2. The pointer to the jump table is passed to the application in a
machine-dependent way. PowerPC, ARM, MIPS and Blackfin architectures
use a dedicated register to hold the pointer to the 'global_data'
- structure: r29 on PowerPC, r8 on ARM, k0 on MIPS, and P5 on Blackfin.
- The x86 architecture does not use such a register; instead, the pointer
- to the 'global_data' structure is passed as 'argv[-1]' pointer.
+ structure: r2 on PowerPC, r8 on ARM, k0 on MIPS, and P3 on Blackfin.
+ The x86 architecture does not use such a register; instead, the
+ pointer to the 'global_data' structure is passed as 'argv[-1]'
+ pointer.
The application can access the 'global_data' structure in the same
way as U-Boot does: