path: root/cpu-supplement/powerpc.rst
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authorSebastian Huber <>2016-11-10 10:16:03 +0100
committerSebastian Huber <>2016-11-10 10:16:30 +0100
commit6297ad31d09bb5c0bddda418881296b7cbd20152 (patch)
tree92be5b7024d84e0ba26afb77e49e2162509067c9 /cpu-supplement/powerpc.rst
parent9330bfbaa7e7855c4b1caa75de78c97197d45733 (diff)
cpu-supplement: Document PowerPC SPRG0-2 usage
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
--- a/cpu-supplement/powerpc.rst
+++ b/cpu-supplement/powerpc.rst
@@ -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