arm-trusted-firmware

Douglas Raillard 5c2c88b558 Fix BL2U entrypoint possible parameter corruption Replace the use of r12 by r10 to save the value of a parameter of bl2u_entrypoint to pass it to bl2u_early_platform_setup at the end of the function. r10 is a callee saved register so it will not become corrupted by C code, whereas r12 is the The Intra-Procedure-call scratch register potentially used by veneers. See the ARM AAPCS document (ARM IHI 0042F). Change-Id: I4f37e54a6b550719edb40bb24cd8f498827e2749 Signed-off-by: Douglas Raillard <douglas.raillard@arm.com>	7 years ago
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bl2u_entrypoint.S	Fix BL2U entrypoint possible parameter corruption	7 years ago

Douglas Raillard 5c2c88b558 Fix BL2U entrypoint possible parameter corruption

Replace the use of r12 by r10 to save the value of a parameter of
bl2u_entrypoint to pass it to bl2u_early_platform_setup at the end of
the function. r10 is a callee saved register so it will not become
corrupted by C code, whereas r12 is the The Intra-Procedure-call scratch
register potentially used by veneers. See the ARM AAPCS document (ARM
IHI 0042F).

Change-Id: I4f37e54a6b550719edb40bb24cd8f498827e2749
Signed-off-by: Douglas Raillard <douglas.raillard@arm.com>

7 years ago

bl2u_entrypoint.S

Fix BL2U entrypoint possible parameter corruption

7 years ago