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files.c
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files.c
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/* ------------------------------------------------------------------------- */
/* "files" : File handling for source code, the transcript file and the */
/* debugging information file; file handling and splicing of */
/* the output file. */
/* */
/* Note that filenaming conventions are left to the top-level */
/* routines in "inform.c", since they are tied up with ICL */
/* settings and are very host OS-dependent. */
/* */
/* Part of Inform 6.33 */
/* copyright (c) Graham Nelson 1993 - 2013 */
/* */
/* ------------------------------------------------------------------------- */
#include "header.h"
int input_file; /* Number of source files so far */
int32 total_chars_read; /* Characters read in (from all
source files put together) */
static int checksum_low_byte, /* For calculating the Z-machine's */
checksum_high_byte; /* "verify" checksum */
static int32 checksum_long; /* For the Glulx checksum, */
static int checksum_count; /* similarly */
/* ------------------------------------------------------------------------- */
/* Most of the information about source files is kept by "lexer.c"; this */
/* level is only concerned with file names and handles. */
/* ------------------------------------------------------------------------- */
FileId *InputFiles=NULL; /* Ids for all the source files */
static char *filename_storage, /* Translated filenames */
*filename_storage_p;
static int filename_storage_left;
/* ------------------------------------------------------------------------- */
/* When emitting debug information, we won't have addresses of routines, */
/* sequence points, Glulx objects (addresses of Z-machine objects aren't */
/* needed), globals, arrays, or grammar lines. We only have their */
/* offsets from base addresses, which won't be known until the end of */
/* compilation. Since everything else in the relevant debug records is */
/* known much earlier and is less convenient to store up, we emit the */
/* debug records with a placeholder value and then backpatch these */
/* placeholders. The following structs each store either an offset or a */
/* symbol index and the point in the debug information file where the */
/* corresponding address should be written once the base address is known. */
/* ------------------------------------------------------------------------- */
#define INITIAL_DEBUG_INFORMATION_BACKPATCH_ALLOCATION 65536
typedef struct value_and_backpatch_position_struct
{ int32 value;
fpos_t backpatch_position;
} value_and_backpatch_position;
typedef struct debug_backpatch_accumulator_struct
{ int32 number_of_values_to_backpatch;
int32 number_of_available_backpatches;
value_and_backpatch_position *values_and_backpatch_positions;
int32 (* backpatching_function)(int32);
} debug_backpatch_accumulator;
static debug_backpatch_accumulator object_backpatch_accumulator;
static debug_backpatch_accumulator packed_code_backpatch_accumulator;
static debug_backpatch_accumulator code_backpatch_accumulator;
static debug_backpatch_accumulator global_backpatch_accumulator;
static debug_backpatch_accumulator array_backpatch_accumulator;
static debug_backpatch_accumulator grammar_backpatch_accumulator;
/* ------------------------------------------------------------------------- */
/* File handles and names for temporary files. */
/* ------------------------------------------------------------------------- */
FILE *Temp1_fp=NULL, *Temp2_fp=NULL, *Temp3_fp=NULL;
char Temp1_Name[PATHLEN], Temp2_Name[PATHLEN], Temp3_Name[PATHLEN];
/* ------------------------------------------------------------------------- */
