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kokke 2020-03-07 02:54:49 +01:00 committed by GitHub
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@ -47,14 +47,14 @@ GCC size output when only CTR mode is compiled for ARM:
$ arm-none-eabi-gcc -Os -DCBC=0 -DECB=0 -DCTR=1 -c aes.c $ arm-none-eabi-gcc -Os -DCBC=0 -DECB=0 -DCTR=1 -c aes.c
$ size aes.o $ size aes.o
text data bss dec hex filename text data bss dec hex filename
1343 0 0 1343 53f aes.o 1171 0 0 1171 493 aes.o
.. and when compiling for the THUMB instruction set, we end up just below 1K in code size. .. and when compiling for the THUMB instruction set, we end up well below 1K in code size.
$ arm-none-eabi-gcc -Os -mthumb -DCBC=0 -DECB=0 -DCTR=1 -c aes.c $ arm-none-eabi-gcc -Os -mthumb -DCBC=0 -DECB=0 -DCTR=1 -c aes.c
$ size aes.o $ size aes.o
text data bss dec hex filename text data bss dec hex filename
979 0 0 979 3d3 aes.o 903 0 0 903 387 aes.o
I am using the Free Software Foundation, ARM GCC compiler: I am using the Free Software Foundation, ARM GCC compiler: