void z_restart (void)
{
static bool first_restart = TRUE;
flush_buffer ();
os_restart_game (RESTART_BEGIN);
seed_random (0);
if (!first_restart) {
fseek (story_fp, blorb_ofs, SEEK_SET);
if (fread (zmp, 1, h_dynamic_size, story_fp) != h_dynamic_size)
os_fatal ("Story file read error");
} else first_restart = FALSE;
restart_header ();
restart_screen ();
sp = fp = stack + STACK_SIZE;
frame_count = 0;
if (h_version != V6) {
long pc = (long) h_start_pc;
SET_PC (pc);
} else call (h_start_pc, 0, NULL, 0);
os_restart_game (RESTART_END);
}/* z_restart */
/* get a character. Exit with no fuss on EOF. */
static int xgetchar(void)
{
int c = getchar();
if (c == EOF) {
if (feof(stdin)) {
fprintf(stderr, "\nEOT\n");
exit(0);
}
os_fatal(strerror(errno));
}
return c;
}
static void bt_sighandler(int sig, siginfo_t *info,
void *secret) {
void *trace[16];
char *nam;
int i, trace_size = 0;
// ucontext_t *uc = (ucontext_t *)secret;
if (sig == SIGINT)
os_fatal("Emergency exit!\n\n(Signal SIGINT received)");
/* Do something useful with siginfo_t */
printf("\nInterpreter bug!\nSignal %d ", sig);
if ((nam = getsigname(sig))) printf("[%s] ",nam);
// printf("from %p", (void *)uc->uc_mcontext.gregs[_PROG_COUNTER]);
if (sig == SIGSEGV)
printf(" [faulty address is %p]",info->si_addr);
printf("\n");
trace_size = backtrace(trace, 16);
/* overwrite sigaction with caller's address */
// trace[1] = (void *) uc->uc_mcontext.gregs[_PROG_COUNTER];
/* skip first stack frame (points here) */
printf("Backtrace:\n");
// messages = backtrace_symbols(trace, trace_size);
// for (i=1; i<trace_size; ++i)
// printf("[bt] %s\n", messages[i]);
for (i=1;i<trace_size;i++)
{
printf(" "); fflush(stdout);
backtrace_symbols_fd(trace+i, 1,fileno(stdout));
}
exit(0);
}
void runtime_error (int errnum)
{
int wasfirst;
if (errnum <= 0 || errnum > ERR_NUM_ERRORS)
return;
if (f_setup.err_report_mode == ERR_REPORT_FATAL
|| (!f_setup.ignore_errors && errnum <= ERR_MAX_FATAL)) {
flush_buffer ();
os_fatal (err_messages[errnum - 1]);
return;
}
wasfirst = (error_count[errnum - 1] == 0);
error_count[errnum - 1]++;
if ((f_setup.err_report_mode == ERR_REPORT_ALWAYS)
|| (f_setup.err_report_mode == ERR_REPORT_ONCE && wasfirst)) {
long pc;
GET_PC (pc);
print_string ("Warning: ");
print_string (err_messages[errnum - 1]);
print_string (" (PC = ");
print_long (pc, 16);
print_char (')');
if (f_setup.err_report_mode == ERR_REPORT_ONCE) {
print_string (" (will ignore further occurrences)");
} else {
print_string (" (occurence ");
print_long (error_count[errnum - 1], 10);
print_char (')');
}
new_line ();
}
} /* report_error */
void os_init_screen (void)
{
/*trace(TRACE_CALLS);*/
if (initscr() == NULL) { /* Set up curses */
os_fatal("Unable to initialize curses. Maybe your $TERM setting is bad.");
exit(1);
}
u_setup.curses_active = 1; /* Let os_fatal know curses is running */
cbreak(); /* Raw input mode, no line processing */
noecho(); /* No input echo */
nonl(); /* No newline translation */
intrflush(stdscr, TRUE); /* Flush output on interrupt */
keypad(stdscr, TRUE); /* Enable the keypad and function keys */
scrollok(stdscr, FALSE); /* No scrolling unless explicitly asked for */
if (h_version == V3 && u_setup.tandy_bit != 0)
