OpenCores
URL https://opencores.org/ocsvn/openrisc/openrisc/trunk

Subversion Repositories openrisc

[/] [openrisc/] [trunk/] [rtos/] [ecos-3.0/] [packages/] [hal/] [mn10300/] [arch/] [current/] [src/] [vectors.S] - Rev 786

Compare with Previous | Blame | View Log 

##=============================================================================
##
##      vectors.S
##
##      MN10300 exception vectors
##
##=============================================================================
## ####ECOSGPLCOPYRIGHTBEGIN####                                            
## -------------------------------------------                              
## This file is part of eCos, the Embedded Configurable Operating System.   
## Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
##
## eCos is free software; you can redistribute it and/or modify it under    
## the terms of the GNU General Public License as published by the Free     
## Software Foundation; either version 2 or (at your option) any later      
## version.                                                                 
##
## eCos is distributed in the hope that it will be useful, but WITHOUT      
## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or    
## FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License    
## for more details.                                                        
##
## You should have received a copy of the GNU General Public License        
## along with eCos; if not, write to the Free Software Foundation, Inc.,    
## 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.            
##
## As a special exception, if other files instantiate templates or use      
## macros or inline functions from this file, or you compile this file      
## and link it with other works to produce a work based on this file,       
## this file does not by itself cause the resulting work to be covered by   
## the GNU General Public License. However the source code for this file    
## must still be made available in accordance with section (3) of the GNU   
## General Public License v2.                                               
##
## This exception does not invalidate any other reasons why a work based    
## on this file might be covered by the GNU General Public License.         
## -------------------------------------------                              
## ####ECOSGPLCOPYRIGHTEND####                                              
##=============================================================================
#######DESCRIPTIONBEGIN####
##
## Author(s):   nickg
## Contributors:        nickg, dmoseley, dhowells
## Date:        1997-10-16
## Purpose:     MN10300 exception vectors
## Description: This file defines the code placed into the exception
##              vectors. It also contains the first level default VSRs
##              that save and restore state for both exceptions and
##              interrupts.
##
######DESCRIPTIONEND####
##
##=============================================================================

#include <pkgconf/hal.h>

#ifdef CYGPKG_REDBOOT
#include <pkgconf/redboot.h>
#endif
        
#ifdef CYGPKG_KERNEL

#include <pkgconf/kernel.h>
        
#endif          

#include <cyg/hal/arch.inc>     
#include <cyg/hal/basetype.h>   
                
        
##-----------------------------------------------------------------------------
        
//      .file   "vectors.S"

#ifdef CYGPKG_CYGMON
##-----------------------------------------------------------------------------
## Macros for Stack handling when running Cygmon
                        
.macro hal_cygmon_switch_app_stack
        #
        # Switch to interrupt stack to handle exception
        #

        # First, save some scratch registers
        mov     a2(a2_save)
        mov     a3,(a3_save)

        # Copy the exception frame
        mov     __cygmon_interrupt_stack-8,a2
        mov     (sp),a3                         // Copy over the saved EPSW
        mov     a3,(a2)
        mov     (4,sp),a3                       // Copy over the saved PC
        mov     a3,(4,a2)

        # Save the pre-exception sp in the register image        
        add     -4,a2                           # space for SP
        mov     sp,a3
        add     8,a3                            # adjust for exception frame
        mov     a3,(a2)

        # Actually switch the stack
        mov     a2,sp

        # Now, restore the scratch registers
        mov     (a2_save),a2
        mov     (a3_save),a3
.endm

.macro hal_cygmon_restore_app_stack
        // For cygmon we are switching stacks immediately on exception.
        // We must wait until the very end before restoring the original stack.

