toolchain/uClibc/patches-0.9.32/920-remove_sub-arch_variants.patch

   1 Rely on the compiler to be correctly set up to generate
   2 appropriate code for the target variant.
   3
   4 This exposes the Thumb option, as it is no longer auto-selected.
   5 The "Use BX" no longer depends on supported CPU to be selected,
   6 so it now defaults to 'n' as it shall work by default on CPUs
   7 that do not have BX.
   8
   9 Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
  10 Cc: Khem Raj <raj.khem@gmail.com>
  11 Cc: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
  12 Cc: Carmelo AMOROSO <carmelo.amoroso@st.com>
  13 ---
  14  Rules.mak                |   19 -------
  15  extra/Configs/Config.arm |  125 ++--------------------------------------------
  16  2 files changed, 5 insertions(+), 139 deletions(-)
  17
  18 --- a/Rules.mak
  19 +++ b/Rules.mak
  20 @@ -335,25 +335,6 @@ ifeq ($(TARGET_ARCH),arm)
  21         OPTIMIZATION+=-fstrict-aliasing
  22         CPU_CFLAGS-$(ARCH_LITTLE_ENDIAN)+=-mlittle-endian
  23         CPU_CFLAGS-$(ARCH_BIG_ENDIAN)+=-mbig-endian
  24 -       CPU_CFLAGS-$(CONFIG_GENERIC_ARM)+=
  25 -       CPU_CFLAGS-$(CONFIG_ARM610)+=-mtune=arm610 -march=armv3
  26 -       CPU_CFLAGS-$(CONFIG_ARM710)+=-mtune=arm710 -march=armv3
  27 -       CPU_CFLAGS-$(CONFIG_ARM7TDMI)+=-mtune=arm7tdmi -march=armv4t
  28 -       CPU_CFLAGS-$(CONFIG_ARM720T)+=-mtune=arm7tdmi -march=armv4t
  29 -       CPU_CFLAGS-$(CONFIG_ARM920T)+=-mtune=arm9tdmi -march=armv4t
  30 -       CPU_CFLAGS-$(CONFIG_ARM922T)+=-mtune=arm9tdmi -march=armv4t
  31 -       CPU_CFLAGS-$(CONFIG_ARM926T)+=-mtune=arm9e -march=armv5te
  32 -       CPU_CFLAGS-$(CONFIG_ARM10T)+=-mtune=arm10tdmi -march=armv5t
  33 -       CPU_CFLAGS-$(CONFIG_ARM1136JF_S)+=-mtune=arm1136jf-s -march=armv6
  34 -       CPU_CFLAGS-$(CONFIG_ARM1176JZ_S)+=-mtune=arm1176jz-s -march=armv6
  35 -       CPU_CFLAGS-$(CONFIG_ARM1176JZF_S)+=-mtune=arm1176jzf-s -march=armv6
  36 -       CPU_CFLAGS-$(CONFIG_ARM_SA110)+=-mtune=strongarm110 -march=armv4
  37 -       CPU_CFLAGS-$(CONFIG_ARM_SA1100)+=-mtune=strongarm1100 -march=armv4
  38 -       CPU_CFLAGS-$(CONFIG_ARM_XSCALE)+=$(call check_gcc,-mtune=xscale,-mtune=strongarm110)
  39 -       CPU_CFLAGS-$(CONFIG_ARM_XSCALE)+=-march=armv5te -Wa,-mcpu=xscale
  40 -       CPU_CFLAGS-$(CONFIG_ARM_IWMMXT)+=-march=iwmmxt -Wa,-mcpu=iwmmxt -mabi=iwmmxt
  41 -       CPU_CFLAGS-$(CONFIG_ARM_CORTEX_M3)+=-mcpu=cortex-m3
  42 -       CPU_CFLAGS-$(CONFIG_ARM_CORTEX_M1)+=-mcpu=cortex-m1
  43         CPU_CFLAGS-$(COMPILE_IN_THUMB_MODE)+=-mthumb
  44  endif
  45
  46 --- a/extra/Configs/Config.arm
  47 +++ b/extra/Configs/Config.arm
  48 @@ -30,129 +30,14 @@ config CONFIG_ARM_EABI
  49
  50  endchoice
  51
  52 -choice
  53 -       prompt "Target Processor Type"
  54 -       default CONFIG_GENERIC_ARM
  55 -       help
  56 -         This is the processor type of your CPU. This information is used for
  57 -         optimizing purposes.  To build a library that will run on all ARMCPU
  58 -         types (albeit not optimally fast), you can specify "Generic Arm" here.
  59 -         If you pick anything other than "Generic Arm", there is no guarantee
  60 -         that uClibc will even run on anything other than the selected
  61 -         processor type.
