x86_64: use save/loadsegment in ia32 compat

Use savesegment and loadsegment consistently in ia32 compat code.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86/ia32/ia32_aout.c b/arch/x86/ia32/ia32_aout.c
index a0e1dbe..127ec3f 100644 (file)
--- a/arch/x86/ia32/ia32_aout.c
+++ b/arch/x86/ia32/ia32_aout.c
@@ -85,8 +85,10 @@ static void dump_thread32(struct pt_regs *regs, struct user32 *dump)
        dump->regs.ax = regs->ax;
        dump->regs.ds = current->thread.ds;
        dump->regs.es = current->thread.es;
-       asm("movl %%fs,%0" : "=r" (fs)); dump->regs.fs = fs;
-       asm("movl %%gs,%0" : "=r" (gs)); dump->regs.gs = gs;
+       savesegment(fs, fs);
+       dump->regs.fs = fs;
+       savesegment(gs, gs);
+       dump->regs.gs = gs;
        dump->regs.orig_ax = regs->orig_ax;
        dump->regs.ip = regs->ip;
        dump->regs.cs = regs->cs;
@@ -430,8 +432,9 @@ beyond_if:
        current->mm->start_stack =
                (unsigned long)create_aout_tables((char __user *)bprm->p, bprm);
        /* start thread */
-       asm volatile("movl %0,%%fs" :: "r" (0)); \
-       asm volatile("movl %0,%%es; movl %0,%%ds": :"r" (__USER32_DS));
+       loadsegment(fs, 0);
+       loadsegment(ds, __USER32_DS);
+       loadsegment(es, __USER32_DS);
        load_gs_index(0);
        (regs)->ip = ex.a_entry;
        (regs)->sp = current->mm->start_stack;

diff --git a/arch/x86/ia32/ia32_signal.c b/arch/x86/ia32/ia32_signal.c
index 20af4c7..f1a2ac7 100644 (file)
--- a/arch/x86/ia32/ia32_signal.c
+++ b/arch/x86/ia32/ia32_signal.c
@@ -206,7 +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); }
 
@@ -235,7 +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);
 
@@ -355,14 +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);
@@ -498,8 +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;
@@ -591,8 +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;

diff --git a/include/asm-x86/elf.h b/include/asm-x86/elf.h
index 7be4733..acbf345 100644 (file)
--- a/include/asm-x86/elf.h
+++ b/include/asm-x86/elf.h
@@ -148,8 +148,9 @@ do {                                                \
 
 static inline void start_ia32_thread(struct pt_regs *regs, u32 ip, u32 sp)
 {
-       asm volatile("movl %0,%%fs" :: "r" (0));
-       asm volatile("movl %0,%%es; movl %0,%%ds" : : "r" (__USER32_DS));
+       loadsegment(fs, 0);
+       loadsegment(ds, __USER32_DS);
+       loadsegment(es, __USER32_DS);
        load_gs_index(0);
        regs->ip = ip;
        regs->sp = sp;