## Copyright (C) 2017 Jeremiah Orians
## This file is part of M2-Planet.
##
## M2-Planet is free software: you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## M2-Planet is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
## GNU General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with M2-Planet.  If not, see <http://www.gnu.org/licenses/>.

* Current
** Added
Added common error catch for the declaration of variables inside of loops that usually results in crashes
Added support for C multi-strings

** Changed
Changed ELF headers for FreeBSD compatibility
Changed sha256 function to be more compatible with FreeBSD
Changed malloc behavior to accept non-exact brk returns
Changed looping tests to reflect new expected code behavior in regards to variable declaration inside of loops

** Fixed
Type regression in cc_* compatibility
Shift behavior to better match C standard
64bit host behavior in regards to primary_expr_number in knight tests
GCC 10 compatibility

** Removed

* 1.6 - 2020-04-30
** Added
Added test for chdir and getcwd family of posix primitives
Added fflush stub, for code to match our behavior when compiled with GCC (we don't buffer)
Added fseek and rewind functions

** Changed
Updated kaem
Revised 27 to include dwart stubs
Restructured tests to enable future growth
Reengineered M2-Planet to leverage blood-elf v1.0's output format

** Fixed
AArch64 wasteful stack
Fixed continue behavior
Generate fully proper elf output

** Removed

* 1.5 - 2020-02-01
** Added
Added support for \a and \b
Added support for long
Added support for size_t
Added support for ssize_t
Added support for const keyword
Added support for alternate instructions for signed/unsigned combinations
Added is_signed data to all types
Added support for signed multiplication, division and modulus
Added dist build target
Added a manpage for M2-Planet
Added support for nested structs thanks to fosslinux
Added support for access, chdir and fchdir primitives
Added AArch64 target (mescc-tools 0.7.0 required), all tests passing but rough on the edges
Added require support to reduce number of segfaults possible
Added first pass error checking in primitives
Added first knight-native cc-minimal.c

** Changed
Reordered types to prefer longs over unsigned over ints or chars
Replaced NOP with NULL to better match what it is really ment.
Enabled large binary support in knight-native

** Fixed
Typo: Recieved -> Received
ARMv7l elf-header regression
Corrected AMD64's xchg rax, rbx into it's proper encoding
A great deal of typos thanks to Andrius Štikonas
Regression in numerate_number
Segfault found in build_member when passed a non-number
Segfault found in tokenizer
Segfault in string hexifier
Enabled skipped cleanup scripts
Unbalanced { segfaults

** Removed
Removed bootstrap process as it belongs in mescc-tools-seed instead.
Removed need for fixup_int32
Removed unneeded lines in .gitignore

* 1.4 - 2019-06-23
** Added

** Changed
Tweaked cc_types.c to better match amd64 assembly
Replaced out with output_list in cc_core.c
For 32bit behavior on 64bit platforms
Replaced generated seed with hand written seed in M1

** Fixed

** Removed

* 1.3 - 2019-04-22
** Added
Added port to Knight-Native
Ported 24/24 working tests for AMD64
Added support for CONSTANT to leverage sizeof(type)

** Changed
Added basic verification of the compiled program (kaem) to test25
Added basic verification of the compiled program (Slow_Lisp) to test26
Updated from mescc-tools from 0.6.0 to 0.6.1 (To gain support for --64)
Changed test26 to adust behavior according to struct size

** Fixed
Corrected Global char* to behave correctly when given a static string
Ensured pointers match register size

** Removed
Removed need to hand calculate struct sizes

* 1.2 - 2019-04-14
** Added
Added 24/24 working tests for armv7l
Port to ARMv7l and ARMv6l both work

** Changed
ELF-code segment now writable for ARMv7l without debug
Updated from mescc-tools from 0.5.2 to 0.6 (with changes in checksums due to alternate null padding)

** Fixed
Fixed unsigned division in ARMv7l port
Fixed non-uniform behavior across locales and *BSDs
Fixed broken stack in ARMv7l thanks to dddddd

** Removed

* 1.1 - 2019-03-09
** Added
Added support for \f, \v and \e
Added refresh to bootstrap.sh to build seed from cc_x86.s
Added missing license headers
Added support for ~expressions
Added prototype for Slow_Lisp build test
Added Custom type for mes.h
Added support for octal and binary numbers
Added support for \0
Added support for GET_MACHINE_FLAGS in tests
Added --architecture flag
Added 24/24 working tests for knight-posix
Added working HEAP/malloc to knight-posix

** Changed
Converted M2-Planet to use GNU style error message
Seed.M1 when built will now have the same checksum as M2-Planet self-hosted
Harmonized license headers
Updated M1 to current version
Updated hex2 to current version
Updated get_machine to current version
Updated to mescc-tools 0.6.0 syntax
Changed default architecture to knight-native
Moved x86 specific exit.c and putchar.c to test/common_x86/functions
Relocated x86 specific libc.M1 to test/common_x86
Formalized Knight-posix execve standard
Relocated x86 specific file.c to test/common_x86/functions

** Fixed
Fixed typo in file headers
Fixed version number to reflect current version
Thanks to akkartik several documentation issues were identified and fixed
Corrected missed license headers
Fix regression caused by Linux 4.17
Fixed broken logic comparions for knight-posix
Fixed CONSTANT logic for knight-posix

** Removed
Removed redundent x86 definitions

* 1.0 - 2018-08-26
** Added
Added more generic logic to lookup_type
Added prim_types to simply the task of reducing search space to primitives

