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Use UINTPTR_MAX not SIZE_MAX

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Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
This commit is contained in:
Dave Rodgman 2023-06-21 11:55:17 +01:00
parent 85842b8edb
commit 63e89b46f8
1 changed files with 6 additions and 4 deletions
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10
library/constant_time.c
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@ -63,8 +63,9 @@
* only used here.
*/
#if defined(MBEDTLS_EFFICIENT_UNALIGNED_ACCESS) && defined(MBEDTLS_HAVE_ASM)
#if ((defined(__arm__) || defined(__thumb__) || defined(__thumb2__)) && (SIZE_MAX == 0xffffffff)) || \
(defined(__aarch64__) && ((SIZE_MAX == 0xffffffff) || (SIZE_MAX == 0xffffffffffffffff)))
#if ((defined(__arm__) || defined(__thumb__) || defined(__thumb2__)) && (UINTPTR_MAX == 0xfffffffful)) || \
(defined(__aarch64__) && ((UINTPTR_MAX == 0xffffffffull) || (UINTPTR_MAX == 0xffffffffffffffffull)))
/* We check pointer sizes to avoid issues with them not matching register size requirements */
#define MBEDTLS_EFFICIENT_UNALIGNED_VOLATILE_ACCESS
#endif
#endif
@ -80,10 +81,11 @@ static inline uint32_t mbedtls_get_unaligned_volatile_uint32(volatile const unsi
#if defined(__arm__) || defined(__thumb__) || defined(__thumb2__)
asm volatile ("ldr %0, [%1]" : "=r" (r) : "r" (p) :);
#elif defined(__aarch64__)
#if (SIZE_MAX == 0xffffffff)
#if (UINTPTR_MAX == 0xfffffffful)
/* ILP32: Specify the pointer operand slightly differently, as per #7787. */
asm volatile ("ldr %w0, [%1]" : "=r" (r) : "p" (p) :);
#else
#elif (UINTPTR_MAX == 0xffffffffffffffffull)
/* aarch64 with 64-bit pointers */
asm volatile ("ldr %w0, [%1]" : "=r" (r) : "r" (p) :);
#endif
#endif