# for "archclean" cleaning up for this architecture.
#
+as-option = $(shell if $(CC) $(CFLAGS) $(1) -Wa,-Z -c -o /dev/null \
+ -xassembler /dev/null > /dev/null 2>&1; then echo "$(1)"; \
+ else echo "$(2)"; fi ;)
+
cflags-y :=
#
endif
ifdef CONFIG_32BIT
+gcc-abi = 32
tool-prefix = $(32bit-tool-prefix)
UTS_MACHINE := mips
endif
ifdef CONFIG_64BIT
+gcc-abi = 64
tool-prefix = $(64bit-tool-prefix)
UTS_MACHINE := mips64
endif
CROSS_COMPILE := $(tool-prefix)
endif
-ifdef CONFIG_32BIT
-ld-emul = $(32bit-emul)
-vmlinux-32 = vmlinux
-vmlinux-64 = vmlinux.64
-
-cflags-y += -mabi=32
-endif
+CHECKFLAGS-y += -D__linux__ -D__mips__ \
+ -D_MIPS_SZINT=32 \
+ -D_ABIO32=1 \
+ -D_ABIN32=2 \
+ -D_ABI64=3
+CHECKFLAGS-$(CONFIG_32BIT) += -D_MIPS_SIM=_ABIO32 \
+ -D_MIPS_SZLONG=32 \
+ -D_MIPS_SZPTR=32 \
+ -D__PTRDIFF_TYPE__=int
+CHECKFLAGS-$(CONFIG_64BIT) += -m64 -D_MIPS_SIM=_ABI64 \
+ -D_MIPS_SZLONG=64 \
+ -D_MIPS_SZPTR=64 \
+ -D__PTRDIFF_TYPE__="long int"
+CHECKFLAGS-$(CONFIG_CPU_BIG_ENDIAN) += -D__MIPSEB__
+CHECKFLAGS-$(CONFIG_CPU_LITTLE_ENDIAN) += -D__MIPSEL__
+
+CHECKFLAGS = $(CHECKFLAGS-y)
-ifdef CONFIG_64BIT
+ifdef CONFIG_BUILD_ELF64
+gas-abi = 64
ld-emul = $(64bit-emul)
vmlinux-32 = vmlinux.32
vmlinux-64 = vmlinux
-
-cflags-y += -mabi=64
-ifdef CONFIG_BUILD_ELF64
-cflags-y += $(call cc-option,-mno-explicit-relocs)
else
-cflags-y += $(call cc-option,-msym32)
-endif
-endif
+gas-abi = 32
+ld-emul = $(32bit-emul)
+vmlinux-32 = vmlinux
+vmlinux-64 = vmlinux.64
+cflags-$(CONFIG_64BIT) += $(call cc-option,-mno-explicit-relocs)