        # Save some scratch registers
        mov     a2,(a2_save)
        mov     a3,(a3_save)

        # We need to restore the application stack pointer, but we also
        # need to restore the exception frame.
        mov     (sp),a2
        add     4,sp                            // remove saved sp
        add     -8,a2                           // adjust for exception frame
        
        mov     (sp),a3                         // Copy the saved EPSW
        mov     a3,(a2)
        mov     (4,sp),a3                       // Copy the saved PC
        mov     a3,(4,a2)
        mov     a2,sp                           // Restore the frame-adjusted SP

        # Restore the scratch registers
        mov     (a2_save),a2
        mov     (a3_save),a3
.endm

#endif // CYGPKG_CYGMON

##-----------------------------------------------------------------------------
#define EXCEPTION_HANDLER(VECTOR,NAME,HANDLER) .org VECTOR; \
NAME##_vector: \
jmp HANDLER
                
        .section ".vectors","ax"
        
        .globl  reset_vector

        .org 0x000      
reset_vector:
        # Reset vector
        jmp     _start

EXCEPTION_HANDLER(0x008, nmi                                    ,__nmi)
EXCEPTION_HANDLER(0x010, trap                                   ,__trap)
EXCEPTION_HANDLER(0x100, ins_tlb_miss_exception                 ,__unknown)
EXCEPTION_HANDLER(0x108, data_tlb_miss_exception                ,__unknown)
EXCEPTION_HANDLER(0x110, ins_access_exception                   ,__unknown)
EXCEPTION_HANDLER(0x118, data_access_exception                  ,__unknown)
EXCEPTION_HANDLER(0x160, priv_ins_exception                     ,__unknown)
EXCEPTION_HANDLER(0x168, unimpl_ins_exception                   ,__unknown)
EXCEPTION_HANDLER(0x170, unimpl_ext_ins_exception               ,__unknown)
EXCEPTION_HANDLER(0x180, misalignment_exception                 ,__unknown)
EXCEPTION_HANDLER(0x188, bus_error                              ,__unknown)
EXCEPTION_HANDLER(0x190, illegal_ins_access_exception           ,__unknown)
EXCEPTION_HANDLER(0x198, illegal_data_access_exception          ,__unknown)
EXCEPTION_HANDLER(0x1a0, iospace_ins_access_exception           ,__unknown)
EXCEPTION_HANDLER(0x1a8, priv_space_ins_access_exception        ,__unknown)
EXCEPTION_HANDLER(0x1b0, priv_space_data_access_exception       ,__unknown)
EXCEPTION_HANDLER(0x1b8, data_space_ins_access_exception        ,__unknown)
EXCEPTION_HANDLER(0x1c0, fpu_disabled_exception                 ,__unknown)
EXCEPTION_HANDLER(0x1c8, fpu_unimplemented_exception            ,__unknown)
EXCEPTION_HANDLER(0x1d0, fpu_operation_exception                ,__unknown)
EXCEPTION_HANDLER(0x200, double_fault                           ,__unknown)
EXCEPTION_HANDLER(0x240, wdt_overflow                           ,__unknown)
EXCEPTION_HANDLER(0x248, nmi_pin                                ,__nmi)
EXCEPTION_HANDLER(0x280, maskable_int0                          ,__unknown)
EXCEPTION_HANDLER(0x288, maskable_int1                          ,__unknown)
EXCEPTION_HANDLER(0x290, maskable_int2                          ,__unknown)
EXCEPTION_HANDLER(0x298, maskable_int3                          ,__unknown)
EXCEPTION_HANDLER(0x2a0, maskable_int4                          ,__unknown)
EXCEPTION_HANDLER(0x2a8, maskable_int5                          ,__unknown)
EXCEPTION_HANDLER(0x2b0, maskable_int6                          ,__unknown)
                
