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-rw-r--r--scripts/genksyms/genksyms.c873
1 files changed, 873 insertions, 0 deletions
diff --git a/scripts/genksyms/genksyms.c b/scripts/genksyms/genksyms.c
new file mode 100644
index 000000000..23eff2341
--- /dev/null
+++ b/scripts/genksyms/genksyms.c
@@ -0,0 +1,873 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* Generate kernel symbol version hashes.
+ Copyright 1996, 1997 Linux International.
+
+ New implementation contributed by Richard Henderson <rth@tamu.edu>
+ Based on original work by Bjorn Ekwall <bj0rn@blox.se>
+
+ This file was part of the Linux modutils 2.4.22: moved back into the
+ kernel sources by Rusty Russell/Kai Germaschewski.
+
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <assert.h>
+#include <stdarg.h>
+#ifdef __GNU_LIBRARY__
+#include <getopt.h>
+#endif /* __GNU_LIBRARY__ */
+
+#include "genksyms.h"
+/*----------------------------------------------------------------------*/
+
+#define HASH_BUCKETS 4096
+
+static struct symbol *symtab[HASH_BUCKETS];
+static FILE *debugfile;
+
+int cur_line = 1;
+char *cur_filename, *source_file;
+int in_source_file;
+
+static int flag_debug, flag_dump_defs, flag_reference, flag_dump_types,
+ flag_preserve, flag_warnings, flag_rel_crcs;
+
+static int errors;
+static int nsyms;
+
+static struct symbol *expansion_trail;
+static struct symbol *visited_symbols;
+
+static const struct {
+ int n;
+ const char *name;
+} symbol_types[] = {
+ [SYM_NORMAL] = { 0, NULL},
+ [SYM_TYPEDEF] = {'t', "typedef"},
+ [SYM_ENUM] = {'e', "enum"},
+ [SYM_STRUCT] = {'s', "struct"},
+ [SYM_UNION] = {'u', "union"},
+ [SYM_ENUM_CONST] = {'E', "enum constant"},
+};
+
+static int equal_list(struct string_list *a, struct string_list *b);
+static void print_list(FILE * f, struct string_list *list);
+static struct string_list *concat_list(struct string_list *start, ...);
+static struct string_list *mk_node(const char *string);
+static void print_location(void);
+static void print_type_name(enum symbol_type type, const char *name);
+
+/*----------------------------------------------------------------------*/
+
+static const unsigned int crctab32[] = {
+ 0x00000000U, 0x77073096U, 0xee0e612cU, 0x990951baU, 0x076dc419U,
+ 0x706af48fU, 0xe963a535U, 0x9e6495a3U, 0x0edb8832U, 0x79dcb8a4U,
+ 0xe0d5e91eU, 0x97d2d988U, 0x09b64c2bU, 0x7eb17cbdU, 0xe7b82d07U,
+ 0x90bf1d91U, 0x1db71064U, 0x6ab020f2U, 0xf3b97148U, 0x84be41deU,
+ 0x1adad47dU, 0x6ddde4ebU, 0xf4d4b551U, 0x83d385c7U, 0x136c9856U,
