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Diffstat (limited to 'util/nvramtool/accessors/layout-text.c')
| -rw-r--r-- | util/nvramtool/accessors/layout-text.c | 900 |
1 files changed, 900 insertions, 0 deletions
diff --git a/util/nvramtool/accessors/layout-text.c b/util/nvramtool/accessors/layout-text.c new file mode 100644 index 0000000000..5f7cadea97 --- /dev/null +++ b/util/nvramtool/accessors/layout-text.c @@ -0,0 +1,900 @@ +/*****************************************************************************\ + * layout-text.c + ***************************************************************************** + * Copyright (C) 2002-2005 The Regents of the University of California. + * Produced at the Lawrence Livermore National Laboratory. + * Written by Dave Peterson <dsp@llnl.gov> <dave_peterson@pobox.com>. + * UCRL-CODE-2003-012 + * All rights reserved. + * + * This file is part of nvramtool, a utility for reading/writing coreboot + * parameters and displaying information from the coreboot table. + * For details, see http://coreboot.org/nvramtool. + * + * Please also read the file DISCLAIMER which is included in this software + * distribution. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License (as published by the + * Free Software Foundation) version 2, dated June 1991. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and + * conditions of the GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. +\*****************************************************************************/ + +#include "common.h" +#include "layout-text.h" +#include "layout.h" +#include "cmos_lowlevel.h" +#include "reg_expr.h" + +static void process_layout_file(FILE * f); +static void skip_past_start(FILE * f); +static int process_entry(FILE * f, int skip_add); +static int process_enum(FILE * f, int skip_add); +static void process_checksum_info(FILE * f); +static void skip_remaining_lines(FILE * f); +static void create_entry(cmos_entry_t * cmos_entry, + const char start_bit_str[], const char length_str[], + const char config_str[], const char config_id_str[], + const char name_str[]); +static void try_add_layout_file_entry(const cmos_entry_t * cmos_entry); +static void create_enum(cmos_enum_t * cmos_enum, const char id_str[], + const char value_str[], const char text_str[]); +static void try_add_cmos_enum(const cmos_enum_t * cmos_enum); +static void set_checksum_info(const char start_str[], const char end_str[], + const char index_str[]); +static char cmos_entry_char_value(cmos_entry_config_t config); +static int get_layout_file_line(FILE * f, char line[], int line_buf_size); +static unsigned string_to_unsigned(const char str[], const char str_name[]); +static unsigned long string_to_unsigned_long(const char str[], + const char str_name[]); +static unsigned long do_string_to_unsigned_long(const char str[], + const char str_name[], + const char blurb[]); + +/* matches either a blank line or a comment line */ +static const char blank_or_comment_regex[] = + /* a blank line */ + "(^[[:space:]]+$)" "|" /* or ... */ + /* a line consisting of: optional whitespace followed by */ + "(^[[:space:]]*" + /* a '#' character and optionally, additional characters */ + "#.*$)"; + +static regex_t blank_or_comment_expr; + +/* matches the line in a CMOS layout file indicating the start of the + * "entries" section. + */ +static const char start_entries_regex[] = + /* optional whitespace */ + "^[[:space:]]*" + /* followed by "entries" */ + "entries" + /* followed by optional whitespace */ + "[[:space:]]*$"; + +static regex_t start_entries_expr; + +/* matches the line in a CMOS layout file indicating the start of the + * "enumerations" section + */ +static const char start_enums_regex[] = + /* optional whitespace */ + "^[[:space:]]*" + /* followed by "enumerations" */ + "enumerations" + /* followed by optional whitespace */ + "[[:space:]]*$"; + +static regex_t