sh: gcc4 support.

This fixes up the kernel for gcc4. The existing exception handlers
needed some wrapping for pt_regs access, acessing the registers
via a RELOC_HIDE() pointer.

The strcpy() issues popped up here too, so add -ffreestanding and
kill off the symbol export.

Signed-off-by: Stuart Menefy <stuart.menefy@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 10 insertions, 8 deletions

diff --git a/arch/sh/kernel/cpu/sh4/fpu.c b/arch/sh/kernel/cpu/sh4/fpu.c
index f486c07e10e2..378b488237c9 100644
--- a/arch/sh/kernel/cpu/sh4/fpu.c
+++ b/arch/sh/kernel/cpu/sh4/fpu.c
@@ -296,16 +296,17 @@ ieee_fpe_handler (struct pt_regs *regs)
 }
 
 asmlinkage void
-do_fpu_error(unsigned long r4, unsigned long r5, unsigned long r6, unsigned long r7,
-             struct pt_regs regs)
+do_fpu_error(unsigned long r4, unsigned long r5, unsigned long r6,
+             unsigned long r7, struct pt_regs __regs)
 {
+        struct pt_regs *regs = RELOC_HIDE(&__regs, 0);
         struct task_struct *tsk = current;
 
-        if (ieee_fpe_handler (&regs))
+        if (ieee_fpe_handler(regs))
                 return;
 
-        regs.pc += 2;
-        save_fpu(tsk, &regs);
+        regs->pc += 2;
+        save_fpu(tsk, regs);
         tsk->thread.trap_no = 11;
         tsk->thread.error_code = 0;
         force_sig(SIGFPE, tsk);
@@ -313,12 +314,13 @@ do_fpu_error(unsigned long r4, unsigned long r5, unsigned long r6, unsigned long
 
 asmlinkage void
 do_fpu_state_restore(unsigned long r4, unsigned long r5, unsigned long r6,
-                     unsigned long r7, struct pt_regs regs)
+                     unsigned long r7, struct pt_regs __regs)
 {
+        struct pt_regs *regs = RELOC_HIDE(&__regs, 0);
         struct task_struct *tsk = current;
 
-        grab_fpu(&regs);
-        if (!user_mode(&regs)) {
+        grab_fpu(regs);
+        if (!user_mode(regs)) {
                 printk(KERN_ERR "BUG: FPU is used in kernel mode.\n");
                 return;
         }