From c6901792f009cfd824707724b687e99edd4c8ecd Mon Sep 17 00:00:00 2001 From: Michael Brown Date: Sun, 5 Feb 2023 23:55:14 +0000 Subject: [build] Allow for per-architecture unprefixed constant operand modifier Over the years, the undocumented operand modifier used to produce the unprefixed constant values in __einfo_error() has varied from "%c0" to "%a0" in commit 1a77466 ("[build] Fix use of inline assembly on GCC 4.8 ARM64 builds") and back to "%c0" in commit 3fb3ffc ("[build] Fix use of inline assembly on GCC 8 ARM64 builds"), according to the evolving demands of the toolchain. LoongArch64 suffers from a similar issue: GCC 13 will allow either, but the currently released GCC 12 allows only the "%a0" form. Introduce a macro ASM_NO_PREFIX, defined in bits/compiler.h, to abstract away this difference and allow different architectures to use different operand modifiers. Signed-off-by: Michael Brown --- src/include/errno.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'src/include') diff --git a/src/include/errno.h b/src/include/errno.h index decde38ed..ac012a691 100644 --- a/src/include/errno.h +++ b/src/include/errno.h @@ -262,10 +262,10 @@ static inline void eplatform_discard ( int dummy __unused, ... ) {} ".balign 8\n\t" \ "\n1:\n\t" \ ".long ( 4f - 1b )\n\t" \ - ".long %c0\n\t" \ + ".long %" ASM_NO_PREFIX "0\n\t" \ ".long ( 2f - 1b )\n\t" \ ".long ( 3f - 1b )\n\t" \ - ".long %c1\n\t" \ + ".long %" ASM_NO_PREFIX "1\n\t" \ "\n2:\t.asciz \"" __einfo_desc ( einfo ) "\"\n\t" \ "\n3:\t.asciz \"" __FILE__ "\"\n\t" \ ".balign 8\n\t" \ -- cgit v1.2.3-55-g7522