start_enums_expr; + +/* matches the line in a CMOS layout file indicating the start of the + * "checksums" section + */ +static const char start_checksums_regex[] = + /* optional whitespace */ + "^[[:space:]]*" + /* followed by "checksums" */ + "checksums" + /* followed by optional whitespace */ + "[[:space:]]*$"; + +static regex_t start_checksums_expr; + +/* matches a line in a CMOS layout file specifying a CMOS entry */ +static const char entries_line_regex[] = + /* optional whitespace */ + "^[[:space:]]*" + /* followed by a chunk of nonwhitespace for start-bit field */ + "([^[:space:]]+)" + /* followed by one or more whitespace characters */ + "[[:space:]]+" + /* followed by a chunk of nonwhitespace for length field */ + "([^[:space:]]+)" + /* followed by one or more whitespace characters */ + "[[:space:]]+" + /* followed by a chunk of nonwhitespace for config field */ + "([^[:space:]]+)" + /* followed by one or more whitespace characters */ + "[[:space:]]+" + /* followed by a chunk of nonwhitespace for config-ID field */ + "([^[:space:]]+)" + /* followed by one or more whitespace characters */ + "[[:space:]]+" + /* followed by a chunk of nonwhitespace for name field */ + "([^[:space:]]+)" + /* followed by optional whitespace */ + "[[:space:]]*$"; + +static regex_t entries_line_expr; + +/* matches a line in a CMOS layout file specifying a CMOS enumeration */ +static const char enums_line_regex[] = + /* optional whitespace */ + "^[[:space:]]*" + /* followed by a chunk of nonwhitespace for ID field */ + "([^[:space:]]+)" + /* followed by one or more whitespace characters */ + "[[:space:]]+" + /* followed by a chunk of nonwhitespace for value field */ + "([^[:space:]]+)" + /* followed by one or more whitespace characters */ + "[[:space:]]+" + /* followed by a chunk of nonwhitespace for text field */ + "([^[:space:]]+)" + /* followed by optional whitespace */ + "[[:space:]]*$"; + +static regex_t enums_line_expr; + +/* matches the line in a CMOS layout file specifying CMOS checksum + * information + */ +static const char checksum_line_regex[] = + /* optional whitespace */ + "^[[:space:]]*" + /* followed by "checksum" */ + "checksum" + /* followed by one or more whitespace characters */ + "[[:space:]]+" + /* followed by a chunk of nonwhitespace for first bit of summed area */ + "([^[:space:]]+)" + /* followed by one or more whitespace characters */ + "[[:space:]]+" + /* followed by a chunk of nonwhitespace for last bit of summed area */ + "([^[:space:]]+)" + /* followed by one or more whitespace characters */ + "[[:space:]]+" + /* followed by a chunk of nonwhitespace for checksum location bit */ + "([^[:space:]]+)" + /* followed by optional whitespace */ + "[[:space:]]*$"; + +static regex_t checksum_line_expr; + +static const int LINE_BUF_SIZE = 256; + +static int line_num; + +static const char *layout_filename = NULL; + +/**************************************************************************** + * set_layout_filename + * + * Set the name of the file we will obtain CMOS layout information from. + ****************************************************************************/ +void set_layout_filename(const char filename[]) +{ + layout_filename = filename; +} + +/**************************************************************************** + * get_layout_from_file + * + * Read CMOS layout information from the user-specified CMOS layout file. + ****************************************************************************/ +void get_layout_from_file(void) +{ + FILE *f; + + assert(layout_filename != NULL); + + if ((f = fopen(layout_filename, "r")) == NULL) { + fprintf(stderr, + "%s: Can not open CMOS layout file %s for reading: " + "%s\n", prog_name, layout_filename, strerror(errno)); + exit(1); + } + + process_layout_file(f); + fclose(f); +} + +/**************************************************************************** + * write_cmos_layout + * + * Write CMOS layout information to file 'f'. The output is written in the + * format that CMOS layout files adhere to. + ****************************************************************************/ +void write_cmos_layout(FILE * f) +{ + const cmos_entry_t *cmos_entry; + const cmos_enum_t *cmos_enum; + cmos_checksum_layout_t layout; + + fprintf(f, "entries\n"); + + for (cmos_entry = first_cmos_entry(); + cmos_entry != NULL; cmos_entry = next_cmos_entry(cmos_entry)) + fprintf(f, "%u %u %c %u %s\n", cmos_entry->bit, + cmos_entry->length, + cmos_entry_char_value(cmos_entry->config), + cmos_entry->config_id, cmos_entry->name); + + fprintf(f, "\nenumerations\n"); + + for (cmos_enum = first_cmos_enum(); + cmos_enum != NULL; cmos_enum = next_cmos_enum(cmos_enum)) + fprintf(f, "%u %llu %s\n", cmos_enum->config_id, + cmos_enum->value, cmos_enum->text); + + layout.summed_area_start = cmos_checksum_start; + layout.summed_area_end = cmos_checksum_end; + layout.checksum_at = cmos_checksum_index; + checksum_layout_to_bits(&layout); + fprintf(f, "\nchecksums\nchecksum %u %u %u\n", layout.summed_area_start, + layout.summed_area_end, layout.checksum_at); +} + +/**************************************************************************** + * process_layout_file + * + * Read CMOS layout information from file 'f' and add it to our internal + * repository. + ****************************************************************************/ +static void process_layout_file(FILE * f) +{ + compile_reg_expr(REG_EXTENDED | REG_NEWLINE, blank_or_comment_regex, &blank_or_comment_expr); + compile_reg_expr(REG_EXTENDED | REG_NEWLINE, start_entries_regex, &start_entries_expr); + compile_reg_expr(REG_EXTENDED | REG_NEWLINE, entries_line_regex, &entries_line_expr); + compile_reg_expr(REG_EXTENDED | REG_NEWLINE, start_enums_regex, &start_enums_expr); + compile_reg_expr(REG_EXTENDED | REG_NEWLINE, enums_line_regex, &enums_line_expr); + compile_reg_expr(REG_EXTENDED | REG_NEWLINE, start_checksums_regex, &start_checksums_expr); + compile_reg_expr(REG_EXTENDED | REG_NEWLINE, checksum_line_regex, &checksum_line_expr); + line_num = 1; + skip_past_start(f); + + /* Skip past all entries. We will process these later when we + * make a second pass through the file. + */ + while (!process_entry(f, 1)) ; + + /* Process all enums, adding them to our internal repository as + * we go. */ + + if (process_enum(f, 0)) { + fprintf(stderr, "%s: Error: CMOS layout file contains no " + "enumerations.\n", prog_name); + exit(1); + } + + while (!process_enum(f, 0)) ; + + /* Go back to start of file. */ + line_num = 1; + fseek(f, 0, SEEK_SET); + + skip_past_start(f); + + /* Process all entries, adding them to the repository as we go. + * We must add the entries after the enums, even though they + * appear in the layout file before the enums. This is because + * the entries are sanity checked against the enums as they are + * added. + */ + + if (process_entry(f, 0)) { + fprintf(stderr, + "%s: Error: CMOS layout file contains no entries.\n", + prog_name); + exit(1); + } + + while (!process_entry(f, 0)) ; + + /* Skip past all enums. They have already been processed. */ + while (!process_enum(f, 1)) ; + + /* Process CMOS checksum info. */ + process_checksum_info(f); + + /* See if there are any lines left to process. If so, verify + * that they are all either blank lines or comments. + */ + skip_remaining_lines(f); + + regfree(&blank_or_comment_expr); + regfree(&start_entries_expr); + regfree(&entries_line_expr); + regfree(&start_enums_expr); + regfree(&enums_line_expr); + regfree(&start_checksums_expr); + regfree(&checksum_line_expr); +} + +/**************************************************************************** + * skip_past_start + * + * Skip past the line that marks the start of the "entries" section. + ****************************************************************************/ +static void skip_past_start(FILE * f) +{ + char line[LINE_BUF_SIZE]; + + for (;; line_num++) { + if (get_layout_file_line(f, line, LINE_BUF_SIZE)) { + fprintf(stderr, + "%s: \"entries\" line not found in CMOS layout file.