devs/foxbox
1
0
Fork 0
forked from len0rd/rockbox
Code Pull requests Activity

hwstub: Remove code duplication in ATJ213x exception handling

Browse source
This commit is contained in:
Marcin Bukat 2023-09-27 22:29:10 +02:00
parent bf81914217
commit 609db995d5
1 changed files with 9 additions and 48 deletions
Download patch file Download diff file Expand all files Collapse all files

57
utils/hwstub/stub/atj213x/crt0.S
View file

@ -140,66 +140,27 @@ stack_munge_loop:
.section .exception.tlb_refill,"ax",%progbits
tlb_refill_handler:
la k1, exception_jmp_ctx_ptr
lw s0, 0(k1)
lw s1, 4(k1)
lw s2, 8(k1)
lw s3, 12(k1)
lw s4, 16(k1)
lw s5, 20(k1)
lw s6, 24(k1)
lw s7, 28(k1)
lw sp, 32(k1)
lw s8, 36(k1)
lw k1, 40(k1)
mtc0 k1, C0_EPC
ehb
li v0, EXCEPTION_ADDR
eret
li a0, EXCEPTION_ADDR
la k0, restore_exception_jmp
jr k0
nop
.global cache_error_handler
.section .exception.cache_error,"ax",%progbits
cache_error_handler:
la k1, exception_jmp_ctx_ptr
lw s0, 0(k1)
lw s1, 4(k1)
lw s2, 8(k1)
lw s3, 12(k1)
lw s4, 16(k1)
lw s5, 20(k1)
lw s6, 24(k1)
lw s7, 28(k1)
lw sp, 32(k1)
lw s8, 36(k1)
lw k1, 40(k1)
mtc0 k1, C0_EPC
ehb
li v0, EXCEPTION_ADDR
eret
li a0, EXCEPTION_ADDR
la k0, restore_exception_jmp
jr k0
nop
.global general_exception_handler
.section .exception.general_exception,"ax",%progbits
general_exception_handler:
la k1, exception_jmp_ctx_ptr
lw s0, 0(k1)
lw s1, 4(k1)
lw s2, 8(k1)
lw s3, 12(k1)
lw s4, 16(k1)
lw s5, 20(k1)
lw s6, 24(k1)
lw s7, 28(k1)
lw sp, 32(k1)
lw s8, 36(k1)
lw k1, 40(k1)
mtc0 k1, C0_EPC
ehb
li v0, EXCEPTION_UNSP
eret
li a0, EXCEPTION_UNSP
la k0, restore_exception_jmp
jr k0
nop
/* s0-s7 not saved as this are callee saved registers