Rekai Nyangadzayi Musuka
a3d53d40fb
feat(cpu): implement THUMB format 9 loads / stores
2022-10-21 05:12:06 -03:00
Rekai Nyangadzayi Musuka
a17dfbe41f
fix(cpu): resolve issues with unexpected PC value in THUMB
2022-10-21 05:12:06 -03:00
Rekai Nyangadzayi Musuka
b9a81baa47
feat(cpu): implement THUMB ldmia stmia
2022-10-21 05:12:06 -03:00
Rekai Nyangadzayi Musuka
97b236225e
chore: implement THUMB format 4 instructions
2022-10-21 05:12:05 -03:00
Rekai Nyangadzayi Musuka
8113146b86
chore: dedup code in THUMB instructions
2022-10-21 05:12:05 -03:00
Rekai Nyangadzayi Musuka
e6625113db
chore: refactor and genericize ARM data processing calculations
2022-10-21 05:12:05 -03:00
Rekai Nyangadzayi Musuka
2643504eb5
chore: relocate barrel_shifter zig file
2022-10-21 05:12:05 -03:00
Rekai Nyangadzayi Musuka
f7518d1bab
feat(cpu): implement format2 THUMB instructions
2022-10-21 05:12:05 -03:00
Rekai Nyangadzayi Musuka
800ca798cd
feat(cpu): implement format19 THUMB instructions
2022-10-21 05:12:05 -03:00
Rekai Nyangadzayi Musuka
d714ffb4f9
chore: account for THUMB BL instruction when mimicking mGBA logs
2022-10-21 05:12:04 -03:00
Rekai Nyangadzayi Musuka
7bc186a03c
feat(cpu): implement format16 THUMB instructions
2022-10-21 05:12:04 -03:00
Rekai Nyangadzayi Musuka
b94b87d186
feat(cpu): implement format 1 THUMB instructions
2022-10-21 05:12:04 -03:00
Rekai Nyangadzayi Musuka
0289be60ef
fix: dont close file handle early
2022-10-21 05:12:04 -03:00
Rekai Nyangadzayi Musuka
93922b65e3
feat(cpu): implement format 6 THUMB instructions
2022-10-21 05:12:04 -03:00
Rekai Nyangadzayi Musuka
c6608748c6
chore: rename title
2022-10-21 05:12:04 -03:00
Rekai Nyangadzayi Musuka
8e383d55d7
chore: refactor GBA Display Timings
...
This change should reflect that the Hblank bit of DISPSTAT is toggled on all scanlines
while also ensuring that the Vblank bit is set on all Vblank scanlines
2022-10-21 05:12:03 -03:00
Rekai Nyangadzayi Musuka
8926026b5b
chore: move a single statement lol
2022-10-21 05:12:03 -03:00
Rekai Nyangadzayi Musuka
464479b986
chore: mark indexing methods as inline
2022-10-21 05:12:03 -03:00
Rekai Nyangadzayi Musuka
de1c84914c
feat: create emulator thread
2022-10-21 05:12:03 -03:00
Rekai Nyangadzayi Musuka
8e7766e694
chore: disable logging by default
2022-10-21 05:12:03 -03:00
Rekai Nyangadzayi Musuka
4858dbc5dc
chore: revert fastboot changes
2022-10-21 05:12:03 -03:00
Rekai Nyangadzayi Musuka
c4e131b92d
chore: binary logging + file logging + DP chanes + fastBoot changes
2022-10-21 05:12:02 -03:00
Rekai Nyangadzayi Musuka
2e54be76d6
chore: rename skipBios to fastBoot
2022-10-21 05:12:02 -03:00
Rekai Nyangadzayi Musuka
7914268702
chore: set correct values for select banked registers on fast boot
2022-10-21 05:12:02 -03:00
Rekai Nyangadzayi Musuka
4bdb85834c
feat(cpu): implement SWI
2022-10-21 05:12:02 -03:00
Rekai Nyangadzayi Musuka
f89a37936f
chore(bios): allow reading from BIOS
2022-10-21 05:12:02 -03:00
Rekai Nyangadzayi Musuka
8bb7ea6be6
fix(cpu): interim solution to weird program counter behaviour on illegal tst instruction
2022-10-21 05:12:01 -03:00
Rekai Nyangadzayi Musuka
60a1f7fa99
chore(cpu): implement behaviour for undefined test instruction
2022-10-21 05:12:01 -03:00
Rekai Nyangadzayi Musuka
b3b8182f85
fix(cpu): fix PC offset when barrel shifter and bit 4 of DP is set
2022-10-21 05:12:01 -03:00
Rekai Nyangadzayi Musuka
56e660714c
fix(cpu): implement S set + rd == 15 case for data processing
2022-10-21 05:12:01 -03:00
