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Add forgotten crtstart.asm

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logicog
2025-09-26 06:51:29 +02:00
parent c636ef3b8f
commit 8aaca9ae10
4 changed files with 365 additions and 28 deletions
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installer/updatebuilder.c
+73 -17
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@@ -27,6 +27,7 @@
uint8_t buffer[BUFFER_SIZE];
FILE *inptr;
int outptr;
char line[256];
const char *argp_program_version = "updatebuilder 0.1";
const char *argp_program_bug_address = "<git@logicog.de>";
@@ -49,6 +50,32 @@ struct arguments {
};
int get_byte(int pos)
{
int c1 = line[pos];
if (c1 >= '0' && c1 <= '9')
c1 -= '0';
else if (c1 >= 'a' && c1 <= 'f')
c1 = c1 - 'a' + 10;
else if (c1 >= 'A' && c1 <= 'F')
c1 = c1 - 'A' + 10;
else
return -1;
int c2 = line[pos + 1];
if (c2 >= '0' && c2 <= '9')
c2 -= '0';
else if (c2 >= 'a' && c2 <= 'f')
c2 = c2 - 'a' + 10;
else if (c2 >= 'A' && c2 <= 'F')
c2 = c2 - 'A' + 10;
else
return -1;
return c1 << 4 | c2;
}
static error_t parse_opt(int key, char *arg, struct argp_state *state)
{
struct arguments *arguments = state->input;
@@ -110,7 +137,7 @@ int main(int argc, char **argv)
printf("File too large.\n");
return 5;
}
size_t bytes_read = fread(buffer + SEG_1d000_OFFSET + HEADER_LENGTH, 1, sizeof(buffer), inptr);
size_t bytes_read = fread(buffer + SEG_1d000_OFFSET + 2 * HEADER_LENGTH, 1, sizeof(buffer), inptr);
printf("Bytes read: %ld\n", bytes_read);
@@ -119,31 +146,60 @@ int main(int argc, char **argv)
return 5;
}
fclose(inptr);
filesize += SEG_1d000_OFFSET + HEADER_LENGTH;
filesize += SEG_1d000_OFFSET + 2 * HEADER_LENGTH;
// Read the installer file, which is in Intel Hex format
if (arguments.installer_file) {
inptr = fopen(arguments.installer_file, "rb");
if (inptr == NULL) {
printf("Cannot open installer file %s\n", arguments.installer_file);
return 5;
}
fseek(inptr, 0L, SEEK_END);
size_t isize = ftell(inptr);
rewind(inptr);
printf("Installer file size: %ld\n", isize);
if (isize > SEG_01002_LENGTH) {
printf("File too large.\n");
return 5;
int line_num = 1;
int address_high = 0;
bool eof = false;
while(fgets(line, 255, inptr)) {
if (line[0] != ':') {
printf("Unknwon installer file format for %s\n", arguments.installer_file);
return 5;
}
int bytes = get_byte(1);
if (bytes < 0 || bytes > 200) {
printf("Error in %s, line %d, incorrect byte number\n", arguments.installer_file, line_num);
return 5;
}
int address = (get_byte(3) *256) + get_byte(5);
if (address < 0) {
printf("Error in %s, line %d, not an address\n", arguments.installer_file, line_num);
return 5;
}
int type = get_byte(7);
if (type < 0 || type > 5) {
printf("Error in %s, line %d incorrect type\n", arguments.installer_file, line_num);
return 5;
}
if (type == 0) {
for (int i = 0; i < bytes; i++) {
int data = get_byte(9 + 2 * i);
if (data < 0) {
printf("Error in %s, line %d, illegal data byte\n", arguments.installer_file, line_num);
return 5;
} else {
address = address > 0x1000 ? address - 0x1000 : address;
buffer[address + HEADER_LENGTH + i] = data;
}
}
} else if (type == 1) {
eof = true;
printf("EOF\n");
} else {
printf("UNKNOWN type, line %d\n", line_num);
}
line_num++;
}
size_t bytes_read = fread(buffer + HEADER_LENGTH, 1, sizeof(buffer), inptr);
if (!eof)
printf("Something was wrong: EOF not found\n");
printf("Bytes read: %ld\n", bytes_read);
if (bytes_read != isize) {
printf("Error reading input file.\n");
return 5;
}
fclose(inptr);
}