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reserve/initialize the syscall irq/vector

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git-svn-id: https://svn.aros.org/svn/aros/trunk/AROS@53665 fb15a70f-31f2-0310-bbcc-cdcc74a49acc
This commit is contained in:
NicJA
2017-02-16 01:59:42 +00:00
parent e6df0c625a
commit 9e012fd32e
1 changed files with 19 additions and 6 deletions
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25
arch/i386-pc/kernel/platform_init.c
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@ -31,8 +31,16 @@ static int PlatformInit(struct KernelBase *KernelBase)
for (i = 0; i < HW_IRQ_COUNT; i++)
{
KernelBase->kb_Interrupts[i].ki_Priv &= ~IRQINTF_ENABLED;
KernelBase->kb_Interrupts[i].ki_List.lh_Type = KBL_INTERNAL;
if (i == APIC_IRQ_SYSCALL)
{
KernelBase->kb_Interrupts[i].ki_Priv |= IRQINTF_ENABLED; // Reserve the Syscall Handler..
KernelBase->kb_Interrupts[i].ki_List.lh_Type = KBL_INTERNAL - 1;
}
else
{
KernelBase->kb_Interrupts[i].ki_Priv &= ~IRQINTF_ENABLED;
KernelBase->kb_Interrupts[i].ki_List.lh_Type = KBL_INTERNAL;
}
}
data = AllocMem(sizeof(struct PlatformData), MEMF_PUBLIC|MEMF_CLEAR);
@ -42,10 +50,6 @@ static int PlatformInit(struct KernelBase *KernelBase)
D(bug("[Kernel:i386] %s: Allocated platform data at 0x%p\n", __func__, data));
KernelBase->kb_PlatformData = data;
// Setup the base syscall handler(s) ...
NEWLIST(&data->kb_SysCallHandlers);
krnAddSysCallHandler(data, &x86_SCSupervisorHandler, FALSE, TRUE);
/*
* Now we have a complete memory list and working AllocMem().
* We can allocate space for IDT and TSS now and build them to make
@ -72,6 +76,15 @@ static int PlatformInit(struct KernelBase *KernelBase)
/* Restore IDT structure */
core_SetupIDT(0, idt);
// Setup the base syscall handler(s) ...
NEWLIST(&data->kb_SysCallHandlers);
if (!core_SetIDTGate(idt, APIC_IRQ_SYSCALL, (uintptr_t)IntrDefaultGates[APIC_IRQ_SYSCALL], TRUE))
{
krnPanic(NULL, "Failed to set BSP Syscall Vector\n"
"Vector #%02X\n", APIC_IRQ_SYSCALL);
}
krnAddSysCallHandler(data, &x86_SCSupervisorHandler, FALSE, TRUE);
/* Set correct TSS address in the GDT */
GDT[6].base_low = ((unsigned long)tss) & 0xffff;
GDT[6].base_mid = (((unsigned long)tss) >> 16) & 0xff;