gsplus/src/debug_template.re2c

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/*
*
* Load and parse GSBug templates and Nifty List Data.
*/
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#include "defc.h"
#ifdef WIN32
char *strndup(const char *s, size_t maxlen) {
char *cp;
size_t l = strlen(s);
if (l > maxlen) l = maxlen;
cp = malloc(l + 1);
if (cp) {
memcpy(cp, s, l);
cp[l] = 0;
}
return cp;
}
#endif
/*!re2c
re2c:define:YYCTYPE = char;
re2c:define:YYCURSOR = cp;
re2c:yyfill:enable = 0;
eol = "\x00";
ws = [ \t\r\n];
x = [0-9a-fA-F];
*/
/* format
_START name
name [type [size]] *
_END
*/
struct field {
char *name;
int type;
int count;
};
struct record {
char *name;
int total_size; /* total size */
int field_count; /* # of fields */
int field_index; /* starting index into the fields array */
};
static struct record *records = NULL;
static int record_count = 0;
static int record_alloc = 0;
static struct field *fields = NULL;
static int field_count = 0;
static int field_alloc = 0;
static int record_compare(const void *a, const void *b) {
const struct record *aa = a;
const struct record *bb = b;
int rv;
rv = strcasecmp(aa->name, bb->name);
//if (rv == 0) return aa->total_size - bb->total_size;
return rv;
}
/* 192 records in the standard file... */
static void add_record(struct record *r) {
/* calc size and count */
int i;
r->field_count = field_count - r->field_index;
for (i = r->field_index; i < field_count; ++i) {
int size = fields[i].type;
if (size > 4) size = 4;
r->total_size += size * fields[i].count;
}
if (record_count == record_alloc) {
size_t size = (record_alloc + 256) * sizeof(struct record);
void *tmp = realloc(records, size);
if (!tmp) return; /* oops */
records = tmp;
record_alloc += 256;
}
records[record_count++] = *r;
}
/* average ~14 fields per record */
static void add_field(struct field *f) {
if (field_count == field_alloc) {
size_t size = (field_alloc + 512) * sizeof(struct field);
void *tmp = realloc(fields, size);
if (!tmp) return; /* oops */
fields = tmp;
field_alloc += 512;
}
fields[field_count++] = *f;
}
static char *rtrim(char *cp) {
int l = strlen(cp);
while (l && isspace(cp[l-1])) --l;
cp[l] = 0;
return cp;
}
static char *ltrim(char *cp) {
while (isspace(*cp)) ++cp;
return cp;
}
/* 0 - no field, 1 - ok, -1 - warning */
static int parse_field(const char *cp, struct field *f) {
const char *start;
const char *end;
const char *YYMARKER = NULL;
const char *YYCTXMARKER = NULL;
int type = 0;
int count = 0;
start = cp;
for(;;) {
/*!re2c
eol | ws { --cp; break; }
* { continue; }
*/
}
end = cp;
if (start == end) return 0;
f->name = strndup(start, end - start);
f->type = 0;
f->count = 0;
while (isspace(*cp)) ++cp;
/* optional type */
/*!re2c
"BYTE" / (ws | eol) { type = 1; goto next; }
"WORD" / (ws | eol) { type = 2; goto next; }
"LONG" / (ws | eol) { type = 4; goto next; }
"CSTRING" / (ws | eol) { type = 5; goto next; }
"PSTRING" / (ws | eol) { type = 6; goto next; }
"GSSTRING" / (ws | eol) { type = 7; goto next; }
"" { type = 0; goto next; }
*/
next:
while (isspace(*cp)) ++cp;
if (type) {
count = 0;
while(isdigit(*cp)) {
count = count * 10 + *cp - '0';
++cp;
}
if (!count) count = 1;
}
while (isspace(*cp)) ++cp;
if (*cp != 0) {
return -1;
}
f->type = type;
f->count = count;
return 1;
}
void debug_load_templates(const char *path) {
FILE *f;
char buffer[1024];
int ok;
int in_struct = 0;
struct record record;
struct field field;
unsigned line = 0;
const char *YYMARKER = NULL;
const char *YYCTXMARKER = NULL;
f = fopen(path, "r");
if (!f) {
fprintf(stderr, "Unable to load %s: %s\n", path, strerror(errno));
return;
}
for (line = 1;;++line) {
const char *start = NULL;
const char *end = NULL;
const char *cp = fgets(buffer, sizeof(buffer), f);
if (!cp) break;
rtrim(buffer);
/*!re2c
"" { goto _field; }
";" { continue; }
ws* eol { continue; }
"_END" / (ws | eol) { goto _end; }
"_START" / (ws | eol) { goto _start; }
*/
_field:
if (!in_struct) {