/* Opening and closing source code files */
/* ------------------------------------------------------------------------- */
#if defined(PC_WIN32) && defined(HAS_REALPATH)
#include <windows.h>
char *realpath(const char *path, char *resolved_path)
{
return GetFullPathNameA(path,PATHLEN,resolved_path,NULL) != 0 ? resolved_path : 0;
}
#endif
extern void load_sourcefile(char *filename_given, int same_directory_flag)
{
/* Meaning: open a new file of Inform source. (The lexer picks up on
this by noticing that input_file has increased.) */
char name[PATHLEN];
#ifdef HAS_REALPATH
char absolute_name[PATHLEN];
#endif
int x = 0;
FILE *handle;
if (input_file == MAX_SOURCE_FILES)
memoryerror("MAX_SOURCE_FILES", MAX_SOURCE_FILES);
do
{ x = translate_in_filename(x, name, filename_given, same_directory_flag,
(input_file==0)?1:0);
handle = fopen(name,"r");
} while ((handle == NULL) && (x != 0));
if (filename_storage_left <= (int)strlen(name))
memoryerror("MAX_SOURCE_FILES", MAX_SOURCE_FILES);
filename_storage_left -= strlen(name)+1;
strcpy(filename_storage_p, name);
InputFiles[input_file].filename = filename_storage_p;
filename_storage_p += strlen(name)+1;
if (debugfile_switch)
{ debug_file_printf("<source index=\"%d\">", input_file);
debug_file_printf("<given-path>");
debug_file_print_with_entities(filename_given);
debug_file_printf("</given-path>");
#ifdef HAS_REALPATH
if (realpath(name, absolute_name))
{ debug_file_printf("<resolved-path>");
debug_file_print_with_entities(absolute_name);
debug_file_printf("</resolved-path>");
}
#endif
debug_file_printf("<language>Inform 6</language>");
debug_file_printf("</source>");
}
InputFiles[input_file].handle = handle;
if (InputFiles[input_file].handle==NULL)
fatalerror_named("Couldn't open source file", name);
if (line_trace_level > 0) printf("\nOpening file \"%s\"\n",name);
input_file++;
}
static void close_sourcefile(int file_number)
{
if (InputFiles[file_number-1].handle == NULL) return;
/* Close this file. */
if (ferror(InputFiles[file_number-1].handle))
fatalerror_named("I/O failure: couldn't read from source file",
InputFiles[file_number-1].filename);
fclose(InputFiles[file_number-1].handle);
InputFiles[file_number-1].handle = NULL;
if (line_trace_level > 0) printf("\nClosing file\n");
}
extern void close_all_source(void)
{ int i;
for (i=0; i<input_file; i++) close_sourcefile(i+1);
}
/* ------------------------------------------------------------------------- */
/* Feeding source code up into the lexical analyser's buffer */
/* (see "lexer.c" for its specification) */
/* ------------------------------------------------------------------------- */
extern int file_load_chars(int file_number, char *buffer, int length)
{
int read_in; FILE *handle;
if (file_number-1 > input_file)
{ buffer[0] = 0; return 1; }
handle = InputFiles[file_number-1].handle;
if (handle == NULL)
{ buffer[0] = 0; return 1; }
read_in = fread(buffer, 1, length, handle);
total_chars_read += read_in;
if (read_in == length) return length;
close_sourcefile(file_number);
if (file_number == 1)
{ buffer[read_in] = 0;
buffer[read_in+1] = 0;
buffer[read_in+2] = 0;
buffer[read_in+3] = 0;
}
else
{ buffer[read_in] = '\n';
buffer[read_in+1] = ' ';
buffer[read_in+2] = ' ';
buffer[read_in+3] = ' ';
}
return(-(read_in+4));
}
/* ------------------------------------------------------------------------- */
/* Final assembly and output of the story file/module. */
/* ------------------------------------------------------------------------- */
FILE *sf_handle;
static void sf_put(int c)
{
if (!glulx_mode) {
/* The checksum is the unsigned sum mod 65536 of the bytes in the
story file from 0x0040 (first byte after header) to the end.