+ 0x646ba8c0U, 0xfd62f97aU, 0x8a65c9ecU, 0x14015c4fU, 0x63066cd9U,
+ 0xfa0f3d63U, 0x8d080df5U, 0x3b6e20c8U, 0x4c69105eU, 0xd56041e4U,
+ 0xa2677172U, 0x3c03e4d1U, 0x4b04d447U, 0xd20d85fdU, 0xa50ab56bU,
+ 0x35b5a8faU, 0x42b2986cU, 0xdbbbc9d6U, 0xacbcf940U, 0x32d86ce3U,
+ 0x45df5c75U, 0xdcd60dcfU, 0xabd13d59U, 0x26d930acU, 0x51de003aU,
+ 0xc8d75180U, 0xbfd06116U, 0x21b4f4b5U, 0x56b3c423U, 0xcfba9599U,
+ 0xb8bda50fU, 0x2802b89eU, 0x5f058808U, 0xc60cd9b2U, 0xb10be924U,
+ 0x2f6f7c87U, 0x58684c11U, 0xc1611dabU, 0xb6662d3dU, 0x76dc4190U,
+ 0x01db7106U, 0x98d220bcU, 0xefd5102aU, 0x71b18589U, 0x06b6b51fU,
+ 0x9fbfe4a5U, 0xe8b8d433U, 0x7807c9a2U, 0x0f00f934U, 0x9609a88eU,
+ 0xe10e9818U, 0x7f6a0dbbU, 0x086d3d2dU, 0x91646c97U, 0xe6635c01U,
+ 0x6b6b51f4U, 0x1c6c6162U, 0x856530d8U, 0xf262004eU, 0x6c0695edU,
+ 0x1b01a57bU, 0x8208f4c1U, 0xf50fc457U, 0x65b0d9c6U, 0x12b7e950U,
+ 0x8bbeb8eaU, 0xfcb9887cU, 0x62dd1ddfU, 0x15da2d49U, 0x8cd37cf3U,
+ 0xfbd44c65U, 0x4db26158U, 0x3ab551ceU, 0xa3bc0074U, 0xd4bb30e2U,
+ 0x4adfa541U, 0x3dd895d7U, 0xa4d1c46dU, 0xd3d6f4fbU, 0x4369e96aU,
+ 0x346ed9fcU, 0xad678846U, 0xda60b8d0U, 0x44042d73U, 0x33031de5U,
+ 0xaa0a4c5fU, 0xdd0d7cc9U, 0x5005713cU, 0x270241aaU, 0xbe0b1010U,
+ 0xc90c2086U, 0x5768b525U, 0x206f85b3U, 0xb966d409U, 0xce61e49fU,
+ 0x5edef90eU, 0x29d9c998U, 0xb0d09822U, 0xc7d7a8b4U, 0x59b33d17U,
+ 0x2eb40d81U, 0xb7bd5c3bU, 0xc0ba6cadU, 0xedb88320U, 0x9abfb3b6U,
+ 0x03b6e20cU, 0x74b1d29aU, 0xead54739U, 0x9dd277afU, 0x04db2615U,
+ 0x73dc1683U, 0xe3630b12U, 0x94643b84U, 0x0d6d6a3eU, 0x7a6a5aa8U,
+ 0xe40ecf0bU, 0x9309ff9dU, 0x0a00ae27U, 0x7d079eb1U, 0xf00f9344U,
+ 0x8708a3d2U, 0x1e01f268U, 0x6906c2feU, 0xf762575dU, 0x806567cbU,
+ 0x196c3671U, 0x6e6b06e7U, 0xfed41b76U, 0x89d32be0U, 0x10da7a5aU,
+ 0x67dd4accU, 0xf9b9df6fU, 0x8ebeeff9U, 0x17b7be43U, 0x60b08ed5U,
+ 0xd6d6a3e8U, 0xa1d1937eU, 0x38d8c2c4U, 0x4fdff252U, 0xd1bb67f1U,
+ 0xa6bc5767U, 0x3fb506ddU, 0x48b2364bU, 0xd80d2bdaU, 0xaf0a1b4cU,
+ 0x36034af6U, 0x41047a60U, 0xdf60efc3U, 0xa867df55U, 0x316e8eefU,
+ 0x4669be79U, 0xcb61b38cU, 0xbc66831aU, 0x256fd2a0U, 0x5268e236U,
+ 0xcc0c7795U, 0xbb0b4703U, 0x220216b9U, 0x5505262fU, 0xc5ba3bbeU,
+ 0xb2bd0b28U, 0x2bb45a92U, 0x5cb36a04U, 0xc2d7ffa7U, 0xb5d0cf31U,
+ 0x2cd99e8bU, 0x5bdeae1dU, 0x9b64c2b0U, 0xec63f226U, 0x756aa39cU,
+ 0x026d930aU, 0x9c0906a9U, 0xeb0e363fU, 0x72076785U, 0x05005713U,
+ 0x95bf4a82U, 0xe2b87a14U, 0x7bb12baeU, 0x0cb61b38U, 0x92d28e9bU,
+ 0xe5d5be0dU, 0x7cdcefb7U, 0x0bdbdf21U, 0x86d3d2d4U, 0xf1d4e242U,
+ 0x68ddb3f8U, 0x1fda836eU, 0x81be16cdU, 0xf6b9265bU, 0x6fb077e1U,
