This adds a "default" directive that takes either "rel" or "abs". This
sets whether the default mode for simple displacements is RIP-relative (rel)
or not (abs). The default without a directive is "abs".
Also added is corresponding "rel" and "abs" effective address modifiers
to override whatever default is set:
[rel label] is RIP-relative
[abs label] is not.
In default rel mode, [label] defaults to the former, in default abs mode,
the latter. Also, segment overrides (note difference from NASM below) are
abs regardless of mode, unless explicitly overridden with rel:
[fs:label] is always abs
[rel fs:label] is always rel
However, we have a number of differences from NASM in this handling due to
what I feel to be yasm's more sane handling of [dword ...] and [qword ...].
In yasm, these set the displacement size, rather than the address size; the
latter is set using a a32/a64 prefix. I feel this is more sane as in 64-bit
mode the two can be different in the MovOffs (A0/A1 mov *ax) case.
Also, yasm disables default-rel mode if any segment register is used, not
just FS or GS as NASM currently does.
See modules/arch/x86/tests/riprel1.asm and
modules/arch/x86/tests/riprel2.asm for examples, as well as my recent
posting to the nasm-devel mailing list on SF.
svn path=/trunk/yasm/; revision=1963
Reported by: Loren Merritt
Fix by: mu@
We already had a testcase for this, but it had an incorrect "golden" result.
svn path=/trunk/yasm/; revision=1952
Users who build out of SVN will need to install Python, but this is painless even for
Windows users
(go to http://www.python.org/download/ and download and install the appropriate MSI)
Delete generated files from SVN; these are massive and annoying to keep updated
(massive diffs).
svn path=/trunk/yasm/; revision=1944
systems, by combining operand lists into a single array (and trying to find
overlaps where possible). This saves about 4K even on a 32-bit system.
Also shrink the generated gperf code by outputting the number of info
structures directly rather than using NELEMS().
svn path=/trunk/yasm/; revision=1943
standard output. This makes for better error handling behavior with make
(redirecting the standard output could leave empty files behind on error).
svn path=/trunk/yasm/; revision=1939
While I prefer not to have generated files in the source repository,
do this for now in the interest of sanity on the Windows side (to allow
building directly from a SVN checkout).
An alternative might be to require Python on Windows when building from
SVN. If at some point we decide to go that route, it will be easy enough
to remove these files and add the necessary bits to Mkfiles/vc and
Mkfiles/vc8.
svn path=/trunk/yasm/; revision=1938
This combines the C and perfect hash tables into a single source file,
and allows for easier future changes to the source-level structures.
The Python-built files are included in the distribution so that Python
is not added as a dependency.
The generated code has been verified equal against the old tables,
excepting a number of bugfixes.
Most of the bugs fixed are in the CPU field, plus a few GAS suffix fixes.
svn path=/trunk/yasm/; revision=1937
* modules.vcproj: Add x86cpu.c, x86regtmod.c, and lc3b arch files to fix build.
* x85geninsn.c: Clean up a couple of unused variables.
* genperf.c: Use sprintf instead of snprintf; convert filename backslashes to slashes.
svn path=/trunk/yasm/; revision=1932
instruction handling.
Use the GNU gperf file format, but continue to use our custom minimal
perfect hash generator.
svn path=/trunk/yasm/; revision=1929
