Macintosh-Tools/dingusppc
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160 Commits

Author SHA1 Message Date
dingusdev
1ed6e25d1b Removed redundant variable 
Slight clean-up for lswi and lswx
 2022-11-12 20:16:29 -07:00
joevt
6f0d3b48ba Fix TBR range 
Fixed an issue where TBR doesn't have full 64-bit range. The original calculation was 64 bit and ended with a ÷ 10^9. This means the max for the upper 32 bits is 2^32/10^9 = 4. The solution is to use a multiplication method that supports a 96 bit product. core/mathutils.h contains functions for that. TBR driving frequency is assumed to be less than 1 GHz. Some minor modification is required for future > 1 GHz support.
 2022-09-15 21:22:37 -07:00
joevt
b665f2cb4e Fix RTC units 
Fixed an issue where get-msecs-601 and get-msecs-60x were not returning the same value. RTC was being calculated using timebase frequency instead of nanosecond frequency. 601 uses RTC. 60x uses TBR. On a real Mac, a G3 CPU won't have a RTC and accessing RTC would cause an exception. This is not the case for dingusppc but I don't think that's a problem.
 2022-09-15 21:05:08 -07:00
joevt
ed424ad544 Fix setting RTC 
Fixed an issue where setting RTC upper or lower doesn't adjust the other (since the current time has changed since the last timestamp).
 2022-09-15 20:59:56 -07:00
joevt
50dbd5eccd Fix RTC not always updating 
Fixed an issue where RTC was not being updated if only the upper 32 bits (seconds) was read.
Also simplified things by always updating the timestamp instead of only when the seconds changes.
 2022-09-15 20:54:22 -07:00
joevt
01d7d6bac3 Make accessing RTC or TBR not affect the other 
Fixed an issue where the following would cause inconsistent results (tb in the left column would sometimes decrement instead of always incrementing):
2 0 do 2 0 do cr tb@ 8 u.r ." ." 8 u.r loop 2 0 do cr 12 spaces rtc@ 8 u.r ." ." 8 u.r loop 2 0 do cr tb@ 8 u.r ." ." 8 u.r space rtc@ 8 u.r ." ." 8 u.r loop loop

RTC and TBR could not be used simultaneously because they are both incremented by an amount based on the last time stamp but that time stamp can be changed by accessing either RTC or TBR. The solution is to have a different time stamp for each.
 2022-09-15 20:21:54 -07:00
joevt
ce925f5e56 Fix RTC upper 
Fixed a typo that caused rtc@ to always return 0 for the upper 32 bits (represents seconds).
The problem could cause the following to hang on Power Mac 7500:
cr 2000 0 do get-msecs u. 1 ms loop
 2022-09-15 19:34:46 -07:00
Maxim Poliakovski
b38d00ce2d cpu/ppc: improve support for external interrupts. 
Support generating of external interrupt exception
in MTMSR and RFI when MSR[EE] is re-enabled and
external interrupt still pending.
 2022-08-24 14:15:47 +02:00
joevt
b76bfedf4b Remove unnecessary linefeeds from log 
To remove blank lines in the dingusppc.log file or in the console output when -d is used.
 2022-08-14 05:26:56 -07:00
Maxim Poliakovski
0c77cccb9e ppcopcodes: fix mcrf (again). 2022-05-21 14:51:28 +02:00
Maxim Poliakovski
b47de8b042 Implement MPC601 style RTC. 2022-05-21 14:51:27 +02:00
Maxim Poliakovski
646880cbf2 Interpreter loop is now controlled by exec_flags. 2022-03-02 16:55:20 +01:00
Maxim Poliakovski
123f820775 ppcopcodes: fix lswi/stswi emulation. 2022-02-19 23:23:24 +01:00
Maxim Poliakovski
477ad7ddee ppcopcodes: fix lswx/stswx emulation. 2022-02-19 23:23:24 +01:00
dingusdev
3258abe190 crnand and crnor fixes 2022-01-22 22:33:13 -07:00
Maxim Poliakovski
c8d39d5ee5 ppcopcodes: fix creqv emulation. 2022-01-21 16:32:07 +01:00
Maxim Poliakovski
2442bd17b3 ppcopcodes: fix crand emulation. 2022-01-21 14:56:10 +01:00
Maxim Poliakovski
c864b9b7d9 ppcopcodes: fix cror emulation. 2022-01-21 14:37:51 +01:00
Maxim Poliakovski
e1e651966e Revert "Further condition reg opcode patches" 
This reverts commit 756d32df07.
 2022-01-10 18:10:39 +01:00
Maxim Poliakovski
c12bab9e27 Revert "Quick fix for creqv" 
This reverts commit 8efc61e1b9.
