Rekai Nyangadzayi Musuka
dc6931639f
fix(cpu): don't ignore 11th bit of THUMB BL offset
2022-01-29 23:53:40 -04:00
Rekai Nyangadzayi Musuka
e18f10126e
feat(cpu): implement thumb push / pop and stub format 13 thumb instrs
2022-01-29 23:22:10 -04:00
Rekai Nyangadzayi Musuka
0598ba402d
feat(cpu): implement THUMB format 9 loads / stores
2022-01-29 22:34:40 -04:00
Rekai Nyangadzayi Musuka
b8a9aaee86
fix(cpu): resolve issues with unexpected PC value in THUMB
2022-01-29 22:07:36 -04:00
Rekai Nyangadzayi Musuka
00058f6094
feat(cpu): implement THUMB ldmia stmia
2022-01-29 21:10:14 -04:00
Rekai Nyangadzayi Musuka
2dde47318c
chore: implement THUMB format 4 instructions
2022-01-29 20:42:13 -04:00
Rekai Nyangadzayi Musuka
ae4023e51c
chore: dedup code in THUMB instructions
2022-01-29 20:05:27 -04:00
Rekai Nyangadzayi Musuka
bce067557f
chore: refactor and genericize ARM data processing calculations
2022-01-29 19:40:58 -04:00
Rekai Nyangadzayi Musuka
e0acabf050
chore: relocate barrel_shifter zig file
2022-01-29 18:52:16 -04:00
Rekai Nyangadzayi Musuka
599e068c7e
feat(cpu): implement format2 THUMB instructions
2022-01-29 18:46:27 -04:00
Rekai Nyangadzayi Musuka
4ca65caef0
feat(cpu): implement format19 THUMB instructions
2022-01-29 18:25:50 -04:00
Rekai Nyangadzayi Musuka
0c49bf2288
chore: account for THUMB BL instruction when mimicking mGBA logs
2022-01-29 18:14:00 -04:00
Rekai Nyangadzayi Musuka
44dbdba48c
feat(cpu): implement format16 THUMB instructions
2022-01-29 17:44:04 -04:00
Rekai Nyangadzayi Musuka
d85e0c8d05
feat(cpu): implement format 1 THUMB instructions
2022-01-29 17:29:30 -04:00
Rekai Nyangadzayi Musuka
995633e9e8
fix: dont close file handle early
2022-01-29 01:18:45 -04:00
Rekai Nyangadzayi Musuka
cfbd292edc
feat(cpu): implement format 6 THUMB instructions
2022-01-29 01:18:41 -04:00
Rekai Nyangadzayi Musuka
95efb3f35d
chore: rename title
2022-01-28 23:27:03 -04:00
Rekai Nyangadzayi Musuka
6a6dccf4d8
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
2022-01-28 22:58:19 -04:00
Rekai Nyangadzayi Musuka
ad1db4dc2e
chore: move a single statement lol
2022-01-28 22:57:48 -04:00
Rekai Nyangadzayi Musuka
19359f7ee4
chore: mark indexing methods as inline
2022-01-28 17:11:29 -04:00
Rekai Nyangadzayi Musuka
24f0922f86
feat: create emulator thread
2022-01-28 16:33:38 -04:00
Rekai Nyangadzayi Musuka
b1cc985230
chore: disable logging by default
2022-01-25 18:20:30 -04:00
Rekai Nyangadzayi Musuka
e5c8f0ce07
chore: revert fastboot changes
2022-01-25 18:20:01 -04:00
Rekai Nyangadzayi Musuka
fbc5b309b0
chore: binary logging + file logging + DP chanes + fastBoot changes
2022-01-25 18:18:52 -04:00
Rekai Nyangadzayi Musuka
540fbf739a
chore: rename skipBios to fastBoot
2022-01-25 11:15:17 -04:00
Rekai Nyangadzayi Musuka
0546b1c308
chore: set correct values for select banked registers on fast boot
2022-01-25 11:14:15 -04:00
Rekai Nyangadzayi Musuka
997dc1314c
feat(cpu): implement SWI
2022-01-25 10:34:21 -04:00
Rekai Nyangadzayi Musuka
1456d0f317
chore(bios): allow reading from BIOS
2022-01-25 10:32:28 -04:00
Rekai Nyangadzayi Musuka