The link data does not contribute to the checksum of a module. */
checksum_low_byte += c;
if (checksum_low_byte>=256)
{ checksum_low_byte-=256;
if (++checksum_high_byte==256) checksum_high_byte=0;
}
}
else {
/* The checksum is the unsigned 32-bit sum of the entire story file,
considered as a list of 32-bit words, with the checksum field
being zero. */
switch (checksum_count) {
case 0:
checksum_long += (((int32)(c & 0xFF)) << 24);
break;
case 1:
checksum_long += (((int32)(c & 0xFF)) << 16);
break;
case 2:
checksum_long += (((int32)(c & 0xFF)) << 8);
break;
case 3:
checksum_long += ((int32)(c & 0xFF));
break;
}
checksum_count = (checksum_count+1) & 3;
}
fputc(c, sf_handle);
}
/* Recursive procedure to generate the Glulx compression table. */
static void output_compression(int entnum, int32 *size)
{
huffentity_t *ent = &(huff_entities[entnum]);
int32 val;
char *cx;
sf_put(ent->type);
(*size)++;
switch (ent->type) {
case 0:
val = Write_Strings_At + huff_entities[ent->u.branch[0]].addr;
sf_put((val >> 24) & 0xFF);
sf_put((val >> 16) & 0xFF);
sf_put((val >> 8) & 0xFF);
sf_put((val) & 0xFF);
(*size) += 4;
val = Write_Strings_At + huff_entities[ent->u.branch[1]].addr;
sf_put((val >> 24) & 0xFF);
sf_put((val >> 16) & 0xFF);
sf_put((val >> 8) & 0xFF);
sf_put((val) & 0xFF);
(*size) += 4;
output_compression(ent->u.branch[0], size);
output_compression(ent->u.branch[1], size);
break;
case 1:
/* no data */
break;
case 2:
sf_put(ent->u.ch);
(*size) += 1;
break;
case 3:
cx = (char *)abbreviations_at + ent->u.val*MAX_ABBREV_LENGTH;
while (*cx) {
sf_put(*cx);
cx++;
(*size) += 1;
}
sf_put('\0');
(*size) += 1;
break;
case 4:
val = unicode_usage_entries[ent->u.val].ch;
sf_put((val >> 24) & 0xFF);
sf_put((val >> 16) & 0xFF);
sf_put((val >> 8) & 0xFF);
sf_put((val) & 0xFF);
(*size) += 4;
break;
case 9:
val = abbreviations_offset + 4 + ent->u.val*4;
sf_put((val >> 24) & 0xFF);
sf_put((val >> 16) & 0xFF);
sf_put((val >> 8) & 0xFF);
sf_put((val) & 0xFF);
(*size) += 4;
break;
}
}
static void output_file_z(void)
{ FILE *fin; char new_name[PATHLEN];
int32 length, blanks=0, size, i, j, offset;
uint32 code_length, size_before_code, next_cons_check;
int use_function;
ASSERT_ZCODE();
/* At this point, construct_storyfile() has just been called. */
/* Enter the length information into the header. */
length=((int32) Write_Strings_At) + static_strings_extent;
if (module_switch) length += link_data_size +
zcode_backpatch_size +
zmachine_backpatch_size;
while ((length%length_scale_factor)!=0) { length++; blanks++; }
length=length/length_scale_factor;
zmachine_paged_memory[26]=(length & 0xff00)/0x100;
zmachine_paged_memory[27]=(length & 0xff);
/* To assist interpreters running a paged virtual memory system, Inform
writes files which are padded with zeros to the next multiple of
0.5K. This calculates the number of bytes of padding needed: */
while (((length_scale_factor*length)+blanks-1)%512 != 511) blanks++;
translate_out_filename(new_name, Code_Name);
sf_handle = fopen(new_name,"wb");
if (sf_handle == NULL)
fatalerror_named("Couldn't open output file", new_name);
#ifdef MAC_MPW
/* Set the type and creator to Andrew Plotkin's MaxZip, a popular
Z-code interpreter on the Macintosh */
if (!module_switch) fsetfileinfo(new_name, 'mxZR', 'ZCOD');
#endif
/* (1) Output the paged memory. */
for (i=0;i<64;i++)
fputc(zmachine_paged_memory[i], sf_handle);
size = 64;
checksum_low_byte = 0;
checksum_high_byte = 0;
for (i=64; i<Write_Code_At; i++)
{ sf_put(zmachine_paged_memory[i]); size++;
}
/* (2) Output the compiled code area. */
if (temporary_files_switch)
{ fclose(Temp2_fp);
fin=fopen(Temp2_Name,"rb");
if (fin==NULL)
fatalerror("I/O failure: couldn't reopen temporary file 2");
}
if (!OMIT_UNUSED_ROUTINES) {
/* This is the old-fashioned case, which is easy. All of zcode_area
(zmachine_pc bytes) will be output. next_cons_check will be
ignored, because j will never reach it. */
code_length = zmachine_pc;
use_function = TRUE;
next_cons_check = code_length+1;
}
else {
/* With dead function stripping, life is more complicated.