+ 0x18b74777U, 0x88085ae6U, 0xff0f6a70U, 0x66063bcaU, 0x11010b5cU,
+ 0x8f659effU, 0xf862ae69U, 0x616bffd3U, 0x166ccf45U, 0xa00ae278U,
+ 0xd70dd2eeU, 0x4e048354U, 0x3903b3c2U, 0xa7672661U, 0xd06016f7U,
+ 0x4969474dU, 0x3e6e77dbU, 0xaed16a4aU, 0xd9d65adcU, 0x40df0b66U,
+ 0x37d83bf0U, 0xa9bcae53U, 0xdebb9ec5U, 0x47b2cf7fU, 0x30b5ffe9U,
+ 0xbdbdf21cU, 0xcabac28aU, 0x53b39330U, 0x24b4a3a6U, 0xbad03605U,
+ 0xcdd70693U, 0x54de5729U, 0x23d967bfU, 0xb3667a2eU, 0xc4614ab8U,
+ 0x5d681b02U, 0x2a6f2b94U, 0xb40bbe37U, 0xc30c8ea1U, 0x5a05df1bU,
+ 0x2d02ef8dU
+};
+
+static unsigned long partial_crc32_one(unsigned char c, unsigned long crc)
+{
+ return crctab32[(crc ^ c) & 0xff] ^ (crc >> 8);
+}
+
+static unsigned long partial_crc32(const char *s, unsigned long crc)
+{
+ while (*s)
+ crc = partial_crc32_one(*s++, crc);
+ return crc;
+}
+
+static unsigned long crc32(const char *s)
+{
+ return partial_crc32(s, 0xffffffff) ^ 0xffffffff;
+}
+
+/*----------------------------------------------------------------------*/
+
+static enum symbol_type map_to_ns(enum symbol_type t)
+{
+ switch (t) {
+ case SYM_ENUM_CONST:
+ case SYM_NORMAL:
+ case SYM_TYPEDEF:
+ return SYM_NORMAL;
+ case SYM_ENUM:
+ case SYM_STRUCT:
+ case SYM_UNION:
+ return SYM_STRUCT;
+ }
+ return t;
+}
+
+struct symbol *find_symbol(const char *name, enum symbol_type ns, int exact)
+{
+ unsigned long h = crc32(name) % HASH_BUCKETS;
+ struct symbol *sym;
+
+ for (sym = symtab[h]; sym; sym = sym->hash_next)
+ if (map_to_ns(sym->type) == map_to_ns(ns) &&
+ strcmp(name, sym->name) == 0 &&
+ sym->is_declared)
+ break;
+
+ if (exact && sym && sym->type != ns)
+ return NULL;
+ return sym;
+}
+
+static int is_unknown_symbol(struct symbol *sym)
+{
+ struct string_list *defn;
+
+ return ((sym->type == SYM_STRUCT ||
+ sym->type == SYM_UNION ||
+ sym->type == SYM_ENUM) &&
+ (defn = sym->defn) && defn->tag == SYM_NORMAL &&
+ strcmp(defn->string, "}") == 0 &&
+ (defn = defn->next) && defn->tag == SYM_NORMAL &&
+ strcmp(defn->string, "UNKNOWN") == 0 &&
+ (defn = defn->next) && defn->tag == SYM_NORMAL &&
+ strcmp(defn->string, "{") == 0);
+}
+
+static struct symbol *__add_symbol(const char *name, enum symbol_type type,
+ struct string_list *defn, int is_extern,
+ int is_reference)
+{
+ unsigned long h;
+ struct symbol *sym;
+ enum symbol_status status = STATUS_UNCHANGED;
+ /* The parser adds symbols in the order their declaration completes,
+ * so it is safe to store the value of the previous enum constant in
+ * a static variable.
