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From: Iain D Sandoe <iains@gcc.gnu.org>
To: gcc-cvs@gcc.gnu.org
Subject: [gcc(refs/users/iains/heads/d-for-darwin)] D,
 Linux : Add implementation for PPC64 init stack.
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https://gcc.gnu.org/g:3ebe099ee043169cfaeb9d16909be35d0808d0cf

commit 3ebe099ee043169cfaeb9d16909be35d0808d0cf
Author: Iain Sandoe <iain@sandoe.co.uk>
Date:   Fri Dec 11 00:53:40 2020 +0000

    D, Linux : Add implementation for PPC64 init stack.
    
    This provides an initStack entry for 'Posix' PPC64 case.

Diff:
---
 libphobos/libdruntime/core/thread.d | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/libphobos/libdruntime/core/thread.d b/libphobos/libdruntime/core/thread.d
index d6506cda036..98b781eb945 100644
--- a/libphobos/libdruntime/core/thread.d
+++ b/libphobos/libdruntime/core/thread.d
@@ -5024,6 +5024,33 @@ private:
 
             assert( (cast(size_t) pstack & 0x0f) == 0 );
         }
+        else version (AsmPPC64_Posix)
+        {
+            version (StackGrowsDown)
+            {
+                pstack -= long.sizeof * 5;
+            }
+            else
+            {
+                pstack += long.sizeof * 5;
+            }
+
+            push( cast(size_t) &fiber_entryPoint );     // link register
+            push( 0x00000000_00000000 );                // control register
+            push( 0x00000000_00000000 );                // old stack pointer
+
+            // GPR values
+            version (StackGrowsDown)
+            {
+                pstack -= long.sizeof * 20;
+            }
+            else
+            {
+                pstack += long.sizeof * 20;
+            }
+
+            assert( (cast(size_t) pstack & 0x0f) == 0 );
+        }
         else version (AsmMIPS_O32_Posix)
         {
             version (StackGrowsDown) {}