/* warn once */
fprintf(stderr, "%s:%d: Missing _START.\n", path, line);
memset(&record, 0, sizeof(record));
in_struct = -1;
}
if (in_struct < 0) continue;
memset(&field, 0, sizeof(field));
ok = parse_field(cp, &field);
if (ok == 0) continue;
if (ok < 1) {
/* warn but add */
fprintf(stderr, "%s:%d: Bad field line: %s\n", path, line, buffer);
}
add_field(&field);
continue;
_start:
if (in_struct) {
/* warn and close it */
if (in_struct > 0) add_record(&record);
}
memset(&record, 0, sizeof(record));
while (isspace(*cp)) ++cp;
start = cp;
for(;;) {
/*!re2c
eol | ws { --cp; break; }
* { continue; }
*/
}
end = cp;
if (start == end) {
/* warning ... */
fprintf(stderr, "%s:%d: _START missing name.\n", path, line);
in_struct = -1;
} else {
in_struct = 1;
record.name = strndup(start, end - start);
record.field_index = field_count;
}
while (isspace(*cp)) ++cp;
if (*cp != 0) {
/* warning */
fprintf(stderr, "%s:%d: Bad _START line: %s\n", path, line, buffer);
}
continue;
_end:
while (isspace(*cp)) ++cp;
if (*cp != 0) {
/* warning ... */
fprintf(stderr, "%s:%d: Bad _END line: %s\n", path, line, buffer);
}
if (in_struct) {
if (in_struct > 0) add_record(&record);
} else {
/* warning */
fprintf(stderr, "%s:%d: _END without _START.\n", path, line);
}
in_struct = 0;
memset(&record, 0, sizeof(record));
continue;
}
if (in_struct) {
/* warn & close */
fprintf(stderr, "%s:%d: Missing _END.\n", path, line);
if (in_struct > 0) add_record(&record);
}
fclose(f);
qsort(records, record_count, sizeof(struct record), record_compare);
}
static int record_search(const void *a, const void *b) {
const struct record *r = b;
return strcasecmp(a, r->name);
}
static void print_string(int type, word32 address) {
unsigned c;
unsigned length;
unsigned more = 0;
if (!address) return;
fputc('"', stdout);
switch(type) {
case 5:
length = 32;
break;
case 6:
length = get_memory_c(address, 0);
++address;
break;
case 7:
length = get_memory16_c(address, 0);
address += 2;
break;
}
if (length > 32) {
length = 32;
more = 1;
}
for (unsigned i = 0; i < length; ++i) {
c = get_memory_c(address++, 0);
if (type == 5 && c == 0) break;
if ((~c & 0x80) && isprint(c)) {
fputc(c, stdout);
} else fprintf(stdout, "\\x%02x", c);
}
if (type == 5 && c != 0) more = 1;
if (more) fputs("...", stdout);
fputc('"', stdout);
fputc(' ', stdout);
}
word32 debug_apply_template(word32 address, const char *name) {
/* 1 - lookup template */
struct record *r;
int i, j;
struct field *f;
r = bsearch(name, records, record_count, sizeof(struct record), record_search);
if (r == NULL) {
fprintf(stderr, "Invalid template: %s\n", name);
return address;
}
f = fields + r->field_index;
if (r->total_size == 0) {
/* just print the fields */
for (i = 0; i < r->field_count; ++i) {
fputs(f[i].name, stdout);
fputc('\n', stdout);
}
fputc('\n', stdout);
return address;
}
for (i = 0; i < r->field_count; ++i) {
word32 value;
unsigned type = f[i].type;
printf("%-16s", f[i].name);
for (j = 0; j < f[i].count; ++j) {
switch(type) {
case 1:
value = get_memory_c(address, 0);
address += 1;
printf("%02x ", value);
break;
case 2:
value = get_memory16_c(address, 0);
address += 2;
printf("%04x ", value);
break;
case 4:
case 5: /* cstring */
case 6: /* pstring */
case 7: /* gs/os string */
value = get_memory24_c(address, 0);
address += 4;
printf("%08x ", value);
if (type > 4) {
print_string(type, value);
}
break;
}
address &= 0xffffff;
}
fputc('\n', stdout);
}
fputc('\n', stdout);
return address;
}
struct tool {
char *name;
char *fullname;
unsigned number;
unsigned vector;
};
struct tool *tools = NULL;
int tool_count = 0;
int tool_alloc = 0;
struct tool *tool_names = NULL;
int tool_name_count = 0;
static void add_tool(struct tool *t) {
if (tool_count == tool_alloc) {
size_t size = (tool_alloc + 1024) * sizeof(struct tool);
void *tmp = realloc(tools, size);
if (!tmp) return;
tools = tmp;
tool_alloc += 1024;
}
tools[tool_count++] = *t;
}
static word32 to_hex(const char *iter, const char *end) {
