MBEDTLS_NO_INT64_DIVISION -> MBEDTLS_NO_UDBL_DIVISION
Changed the option to disable the use of 64-bit division, to an option to disable the use of double-width division, whether that's 64 or 128-bit.
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@ -16,6 +16,13 @@ API Changes
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qualifier from the functions mbedtls_aes_decrypt, mbedtls_aes_encrypt,
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mbedtls_ssl_ciphersuite_uses_ec and mbedtls_ssl_ciphersuite_uses_psk.
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Changes
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* Added config.h option MBEDTLS_NO_UDBL_DIVISION, to prevent the use of
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64-bit division.
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* Added config.h option MBEDTLS_TYPE_UDBL to allow configuring the
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double-width integer type used in the bignum module when the compiler is
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unknown.
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Bugfix
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* Add a check if iv_len is zero, and return an error if it is zero. reported
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by roberto. #716
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@ -55,6 +55,31 @@
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*/
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#define MBEDTLS_HAVE_ASM
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/**
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* \def MBEDTLS_NO_UDBL_DIVISION
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*
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* The platform lacks support for double-width integer division (64-bit
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* division on a 32-bit platform, 128-bit division on a 64-bit platform).
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*
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* Used in:
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* include/mbedtls/bignum.h
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* library/bignum.c
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*
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* The bignum code uses double-width division to speed up some operations.
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* Double-width division is often implemented in software that needs to
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* be linked with the program. The presence of a double-width integer
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* type is usually detected automatically through preprocessor macros,
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* but the automatic detection cannot know whether the code needs to
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* and can be linked with an implementation of division for that type.
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* By default division is assumed to be usable if the type is present.
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* Uncomment this option to prevent the use of double-width division.
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*
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* Note that division for the native integer type is always required.
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* Furthermore, a 64-bit type is always required even on a 32-bit
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* platform, but it need not support multiplication or division.
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*/
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//#define MBEDTLS_NO_UDBL_DIVISION
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/**
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* \def MBEDTLS_HAVE_SSE2
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*
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@ -468,6 +468,13 @@ scripts/config.pl unset MBEDTLS_MEMORY_BACKTRACE # execinfo.h
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scripts/config.pl unset MBEDTLS_MEMORY_BUFFER_ALLOC_C # calls exit
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CC=arm-none-eabi-gcc AR=arm-none-eabi-ar LD=arm-none-eabi-ld CFLAGS='-Werror -Wall -Wextra' make lib
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msg "build: arm-none-eabi-gcc -DMBEDTLS_NO_UDBL_DIVISION, make" # ~ 10s
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cleanup
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scripts/config.pl set MBEDTLS_NO_UDBL_DIVISION
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CC=arm-none-eabi-gcc AR=arm-none-eabi-ar LD=arm-none-eabi-ld CFLAGS='-Werror -Wall -Wextra' make lib
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echo "Checking that software 64-bit division is not required"
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! grep __aeabi_uldiv library/*.o
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msg "build: ARM Compiler 5, make"
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cleanup
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cp "$CONFIG_H" "$CONFIG_BAK"
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