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-rw-r--r--dwarfdump/dwconf.c1424
1 files changed, 1424 insertions, 0 deletions
diff --git a/dwarfdump/dwconf.c b/dwarfdump/dwconf.c
new file mode 100644
index 0000000..1b59053
--- /dev/null
+++ b/dwarfdump/dwconf.c
@@ -0,0 +1,1424 @@
+/*
+ Copyright (C) 2006 Silicon Graphics, Inc. All Rights Reserved.
+ Portions Copyright 2011 David Anderson. All Rights Reserved.
+
+ This program is free software; you can redistribute it and/or modify it
+ under the terms of version 2 of the GNU General Public License as
+ published by the Free Software Foundation.
+
+ This program is distributed in the hope that it would be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+ Further, this software is distributed without any warranty that it is
+ free of the rightful claim of any third person regarding infringement
+ or the like. Any license provided herein, whether implied or
+ otherwise, applies only to this software file. Patent licenses, if
+ any, provided herein do not apply to combinations of this program with
+ other software, or any other product whatsoever.
+
+ You should have received a copy of the GNU General Public License along
+ with this program; if not, write the Free Software Foundation, Inc., 51
+ Franklin Street - Fifth Floor, Boston MA 02110-1301, USA.
+
+ Contact information: Silicon Graphics, Inc., 1500 Crittenden Lane,
+ Mountain View, CA 94043, or:
+
+ http://www.sgi.com
+
+ For further information regarding this notice, see:
+
+ http://oss.sgi.com/projects/GenInfo/NoticeExplan
+
+
+ $Header: /plroot/cmplrs.src/v7.4.5m/.RCS/PL/dwarfdump/RCS/dwconf.c,v 1.4 2006/04/18 18:05:57 davea Exp $ */
+
+
+/* Windows specific */
+#ifdef HAVE_STDAFX_H
+#include "stdafx.h"
+#endif /* HAVE_STDAFX_H */
+
+#include "globals.h"
+#include "dwarf.h"
+#include "libdwarf.h"
+
+#include <ctype.h>
+#include "dwconf.h"
+#include "makename.h"
+
+extern int verbose;
+
+/* The nesting level is arbitrary, 2 should suffice.
+ But at least this prevents an infinite loop.
+*/
+#define MAX_NEST_LEVEL 3
+
+struct token_s {
+ unsigned tk_len;
+ char *tk_data;
+};
+enum linetype_e {
+ LT_ERROR,
+ LT_COMMENT,
+ LT_BLANK,
+ LT_BEGINABI,
+ LT_REG,
+ LT_FRAME_INTERFACE,
+ LT_CFA_REG,
+ LT_INITIAL_REG_VALUE,
+ LT_SAME_VAL_REG,
+ LT_UNDEFINED_VAL_REG,
+ LT_REG_TABLE_SIZE,
+ LT_ADDRESS_SIZE,
+ LT_INCLUDEABI,
+ LT_ENDABI
+};
+
+struct comtable_s {
+ enum linetype_e type;
+ char *name;
+ size_t namelen;
+};
+
+static int errcount = 0; /* Count errors found in this scan of
+ the configuration file. */
+
+static char name_begin_abi[] = "beginabi:";
+static char name_reg[] = "reg:";
+static char name_frame_interface[] = "frame_interface:";
+static char name_cfa_reg[] = "cfa_reg:";
+static char name_initial_reg_value[] = "initial_reg_value:";
+static char name_same_val_reg[] = "same_val_reg:";
+static char name_undefined_val_reg[] = "undefined_val_reg:";
+static char name_reg_table_size[] = "reg_table_size:";
+static char name_address_size[] = "address_size:";
+static char name_includeabi[] = "includeabi:";
+static char name_endabi[] = "endabi:";
+
+static struct comtable_s comtable[] = {
+ {LT_BEGINABI, name_begin_abi},
+ {LT_REG, name_reg},
+ {LT_FRAME_INTERFACE, name_frame_interface},
+ {LT_CFA_REG, name_cfa_reg},
+ {LT_INITIAL_REG_VALUE, name_initial_reg_value},
+ {LT_SAME_VAL_REG, name_same_val_reg},
+ {LT_UNDEFINED_VAL_REG, name_undefined_val_reg},
+ {LT_REG_TABLE_SIZE, name_reg_table_size},
+ {LT_ADDRESS_SIZE, name_address_size},
+ {LT_INCLUDEABI, name_includeabi},
+ {LT_ENDABI, name_endabi},
+};
+
+struct conf_internal_s {
+ unsigned long beginabi_lineno;
+ unsigned long frame_interface_lineno;
+ unsigned long initial_reg_value_lineno;
+ unsigned long reg_table_size_lineno;
+ unsigned long address_size_lineno;
+ unsigned long same_val_reg_lineno;
+ unsigned long undefined_val_reg_lineno;
+ unsigned long cfa_reg_lineno;
+ unsigned long regcount;
+ struct dwconf_s * conf_out;
+ const char * conf_name_used;
+ char ** conf_defaults;
+};
+static void
+init_conf_internal(struct conf_internal_s *s,
+ struct dwconf_s * conf_out)
+{
+ s->beginabi_lineno = 0;
+ s->frame_interface_lineno = 0;
+ s->initial_reg_value_lineno = 0;
+ s->reg_table_size_lineno = 0;
+ s->address_size_lineno = 0;
+ s->same_val_reg_lineno = 0;
+ s->undefined_val_reg_lineno = 0;
+ s->cfa_reg_lineno = 0;
+ s->cfa_reg_lineno = 0;
+ s->conf_name_used = 0;
+ s->conf_defaults = 0;
+ s->regcount = 0;
+ s->conf_out = conf_out;
+}
+
+static int size_of_comtable = sizeof(comtable) / sizeof(comtable[0]);
+
+static FILE *find_a_file(const char *named_file, char **defaults,
+ const char** name_used);
+static int find_abi_start(FILE * stream, const char *abi_name, long *offset,
+ unsigned long *lineno_out);
+static int parse_abi(FILE * stream, const char *fname, const char *abiname,
+ struct conf_internal_s *out, unsigned long lineno, unsigned nest_level);
+static char *get_token(char *cp, struct token_s *outtok);
+
+/* This finds a dwarfdump.conf file and
+ then parses it. It updates
+ conf_out as appropriate.
+
+ This finds the first file (looking in a set of places)
+ with that name. It then looks for the right ABI entry.
+ If the first file it finds does not have that ABI entry it
+ gives up.
+
+ It would also be reasonable to search every 'dwarfdump.conf'
+ it finds for the abi. But we stop at the first dwarfdump.conf
+ we find.
+ This is the internal call to get the conf data to implement
+ a crude 'includeabi' feature.
+
+ Returns 0 if no errors found, else returns > 0.
+*/
+static int
+find_conf_file_and_read_config_inner(const char *named_file,
+ const char *named_abi,
+ struct conf_internal_s *conf_internal,
+ unsigned nest_level)
+{
+
+ FILE *conf_stream = 0;
+ const char *name_used = 0;
+ long offset = 0;
+ int res = FALSE;
+ unsigned long lineno = 0;
+
+ errcount = 0;
+
+ conf_stream = find_a_file(named_file, conf_internal->conf_defaults,
+ &name_used);
+ if (!conf_stream) {
+ ++errcount;
+ printf("dwarfdump found no file %s!\n",
+ named_file ? named_file : "readable for configuration. "
+ "(add options -v -v to see what file names tried)\n");
+ return errcount;
+ }
+ if (verbose > 1) {
+ printf("dwarfdump using configuration file %s\n", name_used);
+ }
+ conf_internal->conf_name_used = name_used;
+
+ res = find_abi_start(conf_stream, named_abi, &offset, &lineno);
+ if (errcount > 0) {
+ ++errcount;
+ printf("dwarfdump found no ABI %s in file %s.\n",
+ named_abi, name_used);
+ return errcount;
+ }
+ res = fseek(conf_stream, offset, SEEK_SET);
+ if (res != 0) {
+ ++errcount;
+ printf("dwarfdump seek to %ld offset in %s failed!\n",
+ offset, name_used);
+ return errcount;
+ }
+ parse_abi(conf_stream, name_used, named_abi, conf_internal, lineno,
+ nest_level);
+ fclose(conf_stream);
+ return errcount;
+}
+
+/* This is the external-facing call to get the conf data. */
+int
+find_conf_file_and_read_config(const char *named_file,
+ const char *named_abi, char **defaults,
+ struct dwconf_s *conf_out)
+{
+ int res = 0;
+ struct conf_internal_s conf_internal;
+ init_conf_file_data(conf_out);
+ init_conf_internal(&conf_internal,conf_out);
+ conf_internal.conf_defaults = defaults;
+ res = find_conf_file_and_read_config_inner(named_file,
+ named_abi,
+ &conf_internal,0);
+ return res;
+}
+
+/* Given path strings, attempt to make a canonical file name:
+ that is, avoid superfluous '/' so that no
+ '//' (or worse) is created in the output. The path components
+ are to be separated so at least one '/'
+ is to appear between the two 'input strings' when
+ creating the output.
+*/
+static char *
+canonical_append(char *target, unsigned int target_size,
+ const char *first_string, const char *second_string)
+{
+ size_t firstlen = strlen(first_string);
+
+ /* +1 +1: Leave room for added "/" and final NUL, though that is
+ overkill, as we drop a NUL byte too. */
+ if ((firstlen + strlen(second_string) + 1 + 1) >= target_size) {
+ /* Not enough space. */
+ return NULL;
+ }
+ for (; *second_string == '/'; ++second_string) {
+ }
+ for (; firstlen > 0 && first_string[firstlen - 1] == '/';
+ --firstlen) {
+ }
+ target[0] = 0;
+ if (firstlen > 0) {
+ strncpy(target, first_string, firstlen);
+ target[firstlen + 1] = 0;
+ }
+ target[firstlen] = '/';
+ firstlen++;
+ target[firstlen] = 0;
+ strcat(target, second_string);
+ return target;
+}
+
+#ifdef BUILD_FOR_TEST
+#define CANBUF 25
+struct canap_s {
+ char *res_exp;
+ char *first;
+ char *second;
+} canap[] = {
+ {
+ "ab/c", "ab", "c"}, {
+ "ab/c", "ab/", "c"}, {
+ "ab/c", "ab", "/c"}, {
+ "ab/c", "ab////", "/////c"}, {
+ "ab/", "ab", ""}, {
+ "ab/", "ab////", ""}, {
+ "ab/", "ab////", ""}, {
+ "/a", "", "a"}, {
+ 0, "/abcdefgbijkl", "pqrstuvwxyzabcd"}, {
+ 0, 0, 0}
+};
+static void
+test_canonical_append(void)
+{
+ /* Make buf big, this is test code, so be safe. */
+ char lbuf[1000];
+ unsigned i;
+ unsigned failcount = 0;
+
+ printf("Entry test_canonical_append\n");
+ for (i = 0;; ++i) {
+ char *res = 0;
+
+ if (canap[i].first == 0 && canap[i].second == 0)
+ break;
+
+ res = canonical_append(lbuf, CANBUF, canap[i].first,
+ canap[i].second);
+ if (res == 0) {
+ if (canap[i].res_exp == 0) {
+ /* GOOD */
+ printf("PASS %u\n", i);
+ } else {
+ ++failcount;
+ printf("FAIL: entry %u wrong, expected %s, got NULL\n",
+ i, canap[i].res_exp);
+ }
+ } else {
+ if (canap[i].res_exp == 0) {
+ ++failcount;
+ printf("FAIL: entry %u wrong, got %s expected NULL\n",
+ i, res);
+ } else {
+ if (strcmp(res, canap[i].res_exp) == 0) {
+ printf("PASS %u\n", i);
+ /* GOOD */
+ } else {
+ ++failcount;
+ printf("FAIL: entry %u wrong, expected %s got %s\n",
+ i, canap[i].res_exp, res);
+ }
+ }
+ }
+ }
+ printf("FAIL count %u\n", failcount);
+
+}
+#endif /* BUILD_FOR_TEST */
+/* Try to find a file as named and open for read.
+ We treat each name as a full name, we are not
+ combining separate name and path components.
+ This is an arbitrary choice...
+
+ The defaults are listed in dwarfdump.c in the array
+ config_file_defaults[].
+*/
+static FILE *
+find_a_file(const char *named_file, char **defaults, const char ** name_used)
+{
+ FILE *fin = 0;
+ const char *lname = named_file;
+ const char *type = "rw";
+ int i = 0;
+
+#ifdef BUILD_FOR_TEST
+ test_canonical_append();
+#endif /* BUILD_FOR_TEST */
+
+ if (lname) {
+ /* Name given, just assume it is fully correct, try no other. */
+ if (verbose > 1) {
+ printf("dwarfdump looking for configuration as %s\n",
+ lname);
+ }
+ fin = fopen(lname, type);
+ if (fin) {
+ *name_used = lname;
+ return fin;
+ }
+ return 0;
+ }
+ /* No name given, find a default, if we can. */
+ for (i = 0; defaults[i]; ++i) {
+ lname = defaults[i];
+#ifdef WIN32
+ /* Open the configuration file, located
+ in the directory where the tool is loaded from */
+ {
+ static char szPath[MAX_PATH];
+ if (GetModuleFileName(NULL,szPath,MAX_PATH)) {
+ char *pDir = strrchr(szPath,'/');
+ if (!pDir) {
+ pDir = strrchr(szPath,'\\');
+ if (!pDir) {
+ /* No file was found */
+ return 0;
+ }
+ }
+ /* Add the configuration name to the pathname */
+ ++pDir;
+ strcpy(pDir,"dwarfdump.conf");
+ lname = szPath;
+ }
+ }
+#else /* non-Win */
+ if (strncmp(lname, "HOME/", 5) == 0) {
+ /* arbitrary size */
+ char buf[2000];
+ char *homedir = getenv("HOME");
+ if (homedir) {
+ char *cp = canonical_append(buf, sizeof(buf),
+ homedir, lname + 5);
+ if (!cp) {
+ /* OOps, ignore this one. */
+ continue;
+ }
+ lname = makename(buf);
+ }
+ }
+#endif /* WIN32 */
+ if (verbose > 1) {
+ printf("dwarfdump looking for configuration as %s\n",
+ lname);
+ }
+ fin = fopen(lname, type);
+ if (fin) {
+ *name_used = lname;
+ return fin;
+ }
+ }
+ return 0;
+}
+
+/* Start at a token begin, see how long it is,
+ return length. */
+unsigned
+find_token_len(char *cp)
+{
+ unsigned len = 0;
+
+ for (; *cp; ++cp) {
+ if (isspace(*cp)) {
+ return len;
+ }
+ if (*cp == '#') {
+ return len; /* begins comment */
+ }
+ ++len;
+ }
+ return len;
+}
+
+/*
+ Skip past all whitespace: the only code that even knows
+ what whitespace is.
+*/
+static char *
+skipwhite(char *cp)
+{
+ for (; *cp; ++cp) {
+ if (!isspace(*cp)) {
+ return cp;
+ }
+ }
+ return cp;
+}
+
+/* Return TRUE if ok. FALSE if find more tokens.
+ Emit error message if error.
+*/
+static int
+ensure_has_no_more_tokens(char *cp, const char *fname, unsigned long lineno)
+{
+ struct token_s tok;
+
+ cp = get_token(cp, &tok);
+ if (tok.tk_len > 0) {
+ printf("dwarfdump.conf error: "
+ "extra characters after command operands, found "
+ "\"%s\" in %s line %lu\n", tok.tk_data, fname, lineno);
+ ++errcount;
+ return FALSE;
+ }
+ return TRUE;
+}
+
+
+/* There may be many beginabi: lines in a dwarfdump.conf file,
+ find the one we want and return its file offset.
+*/
+static int
+find_abi_start(FILE * stream, const char *abi_name,
+ long *offset, unsigned long *lineno_out)
+{
+ char buf[100];
+ unsigned long lineno = 0;
+
+ for (; !feof(stream);) {
+
+ struct token_s tok;
+ char *line = 0;
+ long loffset = ftell(stream);
+
+ line = fgets(buf, sizeof(buf), stream);
+ ++lineno;
+ if (!line) {
+ ++errcount;
+ return FALSE;
+ }
+
+ line = get_token(buf, &tok);
+
+ if (strcmp(tok.tk_data, name_begin_abi) != 0) {
+ continue;
+ }
+ get_token(line, &tok);
+ if (strcmp(tok.tk_data, abi_name) != 0) {
+ continue;
+ }
+
+ *offset = loffset;
+ *lineno_out = lineno;
+ return TRUE;
+ }
+
+ ++errcount;
+ return FALSE;
+}
+
+static char *tempstr = 0;
+static unsigned tempstr_len = 0;
+
+/* Use a global buffer (tempstr) to turn a non-delimited
+ input char array into a NUL-terminated C string
+ (with the help of makename() to get a permanent
+ address for the result ing string).
+*/
+static char *
+build_string(unsigned tlen, char *cp)
+{
+ if (tlen >= tempstr_len) {
+ free(tempstr);
+ tempstr = malloc(tlen + 100);
+ }
+ strncpy(tempstr, cp, tlen);
+ tempstr[tlen] = 0;
+ return makename(tempstr);
+}
+
+/* The tokenizer for our simple parser.
+*/
+static char *
+get_token(char *cp, struct token_s *outtok)
+{
+ char *lcp = skipwhite(cp);
+ unsigned tlen = find_token_len(lcp);
+
+ outtok->tk_len = tlen;
+ if (tlen > 0) {
+ outtok->tk_data = build_string(tlen, lcp);
+ } else {
+ outtok->tk_data = "";
+ }
+ return lcp + tlen;
+
+}
+
+/*
+ We can't get all the field set up statically very easily,
+ so we get the command string length set here.
+*/
+static void
+finish_comtable_setup(void)
+{
+ unsigned i;
+
+ for (i = 0; i < size_of_comtable; ++i) {
+ comtable[i].namelen = strlen(comtable[i].name);
+ }
+}
+
+/*
+ Given a line of the table, determine if it is a command
+ or not, and if a command, which one is it.
+ Return LT_ERROR if it's not recognized.
+*/
+static enum linetype_e
+which_command(char *cp, struct comtable_s **tableentry)
+{
+ int i;
+ struct token_s tok;
+
+ if (*cp == '#')
+ return LT_COMMENT;
+ if (!*cp)
+ return LT_BLANK;
+
+ get_token(cp, &tok);
+
+ for (i = 0; i < size_of_comtable; ++i) {
+ if (tok.tk_len == comtable[i].namelen &&
+ strcmp(comtable[i].name, tok.tk_data) == 0) {
+
+ *tableentry = &comtable[i];
+ return comtable[i].type;
+ }
+ }
+
+ return LT_ERROR;
+}
+
+/* We are promised it's an abiname: command
+ find the name on the line.
+*/
+static int
+parsebeginabi(char *cp, const char *fname, const char *abiname,
+ unsigned long lineno, struct comtable_s *comtab)
+{
+ size_t clen = comtab->namelen;
+ size_t abinamelen = strlen(abiname);
+ struct token_s tok;
+
+
+ cp = cp + clen + 1;
+ cp = skipwhite(cp);
+ get_token(cp, &tok);
+ if (tok.tk_len != abinamelen ||
+ strncmp(cp, abiname, abinamelen) != 0) {
+ printf("dwarfdump internal error: "
+ "mismatch %s with %s %s line %lu\n",
+ cp, tok.tk_data, fname, lineno);
+ ++errcount;
+ return FALSE;
+ }
+ ensure_has_no_more_tokens(cp + tok.tk_len, fname, lineno);
+ return TRUE;
+}
+
+/* This expands register names as required, but does not
+ ensure no names duplicated.
+*/
+#define CONF_TABLE_OVERSIZE 100
+static void
+add_to_reg_table(struct dwconf_s *conf,
+ char *rname, unsigned long rval, const char *fname,
+ unsigned long lineno)
+{
+ if (conf->cf_regs_malloced == 0) {
+ conf->cf_regs = 0;
+ conf->cf_named_regs_table_size = 0;
+ }
+ if (rval >= conf->cf_named_regs_table_size) {
+ char **newregs = 0;
+ unsigned long newtablen = rval + CONF_TABLE_OVERSIZE;
+ unsigned long newtabsize = newtablen * sizeof(char *);
+ unsigned long oldtabsize =
+ conf->cf_named_regs_table_size * sizeof(char *);
+ newregs = realloc(conf->cf_regs, newtabsize);
+ if (!newregs) {
+ printf("dwarfdump: unable to malloc table %lu bytes. "
+ " %s line %lu\n", newtabsize, fname, lineno);
+ exit(1);
+ }
+ /* Zero out the new entries. */
+ memset((char *) newregs + (oldtabsize), 0,
+ (newtabsize - oldtabsize));
+ conf->cf_named_regs_table_size = (unsigned long) newtablen;
+ conf->cf_regs = newregs;
+ conf->cf_regs_malloced = 1;
+ }
+ conf->cf_regs[rval] = rname;
+ return;
+}
+
+/* Our input is supposed to be a number.
+ Determine the value (and return it) or generate an error message.
+*/
+static int
+make_a_number(char *cmd, const char *filename, unsigned long
+ lineno, struct token_s *tok, unsigned long *val_out)
+{
+ char *endnum = 0;
+ unsigned long val = 0;
+
+ val = strtoul(tok->tk_data, &endnum, 0);
+ if (val == 0 && endnum == (tok->tk_data)) {
+ printf("dwarfdump.conf error: "
+ "%s missing register number (\"%s\" not valid) %s line %lu\n",
+ cmd, tok->tk_data, filename, lineno);
+ ++errcount;
+ return FALSE;
+ }
+ if (endnum != (tok->tk_data + tok->tk_len)) {
+ printf("dwarfdump.conf error: "
+ "%s Missing register number (\"%s\" not valid) %s line %lu\n",
+ cmd, tok->tk_data, filename, lineno);
+ ++errcount;
+ return FALSE;
+ }
+ *val_out = val;
+ return TRUE;
+
+
+
+}
+
+/* We are guaranteed it's a reg: command, so parse that command
+ and record the interesting data.
+*/
+static int
+parsereg(char *cp, const char *fname, unsigned long lineno,
+ struct conf_internal_s *conf, struct comtable_s *comtab)
+{
+ size_t clen = comtab->namelen;
+ struct token_s regnum;
+ struct token_s tokreg;
+ unsigned long val = 0;
+ int ok = FALSE;
+ int res = FALSE;
+
+ cp = cp + clen + 1;
+ cp = get_token(cp, &tokreg);
+ cp = get_token(cp, &regnum);
+ if (tokreg.tk_len == 0) {
+ printf("dwarfdump.conf error: "
+ "reg: missing register name %s line %lu",
+ fname, lineno);
+ ++errcount;
+ return FALSE;
+
+ }
+ if (regnum.tk_len == 0) {
+ printf("dwarfdump.conf error: "
+ "reg: missing register number %s line %lu",
+ fname, lineno);
+ ++errcount;
+ return FALSE;
+ }
+
+ ok = make_a_number(comtab->name, fname, lineno, &regnum, &val);
+
+ if (!ok) {
+ ++errcount;
+ return FALSE;
+ }
+
+ add_to_reg_table(conf->conf_out, tokreg.tk_data, val, fname, lineno);
+
+ res = ensure_has_no_more_tokens(cp, fname, lineno);
+ return res;
+}
+
+/*
+ We are guaranteed it's an frame_interface: command.
+ Parse it and record the value data.
+*/
+static int
+parseframe_interface(char *cp, const char *fname, unsigned long lineno,
+ struct conf_internal_s *conf, struct comtable_s *comtab)
+{
+ size_t clen = comtab->namelen;
+ struct token_s tok;
+ unsigned long val = 0;
+ int ok = FALSE;
+ int res = FALSE;
+
+ cp = cp + clen + 1;
+ cp = get_token(cp, &tok);
+ if (tok.tk_len == 0) {
+ printf("dwarfdump.conf error: "
+ "%s missing interface number %s line %lu",
+ comtab->name, fname, lineno);
+ ++errcount;
+ return FALSE;
+ }
+
+ ok = make_a_number(comtab->name, fname, lineno, &tok, &val);
+
+ if (!ok) {
+ ++errcount;
+ return FALSE;
+ }
+ if (val != 2 && val != 3) {
+ printf("dwarfdump.conf error: "
+ "%s only interface numbers 2 or 3 are allowed, "
+ " not %lu. %s line %lu",
+ comtab->name, val, fname, lineno);
+ ++errcount;
+ return FALSE;
+ }
+
+ conf->conf_out->cf_interface_number = (int) val;
+ res = ensure_has_no_more_tokens(cp, fname, lineno);
+ return res;
+}
+
+/*
+ We are guaranteed it's a cfa_reg: command. Parse it
+ and record the important data.
+*/
+static int
+parsecfa_reg(char *cp, const char *fname, unsigned long lineno,
+ struct conf_internal_s *conf, struct comtable_s *comtab)
+{
+ size_t clen = comtab->namelen;
+ struct token_s tok;
+ unsigned long val = 0;
+ int ok = FALSE;
+ int res = FALSE;
+
+ cp = cp + clen + 1;
+ cp = get_token(cp, &tok);
+ if (tok.tk_len == 0) {
+ printf("dwarfdump.conf error: "
+ "%s missing cfa_reg number %s line %lu",
+ comtab->name, fname, lineno);
+ ++errcount;
+ return FALSE;
+ }
+
+ ok = make_a_number(comtab->name, fname, lineno, &tok, &val);
+
+ if (!ok) {
+ ++errcount;
+ return FALSE;
+ }
+ conf->conf_out->cf_cfa_reg = (int) val;
+ res = ensure_has_no_more_tokens(cp, fname, lineno);
+ return res;
+}
+
+
+/* We are guaranteed it's an initial_reg_value: command,
+ parse it and put the reg value where it will be remembered.
+*/
+static int
+parseinitial_reg_value(char *cp, const char *fname,
+ unsigned long lineno,
+ struct conf_internal_s *conf, struct comtable_s *comtab)
+{
+ size_t clen = comtab->namelen;
+ struct token_s tok;
+ unsigned long val = 0;
+ int ok = FALSE;
+ int res = FALSE;
+
+ cp = cp + clen + 1;
+ cp = get_token(cp, &tok);
+ if (tok.tk_len == 0) {
+ printf("dwarfdump.conf error: "
+ "%s missing initial reg value %s line %lu",
+ comtab->name, fname, lineno);
+ ++errcount;
+ return FALSE;
+ }
+
+ ok = make_a_number(comtab->name, fname, lineno, &tok, &val);
+
+ if (!ok) {
+
+ ++errcount;
+ return FALSE;
+ }
+ conf->conf_out->cf_initial_rule_value = (int) val;
+ res = ensure_has_no_more_tokens(cp, fname, lineno);
+ return res;
+}
+
+static int
+parsesame_val_reg(char *cp, const char *fname,
+ unsigned long lineno,
+ struct conf_internal_s *conf, struct comtable_s *comtab)
+{
+ size_t clen = comtab->namelen;
+ struct token_s tok;
+ unsigned long val = 0;
+ int ok = FALSE;
+ int res = FALSE;
+
+ cp = cp + clen + 1;
+ cp = get_token(cp, &tok);
+ if (tok.tk_len == 0) {
+ printf("dwarfdump.conf error: "
+ "%s missing same_reg value %s line %lu",
+ comtab->name, fname, lineno);
+ ++errcount;
+ return FALSE;
+ }
+
+ ok = make_a_number(comtab->name, fname, lineno, &tok, &val);
+
+ if (!ok) {
+
+ ++errcount;
+ return FALSE;
+ }
+ conf->conf_out->cf_same_val = (int) val;
+ res = ensure_has_no_more_tokens(cp, fname, lineno);
+ return res;
+}
+
+static int
+parseundefined_val_reg(char *cp, const char *fname,
+ unsigned long lineno,
+ struct conf_internal_s *conf, struct comtable_s *comtab)
+{
+ size_t clen = comtab->namelen;
+ struct token_s tok;
+ unsigned long val = 0;
+ int ok = FALSE;
+ int res = FALSE;
+
+ cp = cp + clen + 1;
+ cp = get_token(cp, &tok);
+ if (tok.tk_len == 0) {
+ printf("dwarfdump.conf error: "
+ "%s missing undefined_reg value %s line %lu",
+ comtab->name, fname, lineno);
+ ++errcount;
+ return FALSE;
+ }
+
+ ok = make_a_number(comtab->name, fname, lineno, &tok, &val);
+
+ if (!ok) {
+
+ ++errcount;
+ return FALSE;
+ }
+ conf->conf_out->cf_undefined_val = (int) val;
+ res = ensure_has_no_more_tokens(cp, fname, lineno);
+ return res;
+}
+
+
+
+/* We are guaranteed it's a table size command, parse it
+ and record the table size.
