440 lines
8.8 KiB
C
440 lines
8.8 KiB
C
/*
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SPDX-License-Identifier: GPL-2.0-only
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Copyright (C) 2007-2016 Arnaldo Carvalho de Melo <acme@kernel.org>
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*/
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#include <argp.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <malloc.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include "dwarves.h"
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#include "dutil.h"
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static struct conf_fprintf conf = {
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.emit_stats = 0,
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};
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typedef struct
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{
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struct list_head node;
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int linenum;
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struct tag *tag;
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struct cu *cu;
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} header_line_t;
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typedef struct
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{
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struct list_head node;
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const char *filename;
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struct list_head lines;
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} header_info_t;
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LIST_HEAD(headers);
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char *strncpy2(char *dest, const char *src, size_t n)
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{
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char *ret = strncpy(dest, src, n);
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dest[n] = 0;
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return ret;
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}
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static bool strcaseendswith(const char *s1, const char *s2)
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{
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int len1 = strlen(s1);
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int len2 = strlen(s2);
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if( len1 < len2 )
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return false;
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return !strcasecmp(s1 + len1 - len2, s2);
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}
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static int strcasestartswith( const char *s1, const char *s2 )
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{
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int len2 = strlen(s2);
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if( !strncasecmp(s1, s2, len2))
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return len2;
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return 0;
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}
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static bool filename_looks_like_header(const char *filename)
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{
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return strcaseendswith(filename, ".h");
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}
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static header_info_t *find_or_create_header(const char *filename)
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{
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header_info_t *header;
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if( strcasestartswith( filename, "../" ))
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return NULL;
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if( strcasestartswith( filename, "/usr/" ))
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return NULL;
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if( strcasestartswith( filename, "/fs/root/build/host/glibc-2.29/" ))
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return NULL;
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filename += strcasestartswith( filename, "/fs/root/build/x86_64/lccrt/" );
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filename += strcasestartswith( filename, "fs/root/build/x86_64/lccrt/" );
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filename += strcasestartswith( filename, "./" );
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filename += strcasestartswith( filename, ".obj/" );
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list_for_each_entry(header, &headers, node)
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{
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if( !strcmp( header->filename, filename ))
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{
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return header;
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}
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}
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header = malloc( sizeof( header_info_t ));
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header->filename = strdup(filename);
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INIT_LIST_HEAD(&header->lines);
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list_add_tail(&header->node, &headers);
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return header;
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}
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static bool find_or_insert_line(header_info_t *header, int linenum, struct tag *tag, struct cu *cu)
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{
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header_line_t *line, *new;
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list_for_each_entry_reverse(line, &header->lines, node)
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{
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if( line->linenum == linenum ) // && tag__orig_id(line->tag, line->cu) == tag__orig_id(tag, cu))
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{
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line->tag = tag;
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line->cu = cu;
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return false;
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}
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if( line->linenum <= linenum )
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break;
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}
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new = malloc( sizeof( header_line_t ));
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new->linenum = linenum;
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new->tag = tag;
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new->cu = cu;
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list_add(&new->node, &line->node);
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return true;
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}
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static void add_header_tag(const char *file, struct tag *tag, struct cu *cu, FILE *fp)
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{
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//static const char *prev = NULL;
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header_info_t *header;
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header = find_or_create_header(file);
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if( header )
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{
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find_or_insert_line(header, tag__decl_line(tag, cu), tag, cu);
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#if 0
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if( prev != header->filename )
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{
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fprintf( fp, "#include \"%s\"\n", header->filename);
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}
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prev = header->filename;
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#endif
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}
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}
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static void emit_tag(struct tag *tag, struct cu *cu, FILE *fp)
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{
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if (tag__is_struct(tag))
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class__find_holes(tag__class(tag));
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if (tag__is_pointer(tag))
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fprintf(fp, " /* pointer to %lld %s */\n", (unsigned long long)tag->type, dwarf_tag_name(tag->tag));
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else
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tag__fprintf(tag, cu, &conf, fp);
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fprintf(fp, " /* size: %zd */\n\n", tag__size(tag, cu));
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}
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static void print_types(struct cu *cu, struct tag *tag, bool header, FILE *fp)
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{
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const char *file;
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const char *name;
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switch(tag->tag)
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{
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case DW_TAG_base_type:
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case DW_TAG_const_type:
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case DW_TAG_array_type:
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case DW_TAG_pointer_type:
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case DW_TAG_reference_type:
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case DW_TAG_subroutine_type:
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case DW_TAG_unspecified_type:
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case DW_TAG_rvalue_reference_type:
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case DW_TAG_restrict_type:
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case DW_TAG_volatile_type:
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return;
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}
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name = type__name(tag__type(tag));
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// probably included
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if( name == NULL )
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return;
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if( name[0] == '\0' )
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return;
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file = header ? 0 : tag__decl_file(tag, cu);
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if( file && filename_looks_like_header( file ))
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{
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add_header_tag(file, tag, cu, fp);
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}
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else
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{
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// probably a forward declaration, skip for now
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if( tag__size(tag, cu) == 0 )
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return;
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emit_tag(tag, cu, fp);
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}
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}
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static void print_variables(struct cu *cu, struct tag *tag, bool header, FILE *fp)
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{
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const char *file = header ? 0 : tag__decl_file(tag, cu);
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if( file && filename_looks_like_header( file ))
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{
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add_header_tag(file, tag, cu, fp);
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}
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else
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{
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struct variable *variable = tag__variable(tag);
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if( variable->scope == VSCOPE_LOCAL )
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return;
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tag__fprintf(tag, cu, NULL, fp);
