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| -rw-r--r-- | README | 4 |
1 files changed, 3 insertions, 1 deletions
@@ -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 |