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Added new field PackHeader::overlap_overhead.

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committer: mfx <mfx> 978190533 +0000
This commit is contained in:
Markus F.X.J. Oberhumer
2000-12-30 15:35:33 +00:00
parent 85bebf0b43
commit a8177201ef
21 changed files with 139 additions and 114 deletions
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src/p_sys.cpp
+4 -4
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@@ -65,7 +65,7 @@ bool PackSys::canPack()
void PackSys::patchLoader(OutputFile *fo,
upx_byte *loader, int lsize,
unsigned calls, unsigned overlapoh)
unsigned calls)
{
const int filter_id = ph.filter;
const int e_len = getLoaderSectionStart("SYSCUTPO");
@@ -73,13 +73,13 @@ void PackSys::patchLoader(OutputFile *fo,
assert(e_len > 0 && e_len < 256);
assert(d_len > 0 && d_len < 256);
if (ph.u_len + d_len + overlapoh > 0xfffe)
if (ph.u_len + d_len + ph.overlap_overhead > 0xfffe)
throwNotCompressible();
memcpy(loader,ibuf,6); // copy from orig. header
memcpy(loader+8,ibuf+8,2); // opendos wants this word too
unsigned copy_to = ph.u_len + d_len + overlapoh;
unsigned copy_to = ph.u_len + d_len + ph.overlap_overhead;
patch_le16(loader,lsize,"JO",get_le16(ibuf+6)-copy_to-1);
if (filter_id)
@@ -90,7 +90,7 @@ void PackSys::patchLoader(OutputFile *fo,
patchPackHeader(loader,e_len);
const unsigned jmp_pos = find_le16(loader,e_len,get_le16("JM"));
patch_le16(loader,e_len,"JM",ph.u_len+overlapoh+2-jmp_pos-2);
patch_le16(loader,e_len,"JM",ph.u_len+ph.overlap_overhead+2-jmp_pos-2);
loader[getLoaderSection("SYSSUBSI") - 1] = (upx_byte) -e_len;
patch_le16(loader,e_len,"DI",copy_to);
patch_le16(loader,e_len,"SI",ph.c_len+e_len+d_len-1);