forked from pool/MozillaThunderbird
126ce832a3
- MozillaThunderbird 60.5.0:
* FileLink provider WeTransfer to upload large attachments
* Thunderbird now allows the addition of OpenSearch search engines
from a local XML file using a minimal user inferface: [+] button
to select a file an add, [-] to remove.
* More search engines: Google and DuckDuckGo available by default
in some locales
* During account creation, Thunderbird will now detect servers
using the Microsoft Exchange protocol. It will offer the
installation of a 3rd party add-on (Owl) which supports that
protocol.
* Thunderbird now compatible with other WebExtension-based
FileLink add-ons like the Dropbox add-on
- requires NSS 3.36.7
- removed obsolete patch
mozilla-no-stdcxx-check.patch
- rebased patches
MFSA 2018-31
* CVE-2018-17466 bmo#1488295
Buffer overflow and out-of-bounds read in ANGLE library with
TextureStorage11
* CVE-2018-18492 bmo#1499861
Use-after-free with select element
* CVE-2018-18493 bmo#1504452
Buffer overflow in accelerated 2D canvas with Skia
* CVE-2018-18494 bmo#1487964
Same-origin policy violation using location attribute and
performance.getEntries to steal cross-origin URLs
* CVE-2018-18498 bmo#1500011
Integer overflow when calculating buffer sizes for images
OBS-URL: https://build.opensuse.org/package/show/mozilla:Factory/MozillaThunderbird?expand=0&rev=451
96 lines
3.3 KiB
Diff
96 lines
3.3 KiB
Diff
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# HG changeset patch
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# User Lars T Hansen <lhansen@mozilla.com>
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# Date 1519822672 -3600
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# Node ID 800abe66894d6b07b24bccecbf6a65e2261076f6
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# Parent 13ecd3214b18e4cab73c54e12e16071d58bed11e
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Bug 1375074 - Save and restore non-volatile x28 on ARM64 for generated unboxed object constructor. r=sstangl
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diff --git a/js/src/jit-test/tests/bug1375074.js b/js/src/jit-test/tests/bug1375074.js
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new file mode 100644
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--- /dev/null
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+++ b/js/src/jit-test/tests/bug1375074.js
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@@ -0,0 +1,18 @@
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+// This forces the VM to start creating unboxed objects and thus stresses a
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+// particular path into generated code for a specialized unboxed object
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+// constructor.
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+
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+var K = 2000; // 2000 should be plenty
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+var s = "[";
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+var i;
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+for ( i=0; i < K-1; i++ )
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+ s = s + `{"i":${i}},`;
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+s += `{"i":${i}}]`;
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+var v = JSON.parse(s);
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+
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+assertEq(v.length == K, true);
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+
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+for ( i=0; i < K; i++) {
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+ assertEq(v[i] instanceof Object, true);
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+ assertEq(v[i].i, i);
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+}
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diff --git a/js/src/vm/UnboxedObject.cpp b/js/src/vm/UnboxedObject.cpp
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--- a/js/src/vm/UnboxedObject.cpp
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+++ b/js/src/vm/UnboxedObject.cpp
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@@ -81,18 +81,25 @@ static const uintptr_t CLEAR_CONSTRUCTOR
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masm.loadPtr(Address(masm.getStackPointer(), sizeof(void*)), propertiesReg);
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masm.loadPtr(Address(masm.getStackPointer(), 2 * sizeof(void*)), newKindReg);
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#else
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propertiesReg = IntArgReg0;
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newKindReg = IntArgReg1;
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#endif
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#ifdef JS_CODEGEN_ARM64
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- // ARM64 communicates stack address via sp, but uses a pseudo-sp for
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- // addressing.
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+ // ARM64 communicates stack address via sp, but uses a pseudo-sp (PSP) for
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+ // addressing. The register we use for PSP may however also be used by
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+ // calling code, and it is nonvolatile, so save it. Do this as a special
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+ // case first because the generic save/restore code needs the PSP to be
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+ // initialized already.
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+ MOZ_ASSERT(PseudoStackPointer64.Is(masm.GetStackPointer64()));
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+ masm.Str(PseudoStackPointer64, vixl::MemOperand(sp, -16, vixl::PreIndex));
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+
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+ // Initialize the PSP from the SP.
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masm.initStackPtr();
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#endif
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MOZ_ASSERT(propertiesReg.volatile_());
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MOZ_ASSERT(newKindReg.volatile_());
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AllocatableGeneralRegisterSet regs(GeneralRegisterSet::All());
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regs.take(propertiesReg);
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@@ -234,17 +241,32 @@ static const uintptr_t CLEAR_CONSTRUCTOR
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masm.bind(&done);
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if (object != ReturnReg) masm.movePtr(object, ReturnReg);
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// Restore non-volatile registers which were saved on entry.
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if (ScratchDoubleReg.volatile_()) masm.pop(ScratchDoubleReg);
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masm.PopRegsInMask(savedNonVolatileRegisters);
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+#ifdef JS_CODEGEN_ARM64
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+ // Now restore the value that was in the PSP register on entry, and return.
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+
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+ // Obtain the correct SP from the PSP.
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+ masm.Mov(sp, PseudoStackPointer64);
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+
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+ // Restore the saved value of the PSP register, this value is whatever the
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+ // caller had saved in it, not any actual SP value, and it must not be
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+ // overwritten subsequently.
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+ masm.Ldr(PseudoStackPointer64, vixl::MemOperand(sp, 16, vixl::PostIndex));
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+
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+ // Perform a plain Ret(), as abiret() will move SP <- PSP and that is wrong.
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+ masm.Ret(vixl::lr);
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+#else
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masm.abiret();
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+#endif
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masm.bind(&failureStoreOther);
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// There was a failure while storing a value which cannot be stored at all
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// in the unboxed object. Initialize the object so it is safe for GC and
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// return null.
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masm.initUnboxedObjectContents(object, templateObject);
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