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Fix from Chris Johns <ccj@acm.org>. Comments:

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Mask interrupts and save the current USP and MSP for all 68000 processor
    variants.
This commit is contained in:
Joel Sherrill
1998-07-21 13:59:12 +00:00
parent bced36ddf0
commit 92fc5a5db7
1 changed files with 4 additions and 9 deletions
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13
c/src/lib/start/m68k/start.s
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@@ -51,19 +51,14 @@ SYM (hiintstack):
PUBLIC (start_around) PUBLIC (start_around)
SYM (start_around): SYM (start_around):
move.w sr, SYM (initial_sr) move.w sr, SYM (initial_sr)
oriw #0x3700,sr | SUPV MODE,INTS OFF!!!
#if ( M68K_HAS_SEPARATE_STACKS == 1 ) #if ( M68K_HAS_SEPARATE_STACKS == 1 )
movec isp,a0 movec isp,a0
move.l a0, SYM (initial_isp) move.l a0, SYM (initial_isp)
movec usp,a0
move.l a0, SYM (initial_usp)
movec msp,a0
move.l a0, SYM (initial_msp)
#else
move.l a7, SYM (initial_msp)
#endif #endif
oriw #0x0700,sr | INTERRUPTS OFF!!! move usp,a0
move.l a0, SYM (initial_usp)
move.l a7, SYM (initial_msp)
| |
| zero out uninitialized data area | zero out uninitialized data area