Clang's integrated assembler only accepts UAL syntax, rewrite the
instructions that were changed by RVCTv2.1. The document "Assembly
language changes after RVCTv2.1" was very helpful.
.syntax unified
directive is added, since -masm-syntax-unified is unreliable for older
but supported versions of GCC. See also:
commit fe09d9c641 ("ARM: 8852/1: uaccess: use unified assembler language syntax")
Link: https://developer.arm.com/documentation/dui0473/c/writing-arm-assembly-language/assembly-language-changes-after-rvctv2-1
Link: https://github.com/ClangBuiltLinux/linux/issues/1271
Reported-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
7c182ebab9