diff options
Diffstat (limited to 'py')
| -rw-r--r-- | py/dynruntime.mk | 81 |
1 files changed, 62 insertions, 19 deletions
diff --git a/py/dynruntime.mk b/py/dynruntime.mk index 68d5e2e26..807befb46 100644 --- a/py/dynruntime.mk +++ b/py/dynruntime.mk @@ -29,16 +29,17 @@ CFLAGS += -Wall -Werror -DNDEBUG CFLAGS += -DNO_QSTR CFLAGS += -DMICROPY_ENABLE_DYNRUNTIME CFLAGS += -DMP_CONFIGFILE='<$(CONFIG_H)>' -CFLAGS += -fpic -fno-common -CFLAGS += -U _FORTIFY_SOURCE # prevent use of __*_chk libc functions -#CFLAGS += -fdata-sections -ffunction-sections + +CFLAGS_ARCH += -fpic -fno-common +CFLAGS_ARCH += -U_FORTIFY_SOURCE # prevent use of __*_chk libc functions +#CFLAGS_ARCH += -fdata-sections -ffunction-sections MPY_CROSS_FLAGS += -march=$(ARCH) SRC_O += $(addprefix $(BUILD)/, $(patsubst %.c,%.o,$(filter %.c,$(SRC))) $(patsubst %.S,%.o,$(filter %.S,$(SRC)))) SRC_MPY += $(addprefix $(BUILD)/, $(patsubst %.py,%.mpy,$(filter %.py,$(SRC)))) -CLEAN_EXTRA += $(MOD).mpy +CLEAN_EXTRA += $(MOD).mpy .mpy_ld_cache ################################################################################ # Architecture configuration @@ -47,72 +48,74 @@ ifeq ($(ARCH),x86) # x86 CROSS = -CFLAGS += -m32 -fno-stack-protector +CFLAGS_ARCH += -m32 -fno-stack-protector MICROPY_FLOAT_IMPL ?= double else ifeq ($(ARCH),x64) # x64 CROSS = -CFLAGS += -fno-stack-protector +CFLAGS_ARCH += -fno-stack-protector MICROPY_FLOAT_IMPL ?= double else ifeq ($(ARCH),armv6m) # thumb CROSS = arm-none-eabi- -CFLAGS += -mthumb -mcpu=cortex-m0 +CFLAGS_ARCH += -mthumb -mcpu=cortex-m0 MICROPY_FLOAT_IMPL ?= none else ifeq ($(ARCH),armv7m) # thumb CROSS = arm-none-eabi- -CFLAGS += -mthumb -mcpu=cortex-m3 +CFLAGS_ARCH += -mthumb -mcpu=cortex-m3 MICROPY_FLOAT_IMPL ?= none else ifeq ($(ARCH),armv7emsp) # thumb CROSS = arm-none-eabi- -CFLAGS += -mthumb -mcpu=cortex-m4 -CFLAGS += -mfpu=fpv4-sp-d16 -mfloat-abi=hard +CFLAGS_ARCH += -mthumb -mcpu=cortex-m4 +CFLAGS_ARCH += -mfpu=fpv4-sp-d16 -mfloat-abi=hard MICROPY_FLOAT_IMPL ?= float else ifeq ($(ARCH),armv7emdp) # thumb CROSS = arm-none-eabi- -CFLAGS += -mthumb -mcpu=cortex-m7 -CFLAGS += -mfpu=fpv5-d16 -mfloat-abi=hard +CFLAGS_ARCH += -mthumb -mcpu=cortex-m7 +CFLAGS_ARCH += -mfpu=fpv5-d16 -mfloat-abi=hard MICROPY_FLOAT_IMPL ?= double else ifeq ($(ARCH),xtensa) # xtensa CROSS = xtensa-lx106-elf- -CFLAGS += -mforce-l32 +CFLAGS_ARCH += -mforce-l32 MICROPY_FLOAT_IMPL ?= none else ifeq ($(ARCH),xtensawin) # xtensawin CROSS = xtensa-esp32-elf- -CFLAGS += MICROPY_FLOAT_IMPL ?= float else ifeq ($(ARCH),rv32imc) # rv32imc CROSS = riscv64-unknown-elf- -CFLAGS += -march=rv32imac -mabi=ilp32 -mno-relax +CFLAGS_ARCH += -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) +PICOLIBC_SPECS := $(shell $(CROSS)gcc --print-file-name=picolibc.specs) ifneq ($(PICOLIBC_SPECS),picolibc.specs) -CFLAGS += --specs=$(PICOLIBC_SPECS) +CFLAGS_ARCH += -specs=$(PICOLIBC_SPECS) +USE_PICOLIBC := 1 +PICOLIBC_ARCH := rv32imac +PICOLIBC_ABI := ilp32 endif MICROPY_FLOAT_IMPL ?