6257418405
fix(cpu): interim solution to weird program counter behaviour on illegal tst instruction
2022-01-25 09:23:32 -04:00
Rekai Nyangadzayi Musuka
985fefb9f6
chore(cpu): implement behaviour for undefined test instruction
2022-01-25 08:05:42 -04:00
Rekai Nyangadzayi Musuka
95dd3e3df8
fix(cpu): fix PC offset when barrel shifter and bit 4 of DP is set
2022-01-24 17:52:01 -04:00
Rekai Nyangadzayi Musuka
702ff288d8
fix(cpu): implement S set + rd == 15 case for data processing
2022-01-19 07:46:49 -04:00
Rekai Nyangadzayi Musuka
bf36a23722
feat(cpu): implement banked registers
2022-01-19 07:29:49 -04:00
Rekai Nyangadzayi Musuka
fc5a3460dd
fix(cpu): improve MRS and MSR instructions
2022-01-18 20:17:00 -04:00
Rekai Nyangadzayi Musuka
6177927049
feat(cpu): implement CMN
2022-01-18 15:09:25 -04:00
Rekai Nyangadzayi Musuka
903b75c7c4
fix(barrel_shifter): fix PC being 1 word ahead in barrel shifter
2022-01-18 15:08:29 -04:00
Rekai Nyangadzayi Musuka
8d786cbe25
feat(cpu): Implement RSC
2022-01-18 14:46:57 -04:00
Rekai Nyangadzayi Musuka
212bc9e11d
feat(cpu): implement RSB
2022-01-18 14:36:03 -04:00
Rekai Nyangadzayi Musuka
63a57ac954
feat(cpu): implement BIC
2022-01-18 14:28:47 -04:00
Rekai Nyangadzayi Musuka
85dae5e1d7
feat(cpu): implement EOR
2022-01-18 14:27:07 -04:00
Rekai Nyangadzayi Musuka
6189bf0315
feat(cpu): implement ADD
2022-01-18 14:25:29 -04:00
Rekai Nyangadzayi Musuka
2f3213f693
feat(cpu): implement fix for ADC and implement SBC
2022-01-18 14:20:01 -04:00
Rekai Nyangadzayi Musuka
a62cd9aa40
chore(barrel_shifter): remove panic from ASR
2022-01-18 14:19:58 -04:00
Rekai Nyangadzayi Musuka
25c57a4cc7
fix(barrel_shifter): should not modify cpsr when amount == 0
2022-01-18 13:30:41 -04:00
Rekai Nyangadzayi Musuka
a7a44c4463
chore(cpu): refactor the barrel shifter once again
2022-01-17 15:55:55 -04:00
Rekai Nyangadzayi Musuka
d4d2fedfbe
feat(cpu): implement ADC
...
ADC interacting w/ the Barrel Shifter is not working though
2022-01-17 14:29:34 -04:00
Rekai Nyangadzayi Musuka
483e149b32
feat(cpu): implement RRX for Barrel Shifter
2022-01-17 14:19:40 -04:00
Rekai Nyangadzayi Musuka
85ffdf44f5
feat(cpu): implement SUB in THUMB format 3
2022-01-17 11:36:02 -04:00
Rekai Nyangadzayi Musuka
9098a55ae3
feat(cpu): implement ARM SUB in data processing
2022-01-17 11:35:41 -04:00
Rekai Nyangadzayi Musuka
c0d956ea95
feat(cpu): implement MVN
2022-01-17 11:30:59 -04:00
Rekai Nyangadzayi Musuka
1025500407
chore(cpu): refactor barrel shifter
2022-01-17 11:17:04 -04:00
Rekai Nyangadzayi Musuka
d05a924420
fix(cpu): use barrel shifter in data processing immediates
2022-01-17 11:02:34 -04:00
Rekai Nyangadzayi Musuka
2a416fb2c6
feat(cpu): implement format 12 thumb instructions
2022-01-17 10:07:50 -04:00
Rekai Nyangadzayi Musuka
ea5f0ce552
feat(cpu): implement some already decoded format 3 instructions
2022-01-17 09:29:11 -04:00
Rekai Nyangadzayi Musuka
e55d2dc323
feat(cpu): implement THUMB format 5 instructions
2022-01-17 09:28:46 -04:00
Rekai Nyangadzayi Musuka
3037407ebe
chore: mgba log now supports printing THUMB instructions
