From: Robin Getz robin.getz@analog.com
Need to reload the loop counters to keep from corrupting hardware loops.
Signed-off-by: Robin Getz robin.getz@analog.com Signed-off-by: Mike Frysinger vapier@gentoo.org --- cpu/blackfin/interrupt.S | 11 ++++++++++- 1 files changed, 10 insertions(+), 1 deletions(-)
diff --git a/cpu/blackfin/interrupt.S b/cpu/blackfin/interrupt.S index 71e0fc6..8c7a262 100644 --- a/cpu/blackfin/interrupt.S +++ b/cpu/blackfin/interrupt.S @@ -1,7 +1,7 @@ /* * interrupt.S - trampoline default exceptions/interrupts to C handlers * - * Copyright (c) 2005-2007 Analog Devices Inc. + * Copyright (c) 2005-2009 Analog Devices Inc. * Licensed under the GPL-2 or later. */
@@ -17,10 +17,19 @@ ENTRY(_trap) sp.l = LO(L1_SRAM_SCRATCH_END - 20); sp.h = HI(L1_SRAM_SCRATCH_END - 20); SAVE_ALL_SYS + r0 = sp; /* stack frame pt_regs pointer argument ==> r0 */ sp += -12; call _trap_c; sp += 12; + +#if ANOMALY_05000257 + R7 = LC0; + LC0 = R7; + R7 = LC1; + LC1 = R7; +#endif + RESTORE_ALL_SYS sp = CONFIG_BFIN_SCRATCH_REG; rtx;