Index: build/config/arm.gni |
diff --git a/build/config/arm.gni b/build/config/arm.gni |
new file mode 100644 |
index 0000000000000000000000000000000000000000..429a250b21dba25883b43bb0f29e7f5563deb3e9 |
--- /dev/null |
+++ b/build/config/arm.gni |
@@ -0,0 +1,78 @@ |
+# Copyright 2014 The Chromium Authors. All rights reserved. |
+# Use of this source code is governed by a BSD-style license that can be |
+# found in the LICENSE file. |
+ |
+if (current_cpu == "arm" || current_cpu == "arm64") { |
+ declare_args() { |
+ # Version of the ARM processor when compiling on ARM. Ignored on non-ARM |
+ # platforms. |
+ if (current_cpu == "arm") { |
+ arm_version = 7 |
+ } else if(current_cpu == "arm64") { |
+ arm_version = 8 |
+ } else { |
+ assert(false, "Unconfigured arm version") |
+ } |
+ |
+ # The ARM floating point mode. This is either the string "hard", "soft", or |
+ # "softfp". An empty string means to use the default one for the |
+ # arm_version. |
+ arm_float_abi = "" |
+ |
+ # The ARM variant-specific tuning mode. This will be a string like "armv6" |
+ # or "cortex-a15". An empty string means to use the default for the |
+ # arm_version. |
+ arm_tune = "" |
+ |
+ # Whether to use the neon FPU instruction set or not. |
+ arm_use_neon = true |
+ |
+ # Whether to enable optional NEON code paths. |
+ arm_optionally_use_neon = false |
+ |
+ if (is_android) { |
+ arm_use_neon = false |
+ arm_optionally_use_neon = true |
+ } |
+ |
+ if (is_ios) { |
+ arm_use_neon = false |
+ arm_optionally_use_neon = false |
+ } |
+ } |
+ |
+ assert(arm_float_abi == "" || arm_float_abi == "hard" || |
+ arm_float_abi == "soft" || arm_float_abi == "softfp") |
+ |
+ if (arm_version == 6) { |
+ arm_arch = "armv6" |
+ if (arm_tune != "") { |
+ arm_tune = "" |
+ } |
+ if (arm_float_abi == "") { |
+ arm_float_abi = "softfp" |
+ } |
+ arm_fpu = "vfp" |
+ |
+ # Thumb is a reduced instruction set available on some ARM processors that |
+ # has increased code density. |
+ arm_use_thumb = false |
+ } else if (arm_version == 7) { |
+ arm_arch = "armv7-a" |
+ if (arm_tune == "") { |
+ arm_tune = "generic-armv7-a" |
+ } |
+ |
+ if (arm_float_abi == "") { |
+ arm_float_abi = "softfp" |
+ } |
+ |
+ arm_use_thumb = true |
+ |
+ if (arm_use_neon) { |
+ arm_fpu = "neon" |
+ } else { |
+ arm_fpu = "vfpv3-d16" |
+ } |
+ } |
+} |