Gentle ping on this series. v5 addresses Zoltan's review feedback from v4 (fsave simplification, NMI edge-trigger rationale, added Signed-off-by). Would appreciate any review when you have a chance.
Dan. On Wed, Sep 2, 2026 at 9:46 PM 54weasels <[email protected]> wrote: > This series adds M68020/030-specific features to the m68k target that > are required by the Sun-3 machine (series C) and its PROM/SunOS guests: > > 1/6: CAAR register stub for 68020/030 cache control > 2/6: fsave/frestore fix for 68881 (non-68040) FPU frames > 3/6: Edge-triggered NMI semantics for Level 7 interrupts > 4/6: Function code extraction during TLB fills > 5/6: Custom MMU intercept hook for Sun-3 transparent translation > 6/6: Physical Bus Error and M68020 Format 0xB stack frames > > Changes since v4: > - Added Signed-off-by to all patches. > - Patch 2/6 (fsave): Addressed Zoltan's review — replaced redundant > M68040||FPU check with just M68K_FEATURE_FPU, removed unnecessary > if/else in frestore, moved Context: below --- separator. > - Patch 3/6 (NMI): Addressed Zoltan's review — nmi_pending cannot be > replaced by testing pending_level == 7. The flag captures the edge > transition (level < 7 → 7) required by Motorola's NMI specification, > while pending_level only reflects the current interrupt level. > Testing pending_level alone would produce level-triggered behavior, > firing on every interrupt check rather than once per edge. > - Rebased on current master. > > 54weasels (6): > target/m68k: Add dummy CAAR register > target/m68k: Fix fsave/frestore for 68881 FPU > target/m68k: Fix NMI pending for Level 7 interrupts > target/m68k: Extract Function Codes during TLB fills > target/m68k: Implement custom MMU intercept hook > target/m68k: Implement Physical Bus Error and Stack > > target/m68k/cpu.c | 4 +- > target/m68k/cpu.h | 21 ++++- > target/m68k/helper.c | 130 ++++++++++++++++++++++++++++- > target/m68k/op_helper.c | 175 ++++++++++++++++++++++++++-------------- > target/m68k/translate.c | 30 ++++--- > 5 files changed, 280 insertions(+), 80 deletions(-) > > -- > 2.50.1 (Apple Git-155) > >
