1 #include <sys/types.h> 2 #include <regex.h> 3 4 struct arm64_annotate { 5 regex_t call_insn, 6 jump_insn; 7 }; 8 9 static struct ins_ops *arm64__associate_instruction_ops(struct arch *arch, const char *name) 10 { 11 struct arm64_annotate *arm = arch->priv; 12 struct ins_ops *ops; 13 regmatch_t match[2]; 14 15 if (!regexec(&arm->jump_insn, name, 2, match, 0)) 16 ops = &jump_ops; 17 else if (!regexec(&arm->call_insn, name, 2, match, 0)) 18 ops = &call_ops; 19 else if (!strcmp(name, "ret")) 20 ops = &ret_ops; 21 else 22 return NULL; 23 24 arch__associate_ins_ops(arch, name, ops); 25 return ops; 26 } 27 28 static int arm64__annotate_init(struct arch *arch) 29 { 30 struct arm64_annotate *arm; 31 int err; 32 33 if (arch->initialized) 34 return 0; 35 36 arm = zalloc(sizeof(*arm)); 37 if (!arm) 38 return -1; 39 40 /* bl, blr */ 41 err = regcomp(&arm->call_insn, "^blr?$", REG_EXTENDED); 42 if (err) 43 goto out_free_arm; 44 /* b, b.cond, br, cbz/cbnz, tbz/tbnz */ 45 err = regcomp(&arm->jump_insn, "^[ct]?br?\\.?(cc|cs|eq|ge|gt|hi|le|ls|lt|mi|ne|pl)?n?z?$", 46 REG_EXTENDED); 47 if (err) 48 goto out_free_call; 49 50 arch->initialized = true; 51 arch->priv = arm; 52 arch->associate_instruction_ops = arm64__associate_instruction_ops; 53 arch->objdump.comment_char = ';'; 54 arch->objdump.skip_functions_char = '+'; 55 return 0; 56 57 out_free_call: 58 regfree(&arm->call_insn); 59 out_free_arm: 60 free(arm); 61 return -1; 62 } 63