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Use -1 as uninitialised marker

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Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
This commit is contained in:
Dave Rodgman 2023-08-04 12:52:51 +01:00
parent 4566132163
commit b30adce7fd
2 changed files with 4 additions and 4 deletions
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4
library/aesce.c
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@ -99,7 +99,7 @@
#include <asm/hwcap.h> #include <asm/hwcap.h>
#include <sys/auxv.h> #include <sys/auxv.h>
char mbedtls_aesce_has_support_result = 2; signed char mbedtls_aesce_has_support_result = -1;
#if !defined(MBEDTLS_AES_USE_HARDWARE_ONLY) #if !defined(MBEDTLS_AES_USE_HARDWARE_ONLY)
/* /*
@ -113,7 +113,7 @@ int mbedtls_aesce_has_support_impl(void)
* It is possible that we could end up setting result more than * It is possible that we could end up setting result more than
* once, but that is harmless. * once, but that is harmless.
*/ */
if (mbedtls_aesce_has_support_result == 2) { if (mbedtls_aesce_has_support_result == -1) {
unsigned long auxval = getauxval(AT_HWCAP); unsigned long auxval = getauxval(AT_HWCAP);
if ((auxval & (HWCAP_ASIMD | HWCAP_AES)) == if ((auxval & (HWCAP_ASIMD | HWCAP_AES)) ==
(HWCAP_ASIMD | HWCAP_AES)) { (HWCAP_ASIMD | HWCAP_AES)) {

4
library/aesce.h
View File

@ -44,7 +44,7 @@ extern "C" {
#if defined(__linux__) && !defined(MBEDTLS_AES_USE_HARDWARE_ONLY) #if defined(__linux__) && !defined(MBEDTLS_AES_USE_HARDWARE_ONLY)
extern char mbedtls_aesce_has_support_result; extern signed char mbedtls_aesce_has_support_result;
/** /**
* \brief Internal function to detect the crypto extension in CPUs. * \brief Internal function to detect the crypto extension in CPUs.
@ -53,7 +53,7 @@ extern char mbedtls_aesce_has_support_result;
*/ */
int mbedtls_aesce_has_support_impl(void); int mbedtls_aesce_has_support_impl(void);
#define mbedtls_aesce_has_support() (mbedtls_aesce_has_support_result == 2 ? \ #define mbedtls_aesce_has_support() (mbedtls_aesce_has_support_result == -1 ? \
mbedtls_aesce_has_support_impl() : \ mbedtls_aesce_has_support_impl() : \
mbedtls_aesce_has_support_result) mbedtls_aesce_has_support_result)