69 lines
1.5 KiB
C
69 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <stdlib.h>
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#include <linux/compiler.h>
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#include <linux/zalloc.h>
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#include <errno.h>
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#include <regex.h>
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#include "../annotate.h"
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#include "../disasm.h"
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struct arch_arm {
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struct arch arch;
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regex_t call_insn;
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regex_t jump_insn;
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};
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static const struct ins_ops *arm__associate_instruction_ops(struct arch *arch, const char *name)
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{
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struct arch_arm *arm = container_of(arch, struct arch_arm, arch);
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const 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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const struct arch *arch__new_arm(const struct e_machine_and_e_flags *id,
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const char *cpuid __maybe_unused)
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{
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int err;
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struct arch_arm *arm = zalloc(sizeof(*arm));
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struct arch *arch;
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if (!arm)
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return NULL;
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arch = &arm->arch;
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arch->name = "arm";
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arch->id = *id;
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arch->objdump.comment_char = ';';
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arch->objdump.skip_functions_char = '+';
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arch->associate_instruction_ops = arm__associate_instruction_ops;
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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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return arch;
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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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errno = SYMBOL_ANNOTATE_ERRNO__ARCH_INIT_REGEXP;
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return NULL;
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}
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