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