On Wed, 2017-04-12 at 18:28 +0200, Borislav Petkov wrote:
> On Tue, Mar 07, 2017 at 04:32:38PM -0800, Ricardo Neri wrote:
> > The function insn_get_reg_offset takes as argument an enumeration that
>
> Please end function names with parentheses.
Will do!
>
> And do you mean get_reg_offset(),
On Tue, Apr 25, 2017 at 07:04:20PM -0700, Ricardo Neri wrote:
> For the specific case of ModRM.mod being 0, I feel I need to clarify
> that REX.B is not decoded and if SIB.base is %r13 the base is also 0.
Well, that all doesn't matter. The rule is this:
ModRM.mod == 00b and ModRM.r/m == 101b ->
On Tue, 2017-04-18 at 11:42 +0200, Borislav Petkov wrote:
> On Tue, Mar 07, 2017 at 04:32:39PM -0800, Ricardo Neri wrote:
> > When computing a linear address and segmentation is used, we need to know
> > the base address of the segment involved in the computation. In most of
> > the cases, the
On Thu, 2017-04-20 at 10:25 +0200, Borislav Petkov wrote:
> On Tue, Mar 07, 2017 at 04:32:41PM -0800, Ricardo Neri wrote:
> > With segmentation, the base address of the segment descriptor is needed
> > to compute a linear address. The segment descriptor used in the address
> > computation depends
On Wed, 2017-04-26 at 13:44 -0700, Ricardo Neri wrote:
> >
> > > +*/
> > > + for (i = 0; i < insn->prefixes.nbytes; i++) {
> > > + switch (insn->prefixes.bytes[i]) {
> > > + case SEG_CS:
> > > + return SEG_CS;
> > > + case SEG_SS:
> > > +
On Wed, 2017-04-19 at 12:26 +0200, Borislav Petkov wrote:
> On Tue, Mar 07, 2017 at 04:32:40PM -0800, Ricardo Neri wrote:
> > The segment descriptor contains information that is relevant to how linear
> > address need to be computed. It contains the default size of addresses as
> > well as the
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On Thu, 2017-04-20 at 10:25 +0200, Borislav Petkov wrote:
> > + * insn_get_seg_base() - Obtain base address contained in
> descriptor
> > + * @regs:Set of registers containing the segment selector
> > + * @insn:Instruction structure with selector override prefixes
> > + * @regoff: Operand
On Fri, 2017-04-21 at 12:52 +0200, Borislav Petkov wrote:
> On Tue, Mar 07, 2017 at 04:32:43PM -0800, Ricardo Neri wrote:
> > Section 2.2.1.3 of the Intel 64 and IA-32 Architectures Software
> > Developer's Manual volume 2A states that when the mod part of the ModRM
> > byte is zero and R/EBP is
On Thu, 2017-04-20 at 15:06 +0200, Borislav Petkov wrote:
> On Tue, Mar 07, 2017 at 04:32:42PM -0800, Ricardo Neri wrote:
> > These functions read the default values of the address and operand sizes
> > as specified in the segment descriptor. This information is determined
> > from the D and L
On Tue, 2017-04-25 at 15:51 +0200, Borislav Petkov wrote:
> On Tue, Mar 07, 2017 at 04:32:45PM -0800, Ricardo Neri wrote:
> > The 32-bit and 64-bit address encodings are identical. This means that we
> > can use the same function in both cases. In order to reuse the function for
> > 32-bit address
On Fri, 2017-04-21 at 16:55 +0200, Borislav Petkov wrote:
> On Tue, Mar 07, 2017 at 04:32:44PM -0800, Ricardo Neri wrote:
> > insn_get_addr_ref returns the effective address as defined by the
>
> Please end function names with parentheses.
Will do.
>
> > section 3.7.5.1 Vol 1 of the Intel 64
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