+endif
#
# GCC uses -G 0 -mabicalls -fpic as default. We don't want PIC in the kernel
# carefully avoid to add it redundantly because gcc 3.3/3.4 complains
# when fed the toolchain default!
#
-cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' && echo -EB -D__MIPSEB__)
-cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL -D__MIPSEL__)
+cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' && echo -EB)
+cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL)
cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \
-fno-omit-frame-pointer
+#
+# Use: $(call set_gccflags,<cpu0>,<isa0>,<cpu1>,<isa1>,<isa2>)
+#
+# <cpu0>,<isa0> -- preferred CPU and ISA designations (may require
+# recent tools)
+# <cpu1>,<isa1> -- fallback CPU and ISA designations (have to work
+# with up to the oldest supported tools)
+# <isa2> -- an ISA designation used as an ABI selector for
+# gcc versions that do not support "-mabi=32"
+# (depending on the CPU type, either "mips1" or
+# "mips2")
+#
+set_gccflags = $(shell \
+while :; do \
+ cpu=$(1); isa=-$(2); \
+ for gcc_opt in -march= -mcpu=; do \
+ $(CC) $$gcc_opt$$cpu $$isa -S -o /dev/null \
+ -xc /dev/null > /dev/null 2>&1 && \
+ break 2; \
+ done; \
+ cpu=$(3); isa=-$(4); \
+ for gcc_opt in -march= -mcpu=; do \
+ $(CC) $$gcc_opt$$cpu $$isa -S -o /dev/null \
+ -xc /dev/null > /dev/null 2>&1 && \
+ break 2; \
+ done; \
+ break; \
+done; \
+gcc_abi=-mabi=$(gcc-abi); gcc_cpu=$$cpu; \
+if $(CC) $$gcc_abi -S -o /dev/null -xc /dev/null > /dev/null 2>&1; then \
+ gcc_isa=$$isa; \
+else \
+ gcc_abi=; gcc_isa=-$(5); \
+fi; \
+gas_abi=-Wa,-$(gcc-abi); gas_cpu=$$cpu; gas_isa=-Wa,$$isa; \
+while :; do \
+ for gas_opt in -Wa,-march= -Wa,-mcpu=; do \
+ $(CC) $$gas_abi $$gas_opt$$cpu $$gas_isa -Wa,-Z -c \
+ -o /dev/null -xassembler /dev/null > /dev/null 2>&1 && \
+ break 2; \
+ done; \
+ gas_abi=; gas_opt=; gas_cpu=; gas_isa=; \
+ break; \
+done; \
+if test "$(gcc-abi)" != "$(gas-abi)"; then \
+ gas_abi="-Wa,-$(gas-abi) -Wa,-mgp$(gcc-abi)"; \
+fi; \
+if test "$$gcc_opt" = -march= && test -n "$$gcc_abi"; then \
+ $(CC) $$gcc_abi $$gcc_opt$$gcc_cpu -S -o /dev/null \
+ -xc /dev/null > /dev/null 2>&1 && \
+ gcc_isa=; \
+fi; \
+echo $$gcc_abi $$gcc_opt$$gcc_cpu $$gcc_isa $$gas_abi $$gas_opt$$gas_cpu $$gas_isa)
+
#
# CPU-dependent compiler/assembler options for optimization.
#
-cflags-$(CONFIG_CPU_R3000) += -march=r3000
-cflags-$(CONFIG_CPU_TX39XX) += -march=r3900
-cflags-$(CONFIG_CPU_R6000) += -march=r6000 -Wa,--trap
-cflags-$(CONFIG_CPU_R4300) += -march=r4300 -Wa,--trap
-cflags-$(CONFIG_CPU_VR41XX) += -march=r4100 -Wa,--trap
-cflags-$(CONFIG_CPU_R4X00) += -march=r4600 -Wa,--trap
-cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap
