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rfajardo |
#include "spr_defs.h"
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// Linked from 0x200, so subtract 0x200 from each .org
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.section .vectors, "ax"
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/*
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.org 0x100
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_reset:
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47 |
rfajardo |
l.nop
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l.j _reset_except
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l.nop
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2 |
rfajardo |
*/
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.org 0x000
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_except_200:
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l.nop
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47 |
rfajardo |
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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2 |
rfajardo |
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47 |
rfajardo |
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 buserr_except
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l.nop
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rfajardo |
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.org 0x100
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_except_300:
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l.nop
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47 |
rfajardo |
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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2 |
rfajardo |
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47 |
rfajardo |
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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rfajardo |
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.org 0x200
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_except_400:
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l.nop
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47 |
rfajardo |
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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rfajardo |
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rfajardo |
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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rfajardo |
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.org 0x300
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_except_500:
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l.nop
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rfajardo |
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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rfajardo |
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rfajardo |
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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rfajardo |
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.org 0x400
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_except_600:
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l.nop
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rfajardo |
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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rfajardo |
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rfajardo |
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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rfajardo |
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.org 0x500
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_except_700:
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l.nop
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rfajardo |
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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rfajardo |
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rfajardo |
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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rfajardo |
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.org 0x600
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_except_800:
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l.nop
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rfajardo |
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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2 |
rfajardo |
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rfajardo |
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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rfajardo |
l.nop
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.org 0x700
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_except_900:
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l.nop
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47 |
rfajardo |
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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2 |
rfajardo |
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rfajardo |
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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2 |
rfajardo |
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.org 0x800
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_except_a00:
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l.nop
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rfajardo |
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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2 |
rfajardo |
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47 |
rfajardo |
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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2 |
rfajardo |
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.org 0x900
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_except_b00:
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l.nop
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47 |
rfajardo |
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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| 155 |
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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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| 156 |
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l.sw 0x18(r1),r9 //save register r9(return addr) to stack
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| 157 |
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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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2 |
rfajardo |
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| 160 |
47 |
rfajardo |
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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| 162 |
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l.j range_except
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l.nop
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2 |
rfajardo |
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| 165 |
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.org 0xa00
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| 166 |
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| 167 |
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_except_c00:
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l.nop
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| 169 |
47 |
rfajardo |
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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| 170 |
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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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| 171 |
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l.sw 0x18(r1),r9 //save register r9(return addr) to stack
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| 172 |
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l.jal store_regs //save registers r3-r31 (except r9) to stack (r9 is changed here)
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| 173 |
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l.nop
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| 174 |
2 |
rfajardo |
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| 175 |
47 |
rfajardo |
l.movhi r9,hi(end_except) //set return addr to end_except instruction
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| 176 |
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l.ori r9,r9,lo(end_except) //set return addr to end_except instruction
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| 177 |
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l.j syscall_except
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| 178 |
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l.nop
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| 179 |
2 |
rfajardo |
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| 180 |
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.org 0xb00
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| 181 |
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| 182 |
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_except_d00:
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| 183 |
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l.nop
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| 184 |
47 |
rfajardo |
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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| 185 |
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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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| 186 |
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l.sw 0x18(r1),r9 //save register r9(return addr) to stack
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| 187 |
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l.jal store_regs //save registers r3-r31 (except r9) to stack (r9 is changed here)
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| 188 |
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l.nop
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| 189 |
2 |
rfajardo |
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| 190 |
47 |
rfajardo |
