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-PSn00bSDK changelog
-
-Items that are lower in the log are more recently implemented.
-
-11-19-2021 by spicyjpeg:
-
-* libc: Removed STACK_MAX_SIZE and added _mem_init() back. RAM and stack size
-  can now be set by calling _mem_init() manually before allocating any memory.
-
-* libc: sprintf() now supports fixed padding when using %@ (binary integer). 
-
-* psxapi: Added wrapper around BIOS function GetSystemInfo().
-
-* examples: Added pads example. Also added CMake build script to cartrom, which
-  is now built alongside all other examples.
-
-* Deprecated malloc.h and removed all references to it (stdlib.h should be used
-  instead). Moved int*_t and uint*_t types to stdint.h.
-
-* Fixed file permission errors when attempting to install the SDK on macOS.
-  Made some small updates to INSTALL.md.
-
-
-10-31-2021 by spicyjpeg:
-
-* Added tinyxml2 and mkpsxiso as git submodules and removed the (admittedly
-  short-lived) SKIP_* options completely. CMake's ExternalProject is no longer
-  used to download dependencies at build time.
-
-* Added CMake presets file with presets for building installer packages.
-
-
-10-25-2021 by Lameguy64:
-
-* Made a very tiny change in the readme file.
-
-* Included some of the indev directory from the SVN repository.
-
-
-10-17-2021 by spicyjpeg:
-
-* Added SKIP_TINYXML2 and SKIP_MKPSXISO build options in place of the old
-  SKIP_DOWNLOAD option, and a new BUNDLE_TOOLCHAIN option for building packages.
-  Updated INSTALL.md accordingly and fixed git branch error when downloading
-  mkpsxiso during build.
-
-* Rewritten toolchain.txt (which is now TOOLCHAIN.md) and added proper Windows
-  toolchain build instructions.
-
-* Added safety checks in CMake scripts to ensure elf2x/mkpsxiso are installed
-  before attempting to build an executable or CD image.
-
-* examples: Added CMake build script to (and removed makefile from) vagsample.
-
-
-10-06-2021 by Lameguy64:
-
-* psxspu: Fixed register typo in SpyKeyOn causing unpredictable instability.
-
-* psxspu: Fixed bug where SpuKeyOn does not set the key-on bits for voices 16 to 23.
-
-* examples: Added vagsample SPU example.
-
-
-09-27-2021 by spicyjpeg:
-
-* liblzp, tools: Fixed tools not building on MSVC and cleaned up LZP API
-  declarations (replaced meaningless void* pointers with proper types).
-
-* libpsn00b: Added missing PSN00BSDK_VERSION CMake variable.
-
-* examples: Fixed childexec (parent.exe) example crashing due to the child
-  executable not being relocated in the new build script. Patched n00bdemo to
-  suppress liblzp pointer type warnings.
-
-* Fixed another MSVC linker error when building tinyxml2 automatically, as well
-  as various toolchain/compiler test errors sometimes thrown by CMake. Updated
-  INSTALL.md with more details.
-
-
-09-13-2021 by spicyjpeg:
-
-* Migrated libpsn00b, tools, examples and template to CMake, added a top-level
-  CMakeLists.txt and the libpsn00b/cmake directory for CMake setup scripts, got
-  rid of the old makefiles and installation method.
-
-* Updated docs to match the new build system, moved installation instructions
-  to INSTALL.md and added doc/cmake_reference.md describing the SDK's CMake
-  API and variables.
-
-* mkpsxiso: Added rules to automatically download, build and install mkpsxiso
-  (as well as its dependencies) as part of the SDK.
-
-* cpack: Added initial CPack support and created the cpack directory containing
-  branding assets for installers built through CPack. A shell script is
-  provided to regenerate the assets from their source SVGs.
-
-* liblzp: Copied library headers to libpsn00b/include/lzp.
-
-* psxetc: Fixed a random typo in a javadoc comment (those should be eventually
-  rewritten into proper documentation anyway).
-
-* Added CMake, VS Code and DLL related entries to .gitignore.
-
-
-08-16-2021 by spicyjpeg:
-
-* psxetc: Added dynamic linking APIs (dl*, DL_*), implemented in dl.c and
-  _dl_resolve_wrapper.s. The APIs can be accessed by including dlfcn.h, while
-  another header (elf.h) provides structs and enums to help with manual parsing
-  of library headers.
-
-* libc: Removed _mem_init.s, improved heap initialization code. Added support
-  for setting how much RAM to use for the stack (by defining STACK_MAX_SIZE)
-  and for overriding/replacing the default memory allocator.
