Add proccontrol/src/loadLibrary/codegen-ppc.C

dyninst · Apr 3, 2024 · 11d9ac4 · 11d9ac4
1 parent 9664117
commit 11d9ac4
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Showing 2 changed files with 14 additions and 6 deletions.
diff --git a/docs/dyninstAPI/developer/codegen.h.rst b/docs/dyninstAPI/developer/codegen.h.rst
@@ -222,3 +222,17 @@ codegen.h
   .. cpp:enumerator:: cgNOP
   .. cpp:enumerator:: cgTrap
   .. cpp:enumerator:: cgIllegal
+
+
+Notes
+*****
+
+On PowerPC, user code can use up to 288 bytes under the stack pointer;
+we skip past this so that we don't mess things up. System code can further
+use 224 bytes more under the stack pointer. To be safe, we move down the
+stack pointer by 512 bytes.
+
+.. code:: c
+
+  #define STACKSKIP 512
+
diff --git a/proccontrol/src/loadLibrary/codegen-ppc.C b/proccontrol/src/loadLibrary/codegen-ppc.C
@@ -10,12 +10,6 @@ using namespace NS_power;
 using namespace ProcControlAPI;
 using namespace std;
 
-// User code can use up to 288 bytes under the stack pointer;
-// we skip past this so that we don't mess things up. 
-//
-// And system code can further use 224 bytes more under the stack pointer.
-//
-// To be safe, we move down the stack pointer by 512
 #define STACKSKIP 512
 
 bool Codegen::generateCallPPC32(Address addr, const std::vector<Address> &args) {