1/* SPDX-License-Identifier: GPL-2.0-or-later */ 2/* 3 * Copyright (C) 2015 Josh Poimboeuf <jpoimboe@redhat.com> 4 */ 5 6#ifndef _ARCH_H 7#define _ARCH_H 8 9#include <stdbool.h> 10#include <linux/list.h> 11#include <objtool/objtool.h> 12#include <objtool/cfi.h> 13 14enum insn_type { 15 INSN_JUMP_CONDITIONAL, 16 INSN_JUMP_UNCONDITIONAL, 17 INSN_JUMP_DYNAMIC, 18 INSN_JUMP_DYNAMIC_CONDITIONAL, 19 INSN_CALL, 20 INSN_CALL_DYNAMIC, 21 INSN_RETURN, 22 INSN_CONTEXT_SWITCH, 23 INSN_BUG, 24 INSN_NOP, 25 INSN_STAC, 26 INSN_CLAC, 27 INSN_STD, 28 INSN_CLD, 29 INSN_TRAP, 30 INSN_ENDBR, 31 INSN_OTHER, 32}; 33 34enum op_dest_type { 35 OP_DEST_REG, 36 OP_DEST_REG_INDIRECT, 37 OP_DEST_MEM, 38 OP_DEST_PUSH, 39 OP_DEST_PUSHF, 40}; 41 42struct op_dest { 43 enum op_dest_type type; 44 unsigned char reg; 45 int offset; 46}; 47 48enum op_src_type { 49 OP_SRC_REG, 50 OP_SRC_REG_INDIRECT, 51 OP_SRC_CONST, 52 OP_SRC_POP, 53 OP_SRC_POPF, 54 OP_SRC_ADD, 55 OP_SRC_AND, 56}; 57 58struct op_src { 59 enum op_src_type type; 60 unsigned char reg; 61 int offset; 62}; 63 64struct stack_op { 65 struct stack_op *next; 66 struct op_dest dest; 67 struct op_src src; 68}; 69 70struct instruction; 71 72int arch_ftrace_match(char *name); 73 74void arch_initial_func_cfi_state(struct cfi_init_state *state); 75 76int arch_decode_instruction(struct objtool_file *file, const struct section *sec, 77 unsigned long offset, unsigned int maxlen, 78 struct instruction *insn); 79 80bool arch_callee_saved_reg(unsigned char reg); 81 82unsigned long arch_jump_destination(struct instruction *insn); 83 84unsigned long arch_dest_reloc_offset(int addend); 85 86const char *arch_nop_insn(int len); 87const char *arch_ret_insn(int len); 88 89int arch_decode_hint_reg(u8 sp_reg, int *base); 90 91bool arch_is_retpoline(struct symbol *sym); 92bool arch_is_rethunk(struct symbol *sym); 93bool arch_is_embedded_insn(struct symbol *sym); 94 95int arch_rewrite_retpolines(struct objtool_file *file); 96 97bool arch_pc_relative_reloc(struct reloc *reloc); 98 99#endif /* _ARCH_H */ 100