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| author | spicyjpeg <thatspicyjpeg@gmail.com> | 2022-08-13 21:26:36 +0200 |
|---|---|---|
| committer | spicyjpeg <thatspicyjpeg@gmail.com> | 2022-08-13 21:26:36 +0200 |
| commit | ec3ed1574dac08b1c07a8126f6090adce0e7efb8 (patch) | |
| tree | 825f4bb5e044ce2fa674780b66c77e51e48ab9a4 /libpsn00b/psxetc/isr.s | |
| parent | edb967394d22420c9aaad529862a670c016cc2c7 (diff) | |
| download | psn00bsdk-ec3ed1574dac08b1c07a8126f6090adce0e7efb8.tar.gz | |
Rewrite libpsxetc in C, add ResetCallback()
Diffstat (limited to 'libpsn00b/psxetc/isr.s')
| -rw-r--r-- | libpsn00b/psxetc/isr.s | 107 |
1 files changed, 0 insertions, 107 deletions
diff --git a/libpsn00b/psxetc/isr.s b/libpsn00b/psxetc/isr.s deleted file mode 100644 index 440be50..0000000 --- a/libpsn00b/psxetc/isr.s +++ /dev/null @@ -1,107 +0,0 @@ -.set noreorder - -.include "hwregs_a.h" - -.set ISR_STACK_SIZE, 4096 - - -.section .text - -# Global ISR handler of PSn00bSDK - -.set at - -.type _global_isr, @function -_global_isr: - -.Lisr_loop: - - #la $gp, _gp # Keep restoring GP since it gets - # changed elsewhere sometimes - - lui $a0, IOBASE # Get IRQ status - lw $v0, IRQ_MASK($a0) - nop - - srl $v0, $s1 # Check IRQ mask bit if set - andi $v0, 0x1 - - beqz $v0, .Lno_irq # Don't execute callback if IRQ not enabled - nop - - lw $v0, IRQ_STAT($a0) - nop - srl $v0, $s1 # Check IRQ status bit if set - andi $v0, 0x1 - beqz $v0, .Lno_irq # Don't execute callback if no IRQ - nop - - lw $v1, 0($s0) # Load IRQ callback function - nop - - lw $v0, IRQ_STAT($a0) # Acknowledge the IRQ (by writing a 0 bit) - li $a1, 1 - sll $a1, $s1 - addiu $a2, $0 , -1 - xor $a1, $a2 - sw $a1, IRQ_STAT($a0) - - beqz $v1, .Lno_irq # Don't execute if callback is not set - nop - - jalr $v1 # Call interrupt handler - nop - -.Lno_irq: - - addiu $s0, 4 - - blt $s1, 11, .Lisr_loop - addiu $s1, 1 - - j ReturnFromException - nop - - -.section .data - -# Global ISR callback table - -.global _irq_func_table -.type _irq_func_table, @object -_irq_func_table: - .word 0 - .word 0 - .word 0 - .word 0 - .word 0 - .word 0 - .word 0 - .word 0 - .word 0 - .word 0 - .word 0 - .word 0 - -# Global ISR hook structure -.global _custom_exit -.type _custom_exit, @object -_custom_exit: - .word _global_isr # pc - .word _isr_stack+ISR_STACK_SIZE # sp - .word 0 # fp - .word _irq_func_table # s0 - .word 0 # s1 - .word 0 # s2 - .word 0 # s3 - .word 0 # s4 - .word 0 # s5 - .word 0 # s6 - .word 0 # s7 - .word _gp # gp - -# Global ISR stack -# .fill 1024 -#_custom_exit_stack: -# .fill 4 -.comm _isr_stack, ISR_STACK_SIZE+4 |