Fix incorrect pointer conversion in SMC_UUID_RET()
Casting a pointer to a struct uuid into a pointer to uint32_t may result in a pointer that is not correctly aligned, which constitutes an undefined behaviour. In the case of TF, this also generates a data abort because alignment fault checking is enabled (through the SCTLR.A bit). This patch modifies the SMC_UUID_RET() macro to read the uuid structure without any pointer aliasing. A helper function then combines every set of 4 bytes into a 32-bit value suitable to be returned through the x0-x3 registers. This fixes a violation of MISRA rule 11.3. Change-Id: I53ee73bb4cb332f4d8286055ceceb6f347caa080 Signed-off-by: Sandrine Bailleux <sandrine.bailleux@arm.com> |
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include/lib/aarch32/smccc_helpers.h |
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include/lib/aarch64/smccc_helpers.h |
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include/lib/smccc.h |
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