1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Copyright (C) 2015 Josh Poimboeuf <[email protected]> 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 14 enum 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_LEA_RIP, 32 INSN_OTHER, 33 }; 34 35 enum op_dest_type { 36 OP_DEST_REG, 37 OP_DEST_REG_INDIRECT, 38 OP_DEST_MEM, 39 OP_DEST_PUSH, 40 OP_DEST_PUSHF, 41 }; 42 43 struct op_dest { 44 enum op_dest_type type; 45 unsigned char reg; 46 int offset; 47 }; 48 49 enum op_src_type { 50 OP_SRC_REG, 51 OP_SRC_REG_INDIRECT, 52 OP_SRC_CONST, 53 OP_SRC_POP, 54 OP_SRC_POPF, 55 OP_SRC_ADD, 56 OP_SRC_AND, 57 }; 58 59 struct op_src { 60 enum op_src_type type; 61 unsigned char reg; 62 int offset; 63 }; 64 65 struct stack_op { 66 struct stack_op *next; 67 struct op_dest dest; 68 struct op_src src; 69 }; 70 71 struct instruction; 72 73 int arch_ftrace_match(char *name); 74 75 void arch_initial_func_cfi_state(struct cfi_init_state *state); 76 77 int arch_decode_instruction(struct objtool_file *file, const struct section *sec, 78 unsigned long offset, unsigned int maxlen, 79 struct instruction *insn); 80 81 bool arch_callee_saved_reg(unsigned char reg); 82 83 unsigned long arch_jump_destination(struct instruction *insn); 84 85 unsigned long arch_dest_reloc_offset(int addend); 86 87 const char *arch_nop_insn(int len); 88 const char *arch_ret_insn(int len); 89 90 int arch_decode_hint_reg(u8 sp_reg, int *base); 91 92 bool arch_is_retpoline(struct symbol *sym); 93 bool arch_is_rethunk(struct symbol *sym); 94 bool arch_is_embedded_insn(struct symbol *sym); 95 96 int arch_rewrite_retpolines(struct objtool_file *file); 97 98 bool arch_pc_relative_reloc(struct reloc *reloc); 99 100 unsigned int arch_reloc_size(struct reloc *reloc); 101 unsigned long arch_jump_table_sym_offset(struct reloc *reloc, struct reloc *table); 102 103 #endif /* _ARCH_H */ 104