H. Peter Anvin [Tue, 27 May 2008 02:32:52 +0000 (19:32 -0700)]
regs.pl: add comments to regflags.c and regvals.c
Add comments to regflags.c and regvals.c, to make it easier to spot
errors.
H. Peter Anvin [Tue, 27 May 2008 02:23:01 +0000 (19:23 -0700)]
Fix register numbers for ymm1-15!
ymm1-15 were incorrectly listed as starting at register number 0, with
obviously disastrous consequences...
H. Peter Anvin [Mon, 26 May 2008 19:03:55 +0000 (12:03 -0700)]
ndisasm: the high bit of is4 bytes is ignored in 32-bit mode
Mask the high bit of is4 bytes in 32-bit mode. Provide a generic
"regmask" variable that we can use for equivalent purposes as needed.
H. Peter Anvin [Mon, 26 May 2008 18:39:00 +0000 (11:39 -0700)]
macros.pl: more readable comments
H. Peter Anvin [Mon, 26 May 2008 18:21:25 +0000 (11:21 -0700)]
Add some comments to the output of macros.pl
Add some comments to the output of macros.pl, which might make it a
little bit easier to debug issues if there should be any.
H. Peter Anvin [Mon, 26 May 2008 18:14:38 +0000 (11:14 -0700)]
preproc.c: prevent the compiler from reducing enum pp_token_type
The compiler is free to store enum pp_token_type into any size integer
small enough to contain all the values up to 2^n-1 for the smallest n
which contains all the values. Force it to size it to integer size,
since we use it to hold macro positional parameters.
H. Peter Anvin [Mon, 26 May 2008 05:29:00 +0000 (22:29 -0700)]
NASM 2.03rc1
H. Peter Anvin [Mon, 26 May 2008 05:11:36 +0000 (22:11 -0700)]
CHANGES entry for %? and %??
H. Peter Anvin [Mon, 26 May 2008 05:09:17 +0000 (22:09 -0700)]
Document %? and %??
H. Peter Anvin [Mon, 26 May 2008 04:57:00 +0000 (21:57 -0700)]
Implement %? and %?? for mmacros
Same as before, but for mmacros this time
H. Peter Anvin [Mon, 26 May 2008 04:46:17 +0000 (21:46 -0700)]
Implement %? and %?? for smacros
%? - substitute the macro name as invoked
%?? - substitute the macro name as defined
In particular:
%idefine keyword $%?
... can be used to make a new keyword "disappear".
H. Peter Anvin [Mon, 26 May 2008 01:44:44 +0000 (18:44 -0700)]
phash: canonicalize order, fix handling of ignored duplicates
Canonicalize the order of the prehash entries, so we don't have to
worry about looking up both pairs of edges.
When we find a collision that we decide to ignore, there is no point
in adding the same edge into the array again; instead, just skip the
current edge.
H. Peter Anvin [Mon, 26 May 2008 01:17:49 +0000 (18:17 -0700)]
phash: allow collisions if the hash target is the same
If the hash target is the same value, we can permit collisions. This
isn't relevant for the current applications of the hash generator, but
is useful for cases where one have a number of sources for the same
target. It's easy to check, either way.
H. Peter Anvin [Mon, 26 May 2008 01:10:57 +0000 (18:10 -0700)]
phash: massively speed up the perfect hash generator
Make the perfect hash generator about 200x faster by using a very
simple custom graph adjacency representation instead of using
Graph::Undirected.
H. Peter Anvin [Sun, 25 May 2008 16:25:47 +0000 (09:25 -0700)]
Fix mnemnonics for SSE5 PCOMU instructions
H. Peter Anvin [Sun, 25 May 2008 05:15:56 +0000 (22:15 -0700)]
Fix mnemonics for VTESTP[SD] (BR 1971570)
Incorrectly entered as VPTEST* due to illogical placement in the manual.
H. Peter Anvin [Sun, 25 May 2008 05:13:33 +0000 (22:13 -0700)]
Fix the VPSHUF*W instructions (BR 1971567)
The VPSHUF*W instructions had both wrong mnemonics and opcodes.
H. Peter Anvin [Sun, 25 May 2008 05:11:44 +0000 (22:11 -0700)]
Fix typo in VPCMPESTRM instruction (BR 1971565)
The VPCMPESTRM instruction was typoed.
H. Peter Anvin [Sun, 25 May 2008 05:09:51 +0000 (22:09 -0700)]
Add VCVTSI2SS (BR 1971564)
The VCVTSI2SS instruction was missing.
