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(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 bool arch_callee_saved_reg(unsigned char reg); 83 84 unsigned long arch_jump_destination(struct instruction *insn); 85 86 unsigned long arch_dest_reloc_offset(int addend); 87 88 const char *arch_nop_insn(int len); 89 const char *arch_ret_insn(int len); 90 91 int arch_decode_hint_reg(u8 sp_reg, int *base); 92 93 bool arch_is_retpoline(struct symbol *sym); 94 bool arch_is_rethunk(struct symbol *sym); 95 bool arch_is_embedded_insn(struct symbol *sym); 96 97 int arch_rewrite_retpolines(struct objtool_file *file); 98 99 bool arch_pc_relative_reloc(struct reloc *reloc); 100 101 unsigned int arch_reloc_size(struct reloc *reloc); 102 unsigned long arch_jump_table_sym_offset(struct reloc *reloc, struct reloc *table); 103 104 #endif /* _ARCH_H */ 105