170 lines · c
1// SPDX-License-Identifier: GPL-2.02 3static int is_branch_cond(const char *cond)4{5 if (cond[0] == '\0')6 return 1;7 8 if (cond[0] == 'a' && cond[1] == '\0')9 return 1;10 11 if (cond[0] == 'c' &&12 (cond[1] == 'c' || cond[1] == 's') &&13 cond[2] == '\0')14 return 1;15 16 if (cond[0] == 'e' &&17 (cond[1] == '\0' ||18 (cond[1] == 'q' && cond[2] == '\0')))19 return 1;20 21 if (cond[0] == 'g' &&22 (cond[1] == '\0' ||23 (cond[1] == 't' && cond[2] == '\0') ||24 (cond[1] == 'e' && cond[2] == '\0') ||25 (cond[1] == 'e' && cond[2] == 'u' && cond[3] == '\0')))26 return 1;27 28 if (cond[0] == 'l' &&29 (cond[1] == '\0' ||30 (cond[1] == 't' && cond[2] == '\0') ||31 (cond[1] == 'u' && cond[2] == '\0') ||32 (cond[1] == 'e' && cond[2] == '\0') ||33 (cond[1] == 'e' && cond[2] == 'u' && cond[3] == '\0')))34 return 1;35 36 if (cond[0] == 'n' &&37 (cond[1] == '\0' ||38 (cond[1] == 'e' && cond[2] == '\0') ||39 (cond[1] == 'z' && cond[2] == '\0') ||40 (cond[1] == 'e' && cond[2] == 'g' && cond[3] == '\0')))41 return 1;42 43 if (cond[0] == 'b' &&44 cond[1] == 'p' &&45 cond[2] == 'o' &&46 cond[3] == 's' &&47 cond[4] == '\0')48 return 1;49 50 if (cond[0] == 'v' &&51 (cond[1] == 'c' || cond[1] == 's') &&52 cond[2] == '\0')53 return 1;54 55 if (cond[0] == 'b' &&56 cond[1] == 'z' &&57 cond[2] == '\0')58 return 1;59 60 return 0;61}62 63static int is_branch_reg_cond(const char *cond)64{65 if ((cond[0] == 'n' || cond[0] == 'l') &&66 cond[1] == 'z' &&67 cond[2] == '\0')68 return 1;69 70 if (cond[0] == 'z' &&71 cond[1] == '\0')72 return 1;73 74 if ((cond[0] == 'g' || cond[0] == 'l') &&75 cond[1] == 'e' &&76 cond[2] == 'z' &&77 cond[3] == '\0')78 return 1;79 80 if (cond[0] == 'g' &&81 cond[1] == 'z' &&82 cond[2] == '\0')83 return 1;84 85 return 0;86}87 88static int is_branch_float_cond(const char *cond)89{90 if (cond[0] == '\0')91 return 1;92 93 if ((cond[0] == 'a' || cond[0] == 'e' ||94 cond[0] == 'z' || cond[0] == 'g' ||95 cond[0] == 'l' || cond[0] == 'n' ||96 cond[0] == 'o' || cond[0] == 'u') &&97 cond[1] == '\0')98 return 1;99 100 if (((cond[0] == 'g' && cond[1] == 'e') ||101 (cond[0] == 'l' && (cond[1] == 'e' ||102 cond[1] == 'g')) ||103 (cond[0] == 'n' && (cond[1] == 'e' ||104 cond[1] == 'z')) ||105 (cond[0] == 'u' && (cond[1] == 'e' ||106 cond[1] == 'g' ||107 cond[1] == 'l'))) &&108 cond[2] == '\0')109 return 1;110 111 if (cond[0] == 'u' &&112 (cond[1] == 'g' || cond[1] == 'l') &&113 cond[2] == 'e' &&114 cond[3] == '\0')115 return 1;116 117 return 0;118}119 120static struct ins_ops *sparc__associate_instruction_ops(struct arch *arch, const char *name)121{122 struct ins_ops *ops = NULL;123 124 if (!strcmp(name, "call") ||125 !strcmp(name, "jmp") ||126 !strcmp(name, "jmpl")) {127 ops = &call_ops;128 } else if (!strcmp(name, "ret") ||129 !strcmp(name, "retl") ||130 !strcmp(name, "return")) {131 ops = &ret_ops;132 } else if (!strcmp(name, "mov")) {133 ops = &mov_ops;134 } else {135 if (name[0] == 'c' &&136 (name[1] == 'w' || name[1] == 'x'))137 name += 2;138 139 if (name[0] == 'b') {140 const char *cond = name + 1;141 142 if (cond[0] == 'r') {143 if (is_branch_reg_cond(cond + 1))144 ops = &jump_ops;145 } else if (is_branch_cond(cond)) {146 ops = &jump_ops;147 }148 } else if (name[0] == 'f' && name[1] == 'b') {149 if (is_branch_float_cond(name + 2))150 ops = &jump_ops;151 }152 }153 154 if (ops)155 arch__associate_ins_ops(arch, name, ops);156 157 return ops;158}159 160static int sparc__annotate_init(struct arch *arch, char *cpuid __maybe_unused)161{162 if (!arch->initialized) {163 arch->initialized = true;164 arch->associate_instruction_ops = sparc__associate_instruction_ops;165 arch->objdump.comment_char = '#';166 }167 168 return 0;169}170