  62 -
  63 -         Here are the settings recommended for greatest speed:
  64 -         - "Generic Arm" select this if your compiler is already setup to
  65 -           optimize things properly, or if you want to run on pretty much
  66 -           everything, or you just don't much care.
  67 -         - For anything else, pick the ARM core type that best matches the
  68 -           cpu you will be using on your device.
  69 -
  70 -         If you don't know what to do, choose "Generic Arm".
  71 -
  72 -config CONFIG_GENERIC_ARM
  73 -       bool "Generic Arm"
  74 -
  75 -config CONFIG_ARM610
  76 -       bool "Arm 610"
  77 -       select ARCH_HAS_MMU
  78 -
  79 -config CONFIG_ARM710
  80 -       bool "Arm 710"
  81 -       select ARCH_HAS_MMU
  82 -
  83 -config CONFIG_ARM7TDMI
  84 -       bool "Arm 7TDMI"
  85 -       select ARCH_HAS_NO_MMU
  86 -       select HAS_THUMB
  87 -
  88 -config CONFIG_ARM720T
  89 -       bool "Arm 720T"
  90 -       select ARCH_HAS_MMU
  91 -       select HAS_THUMB
  92 -
  93 -config CONFIG_ARM920T
  94 -       bool "Arm 920T"
  95 -       select ARCH_HAS_MMU
  96 -       select HAS_THUMB
  97 -
  98 -config CONFIG_ARM922T
  99 -       bool "Arm 922T"
 100 -       select ARCH_HAS_MMU
 101 -       select HAS_THUMB
 102 -
 103 -config CONFIG_ARM926T
 104 -       bool "Arm 926T"
 105 -       select ARCH_HAS_MMU
 106 -       select HAS_THUMB
 107 -
 108 -config CONFIG_ARM10T
 109 -       bool "Arm 10T"
 110 -       select ARCH_HAS_MMU
 111 -       select HAS_THUMB
 112 -
 113 -config CONFIG_ARM1136JF_S
 114 -       bool "Arm 1136JF-S"
 115 -       select ARCH_HAS_MMU
 116 -       select HAS_THUMB
 117 -
 118 -config CONFIG_ARM1176JZ_S
 119 -       bool "Arm 1176JZ-S"
 120 -       select ARCH_HAS_MMU
 121 -       select HAS_THUMB
 122 -
 123 -config CONFIG_ARM1176JZF_S
 124 -       bool "Arm 1176JZF-S"
 125 -       select ARCH_HAS_MMU
 126 -       select HAS_THUMB
 127 -
 128 -config CONFIG_ARM_CORTEX_M3
 129 -       bool "Arm Cortex-M3"
 130 -       select ARCH_HAS_NO_MMU
 131 -       select FORCE_THUMB
 132 -
 133 -config CONFIG_ARM_CORTEX_M1
 134 -       bool "Arm Cortex-M1"
 135 -       select ARCH_HAS_NO_MMU
 136 -       select FORCE_THUMB
 137 -
 138 -config CONFIG_ARM_SA110
 139 -       bool "Intel StrongArm SA-110"
 140 -       select ARCH_HAS_MMU
 141 -       select HAS_THUMB
 142 -
 143 -config CONFIG_ARM_SA1100
 144 -       bool "Intel StrongArm SA-1100"
 145 -       select ARCH_HAS_MMU
 146 -       select HAS_THUMB
 147 -
 148 -config CONFIG_ARM_XSCALE
 149 -       bool "Intel Xscale"
 150 -       select ARCH_HAS_MMU
 151 -       select HAS_THUMB
 152 -
 153 -config CONFIG_ARM_IWMMXT
 154 -       bool "Intel Xscale With WMMX PXA27x"
 155 -       select ARCH_HAS_MMU
 156 -       select HAS_THUMB
 157 -
 158 -endchoice
 159 -
 160 -config HAS_THUMB
 161 -       bool
 162 -
 163 -config FORCE_THUMB
 164 -       bool
 165 -       select HAS_THUMB
 166 -       select COMPILE_IN_THUMB_MODE
 167 -       select USE_BX
 168 -
 169  config COMPILE_IN_THUMB_MODE
 170 -       bool
 171 +       bool "Build using Thumb mode"
 172 +       select USE_BX
 173 +       help
 174 +         Say 'y' here to force building uClibc in thumb mode.
 175 +         Say 'n' to use your compiler's default mode.
 176
 177  config USE_BX
 178         bool "Use BX in function return"
 179 -       default y
 180 -       depends on HAS_THUMB
 181         help
 182           Use BX instruction for THUMB aware architectures.