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-rw-r--r--tools/perf/arch/arm/annotate/instructions.c63
1 files changed, 63 insertions, 0 deletions
diff --git a/tools/perf/arch/arm/annotate/instructions.c b/tools/perf/arch/arm/annotate/instructions.c
new file mode 100644
index 000000000..2ff6cedeb
--- /dev/null
+++ b/tools/perf/arch/arm/annotate/instructions.c
@@ -0,0 +1,63 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/compiler.h>
+#include <linux/zalloc.h>
+#include <sys/types.h>
+#include <regex.h>
+#include <stdlib.h>
+
+struct arm_annotate {
+ regex_t call_insn,
+ jump_insn;
+};
+
+static struct ins_ops *arm__associate_instruction_ops(struct arch *arch, const char *name)
+{
+ struct arm_annotate *arm = arch->priv;
+ 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;
+}
+
+static int arm__annotate_init(struct arch *arch, char *cpuid __maybe_unused)
+{
+ struct arm_annotate *arm;
+ int err;
+
+ if (arch->initialized)
+ return 0;
+
+ arm = zalloc(sizeof(*arm));
+ if (!arm)
+ return ENOMEM;
+
+#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
+
+ arch->initialized = true;
+ arch->priv = arm;
+ arch->associate_instruction_ops = arm__associate_instruction_ops;
+ arch->objdump.comment_char = ';';
+ arch->objdump.skip_functions_char = '+';
+ return 0;
+
+out_free_call:
+ regfree(&arm->call_insn);
+out_free_arm:
+ free(arm);
+ return SYMBOL_ANNOTATE_ERRNO__ARCH_INIT_REGEXP;
+}