RTOS/rtems
1
0
Fork 0
forked from Imagelibrary/rtems
Code Pull Requests Activity

Fixed trace bit manipulation per requests from Eric Norum and Chris Johns.

Browse Source 
Actual patch was from Eric Norum.
This commit is contained in:
Joel Sherrill
1998-04-27 15:28:43 +00:00
parent baa876a409
commit 0153d180b3
1 changed files with 3 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
c/src/exec/score/cpu/m68k/cpu_asm.s
View File

@@ -208,19 +208,11 @@ bframe: clrl SYM (_ISR_Signals_to_thread_executing)
#if ( M68K_HAS_SEPARATE_STACKS == 1 )
movec msp,a0 | a0 = master stack pointer
movew #0,a0@- | push format word
movel # SYM (_ISR_Dispatch),a0@- | push return addr
| 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
movel #SYM(_ISR_Dispatch),a0@- | push return addr
movew sr,a0@- | push existing sr
movec a0,msp | set master stack pointer
#else
| filter out the trace bit to stop single step debugging breaking
movew a7@(16+SR_OFFSET),d0
andw #0x7FFF,d0
movew d0,sr
jsr SYM (_Thread_Dispatch)
jsr SYM (_Thread_Dispatch) | Perform context switch
#endif
exit: moveml a7@+,d0-d1/a0-a1 | restore d0-d1,a0-a1