|
|
|
|
# A "pbb" is a sequence of insns up to the next cti insn or until
|
|
|
|
# some prespecified maximum.
|
|
|
|
# CTI: control transfer instruction.
|
|
|
|
|
|
|
|
if [ x$pbb = xyes ] ; then
|
|
|
|
|
|
|
|
cat << EOF
|
|
|
|
|
|
|
|
/* Record address of cti terminating a pbb. */
|
|
|
|
#define SET_CTI_VPC(sc) do { _cti_sc = (sc); } while (0)
|
|
|
|
/* Record number of [real] insns in pbb. */
|
|
|
|
#define SET_INSN_COUNT(n) do { _insn_count = (n); } while (0)
|
|
|
|
|
|
|
|
/* Fetch and extract a pseudo-basic-block.
|
|
|
|
FAST_P is non-zero if no tracing/profiling/etc. is wanted. */
|
|
|
|
|
|
|
|
INLINE SEM_PC
|
2000-12-05 01:46:04 +01:00
|
|
|
@prefix@_pbb_begin (SIM_CPU *current_cpu, int FAST_P)
|
1999-04-16 03:35:26 +02:00
|
|
|
{
|
|
|
|
SEM_PC new_vpc;
|
|
|
|
PCADDR pc;
|
|
|
|
SCACHE *sc;
|
|
|
|
int max_insns = CPU_SCACHE_MAX_CHAIN_LENGTH (current_cpu);
|
|
|
|
|
|
|
|
pc = GET_H_PC ();
|
|
|
|
|
|
|
|
new_vpc = scache_lookup_or_alloc (current_cpu, pc, max_insns, &sc);
|
|
|
|
if (! new_vpc)
|
|
|
|
{
|
|
|
|
/* Leading '_' to avoid collision with mainloop.in. */
|
|
|
|
int _insn_count = 0;
|
|
|
|
SCACHE *orig_sc = sc;
|
|
|
|
SCACHE *_cti_sc = NULL;
|
|
|
|
int slice_insns = CPU_MAX_SLICE_INSNS (current_cpu);
|
|
|
|
|
|
|
|
/* First figure out how many instructions to compile.
|
|
|
|
MAX_INSNS is the size of the allocated buffer, which includes space
|
|
|
|
for before/after handlers if they're being used.
|
|
|
|
SLICE_INSNS is the maxinum number of real insns that can be
|
|
|
|
executed. Zero means "as many as we want". */
|
|
|
|
/* ??? max_insns is serving two incompatible roles.
|
|
|
|
1) Number of slots available in scache buffer.
|
|
|
|
2) Number of real insns to execute.
|
|
|
|
They're incompatible because there are virtual insns emitted too
|
|
|
|
(chain,cti-chain,before,after handlers). */
|
|
|
|
|
|
|
|
if (slice_insns == 1)
|
|
|
|
{
|
|
|
|
/* No need to worry about extra slots required for virtual insns
|
|
|
|
and parallel exec support because MAX_CHAIN_LENGTH is
|
|
|
|
guaranteed to be big enough to execute at least 1 insn! */
|
|
|
|
max_insns = 1;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
/* Allow enough slop so that while compiling insns, if max_insns > 0
|
|
|
|
then there's guaranteed to be enough space to emit one real insn.
|
|
|
|
MAX_CHAIN_LENGTH is typically much longer than
|
|
|
|
the normal number of insns between cti's anyway. */
|
|
|
|
max_insns -= (1 /* one for the trailing chain insn */
|
|
|
|
+ (FAST_P
|
|
|
|
? 0
|
|
|
|
: (1 + MAX_PARALLEL_INSNS) /* before+after */)
|
|
|
|
+ (MAX_PARALLEL_INSNS > 1
|
|
|
|
? (MAX_PARALLEL_INSNS * 2)
|
|
|
|
: 0));
|
|
|
|
|
|
|
|
/* Account for before/after handlers. */
|
|
|
|
if (! FAST_P)
|
|
|
|
slice_insns *= 3;
|
|
|
|
|
|
|
|
if (slice_insns > 0
|
|
|
|
&& slice_insns < max_insns)
|
|
|
|
max_insns = slice_insns;
|
|
|
|
}
|
|
|
|
|
|
|
|
new_vpc = sc;
|
|
|
|
|
|
|
|
/* SC,PC must be updated to point passed the last entry used.