word32 rv = 0;
while(iter != end) {
char c = *iter++;
rv <<= 4;
if (isdigit(c)) rv |= c - '0';
else rv |= (c | 0x20) - 'a' + 10;
}
return rv;
}
static int tool_compare(const void *a, const void *b) {
const struct tool *aa = a;
const struct tool *bb = b;
int rv = (int)aa->vector - (int)bb->vector;
if (rv == 0) rv = (int)aa->number - (int)bb->number;
return rv;
}
static int tool_name_compare(const void *a, const void *b) {
const struct tool *aa = a;
const struct tool *bb = b;
int rv = (int)aa->vector - (int)bb->vector;
if (rv == 0) rv = strcasecmp(aa->name, bb->name);
return rv;
}
/* nifty list */
/*
* format:
* fffx ... header comments
* xxxx name ; p8 mli calls
* *
* xxxx name ; p16/gsos calls
* *
* xxxx name ; tool calls
* *
* xxxx name ; user tool calls
* *
* xxxx name ; e1 vectors
* *
* xxxx name ; e0 vectors
* *
* xxxx name ; softswitch/f8 rom
* *
* xxxx name ; 01 vectors
* *
* xxxx name ; nifty list service calls
* *
* xxxx name ; resource types
* *
* xxxx name ; error codes
* *
* xxxx name ; HC IIgs callbacks
* *
* xxxx name ; request codes
* *
*
*/
void debug_load_nifty(const char *path) {
FILE *f;
char buffer[1024];
unsigned line = 0;
const char *YYMARKER = NULL;
const char *YYCTXMARKER = NULL;
int section = 0;
unsigned vector = 0;
static unsigned vectors[] = {
0xbf00, 0xe100a8, 0xe10000, 0xe10008, 0xe1, 0xe0, 0xff, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00
};
f = fopen(path, "r");
if (!f) {
fprintf(stderr, "Unable to load %s: %s\n", path, strerror(errno));
return;
}
for (line = 1;;++line) {
const char *start;
const char *end;
struct tool tool = { 0, 0, 0, vector };
const char *cp = fgets(buffer, sizeof(buffer), f);
if (!cp) break;
rtrim(buffer);
start = cp;
/*!re2c
[\r\n\x00] { continue; }
* {
fprintf(stderr, "%s:%d: Bad line: %s", path, line, buffer);
continue;
}
"*" {
++section;
vector = 0;
if (section < sizeof(vectors) / sizeof(vectors[0]))
vector = vectors[section];
continue;
}
x{4} / ws { goto ok; }
*/
ok:
end = cp;
tool.number = to_hex(start, end);
if (section == 0 && tool.number >= 0xfff0) continue;
if (!vector) continue;
while (isspace(*cp)) ++cp;
/* skip p8/p16/ prefix */
/*!re2c
"P8:" | "P16:" | "Shell:" | "GS/OS:" { goto prefix; }
"" { goto prefix; }
*/
prefix:
start = cp;
for(;;) {
/*!re2c
"" / eol { break; }
"(" | ws {
if (vector > 0x100 ) {
--cp;
break;
}
continue;
}
* { continue; }
*/
}
end = cp;
if (end > start) {
int l = end - start;
tool.fullname = NULL;
if (vector > 0x0100) {
/* add a leading _ */
tool.name = malloc(l + 2);
tool.name[0] = '_';
strncpy(tool.name + 1, start, l);
tool.name[l + 1] = 0;
tool.fullname = strdup(start);
}
else tool.name = strndup(start, l);
add_tool(&tool);
}
}
fclose(f);
qsort(tools, tool_count, sizeof(struct tool), tool_compare);
/* name index for tools and gs/os calls */
int tmp = 0;
int i;
for (i = 0; i < tool_count; ++i) {
unsigned v = tools[i].vector;
if (v == 0xe10000 || v == 0xe100a8 || v == 0xbf00)
++tmp;
}
if (!tmp) return;
tool_name_count = tmp;
tool_names = malloc(sizeof(struct tool) * tmp);
if (!tool_names) return;
tool_name_count = tmp;
tmp = 0;
for(i = 0; i < tool_count; ++i) {
unsigned v = tools[i].vector;
if (v == 0xe10000 || v == 0xe100a8 || v == 0xbf00)
tool_names[tmp++] = tools[i];
}
qsort(tool_names, tool_name_count, sizeof(struct tool), tool_name_compare);
}
const char *debug_tool_name(unsigned number, unsigned vector, unsigned full) {
if (!tool_count) return NULL;
struct tool tmp = { 0, 0, number, vector };
struct tool *t = bsearch(&tmp, tools, tool_count, sizeof(struct tool), tool_compare);
if (!t) return NULL;
if (full && t->fullname) return t->fullname;
return t->name;
}
int lookup_tool_number(const char *name, unsigned vector) {
if (!tool_name_count) return 0;
struct tool tmp = { (char *)name, 0, 0, vector};
struct tool *t = bsearch(&tmp, tool_names, tool_name_count, sizeof(struct tool), tool_name_compare);
if (!t) return 0;
return t->number;
}