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authorChuck Ebbert <76306.1226@compuserve.com>2006-03-23 05:59:40 -0500
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-23 10:38:05 -0500
commit8bed51cd17464433a0c77afc8a5150e51d3da37d (patch)
tree7ffd751ba256f1f88e5888f624cb6e08c2a95bd7 /arch
parent3c36c6aa4aa1b3483c6a0370028608367426f58e (diff)
[PATCH] i386: let signal handlers set the resume flag
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> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/i386/kernel/signal.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/i386/kernel/signal.c b/arch/i386/kernel/signal.c
index 963616d364ec..608eac4a7324 100644
--- a/arch/i386/kernel/signal.c
+++ b/arch/i386/kernel/signal.c
@@ -123,7 +123,8 @@ restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc, int *peax
123 err |= __get_user(tmp, &sc->seg); \ 123 err |= __get_user(tmp, &sc->seg); \
124 loadsegment(seg,tmp); } 124 loadsegment(seg,tmp); }
125 125
126#define FIX_EFLAGS (X86_EFLAGS_AC | X86_EFLAGS_OF | X86_EFLAGS_DF | \ 126#define FIX_EFLAGS (X86_EFLAGS_AC | X86_EFLAGS_RF | \
127 X86_EFLAGS_OF | X86_EFLAGS_DF | \
127 X86_EFLAGS_TF | X86_EFLAGS_SF | X86_EFLAGS_ZF | \ 128 X86_EFLAGS_TF | X86_EFLAGS_SF | X86_EFLAGS_ZF | \
128 X86_EFLAGS_AF | X86_EFLAGS_PF | X86_EFLAGS_CF) 129 X86_EFLAGS_AF | X86_EFLAGS_PF | X86_EFLAGS_CF)
129 130