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This will ensure that the entire CoreCLR VM in protected via PAC. This will always be enabled for Linux builds. The expected cost is 1-2% slowdown in the VM and jit on PAC enabled machines. This code is static and is the most vulnerable to ROP attacks as an attacker will be able to...
# Extension and platform wants to use this feature in the Secure world CTX_INCLUDE_NEVE_REGS := 0 # Debug build DEBUG := 0 @@ -85,17 +75,10 @@ DEFAULT_PLAT := fvp # Disable the generation of the binary image (ELF only). DISABLE_BIN_GENERATION := 0 # Disable MTPMU if FEAT...
pac-ret Enables branch protection using pointer authentication using key A. This level protects functions that save the Link Register (LR) on the stack. This level does not generate branch protection code for leaf functions that do not save the LR on the stack. ...
this feature is available, otherwise it reverts to 48-bit). NOTE: Enabling 52-bit virtual addressing in conjunction with ARMv8.3 Pointer Authentication will result in the PAC being reduced from 7 bits to 3 bits, which may have a significant impact on its susceptibility to ...
It retains the merged-core architecture used by the Cortex-A510 which places two cores in a complex with a single pool of shared or private L2 cache (up to 512KB) and SIMD engine (SVE2/Neon). It incorporates the QARMA3 PAC algorithm to reduce overhead to less than 1%, allowing it ...
BP_OPTION := pac-ret+leaf ENABLE_PAUTH := 1 else ifeq (${BRANCH_PROTECTION},4) # Turn on branch target identification mechanism BP_OPTION := bti ENABLE_BTI := 1 else $(error Unknown BRANCH_PROTECTION value ${BRANCH_PROTECTION}) ...
1 x RS-232/422/485 DB9, default RS-232 2 x USB 2.0 type A, 1 x USB 2.0 (Micro B Type) ARMPAC-621P/R 21.5" TFT-LCD P: Projected Capacitive/ R: Resistive 250 NXP Freescale i.MX6 Dual Lite ARM Cortex A9(2x Cores,1.0GHz) ...
The PAC is the truncated output of QARMA. The size of the PAC is determined by processor virtual address size configuration and whether the "tagged address" feature is in use. The "tagged address" feature, which is different from PAC, allows software to add an 8-bit tag to a pointer ...
PAC/BTI is a useful Arm security feature, see this recent presentation at the Cambridge Mini Debconf for all details: [0] In order to properly support PAC/BTI in Debian we need to enable support in both GCC and glibc. An executable is marked as BTI compatible only if ...