Module Name: src
Committed By: yamt
Date: Wed Nov 18 12:29:22 UTC 2009
Modified Files:
src/sys/sys: ucontext.h
Log Message:
comment which bits of uc_flags are used by MD code.
+ * if your port needs more MD bits, please try to choose bits from _UC_MD
+ * first, rather than picking random unused bits.
To generate a diff of this commit:
cvs rdiff -u -r1.11 -r1.12 src/sys/sys/ucontext.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/sys/ucontext.h
diff -u src/sys/sys/ucontext.h:1.11 src/sys/sys/ucontext.h:1.12
--- src/sys/sys/ucontext.h:1.11 Wed Oct 15 06:51:21 2008
+++ src/sys/sys/ucontext.h Wed Nov 18 12:29:22 2009
@@ -1,4 +1,4 @@
-/* $NetBSD: ucontext.h,v 1.11 2008/10/15 06:51:21 wrstuden Exp $ */
+/* $NetBSD: ucontext.h,v 1.12 2009/11/18 12:29:22 yamt Exp $ */
/*-
* Copyright (c) 1999, 2003 The NetBSD Foundation, Inc.
@@ -57,6 +57,22 @@
#define _UC_STACK 0x02 /* valid uc_stack */
#define _UC_CPU 0x04 /* valid GPR context in uc_mcontext */
#define _UC_FPU 0x08 /* valid FPU context in uc_mcontext */
+#define _UC_MD 0x40070020 /* MD bits. see below */
+
+/*
+ * _UC_MD includes:
+ * _UC_SETSTACK 0x00010000 (many ports) and 0x00020000 (arm)
+ * _UC_CLRSTACK 0x00020000 (many ports) and 0x00040000 (arm)
+ * _UC_POWERPC_VEC 0x00010000 (powerpc)
+ * _UC_M68K_UC_USER 0x40000000 (m68k)
+ * _UC_UNIQUE 0x00000020 (alpha)
+ * _UC_ARM_VFP 0x00010000 (arm)
+ * _UC_VM 0x00040000 (i386)
+ * _UC_FXSAVE 0x00000020 (i386)
+ *
+ * if your port needs more MD bits, please try to choose bits from _UC_MD
+ * first, rather than picking random unused bits.
+ */
#ifdef _KERNEL
struct lwp;
