[Xen-devel] [PATCH v2] xen/arm: unbreak arm64 build for older toolchains

[Stefano Stabellini <sstabellini@xxxxxxxxxx>]

Commit 4941bfb "xen/arm64: macros: Introduce an assembly macro to alias
x30" moved

  lr      .req    x30

to macros.h. A later patch (1396dab "xen/arm64: head: Don't clobber
x30/lr in the macro PRINT") started to use "lr" in head.S, however, it
didn't add an #include macros.h to head.S. This commit fixes it.

The lack of alias breaks the build with
gcc-linaro-5.3.1-2016.05-x86_64_aarch64-linux-gnu. The alias was added
later to binutiles 2.29 in 2017.

Signed-off-by: Stefano Stabellini <stefanos@xxxxxxxxxx>
---
Changes in v2:
- improve commit message

diff --git a/xen/arch/arm/arm64/head.S b/xen/arch/arm/arm64/head.S
index 28efe9230c..50cff08756 100644
--- a/xen/arch/arm/arm64/head.S
+++ b/xen/arch/arm/arm64/head.S
@@ -25,6 +25,7 @@
 #include <asm/early_printk.h>
 #include <efi/efierr.h>
 #include <asm/arm64/efibind.h>
+#include <asm/arm64/macros.h>
 
 #define PT_PT     0xf7f /* nG=1 AF=1 SH=11 AP=01 NS=1 ATTR=111 T=1 P=1 */
 #define PT_MEM    0xf7d /* nG=1 AF=1 SH=11 AP=01 NS=1 ATTR=111 T=0 P=1 */

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