From: Chuck Ebbert <76306.1226@compuserve.com>
To: Linus Torvalds <torvalds@osdl.org>
Cc: Andrew Morton <akpm@osdl.org>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: [patch] i386: let signal handlers set the resume flag
Date: Tue, 21 Feb 2006 05:16:09 -0500 [thread overview]
Message-ID: <200602210519_MC3-1-B8DF-2A98@compuserve.com> (raw)
Allow signal handlers to set the RF bit in EFLAGS. This lets a
simple debugger using SIGTRAP skip one instruction after returning
from a signal.
Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com>
--- 2.6.16-rc4-nb.orig/arch/i386/kernel/signal.c
+++ 2.6.16-rc4-nb/arch/i386/kernel/signal.c
@@ -123,7 +123,8 @@ restore_sigcontext(struct pt_regs *regs,
err |= __get_user(tmp, &sc->seg); \
loadsegment(seg,tmp); }
-#define FIX_EFLAGS (X86_EFLAGS_AC | X86_EFLAGS_OF | X86_EFLAGS_DF | \
+#define FIX_EFLAGS (X86_EFLAGS_AC | X86_EFLAGS_RF | \
+ X86_EFLAGS_OF | X86_EFLAGS_DF | \
X86_EFLAGS_TF | X86_EFLAGS_SF | X86_EFLAGS_ZF | \
X86_EFLAGS_AF | X86_EFLAGS_PF | X86_EFLAGS_CF)
--
Chuck
"Equations are the Devil's sentences." --Stephen Colbert
reply other threads:[~2006-02-21 10:19 UTC|newest]
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