[js, ARM] Always check error return from BufferOffset::diffB.
parent
2e3a0eefbd
commit
12db4f07ea
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@ -2401,7 +2401,12 @@ Assembler::as_b(Label* l, Condition c)
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if (oom())
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return BufferOffset();
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as_b(BufferOffset(l).diffB<BOffImm>(ret), c, ret);
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BOffImm off = BufferOffset(l).diffB<BOffImm>(ret);
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if (off.isInvalid()) {
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m_buffer.fail_bail();
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return BufferOffset();
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}
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as_b(off, c, ret);
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#ifdef JS_DISASM_ARM
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spewBranch(m_buffer.getInstOrNull(ret), l);
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#endif
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@ -5012,7 +5012,10 @@ void
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MacroAssembler::patchCall(uint32_t callerOffset, uint32_t calleeOffset)
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{
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BufferOffset inst(callerOffset - 4);
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as_bl(BufferOffset(calleeOffset).diffB<BOffImm>(inst), Always, inst);
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BOffImm off = BufferOffset(calleeOffset).diffB<BOffImm>(inst);
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MOZ_RELEASE_ASSERT(!off.isInvalid(),
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"Failed to insert necessary far jump islands");
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as_bl(off, Always, inst);
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}
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CodeOffset
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