[PATCH 7/9] xen/arm64: head: Rework PRINT() to work when the string is not withing +/- 1MB

[Julien Grall <julien@xxxxxxx>]

From: Julien Grall <jgrall@xxxxxxxxxx>

The instruction ADR is able to load an address of a symbol that is
within the range +/- 1 MB of the instruction.

While today Xen is quite small (~1MB), it could grow up to 2MB in the
current setup. So there is no guarantee that the instruction can
load the string address (stored in rodata).

So replace the instruction ADR with the pseudo-instruction ADR_L
which is able to handle symbol within the range +/- 4GB.

Signed-off-by: Julien Grall <jgrall@xxxxxxxxxx>
---
 xen/arch/arm/arm64/head.S | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/arch/arm/arm64/head.S b/xen/arch/arm/arm64/head.S
index c9e2e36506d9..38f896bdb8e2 100644
--- a/xen/arch/arm/arm64/head.S
+++ b/xen/arch/arm/arm64/head.S
@@ -90,7 +90,7 @@
  */
 #define PRINT(_s)          \
         mov   x3, lr ;     \
-        adr   x0, 98f ;    \
+        adr_l x0, 98f ;    \
         bl    puts    ;    \
         mov   lr, x3 ;     \
         RODATA_STR(98, _s)
-- 
2.40.1