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| author | Michael Ellerman <mpe@ellerman.id.au> | 2020-09-14 22:57:18 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-09-14 22:57:18 +1000 |
| commit | 960e3708135ac8b03ef3d1fa773e369cfacc76b9 (patch) | |
| tree | 3b3b679d211377a291a55fb9598d1c7f408aeab9 /Documentation/powerpc | |
| parent | dc462267d2d7aacffc3c1d99b02d7a7c59db7c66 (diff) | |
| parent | 0460534b532e5518c657c7d6492b9337d975eaa3 (diff) | |
| download | linux-960e3708135ac8b03ef3d1fa773e369cfacc76b9.tar.bz2 | |
Merge branch 'fixes' into next
Bring in our fixes branch for this cycle which avoids some small
conflicts with upcoming commits.
Diffstat (limited to 'Documentation/powerpc')
| -rw-r--r-- | Documentation/powerpc/syscall64-abi.rst | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/Documentation/powerpc/syscall64-abi.rst b/Documentation/powerpc/syscall64-abi.rst index 46caaadbb029..379817ca64d2 100644 --- a/Documentation/powerpc/syscall64-abi.rst +++ b/Documentation/powerpc/syscall64-abi.rst @@ -49,16 +49,18 @@ Register preservation rules Register preservation rules match the ELF ABI calling sequence with the following differences: -=========== ============= ======================================== --- For the sc instruction, differences with the ELF ABI --- +=========== ============= ======================================== r0 Volatile (System call number.) r3 Volatile (Parameter 1, and return value.) r4-r8 Volatile (Parameters 2-6.) cr0 Volatile (cr0.SO is the return error condition.) cr1, cr5-7 Nonvolatile lr Nonvolatile +=========== ============= ======================================== --- For the scv 0 instruction, differences with the ELF ABI --- +=========== ============= ======================================== r0 Volatile (System call number.) r3 Volatile (Parameter 1, and return value.) r4-r8 Volatile (Parameters 2-6.) |