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const std = @import("../std.zig");
/// A protocol is an interface identified by a GUID.
pub const protocols = @import("uefi/protocols.zig");
/// Status codes returned by EFI interfaces
pub const Status = @import("uefi/status.zig").Status;
pub const tables = @import("uefi/tables.zig");
/// The memory type to allocate when using the pool
/// Defaults to .LoaderData, the default data allocation type
/// used by UEFI applications to allocate pool memory.
pub var efi_pool_memory_type: tables.MemoryType = .LoaderData;
pub const pool_allocator = @import("uefi/pool_allocator.zig").pool_allocator;
pub const raw_pool_allocator = @import("uefi/pool_allocator.zig").raw_pool_allocator;
/// The EFI image's handle that is passed to its entry point.
pub var handle: Handle = undefined;
/// A pointer to the EFI System Table that is passed to the EFI image's entry point.
pub var system_table: *tables.SystemTable = undefined;
/// A handle to an event structure.
pub const Event = *opaque {};
pub const MacAddress = extern struct {
address: [32]u8,
};
pub const Ipv4Address = extern struct {
address: [4]u8,
};
pub const Ipv6Address = extern struct {
address: [16]u8,
};
/// GUIDs must be align(8)
pub const Guid = extern struct {
time_low: u32,
time_mid: u16,
time_high_and_version: u16,
clock_seq_high_and_reserved: u8,
clock_seq_low: u8,
node: [6]u8,
/// Format GUID into hexadecimal lowercase xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx format
pub fn format(
self: @This(),
comptime f: []const u8,
options: std.fmt.FormatOptions,
writer: anytype,
) !void {
_ = options;
if (f.len == 0) {
const fmt = std.fmt.fmtSliceHexLower;
const time_low = @byteSwap(self.time_low);
const time_mid = @byteSwap(self.time_mid);
const time_high_and_version = @byteSwap(self.time_high_and_version);
return std.fmt.format(writer, "{:0>8}-{:0>4}-{:0>4}-{:0>2}{:0>2}-{:0>12}", .{
fmt(std.mem.asBytes(&time_low)),
fmt(std.mem.asBytes(&time_mid)),
fmt(std.mem.asBytes(&time_high_and_version)),
fmt(std.mem.asBytes(&self.clock_seq_high_and_reserved)),
fmt(std.mem.asBytes(&self.clock_seq_low)),
fmt(std.mem.asBytes(&self.node)),
});
} else {
@compileError("Unknown format character: '" ++ f ++ "'");
}
}
pub fn eql(a: std.os.uefi.Guid, b: std.os.uefi.Guid) bool {
return a.time_low == b.time_low and
a.time_mid == b.time_mid and
a.time_high_and_version == b.time_high_and_version and
a.clock_seq_high_and_reserved == b.clock_seq_high_and_reserved and
a.clock_seq_low == b.clock_seq_low and
std.mem.eql(u8, &a.node, &b.node);
}
};
/// An EFI Handle represents a collection of related interfaces.
pub const Handle = *opaque {};
/// This structure represents time information.
pub const Time = extern struct {
/// 1900 - 9999
year: u16,
/// 1 - 12
month: u8,
/// 1 - 31
day: u8,
/// 0 - 23
hour: u8,
/// 0 - 59
minute: u8,
/// 0 - 59
second: u8,
/// 0 - 999999999
nanosecond: u32,
/// The time's offset in minutes from UTC.
/// Allowed values are -1440 to 1440 or unspecified_timezone
timezone: i16,
daylight: packed struct {
_pad1: u6,
/// If true, the time has been adjusted for daylight savings time.
in_daylight: bool,
/// If true, the time is affected by daylight savings time.
adjust_daylight: bool,
},
/// