2017-10-27 20:25:36 +00:00
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#ifndef _ASM_X86_INSN_EVAL_H
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#define _ASM_X86_INSN_EVAL_H
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/*
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* A collection of utility functions for x86 instruction analysis to be
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* used in a kernel context. Useful when, for instance, making sense
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* of the registers indicated by operands.
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*/
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#include <linux/compiler.h>
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#include <linux/bug.h>
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#include <linux/err.h>
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#include <asm/ptrace.h>
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2017-10-27 20:25:43 +00:00
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#define INSN_CODE_SEG_ADDR_SZ(params) ((params >> 4) & 0xf)
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#define INSN_CODE_SEG_OPND_SZ(params) (params & 0xf)
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#define INSN_CODE_SEG_PARAMS(oper_sz, addr_sz) (oper_sz | (addr_sz << 4))
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2021-11-10 10:01:09 +00:00
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int pt_regs_offset(struct pt_regs *regs, int regno);
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2020-09-07 13:15:12 +00:00
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bool insn_has_rep_prefix(struct insn *insn);
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2017-10-27 20:25:36 +00:00
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void __user *insn_get_addr_ref(struct insn *insn, struct pt_regs *regs);
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2017-10-27 20:25:38 +00:00
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int insn_get_modrm_rm_off(struct insn *insn, struct pt_regs *regs);
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2020-09-07 13:15:11 +00:00
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int insn_get_modrm_reg_off(struct insn *insn, struct pt_regs *regs);
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2021-11-30 18:49:31 +00:00
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unsigned long *insn_get_modrm_reg_ptr(struct insn *insn, struct pt_regs *regs);
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2017-10-27 20:25:42 +00:00
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unsigned long insn_get_seg_base(struct pt_regs *regs, int seg_reg_idx);
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2017-11-23 09:19:51 +00:00
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int insn_get_code_seg_params(struct pt_regs *regs);
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2021-09-17 09:20:04 +00:00
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int insn_get_effective_ip(struct pt_regs *regs, unsigned long *ip);
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2020-09-07 13:15:09 +00:00
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int insn_fetch_from_user(struct pt_regs *regs,
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unsigned char buf[MAX_INSN_SIZE]);
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2021-03-03 14:17:16 +00:00
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int insn_fetch_from_user_inatomic(struct pt_regs *regs,
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unsigned char buf[MAX_INSN_SIZE]);
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2020-11-02 17:47:34 +00:00
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bool insn_decode_from_regs(struct insn *insn, struct pt_regs *regs,
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unsigned char buf[MAX_INSN_SIZE], int buf_size);
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2017-10-27 20:25:36 +00:00
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2023-01-01 16:29:04 +00:00
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enum insn_mmio_type {
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INSN_MMIO_DECODE_FAILED,
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INSN_MMIO_WRITE,
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INSN_MMIO_WRITE_IMM,
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INSN_MMIO_READ,
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INSN_MMIO_READ_ZERO_EXTEND,
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INSN_MMIO_READ_SIGN_EXTEND,
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INSN_MMIO_MOVS,
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2021-11-30 18:49:32 +00:00
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};
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2023-01-01 16:29:04 +00:00
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enum insn_mmio_type insn_decode_mmio(struct insn *insn, int *bytes);
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2021-11-30 18:49:32 +00:00
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2017-10-27 20:25:36 +00:00
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#endif /* _ASM_X86_INSN_EVAL_H */
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