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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [lib/] [libcpu/] [powerpc/] [mpc821/] [vectors/] [vectors.S] - Rev 173
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/* vectors.s 1.1 - 95/12/04** This file contains the assembly code for the PowerPC MPC821* interrupt veneers for RTEMS.** Author: Jay Monkman (jmonkman@frasca.com)** Copyright (C) 1998 by Frasca International, Inc.** Derived from c/src/lib/libcpu/ppc/ppc403/vectors/vectors.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.**//** The issue with this file is getting it loaded at the right place.* The first vector MUST be at address 0x????0100.* How this is achieved is dependant on the tool chain.** However the basic mechanism for ELF assemblers is to create a* section called ".vectors", which will be loaded to an address* between 0x????0000 and 0x????0100 (inclusive) via a link script.** The basic mechanism for XCOFF assemblers is to place it in the* normal text section, and arrange for this file to be located* at an appropriate position on the linker command line.** The variable 'PPC_VECTOR_FILE_BASE' must be defined to be the* offset from 0x????0000 to the first location in the file. This* will be either 0x0000 or 0xfff0.** $Id: vectors.S,v 1.2 2001-09-27 12:01:28 chris Exp $*/#include "asm.h"#include <mpc821.h>#ifndef PPC_VECTOR_FILE_BASE#error "PPC_VECTOR_FILE_BASE is not defined."#endif/* Where this file will be loaded */.set file_base, PPC_VECTOR_FILE_BASE/* Offset to store reg 0 */.set IP_LINK, 0#if (PPC_ABI == PPC_ABI_POWEROPEN || PPC_ABI == PPC_ABI_GCC27).set IP_0, (IP_LINK + 56)#else.set IP_0, (IP_LINK + 8)#endif.set IP_2, (IP_0 + 4).set IP_3, (IP_2 + 4).set IP_4, (IP_3 + 4).set IP_5, (IP_4 + 4).set IP_6, (IP_5 + 4).set IP_7, (IP_6 + 4).set IP_8, (IP_7 + 4).set IP_9, (IP_8 + 4).set IP_10, (IP_9 + 4).set IP_11, (IP_10 + 4).set IP_12, (IP_11 + 4).set IP_13, (IP_12 + 4).set IP_28, (IP_13 + 4).set IP_29, (IP_28 + 4).set IP_30, (IP_29 + 4).set IP_31, (IP_30 + 4).set IP_CR, (IP_31 + 4).set IP_CTR, (IP_CR + 4).set IP_XER, (IP_CTR + 4).set IP_LR, (IP_XER + 4).set IP_PC, (IP_LR + 4).set IP_MSR, (IP_PC + 4).set IP_END, (IP_MSR + 16)/* Vector offsets */.set begin_vector, 0x0000.set reset_vector, 0x0100.set mach_vector, 0x0200.set dsi_vector, 0x0300.set isi_vector, 0x0400.set ext_vector, 0x0500.set align_vector, 0x0600.set prog_vector, 0x0700.set float_vector, 0x0800.set dec_vector, 0x0900.set sys_vector, 0x0C00.set trace_vector, 0x0d00.set syscall_vector, 0x0c00.set fpassist_vector, 0x0e00.set software_vector, 0x1000.set itlbm_vector, 0x1100.set dtlbm_vector, 0x1200.set itlbe_vector, 0x1300.set dtlbe_vector, 0x1400.set databkpt_vector, 0x1c00.set insbkpt_vector, 0x1d00.set perbkpt_vector, 0x1e00.set dev_vector, 0x1f00.set siu_vector, 0x2000.set cpm_vector, 0x2400/* Go to the right section */#if PPC_ASM == PPC_ASM_ELF.section .vectors,"awx",@progbits#elif PPC_ASM == PPC_ASM_XCOFF.csect .text[PR]#endifPUBLIC_VAR (__vectors)SYM (__vectors):/* Critical error handling */.org reset_vector - file_base#if (PPC_ABI == PPC_ABI_POWEROPEN || PPC_ABI == PPC_ABI_GCC27)#if (PPC_HAS_FPU)stwu r1, -(20*4 + 18*8 + IP_END)(r1)#elsestwu r1, -(20*4 + IP_END)(r1)#endif#elsestwu r1, -(IP_END)(r1)#endifstw r0, IP_0(r1)li r0, PPC_IRQ_SYSTEM_RESETb PROC (_ISR_Handler)/* Machine check exception */.org mach_vector - file_base#if (PPC_ABI == PPC_ABI_POWEROPEN || PPC_ABI == PPC_ABI_GCC27)#if (PPC_HAS_FPU)stwu r1, -(20*4 + 18*8 + IP_END)(r1)#elsestwu r1, -(20*4 + IP_END)(r1)#endif#elsestwu r1, -(IP_END)(r1)#endifstw r0, IP_0(r1)li r0, PPC_IRQ_MCHECKb PROC (_ISR_Handler)/* Protection exception */.org dsi_vector - file_base#if (PPC_ABI == PPC_ABI_POWEROPEN || PPC_ABI == PPC_ABI_GCC27)#if (PPC_HAS_FPU)stwu r1, -(20*4 + 18*8 + IP_END)(r1)#elsestwu r1, -(20*4 + IP_END)(r1)#endif#elsestwu r1, -(IP_END)(r1)#endifstw r0, IP_0(r1)li r0, PPC_IRQ_PROTECTb PROC (_ISR_Handler)/* Instruction Storage exception */.org isi_vector - file_base#if (PPC_ABI == PPC_ABI_POWEROPEN || PPC_ABI == PPC_ABI_GCC27)#if (PPC_HAS_FPU)stwu r1, -(20*4 + 18*8 + IP_END)(r1)#elsestwu r1, -(20*4 + IP_END)(r1)#endif#elsestwu r1, -(IP_END)(r1)#endifstw r0, IP_0(r1)li r0, PPC_IRQ_ISIb PROC (_ISR_Handler)/* External interrupt *//* When an external interrupt occurs, we must find out what caused it *//* before calling the RTEMS handler. First we use SIVEC to decide *//* what signalled the interrupt to the SIU. */.org ext_vector - file_base#if (PPC_ABI == PPC_ABI_POWEROPEN || PPC_ABI == PPC_ABI_GCC27)#if (PPC_HAS_FPU)stwu r1, -(20*4 + 18*8 + IP_END)(r1)#elsestwu r1, -(20*4 + IP_END)(r1)#endif#elsestwu r1, -(IP_END)(r1)#endifstw r0, IP_0(r1)stw r9, IP_9(r1) /* r9 will be restored in the next level */stw r10, IP_10(r1)lis r9, m821@haaddi r9, r9, m821@llbz r10, 0x1c(r9) /* SIVEC */rlwinm r10, r10, 4, 0, 27 /* each psuedo vector will have *//* room for 16 instructions */addis r10, r10, siu_vectors@haaddi r10, r10, siu_vectors@lmflr r0mtlr r10lwz r10, IP_10(r1)blr/* Align exception */.org align_vector - file_base.extern align_hb align_h/* Program exception */.org prog_vector - file_base#if (PPC_ABI == PPC_ABI_POWEROPEN || PPC_ABI == PPC_ABI_GCC27)#if (PPC_HAS_FPU)stwu r1, -(20*4 + 18*8 + IP_END)(r1)#elsestwu r1, -(20*4 + IP_END)(r1)#endif#elsestwu r1, -(IP_END)(r1)#endifstw r0, IP_0(r1)li r0, PPC_IRQ_PROGRAMb PROC (_ISR_Handler)/* Float exception */.org float_vector - file_base#if (PPC_ABI == PPC_ABI_POWEROPEN || PPC_ABI == PPC_ABI_GCC27)#if (PPC_HAS_FPU)stwu r1, -(20*4 + 18*8 + IP_END)(r1)#elsestwu r1, -(20*4 + IP_END)(r1)#endif#elsestwu r1, -(IP_END)(r1)#endifstw r0, IP_0(r1)li r0, PPC_IRQ_NOFPb PROC (_ISR_Handler)/* Decrementer exception */.org dec_vector - file_base#if (PPC_ABI == PPC_ABI_POWEROPEN || PPC_ABI == PPC_ABI_GCC27)#if (PPC_HAS_FPU)stwu r1, -(20*4 + 18*8 + IP_END)(r1)#elsestwu r1, -(20*4 + IP_END)(r1)#endif#elsestwu r1, -(IP_END)(r1)#endifstw r0, IP_0(r1)li r0, PPC_IRQ_PROGRAMb PROC (_ISR_Handler)/* System call */.org sys_vector - file_base#if (PPC_ABI == PPC_ABI_POWEROPEN || PPC_ABI == PPC_ABI_GCC27)#if (PPC_HAS_FPU)stwu r1, -(20*4 + 18*8 + IP_END)(r1)#elsestwu r1, -(20*4 + IP_END)(r1)#endif#elsestwu r1, -(IP_END)(r1)#endifstw r0, IP_0(r1)li r0, PPC_IRQ_SCALLb PROC (_ISR_Handler)/* Trace interrupt */.org trace_vector - file_base#if (PPC_ABI == PPC_ABI_POWEROPEN || PPC_ABI == PPC_ABI_GCC27)#if (PPC_HAS_FPU)stwu r1, -(20*4 + 18*8 + IP_END)(r1)#elsestwu r1, -(20*4 + IP_END)(r1)#endif#elsestwu r1, -(IP_END)(r1)#endifstw r0, IP_0(r1)li r0, PPC_IRQ_TRACEb PROC (_ISR_Handler).org itlbm_vector - file_baseitlbm_vectors:mfspr r2, 784 /* MI_CTR */mfspr r3, 792 /* MD_CTR */mfspr r4, 787 /* MI_EPN */mfspr r5, 789 /* MI_TWC */mfspr r6, 797 /* MD_TWC */mfspr r7, 789 /* MI_TWC */mfspr r8, 790 /* MI_RPN */mfspr r9, 798 /* MD_RPN */mfspr r10, 796 /* M_TWB */mfspr r11, 793 /* M_CASID */mfspr r12, 786 /* MI_AP */mfspr r13, 794 /* MD_AP */mfspr r14, 799 /* M_TW */mfspr r15, 816 /* MI_CAM */mfspr r16, 817 /* MI_RAM0 */mfspr r17, 818 /* MI_RAM1 */mfspr r18, 824 /* MD_CAM */mfspr r19, 825 /* M_RAM0 */mfspr r20, 826 /* M_RAM1 */.long 0.org dtlbm_vector - file_basedtlbm_vectors:mfspr r1, 0x1amfspr r2, 784 /* MI_CTR */mfspr r3, 792 /* MD_CTR */lis r3, 0x400mtspr 792, r3mfspr r4, 787 /* MI_EPN */mfspr r5, 789 /* MI_TWC */mfspr r6, 797 /* MD_TWC */mfspr r7, 789 /* MI_TWC */mfspr r8, 790 /* MI_RPN */mfspr r9, 798 /* MD_RPN */mfspr r10, 796 /* M_TWB */mfspr r11, 793 /* M_CASID */mfspr r12, 786 /* MI_AP */mfspr r13, 794 /* MD_AP */mfspr r14, 799 /* M_TW */mfspr r15, 816 /* MI_CAM */mfspr r16, 817 /* MI_RAM0 */mfspr r17, 818 /* MI_RAM1 */mtspr 824, r18mfspr r18, 824 /* MD_CAM */mfspr r19, 825 /* M_RAM0 */mfspr r20, 826 /* M_RAM1 */.long 0.org itlbe_vector - file_baseitlbe_vectors:mfspr r2, 784 /* MI_CTR */mfspr r3, 792 /* MD_CTR */mfspr r4, 787 /* MI_EPN */mfspr r5, 789 /* MI_TWC */mfspr r6, 797 /* MD_TWC */mfspr r7, 789 /* MI_TWC */mfspr r8, 790 /* MI_RPN */mfspr r9, 798 /* MD_RPN */mfspr r10, 796 /* M_TWB */mfspr r11, 793 /* M_CASID */mfspr r12, 786 /* MI_AP */mfspr r13, 794 /* MD_AP */mfspr r14, 799 /* M_TW */mfspr r15, 816 /* MI_CAM */mfspr r16, 817 /* MI_RAM0 */mfspr r17, 818 /* MI_RAM1 */mfspr r18, 824 /* MD_CAM */mfspr r19, 825 /* M_RAM0 */mfspr r20, 826 /* M_RAM1 */.long 0.org dtlbe_vector - file_basedtlbe_vectors:mfspr r2, 784 /* MI_CTR */mfspr r3, 792 /* MD_CTR */mfspr r4, 787 /* MI_EPN */mfspr r5, 789 /* MI_TWC */mfspr r6, 797 /* MD_TWC */mfspr r7, 789 /* MI_TWC */mfspr r8, 790 /* MI_RPN */mfspr r9, 798 /* MD_RPN */mfspr r10, 796 /* M_TWB */mfspr r11, 793 /* M_CASID */mfspr r12, 786 /* MI_AP */mfspr r13, 794 /* MD_AP */mfspr r14, 799 /* M_TW */mfspr r15, 816 /* MI_CAM */mfspr r16, 817 /* MI_RAM0 */mfspr r17, 818 /* MI_RAM1 */mfspr r18, 824 /* MD_CAM */mfspr r19, 825 /* M_RAM0 */mfspr r20, 826 /* M_RAM1 */.long 0/* Now we look at what signaled the interrupt to the SIU. *//* I needed to do this in order to decode the CPM interrupts before *//* calling _ISR_Handler *//* *IRQ0 */.org siu_vector - file_basesiu_vectors:mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_IRQ0b PROC (_ISR_Handler)nopnopnopnopnopnopnopnopnopnopnopnop/* Level 0 */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_LVL0b PROC (_ISR_Handler)nopnopnopnopnopnopnopnopnopnopnopnop/* *IRQ1 */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_IRQ1b PROC (_ISR_Handler)nopnopnopnopnopnopnopnopnopnopnopnop/* This is probably not the "correct" way to do this. I need to have a* way of calling _ISR_Handler for the CPM interrupts and this is the* simplest way I can think of. Since I have the CPM interrupt mapped* to the SIU interrupt level 1 on the eth-comm board, I put it here.* It would probably be ok if I moved this directory to under libbsp* instead of libcpu. For now, deal with it.*//* Level 1 - CPM *//* Now we need to get the CPM interrupt vector *//* Registers: *//* R0 - has stored value of LR *//* R9 - pointer to m821 struct *//* R10 has already been saved and restored */li r10, 1sth r10, 0x930(r9) /* CIVR */lbz r10, 0x930(r9) /* if we use this as an offset into a */rlwinm r10, r10, 1, 0, 31 /* table, each entry will have room *//* 4 instructions. */addis r10, r10, cpm_vectors@haaddi r10, r10, cpm_vectors@lmtlr r10lwz r10, IP_10(r1)blrnopnopnopnopnopnopnop#if 0/* Level 1 */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_LVL1b PROC (_ISR_Handler)nopnopnopnopnopnopnopnopnopnopnopnop#endif/* *IRQ2 */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_IRQ2b PROC (_ISR_Handler)nopnopnopnopnopnopnopnopnopnopnopnop/* Level 2 */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_LVL2b PROC (_ISR_Handler)nopnopnopnopnopnopnopnopnopnopnopnop/* *IRQ3 */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_IRQ3b PROC (_ISR_Handler)nopnopnopnopnopnopnopnopnopnopnopnop/* Level 3 */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_LVL3b PROC (_ISR_Handler)nopnopnopnopnopnopnopnopnopnopnopnop/* *IRQ4 */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_IRQ4b PROC (_ISR_Handler)nopnopnopnopnopnopnopnopnopnopnopnop/* Level 4 */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_LVL4b PROC (_ISR_Handler)nopnopnopnopnopnopnopnopnopnopnopnop/* *IRQ5 */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_IRQ5b PROC (_ISR_Handler)nopnopnopnopnopnopnopnopnopnopnopnop/* Level 5 */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_LVL5b PROC (_ISR_Handler)nopnopnopnopnopnopnopnopnopnopnopnop/* *IRQ6 */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_IRQ6b PROC (_ISR_Handler)nopnopnopnopnopnopnopnopnopnopnopnop/* Level 6 */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_LVL6b PROC (_ISR_Handler)nopnopnopnopnopnopnopnopnopnopnopnop/* *IRQ7 */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_IRQ7b PROC (_ISR_Handler)nopnopnopnopnopnopnopnopnopnopnopnop/* Level 7 */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_LVL7b PROC (_ISR_Handler)nopnopnopnopnopnopnopnopnopnopnopnop/* .org cpm_vector - file_base*/cpm_vectors:mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_CPM_RESERVED_0.long 