| Line 9... |
Line 9... |
_reset:
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_reset:
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l.nop
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l.nop
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l.j _reset_except
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l.j _reset_except
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l.nop
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l.nop
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*/
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*/
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.org 0x000
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_except_200:
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/* This cannot be a regular function because it would waste the return register r9 of the interrupted procedure. */
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l.nop
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/* Furthermore, if this would be a function and l.j handler would be outside of this, the return register set here would be use upon return of this function. */
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l.addi r1,r1,-244 //free 29 words (29 x 4 = 112) + 4 because stack points to contained data (stack is r1)
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/* However, the desired behavior is to finish the handler and let the return of the service routine simply restore the registers and return to the interrupted procedure. */
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//plus 128 bytes not to mess with the previous frame pointer (32 register x 4 bytes = 128 bytes ) (required by C++ multiple threading)
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#define intr_handler(handler) \
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l.sw 0x18(r1),r9 //save register r9(return addr) to stack
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l.nop ;\
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l.jal store_regs //save registers r3-r31 (except r9) to stack (r9 is changed here)
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l.addi r1,r1,-244 /*free 29 words (29 x 4 = 112) + 4 because stack points to contained data (stack is r1)*/;\
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/*plus 128 bytes not to mess with the previous frame pointer (32 register x 4 bytes = 128 bytes ) (required by C++ multiple threading) */;\
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l.sw 0x18(r1),r9 /*save register r9(return addr) to stack*/;\
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l.jal store_regs /*save registers r3-r31 (except r9) to stack (r9 is changed here)*/;\
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l.nop ;\
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;\
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l.movhi r9,hi(end_except) /*set return addr to end_except instruction*/;\
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l.ori r9,r9,lo(end_except)/*set return addr to end_except instruction*/;\
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l.j handler ;\
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l.nop
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l.nop
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l.movhi r9,hi(end_except) //set return addr to end_except instruction
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.org 0x000
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l.ori r9,r9,lo(end_except) //set return addr to end_except instruction
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_except_200:
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l.j buserr_except
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intr_handler(buserr_except)
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l.nop
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.org 0x100
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.org 0x100
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_except_300:
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_except_300:
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l.nop
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intr_handler(dpf_except)
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l.addi r1,r1,-244 //free 29 words (29 x 4 = 112) + 4 because stack points to contained data (stack is r1)
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//plus 128 bytes not to mess with the previous frame pointer (32 register x 4 bytes = 128 bytes ) (required by C++ multiple threading)
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l.sw 0x18(r1),r9 //save register r9(return addr) to stack
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l.jal store_regs //save registers r3-r31 (except r9) to stack (r9 is changed here)
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l.nop
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l.movhi r9,hi(end_except) //set return addr to end_except instruction
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l.ori r9,r9,lo(end_except) //set return addr to end_except instruction
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l.j dpf_except
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l.nop
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.org 0x200
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.org 0x200
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_except_400:
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_except_400:
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l.nop
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intr_handler(ipf_except)
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l.addi r1,r1,-244 //free 29 words (29 x 4 = 112) + 4 because stack points to contained data (stack is r1)
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//plus 128 bytes not to mess with the previous frame pointer (32 register x 4 bytes = 128 bytes ) (required by C++ multiple threading)
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l.sw 0x18(r1),r9 //save register r9(return addr) to stack
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l.jal store_regs //save registers r3-r31 (except r9) to stack (r9 is changed here)
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l.nop
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l.movhi r9,hi(end_except) //set return addr to end_except instruction
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l.ori r9,r9,lo(end_except) //set return addr to end_except instruction
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l.j ipf_except
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l.nop
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.org 0x300
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.org 0x300
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_except_500:
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_except_500:
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l.nop
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intr_handler(tick_except)
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l.addi r1,r1,-244 //free 29 words (29 x 4 = 112) + 4 because stack points to contained data (stack is r1)
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//plus 128 bytes not to mess with the previous frame pointer (32 register x 4 bytes = 128 bytes ) (required by C++ multiple threading)
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l.sw 0x18(r1),r9 //save register r9(return addr) to stack
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l.jal store_regs //save registers r3-r31 (except r9) to stack (r9 is changed here)
