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28 lines
897 B
28 lines
897 B
7 months ago
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// Copyright 2019 The Chromium OS 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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package main
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import (
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"strings"
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)
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func processThumbCodeFlags(builder *commandBuilder) {
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arch := builder.target.arch
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if builder.target.abi != "eabi" && (strings.HasPrefix(arch, "armv7") || strings.HasPrefix(arch, "armv8")) {
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// ARM32 specfic:
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// 1. Generate thumb codes by default. GCC is configured with
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// --with-mode=thumb and defaults to thumb mode already. This
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// changes the default behavior of clang and doesn't affect GCC.
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// 2. Do not force frame pointers on ARM32 (https://crbug.com/693137).
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builder.addPreUserArgs("-mthumb")
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builder.transformArgs(func(arg builderArg) string {
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if !arg.fromUser && arg.value == "-fno-omit-frame-pointer" {
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return ""
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}
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return arg.value
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})
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}
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}
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