= none @@ -122,7 +125,47 @@ $(error architecture '$(ARCH)' not supported) endif MICROPY_FLOAT_IMPL_UPPER = $(shell echo $(MICROPY_FLOAT_IMPL) | tr '[:lower:]' '[:upper:]') -CFLAGS += -DMICROPY_FLOAT_IMPL=MICROPY_FLOAT_IMPL_$(MICROPY_FLOAT_IMPL_UPPER) +CFLAGS += $(CFLAGS_ARCH) -DMICROPY_FLOAT_IMPL=MICROPY_FLOAT_IMPL_$(MICROPY_FLOAT_IMPL_UPPER) + +ifeq ($(LINK_RUNTIME),1) +# All of these picolibc-specific directives are here to work around a +# limitation of Ubuntu 22.04's RISC-V bare metal toolchain. In short, the +# specific version of GCC in use (10.2.0) does not seem to take into account +# extra paths provided by an explicitly passed specs file when performing name +# resolution via `--print-file-name`. +# +# If Picolibc is used and libc.a fails to resolve, then said file's path will +# be computed by searching the Picolibc libraries root for a libc.a file in a +# subdirectory whose path is built using the current `-march` and `-mabi` +# flags that are passed to GCC. The `PICOLIBC_ROOT` environment variable is +# checked to override the starting point for the library file search, and if +# it is not set then the default value is used, assuming that this is running +# on an Ubuntu 22.04 machine. +# +# This should be revised when the CI base image is updated to a newer Ubuntu +# version (that hopefully contains a newer RISC-V compiler) or to another Linux +# distribution. +ifeq ($(USE_PICOLIBC),1) +LIBM_NAME := libc.a +else +LIBM_NAME := libm.a +endif +LIBGCC_PATH := $(realpath $(shell $(CROSS)gcc $(CFLAGS) --print-libgcc-file-name)) +LIBM_PATH := $(realpath $(shell $(CROSS)gcc $(CFLAGS) --print-file-name=$(LIBM_NAME))) +ifeq ($(USE_PICOLIBC),1) +ifeq ($(LIBM_PATH),) +# The CROSS toolchain prefix usually ends with a dash, but that may not be +# always the case. If the prefix ends with a dash it has to be taken out as +# Picolibc's architecture directory won't have it in its name. GNU Make does +# not have any facility to perform character-level text manipulation so we +# shell out to sed. +CROSS_PREFIX := $(shell echo $(CROSS) | sed -e 's/-$$//') +PICOLIBC_ROOT ?= /usr/lib/picolibc/$(CROSS_PREFIX)/lib +LIBM_PATH := $(PICOLIBC_ROOT)/$(PICOLIBC_ARCH)/$(PICOLIBC_ABI)/$(LIBM_NAME) +endif +endif +MPY_LD_FLAGS += $(addprefix -l, $(LIBGCC_PATH) $(LIBM_PATH)) +endif CFLAGS += $(CFLAGS_EXTRA) @@ -165,7 +208,7 @@ $(BUILD)/%.mpy: %.py # Build native .mpy from object files $(BUILD)/$(MOD).native.mpy: $(SRC_O) $(ECHO) "LINK $<" - $(Q)$(MPY_LD) --arch $(ARCH) --qstrs $(CONFIG_H) -o $@ $^ + $(Q)$(MPY_LD) --arch $(ARCH) --qstrs $(CONFIG_H) $(MPY_LD_FLAGS) -o $@ $^ # Build final .mpy from all intermediate .mpy files $(MOD).mpy: $(BUILD)/$(MOD).native.mpy $(SRC_MPY) |