|
|
|
|
SET_CTI_VPC must be called if pbb is terminated by a cti.
|
|
|
|
SET_INSN_COUNT must be called to record number of real insns in
|
|
|
|
pbb [could be computed by us of course, extra cpu but perhaps
|
|
|
|
negligible enough]. */
|
|
|
|
|
|
|
|
/* begin extract-pbb */
|
|
|
|
EOF
|
|
|
|
|
|
|
|
${SHELL} $infile extract-pbb
|
|
|
|
|
|
|
|
cat << EOF
|
|
|
|
/* end extract-pbb */
|
|
|
|
|
|
|
|
/* The last one is a pseudo-insn to link to the next chain.
|
|
|
|
It is also used to record the insn count for this chain. */
|
|
|
|
{
|
|
|
|
const IDESC *id;
|
|
|
|
|
|
|
|
/* Was pbb terminated by a cti? */
|
|
|
|
if (_cti_sc)
|
|
|
|
{
|
2000-12-05 01:46:04 +01:00
|
|
|
id = & CPU_IDESC (current_cpu) [@PREFIX@_INSN_X_CTI_CHAIN];
|
1999-04-16 03:35:26 +02:00
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
2000-12-05 01:46:04 +01:00
|
|
|
id = & CPU_IDESC (current_cpu) [@PREFIX@_INSN_X_CHAIN];
|
1999-04-16 03:35:26 +02:00
|
|
|
}
|
|
|
|
SEM_SET_CODE (&sc->argbuf, id, FAST_P);
|
|
|
|
sc->argbuf.idesc = id;
|
|
|
|
sc->argbuf.addr = pc;
|
|
|
|
sc->argbuf.fields.chain.insn_count = _insn_count;
|
|
|
|
sc->argbuf.fields.chain.next = 0;
|
1999-08-09 23:36:23 +02:00
|
|
|
sc->argbuf.fields.chain.branch_target = 0;
|
1999-04-16 03:35:26 +02:00
|
|
|
++sc;
|
|
|
|
}
|
|
|
|
|
1999-06-28 18:06:02 +02:00
|
|
|
/* Update the pointer to the next free entry, may not have used as
|
|
|
|
many entries as was asked for. */
|
1999-04-16 03:35:26 +02:00
|
|
|
CPU_SCACHE_NEXT_FREE (current_cpu) = sc;
|
|
|
|
/* Record length of chain if profiling.
|
|
|
|
This includes virtual insns since they count against
|
|
|
|
max_insns too. */
|
|
|
|
if (! FAST_P)
|
|
|
|
PROFILE_COUNT_SCACHE_CHAIN_LENGTH (current_cpu, sc - orig_sc);
|
|
|
|
}
|
|
|
|
|
|
|
|
return new_vpc;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Chain to the next block from a non-cti terminated previous block. */
|
|
|
|
|
|
|
|
INLINE SEM_PC
|
2000-12-05 01:46:04 +01:00
|
|
|
@prefix@_pbb_chain (SIM_CPU *current_cpu, SEM_ARG sem_arg)
|
1999-04-16 03:35:26 +02:00
|
|
|
{
|
|
|
|
ARGBUF *abuf = SEM_ARGBUF (sem_arg);
|
|
|
|
|
|
|
|
PBB_UPDATE_INSN_COUNT (current_cpu, sem_arg);
|
|
|
|
|
|
|
|
SET_H_PC (abuf->addr);
|
|
|
|
|
|
|
|
/* If not running forever, exit back to main loop. */
|
|
|
|
if (CPU_MAX_SLICE_INSNS (current_cpu) != 0
|
|
|
|
/* Also exit back to main loop if there's an event.
|
|
|
|
Note that if CPU_MAX_SLICE_INSNS != 1, events won't get processed
|
|
|
|
at the "right" time, but then that was what was asked for.
|
|
|
|
There is no silver bullet for simulator engines.
|
|
|
|
??? Clearly this needs a cleaner interface.
|
|
|
|
At present it's just so Ctrl-C works. */
|
|
|
|
|| STATE_EVENTS (CPU_STATE (current_cpu))->work_pending)
|
|
|
|
CPU_RUNNING_P (current_cpu) = 0;
|
|
|
|
|
|
|
|
/* If chained to next block, go straight to it. */
|
|
|
|
if (abuf->fields.chain.next)
|
|
|
|
return abuf->fields.chain.next;
|
|
|
|
/* See if next block has already been compiled. */
|
|
|
|
abuf->fields.chain.next = scache_lookup (current_cpu, abuf->addr);
|
|
|
|
if (abuf->fields.chain.next)
|
|
|
|
return abuf->fields.chain.next;
|
|
|
|
/* Nope, so next insn is a virtual insn to invoke the compiler
|
|
|
|
(begin a pbb). */
|
|
|
|
return CPU_SCACHE_PBB_BEGIN (current_cpu);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Chain to the next block from a cti terminated previous block.
|
1999-08-09 23:36:23 +02:00
|
|
|
BR_TYPE indicates whether the branch was taken and whether we can cache
|
|
|
|
the vpc of the branch target.
|
1999-04-16 03:35:26 +02:00
|
|
|
NEW_PC is the target's branch address, and is only valid if
|
1999-08-09 23:36:23 +02:00
|
|
|
BR_TYPE != SEM_BRANCH_UNTAKEN. */
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
INLINE SEM_PC
|
2000-12-05 01:46:04 +01:00
|
|
|
@prefix@_pbb_cti_chain (SIM_CPU *current_cpu, SEM_ARG sem_arg,
|
1999-08-09 23:36:23 +02:00
|
|
|
SEM_BRANCH_TYPE br_type, PCADDR new_pc)
|
1999-04-16 03:35:26 +02:00
|
|
|
{
|
1999-08-09 23:36:23 +02:00
|
|
|
SEM_PC *new_vpc_ptr;
|
|
|
|
|
1999-04-16 03:35:26 +02:00
|
|
|
PBB_UPDATE_INSN_COUNT (current_cpu, sem_arg);
|
|
|
|
|
|
|
|
/* If not running forever, exit back to main loop. */
|
|
|
|
if (CPU_MAX_SLICE_INSNS (current_cpu) != 0
|
|
|
|
/* Also exit back to main loop if there's an event.
|
|
|
|
Note that if CPU_MAX_SLICE_INSNS != 1, events won't get processed
|
|
|
|
at the "right" time, but then that was what was asked for.
|
|
|
|
There is no silver bullet for simulator engines.
|
|
|
|
??? Clearly this needs a cleaner interface.
