type
Post
status
Published
date
Nov 18, 2024
slug
summary
OP-TEE RPC 的 codes trace 筆記。
tags
OP-TEE
category
Security
icon
password
The code is based on: https://gitlab.com/riseproject/riscv-optee/optee_os/-/tree/dev-optee-mpxy
Commit ID:
75df9ba41a404aec897399ead0ff0aebcbff48cathread_rpc_cmd()- Call
thread_rpc()withrpc_args(rv[THREAD_RPC_NUM_ARGS]).rpc_args’s first element is set toOPTEE_ABI_RETURN_RPC_CMDfunction.
thread_rpc()- Call
__thread_rpc()
__thread_rpc()- Call
xstatus_for_xret()to getxstatuswithxstatus.PIEset to0,xstatus.PPset toS-mode. - The returned
xstatusis passed to thread_rpc_xstatus(). - Call thread_rpc_xstatus().