H. Peter Anvin [Sun, 25 May 2008 05:07:03 +0000 (22:07 -0700)]
Fix immediate for PCLMULHQ* instructions (BR 1971555)
The immediate for the PCLMULHQ* instructions was wrong.
H. Peter Anvin [Sun, 25 May 2008 05:04:23 +0000 (22:04 -0700)]
Remove imm from specific versions of VCMPxx
For the versions of VCMPxx which already embed their condition code,
we do not want an extra immediate argument.
Todo: fix bytecode compiler to complain more about these.
H. Peter Anvin [Sun, 25 May 2008 04:58:59 +0000 (21:58 -0700)]
Add VLDQQU as an alias for 256-bit VLDDQU (BR 1971539)
Accept VLDQQU as an alias for VLDDQU when used with 256-bit values.
H. Peter Anvin [Sun, 25 May 2008 04:54:09 +0000 (21:54 -0700)]
VFMSUBADDP[SD], not VFMADDSUBS[SD] (BR 1971573)
There are VFMSUBADDP instructions, but there are no VFMADDSUBS
instructions.
H. Peter Anvin [Sat, 24 May 2008 04:51:21 +0000 (21:51 -0700)]
Add note about SEH support
Still need documentation from someone who actually knows anything
about how this works.
Andy Polyakov [Sat, 24 May 2008 02:45:39 +0000 (19:45 -0700)]
Win64: IMAGEREL references (SEH support for Win64)
Guess what, SEH again, but in Win64 context, which is completely
different matter from Win32. At lowest level this one boils down to
putting so called imagerel references, or in practical terms
relocations of type ADDR32NB, 0x0003, into .pdata and .xdata
segments. Two possibilities. 1. implement say 'wrt ..imagerel' or 'wrt
..imagebase'. 2. silently enforce ADDR32NB relocations in .pdata and
.xdata segments.
H. Peter Anvin [Sat, 24 May 2008 01:38:51 +0000 (18:38 -0700)]
Make SAFESEH syntax error ERR_NONFATAL
Incorrect use of SAFESEH is more suited for ERR_NONFATAL than ERR_FATAL
Andy Polyakov [Sat, 24 May 2008 01:37:52 +0000 (18:37 -0700)]
Support for Win32 safeseh (BR 195417)
This is basically not a bug report, but a feature request.
It's desired to be able to link .obj modules compiled with 'nasm -f
win32' with Microsoft 'link /safeseh'. As well as to register symbols
(commonly subroutine's entry points or even external symbols) as "safe
handlers." In order to achieve this, several points are required.
First of all, object module has to have absolute symbol named @feat.00
with value of 1. This can actually be achived by adding 'absolute 1'
and '@feat.00:' to source code, but it's desirable that it's
autogenerated for win32 modules.
Handler registration is essentially symbol's *index* in current
module's symbol table in .sxdata, segment with 0x200 segment flags, an
"info" segment. It's also essential that symbol has type 0x20 (see
below). All this is depicted in following framgents of 'objdump -xD'
output:
Sections:
Idx Name Size VMA LMA File off Algn
0 .sxdata
00000004 00000000 00000000 0000003c 2**2
CONTENTS, READONLY, DEBUGGING
SYMBOL TABLE:
...
[ 5](sec -1)(fl 0x00)(ty 0)(scl 3) (nx 0) 0x00000001 @feat.00
[ 6](sec 0)(fl 0x00)(ty 20)(scl 2) (nx 0) 0x00000000 _handler
...
<.sxdata>
0: 06 00 00 00
Note [6] and (ty 20) in _handle line in SYMBOL TABLE. "06 00 00 00" in
.sxdata is little-endian 6, _handler's index. This is what makes up
"registration." It's impossible to achieve this with current nasm
facilities and it's probably appropriate to introduce a directive for
it, 'safeseh _handler' is probably most natural choice.
H. Peter Anvin [Sat, 24 May 2008 01:24:03 +0000 (18:24 -0700)]
doc: another reference to DY
H. Peter Anvin [Sat, 24 May 2008 01:03:26 +0000 (18:03 -0700)]
CHANGES since 2.02, so far...
