r14 is no longer used as non volatile GOT ptr. Instead the volatile r12 is used so be sure to do GET_GOT in asm code when you need to access global data.
Signed-off-by: Joakim Tjernlund Joakim.Tjernlund@transmode.se --- README | 4 +++- 1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/README b/README index 7affe10..263bb05 100644 --- a/README +++ b/README @@ -3922,7 +3922,9 @@ For PowerPC, the following registers have specific use: R30: GOT pointer R31: frame pointer
- (U-Boot also uses R14 as internal GOT pointer.) + (U-Boot also uses R12 as internal GOT pointer. r12 + is a volatile register so r12 needs to be reset when + going back and forth between asm and C)
==> U-Boot will use R2 to hold a pointer to the global data