Daniel Samson
37326c7664
With every consumer migrated (C2), nothing imports `runtime` or `system` any longer. Removed both shim files and their build.zig module definitions, dropped the `runtime` entry from `default_imports`, and rewrote the per-binary root shim (library/kernel/root.zig) to import `start` (_start + panic) and `logging` (std_options) directly instead of through `runtime`. addUserBinary/addThreadedUserBinary/addUserBinaryImpl lose their `runtime_module` parameter; the root module now pulls the two modules it needs out of `default_imports` via a small findImport helper. The runtime dumping ground is gone: the userspace library is library/kernel (concern modules), library/device (driver/pci/usb/block/model/mmio/acpi data), library/client (display, input service clients), and library/protocol (wire contracts). Consumers @import concern modules by name. Verified: zig build, zig build test, and QEMU (smoke, thread-spawn, thread-mutex, logger, display-native, device-manager, usb-storage, input).
27 lines
1.1 KiB
Zig
27 lines
1.1 KiB
Zig
//! The root module every user binary is compiled through (build.zig,
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//! `addUserBinary`). The program's own file is imported as `program`, and this
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//! shim contributes the declarations Zig resolves from the compilation root —
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//! `main` (dispatched by start's comptime dispatch) and the panic handler — and
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//! pulls in the `_start` entry shim. A program therefore only defines
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//! `pub fn main`; nothing else is required in its source file.
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const start = @import("start");
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const logging = @import("logging");
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const program = @import("program");
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/// Resolved as `@import("root").main` by start's comptime dispatch.
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pub const main = program.main;
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/// The panic handler for every safety check in the image (start.panic).
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pub const panic = start.panic;
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/// std.log for every user binary goes to the tagged kernel log ring (the kernel
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/// stamps the sender; see the logging module). A program overrides by declaring
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/// its own `pub const std_options`.
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pub const std_options: @import("std").Options =
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if (@hasDecl(program, "std_options")) program.std_options else logging.default_options;
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comptime {
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_ = &start._start; // pull the entry shim into the image
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}
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