+ */
+ static int enum_counter;
+ static struct string_list *last_enum_expr;
+
+ if (type == SYM_ENUM_CONST) {
+ if (defn) {
+ free_list(last_enum_expr, NULL);
+ last_enum_expr = copy_list_range(defn, NULL);
+ enum_counter = 1;
+ } else {
+ struct string_list *expr;
+ char buf[20];
+
+ snprintf(buf, sizeof(buf), "%d", enum_counter++);
+ if (last_enum_expr) {
+ expr = copy_list_range(last_enum_expr, NULL);
+ defn = concat_list(mk_node("("),
+ expr,
+ mk_node(")"),
+ mk_node("+"),
+ mk_node(buf), NULL);
+ } else {
+ defn = mk_node(buf);
+ }
+ }
+ } else if (type == SYM_ENUM) {
+ free_list(last_enum_expr, NULL);
+ last_enum_expr = NULL;
+ enum_counter = 0;
+ if (!name)
+ /* Anonymous enum definition, nothing more to do */
+ return NULL;
+ }
+
+ h = crc32(name) % HASH_BUCKETS;
+ for (sym = symtab[h]; sym; sym = sym->hash_next) {
+ if (map_to_ns(sym->type) == map_to_ns(type) &&
+ strcmp(name, sym->name) == 0) {
+ if (is_reference)
+ /* fall through */ ;
+ else if (sym->type == type &&
+ equal_list(sym->defn, defn)) {
+ if (!sym->is_declared && sym->is_override) {
+ print_location();
+ print_type_name(type, name);
+ fprintf(stderr, " modversion is "
+ "unchanged\n");
+ }
+ sym->is_declared = 1;
+ return sym;
+ } else if (!sym->is_declared) {
+ if (sym->is_override && flag_preserve) {
+ print_location();
+ fprintf(stderr, "ignoring ");
+ print_type_name(type, name);
+ fprintf(stderr, " modversion change\n");
+ sym->is_declared = 1;
+ return sym;
+ } else {
+ status = is_unknown_symbol(sym) ?
+ STATUS_DEFINED : STATUS_MODIFIED;
+ }
+ } else {
+ error_with_pos("redefinition of %s", name);
+ return sym;
+ }
+ break;
+ }
+ }
+
+ if (sym) {
+ struct symbol **psym;
+
+ for (psym = &symtab[h]; *psym; psym = &(*psym)->hash_next) {
+ if (*psym == sym) {
+ *psym = sym->hash_next;
+ break;
+ }
+ }
+ --nsyms;
+ }
+
+ sym = xmalloc(sizeof(*sym));
+ sym->name = name;
+ sym->type = type;
+ sym->defn = defn;
+ sym->expansion_trail = NULL;
+ sym->visited = NULL;
+ sym->is_extern = is_extern;
+
+ sym->hash_next = symtab[h];
+ symtab[h] = sym;
+
+ sym->is_declared = !is_reference;
+ sym->status = status;
+ sym->is_override = 0;
+
+ if (flag_debug) {
+ if (symbol_types[type].name)
+ fprintf(debugfile, "Defn for %s %s == <",
+ symbol_types[type].name, name);
+ else
+ fprintf(debugfile, "Defn for type%d %s == <",
+ type, name);
+ if (is_extern)
+ fputs("extern ", debugfile);
+ print_list(debugfile, defn);
+ fputs(">\n", debugfile);
+ }
+
+ ++nsyms;
+ return sym;
+}
+
+struct symbol *add_symbol(const char *name, enum symbol_type type,
+ struct string_list *defn, int is_extern)
+{
+ return __add_symbol(name, type, defn, is_extern, 0);
+}
+
+static struct symbol *add_reference_symbol(const char *name, enum symbol_type type,
+ struct string_list *defn, int is_extern)
+{
+ return __add_symbol(name, type, defn, is_extern, 1);
+}
+
+/*----------------------------------------------------------------------*/
+
+void free_node(struct string_list *node)
+{
+ free(node->string);
+ free(node);
+}
+
+void free_list(struct string_list *s, struct string_list *e)
+{
+ while (s != e) {
+ struct string_list *next = s->next;
+ free_node(s);
+ s = next;
+ }
+}
+
+static struct string_list *mk_node(const char *string)
+{
+ struct string_list *newnode;
+
+ newnode = xmalloc(sizeof(*newnode));
+ newnode->string = xstrdup(string);
+ newnode->tag = SYM_NORMAL;
+ newnode->next = NULL;
+
+ return newnode;
+}
+
+static struct string_list *concat_list(struct string_list *start, ...)