Rekai Nyangadzayi Musuka
eb632056a2
feat(cpu): implement banked registers
2022-10-21 05:12:01 -03:00
Rekai Nyangadzayi Musuka
fbc9de0335
fix(cpu): improve MRS and MSR instructions
2022-10-21 05:12:01 -03:00
Rekai Nyangadzayi Musuka
5c7539cd26
feat(cpu): implement CMN
2022-10-21 05:12:00 -03:00
Rekai Nyangadzayi Musuka
7c20e5fdb5
fix(barrel_shifter): fix PC being 1 word ahead in barrel shifter
2022-10-21 05:12:00 -03:00
Rekai Nyangadzayi Musuka
f79e7126ee
feat(cpu): Implement RSC
2022-10-21 05:12:00 -03:00
Rekai Nyangadzayi Musuka
15e92bc6af
feat(cpu): implement RSB
2022-10-21 05:12:00 -03:00
Rekai Nyangadzayi Musuka
47fc96fe00
feat(cpu): implement BIC
2022-10-21 05:12:00 -03:00
Rekai Nyangadzayi Musuka
4ac5ad42c6
feat(cpu): implement EOR
2022-10-21 05:12:00 -03:00
Rekai Nyangadzayi Musuka
c93153672f
feat(cpu): implement ADD
2022-10-21 05:11:59 -03:00
Rekai Nyangadzayi Musuka
a46dd448f4
feat(cpu): implement fix for ADC and implement SBC
2022-10-21 05:11:59 -03:00
Rekai Nyangadzayi Musuka
01f75112ce
chore(barrel_shifter): remove panic from ASR
2022-10-21 05:11:59 -03:00
Rekai Nyangadzayi Musuka
051b98bc02
fix(barrel_shifter): should not modify cpsr when amount == 0
2022-10-21 05:11:59 -03:00
Rekai Nyangadzayi Musuka
5d0bc1b335
chore(cpu): refactor the barrel shifter once again
2022-10-21 05:11:59 -03:00
Rekai Nyangadzayi Musuka
43d011538e
feat(cpu): implement ADC
...
ADC interacting w/ the Barrel Shifter is not working though
2022-10-21 05:11:59 -03:00
Rekai Nyangadzayi Musuka
f3ad5e90ff
feat(cpu): implement RRX for Barrel Shifter
2022-10-21 05:11:58 -03:00
Rekai Nyangadzayi Musuka
9b867c02e0
feat(cpu): implement SUB in THUMB format 3
2022-10-21 05:11:58 -03:00
Rekai Nyangadzayi Musuka
2ba09868ba
feat(cpu): implement ARM SUB in data processing
2022-10-21 05:11:58 -03:00
Rekai Nyangadzayi Musuka
9394754593
feat(cpu): implement MVN
2022-10-21 05:11:58 -03:00
Rekai Nyangadzayi Musuka
41bab3d6ba
chore(cpu): refactor barrel shifter
2022-10-21 05:11:58 -03:00
Rekai Nyangadzayi Musuka
99b686b2d7
fix(cpu): use barrel shifter in data processing immediates
2022-10-21 05:11:58 -03:00
Rekai Nyangadzayi Musuka
daad98bbfe
feat(cpu): implement format 12 thumb instructions
2022-10-21 05:11:57 -03:00
Rekai Nyangadzayi Musuka
2fb01577af
feat(cpu): implement some already decoded format 3 instructions
2022-10-21 05:11:57 -03:00
Rekai Nyangadzayi Musuka
96d21f27a5
feat(cpu): implement THUMB format 5 instructions
2022-10-21 05:11:57 -03:00
Rekai Nyangadzayi Musuka
793110f315
chore: mgba log now supports printing THUMB instructions
2022-10-21 05:11:57 -03:00
Rekai Nyangadzayi Musuka
5ed5c5d52d
feat(cpu): implement like 1 THUMB instruction
2022-10-21 05:11:57 -03:00
Rekai Nyangadzayi Musuka
01385ee46b
chore: distinguish between undefined ARM and THUMB instr
2022-10-21 05:11:57 -03:00
Rekai Nyangadzayi Musuka
0eba3aca1f
chore(cpu): lay groundwork for THUMB instruction decoding and execution
2022-10-21 05:11:57 -03:00
Rekai Nyangadzayi Musuka
83a5370196
chore(cpu): refactor ARM functions to make room for THUMB
2022-10-21 05:11:56 -03:00
Rekai Nyangadzayi Musuka
b0b6247f06
fix(cpu): fix conditions for GT cond
2022-10-21 05:11:56 -03:00
Rekai Nyangadzayi Musuka
2a33716166
fix(cpu): fix imm value calculation in MSR
2022-10-21 05:11:56 -03:00
Rekai Nyangadzayi Musuka
9b26454c72
fix(cpu): resolve off-by-one error when executing LDM
2022-10-21 05:11:56 -03:00
Rekai Nyangadzayi Musuka
97b933d9ea
feat(cpu): implement branch and exchange
...
