Supplemental update to v1.5.4: move semantics, lods, stos, scas

This supplemental update to v1.5.4 features:

• more tests for move semantics; move semantics implemented for le, mod, mov, ne, psh.
• mbegin .. mend construct (implicit move semantics inside the block).
• bfstrip now doesn't strip unrecognized commands if bfmake flag -q is supplied.
• move semantics for sub, rcl and sto.
• countless manual updates.
• bfmake preserves files on failed build.
• the makefile works on Mach/BSD (thanks to @sech1p)
• optimization for mul reg, imm
• translation to and from trivial brainfuck substitutions (subst.pl)
• lods, stos, scas (check the manual/discord server for more).
• a full make target to build, install and test asm2bf.
• change the apperiance of hello-fancy.asm in the examples directory.
• alias _ to print in lib-bfm
• x64 Darwin binaries (@sech1p)

v1.5.4: bfvm rewrite, basic move semantics

This release fixes a few bugs and adds new features. Full changelog:

• fix: tps is now vxcallable.
• feature: u2s and s2u - casting between unsigned and signed numbers, both ways.
• updated manual
• bfvm rewrite; real segmentation mode / scale factor support.
• fix: cret now works correctly.
• move semantics support for and, add, div, eq, lt, gt, jmp, jnz and jz (introduced with ^ before instruction name).

Bugfix release over v1.5.3

A hotfix for the following:

• bfvm reading 0xFF on EOF
• constpp undefined behaviour
• tab-separated mnemonic + operand combination resulting in an error.

v1.5.3: 2021 release

Consider this more of a bugfix/stability release, with most features originating from the first three months of 2021. Featuring:

• removing obsolete generate_report
• xlt (1f85176)
• xge, xle optimized
• xge
• multiline constpp macros
• many new instructions implemented for bfvm
• a new ucode compiler.
• bugfixes to bfadbg (more edge-case handling in edit mode)
• improved compatibility with weird systems
• lbl imm optimization
• bfdata and bflabel performance improvements
• SK calculus evaluator example
• vxcall patch; bfdata addressing bugfixes.
• merged vxcall and constpp, bfdata and bflabels.
• sle now works correctly on an empty stack
• multiple bfvm bugfixes
• bfmake no longer requires -b to go along -c.
• bfvm output is more portable
• inline brainfuck is now supported by bfvm (although it's not optimized yet).
• linear-bounded automata optimizer in Java (remotely useful for asm2bf programs).

v1.5.2: new build system, bugfixes

• optimized stores to r4 (size)
• a few more examples
• gen_text macro
• dp2, dup2, fdup instructions
• axl - approximate with low precision
• sgeq, sgne
• xgt, xle - signed greater than & signed less or equal

v1.5.1: Tweaks and cleanups

This release features:

• rewritten bflabels / bfdata
• far pointers
• forward data declarations
• optimizing code label system
• tiny mode to bfasm (-t)
• most compile-time switches present before are now available as runtime flags.
• performance graphs
• #emit macro
• [bits N] construct preprocessed by bfdata.
• automatic warnings about bitwidth exceeding.
• bts core instruction (emitted by [bits N]).

v1.5.0: A milestone release - signed arithmetic.

This release brings us:

• basic signed arithmetic - sgadd, sgsub, sgmul, sgdiv, sgmod, sneg (signed negation), abs, sgn (signum).
• faster builds, better tests.
• asm2bf passes the magical amount of 35 000 lines of code, 130 instructions and 900 commits.
• enhanced error reporting.
• minor bugfixes
• cbegin and cend blocks for conditional instructions!

Roadmap for future versions:

• conditional variants
• comparisons
• conditional pipeline primers (1st and 2nd kind) for the comparisons.
• signed floating point arithmetic.
• chebyshev coefficients & trigonometric function approximation.
• floating point & constant square root.
• floating point approximation (calculate Nth decimal place).

build system changes, manual in the trunk

This version includes:

• refreshed bfstrip, with optional linebreak insertion in the file (wrap to width using --with-line-width=n while calling ./configure).
• manual in the trunk
• reorganized microcode for bfasm
• smarter bfmake (detecing the installed bfasm version).
• fcpush, fcpop, fcpsh aliases.
• lib-bfm stub changes
• bfvm jamming protector.
• fixed a single memory leak regarding effective
• fixed two buffer overflows
• fix the double-nocopy switch

AiO release (800 commits)

A large release. Features:

• small size optimizations for db
• escape sequences inside txt
• better error reporting
• asm2bf manual with a complete instruction set outline
• many bfvm microcode patches
• redpower (the asm2bf bootable kernel loader)
• two new instructions (fps/fpo, for pushing and popping the flag register state)
• a signed arithmetic polyfill draft,
• more examples
• autoconf migration.

Effective adress bugfixes; bfvm prototype.

This release features:

• -c switch for bfi, which will count the amount of cycles taken by the brainfuck program.
• Various changes regarding to effective adresses; stack-based ones; effective adress priming.
• stack gets / stack sets / stack length query (O(N)).
• vxcall
• bfvm prototype
• remove obsolete toolkit elements.

The documentation is currently being written.