        // We need to put the syscall handler at 0x300
        // For cygmon, we will use the am33 "syscall 0" as the syscall trap.
EXCEPTION_HANDLER(0x300, syscall0                               ,__nmi)
EXCEPTION_HANDLER(0x308, syscall1                               ,__unknown)
EXCEPTION_HANDLER(0x310, syscall2                               ,__unknown)
EXCEPTION_HANDLER(0x318, syscall3                               ,__unknown)
EXCEPTION_HANDLER(0x320, syscall4                               ,__unknown)
EXCEPTION_HANDLER(0x328, syscall5                               ,__unknown)
EXCEPTION_HANDLER(0x330, syscall6                               ,__unknown)
EXCEPTION_HANDLER(0x338, syscall7                               ,__unknown)
EXCEPTION_HANDLER(0x340, syscall8                               ,__unknown)
EXCEPTION_HANDLER(0x348, syscall9                               ,__unknown)
EXCEPTION_HANDLER(0x350, syscalla                               ,__unknown)
EXCEPTION_HANDLER(0x358, syscallb                               ,__unknown)
EXCEPTION_HANDLER(0x360, syscallc                               ,__unknown)
EXCEPTION_HANDLER(0x368, syscalld                               ,__unknown)
EXCEPTION_HANDLER(0x370, syscalle                               ,__unknown)
EXCEPTION_HANDLER(0x378, syscallf                               ,__unknown)

##-----------------------------------------------------------------------------
## unknown interrupt or exception vector
__unknown:
#ifdef CYG_HAL_HANDLE_UNKNOWN_INT_DEFINED
        hal_handle_unknown_int
#endif

##-----------------------------------------------------------------------------
## NMI vector

        .globl __nmi
__nmi:
#ifdef CYGPKG_CYGMON
        hal_cygmon_switch_app_stack
#else
        add     -4,sp                           # space for SP
#endif
        hal_cpu_save_all                        # push all registers
        mov     (_hal_vsr_table+28),a0 
        jmp     (a0)

##-----------------------------------------------------------------------------
## Trap vector

        .globl __trap
__trap:
#ifdef CYGPKG_CYGMON
        add     -4,sp                           # space for PSW
        hal_cygmon_switch_app_stack
#else
        add     -8,sp                           # space for SP and PSW
#endif
        hal_cpu_save_all                        # push all registers
        mov     (_hal_vsr_table+32),a0
        jmp     (a0)
                
##-----------------------------------------------------------------------------
## Macro to define a hardware VSR       

        .macro  hardware_vector name
        .globl  __hardware_vector_\name
__hardware_vector_\name:
#ifdef CYGPKG_CYGMON
        hal_cygmon_switch_app_stack
#else
        add     -4,sp                           # space for SP
#endif
        hal_cpu_save_all
        mov     \name,d0                        # d0 = vector id
        mov     d0,(0,sp)                       # save in dummy stack loc
        mov     _hal_vsr_table,a0               # a0 = vsr table
        add     \name<<2,a0                     # a0 = &required vsr
        mov     (a0),a0                         # a0 = required vsr
        jmp     (a0)                            # go there
        .endm   

##-----------------------------------------------------------------------------
## Hardware Vectors. These are pointed to by the registers in
## mn10300_interrupt_vectors and must be in the range 0x4000XXXX.

        hardware_vector 0
        hardware_vector 1
        hardware_vector 2
        hardware_vector 3
        hardware_vector 4
        hardware_vector 5
        hardware_vector 6
                
##-----------------------------------------------------------------------------
## Startup code
                        
        .text

        .globl  _start
_start:

#ifdef HAL_EARLY_INIT
        HAL_EARLY_INIT
#endif
        # set up stack

        mov     __interrupt_stack,a0
        sub     8,a0
        mov     a0,sp

        # Initialize hardware
        hal_cpu_init
        hal_mmu_init
        hal_memc_init
        hal_diag_init
        hal_intc_init
        hal_cache_init
        hal_timer_init
        hal_mon_init

#ifdef CYG_HAL_STARTUP_ROM
        
        # Copy data from ROM to RAM

        mov     __rom_data_start,a0
        mov     __ram_data_end,a1
        mov     __ram_data_start,a2
        
        cmp     a2,a1
        beq     8f
1:      
        movbu   (a0),d0
        movbu   d0,(a2)
        inc     a0
        inc     a2
        cmp     a2,a1
        bne     1b      
8:      
        
