| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 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 | |
| Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 18 | bool insn_has_rep_prefix(struct insn *insn); |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 19 | void __user *insn_get_addr_ref(struct insn *insn, struct pt_regs *regs); |
| 20 | int insn_get_modrm_rm_off(struct insn *insn, struct pt_regs *regs); |
| Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 21 | int insn_get_modrm_reg_off(struct insn *insn, struct pt_regs *regs); |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 22 | unsigned long insn_get_seg_base(struct pt_regs *regs, int seg_reg_idx); |
| 23 | int insn_get_code_seg_params(struct pt_regs *regs); |
| Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 24 | unsigned long insn_get_effective_ip(struct pt_regs *regs); |
| 25 | int insn_fetch_from_user(struct pt_regs *regs, |
| 26 | unsigned char buf[MAX_INSN_SIZE]); |
| 27 | int insn_fetch_from_user_inatomic(struct pt_regs *regs, |
| 28 | unsigned char buf[MAX_INSN_SIZE]); |
| 29 | bool insn_decode(struct insn *insn, struct pt_regs *regs, |
| 30 | unsigned char buf[MAX_INSN_SIZE], int buf_size); |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 31 | |
| 32 | #endif /* _ASM_X86_INSN_EVAL_H */ |