If I want to continue with armwrestler, I'll have to implement
THUMB instructions now
2022-10-21 05:11:56 -03:00
Rekai Nyangadzayi Musuka
ff70aadfdb
fix(cpu): make Data Processing instructions r15-aware
2022-10-21 05:11:55 -03:00
Rekai Nyangadzayi Musuka
ae53f92d40
fix(cpu): make LDRH and STRH aware of r15
2022-10-21 05:11:55 -03:00
Rekai Nyangadzayi Musuka
f51e1d3154
fix(cpu): account for r15 in LDR and STR instructions
2022-10-21 05:11:55 -03:00
Rekai Nyangadzayi Musuka
a21f94569f
fix(cpu): flip two branches in PSR Transfer execution
2022-10-21 05:11:55 -03:00
Rekai Nyangadzayi Musuka
b9255bffe7
feat(cpu): implement MSR and MRS
2022-10-21 05:11:55 -03:00
Rekai Nyangadzayi Musuka
e1f8400343
feat(cpu): stub PSR Transfer instructions
2022-10-21 05:11:55 -03:00
Rekai Nyangadzayi Musuka
52493831cc
chore(io): implement IE and IME
2022-10-21 05:11:54 -03:00
Rekai Nyangadzayi Musuka
00ba7afac4
chore: remove some magic constants
2022-10-21 05:11:54 -03:00
Rekai Nyangadzayi Musuka
97e663febf
fix(bus): remove accidental recursion
2022-10-21 05:11:54 -03:00
Rekai Nyangadzayi Musuka
9a5959e46c
fix(cpu): write results of ORR to destination register
2022-10-21 05:11:54 -03:00
Rekai Nyangadzayi Musuka
780c717409
feat(cpu): implement TEQ
2022-10-21 05:11:53 -03:00
Rekai Nyangadzayi Musuka
34c6df344d
feat(cpu): Implement ORR
2022-10-21 05:11:53 -03:00
Rekai Nyangadzayi Musuka
670347d4a0
feat(bus): implement IWRAM and EWRAM
2022-10-21 05:11:53 -03:00
Rekai Nyangadzayi Musuka
e0c4b3b407
fix(ppu): properly access Mode 4 palette
2022-10-21 05:11:53 -03:00
Rekai Nyangadzayi Musuka
cffffab8ea
feat(cpu): refactor LDM/STM
2022-10-21 05:11:53 -03:00
Rekai Nyangadzayi Musuka
527bd2889e
feat(cpu): implement LDM/STM
2022-10-21 05:11:53 -03:00
Rekai Nyangadzayi Musuka
15dc4ce03a
chore(io): DISPSTAT bits 3 and 4 better match GBATEK documentation
2022-10-21 05:11:52 -03:00
Rekai Nyangadzayi Musuka
4f629227ab
fix(cpu): fix off-by-word bug in BL
2022-10-21 05:11:52 -03:00
Rekai Nyangadzayi Musuka
caa799853e
feat(bus): have VCOUNT be addressable on the bus
2022-10-21 05:11:52 -03:00
Rekai Nyangadzayi Musuka
3590215d33
feat(ppu): implement Mode 4
...
