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Added proposed fixes

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Signed-off-by: Matthias Schulz <mschulz@hilscher.com>
This commit is contained in:
Matthias Schulz 2023-11-13 10:04:19 +01:00
parent 2e068cef09
commit ca8981c1ee
1 changed files with 4 additions and 2 deletions
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6
library/constant_time_impl.h
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@ -120,10 +120,12 @@ static inline mbedtls_ct_uint_t mbedtls_ct_compiler_opaque(mbedtls_ct_uint_t x)
* On Thumb 2 and Arm, both compilers are happy with the "s" suffix,
* although we don't actually care about setting the flags.
*
* For gcc, restore divided syntax afterwards - otherwise old versions of gcc
* For old versions of gcc excluding 4.8 and 4.9 (see #8516 for details),
* restore divided syntax afterwards - otherwise old versions of gcc
* seem to apply unified syntax globally, which breaks other asm code.
*/
#if !defined(__clang__) && !(__GNUC__ == 4 && __GNUC_MINOR__ == 9)
#if defined(MBEDTLS_COMPILER_IS_GCC) && defined(__thumb__) && !defined(__thumb2__) && \
(__GNUC__ < 11) && !((__GNUC__ == 4) && ((__GNUC_MINOR__ == 8) || (__GNUC_MINOR__ == 9)))
#define RESTORE_ASM_SYNTAX ".syntax divided \n\t"
#else
#define RESTORE_ASM_SYNTAX