Avoid enforcing alignment on stack for IAR

Author: danielinux

include/image.h

@@ -74,6 +74,7 @@ int wolfBot_get_dts_size(void *dts_addr);
 #  endif
 #endif
 
+
 /* Helpers for memory alignment */
 #ifndef XALIGNED
     #if defined(__GNUC__) || defined(__llvm__) || \
@@ -88,6 +89,13 @@ int wolfBot_get_dts_size(void *dts_addr);
     #else
         #define XALIGNED(x) /* null expansion */
     #endif
+
+    /* Don't enforce stack alignment on IAR */
+    #if defined (__IAR_SYSTEMS_ICC__)
+        #define XALIGNED_STACK(x)
+    #else
+        #define XALIGNED_STACK(x) XALIGNED(x)
+    #endif
 #endif
 
 

src/libwolfboot.c

@@ -177,7 +177,7 @@ static const uint32_t wolfboot_magic_trail = WOLFBOOT_MAGIC_TRAIL;
 
 #include <stddef.h>
 #include <string.h>
-static uint8_t NVM_CACHE[NVM_CACHE_SIZE] __attribute__((aligned(16)));
+static uint8_t NVM_CACHE[NVM_CACHE_SIZE] XALIGNED(16)
 static int nvm_cached_sector = 0;
 static uint8_t get_base_offset(uint8_t *base, uintptr_t off)
 {
@@ -1344,7 +1344,7 @@ int wolfBoot_fallback_is_possible(void)
         #define ENCRYPT_CACHE NVM_CACHE
     #else
         #ifdef WOLFBOOT_SMALL_STACK
-        static uint8_t ENCRYPT_CACHE[NVM_CACHE_SIZE] __attribute__((aligned(32)));
+        static uint8_t ENCRYPT_CACHE[NVM_CACHE_SIZE] XALIGNED(32);
         #endif
     #endif
 #else
@@ -1363,7 +1363,7 @@ static int RAMFUNCTION hal_set_key(const uint8_t *k, const uint8_t *nonce)
     uint32_t trailer_relative_off = 4;
 
 #if !defined(WOLFBOOT_SMALL_STACK) && !defined(NVM_FLASH_WRITEONCE) && !defined(WOLFBOOT_ENCRYPT_CACHE)
-    uint8_t ENCRYPT_CACHE[NVM_CACHE_SIZE] __attribute__((aligned(32)));
+    uint8_t ENCRYPT_CACHE[NVM_CACHE_SIZE] XALIGNED_STACK(32);
 #endif
 
 #ifdef MMU
@@ -1703,7 +1703,7 @@ int RAMFUNCTION ext_flash_encrypt_write(uintptr_t address, const uint8_t *data,
     uint8_t part;
     uint32_t iv_counter = 0;
 #if defined(EXT_ENCRYPTED) && !defined(WOLFBOOT_SMALL_STACK) && !defined(NVM_FLASH_WRITEONCE)
-    uint8_t ENCRYPT_CACHE[NVM_CACHE_SIZE] __attribute__((aligned(32)));
+    uint8_t ENCRYPT_CACHE[NVM_CACHE_SIZE] XALIGNED_STACK(32);
 #endif
 
     row_offset = address & (ENCRYPT_BLOCK_SIZE - 1);

src/update_disk.c

@@ -79,7 +79,7 @@ extern uint8_t _end_wb[];
  */
 void RAMFUNCTION wolfBoot_start(void)
 {
-    uint8_t p_hdr[IMAGE_HEADER_SIZE] __attribute__((aligned(16)));
+    uint8_t p_hdr[IMAGE_HEADER_SIZE] XALIGN_STACK(16);
     struct stage2_parameter *stage2_params;
     struct wolfBoot_image os_image;
     int pA_ver = 0, pB_ver = 0;

tools/keytools/user_settings.h

@@ -29,7 +29,9 @@
 #include <stdint.h>
 
 /* System */
-#define WOLFBOOT_KEYTOOLS
+#ifndef WOLFBOOT_KEYTOOLS
+    #define WOLFBOOT_KEYTOOLS
+#endif
 #define SINGLE_THREADED
 #define WOLFCRYPT_ONLY