|
|
|
|
At present it's just so Ctrl-C works. */
|
|
|
|
|| STATE_EVENTS (CPU_STATE (current_cpu))->work_pending)
|
|
|
|
CPU_RUNNING_P (current_cpu) = 0;
|
|
|
|
|
|
|
|
/* Restart compiler if we branched to an uncacheable address
|
|
|
|
(e.g. "j reg"). */
|
1999-08-09 23:36:23 +02:00
|
|
|
if (br_type == SEM_BRANCH_UNCACHEABLE)
|
1999-04-16 03:35:26 +02:00
|
|
|
{
|
|
|
|
SET_H_PC (new_pc);
|
|
|
|
return CPU_SCACHE_PBB_BEGIN (current_cpu);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* If branch wasn't taken, update the pc and set BR_ADDR_PTR to our
|
|
|
|
next chain ptr. */
|
1999-08-09 23:36:23 +02:00
|
|
|
if (br_type == SEM_BRANCH_UNTAKEN)
|
1999-04-16 03:35:26 +02:00
|
|
|
{
|
1999-06-28 18:06:02 +02:00
|
|
|
ARGBUF *abuf = SEM_ARGBUF (sem_arg);
|
1999-08-09 23:36:23 +02:00
|
|
|
new_pc = abuf->addr;
|
|
|
|
SET_H_PC (new_pc);
|
1999-04-16 03:35:26 +02:00
|
|
|
new_vpc_ptr = &abuf->fields.chain.next;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
1999-08-09 23:36:23 +02:00
|
|
|
ARGBUF *abuf = SEM_ARGBUF (sem_arg);
|
1999-04-16 03:35:26 +02:00
|
|
|
SET_H_PC (new_pc);
|
1999-08-09 23:36:23 +02:00
|
|
|
new_vpc_ptr = &abuf->fields.chain.branch_target;
|
1999-04-16 03:35:26 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
/* If chained to next block, go straight to it. */
|
|
|
|
if (*new_vpc_ptr)
|
|
|
|
return *new_vpc_ptr;
|
|
|
|
/* See if next block has already been compiled. */
|
1999-08-09 23:36:23 +02:00
|
|
|
*new_vpc_ptr = scache_lookup (current_cpu, new_pc);
|
1999-04-16 03:35:26 +02:00
|
|
|
if (*new_vpc_ptr)
|
|
|
|
return *new_vpc_ptr;
|
|
|
|
/* Nope, so next insn is a virtual insn to invoke the compiler
|
|
|
|
(begin a pbb). */
|
|
|
|
return CPU_SCACHE_PBB_BEGIN (current_cpu);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* x-before handler.
|
|
|
|
This is called before each insn. */
|
|
|
|
|
|
|
|
void
|
2000-12-05 01:46:04 +01:00
|
|
|
@prefix@_pbb_before (SIM_CPU *current_cpu, SCACHE *sc)
|
1999-04-16 03:35:26 +02:00
|
|
|
{
|
|
|
|
SEM_ARG sem_arg = sc;
|
|
|
|
const ARGBUF *abuf = SEM_ARGBUF (sem_arg);
|
|
|
|
int first_p = abuf->fields.before.first_p;
|
|
|
|
const ARGBUF *cur_abuf = SEM_ARGBUF (sc + 1);
|
|
|
|
const IDESC *cur_idesc = cur_abuf->idesc;
|
|
|
|
PCADDR pc = cur_abuf->addr;
|
|
|
|
|
|
|
|
if (ARGBUF_PROFILE_P (cur_abuf))
|
|
|
|
PROFILE_COUNT_INSN (current_cpu, pc, cur_idesc->num);
|
|
|
|
|
|
|
|
/* If this isn't the first insn, finish up the previous one. */
|
|
|
|
|
|
|
|
if (! first_p)
|
|
|
|
{
|
|
|
|
if (PROFILE_MODEL_P (current_cpu))
|
|
|
|
{
|
|
|
|
const SEM_ARG prev_sem_arg = sc - 1;
|
|
|
|
const ARGBUF *prev_abuf = SEM_ARGBUF (prev_sem_arg);
|
|
|
|
const IDESC *prev_idesc = prev_abuf->idesc;
|
|
|
|
int cycles;
|
|
|
|
|
|
|
|
/* ??? May want to measure all insns if doing insn tracing. */
|
|
|
|
if (ARGBUF_PROFILE_P (prev_abuf))
|
|
|
|
{
|
|
|
|
cycles = (*prev_idesc->timing->model_fn) (current_cpu, prev_sem_arg);
|
2000-12-05 01:46:04 +01:00
|
|
|
@prefix@_model_insn_after (current_cpu, 0 /*last_p*/, cycles);
|
1999-04-16 03:35:26 +02:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
TRACE_INSN_FINI (current_cpu, cur_abuf, 0 /*last_p*/);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* FIXME: Later make cover macros: PROFILE_INSN_{INIT,FINI}. */
|
|
|
|
if (PROFILE_MODEL_P (current_cpu)
|
|
|
|
&& ARGBUF_PROFILE_P (cur_abuf))
|
2000-12-05 01:46:04 +01:00
|
|
|
@prefix@_model_insn_before (current_cpu, first_p);
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
TRACE_INSN_INIT (current_cpu, cur_abuf, first_p);
|
|
|
|
TRACE_INSN (current_cpu, cur_idesc->idata, cur_abuf, pc);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* x-after handler.
