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The init routine doesn't have to make sure that the IP bit of MSR is

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set since the boot loader already takes care of that.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@5096 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2003-10-21 03:38:39 +00:00
parent 6f634c19b6
commit 622405014e
1 changed files with 9 additions and 11 deletions
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20
src/kernel/core/arch/ppc/arch_int.c
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@ -158,24 +158,22 @@ int
arch_int_init2(kernel_args *ka)
{
region_id exception_region;
void *ex_handlers;
void *handlers;
// create a region to map the irq vector code into (physical addres 0x0)
ex_handlers = (void *)ka->arch_args.exception_handlers.start;
// create a region to map the irq vector code into (physical address 0x0)
handlers = (void *)ka->arch_args.exception_handlers.start;
exception_region = vm_create_anonymous_region(vm_get_kernel_aspace_id(), "exception_handlers",
&ex_handlers, REGION_ADDR_EXACT_ADDRESS,
ka->arch_args.exception_handlers.size, REGION_WIRING_WIRED_ALREADY, LOCK_RW|LOCK_KERNEL);
&handlers, REGION_ADDR_EXACT_ADDRESS,
ka->arch_args.exception_handlers.size,
REGION_WIRING_WIRED_ALREADY, LOCK_RW|LOCK_KERNEL);
if (exception_region < 0)
panic("arch_int_init2: could not create exception handler region\n");
dprintf("exception handlers at %p\n", ex_handlers);
dprintf("exception handlers at %p\n", handlers);
// copy the handlers into this area
memcpy(ex_handlers, &__irqvec_start, ka->arch_args.exception_handlers.size);
arch_cpu_sync_icache(0, 0x3000);
// make sure the IP bit isn't set (putting the exceptions at 0x0)
set_msr(get_msr() & ~MSR_IP);
memcpy(handlers, &__irqvec_start, ka->arch_args.exception_handlers.size);
arch_cpu_sync_icache(0, 0x1000);
return 0;
}