+*/
+static int
+parsereg_table_size(char *cp, const char *fname, unsigned long lineno,
+ struct conf_internal_s *conf, struct comtable_s *comtab)
+{
+ size_t clen = comtab->namelen;
+ struct token_s tok;
+ unsigned long val = 0;
+ int ok = FALSE;
+ int res = FALSE;
+
+ cp = cp + clen + 1;
+ cp = get_token(cp, &tok);
+ if (tok.tk_len == 0) {
+ printf("dwarfdump.conf error: "
+ "%s missing reg table size value %s line %lu",
+ comtab->name, fname, lineno);
+ ++errcount;
+ return FALSE;
+ }
+
+ ok = make_a_number(comtab->name, fname, lineno, &tok, &val);
+
+ if (!ok) {
+ ++errcount;
+ return FALSE;
+ }
+ conf->conf_out->cf_table_entry_count = (unsigned long) val;
+ res = ensure_has_no_more_tokens(cp, fname, lineno);
+ return res;
+}
+
+/* We are guaranteed it's a table size command, parse it
+ and record the table size.
+*/
+static int
+parseaddress_size(char *cp, const char *fname, unsigned long lineno,
+ struct conf_internal_s *conf, struct comtable_s *comtab)
+{
+ size_t clen = comtab->namelen;
+ struct token_s tok;
+ unsigned long val = 0;
+ int ok = FALSE;
+ int res = FALSE;
+
+ cp = cp + clen + 1;
+ cp = get_token(cp, &tok);
+ if (tok.tk_len == 0) {
+ printf("dwarfdump.conf error: "
+ "%s missing address size value %s line %lu",
+ comtab->name, fname, lineno);
+ ++errcount;
+ return FALSE;
+ }
+
+ ok = make_a_number(comtab->name, fname, lineno, &tok, &val);
+
+ if (!ok) {
+ ++errcount;
+ return FALSE;
+ }
+ conf->conf_out->cf_address_size = (unsigned long) val;
+ res = ensure_has_no_more_tokens(cp, fname, lineno);
+ return res;
+}
+
+
+/* We are guaranteed it's an endabi: command, parse it and
+ check we have the right abi.
+*/
+static int
+parseendabi(char *cp, const char *fname,
+ const char *abiname, unsigned long lineno,
+ struct comtable_s *comtab)
+{
+ size_t clen = comtab->namelen;
+ struct token_s tok;
+ int res = 0;
+
+
+ cp = cp + clen + 1;
+ cp = get_token(cp, &tok);
+ if (strcmp(abiname, tok.tk_data) != 0) {
+ printf("%s error: "
+ "mismatch abi name %s (here) vs. %s (beginabi:) %s line %lu\n",
+ comtab->name, tok.tk_data, abiname, fname, lineno);
+ ++errcount;
+ return FALSE;
+ }
+ res = ensure_has_no_more_tokens(cp, fname, lineno);
+ return res;
+}
+static int
+parseincludeabi(char *cp, const char *fname, unsigned long lineno,
+ char **abiname_out,
+ struct comtable_s *comtab)
+{
+ size_t clen = comtab->namelen;
+ struct token_s tok;
+ char *name = 0;
+ int res = FALSE;
+
+ cp = cp + clen + 1;
+ cp = get_token(cp, &tok);
+ name = makename(tok.tk_data);
+
+ *abiname_out = name;
+ res = ensure_has_no_more_tokens(cp, fname, lineno);
+ return res;
+}
+
+
+
+
+/* Return TRUE if we succeeded and filed in *out.
+ Return FALSE if we failed (and fill in nothing).
+ beginabi: <abiname>
+ reg: <regname> <dwarf regnumber>
+ frame_interface: <integer value 2 or 3>
+ cfa_reg: <number>
+ initial_reg_value: <number: normally 1034 or 1035 >
+ reg_table_size: <size of table>
+ endabi: <abiname>
+
+ We are positioned at the start of a beginabi: line when
+ called.
+
+*/
+static int
+parse_abi(FILE * stream, const char *fname, const char *abiname,
+ struct conf_internal_s *conf_internal,
+ unsigned long lineno,
+ unsigned int nest_level)
+{
+ struct dwconf_s *localconf = conf_internal->conf_out;
+ char buf[1000];
+ int comtype = 0;
+
+ static int first_time_done = 0;
+ struct comtable_s *comtabp = 0;
+
+ if( nest_level > MAX_NEST_LEVEL) {
+ ++errcount;
+ printf("dwarfdump.conf: includeabi nest too deep in %s at line %lu\n",
+ fname, lineno);
+ return FALSE;
+ }
+
+
+ if (first_time_done == 0) {
+ finish_comtable_setup();
+ first_time_done = 1;
+ }
+
+ for (; !feof(stream);) {
+ char *line = 0;
+
+ /* long loffset = ftell(stream); */
+ line = fgets(buf, sizeof(buf), stream);
+ if (!line) {
+ ++errcount;
+ printf
+ ("dwarfdump: end of file or error before endabi: in %s, line %lu\n",
+ fname, lineno);
+ return FALSE;
+ }
+ ++lineno;
+ line = skipwhite(line);
+ comtype = which_command(line, &comtabp);
+ switch (comtype) {
+ case LT_ERROR:
+ ++errcount;
+ printf
+ ("dwarfdump: Unknown text in %s is \"%s\" at line %lu\n",
+ fname, line, lineno);
+ break;
+ case LT_COMMENT:
+ break;
+ case LT_BLANK:
+ break;
+ case LT_BEGINABI:
+ if (conf_internal->beginabi_lineno > 0) {
+ ++errcount;
+ printf
+ ("dwarfdump: Encountered beginabi: when not expected. "
+ "%s line %lu previous beginabi line %lu\n", fname,
+ lineno, conf_internal->beginabi_lineno);
+ }
+ conf_internal->beginabi_lineno = lineno;
+ parsebeginabi(line, fname, abiname, lineno, comtabp);
+ break;
+
+ case LT_REG:
+ parsereg(line, fname, lineno, conf_internal, comtabp);
+ conf_internal->regcount++;
+ break;
+ case LT_FRAME_INTERFACE:
+ if (conf_internal->frame_interface_lineno > 0) {
+ ++errcount;
