73 строки
1.8 KiB
Plaintext
73 строки
1.8 KiB
Plaintext
# 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") {
|
|
declare_args() {
|
|
# Version of the ARM processor when compiling on ARM. Ignored on non-ARM
|
|
# platforms.
|
|
arm_version = 7
|
|
|
|
# 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"
|
|
}
|
|
}
|
|
}
|