|
|
|
|
This is called after a serial insn or at the end of a group of parallel
|
|
|
|
insns. */
|
|
|
|
|
|
|
|
void
|
2000-12-05 01:46:04 +01:00
|
|
|
@prefix@_pbb_after (SIM_CPU *current_cpu, SCACHE *sc)
|
1999-04-16 03:35:26 +02:00
|
|
|
{
|
|
|
|
SEM_ARG sem_arg = sc;
|
|
|
|
const ARGBUF *abuf = SEM_ARGBUF (sem_arg);
|
|
|
|
const SEM_ARG prev_sem_arg = sc - 1;
|
|
|
|
const ARGBUF *prev_abuf = SEM_ARGBUF (prev_sem_arg);
|
|
|
|
|
|
|
|
/* ??? May want to measure all insns if doing insn tracing. */
|
|
|
|
if (PROFILE_MODEL_P (current_cpu)
|
|
|
|
&& ARGBUF_PROFILE_P (prev_abuf))
|
|
|
|
{
|
|
|
|
const IDESC *prev_idesc = prev_abuf->idesc;
|
|
|
|
int cycles;
|
|
|
|
|
|
|
|
cycles = (*prev_idesc->timing->model_fn) (current_cpu, prev_sem_arg);
|
2000-12-05 01:46:04 +01:00
|
|
|
@prefix@_model_insn_after (current_cpu, 1 /*last_p*/, cycles);
|
1999-04-16 03:35:26 +02:00
|
|
|
}
|
|
|
|
TRACE_INSN_FINI (current_cpu, prev_abuf, 1 /*last_p*/);
|
|
|
|
}
|
|
|
|
|
|
|
|
#define FAST_P 0
|
|
|
|
|
|
|
|
void
|
2000-12-05 01:46:04 +01:00
|
|
|
@prefix@_engine_run_full (SIM_CPU *current_cpu)
|
1999-04-16 03:35:26 +02:00
|
|
|
{
|
|
|
|
SIM_DESC current_state = CPU_STATE (current_cpu);
|
|
|
|
SCACHE *scache = CPU_SCACHE_CACHE (current_cpu);
|
|
|
|
/* virtual program counter */
|
|
|
|
SEM_PC vpc;
|
|
|
|
#if WITH_SEM_SWITCH_FULL
|
|
|
|
/* For communication between cti's and cti-chain. */
|
1999-08-09 23:36:23 +02:00
|
|
|
SEM_BRANCH_TYPE pbb_br_type;
|
1999-04-16 03:35:26 +02:00
|
|
|
PCADDR pbb_br_npc;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
EOF
|
|
|
|
|
1999-08-24 00:40:00 +02:00
|
|
|
case x$parallel in
|
|
|
|
xread | xwrite)
|
|
|
|
cat << EOF
|
1999-04-16 03:35:26 +02:00
|
|
|
PAREXEC pbufs[MAX_PARALLEL_INSNS];
|
|
|
|
PAREXEC *par_exec = &pbufs[0];
|
|
|
|
|
|
|
|
EOF
|
1999-08-24 00:40:00 +02:00
|
|
|
;;
|
|
|
|
esac
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
# Any initialization code before looping starts.
|
|
|
|
# Note that this code may declare some locals.
|
|
|
|
${SHELL} $infile init
|
|
|
|
|
|
|
|
cat << EOF
|
|
|
|
|
|
|
|
if (! CPU_IDESC_SEM_INIT_P (current_cpu))
|
|
|
|
{
|
|
|
|
/* ??? 'twould be nice to move this up a level and only call it once.
