Diffstat (limited to 'cpu-supplement/powerpc.rst')
1 files changed, 11 insertions, 0 deletions
diff --git a/cpu-supplement/powerpc.rst b/cpu-supplement/powerpc.rst
index b84c2b4..cd7847b 100644
@@ -270,6 +270,17 @@ Special Registers
The PowerPC architecture includes a number of special registers which are
critical to the programming model:
+*Special-Purpose Register General 0 (SPRG0)*
+ On SMP configurations, this register contains the address of the per-CPU
+ control of the processor.
+*Special-Purpose Register General 1 (SPRG1)*
+ This register contains the interrupt stack pointer for the outer-most
+ interrupt service routine.
+*Special-Purpose Register General 2 (SPRG2)*
+ This register contains the address of interrupt stack area begin.
*Machine State Register*
The MSR contains the processor mode, power management mode, endian mode,
exception information, privilege level, floating point available and