-
-* psxapi: Added wrapper around BIOS function FlushCache().
-
-* psxspu: Fixed wrong bounds check in SpuSetTransferStartAddr().
-
-* examples: Added an example showing how to compile dynamically-loaded
-  libraries (DLLs) and load them at runtime using the new dynamic linker.
-
-* libpsn00b: Added libpsn00b/ldscripts directory and linker scripts for both
-  executables and DLLs. Also fixed several broken header files (psxgpu.h not
-  including sys/types.h, missing scanf() declarations, ...).
-
-* Rewritten most makefiles (both for libraries and examples) and centralized
-  all compiler flags into a single psn00bsdk-setup.mk file for consistency and
-  easier editing. Added flags to build libpsn00b without gp-relative addressing
-  for compatibility with the dynamic linker. Also added nm commands to generate
-  symbol maps required by the linker.
-
-
-07-01-2021 by Lameguy64:
-
-* Libpsn00b: Added int8_t, int16_t, int32_t, int64_t, uint8_t, uint16_t,
-  uint32_t and uint64_t variable types in sys/types.h.
-  
-* psxgte: Replaced unsigned int variable types with u_long to further
-  improve compatibility with code written for the official Sony SDK and
-  to make my tutorial examples easier to compile on PSn00bSDK. Example
-  programs have been updated to account for this change.
-  
-* psxcd: Changed type of 2nd argument of CdRead() from u_int to u_long,
-  as well as changing the type of the size element in CdlFILE from u_int
-  to u_long.
-  
-
-02-17-2021 by Lameguy64:
-
-* Improved build instructions in readme file and fixed some typos.
-
-* Improved toolchain.txt instructions.
-
-* tools: Added experimental elf2cpe converter for executing PSn00bSDK
-  programs in official development units. No debug symbols however.
-
-* Fixed prefixes to allow SDK libraries and examples to be built
-  with mipsel-none-elf.
-  
-* examples: Fixed typo in plasma_tbl.h causing multiple definitions when
-  compiling with newer versions of GCC in n00bdemo.
-
-* examples: cartrom example now marked as obsoleted, but still kept for
-  reference purposes.
-  
-* Includes alextrevisan's GTE macros in inline_c.h.
-
-* Added makefile template.
-
-
-01-05-2021 by Lameguy64:
-
-* psxgpu: Added struct names to many primitives.
-
-* psxgte: Defined SquareRoot0() and SquareRoot12().
-
-* psxgte: Added gte_lddp() C macro.
-
-* examples: Added C++ demo.
-
-* Updated readme a bit.
-
-
-11-29-2020 by Lameguy64:
-
-* libpsn00b: Defined MDEC hardware and related DMA registers in hwregs_a.h file.
-
-* psxgte: Fixed entry typo in table of squareroot.s (pointed out by SoapyMan).
-
-* libc: memmove updated to account for forward-looped memory move (by ckosmic).
-
-* examples: Removed redundant toolchain executable definitions in the makefiles.
-  
-* examples: Included HDTV example for Github repo.
-
-
-09-19-2020 by Lameguy64:
-
-* Revised makefiles for building the libraries and examples in a way to make
-  building with different toolchain versions easier with the PSN00BSDK_TC
-  environment variable. Library installation and linking is also made easier
-  with the PSN00BSDK_LIBS environment variable. See readme in the libpsn00b
-  directory for details.
-  
-* examples: Fixed libgcc not found error when compiling some of the examples.
-
-* libc: Added strtok().
-
-* libc: Added support for command line arguments. Pass arguments via
-  SYSTEM.CNF BOOT= string or a string array with Exec(). Arguments can
-  be read via argc/argv[] in main() or __argc/__argv anywhere else.
-  
-* libc: Added SetHeapSize().
-
-* psxgpu: Moved ISR and callback subsystem to psxetc. You'll have to link
-  psxetc after psxgpu and psxapi after psxetc in your library string.
-
-* psxetc: Moved debug font functions (FntInit(), FntOpen(), etc) to psxgpu.
-
-* psxetc: Fixed stack management in RestartCallback().
-
-* examples: Added argument passing in childexec example.
-
-* psxcd: Fixed crashing on PSIO and possibly some emulators by implementing
-  a response buffer read limiter.
-  
-* psxgpu: Interrupts are now disabled before setting up ISR and callbacks
-  in ResetGraph(), as LoadExec() still has interrupts enabled when jumping
-  to the loaded PS-EXE's entrypoint. Fixes programs made with PSn00bSDK
-  crashing at ResetGraph() on PSIO when loading from the Menu System and
-  possibly some emulators.
