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* [glibc/maskray/grte] Work around clang assembler error with bnd by itself on a line
@ 2021-08-27 23:22 Fangrui Song
0 siblings, 0 replies; only message in thread
From: Fangrui Song @ 2021-08-27 23:22 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=edeaa900586bf18ca0a049188db9294a4a2e22c4
commit edeaa900586bf18ca0a049188db9294a4a2e22c4
Author: Stan Shebs <stanshebs@google.com>
Date: Wed Feb 7 12:55:59 2018 -0800
Work around clang assembler error with bnd by itself on a line
Diff:
---
sysdeps/x86_64/dl-trampoline.S | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/sysdeps/x86_64/dl-trampoline.S b/sysdeps/x86_64/dl-trampoline.S
index ef1425cbb9..a32916211b 100644
--- a/sysdeps/x86_64/dl-trampoline.S
+++ b/sysdeps/x86_64/dl-trampoline.S
@@ -45,7 +45,8 @@
#ifdef __ILP32__
# define PRESERVE_BND_REGS_PREFIX
#else
-# ifdef HAVE_MPX_SUPPORT
+/* clang integrated assembler does not like "bnd" by itself on a line. */
+# if defined(HAVE_MPX_SUPPORT) && !defined(__clang__)
# define PRESERVE_BND_REGS_PREFIX bnd
# else
# define PRESERVE_BND_REGS_PREFIX .byte 0xf2
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