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fprintf(fp, " /* size: %zd scope: %s */\n", tag__size(tag, cu), variable__scope_str(variable));
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}
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}
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static void print_functions(struct cu *cu, struct function *function, bool header, FILE *fp)
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{
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const char *file;
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struct tag *tag = function__tag(function);
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file = header ? 0 : tag__decl_file(tag, cu);
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if( file && filename_looks_like_header( file ))
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{
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add_header_tag(file, tag, cu, fp);
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}
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else
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{
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tag__fprintf(tag, cu, &conf, fp);
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fputs("\n", fp);
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lexblock__fprintf(&function->lexblock, cu, function, 0,
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&conf, fp);
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fputs("\n\n", fp);
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}
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}
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#define NO_WRITE_FILES 0
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static void mkdir_p(const char *path)
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{
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#if NO_WRITE_FILES
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return;
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#else
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char orig_dir[2048];
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getcwd(orig_dir, sizeof( orig_dir ));
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for(const char *path2 = path; (path2 = strchr(path, '/')); path = path2 + 1)
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{
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char dir[128];
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strncpy2(dir, path, path2 - path);
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mkdir(dir, 0777);
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chdir(dir);
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}
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chdir(orig_dir);
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#endif
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}
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static void headers_print( void )
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{
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header_info_t *header;
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list_for_each_entry(header, &headers, node)
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{
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printf( "HEADER: %s\n", header->filename );
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mkdir_p( header->filename );
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FILE *fp = fopen( header->filename, "w+" );
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header_line_t *line;
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list_for_each_entry(line, &header->lines, node)
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{
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if( tag__is_type(line->tag))
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{
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print_types(line->cu, line->tag, true, fp);
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}
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else if( tag__is_variable(line->tag))
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{
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print_variables(line->cu, line->tag, true, fp );
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}
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else if( tag__is_function(line->tag))
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{
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print_functions(line->cu, tag__function(line->tag), true, fp );
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}
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}
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fclose(fp);
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}
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}
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static int cu__emit_tags(struct cu *cu)
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{
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uint32_t i;
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struct tag *tag;
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struct function *function;
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FILE *fp;
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if(!strncmp(cu->name, "../", 3))
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{
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return 0;
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}
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mkdir_p(cu->name);
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printf( "SOURCE: %s\n", cu->name );
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#if NO_WRITE_FILES
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fp = stdout;
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#else
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fp = fopen(cu->name, "w+");
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#endif
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fputs("/****************** Types: ******************/\n", fp);
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cu__for_each_type(cu, i, tag) {
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print_types(cu, tag, false, fp);
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}
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fputs("\n/****************** Variables: ******************/\n", fp);
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cu__for_each_variable(cu, i, tag) {
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print_variables(cu, tag, false, fp);
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}
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fputs("\n/****************** Functions: ******************/\n", fp);
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conf.no_semicolon = true;
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cu__for_each_function(cu, i, function) {
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print_functions(cu, function, false, fp);
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}
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conf.no_semicolon = false;
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fclose(fp);
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return 0;
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}
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static enum load_steal_kind pdwtags_stealer(struct cu *cu,
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struct conf_load *conf_load __maybe_unused,
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void *thr_data __maybe_unused)
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{
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cu__emit_tags(cu);
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return LSK__KEEPIT;
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}
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static struct conf_load pdwtags_conf_load = {
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.steal = pdwtags_stealer,
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.conf_fprintf = &conf,
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.extra_dbg_info = 1,
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.get_addr_info = 1,
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};
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/* Name and version of program. */
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ARGP_PROGRAM_VERSION_HOOK_DEF = dwarves_print_version;
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static const struct argp_option pdwtags__options[] = {
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{
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.name = "format_path",
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.key = 'F',
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.arg = "FORMAT_LIST",
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.doc = "List of debugging formats to try"
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},
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{
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.key = 'V',
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.name = "verbose",
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.doc = "show details",
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},
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{
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.name = NULL,
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}
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};
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static error_t pdwtags__options_parser(int key, char *arg __maybe_unused,
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struct argp_state *state)
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{
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switch (key) {
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case ARGP_KEY_INIT:
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if (state->child_inputs != NULL)
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state->child_inputs[0] = state->input;
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break;
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case 'F': pdwtags_conf_load.format_path = arg; break;
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case 'V': conf.show_decl_info = 1; break;
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default: return ARGP_ERR_UNKNOWN;
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}
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return 0;
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}
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static const char pdwtags__args_doc[] = "FILE";
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static struct argp pdwtags__argp = {
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.options = pdwtags__options,
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.parser = pdwtags__options_parser,
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.args_doc = pdwtags__args_doc,
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};
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int main(int argc, char *argv[])
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{
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int remaining, rc = EXIT_FAILURE, err;
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struct cus *cus = cus__new();
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if (dwarves__init() || cus == NULL) {
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fputs("pwdtags: insufficient memory\n", stderr);
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goto out;
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}
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dwarves__resolve_cacheline_size(&pdwtags_conf_load, 0);
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if (argp_parse(&pdwtags__argp, argc, argv, 0, &remaining, NULL) ||
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remaining == argc) {
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argp_help(&pdwtags__argp, stderr, ARGP_HELP_SEE, argv[0]);
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goto out;
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}
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err = cus__load_file(cus, &pdwtags_conf_load, argv[remaining]);
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if (err == 0) {
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rc = EXIT_SUCCESS;
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headers_print();
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goto out;
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}
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cus__fprintf_load_files_err(cus, "pdwtags", argv + remaining, err, stderr);
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out:
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cus__delete(cus);
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dwarves__exit();
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return rc;
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}
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