x86_64: use save/loadsegment in ia32 compat

[linux-2.6-omap-h63xx.git] / arch / x86 / ia32 / ia32_signal.c

diff --git a/arch/x86/ia32/ia32_signal.c b/arch/x86/ia32/ia32_signal.c
index cb3856a18c8544e1ffe722d33a7713439043829d..f1a2ac777fafa0a6b6f14b8296eae650eb45e6ee 100644 (file)
--- a/arch/x86/ia32/ia32_signal.c
+++ b/arch/x86/ia32/ia32_signal.c
@@ -36,6 +36,11 @@
 
 #define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
 
+#define FIX_EFLAGS     (X86_EFLAGS_AC | X86_EFLAGS_OF | \
+                        X86_EFLAGS_DF | X86_EFLAGS_TF | X86_EFLAGS_SF | \
+                        X86_EFLAGS_ZF | X86_EFLAGS_AF | X86_EFLAGS_PF | \
+                        X86_EFLAGS_CF)
+
 asmlinkage int do_signal(struct pt_regs *regs, sigset_t *oldset);
 void signal_fault(struct pt_regs *regs, void __user *frame, char *where);
 
@@ -201,7 +206,7 @@ struct rt_sigframe
        { unsigned int cur;                                             \
          unsigned short pre;                                           \
          err |= __get_user(pre, &sc->seg);                             \
-         asm volatile("movl %%" #seg ",%0" : "=r" (cur));              \
+         savesegment(seg, cur);                                        \
          pre |= mask;                                                  \
          if (pre != cur) loadsegment(seg, pre); }
 
@@ -230,7 +235,7 @@ static int ia32_restore_sigcontext(struct pt_regs *regs,
         */
        err |= __get_user(gs, &sc->gs);
        gs |= 3;
-       asm("movl %%gs,%0" : "=r" (oldgs));
+       savesegment(gs, oldgs);
        if (gs != oldgs)
                load_gs_index(gs);
 
@@ -248,7 +253,7 @@ static int ia32_restore_sigcontext(struct pt_regs *regs,
        regs->ss |= 3;
 
        err |= __get_user(tmpflags, &sc->flags);
-       regs->flags = (regs->flags & ~0x40DD5) | (tmpflags & 0x40DD5);
+       regs->flags = (regs->flags & ~FIX_EFLAGS) | (tmpflags & FIX_EFLAGS);
        /* disable syscall checks */
        regs->orig_ax = -1;
 
@@ -350,14 +355,13 @@ static int ia32_setup_sigcontext(struct sigcontext_ia32 __user *sc,
 {
        int tmp, err = 0;
 
-       tmp = 0;
-       __asm__("movl %%gs,%0" : "=r"(tmp): "0"(tmp));
+       savesegment(gs, tmp);
        err |= __put_user(tmp, (unsigned int __user *)&sc->gs);
-       __asm__("movl %%fs,%0" : "=r"(tmp): "0"(tmp));
+       savesegment(fs, tmp);
        err |= __put_user(tmp, (unsigned int __user *)&sc->fs);
-       __asm__("movl %%ds,%0" : "=r"(tmp): "0"(tmp));
+       savesegment(ds, tmp);
        err |= __put_user(tmp, (unsigned int __user *)&sc->ds);
-       __asm__("movl %%es,%0" : "=r"(tmp): "0"(tmp));
+       savesegment(es, tmp);
        err |= __put_user(tmp, (unsigned int __user *)&sc->es);
 
        err |= __put_user((u32)regs->di, &sc->di);
@@ -493,8 +497,8 @@ int ia32_setup_frame(int sig, struct k_sigaction *ka,
        regs->dx = 0;
        regs->cx = 0;
 
-       asm volatile("movl %0,%%ds" :: "r" (__USER32_DS));
-       asm volatile("movl %0,%%es" :: "r" (__USER32_DS));
+       loadsegment(ds, __USER32_DS);
+       loadsegment(es, __USER32_DS);
 
        regs->cs = __USER32_CS;
        regs->ss = __USER32_DS;
@@ -515,7 +519,6 @@ int ia32_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
                        compat_sigset_t *set, struct pt_regs *regs)
 {
        struct rt_sigframe __user *frame;
-       struct exec_domain *ed = current_thread_info()->exec_domain;
        void __user *restorer;
        int err = 0;
 
@@ -538,8 +541,7 @@ int ia32_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
        if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
                goto give_sigsegv;
 
-       err |= __put_user((ed && ed->signal_invmap && sig < 32
-                          ? ed->signal_invmap[sig] : sig), &frame->sig);
+       err |= __put_user(sig, &frame->sig);
        err |= __put_user(ptr_to_compat(&frame->info), &frame->pinfo);
        err |= __put_user(ptr_to_compat(&frame->uc), &frame->puc);
        err |= copy_siginfo_to_user32(&frame->info, info);
@@ -588,8 +590,8 @@ int ia32_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
        regs->dx = (unsigned long) &frame->info;
        regs->cx = (unsigned long) &frame->uc;
 
-       asm volatile("movl %0,%%ds" :: "r" (__USER32_DS));
-       asm volatile("movl %0,%%es" :: "r" (__USER32_DS));
+       loadsegment(ds, __USER32_DS);
+       loadsegment(es, __USER32_DS);
 
        regs->cs = __USER32_CS;
        regs->ss = __USER32_DS;