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fixed error reporting

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This commit is contained in:
Igor M 2024-03-17 18:05:09 +02:00
parent 4beaee5dab
commit fe985ca781
1 changed files with 5 additions and 4 deletions
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9
src/directive.c
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@ -3,10 +3,10 @@ AsmError push_string(char *buf, char *input, size_t len) {
for (size_t pos = 0; pos < len; pos += 1) {
char chr = input[pos];
if (chr == '\\') {
pos += 1;
if (pos + 1 >= len) {
return ErrDanglingEscape;
}
pos += 1;
chr = input[pos];
size_t offset = 1;
switch (chr) {
@ -96,7 +96,7 @@ AsmError assemble_directive(char *input, size_t len, ByteVec *out, Token *tok) {
size_t pos = tok->start;
char byte0 = input[pos];
char byte1 = input[pos + 1];
if (tok->len == 0 && byte0 == 'd') {
if (tok->len == 2 && byte0 == 'd') {
size_t word_size;
switch (byte1) {
case 'b':
@ -122,7 +122,7 @@ AsmError assemble_directive(char *input, size_t len, ByteVec *out, Token *tok) {
return ErrAlignNeedsNumber;
}
size_t mask = tok->num - 1;
if ((tok->num & mask) != 0) {
if (tok->num == 0 || (tok->num & mask) != 0) {
return ErrAlignNeedsPow2;
}
if ((~(size_t)0) - mask < out->len) {
@ -134,6 +134,7 @@ AsmError assemble_directive(char *input, size_t len, ByteVec *out, Token *tok) {
}
// TODO: zero-fill?
out->len = aligned;
}
return ErrOk;
}
return ErrInvalidDirective;
}