Patch from Jeffrey Baitis <baitisj@evolution.com> for mips arch tuning.

diff --git a/Rules.mak b/Rules.mak
index eeb0a8d..1b7b9fc 100644 (file)
--- a/Rules.mak
+++ b/Rules.mak
@@ -127,6 +127,15 @@ ifeq ($(strip $(TARGET_ARCH)),arm)
        CPU_CFLAGS-$(CONFIG_ARM_XSCALE)+=-march=armv4 -Wa,-mcpu=xscale
 endif
 
+ifeq ($(strip $(TARGET_ARCH)),mips)
+       CPU_CFLAGS-$(CONFIG_MIPS_ISA_1)+=-mips1
+       CPU_CFLAGS-$(CONFIG_MIPS_ISA_2)+=-mips2 -mtune=mips2
+       CPU_CFLAGS-$(CONFIG_MIPS_ISA_3)+=-mips3 -mtune=mips3
+       CPU_CFLAGS-$(CONFIG_MIPS_ISA_4)+=-mips4 -mtune=mips4
+       CPU_CFLAGS-$(CONFIG_MIPS_ISA_MIPS32)+=-mips32 -mtune=mips32
+       CPU_CFLAGS-$(CONFIG_MIPS_ISA_MIPS64)+=-mips64 -mtune=mips32
+endif
+
 ifeq ($(strip $(TARGET_ARCH)),sh)
        OPTIMIZATION+=-fstrict-aliasing
        OPTIMIZATION+= $(call check_gcc,-mprefergot,)

diff --git a/extra/Configs/Config.mips b/extra/Configs/Config.mips
index 777c238..273e874 100644 (file)
--- a/extra/Configs/Config.mips
+++ b/extra/Configs/Config.mips
@@ -20,3 +20,39 @@ config ARCH_LDFLAGS
 config LIBGCC_CFLAGS
        string
 
+choice
+       prompt "Target Processor Architecture"
+       default CONFIG_MIPS_ISA_1
+       help
+         This selects the instruction set architecture of your MIPS CPU. This
+         information is used for optimizing purposes. To build a library that
+         will run on any MIPS CPU, you can specify "Generic (MIPS I)" here.
+         If you pick anything other than "Generic (MIPS I)," there is no
+         guarantee that uClibc will even run on anything other than the
+         selected processor type.
+
+         You should probably select the MIPS ISA that best matches the
+         CPU you will be using on your device. uClibc will be tuned
+         for that architecture.
+
+         If you don't know what to do, choose "Generic (MIPS I)"
+
+config CONFIG_MIPS_ISA_1
+       bool "Generic (MIPS I)"
+
+config CONFIG_MIPS_ISA_2
+       bool "MIPS II"
+
+config CONFIG_MIPS_ISA_3
+       bool "MIPS III"
+
+config CONFIG_MIPS_ISA_4
+       bool "MIPS IV"
+
+config CONFIG_MIPS_ISA_MIPS32
+       bool "MIPS32"
+
+config CONFIG_MIPS_ISA_MIPS64
+       bool "MIPS64"
+
+endchoice