\n", + prog_name); + exit(1); + } + + if (!regexec(&blank_or_comment_expr, line, 0, NULL, 0)) + continue; + + if (!regexec(&start_entries_expr, line, 0, NULL, 0)) + break; + + fprintf(stderr, + "%s: Syntax error on line %d of CMOS layout file. " + "\"entries\" line expected.\n", prog_name, line_num); + exit(1); + } + + line_num++; +} + +/**************************************************************************** + * process_entry + * + * Get an entry from "entries" section of file and add it to our repository + * of layout information. Return 0 if an entry was found and processed. + * Return 1 if there are no more entries. + ****************************************************************************/ +static int process_entry(FILE * f, int skip_add) +{ + static const size_t N_MATCHES = 6; + char line[LINE_BUF_SIZE]; + regmatch_t match[N_MATCHES]; + cmos_entry_t cmos_entry; + int result; + + result = 1; + + for (;; line_num++) { + if (get_layout_file_line(f, line, LINE_BUF_SIZE)) { + fprintf(stderr, + "%s: Unexpected end of CMOS layout file reached while " + "reading \"entries\" section.\n", prog_name); + exit(1); + } + + if (!regexec(&blank_or_comment_expr, line, 0, NULL, 0)) + continue; + + if (regexec(&entries_line_expr, line, N_MATCHES, match, 0)) { + if (regexec(&start_enums_expr, line, 0, NULL, 0)) { + fprintf(stderr, + "%s: Syntax error on line %d of CMOS layout " + "file.\n", prog_name, line_num); + exit(1); + } + + break; /* start of enumerations reached: no more entries */ + } + + result = 0; /* next layout entry found */ + + if (skip_add) + break; + + line[match[1].rm_eo] = '\0'; + line[match[2].rm_eo] = '\0'; + line[match[3].rm_eo] = '\0'; + line[match[4].rm_eo] = '\0'; + line[match[5].rm_eo] = '\0'; + create_entry(&cmos_entry, &line[match[1].rm_so], + &line[match[2].rm_so], &line[match[3].rm_so], + &line[match[4].rm_so], &line[match[5].rm_so]); + try_add_layout_file_entry(&cmos_entry); + break; + } + + line_num++; + return result; +} + +/**************************************************************************** + * process_enum + * + * Get an enuneration from "enumerations" section of file and add it to our + * repository of layout information. Return 0 if an enumeration was found + * and processed. Return 1 if there are no more enumerations. + ****************************************************************************/ +static int process_enum(FILE * f, int skip_add) +{ + static const size_t N_MATCHES = 4; + char line[LINE_BUF_SIZE]; + regmatch_t match[N_MATCHES]; + cmos_enum_t cmos_enum; + int result; + + result = 1; + + for (;; line_num++) { + if (get_layout_file_line(f, line, LINE_BUF_SIZE)) { + fprintf(stderr, + "%s: Unexpected end of CMOS layout file reached while " + "reading \"enumerations\" section.\n", + prog_name); + exit(1); + } + + if (!regexec(&blank_or_comment_expr, line, 0, NULL, 0)) + continue; + + if (regexec(&enums_line_expr, line, N_MATCHES, match, 0)) { + if (regexec(&start_checksums_expr, line, 0, NULL, 0)) { + fprintf(stderr, + "%s: Syntax error on line %d of CMOS layout " + "file.\n", prog_name, line_num); + exit(1); + } + + break; /* start of checksums reached: no more enumerations */ + } + + result = 0; /* next layout enumeration found */ + + if (skip_add) + break; + + line[match[1].rm_eo] = '\0'; + line[match[2].rm_eo] = '\0'; + line[match[3].rm_eo] = '\0'; + create_enum(&cmos_enum, &line[match[1].rm_so], + &line[match[2].rm_so], &line[match[3].rm_so]); + try_add_cmos_enum(&cmos_enum); + break; + } + + line_num++; + return result; +} + +/**************************************************************************** + * process_checksum_info + * + * Get line conatining CMOS checksum information. + ****************************************************************************/ +static void process_checksum_info(FILE * f) +{ + static const size_t N_MATCHES = 4; + char line[LINE_BUF_SIZE]; + regmatch_t match[N_MATCHES]; + + for (;; line_num++) { + if (get_layout_file_line(f, line, LINE_BUF_SIZE)) { + fprintf(stderr, + "%s: Unexpected end of CMOS layout file reached while " + "reading \"checksums\" section.