1 | #ifndef _ASM_X86_INSN_EVAL_H |
2 | #define _ASM_X86_INSN_EVAL_H |
3 | /* |
4 | * A collection of utility functions for x86 instruction analysis to be |
5 | * used in a kernel context. Useful when, for instance, making sense |
6 | * of the registers indicated by operands. |
7 | */ |
8 | |
9 | #include <linux/compiler.h> |
10 | #include <linux/bug.h> |
11 | #include <linux/err.h> |
12 | #include <asm/ptrace.h> |
13 | |
14 | #define INSN_CODE_SEG_ADDR_SZ(params) ((params >> 4) & 0xf) |
15 | #define INSN_CODE_SEG_OPND_SZ(params) (params & 0xf) |
16 | #define INSN_CODE_SEG_PARAMS(oper_sz, addr_sz) (oper_sz | (addr_sz << 4)) |
17 | |
18 | int pt_regs_offset(struct pt_regs *regs, int regno); |
19 | |
20 | bool insn_has_rep_prefix(struct insn *insn); |
21 | void __user *insn_get_addr_ref(struct insn *insn, struct pt_regs *regs); |
22 | int insn_get_modrm_rm_off(struct insn *insn, struct pt_regs *regs); |
23 | int insn_get_modrm_reg_off(struct insn *insn, struct pt_regs *regs); |
24 | unsigned long *insn_get_modrm_reg_ptr(struct insn *insn, struct pt_regs *regs); |
25 | unsigned long insn_get_seg_base(struct pt_regs *regs, int seg_reg_idx); |
26 | int insn_get_code_seg_params(struct pt_regs *regs); |
27 | int insn_get_effective_ip(struct pt_regs *regs, unsigned long *ip); |
28 | int insn_fetch_from_user(struct pt_regs *regs, |
29 | unsigned char buf[MAX_INSN_SIZE]); |
30 | int insn_fetch_from_user_inatomic(struct pt_regs *regs, |
31 | unsigned char buf[MAX_INSN_SIZE]); |
32 | bool insn_decode_from_regs(struct insn *insn, struct pt_regs *regs, |
33 | unsigned char buf[MAX_INSN_SIZE], int buf_size); |
34 | |
35 | enum insn_mmio_type { |
36 | INSN_MMIO_DECODE_FAILED, |
37 | INSN_MMIO_WRITE, |
38 | INSN_MMIO_WRITE_IMM, |
39 | INSN_MMIO_READ, |
40 | INSN_MMIO_READ_ZERO_EXTEND, |
41 | INSN_MMIO_READ_SIGN_EXTEND, |
42 | INSN_MMIO_MOVS, |
43 | }; |
44 | |
45 | enum insn_mmio_type insn_decode_mmio(struct insn *insn, int *bytes); |
46 | |
47 | #endif /* _ASM_X86_INSN_EVAL_H */ |
48 | |