mirror of
https://github.com/openwrt/openwrt.git
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140 lines
3.4 KiB
Diff
140 lines
3.4 KiB
Diff
Add three new blind options to set use of Thumb mode:
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- COMPILE_IN_THUMB_MODE
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- if set, CFLAGS will contain -mthumb
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- if unset, the compiler's default is used
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- HAS_THUMB
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- CPUS with Thumb instruction set can select this
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- use of BX depends on this
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- FORCE_THUMB
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- CPUs that are Thumb-only must select this
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- this selects: HAS_THUMB, COMPILE_IN_THUMB_MODE and USE_BX
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Also, remove leading space in Rules.mak.
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Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
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Cc: Khem Raj <raj.khem@gmail.com>
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Cc: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Cc: Carmelo AMOROSO <carmelo.amoroso@st.com>
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---
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Rules.mak | 7 ++++---
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extra/Configs/Config.arm | 31 ++++++++++++++++++++++++++++---
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2 files changed, 32 insertions(+), 6 deletions(-)
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--- a/Rules.mak
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+++ b/Rules.mak
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@@ -351,9 +351,10 @@ ifeq ($(TARGET_ARCH),arm)
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CPU_CFLAGS-$(CONFIG_ARM_SA1100)+=-mtune=strongarm1100 -march=armv4
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CPU_CFLAGS-$(CONFIG_ARM_XSCALE)+=$(call check_gcc,-mtune=xscale,-mtune=strongarm110)
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CPU_CFLAGS-$(CONFIG_ARM_XSCALE)+=-march=armv5te -Wa,-mcpu=xscale
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- CPU_CFLAGS-$(CONFIG_ARM_IWMMXT)+=-march=iwmmxt -Wa,-mcpu=iwmmxt -mabi=iwmmxt
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- CPU_CFLAGS-$(CONFIG_ARM_CORTEX_M3)+=-mcpu=cortex-m3 -mthumb
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- CPU_CFLAGS-$(CONFIG_ARM_CORTEX_M1)+=-mcpu=cortex-m1 -mthumb
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+ CPU_CFLAGS-$(CONFIG_ARM_IWMMXT)+=-march=iwmmxt -Wa,-mcpu=iwmmxt -mabi=iwmmxt
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+ CPU_CFLAGS-$(CONFIG_ARM_CORTEX_M3)+=-mcpu=cortex-m3
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+ CPU_CFLAGS-$(CONFIG_ARM_CORTEX_M1)+=-mcpu=cortex-m1
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+ CPU_CFLAGS-$(COMPILE_IN_THUMB_MODE)+=-mthumb
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endif
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ifeq ($(TARGET_ARCH),mips)
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--- a/extra/Configs/Config.arm
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+++ b/extra/Configs/Config.arm
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@@ -64,70 +64,95 @@ config CONFIG_ARM710
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config CONFIG_ARM7TDMI
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bool "Arm 7TDMI"
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select ARCH_HAS_NO_MMU
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+ select HAS_THUMB
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config CONFIG_ARM720T
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bool "Arm 720T"
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select ARCH_HAS_MMU
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+ select HAS_THUMB
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config CONFIG_ARM920T
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bool "Arm 920T"
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select ARCH_HAS_MMU
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+ select HAS_THUMB
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config CONFIG_ARM922T
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bool "Arm 922T"
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select ARCH_HAS_MMU
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+ select HAS_THUMB
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config CONFIG_ARM926T
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bool "Arm 926T"
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select ARCH_HAS_MMU
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+ select HAS_THUMB
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config CONFIG_ARM10T
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bool "Arm 10T"
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select ARCH_HAS_MMU
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+ select HAS_THUMB
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config CONFIG_ARM1136JF_S
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bool "Arm 1136JF-S"
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select ARCH_HAS_MMU
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+ select HAS_THUMB
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config CONFIG_ARM1176JZ_S
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bool "Arm 1176JZ-S"
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select ARCH_HAS_MMU
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+ select HAS_THUMB
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config CONFIG_ARM1176JZF_S
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bool "Arm 1176JZF-S"
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select ARCH_HAS_MMU
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+ select HAS_THUMB
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config CONFIG_ARM_CORTEX_M3
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bool "Arm Cortex-M3"
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select ARCH_HAS_NO_MMU
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- select USE_BX
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+ select FORCE_THUMB
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config CONFIG_ARM_CORTEX_M1
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bool "Arm Cortex-M1"
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select ARCH_HAS_NO_MMU
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- select USE_BX
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+ select FORCE_THUMB
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config CONFIG_ARM_SA110
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bool "Intel StrongArm SA-110"
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select ARCH_HAS_MMU
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+ select HAS_THUMB
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config CONFIG_ARM_SA1100
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bool "Intel StrongArm SA-1100"
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select ARCH_HAS_MMU
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+ select HAS_THUMB
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config CONFIG_ARM_XSCALE
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bool "Intel Xscale"
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select ARCH_HAS_MMU
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+ select HAS_THUMB
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config CONFIG_ARM_IWMMXT
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bool "Intel Xscale With WMMX PXA27x"
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select ARCH_HAS_MMU
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+ select HAS_THUMB
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endchoice
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+config HAS_THUMB
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+ bool
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+
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+config FORCE_THUMB
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+ bool
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+ select HAS_THUMB
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+ select COMPILE_IN_THUMB_MODE
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+ select USE_BX
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+
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+config COMPILE_IN_THUMB_MODE
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+ bool
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+
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config USE_BX
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bool "Use BX in function return"
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default y
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- depends on !CONFIG_GENERIC_ARM && !CONFIG_ARM610 && !CONFIG_ARM710
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+ depends on HAS_THUMB
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help
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Use BX instruction for THUMB aware architectures.
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