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BUD17-416: Benchmark and profiling in OP-TEE
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Secure Monitor
User
UserKernel
Kernel
client
libtee.so
TEE
generic
OP-TEE
driver
OP-TEE
core
libutee
TA
TA
TA
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Secure WorldNormal World
EL0
EL1
libTEEC
OP-TEE KMOD
Benchmark
app
Client app
OP-TEE OS Core
Benchmark
Pseudo TA
1.BENCHMARK_C
MD_REGISTER_M
EMREF
Benchmark_aux
libUTEE
Client TA
Hijack
timestam
p memref
2.fork/
exec
3.InvokeCommand
4.BENCHMARK_CMD_
GET_MEMREF
5.resume
Invoke
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main()
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foo(2)
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bar()
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foo(1)
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x3
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main()
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foo(2)
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bar()
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foo(1)
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x3
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make CFG_TA_GPROF_SUPPORT=y CFLAGS_ta_arm32=-pg
/tmp/gmon-<uuid>.out
U=8aaaf200-2450-11e4-abe20002a5d5c51b
gprof $U.elf /tmp/gmon-$U.out
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TA_InvokeCommandEntryPoint()
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TA_InvokeCommandEntryPoint()
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example.o: file format elf32-littlearm
00000000 <foo>:
0: e92d 4ff0 stmdb sp!, {r4, r5, r6, ...
4: b08d sub sp, #52 ; 0x34
6: af00 add r7, sp, #0
8: b500 push {lr}
a: f7ff fffe bl 0 <__gnu_mcount_nc>
e: 60f8 str r0, [r7, #12]
10: f240 0300 movw r3, #0
14: f2c0 0300 movt r3, #0
...
example.o: file format elf64-littleaarch64
0000000000000000 <foo>:
0: a9bb7bfd stp x29, x30, [sp,#-80]!
4: 910003fd mov x29, sp
8: aa1e03e1 mov x1, x30
c: b9001fa0 str w0, [x29,#28]
10: aa0103e0 mov x0, x1
14: 94000000 bl 0 <_mcount>
18: 90000000 adrp x0, 0 <__stack_chk_guard>
1c: 91000000 add x0, x0, #0x0
...
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Linux kernel
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gprof.c
OP-TEE core
gprof_pta.c
RPC
thread_rpc_cmd()
Task switching
thread_state_suspend(
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Trusted App code
libutee
gprof.c
Profiling buffer (.bss)
PC
samples
Call arcs
Secure WorldNormal World
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EL1
gmon-*.out
1a
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2
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BUD17-416: Benchmark and profiling in OP-TEE

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