#endif
        
        # Clear BSS
        mov     __bss_start,a0
        mov     __bss_end,a1

        cmp     a0,a1
        beq     8f
        clr     d0
1:      
        movbu   d0,(a0)
        inc     a0
        cmp     a0,a1
        bne     1b      
8:      

        # Call variant and platform HAL
        # initialization routines.

        .extern _hal_variant_init
        call    _hal_variant_init,[],0

        .extern _hal_platform_init
        call    _hal_platform_init,[],0
        
        # Call constructors

        .extern _cyg_hal_invoke_constructors
        call    _cyg_hal_invoke_constructors,[],0

#ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
        .extern _initialize_stub
        call    _initialize_stub,[],0
#endif

#ifdef CYGDBG_HAL_MIPS_DEBUG_GDB_CTRLC_SUPPORT
        .extern hal_ctrlc_isr_init
        call    hal_ctrlc_isr_init,[],0
#endif

        # Call cyg_start
        clr     d0
        mov     d0,(4,sp)
        
        .extern _cyg_start
        call    _cyg_start,[],0

9:
        bra     9b              # Loop if we return

##-----------------------------------------------------------------------------
## The following macros are defined depending on whether the HAL is configured
## to support the kernel or not. 

#ifdef CYGFUN_HAL_COMMON_KERNEL_SUPPORT
        
        .extern _cyg_scheduler_sched_lock
        
        # Increment the scheduler lock
                        
        .macro increment_sched_lock reg=d0
        mov     (_cyg_scheduler_sched_lock),\reg
        inc     \reg
        mov     \reg,(_cyg_scheduler_sched_lock)
        .endm

#else
        
        .macro increment_sched_lock reg=d0
        .endm

#endif          

##-----------------------------------------------------------------------------
## Default interrupt VSR

        .text
        .globl  __default_interrupt_vsr
__default_interrupt_vsr:

        # We come here with all the registers pushed
        # onto the stack.

        hal_diag_intr_start
        
        increment_sched_lock
        
#if defined(CYGPKG_CYGMON)
        // For Cygmon, we saved this back when we originally switched stacks.
        mov     (sp),a2                         # A2 = saved thread state
#elif defined(CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK)
        # Increment interrupt nesting counter
        mov     __interrupt_stack,a0            # A0 = interrupt stack top
        mov     sp,a2                           # A2 = SP
        cmp     __interrupt_stack_base,a2       # compare with base of stack
        blt     1f                              # if lt switch to int stack
        cmp     a0,a2                           # compare sp with stack top
        ble     8f                              # if le already on istack
1:
        mov     a0,sp                           # switch to new SP
8:
        movm    [a2],(sp)                       # save old SP

#else
        mov     sp,a2                           # A2 = saved thread state
#endif

        # Here A2 -> saved thread state on the threads own
        # stack. We will be executing either on the same stack
        # or on the interrupt stack, depending on config options.
                
        hal_intc_decode d3,a3,d0

        # Here D3 contains the table byte offset of the vector to
        # call.

#if defined(CYGPKG_KERNEL_INSTRUMENT) && defined(CYGDBG_KERNEL_INSTRUMENT_INTR)

        # Call cyg_instrument to record that this interrupt is being raised.

        .extern _cyg_instrument         
        add     -16,sp                          # make space for return link + args     
        mov     0x0301,d0                       # d0 = type = INTR,RAISE
        mov     (0,a2),d1                       # d1 = arg1 = vector
        mov     d3,(12,sp)                      # (12,sp) = arg2 = table offset
        calls   _cyg_instrument                 # call instrumentation
        add     16,sp                           # pop space
        
#endif          

#ifdef CYGDBG_HAL_DEBUG_GDB_BREAK_SUPPORT
        .extern _cyg_hal_gdb_isr
        add     -16,sp                          # make space for return link + args
        mov     (0,a2),d0                       # d0 = vector
        mov     (SAVED_CONTEXT_PC_OFFSET,a2),d1 # d1 = pc
        calls   _cyg_hal_gdb_isr                # call GDB isr function
        cmp     0x00,d0                         # Call ISR proper?
        beq     2f                              # (d0 is 0 when skipping
                                                #  to avoid DSR call)
        add     16,sp                           # pop space
#endif
        
