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-rw-r--r--c/src/exec/score/cpu/powerpc/irq_stub.s228
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diff --git a/c/src/exec/score/cpu/powerpc/irq_stub.s b/c/src/exec/score/cpu/powerpc/irq_stub.s
deleted file mode 100644
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--- a/c/src/exec/score/cpu/powerpc/irq_stub.s
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@@ -1,228 +0,0 @@
-/* irq_stub.s 1.1 - 95/12/04
- *
- * This file contains the interrupt handler assembly code for the PowerPC
- * implementation of RTEMS. It is #included from cpu_asm.s.
- *
- * Author: Andrew Bray <andy@i-cubed.co.uk>
- *
- * COPYRIGHT (c) 1995 by i-cubed ltd.
- *
- * To anyone who acknowledges that this file is provided "AS IS"
- * without any express or implied warranty:
- * permission to use, copy, modify, and distribute this file
- * for any purpose is hereby granted without fee, provided that
- * the above copyright notice and this notice appears in all
- * copies, and that the name of i-cubed limited not be used in
- * advertising or publicity pertaining to distribution of the
- * software without specific, written prior permission.
- * i-cubed limited makes no representations about the suitability
- * of this software for any purpose.
- *
- * $Id$
- */
-
-/* void __ISR_Handler()
- *
- * This routine provides the RTEMS interrupt management.
- * The vector number is in r0. R0 has already been stacked.
- *
- */
- /* Finish off the interrupt frame */
- stw r2, IP_2(r1)
- stw r3, IP_3(r1)
- stw r4, IP_4(r1)
- stw r5, IP_5(r1)
- stw r6, IP_6(r1)
- stw r7, IP_7(r1)
- stw r8, IP_8(r1)
- stw r9, IP_9(r1)
- stw r10, IP_10(r1)
- stw r11, IP_11(r1)
- stw r12, IP_12(r1)
- stw r13, IP_13(r1)
- stmw r28, IP_28(r1)
- mfcr r5
- mfctr r6
- mfxer r7
- mflr r8
- MFPC (r9)
- MFMSR (r10)
- /* Establish addressing */
- mfspr r11, sprg3
- dcbt r0, r11
- stw r5, IP_CR(r1)
- stw r6, IP_CTR(r1)
- stw r7, IP_XER(r1)
- stw r8, IP_LR(r1)
- stw r9, IP_PC(r1)
- stw r10, IP_MSR(r1)
-
- lwz r30, Vector_table(r11)
- slwi r4,r0,2
- lwz r28, Nest_level(r11)
- add r4, r4, r30
-
- lwz r30, 0(r28)
- mr r3, r0
- lwz r31, Stack(r11)
- /*
- * #if ( CPU_HAS_SOFTWARE_INTERRUPT_STACK == TRUE )
- * if ( _ISR_Nest_level == 0 )
- * switch to software interrupt stack
- * #endif
- */
- /* Switch stacks, here we must prevent ALL interrupts */
- mfmsr r5
- mfspr r6, sprg2
- mtmsr r6
- cmpwi r30, 0
- lwz r29, Disable_level(r11)
- subf r31,r1,r31
- bne LABEL (nested)
- stwux r1,r1,r31
-LABEL (nested):
- /*
- * _ISR_Nest_level++;
- */
- lwz r31, 0(r29)
- addi r30,r30,1
- stw r30,0(r28)
- /* From here on out, interrupts can be re-enabled. RTEMS
- * convention says not.
- */
- lwz r4,0(r4)
- /*
- * _Thread_Dispatch_disable_level++;
- */
- addi r31,r31,1
- stw r31, 0(r29)
- mtmsr r5
- /*
- * (*_ISR_Vector_table[ vector ])( vector );
- */
-#if (PPC_ABI == PPC_ABI_POWEROPEN)
- lwz r6,0(r4)
- lwz r2,4(r4)
- mtlr r6
- lwz r11,8(r4)
-#endif
-#if (PPC_ABI == PPC_ABI_GCC27)
- lwz r2, Default_r2(r11)
- mtlr r4
- lwz r2, 0(r2)
-#endif
-#if (PPC_ABI == PPC_ABI_SVR4 || PPC_ABI == PPC_ABI_EABI)
- mtlr r4
- lwz r2, Default_r2(r11)
- lwz r13, Default_r13(r11)
- lwz r2, 0(r2)
- lwz r13, 0(r13)
-#endif
- mr r4,r1
- blrl
- /* NOP marker for debuggers */
- or r6,r6,r6
-
- /* We must re-disable the interrupts */
- mfspr r11, sprg3
- mfspr r0, sprg2
- mtmsr r0
- lwz r30, 0(r28)
- lwz r31, 0(r29)
-
- /*
- * if (--Thread_Dispatch_disable,--_ISR_Nest_level)
- * goto easy_exit;
- */
- addi r30, r30, -1
- cmpwi r30, 0
- addi r31, r31, -1
- stw r30, 0(r28)
- stw r31, 0(r29)
- bne LABEL (easy_exit)
- cmpwi r31, 0
-
- lwz r30, Switch_necessary(r11)
-
- /*
- * #if ( CPU_HAS_SOFTWARE_INTERRUPT_STACK == TRUE )
- * restore stack
- * #endif
- */
- lwz r1,0(r1)
- bne LABEL (easy_exit)
- lwz r30, 0(r30)
- lwz r31, Signal(r11)
-
- /*
- * if ( _Context_Switch_necessary )
- * goto switch
- */
- cmpwi r30, 0
- lwz r28, 0(r31)
- li r6,0
- bne LABEL (switch)
- /*
- * if ( !_ISR_Signals_to_thread_executing )
- * goto easy_exit
- * _ISR_Signals_to_thread_executing = 0;
- */
- cmpwi r28, 0
- beq LABEL (easy_exit)
-
- /*
- * switch:
- * call _Thread_Dispatch() or prepare to return to _ISR_Dispatch
- */
-LABEL (switch):
- stw r6, 0(r31)
- /* Re-enable interrupts */
- lwz r0, IP_MSR(r1)
-#if (PPC_ABI == PPC_ABI_POWEROPEN)
- lwz r2, Dispatch_r2(r11)
-#else
- /* R2 and R13 still hold their values from the last call */
-#endif
- mtmsr r0
- bl SYM (_Thread_Dispatch)
- /* NOP marker for debuggers */
- or r6,r6,r6
- /*
- * prepare to get out of interrupt
- */
- /* Re-disable IRQs */
- mfspr r0, sprg2
- mtmsr r0
- /*
- * easy_exit:
- * prepare to get out of interrupt
- * return from interrupt
- */
-LABEL (easy_exit):
- lwz r5, IP_CR(r1)
- lwz r6, IP_CTR(r1)
- lwz r7, IP_XER(r1)
- lwz r8, IP_LR(r1)
- lwz r9, IP_PC(r1)
- lwz r10, IP_MSR(r1)
- mtcrf 255,r5
- mtctr r6
- mtxer r7
- mtlr r8
- MTPC (r9)
- MTMSR (r10)
- lwz r0, IP_0(r1)
- lwz r2, IP_2(r1)
- lwz r3, IP_3(r1)
- lwz r4, IP_4(r1)
- lwz r5, IP_5(r1)
- lwz r6, IP_6(r1)
- lwz r7, IP_7(r1)
- lwz r8, IP_8(r1)
- lwz r9, IP_9(r1)
- lwz r10, IP_10(r1)
- lwz r11, IP_11(r1)
- lwz r12, IP_12(r1)
- lwz r13, IP_13(r1)
- lmw r28, IP_28(r1)
- lwz r1, 0(r1)