H. Peter Anvin [Sat, 24 May 2008 00:58:01 +0000 (17:58 -0700)]
Document DY, RESY and YWORD
H. Peter Anvin [Sat, 24 May 2008 00:46:08 +0000 (17:46 -0700)]
AVX FMA: Instruction table for the AVX FMA instructions
This adds the AVX FMA instructions to the instruction table, which
should complete the AVX work.
H. Peter Anvin [Sat, 24 May 2008 00:27:15 +0000 (17:27 -0700)]
AVX: Remaining AVX instructions (still need FMA)
Implement the remaining set of AVX instructions
H. Peter Anvin [Sat, 24 May 2008 00:25:54 +0000 (17:25 -0700)]
insns.pl: better error messages, handle no-operand instructions better
Better error messages, and allow "void" instructions to omit the
operand colon.
H. Peter Anvin [Sat, 24 May 2008 00:03:30 +0000 (17:03 -0700)]
AVX instruction table through "P"
AVX instruction table through the letter P in the manual
H. Peter Anvin [Fri, 23 May 2008 23:59:59 +0000 (16:59 -0700)]
fmtinsns.pl: handle compiler fields; do some case mangling
Handle compiler-generated fields, and at least try to do some case
mangling.
H. Peter Anvin [Thu, 22 May 2008 20:17:51 +0000 (13:17 -0700)]
Use hash tables even for context-sensitive macros
Normally, contexts aren't used with a large number of macros, but in
case someone does, do use hash tables for those as well. This
simplifies the code somewhat, since *all* handling of macros is now
done via hash tables.
Future note: consider if it wouldn't be better to allow struct
hash_table to be allocated by the caller, instead of being allocated
by the hash table routine.
H. Peter Anvin [Thu, 22 May 2008 18:24:35 +0000 (11:24 -0700)]
Add tokens vex.ww and vex.wx; vex.wx is the default
Add vex.ww (for VEX.W follows REX.W) and vex.wx (for VEX.W is a don't
care); vex.wx is the default since that seems to match existing usage
better.
H. Peter Anvin [Thu, 22 May 2008 06:21:57 +0000 (23:21 -0700)]
AVX: instruction table up to PE
Complete the instruction table up to and including PE (document
319433-002, start next on page 5-330).
H. Peter Anvin [Thu, 22 May 2008 01:10:09 +0000 (18:10 -0700)]
AVX: instruction table through M
Implement the AVX instruction table through the letter M.
H. Peter Anvin [Thu, 22 May 2008 01:09:17 +0000 (18:09 -0700)]
insns.pl: error if we have a 'v' operand and no vex.nds/ndd
Although redundant, the presence of a 'v' operand should match the
existence of a nds or ndd flag on vex; this should help catch typos.
H. Peter Anvin [Wed, 21 May 2008 22:09:31 +0000 (15:09 -0700)]
insnsn.c: cleaner to *not* separate out conditional instructions
The disassembler code gets cleaner if we do *not* separate out the
conditional instructions; instead, rely on the fact that the
conditionals are always at the end and use FIRST_COND_OPCODE as a
barrier.
H. Peter Anvin [Wed, 21 May 2008 22:03:26 +0000 (15:03 -0700)]
Add legacy blendvpd to avx.asm, as a disassembler test.
H. Peter Anvin [Wed, 21 May 2008 22:02:30 +0000 (15:02 -0700)]
Implement aliases for specific SSE5 compare operations
Implement aliases for specific SSE5 compare operations, per BR 1930630.
H. Peter Anvin [Wed, 21 May 2008 21:45:46 +0000 (14:45 -0700)]
insns.dat: reimplement SSE5 compares using the bytecode compiler
Use the bytecode compiler for the SSE5 compare instructions. While we
are at it, give it correct flags.
H. Peter Anvin [Wed, 21 May 2008 21:44:42 +0000 (14:44 -0700)]
insns.pl: match AMD documentation for DREX syntax
Adjust the compiler to give a syntax for DREX instructions that
matches the AMD documentation.
H. Peter Anvin [Wed, 21 May 2008 21:28:42 +0000 (14:28 -0700)]
Add the PCLMUL instructions (BR 1933742)
Add the PCLMUL group instructions, from the AVX spec but not actually
AVX instructions.
H. Peter Anvin [Wed, 21 May 2008 21:17:33 +0000 (14:17 -0700)]
Add INVEPT and INVVPID (BR 1956955)
H. Peter Anvin [Wed, 21 May 2008 21:16:49 +0000 (14:16 -0700)]
Use "o64nw" instead of "o64i" for o64 without REX.W
Use the somewhat more mnemonic "o64nw" for 64-bit operand size sans
REX.W.
