Re: [Qemu-devel] Possible invalid emulation of rex.W-prefixed far jump

2010-03-03 Thread malc
3On Mon, 1 Mar 2010, Brad Spengler wrote: > Hi all, > > I'm writing to report a possible bug in the qemu emulation of > rex.W-prefixed far jumps. It affects far jumps of this type with both > rip-relative and absolute addresses. Looks like it's a bug indeed, here's a test case: .data

[Qemu-devel] Possible invalid emulation of rex.W-prefixed far jump

2010-03-02 Thread Brad Spengler
Hi all, I'm writing to report a possible bug in the qemu emulation of rex.W-prefixed far jumps. It affects far jumps of this type with both rip-relative and absolute addresses. The yasm syntax for these instructions: jmp far qword [addr] jmp far qword [addr wrt rip] and the resulting disassem