1 files changed, 78 insertions, 0 deletions
diff --git a/riscv/trunk/compiler/riscv64/hlcgcpu.pas b/riscv/trunk/compiler/riscv64/hlcgcpu.pas
new file mode 100644
index 0000000000..3c0f4968f7
--- /dev/null
+++ b/riscv/trunk/compiler/riscv64/hlcgcpu.pas
@@ -0,0 +1,78 @@
+{
+    Copyright (c) 1998-2010 by Florian Klaempfl and Jonas Maebe
+    Member of the Free Pascal development team
+
+    This unit contains high-level code generator support for riscv64
+
+    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
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+ ****************************************************************************
+}
+
+unit hlcgcpu;
+
+{$i fpcdefs.inc}
+
+interface
+
+uses
+  globtype,
+  aasmdata,
+  symtype,
+  cgbase,cgutils,hlcgobj,hlcgrv;
+
+type
+  thlcgcpu = class(thlcgriscv)
+    procedure a_load_const_subsetreg(list: TAsmlist; tosubsetsize: tdef; a: tcgint; const sreg: tsubsetregister); override;
+  end;
+
+   procedure create_hlcodegen;
+
+implementation
+
+  uses
+    cpubase,aasmcpu,
+    defutil,
+    cgobj,cgcpu;
+
+  { thlcgcpu }
+
+
+  procedure thlcgcpu.a_load_const_subsetreg(list: TAsmlist; tosubsetsize: tdef; a: tcgint; const sreg: tsubsetregister);
+    var
+      tmpreg : TRegister;
+    begin
+{$ifdef extdebug}
+      list.concat(tai_comment.create(strpnew('a_load_const_subsetreg subsetregsize = ' + cgsize2string(sreg.subsetregsize) + ' subsetsize = ' + cgsize2string(def_cgsize(subsetsize)) + ' startbit = ' + intToStr(sreg.startbit) + ' a = ' + intToStr(a))));
+{$endif}
+      { loading the constant into the lowest bits of a temp register and then inserting is
+        better than loading some usually large constants and do some masking and shifting on riscv64 }
+      tmpreg:=getintregister(list,tosubsetsize);
+      a_load_const_reg(list,tosubsetsize,a,tmpreg);
+      a_load_reg_subsetreg(list,tosubsetsize,tosubsetsize,tmpreg,sreg);
+    end;
+
+
+  procedure create_hlcodegen;
+    begin
+      hlcg:=thlcgcpu.create;
+      create_codegen;
+    end;
+
+
+
+begin
+  chlcgobj:=thlcgcpu;
+end.