Fix to run environment problem.

Makefile

@@ -1,6 +1,6 @@
 
 RISCV_GNU_TOOLCHAIN_GIT_REVISION = 411d134
-RISCV_GNU_TOOLCHAIN_INSTALL_PREFIX = /opt/riscv32
+RISCV_GNU_TOOLCHAIN_INSTALL_PREFIX = /opt/riscv
 
 # Give the user some easy overrides for local configuration quirks.
 # If you change one of these and it breaks, then you get to keep both pieces.
@@ -15,7 +15,7 @@ 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-
+TOOLCHAIN_PREFIX = $(RISCV_GNU_TOOLCHAIN_INSTALL_PREFIX)/bin/riscv32-unknown-elf-
 COMPRESSED_ISA = C
 
 # Add things like "export http_proxy=... https_proxy=..." here

dhrystone/Makefile

@@ -1,7 +1,7 @@
 USE_MYSTDLIB = 0
 OBJS = dhry_1.o dhry_2.o stdlib.o
 CFLAGS = -MD -O3 -mabi=ilp32 -march=rv32im -DTIME -DRISCV
-TOOLCHAIN_PREFIX = /opt/riscv32im/bin/riscv32-unknown-elf-
+TOOLCHAIN_PREFIX = /opt/riscv/bin/riscv32-unknown-elf-
 
 ifeq ($(USE_MYSTDLIB),1)
 CFLAGS += -DUSE_MYSTDLIB -ffreestanding -nostdlib

firmware/start.S

@@ -327,9 +327,7 @@ irq_vec:
 
 	picorv32_retirq_insn()
 
-#ifndef ENABLE_QREGS
 .balign 0x200
-#endif
 irq_regs:
 	// registers are saved to this memory region during interrupt handling
 	// the program counter is saved as register 0