[PATCH] ppc64: Add definitions for new PTRACE calls

- Add PTRACE_GET_DEBUGREG/PTRACE_SET_DEBUGREG. The definition is
as follows:

/*
* Get or set a debug register. The first 16 are DABR registers and the
* second 16 are IABR registers.
*/
#define PTRACE_GET_DEBUGREG 25
#define PTRACE_SET_DEBUGREG 26

DABR == data breakpoint and IABR = instruction breakpoint in IBM
speak. We could split out the IABR into 2 more ptrace calls but I
figured there was no need and 16 DABR registers should be more
than enough (POWER4/POWER5 have one).

- Add 2 new SIGTRAP si_codes: TRAP_HWBKPT and TRAP_BRANCH. I couldnt
find any standards on either of these so I copied what ia64 is
doing. Again this might be better placed in
include/asm-generic/siginfo.h

Signed-off-by: Anton Blanchard <[e-mail]>
Signed-off-by: Paul Mackerras <[e-mail]>

include/asm-powerpc/siginfo.h

···
 
 #include <asm-generic/siginfo.h>
 
+/*
+ * SIGTRAP si_codes
+ */
+#define TRAP_BRANCH	(__SI_FAULT|3)	/* process taken branch trap */
+#define TRAP_HWBKPT	(__SI_FAULT|4)	/* hardware breakpoint or watchpoint */
+#undef NSIGTRAP
+#define NSIGTRAP	4
+
 #endif	/* _ASM_POWERPC_SIGINFO_H */

include/asm-ppc/ptrace.h

···
 #define PTRACE_GETEVRREGS	20
 #define PTRACE_SETEVRREGS	21
 
+/*
+ * Get or set a debug register. The first 16 are DABR registers and the
+ * second 16 are IABR registers.
+ */
+#define PTRACE_GET_DEBUGREG	25
+#define PTRACE_SET_DEBUGREG	26
+
 #endif

include/asm-ppc64/ptrace.h

···
 #define PTRACE_SETEVRREGS       21
 #endif
 
+/*
+ * Get or set a debug register. The first 16 are DABR registers and the
+ * second 16 are IABR registers.
+ */
+#define PTRACE_GET_DEBUGREG	25
+#define PTRACE_SET_DEBUGREG	26
+
 /* Additional PTRACE requests implemented on PowerPC. */
 #define PPC_PTRACE_GETREGS	0x99	/* Get GPRs 0 - 31 */
 #define PPC_PTRACE_SETREGS	0x98	/* Set GPRs 0 - 31 */