h_config |= CONFIG_TANDY;
if (h_version == V3)
h_config |= CONFIG_SPLITSCREEN;
if (h_version >= V4)
h_config |= CONFIG_BOLDFACE | CONFIG_EMPHASIS | CONFIG_FIXED | CONFIG_TIMEDINPUT;
if (h_version >= V5)
h_flags &= ~(GRAPHICS_FLAG | MOUSE_FLAG | MENU_FLAG);
#ifdef NO_SOUND
if (h_version >= V5)
h_flags &= ~SOUND_FLAG;
if (h_version == V3)
h_flags &= ~OLD_SOUND_FLAG;
#else
if ((h_version >= 5) && (h_flags & SOUND_FLAG))
h_flags |= SOUND_FLAG;
if ((h_version == 3) && (h_flags & OLD_SOUND_FLAG))
h_flags |= OLD_SOUND_FLAG;
if ((h_version == 6) && (f_setup.sound != 0))
h_config |= CONFIG_SOUND;
#endif
if (h_version >= V5 && (h_flags & UNDO_FLAG))
if (f_setup.undo_slots == 0)
h_flags &= ~UNDO_FLAG;
getmaxyx(stdscr, h_screen_rows, h_screen_cols);
if (u_setup.screen_height != -1)
h_screen_rows = u_setup.screen_height;
if (u_setup.screen_width != -1)
h_screen_cols = u_setup.screen_width;
h_screen_width = h_screen_cols;
h_screen_height = h_screen_rows;
h_font_width = 1;
h_font_height = 1;
/* Must be after screen dimensions are computed. */
if (h_version == V6) {
if (unix_init_pictures())
h_config |= CONFIG_PICTURES;
else
h_flags &= ~GRAPHICS_FLAG;
}
/* Use the ms-dos interpreter number for v6, because that's the
* kind of graphics files we understand. Otherwise, use DEC. */
h_interpreter_number = h_version == 6 ? INTERP_MSDOS : INTERP_DEC_20;
h_interpreter_version = 'F';
#ifdef COLOR_SUPPORT
/* Enable colors if the terminal supports them, the user did not
* disable colors, and the game or user requested colors. User
* requests them by specifying a foreground or background.
*/
u_setup.color_enabled = (has_colors()
&& !u_setup.disable_color
&& (((h_version >= 5) && (h_flags & COLOUR_FLAG))
|| (u_setup.foreground_color != -1)
|| (u_setup.background_color != -1)));
/* Maybe we don't want to muck about with changing $TERM to
* xterm-color which some supposedly current Unicies still don't
* understand.
*/
if (u_setup.force_color)
u_setup.color_enabled = TRUE;
if (u_setup.color_enabled) {
h_config |= CONFIG_COLOUR;
h_flags |= COLOUR_FLAG; /* FIXME: beyond zork handling? */
start_color();
h_default_foreground =
(u_setup.foreground_color == -1)
? FOREGROUND_DEF : u_setup.foreground_color;
h_default_background =
(u_setup.background_color ==-1)
? BACKGROUND_DEF : u_setup.background_color;
} else
#endif /* COLOR_SUPPORT */
{
/* Set these per spec 8.3.2. */
h_default_foreground = WHITE_COLOUR;
h_default_background = BLACK_COLOUR;
if (h_flags & COLOUR_FLAG) h_flags &= ~COLOUR_FLAG;
}
os_set_colour(h_default_foreground, h_default_background);
os_erase_area(1, 1, h_screen_rows, h_screen_cols, 0);
}/* os_init_screen */
void z_restore (void)
{
FILE *gfp;
zword success = 0;
if (zargc != 0) {
/* Get the file name */
/* Open auxilary file */
if ((gfp = frotzopenprompt(FILE_LOAD_AUX)) == NULL)
goto finished;
/* Load auxilary file */
success = fread (zmp + zargs[0], 1, zargs[1], gfp);
/* Close auxilary file */
fclose (gfp);
} else {
long pc;
zword release;
zword addr;
int i;
/* Open game file */
if ((gfp = frotzopenprompt(FILE_RESTORE)) == NULL)
goto finished;
if (f_setup.save_quetzal) {
success = restore_quetzal (gfp, story_fp, blorb_ofs);
} else {
