| 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 @@ endif |
| 21 | ifeq ($(TARGET_ARCH),arm) |
| 22 | CPU_CFLAGS-$(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. |
| 183 | |