#ifdef CYGSEM_HAL_COMMON_INTERRUPTS_ALLOW_NESTING

        # To allow nested interrupts, we set the IE bit. We do
        # not touch the IPL bits, so only higher priority interrupts
        # will be nested on top of us. Also, new interrupts will not
        # be delivered until the ISR calls 
        # Cyg_Interrupt::acknowledge_interrupt(). At some future point
        # we may want to do the ack stuff here to allow immediate nesting.
        
        or      0x0800,psw
        
#endif
#if defined(CYGDBG_HAL_DEBUG_GDB_CTRLC_SUPPORT)

        # If we have Ctrl-C support enabled, save a pointer to the
        # saved CPU state here so we can plant a breakpoint there if
        # this is a ^C.
        
        .extern _hal_saved_interrupt_state
        mov     a2,(_hal_saved_interrupt_state)
        
#endif
                
        mov     _hal_interrupt_handlers,a0      # a0 = isr table
        mov     (d3,a0),a0                      # a0 = isr
        
        mov     _hal_interrupt_data,a1          # a1 = data table
        mov     (d3,a1),d1                      # d1 = isr data

        mov     (0,a2),d0                       # d0 = vector. (d3 is...
                                                # ...adjusted for table reads)

        add     -16,sp                          # make space for return link

        calls   (a0)                            # call isr

        # on return d0 bit 1 will indicate whether a DSR is
        # to be posted. Pass this together with a pointer to
        # the interrupt object we have just used to the
        # interrupt tidy up routine.
        
        # D3 is defined to be saved across procedure calls, and
        # should still contain the vector byte index. Similarly,
        # A2 should still point to the saved machine state.

#ifdef CYGDBG_HAL_DEBUG_GDB_BREAK_SUPPORT
        # If interrupt was caused by GDB, the ISR call above
        # is skipped by jumping here.
2:
#endif

#if defined(CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK) && !defined(CYGPKG_CYGMON)

        # If we are returning from the last nested interrupt, move back
        # to the thread stack. interrupt_end() must be called on the
        # thread stack since it potentially causes a context switch.
        
        add     16,sp                           # pop call frame from int stack
        movm    (sp),[a3]                       # pop old sp
        mov     a3,sp                           # put in SP

        add     -16,sp                          # make call frame for call

#endif          

#ifdef CYGFUN_HAL_COMMON_KERNEL_SUPPORT
        
        # We only need to call _interrupt_end() when there is a kernel
        # present to do any tidying up.
                
        # Using the vector offset in D3, get the interrupt object pointer
        # into D1.
        mov     _hal_interrupt_objects,a0       # a0 = object table
        mov     (d3,a0),d1                      # d1 = object

        # Even when this is not the last nested interrupt, we must call
        # _interrupt_end() to post the DSR and decrement the scheduler
        # lock.
                
        mov     a2,(12,sp)                      # arg3 = saved state.
        
        calls   _interrupt_end                  # call interrupt end fn         
#endif

        add     16,sp                           # pop return link

#       show_interrupts

        hal_diag_restore
        
        hal_cpu_load_all
#ifdef CYGPKG_CYGMON
        hal_cygmon_restore_app_stack
#else
        add     4,sp
#endif
        rti                                     # and return

##-----------------------------------------------------------------------------
## Execute pending DSRs on the interrupt stack with interrupts enabled.
## Note: this can only be called from code running on a thread stack
        
#ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
        .extern _cyg_interrupt_call_pending_DSRs
        .global _hal_interrupt_stack_call_pending_DSRs

_hal_interrupt_stack_call_pending_DSRs:         
        movm    [d2,a2],(sp)                    # save some work regs
        mov     __interrupt_stack,a0            # interrupt stack pointer
        mov     sp,a2                           # save current SP
        mov     a0,sp                           # set SP to interrupt stack
        hal_cpu_get_psw d2                      # save PSW
        hal_cpu_int_enable                      # enable interrupts

