projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
| 696e2457 | 2 | #include <linux/compiler.h> |
| 7f7c536f | 3 | #include <linux/zalloc.h> |
| acc9bfb5 ACM |
4 | #include <sys/types.h> |
| 5 | #include <regex.h> | |
| f2a39fe8 | 6 | #include <stdlib.h> |
| acc9bfb5 ACM |
7 | |
| 8 | struct arm_annotate { | |
| 9 | regex_t call_insn, | |
| 10 | jump_insn; | |
| 763d8960 | 11 | }; |
| acc9bfb5 ACM |
12 | |
| 13 | static struct ins_ops *arm__associate_instruction_ops(struct arch *arch, const char *name) | |
| 14 | { | |
| 15 | struct arm_annotate *arm = arch->priv; | |
| 16 | struct ins_ops *ops; | |
| 17 | regmatch_t match[2]; | |
| 18 | ||
| 19 | if (!regexec(&arm->call_insn, name, 2, match, 0)) | |
| 20 | ops = &call_ops; | |
| 21 | else if (!regexec(&arm->jump_insn, name, 2, match, 0)) | |
| 22 | ops = &jump_ops; | |
| 23 | else | |
| 24 | return NULL; | |
| 25 | ||
| 26 | arch__associate_ins_ops(arch, name, ops); | |
| 27 | return ops; | |
| 28 | } | |
| 29 | ||
| 696e2457 | 30 | static int arm__annotate_init(struct arch *arch, char *cpuid __maybe_unused) |
| acc9bfb5 ACM |
31 | { |
| 32 | struct arm_annotate *arm; | |
| 33 | int err; | |
| 34 | ||
| 35 | if (arch->initialized) | |
| 36 | return 0; | |
| 37 | ||
| 38 | arm = zalloc(sizeof(*arm)); | |
| 39 | if (!arm) | |
| 42d7a910 | 40 | return ENOMEM; |
| acc9bfb5 ACM |
41 | |
| 42 | #define ARM_CONDS "(cc|cs|eq|ge|gt|hi|le|ls|lt|mi|ne|pl|vc|vs)" | |
| 43 | err = regcomp(&arm->call_insn, "^blx?" ARM_CONDS "?$", REG_EXTENDED); | |
| 44 | if (err) | |
| 45 | goto out_free_arm; | |
| 46 | err = regcomp(&arm->jump_insn, "^bx?" ARM_CONDS "?$", REG_EXTENDED); | |
| 47 | if (err) | |
| 48 | goto out_free_call; | |
| 49 | #undef ARM_CONDS | |
| 50 | ||
| 51 | arch->initialized = true; | |
| 52 | arch->priv = arm; | |
| 53 | arch->associate_instruction_ops = arm__associate_instruction_ops; | |
| 54 | arch->objdump.comment_char = ';'; | |
| 55 | arch->objdump.skip_functions_char = '+'; | |
| cd6c9dca IR |
56 | arch->e_machine = EM_ARM; |
| 57 | arch->e_flags = 0; | |
| acc9bfb5 ACM |
58 | return 0; |
| 59 | ||
| 60 | out_free_call: | |
| 61 | regfree(&arm->call_insn); | |
| 62 | out_free_arm: | |
| 63 | free(arm); | |
| 42d7a910 | 64 | return SYMBOL_ANNOTATE_ERRNO__ARCH_INIT_REGEXP; |
| acc9bfb5 | 65 | } |