 2022-01-10 18:01:48 +01:00
Maxim Poliakovski
339db4a078 Add timers management. 2022-01-10 17:56:24 +01:00
dingusdev
8efc61e1b9 Quick fix for creqv 2022-01-08 15:22:27 -07:00
dingusdev
756d32df07
Further condition reg opcode patches 2022-01-07 20:40:07 -07:00
Maxim Poliakovski
9cd7ca0077 ppcopcodes: fix crxor. 2022-01-08 04:21:09 +01:00
Maxim Poliakovski
7bdad7703c Predict TBR values based on elapsed virtual time. 2021-12-20 00:12:44 +01:00
Maxim Poliakovski
c0cd6eb38f Add missing licence headers, update license date. 2021-10-23 21:00:31 +02:00
Maxim Poliakovski
e53296f7a9 Implement all required context-synchronizing events. 2021-10-13 20:58:09 +02:00
dingusdev
1922a20cdd Partial revert for exception handling 
This will be for a future update regarding 601 instructions
 2021-10-05 17:42:55 -07:00
dingusdev
f605c484dd ecowx and eciwx added 2021-10-05 17:40:09 -07:00
Maxim Poliakovski
69c357b70f ppcopcodes: fix compilation error with Clang 11. 2021-10-05 00:40:12 +02:00
Maxim Poliakovski
84e111290f Fix includes for loguru and SDL. 2021-09-16 00:46:38 +02:00
Maxim Poliakovski
9ce15be106 ppcmmu.c: restructure and clean up. 2021-08-22 21:33:59 +02:00
Maxim Poliakovski
089645e830 Implement SoftTLB for writes. 2021-08-22 17:34:23 +02:00
Maxim Poliakovski
4da95a66d7 Make emulated memory loads to use SoftTLB. 2021-06-20 22:33:10 +02:00
Maxim Poliakovski
7d8f4d4e61 Finalize SoftTLB for reads. 2021-05-16 22:00:00 +02:00
Maxim Poliakovski
a5ddb51a3b ppcmmu: initial TLB implementation for reads. 2021-05-16 00:53:15 +02:00
Maxim Poliakovski
6f9ee10de5 Rework PPC CPU profiler. 2021-04-29 02:26:17 +02:00
dingusdev
7f0acaf3d3 Load and store instruction clean-up 2021-01-25 21:03:17 -07:00
Maxim Poliakovski
fd0f8e2ef5 ppcopcodes: revert inlining of helper functions. 2021-01-24 22:50:07 +01:00
dingusdev
60f84ef0d9 Refactoring interpreter value storage 2021-01-24 11:59:16 -07:00
dingusdev
2539faef7e Small typo fixes 2021-01-23 15:10:08 -07:00
dingusdev
df8ea1b276 Code clean-up for interpreter 2021-01-08 14:34:01 -07:00
Maxim Poliakovski
358f018815 ppcopcodes: fix mcrf. 2021-01-08 21:59:18 +01:00
dingusdev
79e3d398ba mcrf implemented 2021-01-07 20:38:32 -07:00
Maxim Poliakovski
2f3938c23f ppcopcodes: fix dcbz. 2021-01-07 04:25:27 +01:00
Maxim Poliakovski
dbbaf13a78 ppcopcodes: fix cntlzw to compile properly with Clang. 
Enable USE_GCC_BUILTINS by default.
 2020-12-18 18:33:00 +01:00
Maxim Poliakovski
99641b1b5e ppcopcodes: fix cntlzw with __builtin_clz. 
The result of __builtin_clz is undefined when the source operand
is zero. Add a check for this case and handle it accordingly.
 2020-12-07 14:37:20 +01:00
Maxim Poliakovski
6c6247b94f Clean up program exceptions. 2020-11-30 20:59:36 +01:00
Maxim Poliakovski
acfa09af65 Illegal opcodes raise program exception. 2020-11-29 23:54:10 +01:00
dingusdev
1fe9ffe3e5 Further refactoring to clean up the interpreter 2020-10-17 21:46:38 -07:00
dingusdev
dc58386237 Started re-refactoring opcode retrieval 2020-10-17 14:30:37 -07:00
Maxim Poliakovski
39a643aff6 Merge branch 'machines' 
Also disable SDL for now because it produces build errors.
 2020-06-03 18:21:51 +02:00
Maxim Poliakovski
d21fdb25d1 Remove unused variable grab_branch. 2020-06-01 23:12:18 +02:00
Waqar Ahmed
0ab9380be3 clang-format everything 2020-05-12 23:55:45 +05:00
Maxim Poliakovski
64d74228c2 ppcopcodes: fix STMW emulation. 2020-04-21 04:58:21 +02:00
Maxim Poliakovski
3d13bc1ca6 ppcopcodes: fix TWI emulation. 2020-04-21 04:58:21 +02:00
dingusdev
60ffa5bfac Initial attempt at fixing SDL2 building for Windows 2020-03-22 20:15:12 -07:00
dingusdev
4ceed27ccf Simplified prog_counter back to pc 2020-03-05 07:48:10 -07:00
dingusdev
e31f7873f5 Fixed redunant variable names for PPC emulation. 2020-03-04 21:29:04 -07:00
Maxim Poliakovski
0eb557751b ppcopcodes: fix timebase read & write. 2020-03-02 00:01:18 +01:00
dingusdev
354409812e Updating files with proper licensing header 2020-02-28 09:04:28 -07:00
Maxim Poliakovski
90779bd9c6 Remove log messages from cache/TLB instructions. 2020-02-27 16:31:22 +01:00
dingusdev
6c1dc8aaf0 Further logging work 2020-02-24 19:50:52 -07:00
dingusdev
d91950e582 Further logging code. 2020-02-23 22:36:31 -07:00
dingusdev
30b1116393 Implemeted limited simplified mnemonics for rlwinm 2020-02-10 20:02:41 -07:00
Maxim Poliakovski
26bd402f44 ppcopcodes: optimize ppc_changecrf0() a bit. 2020-02-10 23:07:39 +01:00
Maxim Poliakovski
d0f1a34c02 Fix integer multiplications. 
