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(re)implemented irq1-irq4+irq7 handlers

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This commit is contained in:
Markus Fröschle
2015-01-09 15:57:42 +00:00
parent a96e42ba3d
commit 1dfb34d8cf
1 changed files with 76 additions and 41 deletions
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117
sys/exceptions.S
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@@ -133,7 +133,12 @@
/*
* macros
*/
.altmacro
/*
* used for "forwarding" interrupt handlers. This just clears the "pending interrupt"
* flag from the EDGE PORT flag register, set the status register to the appropriate interrupt
* mask an jump through the corresponging vector
*/
.macro irq vector,int_mask,clr_int
move.w #0x2700,sr // disable interrupt
subq.l #8,sp
@@ -185,6 +190,28 @@ init_vec_loop:
lea _get_bas_drivers(pc),a1
move.l a1,0x80(a0) // trap #0 exception vector
// MFP interrupt handlers. Those are rerouted to their autovector counterparts
lea irq1(pc),a1
move.l a1,0x104(a0)
lea irq2(pc),a1
move.l a1,0x108(a0)
lea irq3(pc),a1
move.l a1,0x10c(a0)
lea irq4(pc),a1
move.l a1,0x110(a0)
lea irq5(pc),a1
move.l a1,0x114(a0)
lea irq6(pc),a1
move.l a1,0x118(a0)
lea irq7(pc),a1
move.l a1,0x11c(a0)
#ifdef MACHINE_FIREBEE
// timer vectors (triggers when vbashi gets changed, used for video page copy)
@@ -219,6 +246,7 @@ init_vec_loop:
move.l (sp)+,a2 // Restore registers
rts
/*
* exception vector routines
*/
@@ -366,49 +394,14 @@ flpoow:
#endif /* _NOT_USED */
#if MACHINE_M5484LITE // handlers for M5484LITE
irq1: irq 0x64, 1, 0x02 // Level 1 autovector interrupt (unused)
irq2: irq 0x68, 2, 0x04 // Level 2 autovector interrupt (horizonatl blank)
irq3: irq 0x6c, 3, 0x08 // Level 3 autovector interrupt (unused)
irq4: irq 0x70, 4, 0x10 // Level 4 autovector interrupt (vertical blank)
irq5: // irq5 is tied to PCI INTC# and PCI INTD# on the M5484LITE
move.w #0x2700,sr // disable interrupts
lea -4*4(sp),sp // save gcc scratch registers
movem.l d0-d1/a0-a1,(sp)
jsr _irq5_handler // call C handler routine
movem.l (sp),d0-d1/a0-a1 // restore registers
lea 4*4(sp),sp
rte // return from exception
irq5text:
.ascii "IRQ5!"
.dc.b 13,10,0
irq6:
irq 0x74,5,0x20
irq7: // irq7 is tied to PCI INTA# and PCI INTB# on the M5484LITE
move.w #0x2700,sr // disable interrupts
lea -4*4(sp),sp // save gcc scratch registers
movem.l d0-d1/a0-a1,(sp)
jsr _irq7_handler // call C handler routine
movem.l (sp),d0-d1/a0-a1 // restore registers
lea 4*4(sp),sp
rte // return from exception
irq7text:
.data
.ascii "IRQ7!"
.dc.b 13,10,0
.text
#elif MACHINE_FIREBEE /* these handlers are only meaningful for the Firebee */
#if defined(MACHINE_FIREBEE) /* these handlers are only meaningful for the Firebee */
irq5: move.w #0x2700,sr // disable interrupts
subq.l #4,sp // extra space
@@ -522,6 +515,48 @@ handler_gpt0:
unlk a6
rte
#else // handlers for M5484LITE
irq5: // irq5 is tied to PCI INTC# and PCI INTD# on the M5484LITE
move.w #0x2700,sr // disable interrupts
lea -4*4(sp),sp // save gcc scratch registers
movem.l d0-d1/a0-a1,(sp)
jsr _irq5_handler // call C handler routine
movem.l (sp),d0-d1/a0-a1 // restore registers
lea 4*4(sp),sp
rte // return from exception
irq5text:
.ascii "IRQ5!"
.dc.b 13,10,0
irq6:
irq 0x74,5,0x20
irq7: // irq7 is tied to PCI INTA# and PCI INTB# on the M5484LITE
move.w #0x2700,sr // disable interrupts
lea -4*4(sp),sp // save gcc scratch registers
movem.l d0-d1/a0-a1,(sp)
jsr _irq7_handler // call C handler routine
movem.l (sp),d0-d1/a0-a1 // restore registers
lea 4*4(sp),sp
rte // return from exception
irq7text:
.data
.ascii "IRQ7!"
.dc.b 13,10,0
.text
#endif /* MACHINE_FIREBEE */
/*