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[RFC,3/4] arm64: turn "broken gas inst" into real config option

Message ID 1541583608-26375-4-git-send-email-vladimir.murzin@arm.com (mailing list archive)
State RFC
Headers show
Series Minor improvements over handling dependency on GAS | expand

Commit Message

Vladimir Murzin Nov. 7, 2018, 9:40 a.m. UTC 
So it is available everywhere and there is no need to keep
CONFIG_ARM64 workaround ;)

Cc: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
---
 arch/arm64/Kconfig  | 3 +++
 arch/arm64/Makefile | 9 ++-------
 2 files changed, 5 insertions(+), 7 deletions(-)
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Patch

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 7978aee..86fc357 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -287,6 +287,9 @@  config ARCH_SUPPORTS_UPROBES
 config ARCH_PROC_KCORE_TEXT
 	def_bool y
 
+config BROKEN_GAS_INST
+	def_bool y if !$(as-instr,1:\n.inst 0\n.rept . - 1b\n\nnop\n.endr\n)
+
 source "arch/arm64/Kconfig.platforms"
 
 menu "Bus support"
diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile
index 3054757..9860d3a 100644
--- a/arch/arm64/Makefile
+++ b/arch/arm64/Makefile
@@ -32,17 +32,12 @@  endif
 
 KBUILD_DEFCONFIG := defconfig
 
-ifeq ($(CONFIG_ARM64), y)
-brokengasinst := $(call as-instr,1:\n.inst 0\n.rept . - 1b\n\nnop\n.endr\n,,-DCONFIG_BROKEN_GAS_INST=1)
-
-  ifneq ($(brokengasinst),)
+ifeq ($(CONFIG_BROKEN_GAS_INST),y)
 $(warning Detected assembler with broken .inst; disassembly will be unreliable)
-  endif
 endif
 
-KBUILD_CFLAGS	+= -mgeneral-regs-only $(brokengasinst)
+KBUILD_CFLAGS	+= -mgeneral-regs-only
 KBUILD_CFLAGS	+= -fno-asynchronous-unwind-tables
-KBUILD_AFLAGS	+= $(brokengasinst)
 
 KBUILD_CFLAGS	+= $(call cc-option,-mabi=lp64)
 KBUILD_AFLAGS	+= $(call cc-option,-mabi=lp64)