        # Call kernel code to invoke DSRs.
        calls   _cyg_interrupt_call_pending_DSRs        

        # On return the old SP in a2 and the old PSW in d2 will 
        # have been preserved by the calling conventions.
        
        hal_cpu_int_merge d2                    # Restore previous PSW
        mov     a2,sp                           # restore old SP
        movm    (sp),[d2,a2]                    # Retrieve old work regs
        ret     [],0                            # and return
                
#endif          
                
##-----------------------------------------------------------------------------
## Default NMI VSR

        .globl  _cyg_hal_exception_handler
        
        .text
        .globl  __default_nmi_vsr
__default_nmi_vsr:

        # We come here with all the registers saved
        # on the stack.

#ifdef CYG_HAL_DIAG_EXCPT_END
        hal_diag_excpt_start
#endif
        
        # Decode the cause of the NMI and cancel all the bits in all
        # the registers. We need to clear any bits set in the ISR and
        # then clear any bits set in the NMICR. Note that we can only 
        # access the ISR if the DCR:DE bit is set. 
        
        movhu   (NMICR),d0                      # D0 = NMI Control register

        movhu   (DCR),d1                        # D1 = Debug Control Register
        mov     d1,d2                           # D2 = copy of DCR
        movhu   (ISR),d3                        # D3 = Interrupt Status Register

        or      DCR_DE,d1                       # Set DE bit    
        movhu   d1,(DCR)                        

        movhu   d3,(ISR)                        # clear ISR bits

        movhu   d2,(DCR)                        # restore DCR to original value

        movhu   d0,(NMICR)                      # clear NMI bits
        and     0x7,d0                          # LS 3 bits only

        mov     hal_lsbit_table,a0              
        movbu   (d0,a0),d1                      # D1 = NMI code
                                                ## 0 = NMI
                                                ## 1 = Watchdog
                                                ## 2 = System Error

        add     9,d1                            # offset into exception number space
        
#if defined(CYGPKG_CYGMON) || defined(CYGSEM_REDBOOT_BSP_SYSCALLS)
        # Check to see if this was a syscall.
        # If so, set d1 appropriately
#define TBR 0xC0000024
        mov     (TBR), d0
        and     0x00FFFFFF, d0
        cmp     0x300, d0
        bne     0f

        # This was apparently a syscall.
        mov     SIGSYSCALL, d1

0:      
#endif
        hal_cpu_clear_nmid

        mov     d1,(sp)                         # save initial vector in spare save slot
        
        mov     sp,a1                           # a1 = saved state

        mov     a1,d0                           # d0 = arg1 = saved state

        add     -16,sp                          # return link + args
        mov     d3,d1                           # d1 = arg2 = ISR value

        calls   _cyg_hal_exception_handler      # call C code

        add     16,sp                           # pop args

#ifdef CYG_HAL_DIAG_EXCPT_END
        hal_diag_excpt_end
#endif

        hal_cpu_load_all

#ifdef CYGPKG_CYGMON
        hal_cygmon_restore_app_stack
#else
        add     4,sp
#endif

        rti

        .globl hal_lsbit_table
hal_lsbit_table:
        .byte   0, 0, 1, 0
        .byte   2, 0, 1, 0
        .byte   3, 0, 1, 0
        .byte   2, 0, 1, 0
        
#ifdef CYGPKG_CYGMON
        .section ".bss"
d0_save:
        .long   0
d1_save:
        .long   0
d2_save:
        .long   0
d3_save:
        .long   0
a0_save:
        .long   0
a1_save:
        .long   0
a2_save:
        .long   0
a3_save:
        .long   0
sp_save:
        .long   0
#endif

##-----------------------------------------------------------------------------
## Default TRAP VSR

        .text
        .globl  __default_trap_vsr
__default_trap_vsr:

