CVS commit: src/sys/arch/atari/atari

["Izumi Tsutsui" <tsutsui%netbsd.org@localhost>]

Module Name:    src
Committed By:   tsutsui
Date:           Sun Sep 20 17:38:56 UTC 2026

Modified Files:
        src/sys/arch/atari/atari: atari_init.c

Log Message:
atari: Fix fatal 68030 MMU TC initialization bug

ATARITT kernels from NetBSD 11.0 and -current fail to boot on my
Atari TT030.

The inline asm that loads TC specifies only `"a" (&tc)` as an input,
so the compiler may eliminate the initialization of tc as a dead store.
Then the generated code loads an uninitialized value from the stack
into TC.

Add an `"m" (tc)` input operand to the inline asm so that the compiler
knows that the asm reads tc from memory.

Tested with both NetBSD 11.0 and -current on Atari TT030 and
must be pulled up to netbsd-11.


To generate a diff of this commit:
cvs rdiff -u -r1.120 -r1.121 src/sys/arch/atari/atari/atari_init.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.