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-rw-r--r--arch/um/sys-i386/signal.c58
1 files changed, 0 insertions, 58 deletions
diff --git a/arch/um/sys-i386/signal.c b/arch/um/sys-i386/signal.c
index 1cbf95f6858a..187ea27536bd 100644
--- a/arch/um/sys-i386/signal.c
+++ b/arch/um/sys-i386/signal.c
@@ -13,9 +13,6 @@
13#include "sigcontext.h" 13#include "sigcontext.h"
14#include "registers.h" 14#include "registers.h"
15#include "mode.h" 15#include "mode.h"
16
17#ifdef CONFIG_MODE_SKAS
18
19#include "skas.h" 16#include "skas.h"
20 17
21void copy_sc(union uml_pt_regs *regs, void *from) 18void copy_sc(union uml_pt_regs *regs, void *from)
@@ -108,61 +105,6 @@ int copy_sc_to_user_skas(struct sigcontext __user *to, struct _fpstate __user *t
108 return copy_to_user(to, &sc, sizeof(sc)) || 105 return copy_to_user(to, &sc, sizeof(sc)) ||
109 copy_to_user(to_fp, fpregs, sizeof(fpregs)); 106 copy_to_user(to_fp, fpregs, sizeof(fpregs));
110} 107}
111#endif
112
113#ifdef CONFIG_MODE_TT
114
115/* These copy a sigcontext to/from userspace. They copy the fpstate pointer,
116 * blowing away the old, good one. So, that value is saved, and then restored
117 * after the sigcontext copy. In copy_from, the variable holding the saved
118 * fpstate pointer, and the sigcontext that it should be restored to are both
119 * in the kernel, so we can just restore using an assignment. In copy_to, the
120 * saved pointer is in the kernel, but the sigcontext is in userspace, so we
121 * copy_to_user it.
122 */
123int copy_sc_from_user_tt(struct sigcontext *to, struct sigcontext __user *from,
124 int fpsize)
125{
126 struct _fpstate *to_fp;
127 struct _fpstate __user *from_fp;
128 unsigned long sigs;
129 int err;
130
131 to_fp = to->fpstate;
132 sigs = to->oldmask;
133 err = copy_from_user(to, from, sizeof(*to));
134 from_fp = to->fpstate;
135 to->oldmask = sigs;
136 to->fpstate = to_fp;
137 if(to_fp != NULL)
138 err |= copy_from_user(to_fp, from_fp, fpsize);
139 return err;
140}
141
142int copy_sc_to_user_tt(struct sigcontext __user *to, struct _fpstate __user *fp,
143 struct sigcontext *from, int fpsize, unsigned long sp)
144{
145 struct _fpstate __user *to_fp;
146 struct _fpstate *from_fp;
147 int err;
148
149 to_fp = (fp ? fp : (struct _fpstate __user *) (to + 1));
150 from_fp = from->fpstate;
151 err = copy_to_user(to, from, sizeof(*to));
152
153 /* The SP in the sigcontext is the updated one for the signal
154 * delivery. The sp passed in is the original, and this needs
155 * to be restored, so we stick it in separately.
156 */
157 err |= copy_to_user(&SC_SP(to), &sp, sizeof(sp));
158
159 if(from_fp != NULL){
160 err |= copy_to_user(&to->fpstate, &to_fp, sizeof(to->fpstate));
161 err |= copy_to_user(to_fp, from_fp, fpsize);
162 }
163 return err;
164}
165#endif
166 108
167static int copy_sc_from_user(struct pt_regs *to, void __user *from) 109static int copy_sc_from_user(struct pt_regs *to, void __user *from)
168{ 110{