(pradix && pradix > sradix) etc. is unnecessary since pradix and
sradix cannot be negative, so zero is always the smallest value.
Put in a comment explaining why making the default radix == 10 doesn't
need any additional error checking.
Allow any radix letter from the set [bydtoqhx] to be used either
"Intel-style" (0...x) or "C-style" (0x...). In Intel style, the
leading 0 remains optional as long as the first digit is in the range
0-9.
As a consequence, allow the prefix "0h" for hexadecimal floating
point.
- Allow underscores as group separators in numbers, for example:
0x1234_5678 is now a legal number. The underscore is just ignored,
it adds no meaning.
- Recognize dotless floating-point numbers, such as "1e30". This
entails distinguishing hexadecimal numbers in the scanner, since
e.g. 0x1e30 is a perfectly legitimate hex constant.
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.
[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.
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.)
To deal with fools^Wpeople trying to keep really old systems alive,
create a proper framework for substitution functions, and make it
possible to deal with the lack of snprintf/vsnprintf in particular.
Add nasm_zalloc(), a wrapper around calloc(), to allocate
zero-initialized memory. For large allocations, this is often far
more efficient than allocating and zeroing, since the operating system
tends to keep a pool of zero pages around.
Finish the perfect hash tokenizer, and actually enable it.
Move stdscan() et al to a separate file, since it's not needed in any
of the clients of nasmlib other than nasm itself.
Run make alldeps.
Implement "REL" and "ABS" modifiers for offsets in 64-bit mode. This
replaces "rip+XXX" type addressing. The infrastructure to set the default
mode is there, but there is nothing to throw the switch just yet.
- MOV gpr,CRx or MOV CRx,gpr can access high control registers with a LOCK
prefix; handle that in both the assembler and disassembler.
- Get a saner error message when trying to access high resources in
non-64-bit mode.
