ppsspp

preserve-emulation/ppsspp

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Henrik RydgårdandClaude Fable 5.1 e0f09c55d5 MIPS: INT_MIN / -1 leaves HI at zero, like the hardware

Every path special-cased the one signed division overflow and set the
remainder to -1. cpu/cpu_alu/cpu_div, recorded on a PSP, says it's 0.
The classic arm64 JIT was the only one that got it right, by not
special-casing it at all.

arm64, RISC-V and LoongArch all produce INT_MIN with remainder 0 natively,
so their fixup blocks go away. x86 has to keep the check (IDIV traps) but
sets HI to 0 now, and so do both interpreters.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

2026-09-22 11:02:20 -06:00

ArmAsm.cpp

Add a utility function for all the ABIs to call functions with a pointer arg. Use to call Advance from the JIT with the MIPSContext. Indent some code better.

2026-08-13 08:09:30 +02:00

ArmCompALU.cpp

MIPS: INT_MIN / -1 leaves HI at zero, like the hardware

2026-09-22 11:02:20 -06:00

ArmCompBranch.cpp

Plumb through the PC value for syscalls, so we can get better diagnostics for unresolved ones.

2026-08-15 19:14:13 +02:00

ArmCompFPU.cpp

Implement MMIO for the JIT (by falling back to the interpreter for load/stores from kernel addresses)