2022-01-17 07:18:44 -04:00
Rekai Nyangadzayi Musuka
1915d98bdd
feat(cpu): implement like 1 THUMB instruction
2022-01-16 12:46:59 -04:00
Rekai Nyangadzayi Musuka
4606a1ab25
chore: distinguish between undefined ARM and THUMB instr
2022-01-14 05:30:32 -04:00
Rekai Nyangadzayi Musuka
0cf052838d
chore(cpu): lay groundwork for THUMB instruction decoding and execution
2022-01-14 05:23:16 -04:00
Rekai Nyangadzayi Musuka
ae37b1218b
chore(cpu): refactor ARM functions to make room for THUMB
2022-01-14 04:26:09 -04:00
Rekai Nyangadzayi Musuka
070322064d
fix(cpu): fix conditions for GT cond
2022-01-14 04:19:54 -04:00
Rekai Nyangadzayi Musuka
37bd6758fb
fix(cpu): fix imm value calculation in MSR
2022-01-14 04:08:04 -04:00
Rekai Nyangadzayi Musuka
7f6ab626d9
fix(cpu): resolve off-by-one error when executing LDM
2022-01-14 03:43:03 -04:00
Rekai Nyangadzayi Musuka
77dba68a0b
feat(cpu): implement branch and exchange
...
If I want to continue with armwrestler, I'll have to implement
THUMB instructions now
2022-01-12 07:20:24 -04:00
Rekai Nyangadzayi Musuka
7adc7c8802
fix(cpu): make Data Processing instructions r15-aware
2022-01-12 07:20:24 -04:00
Rekai Nyangadzayi Musuka
229f7c3388
fix(cpu): make LDRH and STRH aware of r15
2022-01-12 07:20:21 -04:00
Rekai Nyangadzayi Musuka
5812b9713c
fix(cpu): account for r15 in LDR and STR instructions
2022-01-12 06:16:59 -04:00
Rekai Nyangadzayi Musuka
98c5803208
fix(cpu): flip two branches in PSR Transfer execution
2022-01-12 06:16:34 -04:00
Rekai Nyangadzayi Musuka
74abd3df4d
feat(cpu): implement MSR and MRS
2022-01-12 04:48:57 -04:00
Rekai Nyangadzayi Musuka
7531af7f2b
feat(cpu): stub PSR Transfer instructions
2022-01-12 03:40:51 -04:00
Rekai Nyangadzayi Musuka
1c173eb4b8
chore(io): implement IE and IME
2022-01-12 02:19:26 -04:00
Rekai Nyangadzayi Musuka
769c67b9d4
chore: remove some magic constants
2022-01-12 00:46:20 -04:00
Rekai Nyangadzayi Musuka
c1be53bcb2
fix(bus): remove accidental recursion
2022-01-10 21:25:45 -04:00
Rekai Nyangadzayi Musuka
072a66cfdb
fix(cpu): write results of ORR to destination register
2022-01-10 10:56:41 -04:00
Rekai Nyangadzayi Musuka
ed3bdd90fb
feat(cpu): implement TEQ
2022-01-10 08:09:02 -04:00
Rekai Nyangadzayi Musuka
e9c1c94cae
feat(cpu): Implement ORR
2022-01-10 08:06:00 -04:00
Rekai Nyangadzayi Musuka
0f08ad05be
feat(bus): implement IWRAM and EWRAM
2022-01-10 07:59:21 -04:00
Rekai Nyangadzayi Musuka
fd5006b29d
fix(ppu): properly access Mode 4 palette
2022-01-10 07:23:54 -04:00
Rekai Nyangadzayi Musuka
22b95b2a74
feat(cpu): refactor LDM/STM
2022-01-10 06:51:32 -04:00
Rekai Nyangadzayi Musuka
7d79a0bee2
feat(cpu): implement LDM/STM
2022-01-10 06:27:36 -04:00
Rekai Nyangadzayi Musuka
6c0651ca08
chore(io): DISPSTAT bits 3 and 4 better match GBATEK documentation
2022-01-10 06:26:42 -04:00
Rekai Nyangadzayi Musuka
0d8c5e6882
fix(cpu): fix off-by-word bug in BL
2022-01-10 06:26:02 -04:00
Rekai Nyangadzayi Musuka
89a8fe403b
feat(bus): have VCOUNT be addressable on the bus
2022-01-10 03:35:28 -04:00
Rekai Nyangadzayi Musuka
7c5d2d2389
feat(ppu): implement Mode 4
...
