svn commit: r316626 - head/sys/arm64/include

[Alexander Kabaev]

Author: kan
Date: Fri Apr  7 22:58:28 2017
New Revision: 316626
URL: https://svnweb.freebsd.org/changeset/base/316626

Log:
  Define 'lr' as x30 on aarch64
  
  GNU toolchain does not recognize LR as standard register alias,
  but clang does. Use of #define will work on both. Place the
  definition into central machine/asm.h instead of patching every
  affected file, as requested by plaftorm maintainers.
  
  Reviews by: andrew, emaste, imp
  Differential Revision:	https://reviews.freebsd.org/D10307

Modified:
  head/sys/arm64/include/asm.h

Modified: head/sys/arm64/include/asm.h
==============================================================================
--- head/sys/arm64/include/asm.h	Fri Apr  7 22:58:25 2017	(r316625)
+++ head/sys/arm64/include/asm.h	Fri Apr  7 22:58:28 2017	(r316626)
@@ -57,6 +57,9 @@
 #define	PIC_SYM(x,y)	x
 #endif
 
+/* Alias for link register x30 */
+#define	lr		x30
+
 /*
  * Sets the trap fault handler. The exception handler will return to the
  * address in the handler register on a data abort or the xzr register to