H. Peter Anvin [Wed, 21 May 2008 21:03:56 +0000 (14:03 -0700)]
Add the MOVBE instructions (BR 1956954)
Add the MOVBE instructions (load/store and swap)
H. Peter Anvin [Wed, 21 May 2008 18:18:12 +0000 (11:18 -0700)]
insns.pl: readabilty improvements for isnsnd.c
Make insnsd.c a bit more consistent in style.
H. Peter Anvin [Wed, 21 May 2008 18:05:39 +0000 (11:05 -0700)]
Disassembler: select table based on VEX prefixes
We can use the new VEX prefixes to select into a large table of new
opcode spaces. Since the table is (currently) sparse, add logic so we
don't end up producing tons of empty tables for no good reason.
This is also necessary since VEX is likely to reuse opcode bytes that
would appear as prefixes at some point, which would cause conflicts
with the regular tables.
H. Peter Anvin [Wed, 21 May 2008 17:34:33 +0000 (10:34 -0700)]
Fix skipping 0270 code when searching for disasm prefixes
The 0270 code was incorrectly entered as 270 (decimal), which meant
that instructions with vex but no .nds got misfiled in the improper
opcode tables.
H. Peter Anvin [Wed, 21 May 2008 17:33:19 +0000 (10:33 -0700)]
Fix display for fixed xmm0/ymm0, SSE redundant prefixes
All singleton registers need to be displayable from register flags
alone!
When using the new 0360..0363 codes, make sure we appropriate avoid
displaying the legacy use of the prefixes.
Philipp Thomas [Wed, 21 May 2008 15:53:21 +0000 (08:53 -0700)]
Fix buffer overflow in preproc.c (BR 1942146)
Fix buffer overflow in preproc.c due to an incorrect test. In the
code:
for (r = p, s = ourcopy; *r; r++) {
if (r >= p+MAX_KEYWORD)
return tokval->t_type = TOKEN_ID; /* Not a keyword */
*s++ = tolower(*r);
}
*s = '\0';
... the test really needs to be >= since for the pass where there are
equal:
a) a nonzero byte means we have > MAX_KEYWORD characters, and
b) s = ourcopy+MAX_KEYWORD; but if the test doesn't trigger,
we can write one more character *plus* the null byte, overflowing
ourcopy.
H. Peter Anvin [Wed, 21 May 2008 15:45:17 +0000 (08:45 -0700)]
insns typo fix: SSE5 FNM* instructions misspelled
The SSE5 FNM* instructions were misspelled as FMN*
(Bug 1930322)
H. Peter Anvin [Wed, 21 May 2008 15:42:55 +0000 (08:42 -0700)]
Merge branch 'master' of git+ssh://repo.or.cz/srv/git/nasm
H. Peter Anvin [Wed, 21 May 2008 15:41:58 +0000 (08:41 -0700)]
UDx instructions are 186+, not 286+
The UDx instructions are valid as far back as the #UD trap, which is
the 186, not the 286.
H. Peter Anvin [Wed, 21 May 2008 06:36:36 +0000 (23:36 -0700)]
VEX prefixes apply to VEX instructions only...
H. Peter Anvin [Wed, 21 May 2008 06:28:46 +0000 (23:28 -0700)]
AVX instructions up to VMINSS
H. Peter Anvin [Wed, 21 May 2008 06:16:27 +0000 (23:16 -0700)]
A few more AVX instructions (up to VLDMXCSR)
More AVX instructions, up to VLDMXCSR
H. Peter Anvin [Wed, 21 May 2008 02:29:04 +0000 (19:29 -0700)]
Handle is4 bytes without meaningful information in the bottom bits
Support is4 bytes without meaningful information in the bottom bits.
This is equivalent to /is4=0 for the assembler, but makes the bottom
bits don't care for the disassembler.
H. Peter Anvin [Wed, 21 May 2008 01:33:40 +0000 (18:33 -0700)]
inslist.pl: deal with the new encoding format
Make it possible for inslist.pl to understand the new encoding format;
fix a few minor buglets.
H. Peter Anvin [Wed, 21 May 2008 01:21:11 +0000 (18:21 -0700)]
Officially specify - as the symbol for an implicit operand
Use - to denote that an operand is implicit (not encoded). This
*better* be a fixed operand!
