toolchain/mips/BUILD.bazel

# Copyright 2026 The Pigweed Authors
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may not
# use this file except in compliance with the License. You may obtain a copy of
# the License at
#
#     https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations under
# the License.

load("@rules_cc//cc/toolchains:args.bzl", "cc_args")
load("@rules_cc//cc/toolchains:toolchain.bzl", "cc_toolchain")
load("//build_config:repo_paths.bzl", "get_repo_root")

package(default_visibility = ["//visibility:public"])

licenses(["notice"])

cc_args(
    name = "data_and_function_sections",
    actions = [
        "@rules_cc//cc/toolchains/actions:assembly_actions",
        "@rules_cc//cc/toolchains/actions:c_compile_actions",
        "@rules_cc//cc/toolchains/actions:cpp_compile_actions",
    ],
    args = [
        "-ffunction-sections",
        "-fdata-sections",
    ],
)

_ZEPHYR_SDK_MIPS_TOOLCHAIN_ROOT = get_repo_root("@zephyr_sdk_mips")

cc_args(
    name = "add_stddef",
    actions = [
        "@rules_cc//cc/toolchains/actions:assembly_actions",
        "@rules_cc//cc/toolchains/actions:c_compile_actions",
        "@rules_cc//cc/toolchains/actions:cpp_compile_actions",
    ],
    args = [
        "-isystem",
        _ZEPHYR_SDK_MIPS_TOOLCHAIN_ROOT + "/lib/gcc/mips-zephyr-elf/12.2.0/include", # PLACEHOLDER
        "-isystem",
        _ZEPHYR_SDK_MIPS_TOOLCHAIN_ROOT + "/lib/gcc/mips-zephyr-elf/12.2.0/include-fixed", # PLACEHOLDER
    ],
)

cc_args(
    name = "symbol_garbage_collection",
    actions = ["@rules_cc//cc/toolchains/actions:link_actions"],
    args = ["-Wl,--gc-sections"],
)

cc_args(
    name = "common",
    actions = [
        "@rules_cc//cc/toolchains/actions:assembly_actions",
        "@rules_cc//cc/toolchains/actions:c_compile_actions",
    ],
    args = [
        "-std=c99",
        "-DCONFIG_MIPS=1",
        "-G0",
        "-march=mips32r2",
        "-I",
        "external/zephyr-bazel++zephyr_patch_file+zephyr/include/custom",
    ] + select({
        "@zephyr_kconfig//:CONFIG_BIG_ENDIAN=true": ["-EB"],
        "//conditions:default": ["-EL"],
    }),
)

cc_args(
    name = "asm_specific",
    actions = ["@rules_cc//cc/toolchains/actions:assembly_actions"],
    args = [
        "-D_ASMLANGUAGE=1",
        "-isystem",
        _ZEPHYR_SDK_MIPS_TOOLCHAIN_ROOT + "/mips-zephyr-elf/include",
    ],
)

cc_toolchain(
    name = "mips_gcc",
    args = [
        "//toolchain/args:oz",
        "//toolchain/args:debugging",
        "//toolchain/args:reduced_size",
        "//toolchain/args:no_canonical_prefixes",
        "//toolchain/args:common_warnings",
        "//toolchain/args:color_diagnostics",
        ":data_and_function_sections",
        ":symbol_garbage_collection",
        ":common",
        ":add_stddef",
        ":asm_specific",
    ],
    enabled_features = [
        "@rules_cc//cc/toolchains/args:experimental_replace_legacy_action_config_features",
        "//toolchain/capability:compiler_is_gcc",
        "//toolchain/capability:linker_is_gcc",
    ],
    supports_param_files = 0,
    tags = ["manual"],
    tool_map = "@zephyr_sdk_mips//:all_tools",
)

toolchain(
    name = "mips_gcc_cc",
    target_compatible_with = [
        "@zephyr//constraints:mips",
    ],
    toolchain = ":mips_gcc",
    toolchain_type = "@bazel_tools//tools/cpp:toolchain_type",
)