git: 66ba742d2e6c - main - Allow use of the arm64 unnamed register form

The branch main has been updated by andrew:

URL: https://cgit.FreeBSD.org/src/commit/?id=66ba742d2e6c950611fa3d557512133b0216daa7

commit 66ba742d2e6c950611fa3d557512133b0216daa7
Author:     Andrew Turner <andrew@FreeBSD.org>
AuthorDate: 2022-06-29 16:34:41 +0000
Commit:     Andrew Turner <andrew@FreeBSD.org>
CommitDate: 2022-06-29 16:50:04 +0000

    Allow use of the arm64 unnamed register form
    
    On arm64 all registers have a name that encodes op0, op1, CRn, CRm, and
    op2 that are used to encode the register in the instruction. As some
    registers we need to access may not be supportedby older compilers, or
    are only supported when specific extensions are enabled support this
    alternative form.
    
    Sponsored by:   The FreeBSD Foundation
---
 sys/arm64/include/armreg.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/sys/arm64/include/armreg.h b/sys/arm64/include/armreg.h
index 02f45d66efde..726248a0916b 100644
--- a/sys/arm64/include/armreg.h
+++ b/sys/arm64/include/armreg.h
@@ -57,6 +57,12 @@
 #define	MRS_REG(reg)							\
     __MRS_REG(reg##_op0, reg##_op1, reg##_CRn, reg##_CRm, reg##_op2)
 
+#define	__MRS_REG_ALT_NAME(op0, op1, crn, crm, op2)			\
+    S##op0##_##op1##_C##crn##_C##crm##_##op2
+#define	_MRS_REG_ALT_NAME(op0, op1, crn, crm, op2)			\
+    __MRS_REG_ALT_NAME(op0, op1, crn, crm, op2)
+#define	MRS_REG_ALT_NAME(reg)						\
+    _MRS_REG_ALT_NAME(reg##_op0, reg##_op1, reg##_CRn, reg##_CRm, reg##_op2)
 
 
 #define	READ_SPECIALREG(reg)						\