Thus if someone need to rework this code he won't need
to jump between files trying to figure out where enum
and opcodes lay.
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Add general support in the function parser for "integer functions"
(actually implemented as special unary operators, then wrapped in
macros) and implement a family of integer logarithms. The only
difference is the behavior on a non-power-of-two argument:
ilog2[e] -- throw an error
ilog2w -- throw a warning
ilog2f -- round down to power of 2
ilog2c -- round up to power of 2
This is useful for back-converting from masks to bit values.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This implements the mechanism for XACQUIRE/XRELEASE. It does not
include the necessary annotations in insns.dat.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
insn->prefixes might contain not only values from
'enum prefixes' but from 'enum reg_enum' as well so
make it generic 'int' instead.
This calms down the compiler about enum's mess and
eliminates a wrong assumption that we always have
values by particular type in this field.
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
- a number of tabs to space conversion
- redundant spaces removed
- structure elements alignment
No functional changes.
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
The DREX encoding never hit production silicon, and has been replaced
by VEX/XOP encoding, so remove support for it.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
There is no need to hide this structure into a type.
The former preproc_ops is a way more descriptive.
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
__OUTPUT_FORMAT__ must consist of shortname of output format
or its alias, otherwise userspace ABI gets broken.
For example source code still can refer to __OUTPUT_FORMAT__=elf,
instead of __OUTPUT_FORMAT__=elf32.
BR3246990
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Move the #include of regs.h to the top with the other includes, and
make is_register() -- being a boolean predicate -- return bool.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
H. Peter Anvin noted:
|
| Could we avoid putting static code that has no dynamic content in
| dynamically generated files... it just complicates things unnecessarily.
|
| The above can move into nasm.h for example.
|
Good idea.
CC: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Two fixes:
1. Optimization of [bx+0xFFFF] etc
0xFFFF is an sbyte under 16-bit semantics,
so make sure to check it right.
2. Don't optimize displacements in -O0
Displacements that fit into an sbyte or
can be removed should *not* be optimized in -O0.
Implicit zero displacements are still optimized, e.g.:
[eax] -> 0 bit displacement, [ebp] -> 8 bit displacement.
However explicit displacements are not optimized:
[eax+0] -> 32 bit displacement, [ebp+0] -> 32 bit displacement.
Because #2 breaks compatibility with 0.98,
I introduced a new optimization level: -OL, legacy.
Apparently some people still care about compiling native on MS-DOS,
and we don't have a significant number of files which need adjustment.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Add OUT_REL1ADR (one-byte relative address) and support for
OUT_ADDRESs with size == 1. Add support for it in
outbin and outdbg. *It still needs to be added to other backends*,
both the OUT_REL*ADR and OUT_ADDRESS codepaths need to be handled.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Hopefully this should catch all of them... but please keep an eye out
for any other uses of int32_t for the operand flags.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
We only ever invoked the preprocessor with fixed values for efunc and
evalfunc, so call nasm_error() and evaluate() directly.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
We never set ofmt and errfunc to anything but the global values.
Dropping them from the label definition function command line
simplifies the code.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Remove a bunch of function pointers in the output stage; they are
never changed and don't add any value. Also make "ofile" a global
variable and let the backend use it directly.
All we ever did with these variables were stashing it in locals and
using them as-is anyway for no benefit.
Also change the global error function, nasm_error() into a true
function which invokes a function pointer internally. That lets us
use direct calls to it.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Hash all directives, even the ones that are backend-specific,
and instead pass the backend an already-parsed directive number.
Furthermore, unify null functions across various backends.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Instead of removing the list file on error, keep the list file and
include the errors in the list file. This makes it actually possible
to debug things that involve deep macro recursion, where the line
number is pretty much meaningless.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
*To the best of my knowledge*, we now have authorization from everyone
who has significantly contributed to NASM in the past. As such,
change the license to the 2-clause BSD license.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Allow the backend to specify that an output format is either text or
binary. For future uses, define this as a flag word so we can define
other flags in the future if it would make sense.
Currently, the ieee and dbg formats are text; all the others are
binary.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Add copyright headers to the *.c/*.h files in the main directory. For
files where I'm sure enough that we have all the approvals, I have
given them the 2-BSD license, the others have been given the "LGPL for
now" license header. Most of them can probably be changed after
auditing.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Add a byte code to explicitly support instructions which only uses the
low 8-bit registers (as if a REX prefix always was present.) This is
usable for instructions which are officially documented as using "the
low byte of a 32-bit register" and so on.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Handle AMD's XOP prefixes; they use basically the same encoding as VEX
prefixes, so treat them simply as a variant of VEX.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
WAIT is technically an instruction, but from an assembler standpoint
it behaves as if it had been a prefix. In particular, it has to be
ordered *before* any real hardware prefixes.
Move all the version strings to a single compilation unit, ver.c; this
does not include the version macros, which are fed into macros.c.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Don't use a redundant "const" for macros_t (which is const unsigned
char), since OpenWatcom doesn't like it, and I believe it is incorrect
per the C standard.
Any use of ins->forw_ref that isn't related to control of the
optimizer is fundamentally broken. Use
operand->opflags & OPERAND_FORWARD instead. This even has the nice
side benefit of simplifying the code.
ctype functions take an *int*, which the user is expected to have
taken the input character from getc() and friends, or taken a
character and cast it to (unsigned char).
We don't care about EOF (-1), so use macros that cast to (unsigned
char) for us.
Move the handling of "extra" macros (i.e. output format macros) into
the macros.pl mechanism. This allows us to change the format of the
internal macro store in the future - e.g. to a single byte store
without redundant pointers.
Also, stop using indicies into a long array when there is no good
reason to not just use different arrays.
Make strings a proper, first-class token type, instead of relying on
the "TOKEN_NUM with tv_charptr" hack. Only convert a string to a
number if requested in an expression context; this also makes it
possible to actually issue a warning when it overflows.
Add the -MP option to emit phony targets. Since this means each
header file has to be visited more than once, change the
implementation to use an internal list of all the dependencies, and
centralize the emission of the dependency files.
