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Diffstat (limited to 'riscv_new/compiler/riscv/nrvcon.pas')
| -rw-r--r-- | riscv_new/compiler/riscv/nrvcon.pas | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/riscv_new/compiler/riscv/nrvcon.pas b/riscv_new/compiler/riscv/nrvcon.pas new file mode 100644 index 0000000000..66698527b7 --- /dev/null +++ b/riscv_new/compiler/riscv/nrvcon.pas @@ -0,0 +1,131 @@ +{ + Copyright (c) 1998-2002 by Florian Klaempfl + + Code generation for const nodes on the Risc-V + + 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 nrvcon; + +{$i fpcdefs.inc} + +interface + + uses + ncgcon,cpubase; + + type + trvrealconstnode = class(tcgrealconstnode) + procedure pass_generate_code;override; + end; + + +implementation + + uses + verbose, + globtype,globals, + cpuinfo, + aasmbase,aasmtai,aasmdata,symdef, + defutil, + cgbase,cgutils, + procinfo, + ncon; + +{***************************************************************************** + TARMREALCONSTNODE +*****************************************************************************} + + procedure trvrealconstnode.pass_generate_code; + { I suppose the parser/pass_1 must make sure the generated real } + { constants are actually supported by the target processor? (JM) } + const + floattype2ait:array[tfloattype] of tairealconsttype= + (aitrealconst_s32bit,aitrealconst_s64bit,aitrealconst_s80bit,aitrealconst_s80bit,aitrealconst_s64comp,aitrealconst_s64comp,aitrealconst_s128bit); + var + lastlabel : tasmlabel; + realait : tairealconsttype; + + begin + location_reset_ref(location,LOC_CREFERENCE,def_cgsize(resultdef),4); + lastlabel:=nil; + realait:=floattype2ait[tfloatdef(resultdef).floattype]; + { const already used ? } + if not assigned(lab_real) then + begin + current_asmdata.getjumplabel(lastlabel); + lab_real:=lastlabel; + current_procinfo.aktlocaldata.concat(Tai_label.Create(lastlabel)); + location.reference.symboldata:=current_procinfo.aktlocaldata.last; + case realait of + aitrealconst_s32bit : + begin + current_procinfo.aktlocaldata.concat(tai_realconst.create_s32real(ts32real(value_real))); + { range checking? } + if floating_point_range_check_error and + (tai_realconst(current_procinfo.aktlocaldata.last).value.s32val=MathInf.Value) then + Message(parser_e_range_check_error); + end; + + aitrealconst_s64bit : + begin + current_procinfo.aktlocaldata.concat(tai_realconst.create_s64real(ts64real(value_real))); + + { range checking? } + if floating_point_range_check_error and + (tai_realconst(current_procinfo.aktlocaldata.last).value.s64val=MathInf.Value) then + Message(parser_e_range_check_error); + end; + + aitrealconst_s80bit : + begin + current_procinfo.aktlocaldata.concat(tai_realconst.create_s80real(value_real,tfloatdef(resultdef).size)); + + { range checking? } + if floating_point_range_check_error and + (tai_realconst(current_procinfo.aktlocaldata.last).value.s80val=MathInf.Value) then + Message(parser_e_range_check_error); + end; +{$ifdef cpufloat128} + aitrealconst_s128bit : + begin + current_procinfo.aktlocaldata.concat(tai_realconst.create_s128real(value_real)); + + { range checking? } + if floating_point_range_check_error and + (tai_realconst(current_procinfo.aktlocaldata.last).value.s128val=MathInf.Value) then + Message(parser_e_range_check_error); + end; +{$endif cpufloat128} + + { the round is necessary for native compilers where comp isn't a float } + aitrealconst_s64comp : + if (value_real>9223372036854775807.0) or (value_real<-9223372036854775808.0) then + message(parser_e_range_check_error) + else + current_procinfo.aktlocaldata.concat(tai_realconst.create_s64compreal(round(value_real))); + else + internalerror(2005092401); + end; + end; + location.reference.symbol:=lab_real; + location.reference.refaddr:=addr_pcrel; + end; + +begin + crealconstnode:=trvrealconstnode; +end. |