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src: minor cleanups

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This commit is contained in:
Markus F.X.J. Oberhumer
2023-08-11 13:32:53 +02:00
parent 777d4f5279
commit 10e759f1f1
8 changed files with 50 additions and 35 deletions
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src/packhead.cpp
+10 -5
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@@ -36,23 +36,28 @@
// least to detect older versions, so this is a little bit messy.
**************************************************************************/
PackHeader::PackHeader() noexcept : version(-1), format(-1) {}
PackHeader::PackHeader() noexcept { reset(); }
void PackHeader::reset() noexcept {
mem_clear(this);
version = -1;
format = -1;
compress_result.reset();
}
/*************************************************************************
// very simple checksum for the header itself (since version 10)
// extremely simple checksum for the header itself (since version 10)
**************************************************************************/
static byte get_packheader_checksum(SPAN_S(const byte) buf, int blen) {
assert(blen >= 4);
assert(get_le32(buf) == UPX_MAGIC_LE32);
// printf("1 %d\n", blen);
buf += 4;
blen -= 4;
unsigned c = 0;
while (blen-- > 0)
c += *buf++;
c %= 251;
// printf("2 %d\n", c);
return (byte) c;
}
@@ -98,7 +103,7 @@ void PackHeader::putPackHeader(SPAN_S(byte) p) const {
// sufficient space for the header.
assert(get_le32(p) == UPX_MAGIC_LE32);
if (get_le32(p + 4) != UPX_MAGIC2_LE32) {
// fprintf(stderr, "MAGIC2_LE32: %x %x\n", get_le32(p+4), UPX_MAGIC2_LE32);
NO_fprintf(stderr, "MAGIC2_LE32: %x %x\n", get_le32(p + 4), UPX_MAGIC2_LE32);
throwBadLoader();
}