diff options
Diffstat (limited to 'arch/powerpc/include/asm/kprobes.h')
| -rw-r--r-- | arch/powerpc/include/asm/kprobes.h | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/arch/powerpc/include/asm/kprobes.h b/arch/powerpc/include/asm/kprobes.h index 97b8c1f83453..d821835ade86 100644 --- a/arch/powerpc/include/asm/kprobes.h +++ b/arch/powerpc/include/asm/kprobes.h @@ -29,6 +29,7 @@ #include <linux/types.h> #include <linux/ptrace.h> #include <linux/percpu.h> +#include <linux/module.h> #include <asm/probes.h> #include <asm/code-patching.h> @@ -39,7 +40,23 @@ struct pt_regs; struct kprobe; typedef ppc_opcode_t kprobe_opcode_t; -#define MAX_INSN_SIZE 1 + +extern kprobe_opcode_t optinsn_slot; + +/* Optinsn template address */ +extern kprobe_opcode_t optprobe_template_entry[]; +extern kprobe_opcode_t optprobe_template_op_address[]; +extern kprobe_opcode_t optprobe_template_call_handler[]; +extern kprobe_opcode_t optprobe_template_insn[]; +extern kprobe_opcode_t optprobe_template_call_emulate[]; +extern kprobe_opcode_t optprobe_template_ret[]; +extern kprobe_opcode_t optprobe_template_end[]; + +/* Fixed instruction size for powerpc */ +#define MAX_INSN_SIZE 1 +#define MAX_OPTIMIZED_LENGTH sizeof(kprobe_opcode_t) /* 4 bytes */ +#define MAX_OPTINSN_SIZE (optprobe_template_end - optprobe_template_entry) +#define RELATIVEJUMP_SIZE sizeof(kprobe_opcode_t) /* 4 bytes */ #ifdef PPC64_ELF_ABI_v2 /* PPC64 ABIv2 needs local entry point */ @@ -61,7 +78,7 @@ typedef ppc_opcode_t kprobe_opcode_t; #define kprobe_lookup_name(name, addr) \ { \ char dot_name[MODULE_NAME_LEN + 1 + KSYM_NAME_LEN]; \ - char *modsym; \ + const char *modsym; \ bool dot_appended = false; \ if ((modsym = strchr(name, ':')) != NULL) { \ modsym++; \ @@ -125,6 +142,12 @@ struct kprobe_ctlblk { struct prev_kprobe prev_kprobe; }; +struct arch_optimized_insn { + kprobe_opcode_t copied_insn[1]; + /* detour buffer */ + kprobe_opcode_t *insn; +}; + extern int kprobe_exceptions_notify(struct notifier_block *self, unsigned long val, void *data); extern int kprobe_fault_handler(struct pt_regs *regs, int trapnr); |