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Diffstat (limited to 'arch/mips')
-rw-r--r--arch/mips/Makefile208
1 files changed, 39 insertions, 169 deletions
diff --git a/arch/mips/Makefile b/arch/mips/Makefile
index c626dd5942f..9a69e0f0ab7 100644
--- a/arch/mips/Makefile
+++ b/arch/mips/Makefile
@@ -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
#
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-14 11:32:49 +0000