vserver 2.0 rc7

[linux-2.6.git] / arch / um / sys-ppc / ptrace.c

diff --git a/arch/um/sys-ppc/ptrace.c b/arch/um/sys-ppc/ptrace.c
index a971366..8e71b47 100644 (file)
--- a/arch/um/sys-ppc/ptrace.c
+++ b/arch/um/sys-ppc/ptrace.c
@@ -8,6 +8,25 @@ int putreg(struct task_struct *child, unsigned long regno,
        return 0;
 }
 
+int poke_user(struct task_struct *child, long addr, long data)
+{
+       if ((addr & 3) || addr < 0)
+               return -EIO;
+
+       if (addr < MAX_REG_OFFSET)
+               return putreg(child, addr, data);
+
+       else if((addr >= offsetof(struct user, u_debugreg[0])) &&
+               (addr <= offsetof(struct user, u_debugreg[7]))){
+                 addr -= offsetof(struct user, u_debugreg[0]);
+                 addr = addr >> 2;
+                 if((addr == 4) || (addr == 5)) return -EIO;
+                 child->thread.arch.debugregs[addr] = data;
+                 return 0;
+       }
+       return -EIO;
+}
+
 unsigned long getreg(struct task_struct *child, unsigned long regno)
 {
        unsigned long retval = ~0UL;
@@ -16,6 +35,27 @@ unsigned long getreg(struct task_struct *child, unsigned long regno)
        return retval;
 }
 
+int peek_user(struct task_struct *child, long addr, long data)
+{
+       /* read the word at location addr in the USER area. */
+       unsigned long tmp;
+
+       if ((addr & 3) || addr < 0)
+               return -EIO;
+
+       tmp = 0;  /* Default return condition */
+       if(addr < MAX_REG_OFFSET){
+               tmp = getreg(child, addr);
+       }
+       else if((addr >= offsetof(struct user, u_debugreg[0])) &&
+               (addr <= offsetof(struct user, u_debugreg[7]))){
+               addr -= offsetof(struct user, u_debugreg[0]);
+               addr = addr >> 2;
+               tmp = child->thread.arch.debugregs[addr];
+       }
+       return put_user(tmp, (unsigned long *) data);
+}
+
 /*
  * Overrides for Emacs so that we follow Linus's tabbing style.
  * Emacs will notice this stuff at the end of the file and automatically