-cflags-$(CONFIG_CPU_MIPS32_R1) += $(call cc-option,-march=mips32,-mips32 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
- -Wa,-mips32 -Wa,--trap
-cflags-$(CONFIG_CPU_MIPS32_R2) += $(call cc-option,-march=mips32r2,-mips32r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
- -Wa,-mips32r2 -Wa,--trap
-cflags-$(CONFIG_CPU_MIPS64_R1) += $(call cc-option,-march=mips64,-mips64 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
- -Wa,-mips64 -Wa,--trap
-cflags-$(CONFIG_CPU_MIPS64_R2) += $(call cc-option,-march=mips64r2,-mips64r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
- -Wa,-mips64r2 -Wa,--trap
-cflags-$(CONFIG_CPU_R5000) += -march=r5000 -Wa,--trap
-cflags-$(CONFIG_CPU_R5432) += $(call cc-option,-march=r5400,-march=r5000) \
+cflags-$(CONFIG_CPU_R3000) += \
+ $(call set_gccflags,r3000,mips1,r3000,mips1,mips1)
+CHECKFLAGS-$(CONFIG_CPU_R3000) += -D_MIPS_ISA=_MIPS_ISA_MIPS1
+
+cflags-$(CONFIG_CPU_TX39XX) += \
+ $(call set_gccflags,r3900,mips1,r3000,mips1,mips1)
+CHECKFLAGS-$(CONFIG_CPU_TX39XX) += -D_MIPS_ISA=_MIPS_ISA_MIPS1
+
+cflags-$(CONFIG_CPU_R6000) += \
+ $(call set_gccflags,r6000,mips2,r6000,mips2,mips2) \
+ -Wa,--trap
+CHECKFLAGS-$(CONFIG_CPU_R6000) += -D_MIPS_ISA=_MIPS_ISA_MIPS2
+
+cflags-$(CONFIG_CPU_R4300) += \
+ $(call set_gccflags,r4300,mips3,r4300,mips3,mips2) \
+ -Wa,--trap
+CHECKFLAGS-$(CONFIG_CPU_R4300) += -D_MIPS_ISA=_MIPS_ISA_MIPS3
+
+cflags-$(CONFIG_CPU_VR41XX) += \
+ $(call set_gccflags,r4100,mips3,r4600,mips3,mips2) \
+ -Wa,--trap
+CHECKFLAGS-$(CONFIG_CPU_VR41XX) += -D_MIPS_ISA=_MIPS_ISA_MIPS3
+
+cflags-$(CONFIG_CPU_R4X00) += \
+ $(call set_gccflags,r4600,mips3,r4600,mips3,mips2) \
+ -Wa,--trap
+CHECKFLAGS-$(CONFIG_CPU_R4X00) += -D_MIPS_ISA=_MIPS_ISA_MIPS3
+
+cflags-$(CONFIG_CPU_TX49XX) += \
+ $(call set_gccflags,r4600,mips3,r4600,mips3,mips2) \
+ -Wa,--trap
+CHECKFLAGS-$(CONFIG_CPU_TX49XX) += -D_MIPS_ISA=_MIPS_ISA_MIPS3
+
+cflags-$(CONFIG_CPU_MIPS32_R1) += \
+ $(call set_gccflags,mips32,mips32,r4600,mips3,mips2) \
+ -Wa,--trap
+CHECKFLAGS-$(CONFIG_CPU_MIPS32_R1) += -D_MIPS_ISA=_MIPS_ISA_MIPS32
+
+cflags-$(CONFIG_CPU_MIPS32_R2) += \
+ $(call set_gccflags,mips32r2,mips32r2,r4600,mips3,mips2) \
+ -Wa,--trap
+CHECKFLAGS-$(CONFIG_CPU_MIPS32_R2) += -D_MIPS_ISA=_MIPS_ISA_MIPS32
+
+cflags-$(CONFIG_CPU_MIPS64_R1) += \
+ $(call set_gccflags,mips64,mips64,r4600,mips3,mips2) \
+ -Wa,--trap
+CHECKFLAGS-$(CONFIG_CPU_MIPS64_R1) += -D_MIPS_ISA=_MIPS_ISA_MIPS64
+
+cflags-$(CONFIG_CPU_MIPS64_R2) += \
+ $(call set_gccflags,mips64r2,mips64r2,r4600,mips3,mips2) \
-Wa,--trap
-cflags-$(CONFIG_CPU_NEVADA) += $(call cc-option,-march=rm5200,-march=r5000) \
+CHECKFLAGS-$(CONFIG_CPU_MIPS64_R2) += -D_MIPS_ISA=_MIPS_ISA_MIPS64
+
+cflags-$(CONFIG_CPU_R5000) += \
+ $(call set_gccflags,r5000,mips4,r5000,mips4,mips2) \
