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Line 152:
Line 152: − Like the 3DS, the switch has a number of kernel capability descriptors. Unlike 3ds, where descriptors were identified by pattern 11..10 in high bits, on switch descriptors are identified by pattern 01..11 in low bits.+ − + − + − + − + − + − + − + − + − | ?+ − − | <code>0bxxxx01111111?</code> − | Handle table size? − | ? − + − + − + − + − + − | ?+ − − | <code>0b011111111111?</code> − | Map memory page? − | ?
→Kernel Access Control
= Kernel Access Control =
= Kernel Access Control =
On Switch, descriptors are identified by pattern 01..11 in low bits.
{| class="wikitable" border="1"
{| class="wikitable" border="1"
|-
|-
! Pattern of bits 20-31
! Pattern of bits 15-0
! Type
! Type
! Fields
! Fields
|-
|-
| <code>0bxxxxxxxx0111?</code>
| <code>0bxxxxxxxxxxxx0111</code>
| Interrupt info?
| Kernel flags
| ?
| ?
|-
|-
| <code>0bxxxxxxx01111</code>
| <code>0bxxxxxxxxxxx01111</code>
| System call mask
| Syscall mask
| Bits 29-31: System call mask table index; Bits 5-28: mask
| Bits 29-31: Syscall mask table index; Bits 5-28: mask
|-
|-
| <code>0bxxxxx0111111?</code>
| <code>0bxxxxxxxxx0111111</code>
| Kernel release version?
| Map IO page
| Bits 7-31: page
|-
|-
|-
| <code>0bxxx011111111?</code>
| <code>0bxxxxxxxx01111111</code>
| Kernel flags?
| Map IO range
| ?
| Bits 7-31: page then size alternating
|-
|-
| <code>0bx0111111111?</code>
| <code>0bxxxxx11111111111</code>
| Map address range?
| Interrupt pair
| Bits 12-21: irq0, bits 20-31: irq1, 0x3FF means empty.
|-
|}
|}