arch/common/BUILD.bazel

# SPDX-FileCopyrightText: Copyright 2025 The Pigweed Authors
# SPDX-License-Identifier: Apache-2.0

load("@rules_cc//cc:cc_library.bzl", "cc_library")
load("//bazel:cc.bzl", "zephyr_cc_library")
load("//bazel:linker_fragment.bzl", "zephyr_linker_fragment")

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

cc_library(
    name = "interface",
    hdrs = glob(["include/**/*.h"], allow_empty = True),
    includes = ["include"],
)

zephyr_cc_library(
    name = "common",
    srcs = [
        "init.c",
    ] + select({
        "@zephyr_kconfig//:CONFIG_XIP=true": ["xip.c"],
        "//conditions:default": [],
    }) + select({
        "//conditions:default": [],
        "@zephyr_kconfig//:CONFIG_GEN_ISR_TABLES=true": [
            "sw_isr_common.c",
        ],
    }) + select({
        "//conditions:default": [],
        "@zephyr_kconfig//:CONFIG_DYNAMIC_INTERRUPTS=true": ["dynamic_isr.c"],
    }) + select({
        "//conditions:default": [],
        "@zephyr_kconfig//:CONFIG_MULTI_LEVEL_INTERRUPTS=true": ["multilevel_irq.c"],
    }) + select({
        "//conditions:default": [],
        "@zephyr_kconfig//:CONFIG_SHARED_INTERRUPTS=true": ["shared_irq.c"],
    }) + select({
        "//conditions:default": [],
        "@zephyr_kconfig//:CONFIG_SEMIHOST=true": ["semihost.c"],
    }),
    hdrs = glob(["include/**/*.h"], allow_empty = True),
    copts = [
        "-ffunction-sections",
        "-fdata-sections",
    ],
    deps = [
        ":interface",
    ],
)

zephyr_cc_library(
    name = "isr_tables",
    srcs = select({
        "//conditions:default": [],
        "@zephyr_kconfig//:CONFIG_GEN_ISR_TABLES=true": ["isr_tables.c"],
    }),
    copts = ["-includezephyr/autoconf.h"],
    deps = [
        "//:autoconf_library",
    ],
)

cc_library(
    name = "linker_includes",
    hdrs = glob(["**/*.ld"], allow_empty = True),
)

zephyr_linker_fragment(
    name = "intlist_ld",
    srcs = select({
        "//conditions:default": [],
        "@zephyr_kconfig//:CONFIG_GEN_ISR_TABLES=true": [
            "//include:zephyr/linker/intlist.ld",
        ],
    }),
    location = "SECTIONS",
)

zephyr_linker_fragment(
    name = "isr_local_drop_ld",
    srcs = [],
    location = "SECTIONS",
)

zephyr_linker_fragment(
    name = "irq_vector_table_section_ld",
    srcs = select({
        "//conditions:default": [],
        "@zephyr_kconfig//:CONFIG_GEN_IRQ_VECTOR_TABLE=true": [
            "//include:zephyr/linker/irq-vector-table-section.ld",
        ],
    }),
    location = "ROM_START",
    sort_key = "0x0vectors",
)

zephyr_linker_fragment(
    name = "ramfunc_ld",
    srcs = select({
        "//conditions:default": [],
        "@zephyr_kconfig//:CONFIG_ARCH_HAS_RAMFUNC_SUPPORT=true": [
            "ramfunc.ld",
        ],
    }),
    location = "RAM_SECTIONS",
)

zephyr_linker_fragment(
    name = "nocache_ld",
    srcs = select({
        "//conditions:default": [],
        "@zephyr_kconfig//:CONFIG_NOCACHE_MEMORY=true": [
            "nocache.ld",
        ],
    }),
    location = "RAM_SECTIONS",
)

zephyr_linker_fragment(
    name = "rom_start_address_ld",
    srcs = ["rom_start_address.ld"],
    location = "ROM_START",
    sort_key = "!",
)

zephyr_linker_fragment(
    name = "fill_with_zeros_ld",
    srcs = ["fill_with_zeros.ld"],
    location = "ROM_START",
    sort_key = "$",
)

zephyr_linker_fragment(
    name = "rom_start_offset_ld",
    srcs = ["rom_start_offset.ld"],
    location = "ROM_START",
    sort_key = "0x0",
)

zephyr_linker_fragment(
    name = "linker_fragments",
    deps = [
        ":intlist_ld",
        ":irq_vector_table_section_ld",
        ":isr_local_drop_ld",
        ":nocache_ld",
        ":ramfunc_ld",
    ] + select({
        "//conditions:default": [],
        "@zephyr_kconfig//:CONFIG_ARCH_SUPPORTS_ROM_OFFSET=true": [
            ":fill_with_zeros_ld",
            ":rom_start_address_ld",
            ":rom_start_offset_ld",
        ],
    }),
)