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Commit 59b3e8e9 authored by Ralf Baechle's avatar Ralf Baechle
Browse files

[MIPS] Makefile crapectomy.


    
Dump all the ridiculously complicated stuff that was needed support
compilers older and newer than 3.0.
    
Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
Signed-off-by: default avatarThiemo Seufer <ths@networkno.de>
parent 0cea043b
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+39 −169
Original line number Diff line number Diff line
@@ -12,10 +12,6 @@
# 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 :=

#
@@ -38,12 +34,10 @@ else
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
@@ -52,40 +46,28 @@ ifdef CONFIG_CROSSCOMPILE
CROSS_COMPILE		:= $(tool-prefix)
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_32BIT
gas-abi			= 32
ld-emul			= $(32bit-emul)
vmlinux-32		= vmlinux
vmlinux-64		= vmlinux.64

cflags-y		+= -mabi=32
endif

ifdef CONFIG_64BIT
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


#
# GCC uses -G 0 -mabicalls -fpic as default.  We don't want PIC in the kernel
# code since it only slows down the whole thing.  At some point we might make
@@ -107,162 +89,44 @@ MODFLAGS += -mlong-calls
# carefully avoid to add it redundantly because gcc 3.3/3.4 complains
# when fed the toolchain default!
#
cflags-$(CONFIG_CPU_BIG_ENDIAN)		+= $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' && echo -EB)
cflags-$(CONFIG_CPU_LITTLE_ENDIAN)	+= $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL)
cflags-$(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_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)	+= \
			$(call set_gccflags,r3000,mips1,r3000,mips1,mips1)
CHECKFLAGS-$(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)	+= \
			$(call set_gccflags,mips32,mips32,r4600,mips3,mips2) \
cflags-$(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)	+= $(call cc-option,-march=mips32,-mips2 -mtune=r4600) \
			-Wa,-mips32 -Wa,--trap
cflags-$(CONFIG_CPU_MIPS32_R2)	+= $(call cc-option,-march=mips32r2,-mips2 -mtune=r4600) \
			-Wa,-mips32r2 -Wa,--trap
cflags-$(CONFIG_CPU_MIPS64_R1)	+= $(call cc-option,-march=mips64,-mips2 -mtune=r4600) \
			-Wa,-mips64 -Wa,--trap
cflags-$(CONFIG_CPU_MIPS64_R2)	+= $(call cc-option,-march=mips64r2,-mips2 -mtune=r4600 ) \
			-Wa,-mips64r2 -Wa,--trap
cflags-$(CONFIG_CPU_R5000)	+= -march=r5000 -Wa,--trap
cflags-$(CONFIG_CPU_R5432)	+= $(call cc-options,-march=r5400,-march=r5000) \
			-Wa,--trap
CHECKFLAGS-$(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)	+= \
			$(call set_gccflags,mips64r2,mips64r2,r4600,mips3,mips2) \
			-Wa,--trap
CHECKFLAGS-$(CONFIG_CPU_MIPS64_R2)	+= -D_MIPS_ISA=_MIPS_ISA_MIPS64

cflags-$(CONFIG_CPU_R5000)	+= \
			$(call set_gccflags,r5000,mips4,r5000,mips4,mips2) \
			-Wa,--trap
CHECKFLAGS-$(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)	+= \
			$(call set_gccflags,rm5200,mips4,r5000,mips4,mips2) \
cflags-$(CONFIG_CPU_NEVADA)	+= $(call cc-options,-march=rm5200,-march=r5000) \
			-Wa,--trap
CHECKFLAGS-$(CONFIG_CPU_NEVADA)	+= -D_MIPS_ISA=_MIPS_ISA_MIPS4

cflags-$(CONFIG_CPU_RM7000)	+= \
			$(call set_gccflags,rm7000,mips4,r5000,mips4,mips2) \
cflags-$(CONFIG_CPU_RM7000)	+= $(call cc-option,-march=rm7000,-march=r5000) \
			-Wa,--trap
CHECKFLAGS-$(CONFIG_CPU_RM7000)	+= -D_MIPS_ISA=_MIPS_ISA_MIPS4

cflags-$(CONFIG_CPU_RM9000)	+= \
			$(call set_gccflags,rm9000,mips4,r5000,mips4,mips2) \
			-Wa,--trap
CHECKFLAGS-$(CONFIG_CPU_RM9000)	+= -D_MIPS_ISA=_MIPS_ISA_MIPS4


cflags-$(CONFIG_CPU_SB1)	+= \
			$(call set_gccflags,sb1,mips64,r5000,mips4,mips2) \
cflags-$(CONFIG_CPU_RM9000)	+= $(call cc-option,-march=rm9000,-march=r5000) \
			-Wa,--trap
CHECKFLAGS-$(CONFIG_CPU_SB1)	+= -D_MIPS_ISA=_MIPS_ISA_MIPS64

cflags-$(CONFIG_CPU_R8000)	+= \
			$(call set_gccflags,r8000,mips4,r8000,mips4,mips2) \
cflags-$(CONFIG_CPU_SB1)	+= $(call cc-option,-march=sb1,-march=r5000) \
			-Wa,--trap
CHECKFLAGS-$(CONFIG_CPU_R8000)	+= -D_MIPS_ISA=_MIPS_ISA_MIPS4

cflags-$(CONFIG_CPU_R10000)	+= \
			$(call set_gccflags,r10000,mips4,r8000,mips4,mips2) \
cflags-$(CONFIG_CPU_R8000)	+= -march=r8000 -Wa,--trap
cflags-$(CONFIG_CPU_R10000)	+= $(call cc-option,-march=r10000,-march=r8000) \
			-Wa,--trap
CHECKFLAGS-$(CONFIG_CPU_R10000)	+= -D_MIPS_ISA=_MIPS_ISA_MIPS4

ifdef CONFIG_CPU_SB1
ifdef CONFIG_SB1_PASS_1_WORKAROUNDS
@@ -748,6 +612,12 @@ CFLAGS += $(cflags-y)

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/$$/"/')
endif

OBJCOPYFLAGS		+= --remove-section=.reginfo

#