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edd42aa42a
future use by high level code generator targets
o this in turn required that all a_load*_loc* methods are called via
hlcg rather than via cg, since a location can be a subsetref/reg and
and those are no longer handled in tcg
o that then required moving several force_location_* routines into
thlcg because they use a_load_loc*, but did not take tdef size
parameters (which are required by the thlcg a_load_loc* routines)
o the only practical consequence is that from now on, you have to
use hlcg.location_force_mem/reg() (fpureg not yet) and
hlcg.gen_load_loc_cgpara() instead of the removed versions from ncgutil,
and hlcg.a_load*loc*() instead of cg.a_load*loc* if a subsetref/reg
might be involved
git-svn-id: trunk@21287 -
123 lines
4.4 KiB
ObjectPascal
123 lines
4.4 KiB
ObjectPascal
{
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Copyright (c) 1998-2010 by Florian Klaempfl and Jonas Maebe
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Member of the Free Pascal development team
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This unit contains high-level code generator support for ppc32
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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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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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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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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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****************************************************************************
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}
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unit hlcgcpu;
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{$i fpcdefs.inc}
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interface
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uses
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aasmdata,
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symtype,
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cgbase,cgutils,hlcgobj,hlcgppc;
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type
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thlcgcpu = class(thlcgppcgen)
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procedure a_load_subsetreg_reg(list: TAsmList; subsetsize, tosize: tdef; const sreg: tsubsetregister; destreg: tregister); override;
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procedure a_load_subsetreg_subsetreg(list: TAsmlist; fromsubsetsize, tosubsetsize: tdef; const fromsreg, tosreg: tsubsetregister); override;
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protected
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procedure a_load_regconst_subsetreg_intern(list: TAsmList; fromsize, subsetsize: tdef; fromreg: tregister; const sreg: tsubsetregister; slopt: tsubsetloadopt); override;
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end;
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procedure create_hlcodegen;
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implementation
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uses
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verbose,
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cpubase,aasmcpu,
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defutil,
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cgobj,cgcpu;
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{ thlcgppc }
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procedure thlcgcpu.a_load_subsetreg_reg(list: TAsmList; subsetsize, tosize: tdef; const sreg: tsubsetregister; destreg: tregister);
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var
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cgsubsetsize,
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cgtosize: tcgsize;
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begin
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if (sreg.bitlen > 32) then
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internalerror(2008020701);
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cgsubsetsize:=def_cgsize(subsetsize);
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cgtosize:=def_cgsize(tosize);
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if (sreg.bitlen <> 32) then
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begin
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list.concat(taicpu.op_reg_reg_const_const_const(A_RLWINM,destreg,
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sreg.subsetreg,(32-sreg.startbit) and 31,32-sreg.bitlen,31));
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{ types with a negative lower bound are always a base type (8, 16, 32 bits) }
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if (cgsubsetsize in [OS_S8..OS_S128]) then
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if ((sreg.bitlen mod 8) = 0) then
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begin
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cg.a_load_reg_reg(list,tcgsize2unsigned[cgsubsetsize],cgsubsetsize,destreg,destreg);
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cg.a_load_reg_reg(list,cgsubsetsize,cgtosize,destreg,destreg);
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end
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else
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begin
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cg.a_op_const_reg(list,OP_SHL,OS_INT,32-sreg.bitlen,destreg);
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cg.a_op_const_reg(list,OP_SAR,OS_INT,32-sreg.bitlen,destreg);
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end;
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end
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else
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cg.a_load_reg_reg(list,cgsubsetsize,cgtosize,sreg.subsetreg,destreg);
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end;
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procedure thlcgcpu.a_load_subsetreg_subsetreg(list: TAsmlist; fromsubsetsize, tosubsetsize: tdef; const fromsreg, tosreg: tsubsetregister);
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begin
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if (tosreg.bitlen>32) or (tosreg.startbit>31) then
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internalerror(2008020703);
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if (fromsreg.bitlen>=tosreg.bitlen) then
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list.concat(taicpu.op_reg_reg_const_const_const(A_RLWIMI,tosreg.subsetreg, fromsreg.subsetreg,
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(tosreg.startbit-fromsreg.startbit) and 31,
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32-tosreg.startbit-tosreg.bitlen,31-tosreg.startbit))
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else
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inherited a_load_subsetreg_subsetreg(list,fromsubsetsize,tosubsetsize,fromsreg,tosreg);
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end;
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procedure thlcgcpu.a_load_regconst_subsetreg_intern(list: TAsmList; fromsize, subsetsize: tdef; fromreg: tregister; const sreg: tsubsetregister; slopt: tsubsetloadopt);
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begin
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if (slopt in [SL_SETZERO,SL_SETMAX]) then
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inherited a_load_regconst_subsetreg_intern(list,fromsize,subsetsize,fromreg,sreg,slopt)
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else if (sreg.bitlen>32) then
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internalerror(2008020702)
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else if (sreg.bitlen<>32) then
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list.concat(taicpu.op_reg_reg_const_const_const(A_RLWIMI,sreg.subsetreg,fromreg,
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sreg.startbit,32-sreg.startbit-sreg.bitlen,31-sreg.startbit))
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else
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cg.a_load_reg_reg(list,def_cgsize(fromsize),def_cgsize(subsetsize),fromreg,sreg.subsetreg);
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end;
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procedure create_hlcodegen;
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begin
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hlcg:=thlcgcpu.create;
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create_codegen;
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end;
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end.
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