** Changed
Reorganized Primitive expression evaluation
Reorganized Collect_local to better match implementation
Broke out process_break
Changed ordering in declare_function to reduce stack operations
Converted weird_string collection into a simpler form
Inlined 2 small stubs as breaking them out wouldn't help implementation
Reordered conditionals for easier implementation and reduced operations
Broke out OUT and FUNCTION to silence a single GCC warning
Moved required_match and line_error into cc_core.c and removed required_match.c
Relocated contents of test/functions to functions
Upgrades mescc-tools to 40537c0200ad28cd5090bc0776251d5983ef56e3 commit
Tweaked order for for, while and do loops to make them more in commone
Tweaked source to better match assembly
Simplify implementation order of logic
Simplifed the promote_type logic to a much breifer form
Broke out generally useful member lookup
Upgraded seed.M1 to be generated by cc_x86

** Fixed
Fixed detection of locals to screen out all non-primitive name space collisions
Checked in updated gcc function definition
Changed's numerate_number's behavior related to zeros
Improved error message to help debugging
Fixed bootstrap.sh to build a working M2-Planet binary

** Removed
Removed redundent steps in Recursive statement
Removed several redundent steps in Collect_arguments

* 0.3 - 2018-08-12
** Added
Added support for global intializers
Introduced base offset local and argument load/store
Added function pointer requirement into M2-Planet
Added test24 - get_machine
Added General_Recursion to reduce complexity
Added uniqueID to purge all code segments that recreate it's functionality
Added struct Char arrays for structs
Added in_set to make complex conditional logic into a simple char search

** Changed
Made String naming 100% deterministic
Broke up all_expr to simplify any manual implementations
Cleaned up function calls
Simplify variable looksup
Reused a union to reduce globals
Brought back common recursion
Reorged logic tree to reduce complexity
Simplified expression
Changed EOF detection logic to deal with unsigned bits
Reduced Memory usage down from 50MB to 2MB
Simplified Tokenizer logic for easier implementation and understanding
Simplified program logic
Significantly reduced weird string detection logic
Trimmed escape_lookup down to a key core
Eliminated Several Minor unneeded steps

** Fixed
Correct bug in how \" is treated
Clean up of & when && should have been used
Made test22 for consistent
Fixed !c->a regression
Fixed ARM platform build
Reduced Memory usage per Token to size of string plus fixed padding

** Removed
Removed need for string copying in M2-Planet
Wasted steps in stack offsets
Need for stack relative offsets
Extra stack walks
Removed need for current_function
Removed unused values
Removed legacy x86 << >> hacks at the cost of more instructions

* 0.2 - 2018-06-21
** Added
Added type promotion to allow progress on mes.c
Add support for anonymous unions inside of structs
Added support for passing of function pointers via FUNCTION
Added support for Local functions
Added support for EOF
Added additional debug information to M2-Planet
Added line numbers and files names for errors in parsing to help debug
Added support for close and fclose
Added prototype support for chmod
Added basic support for escape strings
Added support for continue
Added string_length function to string.c
Added function numerate_string for converting string to integer
Added supporting hex2char, char2hex, dec2char and char2dec functions
Added support bitwise xor
Added Blood-elf test
Added Hex2_linker test
Added M1-macro test
Added prototypes to allow functions to be independently built
Added support for debug format output to help debugging
Added function specific counters to make output even more deterministic
Added M1-macro seed to eliminate C compiler dependency for bootstrap

** Changed
Improving Documentation to help new programmers get functional
Cleaned up numerate_number to make it more general purpose
Enabled stand alone builds of calloc
Unified bitwise operations
Made string.c more independent
Created a M1-macro stub file to simplify independent builds
Created a hex2_linker stub file to simplify independent builds
Created a blood-elf stub file to simplify independent builds

** Fixed
Minor cleanup and removal of unneeded whitespace
Fixed outstanding bug when struct foo* foo and foo->bar was used
Fixed ":foo bug
Fixed "\n:foo bug
Adjusted all previous references to numerate_number to ensure output is consistent
Fixed up reader so that '\'' and "\"" work correctly now
fixed "\"" bug in string output generation

** Removed
Removed need for memset in numerate_number
Removed minimal build target as it no longer serves a purpose
Removed independent counters for for, while and if jumps

* 0.1 - 2018-02-23
** Added
Added example programs
Added first generation libc
Added first generation defs.M1
added FOR Loop support along with example
Added support for assembly statements
Added CONSTANT to the language
Added support for <. >= and > expressions
Added struct support
Added unary - and ! support
Added additional functionality such as mixed structs, do while loops, gotos and tests for the new functionality
Incorporate breaks into loops
Became Self-Hosting

** Changed
Tweaked argument processing to help mescc support
Isolated global_token to cc.c
Moved strings to the bottom of the output
Broke out globals
Started to move type information out of hard-coded logic
Started adding tests instead of examples
Put common x86 platform logic in a shared folder to reduce duplicate code
Converted from legacy M2-Planet Input.c Output.c to M2-Planet -f input.c ... -f
Minor reordering of tests

** Fixed
expanded type support to include integer arrays
Reduced the memory churn in string creation
fixed Capitalization problems

** Removed
Removed need for enum in bootstrapping
Removed need for global output list
Eliminated the global stack
Reduced library dependencies

* 0.0 - 2017-07-05
** Added
Added minimal tokenizer
Added minimal string support
Added minimal parser

** Changed

** Fixed

** Removed
