diff options
Diffstat (limited to 'tools/perf/arch/arm64/annotate')
-rw-r--r-- | tools/perf/arch/arm64/annotate/instructions.c | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/tools/perf/arch/arm64/annotate/instructions.c b/tools/perf/arch/arm64/annotate/instructions.c new file mode 100644 index 000000000..037e292ec --- /dev/null +++ b/tools/perf/arch/arm64/annotate/instructions.c @@ -0,0 +1,122 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <linux/compiler.h> +#include <sys/types.h> +#include <regex.h> +#include <stdlib.h> + +struct arm64_annotate { + regex_t call_insn, + jump_insn; +}; + +static int arm64_mov__parse(struct arch *arch __maybe_unused, + struct ins_operands *ops, + struct map_symbol *ms __maybe_unused) +{ + char *s = strchr(ops->raw, ','), *target, *endptr; + + if (s == NULL) + return -1; + + *s = '\0'; + ops->source.raw = strdup(ops->raw); + *s = ','; + + if (ops->source.raw == NULL) + return -1; + + target = ++s; + ops->target.raw = strdup(target); + if (ops->target.raw == NULL) + goto out_free_source; + + ops->target.addr = strtoull(target, &endptr, 16); + if (endptr == target) + goto out_free_target; + + s = strchr(endptr, '<'); + if (s == NULL) + goto out_free_target; + endptr = strchr(s + 1, '>'); + if (endptr == NULL) + goto out_free_target; + + *endptr = '\0'; + *s = ' '; + ops->target.name = strdup(s); + *s = '<'; + *endptr = '>'; + if (ops->target.name == NULL) + goto out_free_target; + + return 0; + +out_free_target: + zfree(&ops->target.raw); +out_free_source: + zfree(&ops->source.raw); + return -1; +} + +static int mov__scnprintf(struct ins *ins, char *bf, size_t size, + struct ins_operands *ops, int max_ins_name); + +static struct ins_ops arm64_mov_ops = { + .parse = arm64_mov__parse, + .scnprintf = mov__scnprintf, +}; + +static struct ins_ops *arm64__associate_instruction_ops(struct arch *arch, const char *name) +{ + struct arm64_annotate *arm = arch->priv; + struct ins_ops *ops; + regmatch_t match[2]; + + if (!regexec(&arm->jump_insn, name, 2, match, 0)) + ops = &jump_ops; + else if (!regexec(&arm->call_insn, name, 2, match, 0)) + ops = &call_ops; + else if (!strcmp(name, "ret")) + ops = &ret_ops; + else + ops = &arm64_mov_ops; + + arch__associate_ins_ops(arch, name, ops); + return ops; +} + +static int arm64__annotate_init(struct arch *arch, char *cpuid __maybe_unused) +{ + struct arm64_annotate *arm; + int err; + + if (arch->initialized) + return 0; + + arm = zalloc(sizeof(*arm)); + if (!arm) + return ENOMEM; + + /* bl, blr */ + err = regcomp(&arm->call_insn, "^blr?$", REG_EXTENDED); + if (err) + goto out_free_arm; + /* b, b.cond, br, cbz/cbnz, tbz/tbnz */ + err = regcomp(&arm->jump_insn, "^[ct]?br?\\.?(cc|cs|eq|ge|gt|hi|le|ls|lt|mi|ne|pl)?n?z?$", + REG_EXTENDED); + if (err) + goto out_free_call; + + arch->initialized = true; + arch->priv = arm; + arch->associate_instruction_ops = arm64__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; +} |