[PATCH 2/3] arch/tile: implement arch_ptrace using user_regset on tilegx

[Simon Marchi]

This patch changes arch_ptrace on tilegx so that it uses the user_regset
to implement the PTRACE_GETREGS and PTRACE_SETREGS operations.

The ifdefs and the old code can be removed when user_regset support for
the older architectures is there.

Signed-off-by: Simon Marchi <simon.mar...@polymtl.ca>
---
 arch/tile/kernel/ptrace.c |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/arch/tile/kernel/ptrace.c b/arch/tile/kernel/ptrace.c
index 0e68d06..9435dd1 100644
--- a/arch/tile/kernel/ptrace.c
+++ b/arch/tile/kernel/ptrace.c
@@ -196,18 +196,28 @@ long arch_ptrace(struct task_struct *child, long request,
                break;
 
        case PTRACE_GETREGS:  /* Get all registers from the child. */
+#ifdef __tilegx__
+               ret = copy_regset_to_user(child, &tile_user_regset_view, 
REGSET_GPR,
+                                         0, sizeof(struct pt_regs), datap);
+#else /* __tilegx__ */
                if (copy_to_user(datap, getregs(child, &copyregs),
                                 sizeof(struct pt_regs)) == 0) {
                        ret = 0;
                }
+#endif /* __tilegx__ */
                break;
 
        case PTRACE_SETREGS:  /* Set all registers in the child. */
+#ifdef __tilegx__
+               ret = copy_regset_from_user(child, &tile_user_regset_view, 
REGSET_GPR,
+                                           0, sizeof(struct pt_regs), datap);
+#else /* __tilegx__ */
                if (copy_from_user(&copyregs, datap,
                                   sizeof(struct pt_regs)) == 0) {
                        putregs(child, &copyregs);
                        ret = 0;
                }
+#endif /* __tilegx__ */
                break;
 
        case PTRACE_GETFPREGS:  /* Get the child FPU state. */
-- 
1.7.1

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