|
|
|
|
On the other hand, in the "let's go fast" case the test is only done
|
|
|
|
once per pbb (since we only return to the main loop at the end of
|
|
|
|
a pbb). And in the "let's run until we're done" case we don't return
|
|
|
|
until the program exits. */
|
|
|
|
|
1999-08-09 23:36:23 +02:00
|
|
|
#if WITH_SEM_SWITCH_FULL
|
|
|
|
#if defined (__GNUC__)
|
1999-04-16 03:35:26 +02:00
|
|
|
/* ??? Later maybe paste sem-switch.c in when building mainloop.c. */
|
|
|
|
#define DEFINE_LABELS
|
|
|
|
#include "$switch"
|
1999-08-09 23:36:23 +02:00
|
|
|
#endif
|
|
|
|
#else
|
2000-12-05 01:46:04 +01:00
|
|
|
@prefix@_sem_init_idesc_table (current_cpu);
|
1999-04-16 03:35:26 +02:00
|
|
|
#endif
|
|
|
|
|
|
|
|
/* Initialize the "begin (compile) a pbb" virtual insn. */
|
|
|
|
vpc = CPU_SCACHE_PBB_BEGIN (current_cpu);
|
|
|
|
SEM_SET_FULL_CODE (SEM_ARGBUF (vpc),
|
2000-12-05 01:46:04 +01:00
|
|
|
& CPU_IDESC (current_cpu) [@PREFIX@_INSN_X_BEGIN]);
|
|
|
|
vpc->argbuf.idesc = & CPU_IDESC (current_cpu) [@PREFIX@_INSN_X_BEGIN];
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
CPU_IDESC_SEM_INIT_P (current_cpu) = 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
CPU_RUNNING_P (current_cpu) = 1;
|
|
|
|
/* ??? In the case where we're returning to the main loop after every
|
|
|
|
pbb we don't want to call pbb_begin each time (which hashes on the pc
|
|
|
|
and does a table lookup). A way to speed this up is to save vpc
|
|
|
|
between calls. */
|
2000-12-05 01:46:04 +01:00
|
|
|
vpc = @prefix@_pbb_begin (current_cpu, FAST_P);
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
do
|
|
|
|
{
|
|
|
|
/* begin full-exec-pbb */
|
|
|
|
EOF
|
|
|
|
|
|
|
|
${SHELL} $infile full-exec-pbb
|
|
|
|
|
|
|
|
cat << EOF
|
|
|
|
/* end full-exec-pbb */
|
|
|
|
}
|
|
|
|
while (CPU_RUNNING_P (current_cpu));
|
|
|
|
}
|
|
|
|
|
|
|
|
#undef FAST_P
|
|
|
|
|
|
|
|
EOF
|
|
|
|
|
|
|
|
####################################
|
|
|
|
|
|
|
|
# Compile engine: fast version.
|
|
|
|
|
|
|
|
if [ x$fast = xyes ] ; then
|
|
|
|
|
|
|
|
cat << EOF
|
|
|
|
|
|
|
|
#define FAST_P 1
|
|
|
|
|
|
|
|
void
|
2000-12-05 01:46:04 +01:00
|
|
|
@prefix@_engine_run_fast (SIM_CPU *current_cpu)
|
1999-04-16 03:35:26 +02:00
|
|
|
{
|
|
|
|
SIM_DESC current_state = CPU_STATE (current_cpu);
|
|
|
|
SCACHE *scache = CPU_SCACHE_CACHE (current_cpu);
|
|
|
|
/* virtual program counter */
|
|
|
|
SEM_PC vpc;
|
|
|
|
#if WITH_SEM_SWITCH_FAST
|
|
|
|
/* For communication between cti's and cti-chain. */
|
1999-08-09 23:36:23 +02:00
|
|
|
SEM_BRANCH_TYPE pbb_br_type;
|
1999-04-16 03:35:26 +02:00
|
|
|
PCADDR pbb_br_npc;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
EOF
|
|
|
|
|
1999-08-24 00:40:00 +02:00
|
|
|
case x$parallel in
|
|
|
|
xread | xwrite)
|
|
|
|
cat << EOF
|
1999-04-16 03:35:26 +02:00
|
|
|
PAREXEC pbufs[MAX_PARALLEL_INSNS];
|
|
|
|
PAREXEC *par_exec = &pbufs[0];
|
|
|
|
|
|
|
|
EOF
|
1999-08-24 00:40:00 +02:00
|
|
|
;;
|
|
|
|
esac
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
# Any initialization code before looping starts.
|
|
|
|
# Note that this code may declare some locals.
|
|
|
|
${SHELL} $infile init
|
|
|
|
|
|
|
|
cat << EOF
|
|
|
|
|
|
|
|
if (! CPU_IDESC_SEM_INIT_P (current_cpu))
|
|
|
|
{
|
|
|
|
/* ??? 'twould be nice to move this up a level and only call it once.