+ printf
+ ("dwarfdump: Encountered duplicate frame_interface: "
+ "%s line %lu previous frame_interface: line %lu\n",
+ fname, lineno, conf_internal->frame_interface_lineno);
+ }
+ conf_internal->frame_interface_lineno = lineno;
+ parseframe_interface(line, fname,
+ lineno, conf_internal, comtabp);
+ break;
+ case LT_CFA_REG:
+ if (conf_internal->cfa_reg_lineno > 0) {
+ printf("dwarfdump: Encountered duplicate cfa_reg: "
+ "%s line %lu previous cfa_reg line %lu\n",
+ fname, lineno, conf_internal->cfa_reg_lineno);
+ ++errcount;
+ }
+ conf_internal->cfa_reg_lineno = lineno;
+ parsecfa_reg(line, fname, lineno, conf_internal, comtabp);
+ break;
+ case LT_INITIAL_REG_VALUE:
+ if (conf_internal->initial_reg_value_lineno > 0) {
+ printf
+ ("dwarfdump: Encountered duplicate initial_reg_value: "
+ "%s line %lu previous initial_reg_value: line %lu\n",
+ fname, lineno, conf_internal->initial_reg_value_lineno);
+ ++errcount;
+ }
+ conf_internal->initial_reg_value_lineno = lineno;
+ parseinitial_reg_value(line, fname,
+ lineno, conf_internal, comtabp);
+ break;
+ case LT_SAME_VAL_REG:
+ if (conf_internal->same_val_reg_lineno > 0) {
+ ++errcount;
+ printf
+ ("dwarfdump: Encountered duplicate same_val_reg: "
+ "%s line %lu previous initial_reg_value: line %lu\n",
+ fname, lineno, conf_internal->initial_reg_value_lineno);
+ }
+ conf_internal->same_val_reg_lineno = lineno;
+ parsesame_val_reg(line, fname,
+ lineno, conf_internal, comtabp);
+ break;
+ case LT_UNDEFINED_VAL_REG:
+ if (conf_internal->undefined_val_reg_lineno > 0) {
+ ++errcount;
+ printf
+ ("dwarfdump: Encountered duplicate undefined_val_reg: "
+ "%s line %lu previous initial_reg_value: line %lu\n",
+ fname, lineno, conf_internal->initial_reg_value_lineno);
+ }
+ conf_internal->undefined_val_reg_lineno = lineno;
+ parseundefined_val_reg(line, fname,
+ lineno, conf_internal, comtabp);
+ break;
+ case LT_REG_TABLE_SIZE:
+ if (conf_internal->reg_table_size_lineno > 0) {
+ printf("dwarfdump: duplicate reg_table_size: "
+ "%s line %lu previous reg_table_size: line %lu\n",
+ fname, lineno, conf_internal->reg_table_size_lineno);
+ ++errcount;
+ }
+ conf_internal->reg_table_size_lineno = lineno;
+ parsereg_table_size(line, fname,
+ lineno, conf_internal, comtabp);
+ break;
+ case LT_ENDABI:
+ parseendabi(line, fname, abiname, lineno, comtabp);
+
+ if (conf_internal->regcount > localconf->cf_table_entry_count) {
+ printf("dwarfdump: more registers named than "
+ " in %s ( %lu named vs %s %lu) %s line %lu\n",
+ abiname, (unsigned long) conf_internal->regcount,
+ name_reg_table_size,
+ (unsigned long) localconf->cf_table_entry_count,
+ fname, (unsigned long) lineno);
+ ++errcount;
+ }
+ return TRUE;
+ case LT_ADDRESS_SIZE:
+ if (conf_internal->address_size_lineno > 0) {
+ printf("dwarfdump: duplicate address_size: "
+ "%s line %lu previous address_size: line %lu\n",
+ fname, lineno, conf_internal->address_size_lineno);
+ ++errcount;
+ }
+ conf_internal->address_size_lineno = lineno;
+ parseaddress_size(line, fname,
+ lineno, conf_internal, comtabp);
+ break;
+ case LT_INCLUDEABI: {
+ char *abiname_inner = 0;
+ unsigned long abilno = conf_internal->beginabi_lineno;
+ int ires = 0;
+ ires = parseincludeabi(line,fname,lineno, &abiname_inner,comtabp);
+ if(ires == FALSE) {
+ return FALSE;
+ }
+ /* For the nested abi read, the abi line number must be
+ set as if not-yet-read, and then restored. */
+ conf_internal->beginabi_lineno = 0;
+ find_conf_file_and_read_config_inner(
+ conf_internal->conf_name_used,
+ abiname_inner, conf_internal,nest_level+1);
+ conf_internal->beginabi_lineno = abilno;
+ }
+ break;
+ default:
+ printf
+ ("dwarfdump internal error, impossible line type %d %s %lu \n",
+ (int) comtype, fname, lineno);
+ exit(1);
+
+ }
+ }
+ ++errcount;
+ printf("End of file, no endabi: found. %s, line %lu\n",
+ fname, lineno);
+ return FALSE;
+}
+
+/* MIPS/IRIX frame register names.
+ For alternate name sets, use dwarfdump.conf or
+ revise dwarf.h and libdwarf.h and this table.
+*/
+static char *regnames[] = {
+ "cfa",
+ "r1/at", "r2/v0", "r3/v1",
+ "r4/a0", "r5/a1", "r6/a2", "r7/a3",
+ "r8/t0", "r9/t1", "r10/t2", "r11/t3",
+ "r12/t4", "r13/t5", "r14/t6", "r15/t7",
+ "r16/s0", "r17/s1", "r18/s2", "r19/s3",
+ "r20/s4", "r21/s5", "r22/s6", "r23/s7",
+ "r24/t8", "r25/t9", "r26/k0", "r27/k1",
+ "r28/gp", "r29/sp", "r30/s8", "r31",
+
+ "$f0", "$f1",
+ "$f2", "$f3",
+ "$f4", "$f5",
+ "$f6", "$f7",
+ "$f8", "$f9",
+ "$f10", "$f11",
+ "$f12", "$f13",
+ "$f14", "$f15",
+ "$f16", "$f17",
+ "$f18", "$f19",
+ "$f20", "$f21",
+ "$f22", "$f23",
+ "$f24", "$f25",
+ "$f26", "$f27",
+ "$f28", "$f29",
+ "$f30", "$f31",
+ "ra", "slk",
+};
+
+
+/* Naming a few registers makes printing these just
+ a little bit faster.
