Re: [fpc-pascal] Is RV32I instruction set for RISC-V (embedded) supported?
On 3/5/21 6:22 PM, Florian Klämpfl via fpc-pascal wrote: It is not expected that it works as RiscV support is still work in progress, but it should work ;) I'll look into it. Thank you. For me, the compiler for RV32I/RV32IMAC works already pretty well. Regards, Bernd. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Is RV32I instruction set for RISC-V (embedded) supported?
I saw your changes in revision 48881, downloaded latest trunk, compiled with make crosszipinstall CPU_TARGET=riscv32 OS_TARGET=embedded SUBARCH=rv32i but the problem remains: make[4]: Entering directory '/home/bernd/fpc/fpc331/48882/src/rtl/embedded' /bin/mkdir -p /home/bernd/fpc/fpc331/48882/src/rtl/units/riscv32-embedded /home/bernd/fpc/fpc331/48882/src/compiler/ppcrossrv32 -Ur -Cprv32i -Tembedded -Priscv32 -XPriscv32-embedded- -Ur -Xs -O2 -n -Fi../inc -Fi../riscv32 -FE. -FU/home/bernd/fpc/fpc331/48882/src/rtl/units/riscv32-embedded -Fl/home/bernd/riscv/riscv_2008/lib/gcc/riscv64-unknown-elf/10.1.0/rv64imafdc/lp64d -driscv32 -dRELEASE -al -Us -Sg system.pp @system.cfg /home/bernd/fpc/fpc331/48882/src/rtl/units/riscv32-embedded/system.s: Assembler messages: /home/bernd/fpc/fpc331/48882/src/rtl/units/riscv32-embedded/system.s:39578: Error: unrecognized opcode `mul x11,x11,x10' ... system.pp(311) Error: Error while assembling exitcode 1 system.pp(311) Fatal: There were 2 errors compiling module, stopping The compiler still seems to produce mul opcodes. Regards, Bernd. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
[fpc-pascal] Is RV32I instruction set for RISC-V (embedded) supported?
Hello, I would like to use fpc to program a FPGA softcore RISC-V cpu. The softcore has the RV32I instruction set implemented. I modified the Makefile in rtl/embedded, so that the known SUBARCH rv32imac replaces the option -Cprv32imac with now -Cprv32i. But this leads to the following error message, when I try to compile the crosscompiler/rtl: /home/bernd/fpc/fpc331/48875/src/compiler/ppcrossrv32 -Ur -Cprv32i -Tembedded -Priscv32 -XPriscv32-embedded- -Ur -Xs -O2 -n -Fi../inc -Fi../riscv32 -FE. -FU/home/bernd/fpc/fpc331/48875/src/rtl/units/riscv32-embedded -Fl/home/bernd/riscv/riscv_2008/lib/gcc/riscv64-unknown-elf/10.1.0/rv64imafdc/lp64d -driscv32 -dRELEASE -al -Us -Sg system.pp @system.cfg /home/bernd/fpc/fpc331/48875/src/rtl/units/riscv32-embedded/system.s: Assembler messages: /home/bernd/fpc/fpc331/48875/src/rtl/units/riscv32-embedded/system.s:39578: Error: unrecognized opcode `mul x11,x11,x10' Is this expected, since RV32I is not supported, or should this work? Regards, Bernd. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