j will run from 0 to zmachine_pc, but only code_length of
those should be output. next_cons_check is the location of
the next function break; that's where we check whether
we're in a live function or a dead one.
(This logic is simplified by the assumption that a backpatch
marker will never straddle a function break.) */
if (zmachine_pc != df_total_size_before_stripping)
compiler_error("Code size does not match (zmachine_pc and df_total_size).");
code_length = df_total_size_after_stripping;
use_function = TRUE;
next_cons_check = 0;
df_prepare_function_iterate();
}
size_before_code = size;
j=0;
if (!module_switch)
for (i=0; i<zcode_backpatch_size; i=i+3)
{ int long_flag = TRUE;
offset
= 256*read_byte_from_memory_block(&zcode_backpatch_table, i+1)
+ read_byte_from_memory_block(&zcode_backpatch_table, i+2);
backpatch_error_flag = FALSE;
backpatch_marker
= read_byte_from_memory_block(&zcode_backpatch_table, i);
if (backpatch_marker >= 0x80) long_flag = FALSE;
backpatch_marker &= 0x7f;
offset = offset + (backpatch_marker/32)*0x10000;
while (offset+0x30000 < j) {
offset += 0x40000;
long_flag = !long_flag;
}
backpatch_marker &= 0x1f;
/* All code up until the next backpatch marker gets flushed out
as-is. (Unless we're in a stripped-out function.) */
while (j<offset) {
if (!use_function) {
while (j<offset && j<next_cons_check) {
/* get dummy value */
((temporary_files_switch)?fgetc(fin):
read_byte_from_memory_block(&zcode_area, j));
j++;
}
}
else {
while (j<offset && j<next_cons_check) {
size++;
sf_put((temporary_files_switch)?fgetc(fin):
read_byte_from_memory_block(&zcode_area, j));
j++;
}
}
if (j == next_cons_check)
next_cons_check = df_next_function_iterate(&use_function);
}
if (long_flag)
{ int32 v = (temporary_files_switch)?fgetc(fin):
read_byte_from_memory_block(&zcode_area, j);
v = 256*v + ((temporary_files_switch)?fgetc(fin):
read_byte_from_memory_block(&zcode_area, j+1));
j += 2;
if (use_function) {
v = backpatch_value(v);
sf_put(v/256); sf_put(v%256);
size += 2;
}
}
else
{ int32 v = (temporary_files_switch)?fgetc(fin):
read_byte_from_memory_block(&zcode_area, j);
j++;
if (use_function) {
v = backpatch_value(v);
sf_put(v);
size++;
}
}
if (j > next_cons_check)
compiler_error("Backpatch appears to straddle function break");
if (backpatch_error_flag)
{ printf("*** %s zcode offset=%08lx backpatch offset=%08lx ***\n",
(long_flag)?"long":"short", (long int) j, (long int) i);
}
}
/* Flush out the last bit of zcode_area, after the last backpatch
marker. */
offset = zmachine_pc;
while (j<offset) {
if (!use_function) {
while (j<offset && j<next_cons_check) {
/* get dummy value */
((temporary_files_switch)?fgetc(fin):
read_byte_from_memory_block(&zcode_area, j));
j++;
}
}
else {
while (j<offset && j<next_cons_check) {
size++;
sf_put((temporary_files_switch)?fgetc(fin):
read_byte_from_memory_block(&zcode_area, j));
j++;
}
}
if (j == next_cons_check)
next_cons_check = df_next_function_iterate(&use_function);
}
if (temporary_files_switch)
{ if (ferror(fin))
fatalerror("I/O failure: couldn't read from temporary file 2");
fclose(fin);
}
if (size_before_code + code_length != size)
compiler_error("Code output length did not match");
/* (3) Output any null bytes (required to reach a packed address)
before the strings area. */
while (size<Write_Strings_At) { sf_put(0); size++; }
/* (4) Output the static strings area. */
if (temporary_files_switch)