\n", prog_name); + exit(1); + } + + if (!regexec(&blank_or_comment_expr, line, 0, NULL, 0)) + continue; + + if (regexec(&checksum_line_expr, line, N_MATCHES, match, 0)) { + fprintf(stderr, + "%s: Syntax error on line %d of CMOS layout " + "file. \"checksum\" line expected.\n", + prog_name, line_num); + exit(1); + } + + /* checksum line found */ + line[match[1].rm_eo] = '\0'; + line[match[2].rm_eo] = '\0'; + line[match[3].rm_eo] = '\0'; + set_checksum_info(&line[match[1].rm_so], &line[match[2].rm_so], + &line[match[3].rm_so]); + break; + } +} + +/**************************************************************************** + * skip_remaining_lines + * + * Get any remaining lines of unprocessed input. Complain if we find a line + * that contains anything other than comments and whitespace. + ****************************************************************************/ +static void skip_remaining_lines(FILE * f) +{ + char line[LINE_BUF_SIZE]; + + for (line_num++; + get_layout_file_line(f, line, LINE_BUF_SIZE) == OK; line_num++) { + if (regexec(&blank_or_comment_expr, line, 0, NULL, 0)) { + fprintf(stderr, + "%s: Syntax error on line %d of CMOS layout file: " + "Only comments and/or whitespace allowed after " + "\"checksum\" line.\n", prog_name, line_num); + exit(1); + } + } +} + +/**************************************************************************** + * create_entry + * + * Create a CMOS entry structure representing the given information. Perform + * sanity checking on input parameters. + ****************************************************************************/ +static void create_entry(cmos_entry_t * cmos_entry, + const char start_bit_str[], const char length_str[], + const char config_str[], const char config_id_str[], + const char name_str[]) +{ + cmos_entry->bit = string_to_unsigned(start_bit_str, "start-bit"); + cmos_entry->length = string_to_unsigned(length_str, "length"); + + if (config_str[1] != '\0') + goto bad_config_str; + + switch (config_str[0]) { + case 'e': + cmos_entry->config = CMOS_ENTRY_ENUM; + break; + + case 'h': + cmos_entry->config = CMOS_ENTRY_HEX; + break; + + case 's': + cmos_entry->config = CMOS_ENTRY_STRING; + break; + + case 'r': + cmos_entry->config = CMOS_ENTRY_RESERVED; + break; + + default: + goto bad_config_str; + } + + cmos_entry->config_id = string_to_unsigned(config_id_str, "config-ID"); + + if (strlen(name_str) >= CMOS_MAX_NAME_LENGTH) { + fprintf(stderr, + "%s: Error on line %d of CMOS layout file: name too " + "long (max length is %d).\n", prog_name, line_num, + CMOS_MAX_NAME_LENGTH - 1); + exit(1); + } + + strcpy(cmos_entry->name, name_str); + return; + + bad_config_str: + fprintf(stderr, + "%s: Error on line %d of CMOS layout file: 'e', 'h', or " + "'r' expected for config value.\n", prog_name, line_num); + exit(1); +} + +/**************************************************************************** + * try_add_layout_file_entry + * + * Attempt to add the given CMOS entry to our internal repository. Exit with + * an error message on failure. + ****************************************************************************/ +static void try_add_layout_file_entry(const cmos_entry_t * cmos_entry) +{ + const cmos_entry_t *conflict; + + switch (add_cmos_entry(cmos_entry, &conflict)) { + case OK: + return; + + case CMOS_AREA_OUT_OF_RANGE: + fprintf(stderr, + "%s: Error on line %d of CMOS layout file. Area " + "covered by entry %s is out of range.