forked from pool/MozillaThunderbird
82c07d74ff
* Calendar: Can't create repeating event with end date when using
certain time zones, for example Europe/Minsk
* some minor bugfixes
* using 60.6.0esr Mozilla platform (bsc#1129821)
- Mozilla Thunderbird 60.5.3
* fixed a regression on the Windows platform:
Problem when using "Send to > Mail recipient" on Windows
OBS-URL: https://build.opensuse.org/package/show/mozilla:Factory/MozillaThunderbird?expand=0&rev=458
96 lines
3.3 KiB
Diff
96 lines
3.3 KiB
Diff
|
|
# HG changeset patch
|
|
# User Lars T Hansen <lhansen@mozilla.com>
|
|
# Date 1519822672 -3600
|
|
# Node ID 800abe66894d6b07b24bccecbf6a65e2261076f6
|
|
# Parent 6fbe9ec020d822b1deef5b0afe76b905b82308a1
|
|
Bug 1375074 - Save and restore non-volatile x28 on ARM64 for generated unboxed object constructor. r=sstangl
|
|
|
|
diff --git a/js/src/jit-test/tests/bug1375074.js b/js/src/jit-test/tests/bug1375074.js
|
|
new file mode 100644
|
|
--- /dev/null
|
|
+++ b/js/src/jit-test/tests/bug1375074.js
|
|
@@ -0,0 +1,18 @@
|
|
+// This forces the VM to start creating unboxed objects and thus stresses a
|
|
+// particular path into generated code for a specialized unboxed object
|
|
+// constructor.
|
|
+
|
|
+var K = 2000; // 2000 should be plenty
|
|
+var s = "[";
|
|
+var i;
|
|
+for ( i=0; i < K-1; i++ )
|
|
+ s = s + `{"i":${i}},`;
|
|
+s += `{"i":${i}}]`;
|
|
+var v = JSON.parse(s);
|
|
+
|
|
+assertEq(v.length == K, true);
|
|
+
|
|
+for ( i=0; i < K; i++) {
|
|
+ assertEq(v[i] instanceof Object, true);
|
|
+ assertEq(v[i].i, i);
|
|
+}
|
|
diff --git a/js/src/vm/UnboxedObject.cpp b/js/src/vm/UnboxedObject.cpp
|
|
--- a/js/src/vm/UnboxedObject.cpp
|
|
+++ b/js/src/vm/UnboxedObject.cpp
|
|
@@ -81,18 +81,25 @@ static const uintptr_t CLEAR_CONSTRUCTOR
|
|
masm.loadPtr(Address(masm.getStackPointer(), sizeof(void*)), propertiesReg);
|
|
masm.loadPtr(Address(masm.getStackPointer(), 2 * sizeof(void*)), newKindReg);
|
|
#else
|
|
propertiesReg = IntArgReg0;
|
|
newKindReg = IntArgReg1;
|
|
#endif
|
|
|
|
#ifdef JS_CODEGEN_ARM64
|
|
- // ARM64 communicates stack address via sp, but uses a pseudo-sp for
|
|
- // addressing.
|
|
+ // ARM64 communicates stack address via sp, but uses a pseudo-sp (PSP) for
|
|
+ // addressing. The register we use for PSP may however also be used by
|
|
+ // calling code, and it is nonvolatile, so save it. Do this as a special
|
|
+ // case first because the generic save/restore code needs the PSP to be
|
|
+ // initialized already.
|
|
+ MOZ_ASSERT(PseudoStackPointer64.Is(masm.GetStackPointer64()));
|
|
+ masm.Str(PseudoStackPointer64, vixl::MemOperand(sp, -16, vixl::PreIndex));
|
|
+
|
|
+ // Initialize the PSP from the SP.
|
|
masm.initStackPtr();
|
|
#endif
|
|
|
|
MOZ_ASSERT(propertiesReg.volatile_());
|
|
MOZ_ASSERT(newKindReg.volatile_());
|
|
|
|
AllocatableGeneralRegisterSet regs(GeneralRegisterSet::All());
|
|
regs.take(propertiesReg);
|
|
@@ -234,17 +241,32 @@ static const uintptr_t CLEAR_CONSTRUCTOR
|
|
masm.bind(&done);
|
|
|
|
if (object != ReturnReg) masm.movePtr(object, ReturnReg);
|
|
|
|
// Restore non-volatile registers which were saved on entry.
|
|
if (ScratchDoubleReg.volatile_()) masm.pop(ScratchDoubleReg);
|
|
masm.PopRegsInMask(savedNonVolatileRegisters);
|
|
|
|
+#ifdef JS_CODEGEN_ARM64
|
|
+ // Now restore the value that was in the PSP register on entry, and return.
|
|
+
|
|
+ // Obtain the correct SP from the PSP.
|
|
+ masm.Mov(sp, PseudoStackPointer64);
|
|
+
|
|
+ // Restore the saved value of the PSP register, this value is whatever the
|
|
+ // caller had saved in it, not any actual SP value, and it must not be
|
|
+ // overwritten subsequently.
|
|
+ masm.Ldr(PseudoStackPointer64, vixl::MemOperand(sp, 16, vixl::PostIndex));
|
|
+
|
|
+ // Perform a plain Ret(), as abiret() will move SP <- PSP and that is wrong.
|
|
+ masm.Ret(vixl::lr);
|
|
+#else
|
|
masm.abiret();
|
|
+#endif
|
|
|
|
masm.bind(&failureStoreOther);
|
|
|
|
// There was a failure while storing a value which cannot be stored at all
|
|
// in the unboxed object. Initialize the object so it is safe for GC and
|
|
// return null.
|
|
masm.initUnboxedObjectContents(object, templateObject);
|
|
|