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Diffstat (limited to 'arch/x86/kernel/signal.c')
-rw-r--r--arch/x86/kernel/signal.c41
1 files changed, 16 insertions, 25 deletions
diff --git a/arch/x86/kernel/signal.c b/arch/x86/kernel/signal.c
index 7fc78b019815..8562387c75a7 100644
--- a/arch/x86/kernel/signal.c
+++ b/arch/x86/kernel/signal.c
@@ -50,27 +50,23 @@
50# define FIX_EFLAGS __FIX_EFLAGS 50# define FIX_EFLAGS __FIX_EFLAGS
51#endif 51#endif
52 52
53#define COPY(x) { \ 53#define COPY(x) do { \
54 get_user_ex(regs->x, &sc->x); \ 54 get_user_ex(regs->x, &sc->x); \
55} 55} while (0)
56 56
57#define COPY_SEG(seg) { \ 57#define GET_SEG(seg) ({ \
58 unsigned short tmp; \ 58 unsigned short tmp; \
59 get_user_ex(tmp, &sc->seg); \ 59 get_user_ex(tmp, &sc->seg); \
60 regs->seg = tmp; \ 60 tmp; \
61} 61})
62 62
63#define COPY_SEG_CPL3(seg) { \ 63#define COPY_SEG(seg) do { \
64 unsigned short tmp; \ 64 regs->seg = GET_SEG(seg); \
65 get_user_ex(tmp, &sc->seg); \ 65} while (0)
66 regs->seg = tmp | 3; \
67}
68 66
69#define GET_SEG(seg) { \ 67#define COPY_SEG_CPL3(seg) do { \
70 unsigned short tmp; \ 68 regs->seg = GET_SEG(seg) | 3; \
71 get_user_ex(tmp, &sc->seg); \ 69} while (0)
72 loadsegment(seg, tmp); \
73}
74 70
75static int 71static int
76restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc, 72restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc,
@@ -86,7 +82,7 @@ restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc,
86 get_user_try { 82 get_user_try {
87 83
88#ifdef CONFIG_X86_32 84#ifdef CONFIG_X86_32
89 GET_SEG(gs); 85 set_user_gs(regs, GET_SEG(gs));
90 COPY_SEG(fs); 86 COPY_SEG(fs);
91 COPY_SEG(es); 87 COPY_SEG(es);
92 COPY_SEG(ds); 88 COPY_SEG(ds);
@@ -138,12 +134,7 @@ setup_sigcontext(struct sigcontext __user *sc, void __user *fpstate,
138 put_user_try { 134 put_user_try {
139 135
140#ifdef CONFIG_X86_32 136#ifdef CONFIG_X86_32
141 { 137 put_user_ex(get_user_gs(regs), (unsigned int __user *)&sc->gs);
142 unsigned int tmp;
143
144 savesegment(gs, tmp);
145 put_user_ex(tmp, (unsigned int __user *)&sc->gs);
146 }
147 put_user_ex(regs->fs, (unsigned int __user *)&sc->fs); 138 put_user_ex(regs->fs, (unsigned int __user *)&sc->fs);
148 put_user_ex(regs->es, (unsigned int __user *)&sc->es); 139 put_user_ex(regs->es, (unsigned int __user *)&sc->es);
149 put_user_ex(regs->ds, (unsigned int __user *)&sc->ds); 140 put_user_ex(regs->ds, (unsigned int __user *)&sc->ds);