dingusdev
ec23a532f6
Minor clean-up for branching instructions
2024-02-12 20:59:04 -07:00
joevt
d0b0b8070c
ppcopcodes: Fix l*ux? invalid form check.
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Invalid form is (reg_a == reg_d) || reg_a == 0.
Therefore, valid form is (reg_a != reg_d) && reg_a != 0
!(a || b) == !a && !b
2024-02-11 07:41:13 -07:00
joevt
fd81d7b040
ppcfpopcodes: Fix load float.
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Type casting an int to a float assigns the value of the int to the float which is not what is needed here.
2024-02-11 07:40:17 -07:00
joevt
267a9448ea
ppctest: Fix floating-point tests.
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genppctests.py
- Fix incorrect bits for some floating-point instruction opcodes or fields.
- Use separate register for FP results like DolphinPPCTests does.
- Remove extra FMULS.
- Use a regular expression for parsing ppcfloattest.txt. Don't parse the values, just put them in the output ppcloattests.csv file.
ppcfloattest.txt
- Clear crf0 and crf7 because we only care about crf1.
- Use values from DolphinPPCTests (0.0, 0.5, 1.0, 3.5, DBL_MAX, FLT_MAX, 2.4679999352, 4.9359998704, etc.). Some of the values were rounded. This will un-round them. Specify snan or qnan instead of nan.
- One of the FCMPO and FCMPU tests had qnan instead of snan input values.
ppcfloattest.csv
- Regenerate this file using the updated genppctests.py which uses the updated ppcfloattest.txt.
ppctests
- Update double_from_string to be able to parse the new values (snan, qnan, FLT_MAX, DBL_MAX).
2024-02-10 14:56:21 -07:00
joevt
01e45d656e
ppcfpopcodes: Update header date.
2024-02-10 14:47:46 -07:00
joevt
9199b1e520
ppcfpopcodes: Fix multiply add opcodes.
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Use std::fma for all of them for max accuracy.
For single precision opcodes, convert only the result, not the operands.
2024-02-10 14:19:09 -07:00
joevt
3be22dac99
ppcfpopcodes: No float cast for operand check.
2024-02-10 14:18:49 -07:00
joevt
ff895aa8a4
ppcfpopcodes: Remove some globals.
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ppc_result64_d and ppc_dblresult64_d don't need to be globals. The rest are unused.
2024-02-10 13:56:07 -07:00
joevt
c9c4280e6e
ppcfpopcodes: No float cast for operand check.
2024-02-10 13:02:49 -07:00
joevt
dac9c1e52c
ppcfpopcodes: Fix fctiw* round to nearest.
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0.3 should not round up to 1.
2024-02-10 12:58:58 -07:00
joevt
a7e6ab33a1
ppcfpopcodes: Make fctiw* results QNaN.
2024-02-10 12:58:29 -07:00
joevt
6c49b87a06
ppcopcodes: Fix rlwnm when shift > 31.
2024-02-10 12:54:41 -07:00
joevt
29e5bbdcc0
ppcopcodes: Fix divw.
2024-02-10 12:54:12 -07:00
joevt
4fcb357e2f
ppcfpopcodes: add 601 variant of mffs.
2024-02-10 12:51:48 -07:00
joevt
ddb5259464
ppcexec: Make illegal operations per CPU model.
2024-02-10 12:51:00 -07:00
dingusdev
52dfc0cf93
Slightly faster typecasting
2024-01-31 08:06:33 -07:00
joevt
bf425884fb
ppcopcodes: Add ppc_grab_dab.
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For instructions that don't use the general purpose registers.
2024-01-19 12:09:24 +01:00
joevt
4430fd89a9
ppcopcodes: Fix subfic.
2024-01-19 12:00:55 +01:00
dingusdev
a0b1d6394a
Another revert
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This affects Virtus VR - With the lmw checks, the opening sign doesn't display and the intro crashes sooner
2024-01-07 17:45:05 -07:00
dingusdev
c6af1e31fe
Partial revert of previous commit
2024-01-07 17:21:11 -07:00
dingusdev
a5ce6a806f
CPU clean-up
2024-01-07 17:04:51 -07:00
dingusdev
a59475af1c
Further lha(*) fixes
2024-01-05 19:10:05 -07:00
dingusdev
1cc1ac2e68
Fixing lha(*) opcodes
2024-01-05 17:19:03 -07:00
dingusdev
924b80574a
Further fix from last commit
2024-01-05 15:53:56 -07:00
dingusdev
f3a759c80d
CPU code clean-up
2024-01-05 15:11:37 -07:00
Maxim Poliakovski
9b30dfb474
ppcfpopcodes: refactor fctiw/fctiwz emulation.