H. Peter Anvin [Wed, 21 May 2008 01:14:30 +0000 (18:14 -0700)]
AVX: implement all the convert instructions...
Make our way through the AVX instructions: conversions.
This is all I have time for now... hopefully this can service as a
generous source of examples.
H. Peter Anvin [Wed, 21 May 2008 00:14:17 +0000 (17:14 -0700)]
Accept the gas mnemonics "ud2a" and "ud2b"; fix ud0
Accept the gas mnemonics "ud2a" and "ud2b" for the instructions we
call ud2 and ud1 respectively, and Intel call ud2 and undocumented :)
Also, 0F FF is ud0 regardless of prefixes, at least as far as we know.
H. Peter Anvin [Wed, 21 May 2008 00:07:57 +0000 (17:07 -0700)]
ndisasm: simple compare for conditional opcodes, no loop
We had a completely unnecessary loop to test for conditional opcodes.
Since we always put the conditional opcodes at the end, we might as
well just remember where that list starts and compare against it.
H. Peter Anvin [Tue, 20 May 2008 23:59:17 +0000 (16:59 -0700)]
Finish the VCMP series...
H. Peter Anvin [Tue, 20 May 2008 23:48:34 +0000 (16:48 -0700)]
More AVX instructions
Add additional AVX instructions to the list.
H. Peter Anvin [Tue, 20 May 2008 23:47:42 +0000 (16:47 -0700)]
Make the syntax for immediates match the docs better
Use a more manual-like syntax for immediates (we still may have to use
extended syntax, but not always.)
H. Peter Anvin [Tue, 20 May 2008 23:47:12 +0000 (16:47 -0700)]
Add support for ymm0 in instructions
Make it possible to use ymm0 as a fixed operand in instructions
H. Peter Anvin [Tue, 20 May 2008 23:46:36 +0000 (16:46 -0700)]
phash: cut random vector set down a bit
Reduce the size of the random vector set somewhat
H. Peter Anvin [Tue, 20 May 2008 21:49:32 +0000 (14:49 -0700)]
No 32-byte floating point format: fix error for DY
Output a more legible error message for floating-point with "DY".
H. Peter Anvin [Tue, 20 May 2008 21:42:53 +0000 (14:42 -0700)]
openwcom.mak: wmake uses & for continuation, not \ (sigh)
wmake uses & for continuation, since \ is used for pathname
separators.
H. Peter Anvin [Tue, 20 May 2008 21:38:21 +0000 (14:38 -0700)]
Readability improvements for regdis.c
H. Peter Anvin [Tue, 20 May 2008 21:35:34 +0000 (14:35 -0700)]
netware.mak: correct dependencies
The Makefile uses VPATH and stripped directory names for files, so
generate the dependencies accordingly.
H. Peter Anvin [Tue, 20 May 2008 21:25:36 +0000 (14:25 -0700)]
rdx: Add cast avoid warning from gcc
Avoid a warning from gcc about casting an integer of different size to
a pointer.
H. Peter Anvin [Tue, 20 May 2008 21:21:29 +0000 (14:21 -0700)]
Avoid #including .c files; instead compile as separate units
Don't #include .c files, even if they are auto-generated; instead
compile them as separate compilation units and let the linker do its
job.
H. Peter Anvin [Tue, 20 May 2008 20:07:09 +0000 (13:07 -0700)]
PTEST is SSE4.1; although AMD says it's SSE5.
Fix this when we have proper support for feature sets, or forget about
the concept entirely.
H. Peter Anvin [Tue, 20 May 2008 20:03:39 +0000 (13:03 -0700)]
insns.pl: don't require whitespace before / or \
Use Perl's context-sensitive regular expressions to tell split that a
slash or backslash begins a new operator.
H. Peter Anvin [Tue, 20 May 2008 18:47:01 +0000 (11:47 -0700)]
nasm.h: remove obsolete IP_REG definitions
H. Peter Anvin [Tue, 20 May 2008 18:43:53 +0000 (11:43 -0700)]
Add DY, YWORD, and the SY instruction flag
Add the DY instruction, YWORD keyword, and an SY marker for
instruction sizes. Add a few more AVX sample instructions.
H. Peter Anvin [Tue, 20 May 2008 18:23:18 +0000 (11:23 -0700)]
insns.pl: support operands that serve double duty
Sometimes assembly syntax wants to permit a single operand to serve
multiple functions; allow this.
The disassembler could really use to be smarter about those.
