1 // SPDX-License-Identifier: GPL-2.0 2 #include <sys/types.h> 3 #include <regex.h> 4 5 struct arm_annotate { 6 regex_t call_insn, 7 jump_insn; 8 }; 9 10 static struct ins_ops *arm__associate_instruction_ops(struct arch *arch, const char *name) 11 { 12 struct arm_annotate *arm = arch->priv; 13 struct ins_ops *ops; 14 regmatch_t match[2]; 15 16 if (!regexec(&arm->call_insn, name, 2, match, 0)) 17 ops = &call_ops; 18 else if (!regexec(&arm->jump_insn, name, 2, match, 0)) 19 ops = &jump_ops; 20 else 21 return NULL; 22 23 arch__associate_ins_ops(arch, name, ops); 24 return ops; 25 } 26 27 static int arm__annotate_init(struct arch *arch) 28 { 29 struct arm_annotate *arm; 30 int err; 31 32 if (arch->initialized) 33 return 0; 34 35 arm = zalloc(sizeof(*arm)); 36 if (!arm) 37 return -1; 38 39 #define ARM_CONDS "(cc|cs|eq|ge|gt|hi|le|ls|lt|mi|ne|pl|vc|vs)" 40 err = regcomp(&arm->call_insn, "^blx?" ARM_CONDS "?$", REG_EXTENDED); 41 if (err) 42 goto out_free_arm; 43 err = regcomp(&arm->jump_insn, "^bx?" ARM_CONDS "?$", REG_EXTENDED); 44 if (err) 45 goto out_free_call; 46 #undef ARM_CONDS 47 48 arch->initialized = true; 49 arch->priv = arm; 50 arch->associate_instruction_ops = arm__associate_instruction_ops; 51 arch->objdump.comment_char = ';'; 52 arch->objdump.skip_functions_char = '+'; 53 return 0; 54 55 out_free_call: 56 regfree(&arm->call_insn); 57 out_free_arm: 58 free(arm); 59 return -1; 60 } 61