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Added set_user_intr_gate() and made "int 3" accessible to userland (the breakpoint exception).

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@11997 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2005-03-25 18:40:27 +00:00
parent 3eae1fea40
commit 99dbd8b489
1 changed files with 10 additions and 3 deletions
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13
src/kernel/core/arch/x86/arch_int.c
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@ -70,7 +70,7 @@ interrupt_ack(int n)
static void
set_gate(desc_table *gate_addr, unsigned int addr, int type, int dpl)
set_gate(desc_table *gate_addr, addr_t addr, int type, int dpl)
{
unsigned int gate1; // first byte of gate desc
unsigned int gate2; // second byte of gate desc
@ -86,7 +86,14 @@ set_gate(desc_table *gate_addr, unsigned int addr, int type, int dpl)
static void
set_intr_gate(int n, void *addr)
{
set_gate(&idt[n], (unsigned int)addr, 14, DPL_KERNEL);
set_gate(&idt[n], (addr_t)addr, 14, DPL_KERNEL);
}
static void
set_user_intr_gate(int n, void *addr)
{
set_gate(&idt[n], (addr_t)addr, 14, DPL_USER);
}
@ -341,7 +348,7 @@ arch_int_init(kernel_args *args)
set_intr_gate(0, &trap0);
set_intr_gate(1, &trap1);
set_intr_gate(2, &trap2);
set_intr_gate(3, &trap3);
set_user_intr_gate(3, &trap3);
set_intr_gate(4, &trap4);
set_intr_gate(5, &trap5);
set_intr_gate(6, &trap6);