Module Name: src
Committed By: kamil
Date: Mon Jan 16 21:19:14 UTC 2017
Modified Files:
src/sys/arch/i386/include: userret.h
Log Message:
Allow to mix single-step with hardware assisted watchpoints on i386
This case needs new handling in trap recognition.
Sponsored by <The NetBSD Foundation>
To generate a diff of this commit:
cvs rdiff -u -r1.12 -r1.13 src/sys/arch/i386/include/userret.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/arch/i386/include/userret.h
diff -u src/sys/arch/i386/include/userret.h:1.12 src/sys/arch/i386/include/userret.h:1.13
--- src/sys/arch/i386/include/userret.h:1.12 Thu Dec 15 12:04:18 2016
+++ src/sys/arch/i386/include/userret.h Mon Jan 16 21:19:14 2017
@@ -1,4 +1,4 @@
-/* $NetBSD: userret.h,v 1.12 2016/12/15 12:04:18 kamil Exp $ */
+/* $NetBSD: userret.h,v 1.13 2017/01/16 21:19:14 kamil Exp $ */
/*-
* Copyright (c) 1998, 2000 The NetBSD Foundation, Inc.
@@ -79,12 +79,9 @@ userret(struct lwp *l)
mi_userret(l);
/*
- * Never mix debug registers with single step, while technically
- * possible on x86 CPUs, it adds unnecessary complications we do
- * not want to handle it.
+ * Allow to mix debug registers with single step.
*/
- if ((l->l_md.md_regs->tf_eflags & PSL_T) == 0 &&
- l->l_md.md_flags & MDL_X86_HW_WATCHPOINTS)
+ if (l->l_md.md_flags & MDL_X86_HW_WATCHPOINTS)
set_x86_hw_watchpoints(l);
else
clear_x86_hw_watchpoints();
