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2ff566b26d
fixes #8193 CVE-2017-13783, CVE-2017-13784, CVE-2017-13785, CVE-2017-13788, CVE-2017-13791, CVE-2017-13792, CVE-2017-13793, CVE-2017-13794, CVE-2017-13795, CVE-2017-13796, CVE-2017-13798, CVE-2017-13802, CVE-2017-13803
24 lines
1.1 KiB
Diff
24 lines
1.1 KiB
Diff
Fix code emitted for armv6l to not use movw/movt but ldr.
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See https://bugs.webkit.org/show_bug.cgi?id=131612
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and https://bugs.webkit.org/show_bug.cgi?id=141288
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--- a/Source/JavaScriptCore/offlineasm/arm.rb 2015-07-22 14:37:57.000000000 +0200
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+++ b/Source/JavaScriptCore/offlineasm/arm.rb 2015-08-08 00:31:21.011824644 +0200
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@@ -473,8 +473,16 @@
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$asm.puts "mov #{armFlippedOperands(operands)}"
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end
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when "mvlbl"
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+ if isARMv7 or isARMv7Traditional
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$asm.puts "movw #{operands[1].armOperand}, \#:lower16:#{operands[0].value}"
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$asm.puts "movt #{operands[1].armOperand}, \#:upper16:#{operands[0].value}"
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+ else
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+ $mvlbl_counter ||= 0
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+ $mvlbl_counter += 1
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+ const_label = "_mvlbl_const_label#{$mvlbl_counter}"
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+ $asm.puts ".equ #{const_label}, (#{operands[0].value})"
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+ $asm.puts "ldr #{operands[1].armOperand}, =#{const_label}"
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+ end
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when "nop"
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$asm.puts "nop"
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when "bieq", "bpeq", "bbeq"
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