Changeset ff19ae5 in rtems for cpukit/score/cpu/m68k

Timestamp:
08/09/01 21:04:29 (23 years ago)
Author:
Joel Sherrill <joel.sherrill@…>
Branches:
4.10, 4.11, 4.8, 4.9, 5, master
Children:
ecb5f95
Parents:
02e4dcd
Message:

2001-08-09 Chris Johns <ccj@…>

  • cpu_asm.S: This patch was co-developed with Eric Norum <eric.norum@…>. It closes a one instruction window on some m68k CPU cores. It fixes symptoms seen as:

1) No more `interrupt handler invoked twice for

a single interrupt'.

2) No more `lockup when mc68360 CPM and PIT interrupts

are at different levels'.

It does insert a little more overhead on machines without hardware
interrupt stacks but correctness has a price.

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