papermario/tools/splat/CHANGELOG.md

splat Release Notes

0.11.2

• The way options are parsed and accessed has been completely refactored. The following option names have changed:

linker_symbol_header_path -> ld_symbol_header_path

asm_endlabels -> asm_end_label

Additionally, any custom segments or code that needs to read options will have to accommodate the new API for doing so. Options are now fields of an object named opts within the existing options namespace. Because the options are fields, get_ is no longer necessary. To give an example:

Before: options.get_asm_path()

After: options.opts.asm_path

The clean_up_path function in linker_entry.py now uses a cache, offering a small performance improvement during the linker script writing phase.

0.11.1

• The linker script now includes a _SIZE symbol for each segment.
• The new create_asm_dependencies, if enabled, will cause splat to create .asmproc.d files that can inform a build system which asm files a c file depends upon. If your build system is configured correctly, this can allow triggering a rebuild of a C file when its included asm files are modified.
• Splat no longer depends directly on pypng and now instead uses n64img. Currently, all image behavior uses the exact same code. Eventually, n64img will be implemented in C and support rebuilding images as well.

0.11.0: Spimdisasm Returns

Spimdisasm now handles data (data, rodata, bss) disassembly in splat! This includes a few changes in behavior:

• Rodata will be migrated to c files' asm function files when a .rodata subsegment is used that corresponds with an identically-named c file. Some symbols may not be automatically migrated to functions when it is not clear if they belong to the function itself (an example of which being const arrays). In this case, the partial_migration option can be enabled for the given .rodata subsegment and splat will create .s files for these unmigrated rodata symbols. These files can then be included in your c files, or you can go ahead and migrate these symbols to c and disable the partial_migration feature.

• BSS can now be disassembled as well, and the size of a code segment's bss section can be specified with the bss_size option. This option will tell splat how large the bss section is in bytes so BSS can properly be handled during disassembly. For bss subsegments, the rom address will of course not change, but the vram address should still be specified. This currently can only be done in the dict form of segment representation, rather than the list form.

Thanks again to AngheloAlf for adding this functionality and continuing to improve splat's disassembler.

0.10.0: The Linker Script Update

Linker scripts splat produces are now capable of being shift-friendly. Rom addresses will automatically shift, and ram addresses will still be hard-coded unless the new segment option follows_vram is specified. The value of this option should be the name of a segment (a) that this segment (b) should follow in memory. If a grows or shrinks, b's start address will also do so to accommodate it.

The enable_ld_alignment_hack option and corresponding behavior has been removed. This proved to add too much complexity to the linker script generation code and was becoming quite a burden to keep dealing with. Apologies for any inconvenience this may cause. But trust me: in the long run, it's good you won't be depending on that madness.

0.9.5

• Changes have been made to the linker script such that it is more shiftable. Rather than setting the rom position to hard-coded addresses, it increments the position by the size of the previous segment. Some projects may experience some alignment-related issues after this change. If specified, the new segment option align: n will add an ALIGN(n) directive for that section's linker segment.

0.9.4

• A new linker script section is now automatically created when the .bss section begins, using NOLOAD as opposed to the previous hacky rom rewinding we were previously doing. Additionally, ld_section_labels now includes .rodata by default.

0.9.3

• Added add_set_gp_64 option (true by default), which allows controlling whether to add ".set gp=64" to asm/hasm files

0.9.2

• Added "palette" argument to ci4/ci8 segments so that segments' palettes can be manually specified

0.9.1

• Fixed a bug in which local labels and jump table labels could replace raw words in data blobs during data disassembly

0.9.0: The Big Update

Introducing spimdisasm!

• Thanks to AngheloAlf, we now have a much better MIPS disassembler in splat! spimdisasm has much better hi/lo matching, much lower ram usage, and plenty of other goodies.

We plan to roll this out in phases. Currently, it only handles actual code disassembly. Later on, we will probably migrate our current data assembly code to use spimdisasm as well.

NOTICE: This integration has been tested on a variety of games and configurations. However, with any giant change to the platform like this, there are bound to be things we didn't catch. Please be patient with us as we handle these remaining issues. Though from what we've seen already, the slight bugs one may come across are totally worth the much improved disassembly.

gfx segment type

• A new gfx segment type is available, which creates a c file containing a disassembled display list according to the segment's start and end offsets. Thanks to Glank and Tharo for their work on libgfxd and pygfxd, respectively, for helping make this a possibility in splat.

API breaking changes

• Some Segment() arguments have changed, which may cause extensions to break. Please see the __init__ function for Segment for more details.

symbol_addrs.txt changes

• symbol_addrs now supports the segment: attribute, which allows specifying the symbol's top-level segment. This can be helpful for symbol resolution when overlays use overlapping vram ranges. See exclusive_ram_id below for more information.

Global options changes

The new symbol_name_format option allows specification of how symbols will be named. This can be set as a global option and also changed per-segment. symbol_name_format_no_rom is used when the symbol does not have a rom address (BSS).

