Substitute in nasm64developer's "acfloat4" routine. This
floating-point conversion routine is not perfect (it gets a fair
number of LSB errors), but the old NASM code was just plain broken.
nasm64developer's code at least gets within ±1 LSB.
NASM currently doesn't compile with a C++ compiler, but the error
messages are sometimes useful. Define macros necessary for
<inttypes.h> to work with a C++ compiler.
Proper use of bool and enum makes code easier to debug. Do more of
it. In particular, we really should stomp out any residual uses of
magic constants that aren't enums or, in some cases, even #defines.
Per the comment:
* In a MMacro describing a `%rep' block, the `in_progress' field
* isn't merely boolean, but gives the number of repeats left to
* run.
This fixes the "global" directive not getting recognized, since it
repeats over all its arguments.
[rw]ptr represent the global position and need to be kept in sync with
[rw]pos:[rw]blk at all times. Failed to do that while seeking, with
obviously bad results.
Both C and C++ have "bool", "true" and "false" in lower case; C
requires <stdbool.h> for this, in C++ it is an inherent type built
into the compiler. Use those instead of the old macros; emulate with
a simple typedef enum if unavailable.
"len" should properly be initialized on every turn of the loop. It
can be initialized to any value >= blk_len that fits in a size_t.
(size_t)~0 would work except for any possible noncompliant C compilers
that have a signed size_t (illegal per C99 7.17.2).
SAA's were never intended to allow random access, but several backends
do random or semirandom access via saa_fread() and saa_fwrite()
anyway. Rewrite the SAA system to allow for efficient random access.
On "label.pl 10000000" this improves performance by a factor of 12.
Change cloc_t to struct location, and reorder the members so that it
should fit in 16 bytes instead of needing 8 bytes of extra padding on
64-bit machines.
Change loc_t to cloc_t to avoid AIX conflict.
We really shouldn't use _t names at all; they are usually considered
platform types, but worry about that later.
Concentrate compiler dependencies to compiler.h; make sure compiler.h
is included first in every .c file (since some prototypes may depend
on the presence of feature request macros.)
Actually use the conditional inclusion of various functions (totally
broken in previous releases.)
Use the same crc64 that we already use for the symbol table hash as
the perfect hash function prehash. We appear to get radically faster
convergence this way, and the crc64 is probably *faster*, since the
table likely to be resident in memory.
0F 18-1F are reserved for hinting NOPs; they all take a single memory
operand which may be sized. Allow the use of systematic names; this
also makes sure they get sensibly disassembled.