+*/
+static char *genericregnames[] = {
+ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9",
+ "r10", "r11", "r12", "r13", "r14", "r15", "r16", "r17", "r18", "r19",
+ "r20"
+};
+
+/* This is a simple generic set of registers. The
+ table entry count is pretty arbitrary.
+*/
+void
+init_conf_file_data(struct dwconf_s *config_file_data)
+{
+ unsigned generic_table_count;
+ config_file_data->cf_abi_name = "";
+ config_file_data->cf_config_file_path = "";
+ config_file_data->cf_interface_number = 3;
+ config_file_data->cf_table_entry_count = 100;
+ config_file_data->cf_initial_rule_value = DW_FRAME_UNDEFINED_VAL;
+ config_file_data->cf_cfa_reg = DW_FRAME_CFA_COL3;
+ config_file_data->cf_address_size = 0;
+ config_file_data->cf_same_val = DW_FRAME_SAME_VAL;
+ config_file_data->cf_undefined_val = DW_FRAME_UNDEFINED_VAL;
+ config_file_data->cf_regs = genericregnames;
+ generic_table_count =
+ sizeof(genericregnames) / sizeof(genericregnames[0]);
+ config_file_data->cf_named_regs_table_size = generic_table_count;
+ config_file_data->cf_regs_malloced = 0;
+}
+
+/* These defaults match MIPS/IRIX ABI defaults, but this
+ function is not actually used.
+ For a 'generic' ABI, see -R or init_conf_file_data().
+ To really get the old MIPS, use '-x abi=mips'.
+ For other ABIs, see -x abi=<whatever>
+ to configure dwarfdump (and libdwarf) frame
+ data reporting at runtime.
+*/
+void
+init_mips_conf_file_data(struct dwconf_s *config_file_data)
+{
+ unsigned long base_table_count =
+ sizeof(regnames) / sizeof(regnames[0]);
+
+ memset(config_file_data, 0, sizeof(*config_file_data));
+ /* Interface 2 is deprecated, but for testing purposes
+ is acceptable. */
+ config_file_data->cf_interface_number = 2;
+ config_file_data->cf_table_entry_count = DW_REG_TABLE_SIZE;
+ config_file_data->cf_initial_rule_value =
+ DW_FRAME_REG_INITIAL_VALUE;
+ config_file_data->cf_cfa_reg = DW_FRAME_CFA_COL;
+ config_file_data->cf_address_size = 0;
+ config_file_data->cf_same_val = DW_FRAME_SAME_VAL;
+ config_file_data->cf_undefined_val = DW_FRAME_UNDEFINED_VAL;
+ config_file_data->cf_regs = regnames;
+ config_file_data->cf_named_regs_table_size = base_table_count;
+ config_file_data->cf_regs_malloced = 0;
+ if (config_file_data->cf_table_entry_count != base_table_count) {
+ printf("dwarfdump: improper base table initization, "
+ "header files wrong: "
+ "DW_REG_TABLE_SIZE %u != string table size %lu\n",
+ (unsigned) DW_REG_TABLE_SIZE,
+ (unsigned long) base_table_count);
+ exit(1);
+ }
+ return;
+}
+
+/* A 'generic' ABI. For up to 1200 registers.
+ Perhaps cf_initial_rule_value should be d
+ UNDEFINED VALUE (1034) instead, but for the purposes of
+ getting the dwarfdump output correct
+ either will work.
+*/
+void
+init_generic_config_1200_regs(struct dwconf_s *config_file_data)
+{
+ unsigned long generic_table_count =
+ sizeof(genericregnames) / sizeof(genericregnames[0]);
+ config_file_data->cf_interface_number = 3;
+ config_file_data->cf_table_entry_count = 1200;
+ /* There is no defined name for cf_initial_rule_value,
+ cf_same_val, or cf_undefined_val in libdwarf.h,
+ these must just be high enough to be higher than
+ any real register number.
+ DW_FRAME_CFA_COL3 must also be higher than any
+ real register number. */
+ config_file_data->cf_initial_rule_value = 1235; /* SAME VALUE */
+ config_file_data->cf_cfa_reg = DW_FRAME_CFA_COL3;
+ config_file_data->cf_address_size = 0;
+ config_file_data->cf_same_val = 1235;
+ config_file_data->cf_undefined_val = 1234;
+ config_file_data->cf_regs = genericregnames;
+ config_file_data->cf_named_regs_table_size = generic_table_count;
+ config_file_data->cf_regs_malloced = 0;
+}
+
+/* Print the 'right' string for the register we are given.
+ Deal sensibly with the special regs as well as numbers
+ we know and those we have not been told about.
+
+*/
+void
+print_reg_from_config_data(Dwarf_Signed reg,
+ struct dwconf_s *config_data)
+{
+ char *name = 0;
+
+ if (reg == config_data->cf_cfa_reg) {
+ fputs("cfa",stdout);
+ return;
+ }
+ if (reg == config_data->cf_undefined_val) {
+ fputs("u",stdout);
+ return;
+ }
+ if (reg == config_data->cf_same_val) {
+ fputs("s",stdout);
+ return;
+ }
+
+ if (config_data->cf_regs == 0 ||
+ reg < 0 ||
+ reg >= config_data->cf_named_regs_table_size) {
+ printf("r%" DW_PR_DSd "", (Dwarf_Signed) reg);
+ return;
+ }
+ name = config_data->cf_regs[reg];
+ if (!name) {
+ /* Can happen, the reg names table can be sparse. */
+ printf("r%" DW_PR_DSd "", (Dwarf_Signed) reg);
+ return;
+ }
+ fputs(name,stdout);
+ return;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-21 14:27:59 +0000