[PATCH] powerpc: enable PPC_PTRACE_[GS]ETREGS on ppc32

I have tested PPC_PTRACE_GETREGS and PPC_PTRACE_SETREGS on umview.

I do not understand why historically these tags has been defined as
PPC_PTRACE_GETREGS and PPC_PTRACE_SETREGS instead of simply
PTRACE_[GS]ETREGS. The other "originality" is that the address must be
put into the "addr" field instead of the "data" field as stated in the
manual.

Signed-off-by: renzo davoli <renzo@cs.unibo.it>
Signed-off-by: Paul Mackerras <paulus@samba.org>

diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
index 4a677d1..5563e2e 100644 (file)
--- a/arch/powerpc/kernel/ptrace.c
+++ b/arch/powerpc/kernel/ptrace.c
@@ -404,7 +404,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                ret = ptrace_detach(child, data);
                break;
 
-#ifdef CONFIG_PPC64
        case PPC_PTRACE_GETREGS: { /* Get GPRs 0 - 31. */
                int i;
                unsigned long *reg = &((unsigned long *)child->thread.regs)[0];
@@ -468,7 +467,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                }
                break;
        }
-#endif /* CONFIG_PPC64 */
 
 #ifdef CONFIG_ALTIVEC
        case PTRACE_GETVRREGS:

diff --git a/include/asm-powerpc/ptrace.h b/include/asm-powerpc/ptrace.h
index 9c550b3..dc4cb9c 100644 (file)
--- a/include/asm-powerpc/ptrace.h
+++ b/include/asm-powerpc/ptrace.h
@@ -229,13 +229,13 @@ do {                                                                            \
 #define PTRACE_GET_DEBUGREG    25
 #define PTRACE_SET_DEBUGREG    26
 
-#ifdef __powerpc64__
 /* Additional PTRACE requests implemented on PowerPC. */
 #define PPC_PTRACE_GETREGS     0x99    /* Get GPRs 0 - 31 */
 #define PPC_PTRACE_SETREGS     0x98    /* Set GPRs 0 - 31 */
 #define PPC_PTRACE_GETFPREGS   0x97    /* Get FPRs 0 - 31 */
 #define PPC_PTRACE_SETFPREGS   0x96    /* Set FPRs 0 - 31 */
 
+#ifdef __powerpc64__
 /* Calls to trace a 64bit program from a 32bit program */
 #define PPC_PTRACE_PEEKTEXT_3264 0x95
 #define PPC_PTRACE_PEEKDATA_3264 0x94