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Diffstat (limited to 'arch/ia64/include/asm/kprobes.h')
| -rw-r--r-- | arch/ia64/include/asm/kprobes.h | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/arch/ia64/include/asm/kprobes.h b/arch/ia64/include/asm/kprobes.h new file mode 100644 index 000000000..c5cf5e4fb --- /dev/null +++ b/arch/ia64/include/asm/kprobes.h @@ -0,0 +1,118 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +#ifndef _ASM_KPROBES_H +#define _ASM_KPROBES_H +/* + * Kernel Probes (KProbes) + * + * Copyright (C) IBM Corporation, 2002, 2004 + * Copyright (C) Intel Corporation, 2005 + * + * 2005-Apr Rusty Lynch <rusty.lynch@intel.com> and Anil S Keshavamurthy + * <anil.s.keshavamurthy@intel.com> adapted from i386 + */ +#include <asm-generic/kprobes.h> +#include <asm/break.h> + +#define BREAK_INST (long)(__IA64_BREAK_KPROBE << 6) + +#ifdef CONFIG_KPROBES + +#include <linux/types.h> +#include <linux/ptrace.h> +#include <linux/percpu.h> + +#define __ARCH_WANT_KPROBES_INSN_SLOT +#define MAX_INSN_SIZE 2 /* last half is for kprobe-booster */ +#define NOP_M_INST (long)(1<<27) +#define BRL_INST(i1, i2) ((long)((0xcL << 37) | /* brl */ \ + (0x1L << 12) | /* many */ \ + (((i1) & 1) << 36) | ((i2) << 13))) /* imm */ + +typedef union cmp_inst { + struct { + unsigned long long qp : 6; + unsigned long long p1 : 6; + unsigned long long c : 1; + unsigned long long r2 : 7; + unsigned long long r3 : 7; + unsigned long long p2 : 6; + unsigned long long ta : 1; + unsigned long long x2 : 2; + unsigned long long tb : 1; + unsigned long long opcode : 4; + unsigned long long reserved : 23; + }f; + unsigned long long l; +} cmp_inst_t; + +struct kprobe; + +typedef struct _bundle { + struct { + unsigned long long template : 5; + unsigned long long slot0 : 41; + unsigned long long slot1_p0 : 64-46; + } quad0; + struct { + unsigned long long slot1_p1 : 41 - (64-46); + unsigned long long slot2 : 41; + } quad1; +} __attribute__((__aligned__(16))) bundle_t; + +struct prev_kprobe { + struct kprobe *kp; + unsigned long status; +}; + +#define MAX_PARAM_RSE_SIZE (0x60+0x60/0x3f) +/* per-cpu kprobe control block */ +#define ARCH_PREV_KPROBE_SZ 2 +struct kprobe_ctlblk { + unsigned long kprobe_status; + unsigned long *bsp; + unsigned long cfm; + atomic_t prev_kprobe_index; + struct prev_kprobe prev_kprobe[ARCH_PREV_KPROBE_SZ]; +}; + +#define kretprobe_blacklist_size 0 + +#define SLOT0_OPCODE_SHIFT (37) +#define SLOT1_p1_OPCODE_SHIFT (37 - (64-46)) +#define SLOT2_OPCODE_SHIFT (37) + +#define INDIRECT_CALL_OPCODE (1) +#define IP_RELATIVE_CALL_OPCODE (5) +#define IP_RELATIVE_BRANCH_OPCODE (4) +#define IP_RELATIVE_PREDICT_OPCODE (7) +#define LONG_BRANCH_OPCODE (0xC) +#define LONG_CALL_OPCODE (0xD) +#define flush_insn_slot(p) do { } while (0) + +typedef struct kprobe_opcode { + bundle_t bundle; +} kprobe_opcode_t; + +/* Architecture specific copy of original instruction*/ +struct arch_specific_insn { + /* copy of the instruction to be emulated */ + kprobe_opcode_t *insn; + #define INST_FLAG_FIX_RELATIVE_IP_ADDR 1 + #define INST_FLAG_FIX_BRANCH_REG 2 + #define INST_FLAG_BREAK_INST 4 + #define INST_FLAG_BOOSTABLE 8 + unsigned long inst_flag; + unsigned short target_br_reg; + unsigned short slot; +}; + +extern int kprobe_fault_handler(struct pt_regs *regs, int trapnr); +extern int kprobe_exceptions_notify(struct notifier_block *self, + unsigned long val, void *data); + +extern void invalidate_stacked_regs(void); +extern void flush_register_stack(void); +extern void arch_remove_kprobe(struct kprobe *p); + +#endif /* CONFIG_KPROBES */ +#endif /* _ASM_KPROBES_H */ |