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l.nop
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l.movhi r9,hi(end_except) //set return addr to end_except instruction
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l.ori r9,r9,lo(end_except) //set return addr to end_except instruction
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l.j tick_except
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l.nop
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.org 0x400
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.org 0x400
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_except_600:
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_except_600:
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l.nop
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intr_handler(align_except)
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l.addi r1,r1,-244 //free 29 words (29 x 4 = 112) + 4 because stack points to contained data (stack is r1)
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//plus 128 bytes not to mess with the previous frame pointer (32 register x 4 bytes = 128 bytes ) (required by C++ multiple threading)
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l.sw 0x18(r1),r9 //save register r9(return addr) to stack
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l.jal store_regs //save registers r3-r31 (except r9) to stack (r9 is changed here)
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l.nop
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l.movhi r9,hi(end_except) //set return addr to end_except instruction
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l.ori r9,r9,lo(end_except) //set return addr to end_except instruction
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l.j align_except
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l.nop
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.org 0x500
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.org 0x500
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_except_700:
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_except_700:
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l.nop
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intr_handler(illegal_except)
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l.addi r1,r1,-244 //free 29 words (29 x 4 = 112) + 4 because stack points to contained data (stack is r1)
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//plus 128 bytes not to mess with the previous frame pointer (32 register x 4 bytes = 128 bytes ) (required by C++ multiple threading)
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l.sw 0x18(r1),r9 //save register r9(return addr) to stack
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l.jal store_regs //save registers r3-r31 (except r9) to stack (r9 is changed here)
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l.nop
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l.movhi r9,hi(end_except) //set return addr to end_except instruction
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l.ori r9,r9,lo(end_except) //set return addr to end_except instruction
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l.j illegal_except
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l.nop
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.org 0x600
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.org 0x600
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_except_800:
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_except_800:
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l.nop
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intr_handler(ext_except)
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l.addi r1,r1,-244 //free 29 words (29 x 4 = 112) + 4 because stack points to contained data (stack is r1)
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//plus 128 bytes not to mess with the previous frame pointer (32 register x 4 bytes = 128 bytes ) (required by C++ multiple threading)
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l.sw 0x18(r1),r9 //save register r9(return addr) to stack
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l.jal store_regs //save registers r3-r31 (except r9) to stack (r9 is changed here)
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l.nop
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l.movhi r9,hi(end_except) //set return addr to end_except instruction
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l.ori r9,r9,lo(end_except) //set return addr to end_except instruction
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l.j ext_except //jmp to C interrupt handler (returns later to end_except)
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l.nop
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.org 0x700
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.org 0x700
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_except_900:
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_except_900:
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l.nop
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intr_handler(dtlbmiss_except)
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l.addi r1,r1,-244 //free 29 words (29 x 4 = 112) + 4 because stack points to contained data (stack is r1)
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//plus 128 bytes not to mess with the previous frame pointer (32 register x 4 bytes = 128 bytes ) (required by C++ multiple threading)
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l.sw 0x18(r1),r9 //save register r9(return addr) to stack
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l.jal store_regs //save registers r3-r31 (except r9) to stack (r9 is changed here)
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l.nop
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l.movhi r9,hi(end_except) //set return addr to end_except instruction
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l.ori r9,r9,lo(end_except) //set return addr to end_except instruction
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l.j dtlbmiss_except
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l.nop
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.org 0x800
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.org 0x800
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_except_a00:
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_except_a00:
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l.nop
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intr_handler(itlbmiss_except)
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l.addi r1,r1,-244 //free 29 words (29 x 4 = 112) + 4 because stack points to contained data (stack is r1)
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//plus 128 bytes not to mess with the previous frame pointer (32 register x 4 bytes = 128 bytes ) (required by C++ multiple threading)
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l.sw 0x18(r1),r9 //save register r9(return addr) to stack
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l.jal store_regs //save registers r3-r31 (except r9) to stack (r9 is changed here)
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l.nop
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l.movhi r9,hi(end_except) //set return addr to end_except instruction
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l.ori r9,r9,lo(end_except) //set return addr to end_except instruction
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l.j itlbmiss_except
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l.nop
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.org 0x900
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.org 0x900