#ifdef CYG_HAL_DIAG_EXCPT_END
        hal_diag_excpt_start
#endif

        # We come here with all the registers saved
        # on the stack.
        mov     8,d1
        mov     d1,(sp)                         # set the VSR vector number
        mov     sp,a1                           # a1 = saved state
        mov     a1,d0                           # d0 = arg1 = saved state

        add     -16,sp                          # return link + arg
        mov     3,d1                            # d1 = arg2 = ISR value (3 == TRAP trap)
        calls   _cyg_hal_exception_handler      # call C code
        add     16,sp                           # pop args

#ifdef CYG_HAL_DIAG_EXCPT_END
        hal_diag_excpt_end
#endif
        hal_cpu_load_all
#ifdef CYGPKG_CYGMON
        hal_cygmon_restore_app_stack
        add     4,sp
#else
        add     8,sp
#endif
        rets

##-----------------------------------------------------------------------------
## VSR table. The VSRs pointed to by this table are called from the stubs
## connected to the hardware.

#ifndef CYG_HAL_MN10300_VSR_TABLE_DEFINED
        
        .data

        .globl  _hal_vsr_table
_hal_vsr_table: 
        .long   __default_interrupt_vsr
        .long   __default_interrupt_vsr
        .long   __default_interrupt_vsr
        .long   __default_interrupt_vsr
        .long   __default_interrupt_vsr
        .long   __default_interrupt_vsr
        .long   __default_interrupt_vsr
        .long   __default_nmi_vsr
        .long   __default_trap_vsr

        .long   __default_nmi_vsr
        .long   __default_nmi_vsr
        .long   __default_nmi_vsr
        
        .long   __default_nmi_vsr
        .long   __default_nmi_vsr
        .long   __default_nmi_vsr
        .long   __default_nmi_vsr
        .long   __default_nmi_vsr
        .long   __default_nmi_vsr
        .long   __default_nmi_vsr
        .long   __default_nmi_vsr
        .long   __default_nmi_vsr
        .long   __default_nmi_vsr
        .long   __default_nmi_vsr
        .long   __default_nmi_vsr
        .long   __default_nmi_vsr
        .long   __default_nmi_vsr
        .long   __default_nmi_vsr
        .long   __default_nmi_vsr
#endif
        
##-----------------------------------------------------------------------------
## Interrupt tables
        
        .data

        .extern _hal_default_isr
        
        .globl  _hal_interrupt_handlers
_hal_interrupt_handlers:
        .rept   CYG_ISR_TABLE_SIZE
        .long   _hal_default_isr
        .endr
        
        .globl  _hal_interrupt_data
_hal_interrupt_data:
        .rept   CYG_ISR_TABLE_SIZE
        .long   0
        .endr
        
        .globl  _hal_interrupt_objects
_hal_interrupt_objects:
        .rept   CYG_ISR_TABLE_SIZE
        .long   0
        .endr
        
                        
##-----------------------------------------------------------------------------
## Temporary interrupt stack
        
        .section ".bss"

        .balign 16
        .global _cyg_interrupt_stack_base
_cyg_interrupt_stack_base:
__interrupt_stack_base:
        .rept CYGNUM_HAL_COMMON_INTERRUPTS_STACK_SIZE
        .byte 0
        .endr
        .balign 16
        .global _cyg_interrupt_stack
_cyg_interrupt_stack:
__interrupt_stack:
        
#ifdef CYGPKG_CYGMON
        .balign 16
        .global __cygmon_interrupt_stack_base
__cygmon_interrupt_stack_base:
        .rept CYGNUM_HAL_COMMON_INTERRUPTS_STACK_SIZE
        .byte 0
        .endr
        .balign 16
        .global __cygmon_interrupt_stack
__cygmon_interrupt_stack:
#endif

        .long   0,0,0,0,0,0,0,0 

##-----------------------------------------------------------------------------

        .data
        hal_diag_data

##-----------------------------------------------------------------------------
## end of vectors.S

Compare with Previous | Blame | View Log

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.