-
-
-07-25-2020 by Lameguy64:
-
-* psxgte: Added ScaleMatrixL().
-
-* doc: Corrected documentation for CdReadSync() function.
-
-* psxcd: Added new define: CdlIsoLidOpen.
-
-* psxcd: Updated media change detection logic, media change is checked
-  by lid open status bit in all CD-ROM file functions. CdControl() calls will
-  also trigger the media change status on lid open.
-  
-* psxcd: Fixed bug in CdGetVolumeLabel() where it constantly reparses the file
-  system regardless of media change status.
-  
-* examples: Updated cdrom/cdbrowse example slightly.
-
-* psxcd: Added CdLoadSession().
-
-* psxcd: Fixed bug where CdReadDir() locks up in an infinite loop when it
-  encounters a NULL directory record, and the parser has not yet exceeded the
-  length of the directory record.
-  
-* doc: Replaced library version numbers with SVN revision numbers in the
-  introduced fields.
-  
-* doc: Started work on CD-ROM library overview.
-
-
-04-24-2020 by Lameguy64:
-
-* Refined toolchain instructions a bit.
-
-* psxcd: Added automatic read retry for CdRead() operations, as long as
-  CdReadSync() is called until read completion.
-
-* psxapi: Added BIOS atoi() and atol() calls. Temporary, may be replaced with
-  a faster implementation
-  
-* psxsio: Added ioctl() support for FIOCSCAN to probe for pending input in
-  serial tty driver.
-  
-* examples: Reorganized examples, added new tty and console examples.
-
-
-03-11-2020 by Lameguy64:
-
-* psxcd: Fixed CdInit() syntax (there should be no arguments).
-
-* psxcd: Fixed CdlFILE, loc variable renamed to pos.
-
-* documentation: Improved and updated toolchain instructions a bit.
-
-
-02-28-2020 by Lameguy64:
-
-* documentation: Added docs for CdOpenDir(), CdReadDir() and CdCloseDir().
-
-* psxgpu: Added GetODE().
-
-* psxspu: Fixed SpuKeyOn() bug where only 16 of the 24 channels can be
-  activated, due to channel bits being written as a 16-bit word.
-
-* psxcd: Added CdOpenDir(), CdReadDir() and CdCloseDir() for parsing directories.
-
-* psxcd: Issuing CdlNop (GetStat) commands now triggers the media change flag
-  internal to the libraries when CD lid is opened, so file system functions can
-  update the cached ISO descriptor when the disc has been changed.
-  
-* psxcd: Made internal variables and functions for iso9660 parsing static.
-
-
-02-25-2020 by thp:
-
-* libc: Added abs and labs() functions.
-
-  
-01-06-2020 by Lameguy64:
-
-* libpsn00b: Renamed libpsxcd directory to psxcd to match with other libraries.
-
-* examples: Added obligatory hello world example.
-
-* documentation: Added CD-ROM library documentation.
-
-
-11-22-2019 by Lameguy64:
-
-* psxapi: Added root counter or timer functions and related definitions.
-
-* examples: Added timer example.
-
-* psxgpu: Added DR_AREA, DR_OFFSET and DR_TWIN primitives and accompanying
-  setDrawArea(), setDrawOffset() and setTexWindow() macros.
-
-* psxgpu: Added parenthesis to argument value in setlen(), setaddr() and
-  setcode() macros, preventing addPrims() from being used in a more
-  sensible manner (ie. addPrims(ot, sub_ot+3, sub_ot)).
-  
-* examples: Added render2tex render to texture example.
-
-* psxspu: Fixed typo in spuinit.s on section specifier specifying a data
-  section instead of text section, resulting to jump to
-  non-instruction-aligned linker errors.
-  
-* psxgpu: Increased ISR stack size to 2048 bytes.
-
-* psxsio: Added kbhit() to poll keyboard input asynchronously and stdin
-  is now buffered with an IRQ handler.
-
-* psxapi: Added AddDummyTty() (for psxsio DelSIO() fix).
-
-* psxsio: DelSIO() now calls AddDummyTty().
-
-* libc: Fixed bug in strncpy() not placing a NULL byte at end of string.
-
-* libc: Fixed strchr() and strrchr() declarations commented out in string.h.
-
-* libpsn00b: Added the long awaited libpsxcd library with cdxa example.
-  Documentation will come soon but existing libcd docs should be good
-  enough for awhile.
-
-* psxgpu: Fixed non functioning GPU DMA wait in DrawSync().
-
-* LibPSn00b run-time library is now officially 0.15b.
