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// Copyright (c) 2006-2007 The Regents of The University of Michigan
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met: redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer;
// redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution;
// neither the name of the copyright holders nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
////////////////////////////////////////////////////////////////////
//
// Integer operate instructions
//
def template SetHiDecode {{
{
if (RD == 0 && IMM22 == 0)
return (SparcStaticInst *)(new Nop("nop", machInst, No_OpClass));
else
return (SparcStaticInst *)(new %(class_name)s(machInst));
}
}};
def template IntOpExecute {{
Fault %(class_name)s::execute(ExecContext *xc,
trace::InstRecord *traceData) const
{
Fault fault = NoFault;
%(op_decl)s;
%(op_rd)s;
%(code)s;
// Write the resulting state to the execution context
if (fault == NoFault) {
%(cc_code)s;
%(op_wb)s;
}
return fault;
}
}};
let {{
def doIntFormat(code, ccCode, name, Name, opt_flags):
code, immCode, iString = splitOutImm(code)
iop = InstObjParams(name, Name, 'IntOp',
{"code": code, "cc_code": ccCode},
opt_flags)
header_output = BasicDeclare.subst(iop)
decoder_output = BasicConstructor.subst(iop)
exec_output = IntOpExecute.subst(iop)
if immCode is not None:
imm_iop = InstObjParams(name, Name + 'Imm', 'IntOpImm' + iString,
{"code": immCode, "cc_code": ccCode}, opt_flags)
header_output += BasicDeclare.subst(imm_iop)
decoder_output += BasicConstructor.subst(imm_iop)
exec_output += IntOpExecute.subst(imm_iop)
decode_block = ROrImmDecode.subst(iop)
else:
decode_block = BasicDecode.subst(iop)
return (header_output, decoder_output, exec_output, decode_block)
calcCcCode = '''
uint16_t _ic, _iv, _iz, _in, _xc, _xv, _xz, _xn;
_in = (Rd >> 31) & 1;
_iz = ((Rd & 0xFFFFFFFF) == 0);
_xn = (Rd >> 63) & 1;
_xz = (Rd == 0);
_iv = %(iv)s & 1;
_ic = %(ic)s & 1;
_xv = %(xv)s & 1;
_xc = %(xc)s & 1;
Ccr = _ic << 0 | _iv << 1 | _iz << 2 | _in << 3 |
_xc << 4 | _xv << 5 | _xz << 6 | _xn << 7;
DPRINTF(Sparc, "in = %%d\\n", _in);
DPRINTF(Sparc, "iz = %%d\\n", _iz);
DPRINTF(Sparc, "xn = %%d\\n", _xn);
DPRINTF(Sparc, "xz = %%d\\n", _xz);
DPRINTF(Sparc, "iv = %%d\\n", _iv);
DPRINTF(Sparc, "ic = %%d\\n", _ic);
DPRINTF(Sparc, "xv = %%d\\n", _xv);
DPRINTF(Sparc, "xc = %%d\\n", _xc);
'''
default_ic = "findCarry(32, res, op1, op2)"
default_iv = "findOverflow(32, res, op1, op2)"
default_xc = "findCarry(64, res, op1, op2)"
default_xv = "findOverflow(64, res, op1, op2)"
default_sub_ic = "!findCarry(32, res, op1, ~op2)"
default_sub_iv = "findOverflow(32, res, op1, ~op2)"
default_sub_xc = "!findCarry(64, res, op1, ~op2)"
default_sub_xv = "findOverflow(64, res, op1, ~op2)"
}};
// Primary format for integer operate instructions:
def format IntOp(code, *opt_flags) {{
ccCode = ''
(header_output,
decoder_output,
exec_output,
decode_block) = doIntFormat(code, ccCode,
name, Name, opt_flags)
}};
// Primary format for integer operate instructions:
def format IntOpCc(code, ic=default_ic, iv=default_iv,
xc=default_xc, xv=default_xv,
sub=False, *opt_flags) {{
sub = sub != 'False'
if ic == "default_ic":
ic = default_sub_ic if sub else default_ic
if iv == "default_iv":
iv = default_sub_iv if sub else default_iv
if xc == "default_xc":
xc = default_sub_xc if sub else default_xc
if xv == "default_xv":
xv = default_sub_xv if sub else default_xv
ccCode = calcCcCode % vars()
(header_output,
decoder_output,
exec_output,
decode_block) = doIntFormat(code, ccCode, name, Name, opt_flags)
}};
// Primary format for integer operate instructions:
def format IntOpCcRes(code, ic=0, iv=0, xc=0, xv=0, *opt_flags) {{
ccCode = calcCcCode % {"ic" : ic, "iv" : iv, "xc" : xc, "xv" : xv}
(header_output,
decoder_output,
exec_output,
decode_block) = doIntFormat(code, ccCode,
name, Name, opt_flags)
}};
def format SetHi(code, *opt_flags) {{
iop = InstObjParams(name, Name, 'SetHi',
{"code": code, "cc_code": ''}, opt_flags)
header_output = BasicDeclare.subst(iop)
decoder_output = BasicConstructor.subst(iop)
exec_output = IntOpExecute.subst(iop)
decode_block = SetHiDecode.subst(iop)
}};