0/* PC4 */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_CPM_PC4b PROC (_ISR_Handler)/* PC5 */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_CPM_PC5b PROC (_ISR_Handler)/* SMC2 / PIP */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_CPM_SMC2b PROC (_ISR_Handler)/* SMC1 */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_CPM_SMC1b PROC (_ISR_Handler)/* SPI */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_CPM_SPIb PROC (_ISR_Handler)/* PC6 */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_CPM_PC6b PROC (_ISR_Handler)/* Timer 4 */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_CPM_TIMER4b PROC (_ISR_Handler)/* Reserved - we should never see this */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_CPM_RESERVED_8.long 0/* PC7 */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_CPM_PC7b PROC (_ISR_Handler)/* PC8 */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_CPM_PC8b PROC (_ISR_Handler)/* PC9 */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_CPM_PC9b PROC (_ISR_Handler)/* Timer 3 */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_CPM_TIMER3b PROC (_ISR_Handler)/* Reserved - we should never get here */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_CPM_RESERVED_D.long 0/* PC10 */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_CPM_PC10b PROC (_ISR_Handler)/* PC11 */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_CPM_PC11b PROC (_ISR_Handler)/* I2C */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_CPM_I2Cb PROC (_ISR_Handler)/* RISC Timer Table */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_CPM_RISC_TIMERb PROC (_ISR_Handler)/* Timer 2 */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_CPM_TIMER2b PROC (_ISR_Handler)/* Reserved - we should never get here */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_CPM_RESERVED_13.long 0/* IDMA2 */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_CPM_IDMA2b PROC (_ISR_Handler)/* IDMA1 */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_CPM_IDMA1b PROC (_ISR_Handler)/* SDMA Channel Bus Error */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_CPM_SDMA_ERRORb PROC (_ISR_Handler)/* PC12 */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_CPM_PC12b PROC (_ISR_Handler)/* PC13 */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_CPM_PC13b PROC (_ISR_Handler)/* Timer 1 */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_CPM_TIMER1b PROC (_ISR_Handler)/* PC14 */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_CPM_PC14b PROC (_ISR_Handler)/* SCC4 */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_CPM_SCC4b PROC (_ISR_Handler)/* SCC3 */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_CPM_SCC3b PROC (_ISR_Handler)/* SCC2 */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_CPM_SCC2b PROC (_ISR_Handler)/* SCC1 */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_CPM_SCC1b PROC (_ISR_Handler)/* PC15 */mtlr r0lwz r9, IP_9(r1)li r0, PPC_IRQ_CPM_PC15b PROC (_ISR_Handler)