{ fclose(Temp1_fp);
fin=fopen(Temp1_Name,"rb");
if (fin==NULL)
fatalerror("I/O failure: couldn't reopen temporary file 1");
for (i=0; i<static_strings_extent; i++) sf_put(fgetc(fin));
if (ferror(fin))
fatalerror("I/O failure: couldn't read from temporary file 1");
fclose(fin);
remove(Temp1_Name); remove(Temp2_Name);
}
else
for (i=0; i<static_strings_extent; i++) {
sf_put(read_byte_from_memory_block(&static_strings_area,i));
size++;
}
/* (5) Output the linking data table (in the case of a module). */
if (temporary_files_switch)
{ if (module_switch)
{ fclose(Temp3_fp);
fin=fopen(Temp3_Name,"rb");
if (fin==NULL)
fatalerror("I/O failure: couldn't reopen temporary file 3");
for (j=0; j<link_data_size; j++) sf_put(fgetc(fin));
if (ferror(fin))
fatalerror("I/O failure: couldn't read from temporary file 3");
fclose(fin);
remove(Temp3_Name);
}
}
else
if (module_switch)
for (i=0; i<link_data_size; i++)
sf_put(read_byte_from_memory_block(&link_data_area,i));
if (module_switch)
{ for (i=0; i<zcode_backpatch_size; i++)
sf_put(read_byte_from_memory_block(&zcode_backpatch_table, i));
for (i=0; i<zmachine_backpatch_size; i++)
sf_put(read_byte_from_memory_block(&zmachine_backpatch_table, i));
}
/* (6) Output null bytes to reach a multiple of 0.5K. */
while (blanks>0) { sf_put(0); blanks--; }
if (ferror(sf_handle))
fatalerror("I/O failure: couldn't write to story file");
fseek(sf_handle, 28, SEEK_SET);
fputc(checksum_high_byte, sf_handle);
fputc(checksum_low_byte, sf_handle);
if (ferror(sf_handle))
fatalerror("I/O failure: couldn't backtrack on story file for checksum");
fclose(sf_handle);
/* Write a copy of the header into the debugging information file
(mainly so that it can be used to identify which story file matches
with which debugging info file). */
if (debugfile_switch)
{ debug_file_printf("<story-file-prefix>");
for (i = 0; i < 63; i += 3)
{ if (i == 27)
{ debug_file_print_base_64_triple
(zmachine_paged_memory[27],
checksum_high_byte,
checksum_low_byte);
} else
{ debug_file_print_base_64_triple
(zmachine_paged_memory[i],
zmachine_paged_memory[i + 1],
zmachine_paged_memory[i + 2]);
}
}
debug_file_print_base_64_single(zmachine_paged_memory[63]);
debug_file_printf("</story-file-prefix>");
}
#ifdef ARCHIMEDES
{ char settype_command[PATHLEN];
sprintf(settype_command, "settype %s %s",
new_name, riscos_file_type());
system(settype_command);
}
#endif
#ifdef MAC_FACE
if (module_switch)
InformFiletypes (new_name, INF_MODULE_TYPE);
else
InformFiletypes (new_name, INF_ZCODE_TYPE);
#endif
}
static void output_file_g(void)
{ FILE *fin; char new_name[PATHLEN];
int32 size, i, j, offset;
int32 VersionNum;
uint32 code_length, size_before_code, next_cons_check;
int use_function;
int first_byte_of_triple, second_byte_of_triple, third_byte_of_triple;
ASSERT_GLULX();
/* At this point, construct_storyfile() has just been called. */
translate_out_filename(new_name, Code_Name);
sf_handle = fopen(new_name,"wb+");
if (sf_handle == NULL)
fatalerror_named("Couldn't open output file", new_name);
#ifdef MAC_MPW
/* Set the type and creator to Andrew Plotkin's MaxZip, a popular
Z-code interpreter on the Macintosh */
if (!module_switch) fsetfileinfo(new_name, 'mxZR', 'ZCOD');
#endif
checksum_long = 0;
checksum_count = 0;
/* Determine the version number. */
VersionNum = 0x00020000;
/* Increase for various features the game may have used. */
