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shortened to what's really needed from assembler. The rest will be done in the C handler

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Markus Fröschle
2013-12-17 14:42:19 +00:00
parent dd5e02cec9
commit 2fd6cfc633
1 changed files with 8 additions and 26 deletions
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34
BaS_gcc/sources/exceptions.S
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@@ -46,6 +46,10 @@
.extern cpusha .extern cpusha
.extern _xhdi_sd_install /* trap #0 exception vector for installation of xhdi SD card driver */ .extern _xhdi_sd_install /* trap #0 exception vector for installation of xhdi SD card driver */
/* PCI interrupt handlers */
.extern _irq5_handler
.extern _irq7_handler
/* Register read/write macros */ /* Register read/write macros */
#define MCF_MMU_MMUCR __MMUBAR #define MCF_MMU_MMUCR __MMUBAR
#define MCF_MMU_MMUOR __MMUBAR+0x04 #define MCF_MMU_MMUOR __MMUBAR+0x04
@@ -640,26 +644,15 @@ irq4: // vbl
irq5: // irq5 is tied to PCI INTC# and PCI INTD# on the M5484LITE irq5: // irq5 is tied to PCI INTC# and PCI INTD# on the M5484LITE
move.w #0x2700,sr // disable interrupts move.w #0x2700,sr // disable interrupts
lea -8(sp),sp // make room
movem.l d0/a5,(sp) // save registers
lea MCF_EPORT_EPFR,a5
bset #5,(a5) // clear int5 from edge port
lea -4*4(sp),sp // save gcc scratch registers lea -4*4(sp),sp // save gcc scratch registers
movem.l d0-d1/a0-a1,(sp) movem.l d0-d1/a0-a1,(sp)
pea irq5text jsr _irq5_handler // call C handler routine
jsr _xprintf
addq.l #4,sp // fix stack
// jsr _irq5_handler // call C handler routine movem.l (sp),d0-d1/a0-a1 // restore registers
movem.l (sp),d0-d1/a0-a2 // restore registers
lea 4*4(sp),sp lea 4*4(sp),sp
movem.l (sp),d0/a5 // restore registers
lea 8(sp),sp // adjust stack
rte // return from exception rte // return from exception
irq5text: irq5text:
@@ -672,26 +665,15 @@ irq6:
irq7: // irq7 is tied to PCI INTA# and PCI INTB# on the M5484LITE irq7: // irq7 is tied to PCI INTA# and PCI INTB# on the M5484LITE
move.w #0x2700,sr // disable interrupts move.w #0x2700,sr // disable interrupts
lea -8(sp),sp // make room
movem.l d0/a5,(sp) // save registers
lea MCF_EPORT_EPFR,a5
bset #7,(a5) // clear int5 from edge port
lea -4*4(sp),sp // save gcc scratch registers lea -4*4(sp),sp // save gcc scratch registers
movem.l d0-d1/a0-a1,(sp) movem.l d0-d1/a0-a1,(sp)
pea irq7text jsr _irq7_handler // call C handler routine
jsr _xprintf
addq.l #4,sp // fix stack
// jsr _irq7_handler // call C handler routine movem.l (sp),d0-d1/a0-a1 // restore registers
movem.l (sp),d0-d1/a0-a2 // restore registers
lea 4*4(sp),sp lea 4*4(sp),sp
movem.l (sp),d0/a5 // restore registers
lea 8(sp),sp // adjust stack
rte // return from exception rte // return from exception
irq7text: irq7text: