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tools/mpy_ld.py: Add native modules support for RV32 code.

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This commit adds support for RV32IMC native modules, as in embedding native
code into a self-contained MPY module and and make its exported functions
available to the MicroPython environment.

Signed-off-by: Alessandro Gatti <a.gatti@frob.it>
This commit is contained in:
Alessandro Gatti
2024-06-23 08:18:04 +02:00
committed by Damien George
parent 136058496f
commit 6760e00817
13 changed files with 425 additions and 16 deletions
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16
py/dynruntime.mk
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@@ -99,6 +99,22 @@ CROSS = xtensa-esp32-elf-
CFLAGS +=
MICROPY_FLOAT_IMPL ?= float
else ifeq ($(ARCH),rv32imc)
# rv32imc
CROSS = riscv64-unknown-elf-
CFLAGS += -march=rv32imac -mabi=ilp32 -mno-relax
# If Picolibc is available then select it explicitly. Ubuntu 22.04 ships its
# bare metal RISC-V toolchain with Picolibc rather than Newlib, and the default
# is "nosys" so a value must be provided. To avoid having per-distro
# workarounds, always select Picolibc if available.
PICOLIBC_SPECS = $(shell $(CROSS)gcc --print-file-name=picolibc.specs)
ifneq ($(PICOLIBC_SPECS),picolibc.specs)
CFLAGS += --specs=$(PICOLIBC_SPECS)
endif
MICROPY_FLOAT_IMPL ?= none
else
$(error architecture '$(ARCH)' not supported)
endif