+{
+ va_list ap;
+ struct string_list *n, *n2;
+
+ if (!start)
+ return NULL;
+ for (va_start(ap, start); (n = va_arg(ap, struct string_list *));) {
+ for (n2 = n; n2->next; n2 = n2->next)
+ ;
+ n2->next = start;
+ start = n;
+ }
+ va_end(ap);
+ return start;
+}
+
+struct string_list *copy_node(struct string_list *node)
+{
+ struct string_list *newnode;
+
+ newnode = xmalloc(sizeof(*newnode));
+ newnode->string = xstrdup(node->string);
+ newnode->tag = node->tag;
+
+ return newnode;
+}
+
+struct string_list *copy_list_range(struct string_list *start,
+ struct string_list *end)
+{
+ struct string_list *res, *n;
+
+ if (start == end)
+ return NULL;
+ n = res = copy_node(start);
+ for (start = start->next; start != end; start = start->next) {
+ n->next = copy_node(start);
+ n = n->next;
+ }
+ n->next = NULL;
+ return res;
+}
+
+static int equal_list(struct string_list *a, struct string_list *b)
+{
+ while (a && b) {
+ if (a->tag != b->tag || strcmp(a->string, b->string))
+ return 0;
+ a = a->next;
+ b = b->next;
+ }
+
+ return !a && !b;
+}
+
+#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
+
+static struct string_list *read_node(FILE *f)
+{
+ char buffer[256];
+ struct string_list node = {
+ .string = buffer,
+ .tag = SYM_NORMAL };
+ int c, in_string = 0;
+
+ while ((c = fgetc(f)) != EOF) {
+ if (!in_string && c == ' ') {
+ if (node.string == buffer)
+ continue;
+ break;
+ } else if (c == '"') {
+ in_string = !in_string;
+ } else if (c == '\n') {
+ if (node.string == buffer)
+ return NULL;
+ ungetc(c, f);
+ break;
+ }
+ if (node.string >= buffer + sizeof(buffer) - 1) {
+ fprintf(stderr, "Token too long\n");
+ exit(1);
+ }
+ *node.string++ = c;
+ }
+ if (node.string == buffer)
+ return NULL;
+ *node.string = 0;
+ node.string = buffer;
+
+ if (node.string[1] == '#') {
+ size_t n;
+
+ for (n = 0; n < ARRAY_SIZE(symbol_types); n++) {
+ if (node.string[0] == symbol_types[n].n) {
+ node.tag = n;
+ node.string += 2;
+ return copy_node(&node);
+ }
+ }
+ fprintf(stderr, "Unknown type %c\n", node.string[0]);
+ exit(1);
+ }
+ return copy_node(&node);
+}
+
+static void read_reference(FILE *f)
+{
+ while (!feof(f)) {
+ struct string_list *defn = NULL;
+ struct string_list *sym, *def;
+ int is_extern = 0, is_override = 0;
+ struct symbol *subsym;
+
+ sym = read_node(f);
+ if (sym && sym->tag == SYM_NORMAL &&
+ !strcmp(sym->string, "override")) {
+ is_override = 1;
+ free_node(sym);
+ sym = read_node(f);
+ }
+ if (!sym)
+ continue;
+ def = read_node(f);
+ if (def && def->tag == SYM_NORMAL &&
+ !strcmp(def->string, "extern")) {
+ is_extern = 1;
+ free_node(def);
+ def = read_node(f);
+ }
+ while (def) {
+ def->next = defn;
+ defn = def;
+ def = read_node(f);
+ }
+ subsym = add_reference_symbol(xstrdup(sym->string), sym->tag,
+ defn, is_extern);
+ subsym->is_override = is_override;
+ free_node(sym);
+ }
+}
