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 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_SYSCALL, 23 INSN_SYSRET, 24 INSN_BUG, 25 INSN_NOP, 26 INSN_STAC, 27 INSN_CLAC, 28 INSN_STD, 29 INSN_CLD, 30 INSN_TRAP, 31 INSN_ENDBR, 32 INSN_LEA_RIP, 33 INSN_OTHER, 34 }; 35 36 enum op_dest_type { 37 OP_DEST_REG, 38 OP_DEST_REG_INDIRECT, 39 OP_DEST_MEM, 40 OP_DEST_PUSH, 41 OP_DEST_PUSHF, 42 }; 43 44 struct op_dest { 45 enum op_dest_type type; 46 unsigned char reg; 47 int offset; 48 }; 49 50 enum op_src_type { 51 OP_SRC_REG, 52 OP_SRC_REG_INDIRECT, 53 OP_SRC_CONST, 54 OP_SRC_POP, 55 OP_SRC_POPF, 56 OP_SRC_ADD, 57 OP_SRC_AND, 58 }; 59 60 struct op_src { 61 enum op_src_type type; 62 unsigned char reg; 63 int offset; 64 }; 65 66 struct stack_op { 67 struct stack_op *next; 68 struct op_dest dest; 69 struct op_src src; 70 }; 71 72 struct instruction; 73 74 int arch_ftrace_match(const char *name); 75 76 void arch_initial_func_cfi_state(struct cfi_init_state *state); 77 78 int arch_decode_instruction(struct objtool_file *file, const struct section *sec, 79 unsigned long offset, unsigned int maxlen, 80 struct instruction *insn); 81 82 size_t arch_jump_opcode_bytes(struct objtool_file *file, struct instruction *insn, 83 unsigned char *buf); 84 85 bool arch_callee_saved_reg(unsigned char reg); 86 87 unsigned long arch_jump_destination(struct instruction *insn); 88 89 s64 arch_insn_adjusted_addend(struct instruction *insn, struct reloc *reloc); 90 u64 arch_adjusted_addend(struct reloc *reloc); 91 92 const char *arch_nop_insn(int len); 93 const char *arch_ret_insn(int len); 94 95 int arch_decode_hint_reg(u8 sp_reg, int *base); 96 97 bool arch_is_retpoline(struct symbol *sym); 98 bool arch_is_rethunk(struct symbol *sym); 99 bool arch_is_embedded_insn(struct symbol *sym); 100 101 int arch_rewrite_retpolines(struct objtool_file *file); 102 103 bool arch_pc_relative_reloc(struct reloc *reloc); 104 bool arch_absolute_reloc(struct elf *elf, struct reloc *reloc); 105 106 unsigned int arch_reloc_size(struct reloc *reloc); 107 unsigned long arch_jump_table_sym_offset(struct reloc *reloc, struct reloc *table); 108 109 extern const char *arch_reg_name[CFI_NUM_REGS]; 110 111 #ifdef DISAS 112 113 #include <bfd.h> 114 #include <dis-asm.h> 115 116 int arch_disas_info_init(struct disassemble_info *dinfo); 117 118 #endif /* DISAS */ 119 120 #endif /* _ARCH_H */ 121