dingusdev
7835aec034
Further CPU cleanup
2023-11-21 08:06:50 -07:00
dingusdev
d92ae6136a
CPU code clean-up in progress
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Happened to fix one case in the process.
2023-11-19 17:56:30 -07:00
Maxim Poliakovski
c47cbb354d
Add is_601 flag for selecting MPC601 specific behavior.
2023-09-18 21:20:59 +02:00
joevt
300965ab10
Decrementer exception changes.
2023-08-10 00:46:04 +02:00
dingusdev
4364c89fd4
Slight clean-up for execution type
2023-06-19 22:36:27 -07:00
Maxim Poliakovski
597c077b19
Implement PPC decrementer.
2023-02-15 02:36:40 +01:00
Maxim Poliakovski
7ba8921649
ppcemu: add PVR for 603ev.
2022-12-23 17:19:46 +01:00
joevt
6f0d3b48ba
Fix TBR range
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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
01d7d6bac3
Make accessing RTC or TBR not affect the other
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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
Maxim Poliakovski
b38d00ce2d
cpu/ppc: improve support for external interrupts.
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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
Maxim Poliakovski
8c0f391548
ppcemu: add enums for HID0 and HID1.
2022-08-15 14:45:55 +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
f1ed56ae9a
debugger: a couple of cosmetic improvements.
2022-02-26 10:57:13 +01:00
Maxim Poliakovski
d8c3cfc38e
Fix next instruction address after external exceptions.
2022-01-20 01:38:41 +01:00
Maxim Poliakovski
aefc66d118
Fix external exception processing.
2022-01-10 17:56:24 +01:00
Maxim Poliakovski
339db4a078
Add timers management.
2022-01-10 17:56:24 +01:00
Maxim Poliakovski
087402290d
Implement virtual time based on instruction counting.
2021-12-20 00:10:02 +01:00
dingusdev
c2a63bab09
FP Opcode Test Fixes
2021-10-30 16:43:13 -07:00
Maxim Poliakovski
c0cd6eb38f
Add missing licence headers, update license date.
2021-10-23 21:00:31 +02:00
Maxim Poliakovski
9329d56d83
Move devices into dedicated subdirectories.
2021-10-23 20:17:47 +02:00
dingusdev
7919cd0590
Merge pull request #21 from dingusdev/floating-point
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Floating point fixes. Rehauled floating-point emulation code. Fixed a test suite for floating points.
2021-10-19 07:18:21 -07:00
dingusdev
fb277945c2
Floating point test fixes
2021-10-19 07:16:15 -07:00
Maxim Poliakovski
e53296f7a9
Implement all required context-synchronizing events.
2021-10-13 20:58:09 +02:00
dingusdev
5672a154cb
Floating-point refactor, part 3
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Condensed code to shorten enum names and remove casting.
Condensed mffs and partially fixed NAN checks for FADD(S).
2021-10-10 07:48:49 -07:00
dingusdev
2d65ed47fc
Floating point overhaul, part 2
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Further formatting fixes. Removed obsoleted separation definitions. Fixed rounding to nearest.
2021-10-09 19:42:25 -07:00
dingusdev
e344b089b3
Floating point overhaul, part 1
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Cleaned up formatting and reworked the INF/NAN checks
2021-10-09 15:08:53 -07:00
dingusdev
f605c484dd
ecowx and eciwx added
2021-10-05 17:40:09 -07:00
Maxim Poliakovski
22827642e4
ppcmmu: implement 601-style BAT.
2021-09-27 12:37:35 +02:00
Maxim Poliakovski
089645e830
Implement SoftTLB for writes.
2021-08-22 17:34:23 +02:00
Maxim Poliakovski
6f9ee10de5
Rework PPC CPU profiler.
2021-04-29 02:26:17 +02:00
dingusdev
ce70b0f096
Removed obseleted function declarations
2021-02-03 20:01:02 -07:00
dingusdev
7f0acaf3d3
Load and store instruction clean-up
2021-01-25 21:03:17 -07:00
dingusdev
60f84ef0d9
Refactoring interpreter value storage
2021-01-24 11:59:16 -07:00
Maxim Poliakovski
3189876d41
ppcfpopcodes: fix fmul emulation.
2021-01-24 04:53:19 +01:00
Maxim Poliakovski
bb3f4e596e
ppcexec: fix subopcode 59 dispatching.
2021-01-23 03:12:39 +01:00
Maxim Poliakovski
d8f7588693
debugger: some fixes and improvements.
2021-01-12 15:17:51 +01:00
dingusdev
2bac606365
Added to Heathrow
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Plus some debugging stuff to help figure out what register 0x34 is responsible for.
2021-01-08 15:29:43 -07:00
dingusdev
79e3d398ba
mcrf implemented
2021-01-07 20:38:32 -07:00
Maxim Poliakovski
dbbaf13a78
ppcopcodes: fix cntlzw to compile properly with Clang.
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Enable USE_GCC_BUILTINS by default.
2020-12-18 18:33:00 +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
0c202b0c2d
Merging the 68k debugger from another branch
2020-11-26 20:00:08 -07:00
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
b9dcfef551
debugger: debugging commands for 68k code.
2020-07-16 14:26:34 +02:00
Maxim Poliakovski
6b74e358dc
WIP: basic 68k debugging environment.
2020-07-15 02:19:05 +02:00
Maxim Poliakovski
39a643aff6
Merge branch 'machines'
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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