+
+static void print_node(FILE * f, struct string_list *list)
+{
+ if (symbol_types[list->tag].n) {
+ putc(symbol_types[list->tag].n, f);
+ putc('#', f);
+ }
+ fputs(list->string, f);
+}
+
+static void print_list(FILE * f, struct string_list *list)
+{
+ struct string_list **e, **b;
+ struct string_list *tmp, **tmp2;
+ int elem = 1;
+
+ if (list == NULL) {
+ fputs("(nil)", f);
+ return;
+ }
+
+ tmp = list;
+ while ((tmp = tmp->next) != NULL)
+ elem++;
+
+ b = alloca(elem * sizeof(*e));
+ e = b + elem;
+ tmp2 = e - 1;
+
+ (*tmp2--) = list;
+ while ((list = list->next) != NULL)
+ *(tmp2--) = list;
+
+ while (b != e) {
+ print_node(f, *b++);
+ putc(' ', f);
+ }
+}
+
+static unsigned long expand_and_crc_sym(struct symbol *sym, unsigned long crc)
+{
+ struct string_list *list = sym->defn;
+ struct string_list **e, **b;
+ struct string_list *tmp, **tmp2;
+ int elem = 1;
+
+ if (!list)
+ return crc;
+
+ tmp = list;
+ while ((tmp = tmp->next) != NULL)
+ elem++;
+
+ b = alloca(elem * sizeof(*e));
+ e = b + elem;
+ tmp2 = e - 1;
+
+ *(tmp2--) = list;
+ while ((list = list->next) != NULL)
+ *(tmp2--) = list;
+
+ while (b != e) {
+ struct string_list *cur;
+ struct symbol *subsym;
+
+ cur = *(b++);
+ switch (cur->tag) {
+ case SYM_NORMAL:
+ if (flag_dump_defs)
+ fprintf(debugfile, "%s ", cur->string);
+ crc = partial_crc32(cur->string, crc);
+ crc = partial_crc32_one(' ', crc);
+ break;
+
+ case SYM_ENUM_CONST:
+ case SYM_TYPEDEF:
+ subsym = find_symbol(cur->string, cur->tag, 0);
+ /* FIXME: Bad reference files can segfault here. */
+ if (subsym->expansion_trail) {
+ if (flag_dump_defs)
+ fprintf(debugfile, "%s ", cur->string);
+ crc = partial_crc32(cur->string, crc);
+ crc = partial_crc32_one(' ', crc);
+ } else {
+ subsym->expansion_trail = expansion_trail;
+ expansion_trail = subsym;
+ crc = expand_and_crc_sym(subsym, crc);
+ }
+ break;
+
+ case SYM_STRUCT:
+ case SYM_UNION:
+ case SYM_ENUM:
+ subsym = find_symbol(cur->string, cur->tag, 0);
+ if (!subsym) {
+ struct string_list *n;
+
+ error_with_pos("expand undefined %s %s",
+ symbol_types[cur->tag].name,
+ cur->string);
+ n = concat_list(mk_node
+ (symbol_types[cur->tag].name),
+ mk_node(cur->string),
+ mk_node("{"),
+ mk_node("UNKNOWN"),
+ mk_node("}"), NULL);
+ subsym =
+ add_symbol(cur->string, cur->tag, n, 0);
+ }
+ if (subsym->expansion_trail) {
+ if (flag_dump_defs) {
+ fprintf(debugfile, "%s %s ",
+ symbol_types[cur->tag].name,
+ cur->string);
+ }
+
+ crc = partial_crc32(symbol_types[cur->tag].name,
+ crc);
+ crc = partial_crc32_one(' ', crc);
+ crc = partial_crc32(cur->string, crc);
+ crc = partial_crc32_one(' ', crc);
+ } else {
+ subsym->expansion_trail = expansion_trail;
+ expansion_trail = subsym;
+ crc = expand_and_crc_sym(subsym, crc);
+ }
+ break;
+ }
+ }
+
+ {
+ static struct symbol **end = &visited_symbols;
+
+ if (!sym->visited) {
