1 files changed, 68 insertions, 0 deletions
diff --git a/tools/perf/util/annotate-arch/annotate-arm.c b/tools/perf/util/annotate-arch/annotate-arm.c
new file mode 100644
index 000000000000..afb413c80156
--- /dev/null
+++ b/tools/perf/util/annotate-arch/annotate-arm.c
@@ -0,0 +1,68 @@
+// 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;
+}