\n", prog_name, + line_num, cmos_entry->name); + break; + + case CMOS_AREA_TOO_WIDE: + fprintf(stderr, + "%s: Error on line %d of CMOS layout file. Area " + "covered by entry %s is too wide.\n", prog_name, + line_num, cmos_entry->name); + break; + + case LAYOUT_ENTRY_OVERLAP: + fprintf(stderr, + "%s: Error on line %d of CMOS layout file. Layouts " + "overlap for entries %s and %s.\n", prog_name, line_num, + cmos_entry->name, conflict->name); + break; + + case LAYOUT_ENTRY_BAD_LENGTH: + /* Silently ignore entries with zero length. Although this should + * never happen in practice, we should handle the case in a + * reasonable manner just to be safe. + */ + return; + + default: + BUG(); + } + + exit(1); +} + +/**************************************************************************** + * create_enum + * + * Create a CMOS enumeration structure representing the given information. + * Perform sanity checking on input parameters. + ****************************************************************************/ +static void create_enum(cmos_enum_t * cmos_enum, const char id_str[], + const char value_str[], const char text_str[]) +{ + cmos_enum->config_id = string_to_unsigned(id_str, "ID"); + cmos_enum->value = string_to_unsigned_long(value_str, "value"); + + if (strlen(text_str) >= CMOS_MAX_TEXT_LENGTH) { + fprintf(stderr, + "%s: Error on line %d of CMOS layout file: text too " + "long (max length is %d).\n", prog_name, line_num, + CMOS_MAX_TEXT_LENGTH - 1); + exit(1); + } + + strcpy(cmos_enum->text, text_str); +} + +/**************************************************************************** + * try_add_cmos_enum + * + * Attempt to add the given CMOS enum to our internal repository. Exit with + * an error message on failure. + ****************************************************************************/ +static void try_add_cmos_enum(const cmos_enum_t * cmos_enum) +{ + switch (add_cmos_enum(cmos_enum)) { + case OK: + return; + + case LAYOUT_DUPLICATE_ENUM: + fprintf(stderr, "%s: Error on line %d of CMOS layout file: " + "Enumeration found with duplicate ID/value combination.\n", + prog_name, line_num); + break; + + default: + BUG(); + } + + exit(1); +} + +/**************************************************************************** + * set_checksum_info + * + * Set CMOS checksum information according to input parameters and perform + * sanity checking on input parameters. + ****************************************************************************/ +static void set_checksum_info(const char start_str[], const char end_str[], + const char index_str[]) +{ + cmos_checksum_layout_t layout; + + /* These are bit positions that we want to convert to byte positions. */ + layout.summed_area_start = + string_to_unsigned(start_str, "CMOS checksummed area start"); + layout.summed_area_end = + string_to_unsigned(end_str, "CMOS checksummed area end"); + layout.checksum_at = + string_to_unsigned(index_str, "CMOS checksum location"); + + switch (checksum_layout_to_bytes(&layout)) { + case OK: + break; + + case LAYOUT_SUMMED_AREA_START_NOT_ALIGNED: + fprintf(stderr, + "%s: Error on line %d of CMOS layout file. CMOS " + "checksummed area start is not byte-aligned.\n", + prog_name, line_num); + goto fail; + + case LAYOUT_SUMMED_AREA_END_NOT_ALIGNED: + fprintf(stderr, + "%s: Error on line %d of CMOS layout file. CMOS " + "checksummed area end is not byte-aligned.\n", + prog_name, line_num); + goto fail; + + case LAYOUT_CHECKSUM_LOCATION_NOT_ALIGNED: + fprintf(stderr, + "%s: Error on line %d of CMOS layout file. CMOS " + "checksum location is not byte-aligned.\n", prog_name, + line_num); + goto fail; + + case LAYOUT_INVALID_SUMMED_AREA: + fprintf(stderr, + "%s: Error on line %d of CMOS layout file. CMOS " + "checksummed area end must be greater than CMOS checksummed " + "area start.\n", prog_name, line_num); + goto fail; + + case LAYOUT_CHECKSUM_OVERLAPS_SUMMED_AREA: + fprintf(stderr, + "%s: Error on line %d of CMOS layout file. CMOS " + "checksum overlaps checksummed area.