git: 433ab94b30af - stable/12 - arm cpufunc: partially undo a9c91abd3bd4 for older gas

The branch stable/12 has been updated by dim:

URL: https://cgit.FreeBSD.org/src/commit/?id=433ab94b30af2c2d3d8d5faec3d3c41d87ed028b

commit 433ab94b30af2c2d3d8d5faec3d3c41d87ed028b
Author:     Dimitry Andric <dim@FreeBSD.org>
AuthorDate: 2021-12-21 14:59:51 +0000
Commit:     Dimitry Andric <dim@FreeBSD.org>
CommitDate: 2021-12-21 14:59:51 +0000

    arm cpufunc: partially undo a9c91abd3bd4 for older gas
    
    Instead of the "udf" mnemonic, which is not supported by gas 2.17.50,
    use a .word directive encoding the instruction directly.
    
    Direct commit to stable/12, since that still has gas 2.17.50.
---
 sys/arm/include/cpufunc.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sys/arm/include/cpufunc.h b/sys/arm/include/cpufunc.h
index 00fc1ba5bba1..cc002bf7fcd6 100644
--- a/sys/arm/include/cpufunc.h
+++ b/sys/arm/include/cpufunc.h
@@ -54,7 +54,7 @@
 static __inline void
 breakpoint(void)
 {
-	__asm("udf        0xffff");
+	__asm(".word      0xe7ffffff"); /* udf 0xffff */
 }
 
 struct cpu_functions {
@@ -369,7 +369,7 @@ breakpoint(void)
 	 * This matches the instruction used by GDB for software
 	 * breakpoints.
 	 */
-	__asm("udf        0xfdee");
+	__asm(".word      0xe7ffdefe"); /* udf 0xfdee */
 }
 
 #endif	/* _KERNEL */