-Wa,--trap
-cflags-$(CONFIG_CPU_RM7000) += $(call cc-option,-march=rm7000,-march=r5000) \
+CHECKFLAGS-$(CONFIG_CPU_R5000) += -D_MIPS_ISA=_MIPS_ISA_MIPS4
+
+cflags-$(CONFIG_CPU_R5432) += \
+ $(call set_gccflags,r5400,mips4,r5000,mips4,mips2) \
+ -Wa,--trap
+CHECKFLAGS-$(CONFIG_CPU_R5432) += -D_MIPS_ISA=_MIPS_ISA_MIPS4
+
+cflags-$(CONFIG_CPU_NEVADA) += \
+ $(call set_gccflags,rm5200,mips4,r5000,mips4,mips2) \
+ -Wa,--trap
+CHECKFLAGS-$(CONFIG_CPU_NEVADA) += -D_MIPS_ISA=_MIPS_ISA_MIPS4
+
+cflags-$(CONFIG_CPU_RM7000) += \
+ $(call set_gccflags,rm7000,mips4,r5000,mips4,mips2) \
+ -Wa,--trap
+CHECKFLAGS-$(CONFIG_CPU_RM7000) += -D_MIPS_ISA=_MIPS_ISA_MIPS4
+
+cflags-$(CONFIG_CPU_RM9000) += \
+ $(call set_gccflags,rm9000,mips4,r5000,mips4,mips2) \
-Wa,--trap
-cflags-$(CONFIG_CPU_RM9000) += $(call cc-option,-march=rm9000,-march=r5000) \
+CHECKFLAGS-$(CONFIG_CPU_RM9000) += -D_MIPS_ISA=_MIPS_ISA_MIPS4
+
+
+cflags-$(CONFIG_CPU_SB1) += \
+ $(call set_gccflags,sb1,mips64,r5000,mips4,mips2) \
-Wa,--trap
-cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-march=sb1,-march=r5000) \
+CHECKFLAGS-$(CONFIG_CPU_SB1) += -D_MIPS_ISA=_MIPS_ISA_MIPS64
+
+cflags-$(CONFIG_CPU_R8000) += \
+ $(call set_gccflags,r8000,mips4,r8000,mips4,mips2) \
-Wa,--trap
-cflags-$(CONFIG_CPU_R8000) += -march=r8000 -Wa,--trap
-cflags-$(CONFIG_CPU_R10000) += $(call cc-option,-march=r10000,-march=r8000) \
+CHECKFLAGS-$(CONFIG_CPU_R8000) += -D_MIPS_ISA=_MIPS_ISA_MIPS4
+
+cflags-$(CONFIG_CPU_R10000) += \
+ $(call set_gccflags,r10000,mips4,r8000,mips4,mips2) \
-Wa,--trap
+CHECKFLAGS-$(CONFIG_CPU_R10000) += -D_MIPS_ISA=_MIPS_ISA_MIPS4
ifdef CONFIG_CPU_SB1
ifdef CONFIG_SB1_PASS_1_WORKAROUNDS
ifdef CONFIG_SGI_IP27
core-$(CONFIG_SGI_IP27) += arch/mips/sgi-ip27/
cflags-$(CONFIG_SGI_IP27) += -Iinclude/asm-mips/mach-ip27
+ifdef CONFIG_BUILD_ELF64
ifdef CONFIG_MAPPED_KERNEL
load-$(CONFIG_SGI_IP27) += 0xc00000004001c000
OBJCOPYFLAGS := --change-addresses=0x3fffffff80000000
load-$(CONFIG_SGI_IP27) += 0xa80000000001c000
OBJCOPYFLAGS := --change-addresses=0x57ffffff80000000
endif
+else
+ifdef CONFIG_MAPPED_KERNEL
+load-$(CONFIG_SGI_IP27) += 0xffffffffc001c000
+OBJCOPYFLAGS := --change-addresses=0xc000000080000000
+dataoffset-$(CONFIG_SGI_IP27) += 0x01000000
+else
+load-$(CONFIG_SGI_IP27) += 0xffffffff8001c000
+OBJCOPYFLAGS := --change-addresses=0xa800000080000000
+endif
+endif
endif
#
LDFLAGS += -m $(ld-emul)
-ifdef CONFIG_MIPS
-CHECKFLAGS += $(shell $(CC) $(CFLAGS) -dM -E -xc /dev/null | \
- egrep -vw '__GNUC_(MAJOR|MINOR|PATCHLEVEL)__' | \
- sed -e 's/^\#define /-D/' -e "s/ /='/" -e "s/$$/'/")
-ifdef CONFIG_64BIT
-CHECKFLAGS += -m64
-endif
-endif
-
OBJCOPYFLAGS += --remove-section=.reginfo
#
git://git.onelab.eu / linux-2.6.git / blobdiff