|
|
|
|
On the other hand, in the "let's go fast" case the test is only done
|
|
|
|
once per pbb (since we only return to the main loop at the end of
|
|
|
|
a pbb). And in the "let's run until we're done" case we don't return
|
|
|
|
until the program exits. */
|
|
|
|
|
1999-08-09 23:36:23 +02:00
|
|
|
#if WITH_SEM_SWITCH_FAST
|
|
|
|
#if defined (__GNUC__)
|
1999-04-16 03:35:26 +02:00
|
|
|
/* ??? Later maybe paste sem-switch.c in when building mainloop.c. */
|
|
|
|
#define DEFINE_LABELS
|
|
|
|
#include "$switch"
|
|
|
|
#endif
|
1999-08-09 23:36:23 +02:00
|
|
|
#else
|
2000-12-05 01:46:04 +01:00
|
|
|
@prefix@_semf_init_idesc_table (current_cpu);
|
1999-08-09 23:36:23 +02:00
|
|
|
#endif
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
/* Initialize the "begin (compile) a pbb" virtual insn. */
|
|
|
|
vpc = CPU_SCACHE_PBB_BEGIN (current_cpu);
|
|
|
|
SEM_SET_FAST_CODE (SEM_ARGBUF (vpc),
|
2000-12-05 01:46:04 +01:00
|
|
|
& CPU_IDESC (current_cpu) [@PREFIX@_INSN_X_BEGIN]);
|
|
|
|
vpc->argbuf.idesc = & CPU_IDESC (current_cpu) [@PREFIX@_INSN_X_BEGIN];
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
CPU_IDESC_SEM_INIT_P (current_cpu) = 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
CPU_RUNNING_P (current_cpu) = 1;
|
|
|
|
/* ??? In the case where we're returning to the main loop after every
|
|
|
|
pbb we don't want to call pbb_begin each time (which hashes on the pc
|
|
|
|
and does a table lookup). A way to speed this up is to save vpc
|
|
|
|
between calls. */
|
2000-12-05 01:46:04 +01:00
|
|
|
vpc = @prefix@_pbb_begin (current_cpu, FAST_P);
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
do
|
|
|
|
{
|
|
|
|
/* begin fast-exec-pbb */
|
|
|
|
EOF
|
|
|
|
|
|
|
|
${SHELL} $infile fast-exec-pbb
|
|
|
|
|
|
|
|
cat << EOF
|
|
|
|
/* end fast-exec-pbb */
|
|
|
|
}
|
|
|
|
while (CPU_RUNNING_P (current_cpu));
|
|
|
|
}
|
|
|
|
|
|
|
|
#undef FAST_P
|
|
|
|
|
|
|
|
EOF
|
|
|
|
fi # -fast
|
|
|
|
|
|
|
|
fi # -pbb
|
|
|
|
|
2000-12-05 01:46:04 +01:00
|
|
|
# Expand @..@ macros appearing in tmp-mloop-{pid}.cin.
|
|
|
|
sed \
|
|
|
|
-e "s/@cpu@/$cpu/g" -e "s/@CPU@/$CPU/g" \
|
|
|
|
-e "s/@prefix@/$prefix/g" -e "s/@PREFIX@/$PREFIX/g" < tmp-mloop-$$.cin > mloop${outsuffix}.cin
|
1999-04-16 03:35:26 +02:00
|
|
|
rc=$?
|
2000-12-05 01:46:04 +01:00
|
|
|
rm -f tmp-mloop-$$.cin
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
exit $rc
|