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From fe687ccb463fa42de923c5440259d89f781f3c69 Mon Sep 17 00:00:00 2001
From: Daniel Golle <daniel@makrotopia.org>
Date: Mon, 9 Dec 2024 01:01:44 +0000
Subject: [PATCH] currentStackPointer for Linux/PPC, Linux/PPC64
Add inline assembly implementation to return the current stack
pointer on Linux running on PowerPC and PowerPC64 archtecture.
---
Source/WTF/wtf/StackPointer.cpp | 11 +++++++++++
1 file changed, 11 insertions(+)
--- a/Source/WTF/wtf/StackPointer.cpp
+++ b/Source/WTF/wtf/StackPointer.cpp
@@ -160,6 +160,17 @@ asm (
".previous" "\n"
);
+#elif CPU(PPC) || CPU(PPC64)
+asm (
+ ".text" "\n"
+ ".globl " SYMBOL_STRING(currentStackPointer) "\n"
+ SYMBOL_STRING(currentStackPointer) ":" "\n"
+
+ "mr 3, 1" "\n" // Move stack pointer (r1) to return register (r3)
+ "blr" "\n" // Branch to link register (return)
+ ".previous" "\n"
+);
+
#else
#error "Unsupported platform: need implementation of currentStackPointer."
#endif
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