Discussion:
[PATCH] ARM: always enable AEABI for ARMv6+
Russell King
2017-07-20 09:18:19 UTC
Permalink
Always enable AEABI for ARMv6+, as these use the double-word exclusives
which must be passed an even register to avoid errors such as:

/tmp/ccG2rCwe.s:905: Error: even register required -- `ldrexd r5,r6,[r7]'
/tmp/ccG2rCwe.s:909: Error: even register required -- `strexd sl,r3,r4,[r7]'

Signed-off-by: Russell King <rmk+***@armlinux.org.uk>
---
arch/arm/Kconfig | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 270ab2549def..edb88d430b24 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1542,7 +1542,6 @@ config THUMB2_KERNEL
bool "Compile the kernel in Thumb-2 mode" if !CPU_THUMBONLY
depends on (CPU_V7 || CPU_V7M) && !CPU_V6 && !CPU_V6K
default y if CPU_THUMBONLY
- select AEABI
select ARM_ASM_UNIFIED
select ARM_UNWIND
help
@@ -1605,7 +1604,8 @@ config ARM_PATCH_IDIV
code to do integer division.

config AEABI
- bool "Use the ARM EABI to compile the kernel"
+ bool "Use the ARM EABI to compile the kernel" if !CPU_V7 && !CPU_V7M && !CPU_V6 && !CPU_V6K
+ default CPU_V7 || CPU_V7M || CPU_V6 || CPU_V6K
help
This option allows for the kernel to be compiled using the latest
ARM ABI (aka EABI). This is only useful if you are using a user
--
2.7.4
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