Bug: TRAP after >8000 clock cycles

[kaminto-1999]

I have tried to run all the "make test" in the root folder. But seem like the "make test" command returns an Error after the run for about 8000 cycles. Does anyone know how to fix it? Thank you.

[filamoon]

Same here. No error messages at all.

[ogris]

I got a little bit more information after chainging the picorv32.v file: ` Built with Verilator 4.038 2020-07-11.

Recommended: Verilator 4.0 or later.

MISALIGNED WORD: 0x00000152

MISALIGNED WORD: 0x00000152

TRAP after 8223 clock cycles

ERROR!

%Error: testbench.v:271: Verilog $stop `

[TurBoss]

hello, i managed to get it build by using this command

make TOOLCHAIN_PREFIX=riscv32-unknown-elf-

:)

Edit: doesn't work after a make clean ..., so not the solution

Edit2: found that need to set path to opt

export PATH=/opt/riscv32im/bin:$PATH

here for im

[rigoorozco]

I'm getting the same thing. I was able to get around it using version 10.2.0 here: https://github.com/xpack-dev-tools/riscv-none-embed-gcc-xpack/releases/

Not sure what the problem is but it seems to not work with newer versions of gcc

[rigoorozco]

Got around this issue on GCC 13.2.0 doing the following to the Makefile:

diff --git a/Makefile b/Makefile
index d7027e3..feda8a7 100644
--- a/Makefile
+++ b/Makefile
@@ -15,8 +15,8 @@ TEST_OBJS = $(addsuffix .o,$(basename $(wildcard tests/*.S)))
 FIRMWARE_OBJS = firmware/start.o firmware/irq.o firmware/print.o firmware/hello.o firmware/sieve.o firmware/multest.o firmware/stats.o
 GCC_WARNS  = -Werror -Wall -Wextra -Wshadow -Wundef -Wpointer-arith -Wcast-qual -Wcast-align -Wwrite-strings
 GCC_WARNS += -Wredundant-decls -Wstrict-prototypes -Wmissing-prototypes -pedantic # -Wconversion
-TOOLCHAIN_PREFIX = $(RISCV_GNU_TOOLCHAIN_INSTALL_PREFIX)i/bin/riscv32-unknown-elf-
-COMPRESSED_ISA = C
+TOOLCHAIN_PREFIX ?= $(RISCV_GNU_TOOLCHAIN_INSTALL_PREFIX)i/bin/riscv32-unknown-elf-
+COMPRESSED_ISA = 

 # Add things like "export http_proxy=... https_proxy=..." here
 GIT_ENV = true
@@ -116,7 +116,7 @@ firmware/start.o: firmware/start.S
        $(TOOLCHAIN_PREFIX)gcc -c -mabi=ilp32 -march=rv32im$(subst C,c,$(COMPRESSED_ISA)) -o $@ $<

 firmware/%.o: firmware/%.c
-       $(TOOLCHAIN_PREFIX)gcc -c -mabi=ilp32 -march=rv32i$(subst C,c,$(COMPRESSED_ISA)) -Os --std=c99 $(GCC_WARNS) -ffreestanding -nostdlib -o $@ $<
+       $(TOOLCHAIN_PREFIX)gcc -c -mabi=ilp32 -march=rv32im$(subst C,c,$(COMPRESSED_ISA)) -Os --std=c99 $(GCC_WARNS) -ffreestanding -nostdlib -o $@ $<

 tests/%.o: tests/%.S tests/riscv_test.h tests/test_macros.h
        $(TOOLCHAIN_PREFIX)gcc -c -mabi=ilp32 -march=rv32im -o $@ -DTEST_FUNC_NAME=$(notdir $(basename $<)) \

[zavs]

It was solved by modifying the start.S to fix the alignment in issue #210 . rethhelo also opened a PR to fix the problem #218 . "This PR forces irq_regs to always be aligned with .balign 0x200, by doing this solves the problem." in start.S

[KrystalDelusion]

Closed by #218