197
198 if (FLAG_IS_DEFAULT(UseCRC32Intrinsics)) {
199 UseCRC32Intrinsics = true;
200 }
201
202 if (UseCRC32CIntrinsics) {
203 if (!FLAG_IS_DEFAULT(UseCRC32CIntrinsics))
204 warning("CRC32C intrinsics are not available on this CPU");
205 FLAG_SET_DEFAULT(UseCRC32CIntrinsics, false);
206 }
207
208 if (auxv & (HWCAP_SHA1 | HWCAP_SHA2)) {
209 if (FLAG_IS_DEFAULT(UseSHA)) {
210 FLAG_SET_DEFAULT(UseSHA, true);
211 }
212 } else if (UseSHA) {
213 warning("SHA instructions are not available on this CPU");
214 FLAG_SET_DEFAULT(UseSHA, false);
215 }
216
217 if (!UseSHA) {
218 FLAG_SET_DEFAULT(UseSHA1Intrinsics, false);
219 FLAG_SET_DEFAULT(UseSHA256Intrinsics, false);
220 FLAG_SET_DEFAULT(UseSHA512Intrinsics, false);
221 } else {
222 if (auxv & HWCAP_SHA1) {
223 if (FLAG_IS_DEFAULT(UseSHA1Intrinsics)) {
224 FLAG_SET_DEFAULT(UseSHA1Intrinsics, true);
225 }
226 } else if (UseSHA1Intrinsics) {
227 warning("SHA1 instruction is not available on this CPU.");
228 FLAG_SET_DEFAULT(UseSHA1Intrinsics, false);
229 }
230 if (auxv & HWCAP_SHA2) {
231 if (FLAG_IS_DEFAULT(UseSHA256Intrinsics)) {
232 FLAG_SET_DEFAULT(UseSHA256Intrinsics, true);
233 }
234 } else if (UseSHA256Intrinsics) {
235 warning("SHA256 instruction (for SHA-224 and SHA-256) is not available on this CPU.");
236 FLAG_SET_DEFAULT(UseSHA256Intrinsics, false);
237 }
238 if (UseSHA512Intrinsics) {
239 warning("SHA512 instruction (for SHA-384 and SHA-512) is not available on this CPU.");
240 FLAG_SET_DEFAULT(UseSHA512Intrinsics, false);
241 }
242 if (!(UseSHA1Intrinsics || UseSHA256Intrinsics || UseSHA512Intrinsics)) {
243 FLAG_SET_DEFAULT(UseSHA, false);
244 }
245 }
246
247 // This machine allows unaligned memory accesses
248 if (FLAG_IS_DEFAULT(UseUnalignedAccesses)) {
249 FLAG_SET_DEFAULT(UseUnalignedAccesses, true);
250 }
251
252 if (FLAG_IS_DEFAULT(UseMultiplyToLenIntrinsic)) {
253 UseMultiplyToLenIntrinsic = true;
254 }
255
256 if (FLAG_IS_DEFAULT(UseBarriersForVolatile)) {
257 UseBarriersForVolatile = (_cpuFeatures & CPU_DMB_ATOMICS) != 0;
258 }
259
260 if (FLAG_IS_DEFAULT(UsePopCountInstruction)) {
261 UsePopCountInstruction = true;
262 }
263
264 #ifdef COMPILER2
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197
198 if (FLAG_IS_DEFAULT(UseCRC32Intrinsics)) {
199 UseCRC32Intrinsics = true;
200 }
201
202 if (UseCRC32CIntrinsics) {
203 if (!FLAG_IS_DEFAULT(UseCRC32CIntrinsics))
204 warning("CRC32C intrinsics are not available on this CPU");
205 FLAG_SET_DEFAULT(UseCRC32CIntrinsics, false);
206 }
207
208 if (auxv & (HWCAP_SHA1 | HWCAP_SHA2)) {
209 if (FLAG_IS_DEFAULT(UseSHA)) {
210 FLAG_SET_DEFAULT(UseSHA, true);
211 }
212 } else if (UseSHA) {
213 warning("SHA instructions are not available on this CPU");
214 FLAG_SET_DEFAULT(UseSHA, false);
215 }
216
217 if (UseSHA && (auxv & HWCAP_SHA1)) {
218 if (FLAG_IS_DEFAULT(UseSHA1Intrinsics)) {
219 FLAG_SET_DEFAULT(UseSHA1Intrinsics, true);
220 }
221 } else if (UseSHA1Intrinsics) {
222 warning("Intrinsics for SHA-1 crypto hash functions not available.");
223 FLAG_SET_DEFAULT(UseSHA1Intrinsics, false);
224 }
225
226 if (UseSHA && (auxv & HWCAP_SHA2)) {
227 if (FLAG_IS_DEFAULT(UseSHA256Intrinsics)) {
228 FLAG_SET_DEFAULT(UseSHA256Intrinsics, true);
229 }
230 } else if (UseSHA256Intrinsics) {
231 warning("Intrinsics for SHA-224 and SHA-256 crypto hash functions not available.");
232 FLAG_SET_DEFAULT(UseSHA1Intrinsics, false);
233 }
234
235 if (UseSHA512Intrinsics) {
236 warning("Intrinsics for SHA-384 and SHA-512 crypto hash functions not available.");
237 FLAG_SET_DEFAULT(UseSHA512Intrinsics, false);
238 }
239
240 if (!(UseSHA1Intrinsics || UseSHA256Intrinsics || UseSHA512Intrinsics)) {
241 FLAG_SET_DEFAULT(UseSHA, false);
242 }
243
244 // This machine allows unaligned memory accesses
245 if (FLAG_IS_DEFAULT(UseUnalignedAccesses)) {
246 FLAG_SET_DEFAULT(UseUnalignedAccesses, true);
247 }
248
249 if (FLAG_IS_DEFAULT(UseMultiplyToLenIntrinsic)) {
250 UseMultiplyToLenIntrinsic = true;
251 }
252
253 if (FLAG_IS_DEFAULT(UseBarriersForVolatile)) {
254 UseBarriersForVolatile = (_cpuFeatures & CPU_DMB_ATOMICS) != 0;
255 }
256
257 if (FLAG_IS_DEFAULT(UsePopCountInstruction)) {
258 UsePopCountInstruction = true;
259 }
260
261 #ifdef COMPILER2
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