Implementation is not tested. Pending on LDM and STM so that I can
run beeg.gba
2022-01-10 03:35:24 -04:00
Rekai Nyangadzayi Musuka
2467b94dbd
chore(io): rename some io bitfield fields
2022-01-10 02:13:25 -04:00
Rekai Nyangadzayi Musuka
0d4c850218
chore: remove premature inlines
2022-01-10 01:24:14 -04:00
Rekai Nyangadzayi Musuka
bbe2ecfa53
chore: add FPS counter
2022-01-10 01:22:55 -04:00
Rekai Nyangadzayi Musuka
c54145ce3c
chore: improve code clarity
2022-01-09 23:34:33 -04:00
Rekai Nyangadzayi Musuka
ead6d1ce49
feat(ppu): improve timings + implement BG mode 3 bitmap
2022-01-09 22:16:34 -04:00
Rekai Nyangadzayi Musuka
581285a434
fix: allocate framebuf on heap
2022-01-08 20:30:57 -04:00
Rekai Nyangadzayi Musuka
0d203543ca
chore: add code for heap alloc of white texture
2022-01-08 18:52:11 -04:00
Rekai Nyangadzayi Musuka
eb6c00f0ac
chore(gui): switch from RGBA8888 to BGR5555 to match BG Mode 3
2022-01-08 04:54:39 -04:00
Rekai Nyangadzayi Musuka
da7f21f47e
feat: draw white texture using SDL2
2022-01-07 22:46:17 -04:00
Rekai Nyangadzayi Musuka
8fb666624f
fix(ppu): deallocate palette RAM on cleanup
2022-01-07 22:27:08 -04:00
Rekai Nyangadzayi Musuka
568c374131
chore: code cleanup
2022-01-07 20:00:42 -04:00
Rekai Nyangadzayi Musuka
910745f442
chore(bus): refactor bus.zig
2022-01-07 19:49:58 -04:00
Rekai Nyangadzayi Musuka
f8c6af3247
chore: refactor instruction exec code
2022-01-07 19:44:48 -04:00
Rekai Nyangadzayi Musuka
a407671de2
chore(io): alias @This() to Self in io.zig
2022-01-07 19:34:54 -04:00
Rekai Nyangadzayi Musuka
e9ec124e33
chore: refactor bios.zig and pak.zig
2022-01-07 19:33:49 -04:00
Rekai Nyangadzayi Musuka
9f64804763
fix: by convention deinit() should not take pointers to self
2022-01-07 19:16:23 -04:00
Rekai Nyangadzayi Musuka
c6123d8a6d
feat: implement PPU Timings in Scheduler
2022-01-05 21:18:33 -04:00
Rekai Nyangadzayi Musuka
f709458638
feat(sched): add HBlank and VBlank events to the scheduler
2022-01-05 17:34:59 -05:00
Rekai Nyangadzayi Musuka
5037b8f0cc
feat: implement S (when rd != 15) for several data processing instructions
2022-01-05 15:45:52 -05:00
Rekai Nyangadzayi Musuka
28a70d0112
feat: implement dedicated Barrel Shifter SHL and SHR
2022-01-05 13:58:11 -05:00
Rekai Nyangadzayi Musuka
7473ffedc7
chore: stub TST
2022-01-04 04:08:02 -06:00
Rekai Nyangadzayi Musuka
172f3e8efe
chore: comment-out logging by default
2022-01-04 03:58:11 -06:00
Rekai Nyangadzayi Musuka
28bb410dfd
fix(cpu): improve LDR/STR write-back logic
2022-01-04 03:55:41 -06:00
Rekai Nyangadzayi Musuka
5ea888f68c
feat(bus): implement Palette RAM and DISPSTAT
2022-01-04 03:29:56 -06:00
Rekai Nyangadzayi Musuka
8b9a80b279
fix(bus): restrict Game ROM and VRAM to a 16-bit bus
2022-01-04 03:08:12 -06:00
Rekai Nyangadzayi Musuka
ed9c1413b1
fix(cpu): properly implement SUB/CMP CSPSR carry bit condition
