tools lib traceevent: Add support for __print_hex()
Since the __print_hex() function is used in print fmt now, add corresponding parser routines. This makes the output of perf script on the kvm_emulate_insn event not to fail any more. before: kvm_emulate_insn: [FAILED TO PARSE] rip=3238197797 ... after: kvm_emulate_insn: 0:c102fa25:89 10 (prot32) Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/1340757701-10711-4-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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@ -697,6 +697,10 @@ static void free_arg(struct print_arg *arg)
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free_arg(arg->symbol.field);
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free_flag_sym(arg->symbol.symbols);
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break;
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case PRINT_HEX:
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free_arg(arg->hex.field);
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free_arg(arg->hex.size);
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break;
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case PRINT_TYPE:
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free(arg->typecast.type);
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free_arg(arg->typecast.item);
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@ -2259,6 +2263,45 @@ process_symbols(struct event_format *event, struct print_arg *arg, char **tok)
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return EVENT_ERROR;
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}
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static enum event_type
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process_hex(struct event_format *event, struct print_arg *arg, char **tok)
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{
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struct print_arg *field;
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enum event_type type;
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char *token;
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memset(arg, 0, sizeof(*arg));
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arg->type = PRINT_HEX;
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field = alloc_arg();
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type = process_arg(event, field, &token);
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if (test_type_token(type, token, EVENT_DELIM, ","))
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goto out_free;
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arg->hex.field = field;
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free_token(token);
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field = alloc_arg();
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type = process_arg(event, field, &token);
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if (test_type_token(type, token, EVENT_DELIM, ")"))
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goto out_free;
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arg->hex.size = field;
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free_token(token);
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type = read_token_item(tok);
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return type;
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out_free:
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free_arg(field);
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free_token(token);
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*tok = NULL;
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return EVENT_ERROR;
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}
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static enum event_type
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process_dynamic_array(struct event_format *event, struct print_arg *arg, char **tok)
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{
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@ -2488,6 +2531,10 @@ process_function(struct event_format *event, struct print_arg *arg,
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is_symbolic_field = 1;
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return process_symbols(event, arg, tok);
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}
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if (strcmp(token, "__print_hex") == 0) {
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free_token(token);
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return process_hex(event, arg, tok);
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}
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if (strcmp(token, "__get_str") == 0) {
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free_token(token);
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return process_str(event, arg, tok);
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@ -2995,6 +3042,7 @@ eval_num_arg(void *data, int size, struct event_format *event, struct print_arg
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break;
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case PRINT_FLAGS:
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case PRINT_SYMBOL:
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case PRINT_HEX:
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break;
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case PRINT_TYPE:
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val = eval_num_arg(data, size, event, arg->typecast.item);
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@ -3218,8 +3266,9 @@ static void print_str_arg(struct trace_seq *s, void *data, int size,
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unsigned long long val, fval;
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unsigned long addr;
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char *str;
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unsigned char *hex;
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int print;
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int len;
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int i, len;
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switch (arg->type) {
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case PRINT_NULL:
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@ -3284,6 +3333,23 @@ static void print_str_arg(struct trace_seq *s, void *data, int size,
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}
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}
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break;
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case PRINT_HEX:
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field = arg->hex.field->field.field;
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if (!field) {
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str = arg->hex.field->field.name;
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field = pevent_find_any_field(event, str);
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if (!field)
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die("field %s not found", str);
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arg->hex.field->field.field = field;
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}
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hex = data + field->offset;
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len = eval_num_arg(data, size, event, arg->hex.size);
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for (i = 0; i < len; i++) {
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if (i)
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trace_seq_putc(s, ' ');
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trace_seq_printf(s, "%02x", hex[i]);
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}
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break;
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case PRINT_TYPE:
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break;
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@ -4294,6 +4360,13 @@ static void print_args(struct print_arg *args)
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trace_seq_destroy(&s);
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printf(")");
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break;
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case PRINT_HEX:
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printf("__print_hex(");
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print_args(args->hex.field);
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printf(", ");
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print_args(args->hex.size);
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printf(")");
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break;
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case PRINT_STRING:
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case PRINT_BSTRING:
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printf("__get_str(%s)", args->string.string);
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@ -226,6 +226,11 @@ struct print_arg_symbol {
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struct print_flag_sym *symbols;
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};
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struct print_arg_hex {
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struct print_arg *field;
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struct print_arg *size;
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};
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struct print_arg_dynarray {
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struct format_field *field;
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struct print_arg *index;
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@ -253,6 +258,7 @@ enum print_arg_type {
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PRINT_FIELD,
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PRINT_FLAGS,
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PRINT_SYMBOL,
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PRINT_HEX,
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PRINT_TYPE,
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PRINT_STRING,
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PRINT_BSTRING,
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@ -270,6 +276,7 @@ struct print_arg {
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struct print_arg_typecast typecast;
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struct print_arg_flags flags;
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struct print_arg_symbol symbol;
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struct print_arg_hex hex;
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struct print_arg_func func;
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struct print_arg_string string;
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struct print_arg_op op;
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@ -209,6 +209,10 @@ static void define_event_symbols(struct event_format *event,
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define_symbolic_values(args->symbol.symbols, ev_name,
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cur_field_name);
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break;
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case PRINT_HEX:
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define_event_symbols(event, ev_name, args->hex.field);
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define_event_symbols(event, ev_name, args->hex.size);
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break;
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case PRINT_BSTRING:
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case PRINT_DYNAMIC_ARRAY:
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case PRINT_STRING:
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@ -166,6 +166,10 @@ static void define_event_symbols(struct event_format *event,
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define_values(PRINT_SYMBOL, args->symbol.symbols, ev_name,
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cur_field_name);
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break;
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case PRINT_HEX:
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define_event_symbols(event, ev_name, args->hex.field);
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define_event_symbols(event, ev_name, args->hex.size);
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break;
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case PRINT_STRING:
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break;
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case PRINT_TYPE:
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