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63 lines
1.4 KiB
63 lines
1.4 KiB
// SPDX-License-Identifier: GPL-2.0 |
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#include <linux/compiler.h> |
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#include <linux/zalloc.h> |
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#include <sys/types.h> |
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#include <regex.h> |
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#include <stdlib.h> |
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struct arm_annotate { |
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regex_t call_insn, |
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jump_insn; |
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}; |
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static struct ins_ops *arm__associate_instruction_ops(struct arch *arch, const char *name) |
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{ |
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struct arm_annotate *arm = arch->priv; |
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struct ins_ops *ops; |
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regmatch_t match[2]; |
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if (!regexec(&arm->call_insn, name, 2, match, 0)) |
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ops = &call_ops; |
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else if (!regexec(&arm->jump_insn, name, 2, match, 0)) |
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ops = &jump_ops; |
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else |
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return NULL; |
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arch__associate_ins_ops(arch, name, ops); |
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return ops; |
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} |
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static int arm__annotate_init(struct arch *arch, char *cpuid __maybe_unused) |
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{ |
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struct arm_annotate *arm; |
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int err; |
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if (arch->initialized) |
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return 0; |
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arm = zalloc(sizeof(*arm)); |
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if (!arm) |
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return ENOMEM; |
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#define ARM_CONDS "(cc|cs|eq|ge|gt|hi|le|ls|lt|mi|ne|pl|vc|vs)" |
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err = regcomp(&arm->call_insn, "^blx?" ARM_CONDS "?$", REG_EXTENDED); |
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if (err) |
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goto out_free_arm; |
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err = regcomp(&arm->jump_insn, "^bx?" ARM_CONDS "?$", REG_EXTENDED); |
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if (err) |
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goto out_free_call; |
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#undef ARM_CONDS |
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arch->initialized = true; |
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arch->priv = arm; |
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arch->associate_instruction_ops = arm__associate_instruction_ops; |
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arch->objdump.comment_char = ';'; |
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arch->objdump.skip_functions_char = '+'; |
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return 0; |
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out_free_call: |
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regfree(&arm->call_insn); |
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out_free_arm: |
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free(arm); |
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return SYMBOL_ANNOTATE_ERRNO__ARCH_INIT_REGEXP; |
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}
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