-
-
-10-11-2019 by Lameguy64:
-
-* psxetc: Added FntOpen(), FntPrint() and FntFlush() functions.
-
-* psxgpu: Fixed typo in termPrim() macro (value too long).
-
-* examples: Added billboarding sprites example.
-
-* psxapi: Transferred putchar() BIOS function to libc.
-
-* libpsn00b: Updated makefiles adding -fdata-sections and -ffunction-sections
-  so unused functions will be stripped out, which yields smaller executables.
-
-* libc: Fixed negative integers not displaying properly in vsprintf()/vsnprintf().
-  
-* libc: Fixed zero padding not working in vsprintf()/vsnprintf().
-
-* fpscam: Added debug text using FntOpen(), FntPrint() and FntFlush(). Also added
-  _boot() call for returning to CD based serial loaders.
-
-
-09-23-2019 by Lameguy64:
-
-* libc: Added strcat() function.
-
-* Included PSn00bSDK logo vector.
-
-* psxgte: Added gte_stsz() macro.
-
-* psxgpu: Fixed typos in setUVWH() macro.
-
-* Added _boot() BIOS function (A(A0h) aka Warmboot, useful for CD based
-  serial loaders).
-
-
-08-17-2019 by Lameguy64:
-
-* LibPSn00b run-time library is officially version 0.13b.
-
-* examples: updated balls and n00bdemo examples for the setDrawTPage()
-  correction.
-
-* psxgpu: Fixed error on setDrawTPage() syntax and removed setDrawTPageVal()
-  macro (not needed).
-
-* psxapi: Added event handler definitions related to memory cards.
-
-* psxapi: Added BIOS memory card functions.
-
-* examples: Added childexec example demonstrating a parent executable
-  transferring execution to a child executable and back.
-
-* elf2x: s_addr no longer set on PS-EXE header, console BIOS already sets it
-  by STACK value in SYSTEM.CNF and allows child executables to return to
-  parent if left zero.
-
-* psxapi: Renamed _InitPad(), _StartPad() and _StopPad() to InitPAD(),
-  StartPAD() and StopPAD() respectively. Fpscam example updated to new
-  syntax.
-
-
-07-18-2019 by Lameguy64:
-
-* Added fpscam example.
-
-* Gave examples small descriptions.
-
-* Updated readme a little.
-
-
-07-17-2019 by Lameguy64:
-
-* LibPSn00b run-time library is officially version 0.12b.
-
-* libc: Added basic C++ support (many thanks to ijacquez).
-
-* libc: Updated start function that should make it possible for a child
-  executable to return to a parent executable, return logic automatically
-  calls EnterCriticalSection().
-
-* libc: Updated build method which takes libgcc from the compiler and adds
-  its own object files into it, eliminating linker problems caused by having
-  to order libc and libgcc libraries in a specific manner.
-  
-* psxgpu: Added RestartCallback().
-
-* psxgpu: Added StoreImage() function.
-
-* psxgpu: Fixed bugged setRECT() macro.
-
-* libc: Added assert.h.
-
-* examples: Balls example now has 166% more balls.
-
-* psxgpu: Increased ISR stack size to 1024 bytes so printf can be used in
-  callbacks safely.
-
-* libc: Removed int64 (long long) printing in vsprintf() for better
-  performance, as the R3000 does not support 64-bit arithmetic natively
-  so its emulated like floats. int64 still used for processing floats and
-  doubles and old vsprintf.c file is still included for those who really
-  want int64 support for whatever reason.
-  
-* libc: Removed stdarg.h which is part of GCC and not license compatible
-  with MPL. The toolchain compiled with libgcc provides stdarg.h and other
-  standard headers.
-  
-* examples: Updated sdk-common.mk variable convention for better flexibility.
-
-* libpsn00b: Added common.mk file containing global values for all libraries.
-
-* Updated library and toolchain build instructions.
-
-* psxgpu: Fixed bug in DMACallback where the internal DMA handler would fail
-  to install due to GetInterruptCallback() retrieving the callback value
-  immediately in the branch delay slot of a jr instruction, which resuls to
-  an inconsistent return value. This also broke DrawSyncCallback().
-  
-* psxsio: Done fixes on _sio_control() from the aformentioned issues with load
-  instructions in delay slots.
-  
-* psxgte: Added DVECTOR struct.
-
-* psxgpu: Added setLineF2(), setLineG2(), setLineF3() and setLineG3()
-  primitive macros.
-  
-* Added more functions in documentation.