H. Peter Anvin [Tue, 20 May 2008 18:05:59 +0000 (11:05 -0700)]
insns.dat: no subheader for "must be last"
H. Peter Anvin [Tue, 20 May 2008 18:04:26 +0000 (11:04 -0700)]
insns.dat: make even wider to make space for AVX
The AVX instructions take more space, so add a few tab stops across
the entire file.
H. Peter Anvin [Tue, 20 May 2008 18:01:28 +0000 (11:01 -0700)]
insns.dat: use compiler-generated bytecodes for AVX
Use compiler-generated bytecodes for the AVX instruction demos. This
should make it a lot easier for other people (HINT, HINT) to add the
instruction table.
H. Peter Anvin [Tue, 20 May 2008 17:48:22 +0000 (10:48 -0700)]
insns.pl: fix regex subgroup of /is4= codes
The argument is now $1, not $2...
H. Peter Anvin [Tue, 20 May 2008 17:39:15 +0000 (10:39 -0700)]
insns.pl: fix splitting of bracketted operations
H. Peter Anvin [Tue, 20 May 2008 17:29:11 +0000 (10:29 -0700)]
Opcode listing notation is /is4, consistently
H. Peter Anvin [Tue, 20 May 2008 17:21:57 +0000 (10:21 -0700)]
Use the \360..\363 annotations for SSE prefixes
H. Peter Anvin [Tue, 20 May 2008 16:46:24 +0000 (09:46 -0700)]
Same some space by introducing shorthand byte codes for SSE prefixes
Properly done, all SSE instructions which has the 66/F2/F3 opcode
multiplex need two prefixes: one to control the use of OSP and one to
control the use of REP. However, it's a four-way select: np/66/F2/F3;
so introduce shorthand bytecodes for that purpose.
H. Peter Anvin [Tue, 20 May 2008 16:36:41 +0000 (09:36 -0700)]
Allow explicit immediate syntax for imz2 as well as is4
imz2 is just an alias for is4 as far as we are concerned...
H. Peter Anvin [Tue, 20 May 2008 04:10:14 +0000 (21:10 -0700)]
insns.pl: escape literal special character in regex
In Perl code, it is good practice to escape special characters
intended to be literal.
H. Peter Anvin [Tue, 20 May 2008 04:07:08 +0000 (21:07 -0700)]
Bytecode compiler: add support for is4/imz2 operands
H. Peter Anvin [Tue, 20 May 2008 02:08:03 +0000 (19:08 -0700)]
More work on bytecode compiler (not finished yet...)
More work on the bytecode compiler. Not all useful bytecodes are
implemented yet, however.
H. Peter Anvin [Tue, 20 May 2008 01:19:42 +0000 (18:19 -0700)]
insns.pl: first steps toward a "smart" bytecode compiler
First steps toward a smart(er) bytecode compiler, using a syntax that
can be more directly taken from the manuals.
H. Peter Anvin [Tue, 13 May 2008 21:29:47 +0000 (14:29 -0700)]
Make insnsb.c an actual compilation unit
"make alldeps" doesn't really like it when included files end in *.c.
Instead of renaming insnsb.c to insnsb.h, make it an actual
compilation unit, since there really isn't any reason for it not to
be.
H. Peter Anvin [Mon, 12 May 2008 22:28:33 +0000 (15:28 -0700)]
insnsb.c: use 5 digits for index, not 4
We already have indexes up to 9500, so use 5 digits instead of 4.
H. Peter Anvin [Mon, 12 May 2008 18:36:24 +0000 (11:36 -0700)]
Make MAX_OPERANDS a parameter in insns.pl as well
MAX_OPERANDS is present in insns.pl as well (although proper C
compilers shouldn't need this kind of zero padding.) Make sure it's
clear to everyone.
H. Peter Anvin [Mon, 12 May 2008 18:13:41 +0000 (11:13 -0700)]
Remove special hacks to avoid zero bytecodes
We can now have zero bytecodes with impunity, so remove any special
hacks we had to avoid zeroes in the bytecode.
H. Peter Anvin [Mon, 12 May 2008 18:00:50 +0000 (11:00 -0700)]
Generate a byte array instead of using strings for the byte codes
Generate a byte array instead of using C compiler strings for the byte
codes. This has a few advantages:
- No need to special-case zero due to broken C compilers.
- Only insns.pl only ever reads the string, so we can invent our own
syntax.
- Compaction.
- We can give it the proper, unsigned type.