/* Load game file */
release = (unsigned) fgetc (gfp) << 8;
release |= fgetc (gfp);
(void) fgetc (gfp);
(void) fgetc (gfp);
/* Check the release number */
if (release == h_release) {
pc = (long) fgetc (gfp) << 16;
pc |= (unsigned) fgetc (gfp) << 8;
pc |= fgetc (gfp);
SET_PC (pc);
sp = stack + (fgetc (gfp) << 8);
sp += fgetc (gfp);
fp = stack + (fgetc (gfp) << 8);
fp += fgetc (gfp);
for (i = (int) (sp - stack); i < STACK_SIZE; i++) {
stack[i] = (unsigned) fgetc (gfp) << 8;
stack[i] |= fgetc (gfp);
}
fseek (story_fp, blorb_ofs, SEEK_SET);
for (addr = 0; addr < h_dynamic_size; addr++) {
int skip = fgetc (gfp);
for (i = 0; i < skip; i++)
zmp[addr++] = fgetc (story_fp);
zmp[addr] = fgetc (gfp);
(void) fgetc (story_fp);
}
/* Check for errors */
if (ferror (gfp) || ferror (story_fp) || addr != h_dynamic_size)
success = -1;
else
/* Success */
success = 2;
} else print_string ("Invalid save file\n");
}
if ((short) success >= 0) {
/* Close game file */
fclose (gfp);
if ((short) success > 0) {
zbyte old_screen_rows;
zbyte old_screen_cols;
/* In V3, reset the upper window. */
if (h_version == V3)
split_window (0);
LOW_BYTE (H_SCREEN_ROWS, old_screen_rows);
LOW_BYTE (H_SCREEN_COLS, old_screen_cols);
/* Reload cached header fields. */
restart_header ();
/*
* Since QUETZAL files may be saved on many different machines,
* the screen sizes may vary a lot. Erasing the status window
* seems to cover up most of the resulting badness.
*/
if (h_version > V3 && h_version != V6
&& (h_screen_rows != old_screen_rows
|| h_screen_cols != old_screen_cols))
erase_window (1);
}
} else
os_fatal ("Error reading save file");
}
finished:
if (h_version <= V3)
branch (success);
else
store (success);
}/* z_restore */
void init_memory (void)
{
long size;
zword addr;
unsigned n;
int i, j;
static struct {
enum story story_id;
zword release;
zbyte serial[6];
} records[] = {
{ SHERLOCK, 21, "871214" },
{ SHERLOCK, 26, "880127" },
{ BEYOND_ZORK, 47, "870915" },
{ BEYOND_ZORK, 49, "870917" },
{ BEYOND_ZORK, 51, "870923" },
{ BEYOND_ZORK, 57, "871221" },
{ ZORK_ZERO, 296, "881019" },
{ ZORK_ZERO, 366, "890323" },
{ ZORK_ZERO, 383, "890602" },
{ ZORK_ZERO, 393, "890714" },
{ SHOGUN, 292, "890314" },
{ SHOGUN, 295, "890321" },
{ SHOGUN, 311, "890510" },
{ SHOGUN, 322, "890706" },
{ ARTHUR, 54, "890606" },
{ ARTHUR, 63, "890622" },
{ ARTHUR, 74, "890714" },
{ JOURNEY, 26, "890316" },
{ JOURNEY, 30, "890322" },
{ JOURNEY, 77, "890616" },
{ JOURNEY, 83, "890706" },
{ LURKING_HORROR, 203, "870506" },
{ LURKING_HORROR, 219, "870912" },
{ LURKING_HORROR, 221, "870918" },
{ UNKNOWN, 0, "------" }
};
/* Open story file */
{
giblorb_map_t *map;
giblorb_result_t res;
char magic[4] = "XXXX";
strid_t file;
file = game_file_stream;
fread(magic, 1, 4, file);
if (!memcmp(magic, "FORM", 4))
{
if (giblorb_set_resource_map(file))
os_fatal("This Blorb file seems to be invalid.");
map = giblorb_get_resource_map();
if (giblorb_load_resource(map, giblorb_method_FilePos,
&res, giblorb_ID_Exec, 0))
os_fatal("This Blorb file does not contain an executable chunk.");
if (res.chunktype != giblorb_make_id('Z','C','O','D'))
os_fatal("This Blorb file contains an executable chunk, but it is not a Z-code file.");