2022-01-04 03:08:08 -06:00
Rekai Nyangadzayi Musuka
8cabcd8901
fix(cpu): resolve reversed if statement + write back on W = 0
2022-01-04 01:57:37 -06:00
Rekai Nyangadzayi Musuka
8d8cedea59
chore: add mgba compatible (minus disasm) log function
2022-01-04 01:11:53 -06:00
Rekai Nyangadzayi Musuka
0f827fca96
chore: rename CPSR u32 from val to raw
2022-01-03 22:25:11 -06:00
Rekai Nyangadzayi Musuka
1fefd4de5c
chore: remove print statements
2022-01-03 21:30:08 -06:00
Rekai Nyangadzayi Musuka
3aa680ab8c
chore: remove all memory leaks
2022-01-03 20:08:55 -06:00
Rekai Nyangadzayi Musuka
8257a3899a
feat(ppu): implement VRAM
2022-01-03 19:52:10 -06:00
Rekai Nyangadzayi Musuka
1d4ba2e2b3
fix(emu): prevent infinite loop when advancing scheduler
2022-01-03 19:51:55 -06:00
Rekai Nyangadzayi Musuka
c9f0e1632c
fix(io): fix DISPCNT is at wrong IO address
2022-01-03 17:49:15 -06:00
Rekai Nyangadzayi Musuka
44d52d8137
feat(cpu): properly implement STR STRH and STRB
2022-01-03 17:48:43 -06:00
Rekai Nyangadzayi Musuka
dee0e113d8
feat(cpu): implement skipBios method
2022-01-02 14:58:39 -06:00
Rekai Nyangadzayi Musuka
eb37d73cb2
chore: panic on read from BIOS
...
GBA Bios requires a lot of implemented features, so we're ignoring it
for now
2022-01-02 14:57:59 -06:00
Rekai Nyangadzayi Musuka
1c42d1795a
feat(bus): add Io Struct
...
Also, add more information to all panic messages
2022-01-02 14:40:49 -06:00
Rekai Nyangadzayi Musuka
01d6399dfb
chore: rename consturctors to fit convention
2022-01-02 13:58:57 -06:00
Rekai Nyangadzayi Musuka
f09f814dc3
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!
2022-01-02 13:19:09 -06:00
Rekai Nyangadzayi Musuka
de9045fba3
chore: use bitfield library
2022-01-02 13:01:11 -06:00
Rekai Nyangadzayi Musuka
e144261e07
feat(bus): emu is now able to read from user-provided BIOS
2022-01-02 03:16:03 -06:00
Rekai Nyangadzayi Musuka
65c3dd722c
feat(bus): implement Gameboy Advance MMIO
2022-01-02 02:36:06 -06:00
Rekai Nyangadzayi Musuka
b63eb2dabc
feat: implement ROM CLI argument
2022-01-01 23:37:21 -06:00
Rekai Nyangadzayi Musuka
52e367d24a
fix(cpu): purposely overflow when calculating PC during branch
2022-01-01 21:57:52 -06:00
Rekai Nyangadzayi Musuka
cc7e42efd8
feat(cpu): implement condition field behaviour
2022-01-01 21:56:58 -06:00
Rekai Nyangadzayi Musuka
c40a1af534
chore: conform to zig style guides
2022-01-01 21:08:47 -06:00
Rekai Nyangadzayi Musuka
f2cc0721c7
chore: run zig fmt
2022-01-01 03:42:20 -06:00
Rekai Nyangadzayi Musuka
92a06e49c3
chore(cpu): iron out some false assumptions
2022-01-01 03:41:50 -06:00
Rekai Nyangadzayi Musuka
c660ca8922
feat: implement LDR STR
2021-12-29 17:16:32 -06:00
Rekai Nyangadzayi Musuka
7cc3f40a85
chore: run zig fmt
2021-12-29 15:13:50 -06:00
Rekai Nyangadzayi Musuka
5b3b81e4dc
Initial Commit
2021-12-29 15:09:00 -06:00
