Ryan Macnak
8a16c74eb6
Change-Id: I57374044d7367c1d1f8950f7c3b49b99db335e2a Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/484720 Reviewed-by: Alexander Aprelev <aam@google.com> Commit-Queue: Ryan Macnak <rmacnak@google.com>
78 lines
2.0 KiB
Plaintext
78 lines
2.0 KiB
Plaintext
# Copyright 2014 The Chromium Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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if (current_cpu == "arm" || current_cpu == "arm64") {
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declare_args() {
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# Version of the ARM processor when compiling on ARM. Ignored on non-ARM
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# platforms.
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if (current_cpu == "arm") {
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arm_version = 7
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} else if (current_cpu == "arm64") {
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arm_version = 8
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} else {
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assert(false, "Unconfigured arm version")
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}
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# The ARM floating point mode. This is either the string "hard", "soft", or
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# "softfp". An empty string means to use the default one for the
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# arm_version.
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arm_float_abi = ""
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# The ARM variant-specific tuning mode. This will be a string like "armv6"
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# or "cortex-a15". An empty string means to use the default for the
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# arm_version.
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arm_tune = ""
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# Whether to use the neon FPU instruction set or not.
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arm_use_neon = true
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# Whether to enable optional NEON code paths.
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arm_optionally_use_neon = false
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if (is_ios) {
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arm_use_neon = false
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arm_optionally_use_neon = false
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}
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}
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assert(arm_float_abi == "" || arm_float_abi == "hard" ||
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arm_float_abi == "soft" || arm_float_abi == "softfp")
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if (arm_version == 6) {
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arm_arch = "armv6"
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if (arm_tune != "") {
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arm_tune = ""
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}
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if (arm_float_abi == "") {
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arm_float_abi = "softfp"
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}
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arm_fpu = "vfp"
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# Thumb is a reduced instruction set available on some ARM processors that
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# has increased code density.
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arm_use_thumb = false
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} else if (arm_version == 7) {
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arm_arch = "armv7-a"
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if (arm_tune == "") {
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arm_tune = "generic-armv7-a"
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}
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if (arm_float_abi == "") {
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arm_float_abi = "softfp"
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}
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arm_use_thumb = true
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if (arm_use_neon) {
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arm_fpu = "neon"
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} else {
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arm_fpu = "vfpv3-d16"
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}
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}
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}
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if (current_cpu == "arm64") {
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arm_control_flow_integrity = "none"
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}
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