cde05cf214
Add -O2 option to AFLAGS to enable asm code optimization for m32r. On m32r gas, "-m32r2 -O" option enables assembler's parallel code generation optimization for M32R2 ISA as a default. So, "-no-parallel" option is required explicitly for a cpu core with single instuction issuing, for example, VDEC2. Signed-off-by: Hirokazu Takata <takata@linux-m32r.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
57 lines
1.2 KiB
Makefile
57 lines
1.2 KiB
Makefile
#
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# m32r/Makefile
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#
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LDFLAGS :=
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OBJCOPYFLAGS := -O binary -R .note -R .comment -S
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LDFLAGS_vmlinux := -e startup_32
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CFLAGS += -pipe -fno-schedule-insns
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CFLAGS_KERNEL += -mmodel=medium
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CFLAGS_MODULE += -mmodel=large
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ifdef CONFIG_CHIP_VDEC2
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cflags-$(CONFIG_ISA_M32R2) += -DNO_FPU -Wa,-bitinst
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aflags-$(CONFIG_ISA_M32R2) += -DNO_FPU -O2 -Wa,-bitinst -Wa,-no-parallel
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else
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cflags-$(CONFIG_ISA_M32R2) += -DNO_FPU -m32r2
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aflags-$(CONFIG_ISA_M32R2) += -DNO_FPU -m32r2 -O2
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endif
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cflags-$(CONFIG_ISA_M32R) += -DNO_FPU
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aflags-$(CONFIG_ISA_M32R) += -DNO_FPU -O2 -Wa,-no-bitinst
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CFLAGS += $(cflags-y)
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AFLAGS += $(aflags-y)
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CHECKFLAGS += -D__m32r__ -D__BIG_ENDIAN__=1
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head-y := arch/m32r/kernel/head.o arch/m32r/kernel/init_task.o
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LIBGCC := $(shell $(CC) $(CFLAGS) -print-libgcc-file-name)
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libs-y += arch/m32r/lib/ $(LIBGCC)
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core-y += arch/m32r/kernel/ \
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arch/m32r/mm/ \
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arch/m32r/boot/
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drivers-$(CONFIG_OPROFILE) += arch/m32r/oprofile/
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boot := arch/m32r/boot
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.PHONY: zImage
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all: zImage
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zImage: vmlinux
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$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
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compressed: zImage
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archclean:
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$(Q)$(MAKE) $(clean)=$(boot)
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define archhelp
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echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
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endef
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