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Commit ae44a2f6 authored by David Howells's avatar David Howells
Browse files

ASN.1: Add an ASN.1 compiler option to dump the element tree 



Add an ASN.1 compiler option to dump the element tree to stdout.

Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
Reviewed-By: default avatarDavid Woodhouse <David.Woodhouse@intel.com>
parent 459c15e5

scripts/asn1_compiler.c

+76 −12
Original line number Diff line number Diff line
@@ -13,6 +13,7 @@ 
#include <stdio.h>

#include <stdlib.h>

#include <stdint.h>

#include <stdbool.h>

#include <string.h>

#include <ctype.h>

#include <unistd.h>
@@ -311,9 +312,11 @@ struct token { 


static struct token *token_list;

static unsigned nr_tokens;

static _Bool verbose;

static bool verbose_opt;

static bool debug_opt;



#define debug(fmt, ...) do { if (verbose) printf(fmt, ## __VA_ARGS__); } while (0)

#define verbose(fmt, ...) do { if (verbose_opt) printf(fmt, ## __VA_ARGS__); } while (0)

#define debug(fmt, ...) do { if (debug_opt) printf(fmt, ## __VA_ARGS__); } while (0)



static int directive_compare(const void *_key, const void *_pdir)

{
@@ -518,7 +521,7 @@ static void tokenise(char *buffer, char *end) 
	}



	nr_tokens = tix;

	debug("Extracted %u tokens\n", nr_tokens);

	verbose("Extracted %u tokens\n", nr_tokens);



#if 0

	{
@@ -534,6 +537,7 @@ static void tokenise(char *buffer, char *end) 


static void build_type_list(void);

static void parse(void);

static void dump_elements(void);

static void render(FILE *out, FILE *hdr);



/*
@@ -548,16 +552,27 @@ int main(int argc, char **argv) 
	char *kbuild_verbose;

	int fd;



	kbuild_verbose = getenv("KBUILD_VERBOSE");

	if (kbuild_verbose)

		verbose_opt = atoi(kbuild_verbose);



	while (argc > 4) {

		if (strcmp(argv[1], "-v") == 0)

			verbose_opt = true;

		else if (strcmp(argv[1], "-d") == 0)

			debug_opt = true;

		else

			break;

		memmove(&argv[1], &argv[2], (argc - 2) * sizeof(char *));

		argc--;

	}



	if (argc != 4) {

		fprintf(stderr, "Format: %s <grammar-file> <c-file> <hdr-file>\n",

		fprintf(stderr, "Format: %s [-v] [-d] <grammar-file> <c-file> <hdr-file>\n",

			argv[0]);

		exit(2);

	}



	kbuild_verbose = getenv("KBUILD_VERBOSE");

	if (kbuild_verbose)

		verbose = atoi(kbuild_verbose);



	filename = argv[1];

	outputname = argv[2];

	headername = argv[3];
@@ -608,6 +623,7 @@ int main(int argc, char **argv) 
	tokenise(buffer, buffer + readlen);

	build_type_list();

	parse();

	dump_elements();



	out = fopen(outputname, "w");

	if (!out) {
@@ -756,7 +772,7 @@ static void build_type_list(void) 


	qsort(type_index, nr, sizeof(type_index[0]), type_index_compare);



	debug("Extracted %u types\n", nr_types);

	verbose("Extracted %u types\n", nr_types);

#if 0

	for (n = 0; n < nr_types; n++) {

		struct type *type = type_index[n];
@@ -801,7 +817,7 @@ static void parse(void) 


	} while (type++, !(type->flags & TYPE_STOP_MARKER));



	debug("Extracted %u actions\n", nr_actions);

	verbose("Extracted %u actions\n", nr_actions);

}



static struct element *element_list;
@@ -1192,6 +1208,54 @@ static struct element *parse_compound(struct token **_cursor, struct token *end, 
	exit(1);

}



static void dump_element(const struct element *e, int level)

{

	const struct element *c;

	const struct type *t = e->type_def;

	const char *name = e->name ? e->name->value : ".";

	int nsize = e->name ? e->name->size : 1;

	const char *tname = t && t->name ? t->name->value : ".";

	int tnsize = t && t->name ? t->name->size : 1;

	char tag[32];



	if (e->class == 0 && e->method == 0 && e->tag == 0)

		strcpy(tag, "<...>");

	else if (e->class == ASN1_UNIV)

		sprintf(tag, "%s %s %s",

			asn1_classes[e->class],

			asn1_methods[e->method],

			asn1_universal_tags[e->tag]);

	else

		sprintf(tag, "%s %s %u",

			asn1_classes[e->class],

			asn1_methods[e->method],

			e->tag);



	printf("%c%c%c%c%c %c %*s[*] \e[33m%s\e[m %*.*s %*.*s \e[35m%s\e[m\n",

	       e->flags & ELEMENT_IMPLICIT ? 'I' : '-',

	       e->flags & ELEMENT_EXPLICIT ? 'E' : '-',

	       e->flags & ELEMENT_TAG_SPECIFIED ? 'T' : '-',

	       e->flags & ELEMENT_SKIPPABLE ? 'S' : '-',

	       e->flags & ELEMENT_CONDITIONAL ? 'C' : '-',

	       "-tTqQcaro"[e->compound],

	       level, "",

	       tag,

	       tnsize, tnsize, tname,

	       nsize, nsize, name,

	       e->action ? e->action->name : "");

	if (e->compound == TYPE_REF)

		dump_element(e->type->type->element, level + 3);

	else

		for (c = e->children; c; c = c->next)

			dump_element(c, level + 3);

}



static void dump_elements(void)

{

	if (debug_opt)

		dump_element(type_list[0].element, 0);

}



static void render_element(FILE *out, struct element *e, struct element *tag);

static void render_out_of_line_list(FILE *out);
@@ -1293,7 +1357,7 @@ static void render(FILE *out, FILE *hdr) 
	}



	/* We do two passes - the first one calculates all the offsets */

	debug("Pass 1\n");

	verbose("Pass 1\n");

	nr_entries = 0;

	root = &type_list[0];

	render_element(NULL, root->element, NULL);
@@ -1304,7 +1368,7 @@ static void render(FILE *out, FILE *hdr) 
		e->flags &= ~ELEMENT_RENDERED;



	/* And then we actually render */

	debug("Pass 2\n");

	verbose("Pass 2\n");

	fprintf(out, "\n");

	fprintf(out, "static const unsigned char %s_machine[] = {\n",

		grammar_name);