\n", prog_name, + line_num); + goto fail; + + case LAYOUT_SUMMED_AREA_OUT_OF_RANGE: + fprintf(stderr, + "%s: Error on line %d of CMOS layout file. CMOS " + "checksummed area out of range.\n", prog_name, + line_num); + goto fail; + + case LAYOUT_CHECKSUM_LOCATION_OUT_OF_RANGE: + fprintf(stderr, + "%s: Error on line %d of CMOS layout file. CMOS " + "checksum location out of range.\n", prog_name, + line_num); + goto fail; + + default: + BUG(); + } + + cmos_checksum_start = layout.summed_area_start; + cmos_checksum_end = layout.summed_area_end; + cmos_checksum_index = layout.checksum_at; + return; + + fail: + exit(1); +} + +/**************************************************************************** + * cmos_entry_char_value + * + * Return the character representation of 'config'. + ****************************************************************************/ +static char cmos_entry_char_value(cmos_entry_config_t config) +{ + switch (config) { + case CMOS_ENTRY_ENUM: + return 'e'; + + case CMOS_ENTRY_HEX: + return 'h'; + + case CMOS_ENTRY_RESERVED: + return 'r'; + + case CMOS_ENTRY_STRING: + return 's'; + + default: + BUG(); + } + + return 0; /* not reached */ +} + +/**************************************************************************** + * get_layout_file_line + * + * Get a line of input from file 'f'. Store result in 'line' which is an + * array of 'line_buf_size' bytes. Return OK on success or an error code on + * failure. + ****************************************************************************/ +static int get_layout_file_line(FILE * f, char line[], int line_buf_size) +{ + switch (get_line_from_file(f, line, line_buf_size)) { + case OK: + return OK; + + case LINE_EOF: + return LINE_EOF; + + case LINE_TOO_LONG: + fprintf(stderr, + "%s: Error on line %d of CMOS layout file: Maximum " + "line length exceeded. Max is %d characters.\n", + prog_name, line_num, line_buf_size - 2); + break; + } + + exit(1); + return 1; /* keep compiler happy */ +} + +/**************************************************************************** + * string_to_unsigned + * + * Convert the string 'str' to an unsigned and return the result. + ****************************************************************************/ +static unsigned string_to_unsigned(const char str[], const char str_name[]) +{ + unsigned long n; + unsigned z; + + n = do_string_to_unsigned_long(str, str_name, ""); + + if ((z = (unsigned)n) != n) { + /* This could happen on an architecture in which + * sizeof(unsigned) < sizeof(unsigned long). + */ + fprintf(stderr, + "%s: Error on line %d of CMOS layout file: %s value is " + "out of range.\n", prog_name, line_num, str_name); + exit(1); + } + + return z; +} + +/**************************************************************************** + * string_to_unsigned_long + * + * Convert the string 'str' to an unsigned long and return the result. + ****************************************************************************/ +static unsigned long string_to_unsigned_long(const char str[], + const char str_name[]) +{ + return do_string_to_unsigned_long(str, str_name, " long"); +} + +/**************************************************************************** + * do_string_to_unsigned_long + * + * Convert the string 'str' to an unsigned long and return the result. Exit + * with an appropriate error message on failure. + ****************************************************************************/ +static unsigned long do_string_to_unsigned_long(const char str[], + const char str_name[], + const char blurb[]) +{ + unsigned long n; + char *p; + + n = strtoul(str, &p, 0); + + if (*p != '\0') { + fprintf(stderr, + "%s: Error on line %d of CMOS layout file: %s is not a " + "valid unsigned%s integer.\n", prog_name, line_num, + str_name, blurb); + exit(1); + } + + return n; +} |