Implementation is not tested. Pending on LDM and STM so that I can
run beeg.gba
2022-10-21 05:11:52 -03:00
Rekai Nyangadzayi Musuka
d6aafc61bd
chore(io): rename some io bitfield fields
2022-10-21 05:11:52 -03:00
Rekai Nyangadzayi Musuka
357211a4cc
chore: remove premature inlines
2022-10-21 05:11:52 -03:00
Rekai Nyangadzayi Musuka
c4c4332485
chore: add FPS counter
2022-10-21 05:11:51 -03:00
Rekai Nyangadzayi Musuka
2cec8d9f70
chore: improve code clarity
2022-10-21 05:11:51 -03:00
Rekai Nyangadzayi Musuka
8348d7c4bc
feat(ppu): improve timings + implement BG mode 3 bitmap
2022-10-21 05:11:51 -03:00
Rekai Nyangadzayi Musuka
c33068d831
fix: allocate framebuf on heap
2022-10-21 05:11:51 -03:00
Rekai Nyangadzayi Musuka
f28b963f9d
chore: add code for heap alloc of white texture
2022-10-21 05:11:51 -03:00
Rekai Nyangadzayi Musuka
7fc77f993f
chore(gui): switch from RGBA8888 to BGR5555 to match BG Mode 3
2022-10-21 05:11:51 -03:00
Rekai Nyangadzayi Musuka
0e0b21d8c3
feat: draw white texture using SDL2
2022-10-21 05:11:50 -03:00
Rekai Nyangadzayi Musuka
f3ad0eb3aa
fix(ppu): deallocate palette RAM on cleanup
2022-10-21 05:11:50 -03:00
Rekai Nyangadzayi Musuka
036b861b05
chore: code cleanup
2022-10-21 05:11:50 -03:00
Rekai Nyangadzayi Musuka
880546468c
chore(bus): refactor bus.zig
2022-10-21 05:11:50 -03:00
Rekai Nyangadzayi Musuka
1a9c9ba4cb
chore: refactor instruction exec code
2022-10-21 05:11:50 -03:00
Rekai Nyangadzayi Musuka
a9e7140a88
chore(io): alias @This() to Self in io.zig
2022-10-21 05:11:50 -03:00
Rekai Nyangadzayi Musuka
808633deb7
chore: refactor bios.zig and pak.zig
2022-10-21 05:11:49 -03:00
Rekai Nyangadzayi Musuka
ee4fcd926b
fix: by convention deinit() should not take pointers to self
2022-10-21 05:11:49 -03:00
Rekai Nyangadzayi Musuka
9d1229fe0c
feat: implement PPU Timings in Scheduler
2022-10-21 05:11:49 -03:00
Rekai Nyangadzayi Musuka
d54c8df7b3
feat(sched): add HBlank and VBlank events to the scheduler
2022-10-21 05:11:49 -03:00
Rekai Nyangadzayi Musuka
d495f5b4c5
feat: implement S (when rd != 15) for several data processing instructions
2022-10-21 05:11:49 -03:00
Rekai Nyangadzayi Musuka
788bef188d
feat: implement dedicated Barrel Shifter SHL and SHR
2022-10-21 05:11:49 -03:00
Rekai Nyangadzayi Musuka
bff9be03cc
chore: stub TST
2022-10-21 05:11:48 -03:00
Rekai Nyangadzayi Musuka
44424e0687
chore: comment-out logging by default
2022-10-21 05:11:48 -03:00
Rekai Nyangadzayi Musuka
4b43dcd256
fix(cpu): improve LDR/STR write-back logic
2022-10-21 05:11:48 -03:00
Rekai Nyangadzayi Musuka
47805fb60c
feat(bus): implement Palette RAM and DISPSTAT
2022-10-21 05:11:48 -03:00
Rekai Nyangadzayi Musuka
abe2fc431e
fix(bus): restrict Game ROM and VRAM to a 16-bit bus
2022-10-21 05:11:48 -03:00
Rekai Nyangadzayi Musuka
46c694d95a
fix(cpu): properly implement SUB/CMP CSPSR carry bit condition
2022-10-21 05:11:48 -03:00
Rekai Nyangadzayi Musuka
faced77161
fix(cpu): resolve reversed if statement + write back on W = 0
2022-10-21 05:11:47 -03:00
