zircon/kernel/lib/code-patching/BUILD.gn

# Copyright 2019 The Fuchsia Authors
#
# Use of this source code is governed by a MIT-style
# license that can be found in the LICENSE file or at
# https://opensource.org/licenses/MIT

import("//build/cpp/library_headers.gni")
import("//build/toolchain/toolchain_environment.gni")
import("//build/zircon/zircon_cpu.gni")
import("//zircon/system/ulib/hwreg/hwreg_asm_header.gni")

source_set("code-patching") {
  public_deps = [ ":headers" ]

  if (toolchain_environment == "kernel.phys") {
    sources = [ "code-patching.cc" ]
    deps = [ "//zircon/kernel/phys:main" ]
  }
}

source_set("self-test") {
  public = [ "include/lib/code-patching/self-test.h" ]
  public_configs = [ ":headers.config" ]
  sources = [ "self-test.S" ]
  deps = [
    ":case-id-asm",
    "//zircon/kernel/lib/arch",
  ]
}

library_headers("headers") {
  headers = [
    "lib/code-patching/asm.h",
    "lib/code-patching/code-patches.h",
    "lib/code-patching/code-patching.h",
  ]

  public_deps = [ ":case-id-asm" ]

  if (is_kernel) {
    public_deps += [
      "//zircon/kernel/lib/ktl:headers",

      # <lib/code-patching/code-patches.h> has #include <lib/arch/cache.h>.
      # <lib/code-patching/code-patching.h> has #include <lib/arch/nop.h>.
      "//zircon/kernel/lib/arch:headers",

      # <lib/code-patching/code-patches.h> has #include <lib/zbitl/items/bootfs.h>.
      "//src/lib/zbitl:headers",

      # <lib/code-patching/code-patches.h> has #include <lib/fit/result.h>.
      "//sdk/lib/fit:headers",

      # <lib/code-patching/code-patches.h> has #include <arch/code-patches/case-id.h>.
      "//zircon/kernel/arch/$zircon_cpu/code-patches:headers",
    ]
  }
}

hwreg_asm_header("case-id-asm") {
  visibility = [ ":*" ]
  output_name = "arch/code-patches/case-id-asm.h"
  sources = [ "gen-case-id-asm.cc" ]
  include_dirs = [ "//zircon/kernel" ]
}