fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / include / asm-powerpc / kprobes.h

diff --git a/include/asm-powerpc/kprobes.h b/include/asm-powerpc/kprobes.h
index f466bc8..2dafa37 100644 (file)
--- a/include/asm-powerpc/kprobes.h
+++ b/include/asm-powerpc/kprobes.h
@@ -44,12 +44,37 @@ typedef unsigned int kprobe_opcode_t;
 #define IS_TDI(instr)          (((instr) & 0xfc000000) == 0x08000000)
 #define IS_TWI(instr)          (((instr) & 0xfc000000) == 0x0c000000)
 
+/*
+ * 64bit powerpc uses function descriptors.
+ * Handle cases where:
+ *             - User passes a <.symbol> or <module:.symbol>
+ *             - User passes a <symbol> or <module:symbol>
+ *             - User passes a non-existant symbol, kallsyms_lookup_name
+ *               returns 0. Don't deref the NULL pointer in that case
+ */
+#define kprobe_lookup_name(name, addr)                                 \
+{                                                                      \
+       addr = (kprobe_opcode_t *)kallsyms_lookup_name(name);           \
+       if (addr) {                                                     \
+               char *colon;                                            \
+               if ((colon = strchr(name, ':')) != NULL) {              \
+                       colon++;                                        \
+                       if (*colon != '\0' && *colon != '.')            \
+                               addr = *(kprobe_opcode_t **)addr;       \
+               } else if (name[0] != '.')                              \
+                       addr = *(kprobe_opcode_t **)addr;               \
+       }                                                               \
+}
+
 #define JPROBE_ENTRY(pentry)   (kprobe_opcode_t *)((func_descr_t *)pentry)
 
 #define is_trap(instr) (IS_TW(instr) || IS_TD(instr) || \
                        IS_TWI(instr) || IS_TDI(instr))
 
 #define ARCH_SUPPORTS_KRETPROBES
+#define  ARCH_INACTIVE_KPROBE_COUNT 1
+#define flush_insn_slot(p)     do { } while (0)
+
 void kretprobe_trampoline(void);
 extern void arch_remove_kprobe(struct kprobe *p);