Add a couple of tests for verifying XER[OV] updating code
for mullwo[.].
 2020-02-10 18:36:28 +01:00
Maxim Poliakovski
a72e2fd67d Simplify unsigned integer divisions. 2020-02-10 17:16:18 +01:00
Maxim Poliakovski
d4a2f400b5 Fix divw[.] and divwo[.] emulation. 
Also adds a couple of tests for undocumented
CPU behaviour. Remove superfluous "sidiv".
 2020-02-10 16:07:11 +01:00
dingusdev
a4d815344a Patched up DIVW(U)O(.) 2020-02-09 13:59:30 -07:00
Maxim Poliakovski
b057a8373d Simplify SUBF and remove not_this. 2020-02-09 08:05:20 +01:00
Maxim Poliakovski
32e64fc1b2 Make XER update code inline & private. 2020-02-09 08:01:26 +01:00
Maxim Poliakovski
49002860ed Fix carry update for subfc(.) and subfco(.). 2020-02-09 07:41:03 +01:00
dingusdev
6f16ba8c57 Fixed SUBFME(O)(.) 2020-02-08 22:06:01 -07:00
dingusdev
051edd5e38 Subtraction operation fixes in progress 2020-02-08 20:35:11 -07:00
dingusdev
b364aa0ae4 Patching up Subtraction Opcodes 2020-02-03 22:32:56 -07:00
dingusdev
f52be627b5 Fixed subfo(.) 2020-02-03 17:28:41 -07:00
Maxim Poliakovski
03439b2a49 Placeholders for SUBFEO[.], SUBFMEO[.] and SUBFZEO[.]. 2020-02-04 00:58:04 +01:00
Maxim Poliakovski
d25ce6a244 Add tests for shifts and fix their emulation. 2020-02-03 22:59:47 +01:00
Maxim Poliakovski
8c1c1e0a0d Fix and refactor additions with OE=1. 2020-02-03 19:42:33 +01:00
dingusdev
eb476adf87 Small fix to addeo 2020-02-02 16:36:47 -07:00
dingusdev
60bf5dfa6a ADDO(.) and ADDCO(.) fixed 
Temp fix to look into the issues with the addition ops and overflow flag issues.
 2020-02-02 11:54:33 -07:00
dingusdev
fe6ea7d9f6 Division ops fixed 2020-02-01 10:51:59 -07:00
dingusdev
0b2de4ac4c Division Ops Fixes WIP 2020-01-31 21:06:06 -07:00
dingusdev
8c10004f52 Fixed all multiplication issues 2020-01-31 18:17:01 -07:00
Maxim Poliakovski
99e8bc98f3 Fix mulhw/mulhw. emulation. 2020-02-01 02:02:12 +01:00
dingusdev
ddae141c22 Overflow fixes in progress 2020-01-31 16:54:37 -07:00
Maxim Poliakovski
aad75266f7 Fix cntlzw emulation. 2020-01-31 18:03:27 +01:00
dingusdev
3dead1f65c Updated TBRs correctly in mtspr 2020-01-29 21:08:42 -07:00
dingusdev
e1c0ec3dd2 Fixed MTSPR for time base regs 2020-01-29 20:47:12 -07:00
dingusdev
aa20d64b48 SPRs now use symbolic names 2020-01-27 20:39:23 -07:00
Maxim Poliakovski
7ae87e39c1 Refactor usage of the memory access functions. 
Memory access function have better names now.
Global variable return_value has been removed.
lhbrx emulation has been fixed.
 2020-01-27 01:36:52 +01:00
dingusdev
7c6d875ec8 Refactored floating point emulation 
Refactored for better 64-bit value loading and storing. I also added missing opcodes.
 2020-01-25 19:30:55 -07:00
dingusdev
6a083869e1 Started a massive FP fix-up 2020-01-21 19:25:50 -07:00
dingusdev
29d0ce362c
Fix 4 for the opcodes 2020-01-18 07:08:11 -07:00
dingusdev
bed665076d
Update 3 for the opcodes 2020-01-17 21:37:54 -07:00
dingusdev
3dc46ae664
Further opcode fixing 2020-01-17 21:26:09 -07:00
dingusdev
add1ac7a3d
Corrected several loading instructions 2020-01-17 21:06:26 -07:00
dingusdev
3010708f2a
mfsrin fixed 2020-01-16 19:25:41 -07:00
dingusdev
6dd8d55577 Profiler + Missing Instruction Added 2020-01-14 20:50:01 -07:00