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_except_b00:
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_except_b00:
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l.nop
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intr_handler(range_except)
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l.addi r1,r1,-244 //free 29 words (29 x 4 = 112) + 4 because stack points to contained data (stack is r1)
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//plus 128 bytes not to mess with the previous frame pointer (32 register x 4 bytes = 128 bytes ) (required by C++ multiple threading)
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l.sw 0x18(r1),r9 //save register r9(return addr) to stack
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l.jal store_regs //save registers r3-r31 (except r9) to stack (r9 is changed here)
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l.nop
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l.movhi r9,hi(end_except) //set return addr to end_except instruction
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l.ori r9,r9,lo(end_except) //set return addr to end_except instruction
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l.j range_except
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l.nop
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.org 0xa00
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.org 0xa00
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_except_c00:
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_except_c00:
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l.nop
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intr_handler(syscall_except)
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l.addi r1,r1,-244 //free 29 words (29 x 4 = 112) + 4 because stack points to contained data (stack is r1)
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//plus 128 bytes not to mess with the previous frame pointer (32 register x 4 bytes = 128 bytes ) (required by C++ multiple threading)
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l.sw 0x18(r1),r9 //save register r9(return addr) to stack
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l.jal store_regs //save registers r3-r31 (except r9) to stack (r9 is changed here)
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l.nop
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l.movhi r9,hi(end_except) //set return addr to end_except instruction
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l.ori r9,r9,lo(end_except) //set return addr to end_except instruction
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l.j syscall_except
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l.nop
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.org 0xb00
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.org 0xb00
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_except_d00:
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_except_d00:
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l.nop
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intr_handler(res1_except)
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l.addi r1,r1,-244 //free 29 words (29 x 4 = 112) + 4 because stack points to contained data (stack is r1)
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//plus 128 bytes not to mess with the previous frame pointer (32 register x 4 bytes = 128 bytes ) (required by C++ multiple threading)
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l.sw 0x18(r1),r9 //save register r9(return addr) to stack
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l.jal store_regs //save registers r3-r31 (except r9) to stack (r9 is changed here)
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l.nop
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l.movhi r9,hi(end_except) //set return addr to end_except instruction
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l.ori r9,r9,lo(end_except) //set return addr to end_except instruction
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l.j res1_except
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l.nop
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.org 0xc00
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.org 0xc00
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_except_e00:
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_except_e00:
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l.nop
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intr_handler(trap_except)
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l.addi r1,r1,-244 //free 29 words (29 x 4 = 112) + 4 because stack points to contained data (stack is r1)
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//plus 128 bytes not to mess with the previous frame pointer (32 register x 4 bytes = 128 bytes ) (required by C++ multiple threading)
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l.sw 0x18(r1),r9 //save register r9(return addr) to stack
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l.jal store_regs //save registers r3-r31 (except r9) to stack (r9 is changed here)
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l.nop
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l.movhi r9,hi(end_except) //set return addr to end_except instruction
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l.ori r9,r9,lo(end_except) //set return addr to end_except instruction
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l.j trap_except
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l.nop
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.org 0xd00
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.org 0xd00
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_except_f00:
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_except_f00:
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l.nop
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intr_handler(res2_except)
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l.addi r1,r1,-244 //free 29 words (29 x 4 = 112) + 4 because stack points to contained data (stack is r1)
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//plus 128 bytes not to mess with the previous frame pointer (32 register x 4 bytes = 128 bytes ) (required by C++ multiple threading)
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l.sw 0x18(r1),r9 //save register r9(return addr) to stack
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l.jal store_regs //save registers r3-r31 (except r9) to stack (r9 is changed here)
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l.nop
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l.movhi r9,hi(end_except) //set return addr to end_except instruction
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l.ori r9,r9,lo(end_except) //set return addr to end_except instruction
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l.j res2_except
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l.nop
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store_regs: //save registers r3-r31 (except r9) to stack
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store_regs: //save registers r3-r31 (except r9) to stack
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l.sw 0x00(r1),r3
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l.sw 0x00(r1),r3
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l.sw 0x04(r1),r4
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l.sw 0x04(r1),r4
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l.sw 0x08(r1),r5
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l.sw 0x08(r1),r5
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