2024-01-03 01:27:21 +01:00
joevt
0100e67ebf
ppcfpopcodes: Fix fctiw/fctiwz.
2024-01-03 01:07:53 +01:00
joevt
bd419912b5
ppcfpopcodes: Fix stfs*.
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It should try to convert its operand to a single precision
floating point number at least.
2024-01-02 21:53:03 +01:00
Maxim Poliakovski
cb85d358d1
Remove unused globals.
2024-01-02 17:51:12 +01:00
Maxim Poliakovski
5b114c2412
ppcopcodes: refactor mtcrf emulation.
2024-01-02 17:44:35 +01:00
Maxim Poliakovski
c25b027de4
ppcfpopcodes: fix mtfsf emulation.
2024-01-02 17:21:08 +01:00
Maxim Poliakovski
8595dd7d99
ppcfpopcodes: fix mtfsfi emulation.
2024-01-02 17:21:08 +01:00
joevt
61a90e2cfb
ppcfpopcodes: Fix mcrfs.
2024-01-02 15:52:30 +01:00
Maxim Poliakovski
593508df22
Refactor subfze.
2024-01-02 13:44:56 +01:00
joevt
1f3505f371
ppcopcodes: Fix subfze.
2024-01-02 13:44:13 +01:00
Maxim Poliakovski
fef5bde0c7
Refactor recent subfme fix.
2023-12-24 02:56:47 +01:00
joevt
dc00879419
ppcopcodes: Fix subfme.
2023-12-24 02:36:34 +01:00
joevt
bae488fd97
ppcfpopcodes: Fix lfs* opcodes.
2023-12-22 13:11:13 +01:00
joevt
0a8c1df968
ppcopcodes: Fix sraw.
2023-12-19 16:30:02 +01:00
joevt
4c49558120
ppcopcodes: Fix subfe.
2023-12-19 14:57:41 +01:00
Maxim Poliakovski
750f91e339
ppcemu.h: add enum for XER bits.
2023-12-19 14:57:41 +01:00
Maxim Poliakovski
d24b5d21b8
CRx_bit enum stores masks for now.
2023-12-19 14:27:57 +01:00
Maxim Poliakovski
9dbfde1a4c
Cleanup previous commit.
2023-12-19 13:15:10 +01:00
joevt
7f229b0fe8
ppcfpopcodes: Fix fcmpo/fcmpu.
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It was always changing CR1 (starting at CR bit 4) instead of the CR selected by crfD.
Also, it was clearing all but the FL,FG,FE,FU bits of FPRF of FPSCR.
2023-12-19 13:15:10 +01:00
dingusdev
7cf3d9cd94
Merge pull request #72 from mihaip/upstream-ub
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Avoid some undefined behavior
2023-12-08 06:45:44 -07:00
joevt
c28e1fa0be
ppcmmu: Fix write accesses to read-only memory.
2023-12-08 11:15:04 +01:00
Mihai Parparita
e9bc8926ab
Avoid some undefined behavior
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The `SubOpcode31Grabber[1024] = { ppc_illegalop }` initializer only
populates the first entry with ppc_illegalop (at least on some compilers),
switch to explicitly initializing the entire array with std::fill_n.
Also fix a couple of sign and overflow issues flagged by the Xcode
undefined behavior sanitizer.
2023-12-07 23:59:49 -08:00
Maxim Poliakovski
99ae0c3d31
ppcemu.h: add PVR definition for MPC604e.
2023-12-03 20:05:19 +01:00
Mihai Parparita
6582536591
Inline ppc_set_cur_instruction
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It's used in the main emulator loop (ppc_exec_inner), and the function
call overhead adds up.
By inlining it, time to boot to the Finder using a 7.1.2 install CD
and a 6100 ROM goes from ~6700ms to ~6400ms (with clang 14 on a
M2 Max)
2023-12-02 15:12:02 -08:00
Maxim Poliakovski
819d475181
poweropcodes: fix div emulation.
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Clean up power_doz and power_maskir as well.
2023-12-01 20:41:22 +01:00
