[SPARC32]: Use regsets in arch_ptrace().

Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/arch/sparc/kernel/ptrace.c b/arch/sparc/kernel/ptrace.c
index 1c0d5363f72047c44a7065bd1f83d12dcbcaff7c..5b54f11f4e595a4530d81a84db43f75965c83b22 100644 (file)
--- a/arch/sparc/kernel/ptrace.c
+++ b/arch/sparc/kernel/ptrace.c
@@ -322,54 +322,39 @@ const struct user_regset_view *task_user_regset_view(struct task_struct *task)
 long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 {
        unsigned long addr2 = current->thread.kregs->u_regs[UREG_I4];
-       int i, ret;
+       const struct user_regset_view *view;
+       int ret;
+
+       view = task_user_regset_view(child);
 
        switch(request) {
        case PTRACE_GETREGS: {
                struct pt_regs __user *pregs = (struct pt_regs __user *) addr;
-               struct pt_regs *cregs = child->thread.kregs;
-
-               ret = -EFAULT;
-               if (!access_ok(VERIFY_WRITE, pregs, sizeof(struct pt_regs)))
-                       break;
 
-               __put_user(cregs->psr, (&pregs->psr));
-               __put_user(cregs->pc, (&pregs->pc));
-               __put_user(cregs->npc, (&pregs->npc));
-               __put_user(cregs->y, (&pregs->y));
-               for (i = 1; i < 16; i++)
-                       __put_user(cregs->u_regs[i], &pregs->u_regs[i - 1]);
-               ret = 0;
+               ret = copy_regset_to_user(child, view, REGSET_GENERAL,
+                                         32 * sizeof(u32),
+                                         4 * sizeof(u32),
+                                         &pregs->psr);
+               if (!ret)
+                       copy_regset_to_user(child, view, REGSET_GENERAL,
+                                           1 * sizeof(u32),
+                                           15 * sizeof(u32),
+                                           &pregs->u_regs[0]);
                break;
        }
 
        case PTRACE_SETREGS: {
                struct pt_regs __user *pregs = (struct pt_regs __user *) addr;
-               struct pt_regs *cregs = child->thread.kregs;
-               unsigned long psr, pc, npc, y;
-
-               /* Must be careful, tracing process can only set certain
-                * bits in the psr.
-                */
-               ret = -EFAULT;
-               if (!access_ok(VERIFY_READ, pregs, sizeof(struct pt_regs)))
-                       break;
 
-               __get_user(psr, (&pregs->psr));
-               __get_user(pc, (&pregs->pc));
-               __get_user(npc, (&pregs->npc));
-               __get_user(y, (&pregs->y));
-               psr &= PSR_ICC;
-               cregs->psr &= ~PSR_ICC;
-               cregs->psr |= psr;
-               if (!((pc | npc) & 3)) {
-                       cregs->pc = pc;
-                       cregs->npc =npc;
-               }
-               cregs->y = y;
-               for (i = 1; i < 16; i++)
-                       __get_user(cregs->u_regs[i], &pregs->u_regs[i-1]);
-               ret = 0;
+               ret = copy_regset_from_user(child, view, REGSET_GENERAL,
+                                           32 * sizeof(u32),
+                                           4 * sizeof(u32),
+                                           &pregs->psr);
+               if (!ret)
+                       copy_regset_from_user(child, view, REGSET_GENERAL,
+                                             1 * sizeof(u32),
+                                             15 * sizeof(u32),
+                                             &pregs->u_regs[0]);
                break;
        }
 
@@ -387,23 +372,23 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                };
                struct fps __user *fps = (struct fps __user *) addr;
 
-               ret = -EFAULT;
-               if (!access_ok(VERIFY_WRITE, fps, sizeof(struct fps)))
-                       break;
-
-               for (i = 0; i < 32; i++)
-                       __put_user(child->thread.float_regs[i], &fps->regs[i]);
-               __put_user(child->thread.fsr, (&fps->fsr));
-               __put_user(child->thread.fpqdepth, (&fps->fpqd));
-               __put_user(0, (&fps->flags));
-               __put_user(0, (&fps->extra));
-               for (i = 0; i < 16; i++) {
-                       __put_user(child->thread.fpqueue[i].insn_addr,
-                                  (&fps->fpq[i].insnaddr));
-                       __put_user(child->thread.fpqueue[i].insn,
-                                  &fps->fpq[i].insn);
+               ret = copy_regset_to_user(child, view, REGSET_FP,
+                                         0 * sizeof(u32),
+                                         32 * sizeof(u32),
+                                         &fps->regs[0]);
+               if (!ret)
+                       ret = copy_regset_to_user(child, view, REGSET_FP,
+                                                 33 * sizeof(u32),
+                                                 1 * sizeof(u32),
+                                                 &fps->fsr);
+
+               if (!ret) {
+                       if (__put_user(0, &fps->fpqd) ||
+                           __put_user(0, &fps->flags) ||
+                           __put_user(0, &fps->extra) ||
+                           clear_user(fps->fpq, sizeof(fps->fpq)))
+                               ret = -EFAULT;
                }
-               ret = 0;
                break;
        }
 
@@ -421,21 +406,15 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                };
                struct fps __user *fps = (struct fps __user *) addr;
 
-               ret = -EFAULT;
-               if (!access_ok(VERIFY_READ, fps, sizeof(struct fps)))
-                       break;
-
-               copy_from_user(&child->thread.float_regs[0], &fps->regs[0],
-                              (32 * sizeof(unsigned long)));
-               __get_user(child->thread.fsr, (&fps->fsr));
-               __get_user(child->thread.fpqdepth, (&fps->fpqd));
-               for (i = 0; i < 16; i++) {
-                       __get_user(child->thread.fpqueue[i].insn_addr,
-                                  (&fps->fpq[i].insnaddr));
-                       __get_user(child->thread.fpqueue[i].insn,
-                                  &fps->fpq[i].insn);
-               }
-               ret = 0;
+               ret = copy_regset_from_user(child, view, REGSET_FP,
+                                           0 * sizeof(u32),
+                                           32 * sizeof(u32),
+                                           &fps->regs[0]);
+               if (!ret)
+                       ret = copy_regset_from_user(child, view, REGSET_FP,
+                                                   33 * sizeof(u32),
+                                                   1 * sizeof(u32),
+                                                   &fps->fsr);
                break;
        }