From bda6117489ad3de5abfb008a8cb065c9059cd60c Mon Sep 17 00:00:00 2001 From: "Yann E. MORIN" Date: Sun, 9 Jan 2011 01:45:05 +0100 Subject: ARM: introduce blind options to select & force THUMB mode Add three new blind options to set use of Thumb mode: - COMPILE_IN_THUMB_MODE - if set, CFLAGS will contain -mthumb - if unset, the compiler's default is used - HAS_THUMB - CPUS with Thumb instruction set can select this - use of BX depends on this - FORCE_THUMB - CPUs that are Thumb-only must select this - this selects: HAS_THUMB, COMPILE_IN_THUMB_MODE and USE_BX Also, remove leading space in Rules.mak. Signed-off-by: "Yann E. MORIN" Cc: Khem Raj Cc: Bernhard Reutner-Fischer Cc: Carmelo AMOROSO Signed-off-by: Khem Raj --- extra/Configs/Config.arm | 31 ++++++++++++++++++++++++++++--- 1 file changed, 28 insertions(+), 3 deletions(-) (limited to 'extra') diff --git a/extra/Configs/Config.arm b/extra/Configs/Config.arm index dd63b807c..93038e9b2 100644 --- a/extra/Configs/Config.arm +++ b/extra/Configs/Config.arm @@ -64,70 +64,95 @@ config CONFIG_ARM710 config CONFIG_ARM7TDMI bool "Arm 7TDMI" select ARCH_HAS_NO_MMU + select HAS_THUMB config CONFIG_ARM720T bool "Arm 720T" select ARCH_HAS_MMU + select HAS_THUMB config CONFIG_ARM920T bool "Arm 920T" select ARCH_HAS_MMU + select HAS_THUMB config CONFIG_ARM922T bool "Arm 922T" select ARCH_HAS_MMU + select HAS_THUMB config CONFIG_ARM926T bool "Arm 926T" select ARCH_HAS_MMU + select HAS_THUMB config CONFIG_ARM10T bool "Arm 10T" select ARCH_HAS_MMU + select HAS_THUMB config CONFIG_ARM1136JF_S bool "Arm 1136JF-S" select ARCH_HAS_MMU + select HAS_THUMB config CONFIG_ARM1176JZ_S bool "Arm 1176JZ-S" select ARCH_HAS_MMU + select HAS_THUMB config CONFIG_ARM1176JZF_S bool "Arm 1176JZF-S" select ARCH_HAS_MMU + select HAS_THUMB config CONFIG_ARM_CORTEX_M3 bool "Arm Cortex-M3" select ARCH_HAS_NO_MMU - select USE_BX + select FORCE_THUMB config CONFIG_ARM_CORTEX_M1 bool "Arm Cortex-M1" select ARCH_HAS_NO_MMU - select USE_BX + select FORCE_THUMB config CONFIG_ARM_SA110 bool "Intel StrongArm SA-110" select ARCH_HAS_MMU + select HAS_THUMB config CONFIG_ARM_SA1100 bool "Intel StrongArm SA-1100" select ARCH_HAS_MMU + select HAS_THUMB config CONFIG_ARM_XSCALE bool "Intel Xscale" select ARCH_HAS_MMU + select HAS_THUMB config CONFIG_ARM_IWMMXT bool "Intel Xscale With WMMX PXA27x" select ARCH_HAS_MMU + select HAS_THUMB endchoice +config HAS_THUMB + bool + +config FORCE_THUMB + bool + select HAS_THUMB + select COMPILE_IN_THUMB_MODE + select USE_BX + +config COMPILE_IN_THUMB_MODE + bool + config USE_BX bool "Use BX in function return" default y - depends on !CONFIG_GENERIC_ARM && !CONFIG_ARM610 && !CONFIG_ARM710 + depends on HAS_THUMB help Use BX instruction for THUMB aware architectures. -- cgit v1.2.3