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Patch from Chris Johns to filter out the trace bit on CPU models

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which have hardware support for a separate interrupt stack.
This commit is contained in:
Joel Sherrill
1997-11-29 17:51:27 +00:00
parent 61fc72c9dc
commit 80868140c3
1 changed files with 5 additions and 2 deletions
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7
c/src/exec/score/cpu/m68k/cpu_asm.s
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@@ -198,11 +198,14 @@ bframe: clrl SYM (_ISR_Signals_to_thread_executing)
movec msp,a0 | a0 = master stack pointer
movew #0,a0@- | push format word
movel # SYM (_ISR_Dispatch),a0@- | push return addr
movew a0@(6+SR_OFFSET),a0@- | push thread sr
| filter out the trace bit to stop single step debugging breaking
movew a0@(6+SR_OFFSET),d0
andw #0x7FFF,d0
movew d0,a0@- | push thread sr
movec a0,msp | set master stack pointer
#else
| filter out the trace bit to stop single step debugging breaking
| filter out the trace bit to stop single step debugging breaking
movew a7@(16+SR_OFFSET),d0
andw #0x7FFF,d0
movew d0,sr