Rekai Nyangadzayi Musuka
32f0b9d71c
chore: add mgba compatible (minus disasm) log function
2022-10-21 05:11:47 -03:00
Rekai Nyangadzayi Musuka
bbdcc0a8c2
chore: rename CPSR u32 from val to raw
2022-10-21 05:11:47 -03:00
Rekai Nyangadzayi Musuka
67bf975034
chore: remove print statements
2022-10-21 05:11:47 -03:00
Rekai Nyangadzayi Musuka
da7300a78c
chore: remove all memory leaks
2022-10-21 05:11:47 -03:00
Rekai Nyangadzayi Musuka
5c5179a553
feat(ppu): implement VRAM
2022-10-21 05:11:47 -03:00
Rekai Nyangadzayi Musuka
dcf78d0f76
fix(emu): prevent infinite loop when advancing scheduler
2022-10-21 05:11:46 -03:00
Rekai Nyangadzayi Musuka
4836ea3bcf
fix(io): fix DISPCNT is at wrong IO address
2022-10-21 05:11:46 -03:00
Rekai Nyangadzayi Musuka
182392bf1c
feat(cpu): properly implement STR STRH and STRB
2022-10-21 05:11:46 -03:00
Rekai Nyangadzayi Musuka
c6de540c8a
feat(cpu): implement skipBios method
2022-10-21 05:11:46 -03:00
Rekai Nyangadzayi Musuka
82fb5e7a93
chore: panic on read from BIOS
...
GBA Bios requires a lot of implemented features, so we're ignoring it
for now
2022-10-21 05:11:46 -03:00
Rekai Nyangadzayi Musuka
cbcc6282df
feat(bus): add Io Struct
...
Also, add more information to all panic messages
2022-10-21 05:11:46 -03:00
Rekai Nyangadzayi Musuka
614ac4a262
chore: rename consturctors to fit convention
2022-10-21 05:11:45 -03:00
Rekai Nyangadzayi Musuka
80d49e03d6
chore: move bitfield library to lib director
...
I'd presonally prefer to use a git submodule here but It doesn't quite
seem like git submodules are possible for individual files. I'll have to
check with FlorenceOS every once and a while to ensure that there are no
lingering soundness issues with the library.
Thanks to @N00byEdge for this wonderful library!
2022-10-21 05:11:45 -03:00
Rekai Nyangadzayi Musuka
7016fcdb79
chore: use bitfield library
2022-10-21 05:11:45 -03:00
Rekai Nyangadzayi Musuka
f030889d6c
feat(bus): emu is now able to read from user-provided BIOS
2022-10-21 05:11:45 -03:00
Rekai Nyangadzayi Musuka
d50aff30c9
feat(bus): implement Gameboy Advance MMIO
2022-10-21 05:11:45 -03:00
Rekai Nyangadzayi Musuka
5cbfae677a
feat: implement ROM CLI argument
2022-10-21 05:11:45 -03:00
Rekai Nyangadzayi Musuka
d660babecd
fix(cpu): purposely overflow when calculating PC during branch
2022-10-21 05:11:44 -03:00
Rekai Nyangadzayi Musuka
cb06c20864
feat(cpu): implement condition field behaviour
2022-10-21 05:11:44 -03:00
Rekai Nyangadzayi Musuka
c98e8d384a
chore: conform to zig style guides
2022-10-21 05:11:44 -03:00
Rekai Nyangadzayi Musuka
446eeba094
chore: run zig fmt
2022-10-21 05:11:44 -03:00
Rekai Nyangadzayi Musuka
e841bf44ca
chore(cpu): iron out some false assumptions
2022-10-21 05:11:44 -03:00
Rekai Nyangadzayi Musuka
1991bd8525
feat: implement LDR STR
2022-10-21 05:11:44 -03:00
Rekai Nyangadzayi Musuka
6c6d7d463d
chore: run zig fmt
2022-10-21 05:11:43 -03:00
Rekai Nyangadzayi Musuka
5b3b81e4dc
Initial Commit
2021-12-29 15:09:00 -06:00
