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Diffstat (limited to 'lib/hipe/rtl/hipe_rtl_arith_32.erl')
| -rw-r--r-- | lib/hipe/rtl/hipe_rtl_arith_32.erl | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/lib/hipe/rtl/hipe_rtl_arith_32.erl b/lib/hipe/rtl/hipe_rtl_arith_32.erl new file mode 100644 index 0000000000..a8a6043cda --- /dev/null +++ b/lib/hipe/rtl/hipe_rtl_arith_32.erl @@ -0,0 +1,50 @@ +%% -*- erlang-indent-level: 2 -*- +%% +%% %CopyrightBegin% +%% +%% Copyright Ericsson AB 2003-2009. All Rights Reserved. +%% +%% The contents of this file are subject to the Erlang Public License, +%% Version 1.1, (the "License"); you may not use this file except in +%% compliance with the License. You should have received a copy of the +%% Erlang Public License along with this software. If not, it can be +%% retrieved online at http://www.erlang.org/. +%% +%% Software distributed under the License is distributed on an "AS IS" +%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See +%% the License for the specific language governing rights and limitations +%% under the License. +%% +%% %CopyrightEnd% +%% +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%% Copyright (c) 2002 by Erik Johansson. +%% ==================================================================== +%% Filename : hipe_rtl_arith_32.erl +%% Module : hipe_rtl_arith_32 +%% Purpose : To implement 32-bit RTL-arithmetic +%% Notes : The arithmetic works on 32-bit signed integers. +%% The implementation is taken from the implementation +%% of arithmetic on SPARC. +%% XXX: This code is seldom used, and hence also +%% seldom tested. +%% Look here for strange bugs appearing when +%% turning on rtl_prop. +%% +%% History : * 2002-10-23 Erik Stenman ([email protected]): Created. +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + +-module(hipe_rtl_arith_32). + +-export([eval_alu/3, eval_alub/4, eval_cond/3, eval_cond_bits/5]). + +-define(BITS, 32). +-define(SIGN_BIT, 31). +-define(WORDMASK, 16#ffffffff). +-define(MAX_SIGNED_INT, 16#7fffffff). +-define(MIN_SIGNED_INT, -16#80000000). +-define(MAX_UNSIGNED_INT, 16#ffffffff). + +-include("../main/hipe.hrl"). %% for ?EXIT + +-include("hipe_rtl_arith.inc"). |