story_fp = file;
blorb_ofs = res.data.startpos;
blorb_len = res.length;
}
else
{
story_fp = file;
blorb_ofs = 0;
fseek(story_fp, 0, SEEK_END);
blorb_len = ftell(story_fp);
}
}
if (blorb_len < 64)
os_fatal("This file is too small to be a Z-code file.");
/* Allocate memory for story header */
if ((zmp = (zbyte *) malloc (64)) == NULL)
os_fatal ("Out of memory");
/* Load header into memory */
fseek(story_fp, blorb_ofs, 0);
if (fread (zmp, 1, 64, story_fp) != 64)
os_fatal ("Story file read error");
/* Copy header fields to global variables */
LOW_BYTE (H_VERSION, h_version);
if (h_version < V1 || h_version > V8)
os_fatal ("Unknown Z-code version");
if (h_version == V6)
os_fatal ("Cannot play Z-code version 6");
LOW_BYTE (H_CONFIG, h_config);
if (h_version == V3 && (h_config & CONFIG_BYTE_SWAPPED))
os_fatal ("Byte swapped story file");
LOW_WORD (H_RELEASE, h_release);
LOW_WORD (H_RESIDENT_SIZE, h_resident_size);
LOW_WORD (H_START_PC, h_start_pc);
LOW_WORD (H_DICTIONARY, h_dictionary);
LOW_WORD (H_OBJECTS, h_objects);
LOW_WORD (H_GLOBALS, h_globals);
LOW_WORD (H_DYNAMIC_SIZE, h_dynamic_size);
LOW_WORD (H_FLAGS, h_flags);
for (i = 0, addr = H_SERIAL; i < 6; i++, addr++)
LOW_BYTE (addr, h_serial[i]);
/* Auto-detect buggy story files that need special fixes */
story_id = UNKNOWN;
for (i = 0; records[i].story_id != UNKNOWN; i++) {
if (h_release == records[i].release) {
for (j = 0; j < 6; j++)
if (h_serial[j] != records[i].serial[j])
goto no_match;
story_id = records[i].story_id;
}
no_match: ; /* null statement */
}
LOW_WORD (H_ABBREVIATIONS, h_abbreviations);
LOW_WORD (H_FILE_SIZE, h_file_size);
/* Calculate story file size in bytes */
if (h_file_size != 0) {
story_size = (long) 2 * h_file_size;
if (h_version >= V4)
story_size *= 2;
if (h_version >= V6)
story_size *= 2;
} else { /* some old games lack the file size entry */
story_size = blorb_len;
}
LOW_WORD (H_CHECKSUM, h_checksum);
LOW_WORD (H_ALPHABET, h_alphabet);
LOW_WORD (H_FUNCTIONS_OFFSET, h_functions_offset);
LOW_WORD (H_STRINGS_OFFSET, h_strings_offset);
LOW_WORD (H_TERMINATING_KEYS, h_terminating_keys);
LOW_WORD (H_EXTENSION_TABLE, h_extension_table);
/* Zork Zero Macintosh doesn't have the graphics flag set */
if (story_id == ZORK_ZERO && h_release == 296)
h_flags |= GRAPHICS_FLAG;
/* Adjust opcode tables */
if (h_version <= V4) {
op0_opcodes[0x09] = z_pop;
op1_opcodes[0x0f] = z_not;
} else {
op0_opcodes[0x09] = z_catch;
op1_opcodes[0x0f] = z_call_n;
}
/* Allocate memory for story data */
if ((zmp = (zbyte *) realloc (zmp, story_size)) == NULL)
os_fatal ("Out of memory");
/* Load story file in chunks of 32KB */
n = 0x8000;
for (size = 64; size < story_size; size += n) {
if (story_size - size < 0x8000)
n = (unsigned) (story_size - size);
SET_PC (size);
if (fread (pcp, 1, n, story_fp) != n)
os_fatal ("Story file read error");
}
/* Read header extension table */
hx_table_size = get_header_extension (HX_TABLE_SIZE);
hx_unicode_table = get_header_extension (HX_UNICODE_TABLE);
}/* init_memory */
static void myhandler( int s)
{
resethandlers();
os_fatal("Signal %d received %s",s,signame(s));
}
void __stack_chk_fail(void)
{
os_fatal("stack_chk_fail");
}
void abort()
{
os_fatal("abort()");
}
