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Add rules for RISC-V.

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Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
This commit is contained in:
NIIBE Yutaka
2019-12-03 13:47:55 +09:00
parent 6e1c791b04
commit 6ce92cc0e8
2 changed files with 18 additions and 3 deletions
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ChangeLog
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@@ -1,5 +1,8 @@
2019-12-03 NIIBE Yutaka <gniibe@fsij.org> 2019-12-03 NIIBE Yutaka <gniibe@fsij.org>
* rules.mk [ARCH=riscv32] (MCFLAGS, LDFLAGS): Define.
(CFLAGS, LDFLAGS): Don't add -m for ARM specific.
* example-lcd: New. * example-lcd: New.
2019-12-03 NIIBE Yutaka <gniibe@fsij.org> 2019-12-03 NIIBE Yutaka <gniibe@fsij.org>

18
rules.mk
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@@ -62,24 +62,36 @@ LLIBDIR = $(patsubst %,-L%,$(LIBDIR))
VPATH = $(sort $(dir $(CSRC))) VPATH = $(sort $(dir $(CSRC)))
### ###
ifeq ($(EMULATION),) ifeq ($(EMULATION),)
ifeq ($(ARCH),riscv32)
# For now, just for my use of picolibc
INCDIR += /usr/local/picolibc/riscv64-unknown-elf/include
LIBDIR += /usr/local/picolibc/riscv64-unknown-elf/lib/rv32imac/ilp32
#
MCFLAGS = -march=rv32imac -mabi=ilp32
LDFLAGS = $(MCFLAGS) -nodefaultlibs -nostartfiles -lc -T$(LDSCRIPT) \
-Wl,-Map=$(BUILDDIR)/$(PROJECT).map,--cref,--no-warn-mismatch
else
MCFLAGS = -mcpu=$(MCU) MCFLAGS = -mcpu=$(MCU)
LDFLAGS = $(MCFLAGS) -nostartfiles -T$(LDSCRIPT) \ LDFLAGS = $(MCFLAGS) -nostartfiles -T$(LDSCRIPT) \
-Wl,-Map=$(BUILDDIR)/$(PROJECT).map,--cref,--no-warn-mismatch,--gc-sections -Wl,-Map=$(BUILDDIR)/$(PROJECT).map,--cref,--no-warn-mismatch,--gc-sections
DEFS += -DARCH_HEADER='"chopstx-$(ARCH).h"' -DARCH_IMPL='"chopstx-$(ARCH).c"' endif
else else
MCFLAGS = MCFLAGS =
LDFLAGS = LDFLAGS =
DEFS += -D_GNU_SOURCE -DARCH_HEADER='"chopstx-gnu-linux.h"' \ DEFS += -D_GNU_SOURCE
-DARCH_IMPL='"chopstx-gnu-linux.c"'
endif endif
DEFS += -DARCH_HEADER='"chopstx-$(ARCH).h"' -DARCH_IMPL='"chopstx-$(ARCH).c"'
CFLAGS = $(MCFLAGS) $(OPT) $(CWARN) -Wa,-alms=$(BUILDDIR)/$(notdir $(<:.c=.lst)) $(DEFS) CFLAGS = $(MCFLAGS) $(OPT) $(CWARN) -Wa,-alms=$(BUILDDIR)/$(notdir $(<:.c=.lst)) $(DEFS)
LDFLAGS += $(LLIBDIR) LDFLAGS += $(LLIBDIR)
ifeq ($(EMULATION),) ifeq ($(EMULATION),)
ifeq ($(ARCH),riscv32)
else
CFLAGS += -mthumb -mno-thumb-interwork -DTHUMB CFLAGS += -mthumb -mno-thumb-interwork -DTHUMB
LDFLAGS += -mthumb -mno-thumb-interwork LDFLAGS += -mthumb -mno-thumb-interwork
endif endif
endif
CFLAGS += -MD -MP -MF .dep/$(@F).d CFLAGS += -MD -MP -MF .dep/$(@F).d