[patch] i386: let signal handlers set the resume flag

[Chuck Ebbert]

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@xxxxxxxxxxxxxx>

--- 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
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