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Make unaligned accessors always inline

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Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
This commit is contained in:
Dave Rodgman 2024-01-19 14:06:52 +00:00
parent c581264977
commit 55b5dd2cfc
2 changed files with 42 additions and 18 deletions
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48
library/alignment.h
View File

@ -85,6 +85,12 @@ typedef uint32_t __attribute__((__aligned__(1))) mbedtls_uint32_unaligned_t;
typedef uint64_t __attribute__((__aligned__(1))) mbedtls_uint64_unaligned_t;
#endif
/*
* We try to force mbedtls_(get|put)_unaligned_uintXX to be always inline, because this results
* in code that is both smaller and faster. IAR and gcc both benefit from this when optimising
* for size.
*/
/**
* Read the unsigned 16 bits integer from the given address, which need not
* be aligned.
@ -92,7 +98,12 @@ typedef uint64_t __attribute__((__aligned__(1))) mbedtls_uint64_unaligned_t;
* \param p pointer to 2 bytes of data
* \return Data at the given address
*/
inline uint16_t mbedtls_get_unaligned_uint16(const void *p)
#if defined(__IAR_SYSTEMS_ICC__)
#pragma inline = forced
#elif defined(__GNUC__)
__attribute__((always_inline))
#endif
static inline uint16_t mbedtls_get_unaligned_uint16(const void *p)
{
uint16_t r;
#if defined(UINT_UNALIGNED)
@ -111,7 +122,12 @@ inline uint16_t mbedtls_get_unaligned_uint16(const void *p)
* \param p pointer to 2 bytes of data
* \param x data to write
*/
inline void mbedtls_put_unaligned_uint16(void *p, uint16_t x)
#if defined(__IAR_SYSTEMS_ICC__)
#pragma inline = forced
#elif defined(__GNUC__)
__attribute__((always_inline))
#endif
static inline void mbedtls_put_unaligned_uint16(void *p, uint16_t x)
{
#if defined(UINT_UNALIGNED)
mbedtls_uint16_unaligned_t *p16 = (mbedtls_uint16_unaligned_t *) p;
@ -128,7 +144,12 @@ inline void mbedtls_put_unaligned_uint16(void *p, uint16_t x)
* \param p pointer to 4 bytes of data
* \return Data at the given address
*/
inline uint32_t mbedtls_get_unaligned_uint32(const void *p)
#if defined(__IAR_SYSTEMS_ICC__)
#pragma inline = forced
#elif defined(__GNUC__)
__attribute__((always_inline))
#endif
static inline uint32_t mbedtls_get_unaligned_uint32(const void *p)
{
uint32_t r;
#if defined(UINT_UNALIGNED)
@ -147,7 +168,12 @@ inline uint32_t mbedtls_get_unaligned_uint32(const void *p)
* \param p pointer to 4 bytes of data
* \param x data to write
*/
inline void mbedtls_put_unaligned_uint32(void *p, uint32_t x)
#if defined(__IAR_SYSTEMS_ICC__)
#pragma inline = forced
#elif defined(__GNUC__)
__attribute__((always_inline))
#endif
static inline void mbedtls_put_unaligned_uint32(void *p, uint32_t x)
{
#if defined(UINT_UNALIGNED)
mbedtls_uint32_unaligned_t *p32 = (mbedtls_uint32_unaligned_t *) p;
@ -164,7 +190,12 @@ inline void mbedtls_put_unaligned_uint32(void *p, uint32_t x)
* \param p pointer to 8 bytes of data
* \return Data at the given address
*/
inline uint64_t mbedtls_get_unaligned_uint64(const void *p)
#if defined(__IAR_SYSTEMS_ICC__)
#pragma inline = forced
#elif defined(__GNUC__)
__attribute__((always_inline))
#endif
static inline uint64_t mbedtls_get_unaligned_uint64(const void *p)
{
uint64_t r;
#if defined(UINT_UNALIGNED)
@ -183,7 +214,12 @@ inline uint64_t mbedtls_get_unaligned_uint64(const void *p)
* \param p pointer to 8 bytes of data
* \param x data to write
*/
inline void mbedtls_put_unaligned_uint64(void *p, uint64_t x)
#if defined(__IAR_SYSTEMS_ICC__)
#pragma inline = forced
#elif defined(__GNUC__)
__attribute__((always_inline))
#endif
static inline void mbedtls_put_unaligned_uint64(void *p, uint64_t x)
{
#if defined(UINT_UNALIGNED)
mbedtls_uint64_unaligned_t *p64 = (mbedtls_uint64_unaligned_t *) p;

12
library/platform_util.c
View File

@ -226,18 +226,6 @@ extern inline void mbedtls_xor(unsigned char *r,
const unsigned char *b,
size_t n);
extern inline uint16_t mbedtls_get_unaligned_uint16(const void *p);
extern inline void mbedtls_put_unaligned_uint16(void *p, uint16_t x);
extern inline uint32_t mbedtls_get_unaligned_uint32(const void *p);
extern inline void mbedtls_put_unaligned_uint32(void *p, uint32_t x);
extern inline uint64_t mbedtls_get_unaligned_uint64(const void *p);
extern inline void mbedtls_put_unaligned_uint64(void *p, uint64_t x);
#if defined(MBEDTLS_HAVE_TIME) && !defined(MBEDTLS_PLATFORM_MS_TIME_ALT)
#include <time.h>