if (no_unicode_chars != 0 || (uses_unicode_features)) {
VersionNum = 0x00030000;
}
if (uses_memheap_features) {
VersionNum = 0x00030100;
}
if (uses_acceleration_features) {
VersionNum = 0x00030101;
}
if (uses_float_features) {
VersionNum = 0x00030102;
}
/* And check if the user has requested a specific version. */
if (requested_glulx_version) {
if (requested_glulx_version < VersionNum) {
static char error_message_buff[256];
sprintf(error_message_buff, "Version 0x%08lx requested, but \
game features require version 0x%08lx", (long)requested_glulx_version, (long)VersionNum);
warning(error_message_buff);
}
else {
VersionNum = requested_glulx_version;
}
}
/* (1) Output the header. We use sf_put here, instead of fputc,
because the header is included in the checksum. */
/* Magic number */
sf_put('G');
sf_put('l');
sf_put('u');
sf_put('l');
/* Version number. */
sf_put((VersionNum >> 24));
sf_put((VersionNum >> 16));
sf_put((VersionNum >> 8));
sf_put((VersionNum));
/* RAMSTART */
sf_put((Write_RAM_At >> 24));
sf_put((Write_RAM_At >> 16));
sf_put((Write_RAM_At >> 8));
sf_put((Write_RAM_At));
/* EXTSTART, or game file size */
sf_put((Out_Size >> 24));
sf_put((Out_Size >> 16));
sf_put((Out_Size >> 8));
sf_put((Out_Size));
/* ENDMEM, which the game file size plus MEMORY_MAP_EXTENSION */
i = Out_Size + MEMORY_MAP_EXTENSION;
sf_put((i >> 24));
sf_put((i >> 16));
sf_put((i >> 8));
sf_put((i));
/* STACKSIZE */
sf_put((MAX_STACK_SIZE >> 24));
sf_put((MAX_STACK_SIZE >> 16));
sf_put((MAX_STACK_SIZE >> 8));
sf_put((MAX_STACK_SIZE));
/* Initial function to call. Inform sets things up so that this
is the start of the executable-code area. */
sf_put((Write_Code_At >> 24));
sf_put((Write_Code_At >> 16));
sf_put((Write_Code_At >> 8));
sf_put((Write_Code_At));
/* String-encoding table. */
sf_put((Write_Strings_At >> 24));
sf_put((Write_Strings_At >> 16));
sf_put((Write_Strings_At >> 8));
sf_put((Write_Strings_At));
/* Checksum -- zero for the moment. */
sf_put(0x00);
sf_put(0x00);
sf_put(0x00);
sf_put(0x00);
size = GLULX_HEADER_SIZE;
/* (1a) Output the eight-byte memory layout identifier. */
sf_put('I'); sf_put('n'); sf_put('f'); sf_put('o');
sf_put(0); sf_put(1); sf_put(0); sf_put(0);
/* (1b) Output the rest of the Inform-specific data. */
/* Inform version number */
sf_put('0' + ((RELEASE_NUMBER/100)%10));
sf_put('.');
sf_put('0' + ((RELEASE_NUMBER/10)%10));
sf_put('0' + RELEASE_NUMBER%10);
/* Glulx back-end version number */
sf_put('0' + ((GLULX_RELEASE_NUMBER/100)%10));
sf_put('.');
sf_put('0' + ((GLULX_RELEASE_NUMBER/10)%10));
sf_put('0' + GLULX_RELEASE_NUMBER%10);
/* Game release number */
sf_put((release_number>>8) & 0xFF);
sf_put(release_number & 0xFF);
/* Game serial number */
{
char serialnum[8];
write_serial_number(serialnum);
for (i=0; i<6; i++)
sf_put(serialnum[i]);
}
size += GLULX_STATIC_ROM_SIZE;
/* (2) Output the compiled code area. */
if (temporary_files_switch)
{ fclose(Temp2_fp);
fin=fopen(Temp2_Name,"rb");
if (fin==NULL)
fatalerror("I/O failure: couldn't reopen temporary file 2");
}
if (!OMIT_UNUSED_ROUTINES) {
/* This is the old-fashioned case, which is easy. All of zcode_area
(zmachine_pc bytes) will be output. next_cons_check will be
ignored, because j will never reach it. */
code_length = zmachine_pc;
use_function = TRUE;
next_cons_check = code_length+1;
}
else {
/* With dead function stripping, life is more complicated.