-  
-
-07-01-2019 by williamblair:
-
-* Fixed FntLoad() Y coordinate not working properly for debug font (due to
-  Y coordinate not being specified for the getTPage() macro.
-
-
-06-23-2019 by Lameguy64:
-
-* LibPSn00b Run-time Library is officially version 0.10b.
-
-* Reworked readme file with improved build instructions.
-
-* libpsn00b: Added missing C extern groups for C++ compatibility in
-  psxapi.h, stdlib.h and string.h.
-
-* libpsn00b: Removed changelogs in the readmes of each libpsn00b library
-  as its much easier to keep track of changes in a single changelog than
-  scattering them across multiple changelogs.
-
-* psxapi: Added Exec() function and EXEC struct.
-
-* psxgpu: Added DrawPrim() function (uses direct I/O).
-
-* psxgpu: VSync() function completely overhauled. Logic is now based on
-  Sony's code but more efficient and can return total number of vblanks
-  elapsed, number of hblanks since last call and wait up to n vblanks
-  specified by an appropriate argument value. It will also generate a
-  timeout when vblank interrupt stops working and would attempt to
-  restart it.
-
-* psxapi: Added gets() and getc() BIOS functions.
-
-* psxapi: Corrected a putc()/putchar() discrepancy. putc() puts a character
-  to a file stream, putchar() puts a character to stdout.
-
-* Completely revised library reference manual with better formatting and
-  more functions documented.
-
-* psxgpu: Added DrawSyncCallback().
-
-* psxgpu: Implemented DMA interrupt callback system with DMACallback()
-  allowing to handle DMA interrupts very easily.
-
-* libpsn00b: Implemented Serial I/O library (psxsio) with serial tty device
-  (installed using AddSIO) and serial callback support. Serial library
-  is also fully documented.
-
-* psxgpu: Implemented IRQ callback system with InterruptCallback() allowing
-  to set interrupt callbacks very easily.
-  
-* psxgpu: Implemented proper IRQ handler installed using HookEntryInt or
-  SetCustomExitFromException() for handling VSync and other interrupts.
-  ChangeClearPAD(0) must now be called after _InitPad() or vsync timeout
-  will occur.
-
-* libpsn00b: Started making local labels prefixed with .L instead of . making
-  them not appear in symbol lists resulting in a cleaner symbol dump. Still
-  not possible to do function-scope local labels like in ASMPSX because GAS
-  syntax is ASS (or ASS GAS which is farts, GAS is farts).
-  
-* psxgpu: DrawSync() function now waits for DMA completion and GPU transfer
-  ready instead of simply waiting for GPU transfer ready which is the likely
-  cause of subtle GPU related timing issues, it also sets GPU DMA transfer
-  mode to off afterwards. It can also read number of words remaining in DMA
-  transfer if a0 is non-zero but it likely only returns the correct value on
-  VRAM transfers. Exact way how DrawSync() returns the count in the official
-  SDK is currently unknown.
-
-
-06-07-2019 by qbradq:
-
-* lzpack: Swapped a buffer length litteral with sizeof operator, fixing a
-  stack overflow bug in some instances.
-
-
-05-23-2019 by Lameguy64:
-
-* Added dev notes.txt file in docs that includes notes about the many
-  quirks about the console discovered during the development of this
-  SDK project.
-
-* Updated libn00bref.odf a little.
-
-* Added turboboot example.
-
-* Added rgb24 example.
-
-* Got custom exit handler set using SetCustomExitFromException() (BIOS
-  function B(19h)) working. Currently used to acknowledge VSync IRQ but
-  actual VSync handling is still done with events and needs to be
-  transferred to the custom exit handler. At least it lets BIOS
-  controller functions to work now. See doc/dev notes.txt for details
-  on how this handler behaves.
-
-* Made stack usage in ResetGraph() less wasteful. You only need to
-  allocate N words on stack based on N arguments of the function
-  being called.
-
-* VSync IRQ handling now done using a custom exit from exception handler.
-  Actual VSync handling is yet to be moved to the custom exit handler
-  though.
-
-* Made stack usage in start.s of libc a lot less wasteful.
-
-* Implemented controller support via BIOS functions (use _InitPad(),
-  _StartPad() and _StopPad()). BIOS memory card functions may also
-  work as well but its not tested yet.
-
-* Removed duplicate initpad.s and initcard.s functions in psxapi.
-
-* Added _InitCd() function to psxapi which is a safer version of _96_init()
-  as it preserves other DMA channel settings. Use BIOS file functions such
-  as open(), read() and close() with path names starting with cdrom:/ to
-  access files from CD after calling _InitCd().