linux-stable/arch/arm/include
Stefan Agner fe09d9c641 ARM: 8852/1: uaccess: use unified assembler language syntax
Convert the conditional infix to a postfix to make sure this inline
assembly is unified syntax. Since gcc assumes non-unified syntax
when emitting ARM instructions, make sure to define the syntax as
unified.

This allows to use LLVM's integrated assembler.

Additionally, for GCC ".syntax unified" for inline assembly.
When compiling non-Thumb2 GCC always emits a ".syntax divided"
at the beginning of the inline assembly which makes the
assembler fail. Since GCC 5 there is the -masm-syntax-unified
GCC option which make GCC assume unified syntax asm and hence
emits ".syntax unified" even in ARM mode. However, the option
is broken since GCC version 6 (see GCC PR88648 [1]). Work
around by adding ".syntax unified" as part of the inline
assembly.

[0] https://gcc.gnu.org/onlinedocs/gcc/ARM-Options.html#index-masm-syntax-unified
[1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88648

Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2019-04-23 17:20:52 +01:00
..
asm ARM: 8852/1: uaccess: use unified assembler language syntax 2019-04-23 17:20:52 +01:00
debug ARM: 8844/1: use unified assembler in assembly files 2019-02-26 11:26:07 +00:00
uapi/asm kbuild: force all architectures except um to include mandatory-y 2019-03-17 12:56:32 +09:00