j will run from 0 to zmachine_pc, but only code_length of
those should be output. next_cons_check is the location of
the next function break; that's where we check whether
we're in a live function or a dead one.
(This logic is simplified by the assumption that a backpatch
marker will never straddle a function break.) */
if (zmachine_pc != df_total_size_before_stripping)
compiler_error("Code size does not match (zmachine_pc and df_total_size).");
code_length = df_total_size_after_stripping;
use_function = TRUE;
next_cons_check = 0;
df_prepare_function_iterate();
}
size_before_code = size;
j=0;
if (!module_switch)
for (i=0; i<zcode_backpatch_size; i=i+6) {
int data_len;
int32 v;
offset =
(read_byte_from_memory_block(&zcode_backpatch_table, i+2) << 24)
| (read_byte_from_memory_block(&zcode_backpatch_table, i+3) << 16)
| (read_byte_from_memory_block(&zcode_backpatch_table, i+4) << 8)
| (read_byte_from_memory_block(&zcode_backpatch_table, i+5));
backpatch_error_flag = FALSE;
backpatch_marker =
read_byte_from_memory_block(&zcode_backpatch_table, i);
data_len =
read_byte_from_memory_block(&zcode_backpatch_table, i+1);
/* All code up until the next backpatch marker gets flushed out
as-is. (Unless we're in a stripped-out function.) */
while (j<offset) {
if (!use_function) {
while (j<offset && j<next_cons_check) {
/* get dummy value */
((temporary_files_switch)?fgetc(fin):
read_byte_from_memory_block(&zcode_area, j));
j++;
}
}
else {
while (j<offset && j<next_cons_check) {
size++;
sf_put((temporary_files_switch)?fgetc(fin):
read_byte_from_memory_block(&zcode_area, j));
j++;
}
}
if (j == next_cons_check)
next_cons_check = df_next_function_iterate(&use_function);
}
/* Write out the converted value of the backpatch marker.
