| commit | 7b8845a2a2ec4d9658225cf9c53eeafb4a60314c | [log] [tgz] |
|---|---|---|
| author | Nicholas Piggin <npiggin@gmail.com> | Wed Sep 14 13:21:47 2016 +1000 |
| committer | Michael Ellerman <mpe@ellerman.id.au> | Tue Sep 20 14:36:14 2016 +1000 |
| tree | fc4d0f1beeba382fb213e60bf6d4b10771d8cd2c | |
| parent | e0e0d6b7390b61feb06350ef4a9594bcf84ad204 [diff] |
powerpc/64: Document the syscall ABI Add some documentation for the 64-bit syscall ABI, which doesn't seem to be documented elsewhere. This attempts to document existing practice. The only small discrepancy is glibc clobbers not quite matching the kernel (e.g., xer, some vsyscalls trash cr1 whereas glibc only clobbers cr0). These will be resolved after this document is merged. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>