Module Name: src
Committed By: rin
Date: Mon May 30 14:48:09 UTC 2022
Modified Files:
src/sys/arch/powerpc/include: cpu.h
src/sys/arch/powerpc/powerpc: powerpc_machdep.c
Log Message:
Export CPU capability of unaligned memory access to userland
as machdep.no_unaligned sysctl(7) variable.
This will be used for ld.so.conf in order to provide strictly-
aligned versions of libc routines.
To generate a diff of this commit:
cvs rdiff -u -r1.121 -r1.122 src/sys/arch/powerpc/include/cpu.h
cvs rdiff -u -r1.85 -r1.86 src/sys/arch/powerpc/powerpc/powerpc_machdep.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/powerpc/include/cpu.h
diff -u src/sys/arch/powerpc/include/cpu.h:1.121 src/sys/arch/powerpc/include/cpu.h:1.122
--- src/sys/arch/powerpc/include/cpu.h:1.121 Mon May 30 14:05:36 2022
+++ src/sys/arch/powerpc/include/cpu.h Mon May 30 14:48:08 2022
@@ -1,4 +1,4 @@
-/* $NetBSD: cpu.h,v 1.121 2022/05/30 14:05:36 rin Exp $ */
+/* $NetBSD: cpu.h,v 1.122 2022/05/30 14:48:08 rin Exp $ */
/*
* Copyright (C) 1999 Wolfgang Solfrank.
@@ -511,5 +511,6 @@ void __syncicache(void *, size_t);
#define CPU_BOOTED_KERNEL 10 /* string: kernel we booted */
#define CPU_EXECPROT 11 /* bool: PROT_EXEC works */
#define CPU_FPU 12
+#define CPU_NO_UNALIGNED 13 /* No HW support for unaligned access */
#endif /* _POWERPC_CPU_H_ */
Index: src/sys/arch/powerpc/powerpc/powerpc_machdep.c
diff -u src/sys/arch/powerpc/powerpc/powerpc_machdep.c:1.85 src/sys/arch/powerpc/powerpc/powerpc_machdep.c:1.86
--- src/sys/arch/powerpc/powerpc/powerpc_machdep.c:1.85 Fri May 20 19:34:22 2022
+++ src/sys/arch/powerpc/powerpc/powerpc_machdep.c Mon May 30 14:48:08 2022
@@ -1,4 +1,4 @@
-/* $NetBSD: powerpc_machdep.c,v 1.85 2022/05/20 19:34:22 andvar Exp $ */
+/* $NetBSD: powerpc_machdep.c,v 1.86 2022/05/30 14:48:08 rin Exp $ */
/*
* Copyright (C) 1995, 1996 Wolfgang Solfrank.
@@ -32,7 +32,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: powerpc_machdep.c,v 1.85 2022/05/20 19:34:22 andvar Exp $");
+__KERNEL_RCSID(0, "$NetBSD: powerpc_machdep.c,v 1.86 2022/05/30 14:48:08 rin Exp $");
#ifdef _KERNEL_OPT
#include "opt_altivec.h"
@@ -40,6 +40,7 @@ __KERNEL_RCSID(0, "$NetBSD: powerpc_mach
#include "opt_modular.h"
#include "opt_multiprocessor.h"
#include "opt_ppcarch.h"
+#include "opt_ppcopts.h"
#endif
#include <sys/param.h>
@@ -301,6 +302,17 @@ SYSCTL_SETUP(sysctl_machdep_setup, "sysc
#endif
NULL, 0,
CTL_MACHDEP, CPU_FPU, CTL_EOL);
+ sysctl_createv(clog, 0, NULL, NULL,
+ CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
+ CTLTYPE_INT, "no_unaligned", NULL,
+ NULL,
+#if defined(PPC_NO_UNALIGNED)
+ 1,
+#else
+ 0,
+#endif
+ NULL, 0,
+ CTL_MACHDEP, CPU_NO_UNALIGNED, CTL_EOL);
}
/*