(Unless we're in a stripped-out function.) */
switch (data_len) {
case 4:
v = ((temporary_files_switch)?fgetc(fin):
read_byte_from_memory_block(&zcode_area, j));
v = (v << 8) | ((temporary_files_switch)?fgetc(fin):
read_byte_from_memory_block(&zcode_area, j+1));
v = (v << 8) | ((temporary_files_switch)?fgetc(fin):
read_byte_from_memory_block(&zcode_area, j+2));
v = (v << 8) | ((temporary_files_switch)?fgetc(fin):
read_byte_from_memory_block(&zcode_area, j+3));
j += 4;
if (!use_function)
break;
v = backpatch_value(v);
sf_put((v >> 24) & 0xFF);
sf_put((v >> 16) & 0xFF);
sf_put((v >> 8) & 0xFF);
sf_put((v) & 0xFF);
size += 4;
break;
case 2:
v = ((temporary_files_switch)?fgetc(fin):
read_byte_from_memory_block(&zcode_area, j));
v = (v << 8) | ((temporary_files_switch)?fgetc(fin):
read_byte_from_memory_block(&zcode_area, j+1));
j += 2;
if (!use_function)
break;
v = backpatch_value(v);
if (v >= 0x10000) {
printf("*** backpatch value does not fit ***\n");
backpatch_error_flag = TRUE;
}
sf_put((v >> 8) & 0xFF);
sf_put((v) & 0xFF);
size += 2;
break;
case 1:
v = ((temporary_files_switch)?fgetc(fin):
read_byte_from_memory_block(&zcode_area, j));
j += 1;
if (!use_function)
break;
v = backpatch_value(v);
if (v >= 0x100) {
printf("*** backpatch value does not fit ***\n");
backpatch_error_flag = TRUE;
}
sf_put((v) & 0xFF);
size += 1;
break;
default:
printf("*** unknown backpatch data len = %d ***\n",
data_len);
backpatch_error_flag = TRUE;
}
if (j > next_cons_check)
compiler_error("Backpatch appears to straddle function break");
if (backpatch_error_flag) {
printf("*** %d bytes zcode offset=%08lx backpatch offset=%08lx ***\n",
data_len, (long int) j, (long int) i);
}
}
/* Flush out the last bit of zcode_area, after the last backpatch
marker. */
offset = zmachine_pc;
while (j<offset) {
if (!use_function) {
while (j<offset && j<next_cons_check) {
/* get dummy value */
((temporary_files_switch)?fgetc(fin):
read_byte_from_memory_block(&zcode_area, j));
j++;
}
}
else {
while (j<offset && j<next_cons_check) {
size++;
sf_put((temporary_files_switch)?fgetc(fin):
read_byte_from_memory_block(&zcode_area, j));
j++;
}
}
if (j == next_cons_check)
next_cons_check = df_next_function_iterate(&use_function);
}
if (temporary_files_switch)
{ if (ferror(fin))
fatalerror("I/O failure: couldn't read from temporary file 2");
fclose(fin);
}
if (size_before_code + code_length != size)
compiler_error("Code output length did not match");
/* (4) Output the static strings area. */
if (temporary_files_switch) {
fseek(Temp1_fp, 0, SEEK_SET);
}
{
int32 ix, lx;
int ch, jx, curbyte, bx;
int depth;
huffbitlist_t *bits;
int32 origsize;
origsize = size;
if (compression_switch) {
/* The 12-byte table header. */
lx = compression_table_size;
sf_put((lx >> 24) & 0xFF);
sf_put((lx >> 16) & 0xFF);
sf_put((lx >> 8) & 0xFF);
sf_put((lx) & 0xFF);
size += 4;
sf_put((no_huff_entities >> 24) & 0xFF);
sf_put((no_huff_entities >> 16) & 0xFF);
sf_put((no_huff_entities >> 8) & 0xFF);
sf_put((no_huff_entities) & 0xFF);
size += 4;
lx = Write_Strings_At + 12;
sf_put((lx >> 24) & 0xFF);
sf_put((lx >> 16) & 0xFF);
sf_put((lx >> 8) & 0xFF);
sf_put((lx) & 0xFF);
size += 4;
output_compression(huff_entity_root, &size);
}
if (size - origsize != compression_table_size)
compiler_error("Compression table size mismatch.");
origsize = size;
for (lx=0, ix=0; lx<no_strings; lx++) {
int escapelen=0, escapetype=0;
int done=FALSE;
int32 escapeval;
if (compression_switch)
sf_put(0xE1); /* type byte -- compressed string */
else
sf_put(0xE0); /* type byte -- non-compressed string */
size++;
jx = 0;
curbyte = 0;
while (!done) {
if (temporary_files_switch)
ch = fgetc(Temp1_fp);
else
ch = read_byte_from_memory_block(&static_strings_area, ix);
ix++;
if (ix > static_strings_extent || ch < 0)
compiler_error("Read too much not-yet-compressed text.");