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fix heap corruption on LP64 platforms #90

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fix heap corruption on LP64 platforms #90

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7 changes: 4 additions & 3 deletions src/jtag2rw.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -151,11 +151,12 @@ uchar *jtag2::jtagRead(unsigned long addr, unsigned int numBytes)
unsigned int chunksize = numBytes;
unsigned int targetOffset = 0;

if (addr + chunksize >= pageAddr + pageSize)
offset = addr & mask;
if (chunksize > pageSize - offset) {
// Chunk would cross a page boundary, reduce it
// appropriately.
chunksize -= (addr + numBytes - (pageAddr + pageSize));
offset = addr - pageAddr;
chunksize = pageSize - offset;
}

while (numBytes > 0)
{
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7 changes: 4 additions & 3 deletions src/jtag3rw.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -150,11 +150,12 @@ uchar *jtag3::jtagRead(unsigned long addr, unsigned int numBytes)
unsigned int chunksize = numBytes;
unsigned int targetOffset = 0;

if (addr + numBytes >= pageAddr + pageSize)
offset = addr & mask;
if (chunksize > pageSize - offset) {
// Chunk would cross a page boundary, reduce it
// appropriately.
chunksize -= (addr + numBytes - (pageAddr + pageSize));
offset = addr - pageAddr;
chunksize = pageSize - offset;
}

while (numBytes > 0)
{
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