The following substitutions are allowed:

$ROM - the rom address of the symbol, hex-formatted and padded to 6 characters (ABCF10, 000030, 123456) (note: only for symbol_name_format, usage in symbol_name_format_no_rom will cause an error)

$VRAM - the vram address of the symbol, hex-formatted and padded to 8 characters (00030010, 00020015, ABCDEF10)

$SEG - the name of the top-level segment in which the symbol resides

The default values for these options are as follows

symbol_name_format : $VRAM

symbol_name_format_no_rom : $VRAM_$SEG

The appropriate prefix string will still automatically be applied depending on the type of the symbol: D_ for data, jtbl_ for jump tables, and func_ for functions. This functionality may be customizable in the future.

---

The auto_all_sections option now should be a list of section names ([".data", ".rodata", ".bss"] by default) indicating the sections that should be linked from .o files built from source files (.c or asm/hasm .s files), when no subsegment explicitly indicates linking this type of section.

For example, if any subsegment of a code segment is of segment type data or .data, the .data section from all c/asm/hasm subsegments will not be linked unless explicitly indicated with a relevant .data subsegment.

Previously, this option was a bool, and it enabled this feature for all sections specified in section_order. Now, the desired sections must be specified manually. The default value for this option retains previous behavior.

---

The new mips_abi_float_regs option allows for changing the format of float registers for MIPS disassembly. The default value does not change any prior behavior, but o32 is heavily encouraged and may become the default option in the future. For more information, see this great writeup.

---

The new gfx_ucode option allows for specifying the target for the graphics macro format, which is used in the gfx segment type. The default is f3dex2.

Segment options changes

The new exclusive_ram_id segment option allows specifying an identifer that will prevent the segment from seeing any symbols from other segments with the same identifer. This is useful when multiple segments are mapped to the same vram address at runtime and should never be able to refer to each other's symbols. Setting all of these segments to have the same value for this option will prevent their symbols from clashing / meshing unexpectedly.

---

The overlay setting on segments has been removed. Please see symbol_name_format above for info on how to influence the names of symbols, which can be applied at the segment level as well as the global level.

---

0.8.0: Arbitrary Section Order

• You can now use the option section_order to define the binary section order for your target binary. By default, this is [".text", ".data", ".rodata", ".bss"]. See options.py for more details
• Documented all options in options.py
• Support for SN64 games (thanks Wiseguy!)
• More consistent handling of paths (thanks Mkst!)
• Various other cleanup and fixes across the board

0.7.10: WIP PSX support

• WIP PSX support has been added, thanks to @mkst! (https://github.com/ethteck/splat/pull/99)
  • Many segments have moved to a "common" package
  • Endianness of the input binary is now a configurable option
• Linker hack restored but is now optional and off by default

0.7.9

• Finally removed the dumb linker section alignment hack
• Added version number to output on execution

0.7.8

• Fixed a bug relating to a linker section alignment hack (thanks Wiseguy!)
• Fixed a bug in linker_entry.py's clean_up_path that should make this function more versatile (thanks Wiseguy!)

0.7.7

• Disassembly now reads the size property of a function in symbol_addrs.txt to disassemble size / 4 number of instructions. Feel free to specify the size of your functions in your symbol_addrs file if splat's disassembly is chopping a function too short or making a function too long.

0.7.6

• Fixed a bug involving detection of defined functions in c files for GLOBAL_ASM-using projects
• Added options to disable the creation of undefined_funcs/syms_auto.txt files
• Added a Vtx segment type for creating c files containg model vertex data in the n64 libultra Vtx format
• Added a cpp segment type which is identical to c but looks for a file with the extension ".cpp" instead of ".c".

0.7.5: all_ types and auto_all_sections

If you have a group segment with multiple c files and want splat to automatically create linker entries at a given position for each code object (c, asm, hasm) in the segment, you can use an all_ type for that section. For example, you can add [auto, all_bss] as the last subsegment in a segment. This will direct splat to create a linker entry for each code object in the segment. This saves a lot of time when it comes to manually adding .bss subsegments for bss support, for example. The same thing can be done for data and rodata sections, but note this should probably be done later into a project when all data / rodata is migrated to c files, as the all_ types lose the rom positioning information that's necessary for splat to do proper disassembly.

The auto_all_sections option, when set to true, will automatically add all_ types into every group. This is only done for a section in a group if no other manual declarations for that section exist. For example, if you have 30 c files in a group and a .data later on for one of them, auto_all_sections will not interfere with your .data subsegment. If you remove this, however, splat will use auto_all_sections to implicitly .data subsegments for all of your code objects behind the scenes. This feature is again particualrly helpful for bss support, as it will create bss linker entries for every file in your project (assuming you don't have any manual .bss subsegments), which eliminates the need to create dummy .bss subsegments just for the sake of configuring the linker script.

