Add support for Windriver's Diab v4 (stricter C89)

src/sha256.c

@@ -180,6 +180,35 @@ void mg_hmac_sha256(uint8_t dst[32], uint8_t *key, size_t keysz, uint8_t *data,
 #define sig164(x) (rotr64(x, 19) ^ rotr64(x, 61) ^ ((x) >> 6))
 
 static const uint64_t mg_sha256_k2[80] = {
+#if defined(__DCC__)
+    0x428a2f98d728ae22ull, 0x7137449123ef65cdull, 0xb5c0fbcfec4d3b2full,
+    0xe9b5dba58189dbbcull, 0x3956c25bf348b538ull, 0x59f111f1b605d019ull,
+    0x923f82a4af194f9bull, 0xab1c5ed5da6d8118ull, 0xd807aa98a3030242ull,
+    0x12835b0145706fbeull, 0x243185be4ee4b28cull, 0x550c7dc3d5ffb4e2ull,
+    0x72be5d74f27b896full, 0x80deb1fe3b1696b1ull, 0x9bdc06a725c71235ull,
+    0xc19bf174cf692694ull, 0xe49b69c19ef14ad2ull, 0xefbe4786384f25e3ull,
+    0x0fc19dc68b8cd5b5ull, 0x240ca1cc77ac9c65ull, 0x2de92c6f592b0275ull,
+    0x4a7484aa6ea6e483ull, 0x5cb0a9dcbd41fbd4ull, 0x76f988da831153b5ull,
+    0x983e5152ee66dfabull, 0xa831c66d2db43210ull, 0xb00327c898fb213full,
+    0xbf597fc7beef0ee4ull, 0xc6e00bf33da88fc2ull, 0xd5a79147930aa725ull,
+    0x06ca6351e003826full, 0x142929670a0e6e70ull, 0x27b70a8546d22ffcull,
+    0x2e1b21385c26c926ull, 0x4d2c6dfc5ac42aedull, 0x53380d139d95b3dfull,
+    0x650a73548baf63deull, 0x766a0abb3c77b2a8ull, 0x81c2c92e47edaee6ull,
+    0x92722c851482353bull, 0xa2bfe8a14cf10364ull, 0xa81a664bbc423001ull,
+    0xc24b8b70d0f89791ull, 0xc76c51a30654be30ull, 0xd192e819d6ef5218ull,
+    0xd69906245565a910ull, 0xf40e35855771202aull, 0x106aa07032bbd1b8ull,
+    0x19a4c116b8d2d0c8ull, 0x1e376c085141ab53ull, 0x2748774cdf8eeb99ull,
+    0x34b0bcb5e19b48a8ull, 0x391c0cb3c5c95a63ull, 0x4ed8aa4ae3418acbull,
+    0x5b9cca4f7763e373ull, 0x682e6ff3d6b2b8a3ull, 0x748f82ee5defb2fcull,
+    0x78a5636f43172f60ull, 0x84c87814a1f0ab72ull, 0x8cc702081a6439ecull,
+    0x90befffa23631e28ull, 0xa4506cebde82bde9ull, 0xbef9a3f7b2c67915ull,
+    0xc67178f2e372532bull, 0xca273eceea26619cull, 0xd186b8c721c0c207ull,
+    0xeada7dd6cde0eb1eull, 0xf57d4f7fee6ed178ull, 0x06f067aa72176fbaull,
+    0x0a637dc5a2c898a6ull, 0x113f9804bef90daeull, 0x1b710b35131c471bull,
+    0x28db77f523047d84ull, 0x32caab7b40c72493ull, 0x3c9ebe0a15c9bebcull,
+    0x431d67c49c100d4cull, 0x4cc5d4becb3e42b6ull, 0x597f299cfc657e2aull,
+    0x5fcb6fab3ad6faecull, 0x6c44198c4a475817ull
+#else
     0x428a2f98d728ae22, 0x7137449123ef65cd, 0xb5c0fbcfec4d3b2f,
     0xe9b5dba58189dbbc, 0x3956c25bf348b538, 0x59f111f1b605d019,
     0x923f82a4af194f9b, 0xab1c5ed5da6d8118, 0xd807aa98a3030242,
@@ -206,7 +235,9 @@ static const uint64_t mg_sha256_k2[80] = {
     0x0a637dc5a2c898a6, 0x113f9804bef90dae, 0x1b710b35131c471b,
     0x28db77f523047d84, 0x32caab7b40c72493, 0x3c9ebe0a15c9bebc,
     0x431d67c49c100d4c, 0x4cc5d4becb3e42b6, 0x597f299cfc657e2a,
-    0x5fcb6fab3ad6faec, 0x6c44198c4a475817};
+    0x5fcb6fab3ad6faec, 0x6c44198c4a475817
+#endif
+};
 
 static void mg_sha384_transform(mg_sha384_ctx *ctx, const uint8_t data[]) {
   uint64_t m[80];
@@ -257,6 +288,16 @@ void mg_sha384_init(mg_sha384_ctx *ctx) {
   ctx->datalen = 0;
   ctx->bitlen[0] = 0;
   ctx->bitlen[1] = 0;
+#if defined(__DCC__)
+  ctx->state[0] = 0xcbbb9d5dc1059ed8ull;
+  ctx->state[1] = 0x629a292a367cd507ull;
+  ctx->state[2] = 0x9159015a3070dd17ull;
+  ctx->state[3] = 0x152fecd8f70e5939ull;
+  ctx->state[4] = 0x67332667ffc00b31ull;
+  ctx->state[5] = 0x8eb44a8768581511ull;
+  ctx->state[6] = 0xdb0c2e0d64f98fa7ull;
+  ctx->state[7] = 0x47b5481dbefa4fa4ull;
+#else
   ctx->state[0] = 0xcbbb9d5dc1059ed8;
   ctx->state[1] = 0x629a292a367cd507;
   ctx->state[2] = 0x9159015a3070dd17;
@@ -265,6 +306,7 @@ void mg_sha384_init(mg_sha384_ctx *ctx) {
   ctx->state[5] = 0x8eb44a8768581511;
   ctx->state[6] = 0xdb0c2e0d64f98fa7;
   ctx->state[7] = 0x47b5481dbefa4fa4;
+#endif
 }
 
 void mg_sha384_update(mg_sha384_ctx *ctx, const uint8_t *data, size_t len) {