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| H A D | mem_usage.py | 479c49dd9247118109448e5be0883f08e80c5f46 Fri Nov 29 12:01:34 UTC 2019 Jerome Forissier <jerome@forissier.org> mem_usage.py: stop parsing file when _end_of_ram is reached
Since commit 5966660c02b3 ("core: move relocation to embedded data
region"), when ASLR is enabled, some sections are stored at the end of
tee.elf for use by gen_tee_bin.py which then discards them. As a
result, they are not present in the final binary and should not be
reported by the memory usage script.
By ignoring any section past the _end_of_ram symbol, we avoid reporting
those discarded sections as well as a hole before them.
Before:
$ make -s CFG_CORE_ASLR=y
$ scripts/mem_usage.py out/arm-plat-vexpress/core/tee.elf
RAM Usage 0E100000 - 0E301E04 size 00201E04 2056 KiB 514 pages
.text 0E100000 - 0E12FA68 size 0002FA68 190 KiB
*hole* 0E12FA68 - 0E130000 size 00000598 1 KiB
.rodata 0E130000 - 0E140598 size 00010598 65 KiB
.gnu.hash 0E140598 - 0E1405B0 size 00000018 0 KiB
.got 0E1405B0 - 0E1406F8 size 00000148 0 KiB
.ARM.exidx 0E1406F8 - 0E142B78 size 00002480 9 KiB
.ARM.extab 0E142B78 - 0E143274 size 000006FC 1 KiB
*hole* 0E143274 - 0E144000 size 00000D8C 3 KiB
.data 0E144000 - 0E145410 size 00001410 5 KiB
.bss 0E145410 - 0E1509A8 size 0000B598 45 KiB
.heap1 0E1509A8 - 0E164000 size 00013658 77 KiB
.nozi 0E164000 - 0E176B80 size 00012B80 74 KiB
*hole* 0E176B80 - 0E300000 size 00189480 1573 KiB
.dynamic 0E300000 - 0E300098 size 00000098 0 KiB
.hash 0E300098 - 0E3000B0 size 00000018 0 KiB
.dynsym 0E3000B0 - 0E3000E0 size 00000030 0 KiB
.dynstr 0E3000E0 - 0E3000E1 size 00000001 0 KiB
*hole* 0E3000E1 - 0E3000E4 size 00000003 0 KiB
.rel 0E3000E4 - 0E301E04 size 00001D20 7 KiB
After:
$ make -s CFG_CORE_ASLR=y
$ scripts/mem_usage.py out/arm-plat-vexpress/core/tee.elf
RAM Usage 0E100000 - 0E176B80 size 00076B80 475 KiB 119 pages
.text 0E100000 - 0E12FA68 size 0002FA68 190 KiB
*hole* 0E12FA68 - 0E130000 size 00000598 1 KiB
.rodata 0E130000 - 0E140598 size 00010598 65 KiB
.gnu.hash 0E140598 - 0E1405B0 size 00000018 0 KiB
.got 0E1405B0 - 0E1406F8 size 00000148 0 KiB
.ARM.exidx 0E1406F8 - 0E142B78 size 00002480 9 KiB
.ARM.extab 0E142B78 - 0E143274 size 000006FC 1 KiB
*hole* 0E143274 - 0E144000 size 00000D8C 3 KiB
.data 0E144000 - 0E145410 size 00001410 5 KiB
.bss 0E145410 - 0E1509A8 size 0000B598 45 KiB
.heap1 0E1509A8 - 0E164000 size 00013658 77 KiB
.nozi 0E164000 - 0E176B80 size 00012B80 74 KiB
Signed-off-by: Jerome Forissier <jerome@forissier.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
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