+ *end = sym;
+ end = &sym->visited;
+ sym->visited = (struct symbol *)-1L;
+ }
+ }
+
+ return crc;
+}
+
+void export_symbol(const char *name)
+{
+ struct symbol *sym;
+
+ sym = find_symbol(name, SYM_NORMAL, 0);
+ if (!sym)
+ error_with_pos("export undefined symbol %s", name);
+ else {
+ unsigned long crc;
+ int has_changed = 0;
+
+ if (flag_dump_defs)
+ fprintf(debugfile, "Export %s == <", name);
+
+ expansion_trail = (struct symbol *)-1L;
+
+ sym->expansion_trail = expansion_trail;
+ expansion_trail = sym;
+ crc = expand_and_crc_sym(sym, 0xffffffff) ^ 0xffffffff;
+
+ sym = expansion_trail;
+ while (sym != (struct symbol *)-1L) {
+ struct symbol *n = sym->expansion_trail;
+
+ if (sym->status != STATUS_UNCHANGED) {
+ if (!has_changed) {
+ print_location();
+ fprintf(stderr, "%s: %s: modversion "
+ "changed because of changes "
+ "in ", flag_preserve ? "error" :
+ "warning", name);
+ } else
+ fprintf(stderr, ", ");
+ print_type_name(sym->type, sym->name);
+ if (sym->status == STATUS_DEFINED)
+ fprintf(stderr, " (became defined)");
+ has_changed = 1;
+ if (flag_preserve)
+ errors++;
+ }
+ sym->expansion_trail = 0;
+ sym = n;
+ }
+ if (has_changed)
+ fprintf(stderr, "\n");
+
+ if (flag_dump_defs)
+ fputs(">\n", debugfile);
+
+ /* Used as a linker script. */
+ printf(!flag_rel_crcs ? "__crc_%s = 0x%08lx;\n" :
+ "SECTIONS { .rodata : ALIGN(4) { "
+ "__crc_%s = .; LONG(0x%08lx); } }\n",
+ name, crc);
+ }
+}
+
+/*----------------------------------------------------------------------*/
+
+static void print_location(void)
+{
+ fprintf(stderr, "%s:%d: ", cur_filename ? : "<stdin>", cur_line);
+}
+
+static void print_type_name(enum symbol_type type, const char *name)
+{
+ if (symbol_types[type].name)
+ fprintf(stderr, "%s %s", symbol_types[type].name, name);
+ else
+ fprintf(stderr, "%s", name);
+}
+
+void error_with_pos(const char *fmt, ...)
+{
+ va_list args;
+
+ if (flag_warnings) {
+ print_location();
+
+ va_start(args, fmt);
+ vfprintf(stderr, fmt, args);
+ va_end(args);
+ putc('\n', stderr);
+
+ errors++;
+ }
+}
+
+static void genksyms_usage(void)
+{
+ fputs("Usage:\n" "genksyms [-adDTwqhVR] > /path/to/.tmp_obj.ver\n" "\n"
+#ifdef __GNU_LIBRARY__
+ " -s, --symbol-prefix Select symbol prefix\n"
+ " -d, --debug Increment the debug level (repeatable)\n"
+ " -D, --dump Dump expanded symbol defs (for debugging only)\n"
+ " -r, --reference file Read reference symbols from a file\n"
+ " -T, --dump-types file Dump expanded types into file\n"
+ " -p, --preserve Preserve reference modversions or fail\n"
+ " -w, --warnings Enable warnings\n"
+ " -q, --quiet Disable warnings (default)\n"
+ " -h, --help Print this message\n"
+ " -V, --version Print the release version\n"
+ " -R, --relative-crc Emit section relative symbol CRCs\n"
+#else /* __GNU_LIBRARY__ */
+ " -s Select symbol prefix\n"
+ " -d Increment the debug level (repeatable)\n"