0.7.2

• Data disassembly changes:
  • String detection has been improved. Please send me false positives / negatives as you see them and I can try to improve it further!
  • Symbols in a data segment pointed to by other symbols will now properly be split out as their own symbols

0.7.1

• Image segment changes:
  • Added flip_x and flip_y boolean parameters to replace flip.
    • flip is deprecated and will produce a warning when used.
    • Fixed flipping of ci4 and ci8 images.
  • Fixed extract: false (and start: auto) behaviour.

0.7.0: The Path Update

• Significantly better performance, especially when using the cache feature (--use-cache CLI arg).
• BREAKING: Some cli args for splat have been renamed. Please consult the usage output (-h or no args) for more information.
  • --new has been renamed to --use-cache
  • --modes arg changes:
    • Image modes have been combined into the img mode
    • Code and ASM modes have been combined into the code mode
• BREAKING: The name attribute of a segment now should no longer be a subdirectory but rather a meaningful name for the segment which will be used as the name of the linker section. If your name was previously a directory, please change it into a dir.
• BREAKING: subsections has been renamed to subsegments
• New dir segment attribute specifies a subdirectory into which files will be saved. You can combine dir ("foo") with a subsection file name containing a subdirectory ("bar/out"), and the paths will be joined (foo/bar/out.c)
  • If the dir attribute is specified but the name isn't, the name becomes dir with directory separation slashes replaced with underscores (foo/bar/baz -> foo_bar_baz)
• BREAKING: Many configuration options have been renamed. _dir options have been changed to the suffix _path.
• BREAKING: Assets (non-code, like bin and images) are now placed in the directory asset_path (defaults to assets).
• Linker symbol header generation. Set the linker_symbol_header_path option to use.
  • typedef u8[] Addr; is recommended in your common.h header.
• You can now provide auto as the start attribute for a segment, e.g. [auto, c, my_file]. This causes the segment to not be extracted, but linked. This feature is intended for modding.
• Providing just a ROM address but no type or name for a segment is now valid anywhere in segments or subsegments rather than just at the end of the ROM. It specifies the end of the previous segment for types that need it (palette, bin, Yay0) and causes the linker to simply write padding until that address.
• The linker script file is left untouched if the contents have not changed since the previous split.
• You can now group together segments with type: group (similar to code). Note that any ASM or C segments must live under a type: code segment, not a basic group.

0.6.5: Bugfixes, rodata migration, and made options static

If you wrote a custom extension, options should be imported and statically referenced from util import options

see options.py for more info on how to now get and set options

BREAKING: vram can only be specified on a segment if the segment is defined as a dict in the config

0.6.3: More refactoring

Breaking Change: The command line args to split.py have changed. Currently, only the config path is now a required argument to splat. The old rom and outdir parameters are now optional (--rom, --outdir). Now, you can add rom and out directory paths in the yaml.

The out_dir option specifies a directory relative to the config file. If your config file is in a subdirectory of the main repo, you can set out_dir: ../, for example.

The target_path option spcifies a path to the binary file to split, relative to the out_dir. If your baserom.z64 is in the top-level of the repo, you can set target_path: baserom.z64, for example.

0.6.2: subsegments

I've begun a refactor of the code "files" code, which makes everything cleaner and easier to extend. There's also a new option, create_new_c_files, which disables the creation of nonexistent c files. This behavior is on by default, but if you want to disable it for any reason, you now have the option to do so.

I am also working on adding bss support as well. It should almost be all set, aside from the changes needed in the linker script.

Breaking change: The files field in code segments should now be renamed to subsegments.

0.6.1: assets_dir option

This release adds a new assets_dir option in splat.yamls that allows you to override the default img, bin, and other directories that segments output to.

Want to interdisperse split assets with your sourcecode? assets_dir: src! Want to have all assets live in a single directory? assets_dir: assets!

0.6: The Symbol Update

Internally, there's a new Symbol class which stores information about a symbol and is stored in a couple places during disassembly. Many things should be improved, such as reconciling symbols within overlays, things being named functions vs data symbols, and more.

Breaking change: The format to symbol_addrs.txt has been updated. After specifying the name and address of a symbol (symbol = addr;), optional properties of symbols can be set via inline comment, space delimited, in any order. The properties are of the format name:value

• type: supports func mostly right now but will support label and data later on. Internally, jtbl is used as well, for jump tables. Splat uses type information during disassembly to disambiguate symbols with the same addresses.
• rom: is for the hex rom address of the symbol, beginning with 0x. If available, this information is extremely valuable for use in disambiguating symbols.
• size: specifies the size of the symbol, which splat will use to generate offsets during disassembly. Uses the same format as rom:

function example: FuncNameHere = 0x80023423; // type:func rom:0x10023

data example: gSomeDataVar = 0x80024233; // type:data size:0x100

0.5 The Rename Update

• n64splat name changed to splat
  • Some refactoring was done to support other platforms besides n64 in the future
    • New platform option, which defaults to n64
  • This will cause breaking changes in custom segments, so please refer to one of the changes in one of the n64 base segments for details
• Support for custom artifact paths
  • New undefined_syms_auto_path option
  • New undefined_funcs_auto_path option
  • New cache_path option
  • (All path-like options' names now end with _path)