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Bug 1444668 - Avoid allocating large AssemblerBuffers. r=luke, r=bbouvier, a=RyanVM

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Jan de Mooij 2018-04-10 15:00:49 +02:00 • committed by Roy Tam
commit 52269fa01a
5 changed files with 49 additions and 9 deletions
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8
js/src/jit/ProcessExecutableMemory.h
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@ -17,6 +17,14 @@ namespace jit {
// alignment though.
static const size_t ExecutableCodePageSize = 64 * 1024;
// Limit on the number of bytes of executable memory to prevent JIT spraying
// attacks.
#if JS_BITS_PER_WORD == 32
static const size_t MaxCodeBytesPerProcess = 128 * 1024 * 1024;
#else
static const size_t MaxCodeBytesPerProcess = 1 * 1024 * 1024 * 1024;
#endif
enum class ProtectionSetting {
Protected, // Not readable, writable, or executable.
Writable,