+ " -D Dump expanded symbol defs (for debugging only)\n"
+ " -r file Read reference symbols from a file\n"
+ " -T file Dump expanded types into file\n"
+ " -p Preserve reference modversions or fail\n"
+ " -w Enable warnings\n"
+ " -q Disable warnings (default)\n"
+ " -h Print this message\n"
+ " -V Print the release version\n"
+ " -R Emit section relative symbol CRCs\n"
+#endif /* __GNU_LIBRARY__ */
+ , stderr);
+}
+
+int main(int argc, char **argv)
+{
+ FILE *dumpfile = NULL, *ref_file = NULL;
+ int o;
+
+#ifdef __GNU_LIBRARY__
+ struct option long_opts[] = {
+ {"debug", 0, 0, 'd'},
+ {"warnings", 0, 0, 'w'},
+ {"quiet", 0, 0, 'q'},
+ {"dump", 0, 0, 'D'},
+ {"reference", 1, 0, 'r'},
+ {"dump-types", 1, 0, 'T'},
+ {"preserve", 0, 0, 'p'},
+ {"version", 0, 0, 'V'},
+ {"help", 0, 0, 'h'},
+ {"relative-crc", 0, 0, 'R'},
+ {0, 0, 0, 0}
+ };
+
+ while ((o = getopt_long(argc, argv, "s:dwqVDr:T:phR",
+ &long_opts[0], NULL)) != EOF)
+#else /* __GNU_LIBRARY__ */
+ while ((o = getopt(argc, argv, "s:dwqVDr:T:phR")) != EOF)
+#endif /* __GNU_LIBRARY__ */
+ switch (o) {
+ case 'd':
+ flag_debug++;
+ break;
+ case 'w':
+ flag_warnings = 1;
+ break;
+ case 'q':
+ flag_warnings = 0;
+ break;
+ case 'V':
+ fputs("genksyms version 2.5.60\n", stderr);
+ break;
+ case 'D':
+ flag_dump_defs = 1;
+ break;
+ case 'r':
+ flag_reference = 1;
+ ref_file = fopen(optarg, "r");
+ if (!ref_file) {
+ perror(optarg);
+ return 1;
+ }
+ break;
+ case 'T':
+ flag_dump_types = 1;
+ dumpfile = fopen(optarg, "w");
+ if (!dumpfile) {
+ perror(optarg);
+ return 1;
+ }
+ break;
+ case 'p':
+ flag_preserve = 1;
+ break;
+ case 'h':
+ genksyms_usage();
+ return 0;
+ case 'R':
+ flag_rel_crcs = 1;
+ break;
+ default:
+ genksyms_usage();
+ return 1;
+ }
+ {
+ extern int yydebug;
+ extern int yy_flex_debug;
+
+ yydebug = (flag_debug > 1);
+ yy_flex_debug = (flag_debug > 2);
+
+ debugfile = stderr;
+ /* setlinebuf(debugfile); */
+ }
+
+ if (flag_reference) {
+ read_reference(ref_file);
+ fclose(ref_file);
+ }
+
+ yyparse();
+
+ if (flag_dump_types && visited_symbols) {
+ while (visited_symbols != (struct symbol *)-1L) {
+ struct symbol *sym = visited_symbols;
+
+ if (sym->is_override)
+ fputs("override ", dumpfile);
+ if (symbol_types[sym->type].n) {
+ putc(symbol_types[sym->type].n, dumpfile);
+ putc('#', dumpfile);
+ }
+ fputs(sym->name, dumpfile);
+ putc(' ', dumpfile);
+ if (sym->is_extern)
+ fputs("extern ", dumpfile);
+ print_list(dumpfile, sym->defn);
+ putc('\n', dumpfile);
+
+ visited_symbols = sym->visited;
+ sym->visited = NULL;
+ }
+ }
+
+ if (flag_debug) {
+ fprintf(debugfile, "Hash table occupancy %d/%d = %g\n",
+ nsyms, HASH_BUCKETS,
+ (double)nsyms / (double)HASH_BUCKETS);
+ }
+
+ if (dumpfile)
+ fclose(dumpfile);
+
+ return errors != 0;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-24 17:42:10 +0000