| 1,4 → 1,4 |
|---|
| # |
| |
| # Copyright (C) 2001-2004 Jakub Jermar |
| # All rights reserved. |
| # |
| 26,10 → 26,13 |
|---|
| # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| # |
| |
| #include <arch/asm/macro.h> |
| |
| #define STACK_SPACE 128 |
| |
| #define __ASM__ |
| |
| #include <arch/asm/regname.h> |
| #include <arch/mm/page.h> |
| #include <arch/asm/boot.h> |
| #include <arch/context.h> |
| |
| .text |
| |
| .set noat |
| 41,8 → 44,79 |
|---|
| .global cache_error_entry |
| .global exception_entry |
| |
| .macro REGISTERS_STORE r |
| sw $at,EOFFSET_AT(\r) |
| sw $v0,EOFFSET_V0(\r) |
| sw $v1,EOFFSET_V1(\r) |
| sw $a0,EOFFSET_A0(\r) |
| sw $a1,EOFFSET_A1(\r) |
| sw $a2,EOFFSET_A2(\r) |
| sw $a3,EOFFSET_A3(\r) |
| sw $t0,EOFFSET_A4(\r) |
| sw $t1,EOFFSET_T1(\r) |
| sw $t2,EOFFSET_T2(\r) |
| sw $t3,EOFFSET_T3(\r) |
| sw $t4,EOFFSET_T4(\r) |
| sw $t5,EOFFSET_T5(\r) |
| sw $t6,EOFFSET_T6(\r) |
| sw $t7,EOFFSET_T7(\r) |
| sw $t8,EOFFSET_T8(\r) |
| sw $t9,EOFFSET_T9(\r) |
| sw $s0,EOFFSET_S0(\r) |
| sw $s1,EOFFSET_S1(\r) |
| sw $s2,EOFFSET_S2(\r) |
| sw $s3,EOFFSET_S3(\r) |
| sw $s4,EOFFSET_S4(\r) |
| sw $s5,EOFFSET_S5(\r) |
| sw $s6,EOFFSET_S6(\r) |
| sw $s7,EOFFSET_S7(\r) |
| sw $s8,EOFFSET_S8(\r) |
| sw $gp,EOFFSET_GP(\r) |
| sw $ra,EOFFSET_RA(\r) |
| mflo $k0 |
| mfhi $k1 |
| sw $k0,EOFFSET_LO(\r) |
| sw $k1,EOFFSET_HI(\r) |
| .endm |
| |
| .macro REGISTERS_LOAD r |
| lw $at,EOFFSET_AT(\r) |
| lw $v0,EOFFSET_V0(\r) |
| lw $v1,EOFFSET_V1(\r) |
| lw $a0,EOFFSET_A0(\r) |
| lw $a1,EOFFSET_A1(\r) |
| lw $a2,EOFFSET_A2(\r) |
| lw $a3,EOFFSET_A3(\r) |
| lw $t0,EOFFSET_A4(\r) |
| lw $t1,EOFFSET_T1(\r) |
| lw $t2,EOFFSET_T2(\r) |
| lw $t3,EOFFSET_T3(\r) |
| lw $t4,EOFFSET_T4(\r) |
| lw $t5,EOFFSET_T5(\r) |
| lw $t6,EOFFSET_T6(\r) |
| lw $t7,EOFFSET_T7(\r) |
| lw $t8,EOFFSET_T8(\r) |
| lw $t9,EOFFSET_T9(\r) |
| lw $s0,EOFFSET_S0(\r) |
| lw $s1,EOFFSET_S1(\r) |
| lw $s2,EOFFSET_S2(\r) |
| lw $s3,EOFFSET_S3(\r) |
| lw $s4,EOFFSET_S4(\r) |
| lw $s5,EOFFSET_S5(\r) |
| lw $s6,EOFFSET_S6(\r) |
| lw $s7,EOFFSET_S7(\r) |
| lw $s8,EOFFSET_S8(\r) |
| lw $gp,EOFFSET_GP(\r) |
| lw $ra,EOFFSET_RA(\r) |
| |
| lw $k0,EOFFSET_LO(\r) |
| lw $k1,EOFFSET_HI(\r) |
| mtlo $k0 |
| mthi $k1 |
| .endm |
| |
| |
| .org 0x0 |
| kernel_image_start: |
| tlb_refill_entry: |
| j tlb_refill_handler |
| nop |
| 55,37 → 129,55 |
|---|
| .org 0x180 |
| exception_entry: |
| exception_handler: |
| sub $29, STACK_SPACE |
| REGISTERS_STORE $29 |
| sub $sp, REGISTER_SPACE |
| REGISTERS_STORE $sp |
| |
| jal exception |
| nop |
| |
| REGISTERS_LOAD $29 |
| add $29, STACK_SPACE |
| REGISTERS_LOAD $sp |
| add $sp, REGISTER_SPACE |
| |
| eret |
| nop |
| |
| .org KA2PA(0x80000300) |
| kernel_image_start: |
| /* Load temporary stack */ |
| lui $sp, (TEMP_STACK_START + TEMP_STACK_SIZE) >> 16 |
| ori $sp, (TEMP_STACK_START + TEMP_STACK_SIZE) & 0xffff |
| |
| /* Not sure about this, but might be needed for PIC code???? */ |
| lui $gp, 0x8000 |
| |
| jal main_bsp |
| nop |
| |
| .org KA2PA(TEMP_STACK_START) |
| .space TEMP_STACK_SIZE |
| |
| tlb_refill_handler: |
| sub $29, STACK_SPACE |
| REGISTERS_STORE $29 |
| sub $sp, REGISTER_SPACE |
| REGISTERS_STORE $sp |
| |
| jal tlb_refill |
| nop |
| |
| REGISTERS_LOAD $29 |
| add $29, STACK_SPACE |
| REGISTERS_LOAD $sp |
| add $sp, REGISTER_SPACE |
| |
| eret |
| nop |
| |
| cache_error_handler: |
| sub $29, STACK_SPACE |
| REGISTERS_STORE $29 |
| sub $sp, REGISTER_SPACE |
| REGISTERS_STORE $sp |
| |
| jal cache_error |
| nop |
| |
| REGISTERS_LOAD $29 |
| add $29, STACK_SPACE |
| REGISTERS_LOAD $sp |
| add $sp, REGISTER_SPACE |
| |
| eret |
| nop |