PPC/s390: [cpu-profiler] Fix stack iterability during deopt (arm port)

Port 559a0034

Original Commit Message:

    We didn't think this affected arm but it turns out it does.

    This is a port of
    https://chromium-review.googlesource.com/c/v8/v8/+/1688049

R=petermarshall@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=
LOG=N

Change-Id: Id081736420a20216cef5c5f483acd987785c4d97
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1829899Reviewed-by: Junliang Yan <jyan@ca.ibm.com>
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Commit-Queue: Milad Farazmand <miladfar@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#64044}

src/deoptimizer/ppc/deoptimizer-ppc.cc

@@ -113,6 +113,17 @@ void Deoptimizer::GenerateDeoptimizationEntries(MacroAssembler* masm,
     __ stfd(d0, MemOperand(r4, dst_offset));
   }
 
+  // Mark the stack as not iterable for the CPU profiler which won't be able to
+  // walk the stack without the return address.
+  {
+    UseScratchRegisterScope temps(masm);
+    Register is_iterable = temps.Acquire();
+    Register zero = r7;
+    __ Move(is_iterable, ExternalReference::stack_is_iterable_address(isolate));
+    __ li(zero, Operand(0));
+    __ stb(zero, MemOperand(is_iterable));
+  }
+
   // Remove the saved registers from the stack.
   __ addi(sp, sp, Operand(kSavedRegistersAreaSize));
 
@@ -208,6 +219,15 @@ void Deoptimizer::GenerateDeoptimizationEntries(MacroAssembler* masm,
     }
   }
 
+  {
+    UseScratchRegisterScope temps(masm);
+    Register is_iterable = temps.Acquire();
+    Register one = r7;
+    __ Move(is_iterable, ExternalReference::stack_is_iterable_address(isolate));
+    __ li(one, Operand(1));
+    __ stb(one, MemOperand(is_iterable));
+  }
+
   {
     UseScratchRegisterScope temps(masm);
     Register scratch = temps.Acquire();
@@ -216,6 +236,7 @@ void Deoptimizer::GenerateDeoptimizationEntries(MacroAssembler* masm,
     __ mtlr(r0);
     __ Jump(scratch);
   }
+
   __ stop();
 }
 

src/deoptimizer/s390/deoptimizer-s390.cc

@@ -116,6 +116,17 @@ void Deoptimizer::GenerateDeoptimizationEntries(MacroAssembler* masm,
     __ StoreDouble(d0, MemOperand(r3, dst_offset));
   }
 
+  // Mark the stack as not iterable for the CPU profiler which won't be able to
+  // walk the stack without the return address.
+  {
+    UseScratchRegisterScope temps(masm);
+    Register is_iterable = temps.Acquire();
+    Register zero = r6;
+    __ Move(is_iterable, ExternalReference::stack_is_iterable_address(isolate));
+    __ lhi(zero, Operand(0));
+    __ StoreByte(zero, MemOperand(is_iterable));
+  }
+
   // Remove the saved registers from the stack.
   __ la(sp, MemOperand(sp, kSavedRegistersAreaSize));
 
@@ -206,9 +217,19 @@ void Deoptimizer::GenerateDeoptimizationEntries(MacroAssembler* masm,
     }
   }
 
+  {
+    UseScratchRegisterScope temps(masm);
+    Register is_iterable = temps.Acquire();
+    Register one = r6;
+    __ Move(is_iterable, ExternalReference::stack_is_iterable_address(isolate));
+    __ lhi(one, Operand(1));
+    __ StoreByte(one, MemOperand(is_iterable));
+  }
+
   __ pop(ip);  // get continuation, leave pc on stack
   __ pop(r14);
   __ Jump(ip);
+
   __ stop();
 }