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sh: gcc4 support.

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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>
This commit is contained in:
Stuart Menefy
2006-11-21 11:16:57 +09:00
committed by Paul Mundt
parent 53644087a6
commit f0bc814cfb
8 changed files with 78 additions and 64 deletions
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18
arch/sh/kernel/cpu/sh4/fpu.c
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@@ -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;
}