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keep a one-interrupt history of MI interrupt types

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This commit is contained in:
Connor Olding 2018-08-24 08:17:50 +02:00
parent 9b89a0e41d
commit 5d79e8f4c3
2 changed files with 20 additions and 1 deletions
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1
inc/kernel.inc
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@ -11,6 +11,7 @@ constant K_IN_ISR(0x060C)
constant K_EPC(0x0610)
constant K_ERRORPC(0x0614)
constant K_BADVADDR(0x0618)
constant K_HISTORY(0x061C)
constant K_64DRIVE_MAGIC(0x0700)
constant K_CI_BASE(0x0704)

20
kernel.asm
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@ -283,7 +283,7 @@ InterruptHandler:
mfc0 k1, CP0_BadVAddr
sw k1, K_BADVADDR(k0)
sw r0, K_REASON+0x1C(k0)
sw r0, K_HISTORY(k0)
// prevent recursive interrupts if ISR_Main somehow causes an interrupt
// lw t1, K_IN_ISR(k0)
@ -442,6 +442,9 @@ K_MI_SP:
// then check andi t1, SG1 | SG2 ?
lw t0, K_HISTORY(k0)
ori t0, 0x01
sw t0, K_HISTORY(k0)
j K_MI_Loop
andi s0, ~MI_INTR_SP
@ -451,6 +454,9 @@ K_MI_SI:
lui a1, SI_BASE
sw r0, SI_STATUS(a1)
lw t0, K_HISTORY(k0)
ori t0, 0x02
sw t0, K_HISTORY(k0)
j K_MI_Loop
andi s0, ~MI_INTR_SI
@ -461,6 +467,9 @@ K_MI_AI:
lui a1, AI_BASE
sw t0, AI_STATUS(a1)
lw t0, K_HISTORY(k0)
ori t0, 0x04
sw t0, K_HISTORY(k0)
j K_MI_Loop
andi s0, ~MI_INTR_AI
@ -470,6 +479,9 @@ K_MI_VI:
lui a1, VI_BASE
sw r0, VI_V_CURRENT_LINE(a1)
lw t0, K_HISTORY(k0)
ori t0, 0x08
sw t0, K_HISTORY(k0)
j K_MI_Loop
andi s0, ~MI_INTR_VI
@ -480,6 +492,9 @@ K_MI_PI:
lui a1, PI_BASE
sw t0, PI_STATUS(a1)
lw t0, K_HISTORY(k0)
ori t0, 0x10
sw t0, K_HISTORY(k0)
j K_MI_Loop
andi s0, ~MI_INTR_PI
@ -490,6 +505,9 @@ K_MI_DP:
lui a1, MI_BASE
sw t0, MI_INIT_MODE(a1)
lw t0, K_HISTORY(k0)
ori t0, 0x20
sw t0, K_HISTORY(k0)
j K_MI_Loop
andi s0, ~MI_INTR_DP