l.movhi r9,hi(end_except) //set return addr to end_except instruction
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| 191 |
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l.ori r9,r9,lo(end_except) //set return addr to end_except instruction
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| 192 |
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l.j res1_except
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| 193 |
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l.nop
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| 194 |
2 |
rfajardo |
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| 195 |
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.org 0xc00
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| 196 |
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| 197 |
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_except_e00:
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| 198 |
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l.nop
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| 199 |
47 |
rfajardo |
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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| 200 |
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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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| 201 |
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l.sw 0x18(r1),r9 //save register r9(return addr) to stack
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| 202 |
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l.jal store_regs //save registers r3-r31 (except r9) to stack (r9 is changed here)
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| 203 |
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l.nop
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| 204 |
2 |
rfajardo |
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| 205 |
47 |
rfajardo |
l.movhi r9,hi(end_except) //set return addr to end_except instruction
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| 206 |
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l.ori r9,r9,lo(end_except) //set return addr to end_except instruction
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| 207 |
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l.j trap_except
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| 208 |
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l.nop
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| 209 |
2 |
rfajardo |
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| 210 |
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.org 0xd00
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| 211 |
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| 212 |
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_except_f00:
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| 213 |
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l.nop
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| 214 |
47 |
rfajardo |
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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| 215 |
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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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| 216 |
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l.sw 0x18(r1),r9 //save register r9(return addr) to stack
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| 217 |
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l.jal store_regs //save registers r3-r31 (except r9) to stack (r9 is changed here)
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| 218 |
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l.nop
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| 219 |
2 |
rfajardo |
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| 220 |
47 |
rfajardo |
l.movhi r9,hi(end_except) //set return addr to end_except instruction
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| 221 |
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l.ori r9,r9,lo(end_except) //set return addr to end_except instruction
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| 222 |
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l.j res2_except
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| 223 |
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l.nop
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| 224 |
2 |
rfajardo |
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| 225 |
47 |
rfajardo |
store_regs: //save registers r3-r31 (except r9) to stack
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| 226 |
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l.sw 0x00(r1),r3
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| 227 |
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l.sw 0x04(r1),r4
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| 228 |
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l.sw 0x08(r1),r5
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| 229 |
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l.sw 0x0c(r1),r6
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| 230 |
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l.sw 0x10(r1),r7
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| 231 |
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l.sw 0x14(r1),r8
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| 232 |
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l.sw 0x1c(r1),r10
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| 233 |
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l.sw 0x20(r1),r11
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| 234 |
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l.sw 0x24(r1),r12
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| 235 |
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l.sw 0x28(r1),r13
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| 236 |
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l.sw 0x2c(r1),r14
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| 237 |
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l.sw 0x30(r1),r15
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| 238 |
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l.sw 0x34(r1),r16
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| 239 |
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l.sw 0x38(r1),r17
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| 240 |
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l.sw 0x3c(r1),r18
|
| 241 |
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l.sw 0x40(r1),r19
|
| 242 |
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l.sw 0x44(r1),r20
|
| 243 |
|
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l.sw 0x48(r1),r21
|
| 244 |
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l.sw 0x4c(r1),r22
|
| 245 |
|
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l.sw 0x50(r1),r23
|
| 246 |
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l.sw 0x54(r1),r24
|
| 247 |
|
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l.sw 0x58(r1),r25
|
| 248 |
|
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l.sw 0x5c(r1),r26
|
| 249 |
|
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l.sw 0x60(r1),r27
|
| 250 |
|
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l.sw 0x64(r1),r28
|
| 251 |
|
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l.sw 0x68(r1),r29
|
| 252 |
|
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l.sw 0x6c(r1),r30
|
| 253 |
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l.sw 0x70(r1),r31
|
| 254 |
|
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l.jr r9
|
| 255 |
|
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l.nop
|
| 256 |
2 |
rfajardo |
|
| 257 |
47 |
rfajardo |
end_except: //load back registers from stack r3-r31
|
| 258 |
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l.lwz r3,0x00(r1)
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| 259 |
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l.lwz r4,0x04(r1)
|
| 260 |
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l.lwz r5,0x08(r1)
|
| 261 |
|
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l.lwz r6,0x0c(r1)
|
| 262 |
|
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l.lwz r7,0x10(r1)
|
| 263 |
|
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l.lwz r8,0x14(r1)
|
| 264 |
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l.lwz r9,0x18(r1)
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| 265 |
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l.lwz r10,0x1c(r1)
|
| 266 |
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l.lwz r11,0x20(r1)
|
| 267 |
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l.lwz r12,0x24(r1)
|
| 268 |
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l.lwz r13,0x28(r1)
|
| 269 |
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l.lwz r14,0x2c(r1)
|
| 270 |
|
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l.lwz r15,0x30(r1)
|
| 271 |
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l.lwz r16,0x34(r1)
|
| 272 |
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l.lwz r17,0x38(r1)
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| 273 |
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l.lwz r18,0x3c(r1)
|
| 274 |
|
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l.lwz r19,0x40(r1)
|
| 275 |
|
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l.lwz r20,0x44(r1)
|
| 276 |
|
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l.lwz r21,0x48(r1)
|
| 277 |
|
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l.lwz r22,0x4c(r1)
|
| 278 |
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l.lwz r23,0x50(r1)
|
| 279 |
|
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l.lwz r24,0x54(r1)
|
| 280 |
|
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l.lwz r25,0x58(r1)
|
| 281 |
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l.lwz r26,0x5c(r1)
|
| 282 |
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l.lwz r27,0x60(r1)
|
| 283 |
|
|
l.lwz r28,0x64(r1)
|
| 284 |
|
|
l.lwz r29,0x68(r1)
|
| 285 |
|
|
l.lwz r30,0x6c(r1)
|
| 286 |
|
|
l.lwz r31,0x70(r1)
|
| 287 |
|
|
l.addi r1,r1,244 //free stack places
|
| 288 |
|
|
l.rfe //recover SR register and prior PC (jumps back to program)
|
| 289 |
|
|
l.nop
|
| 290 |
2 |
rfajardo |
|
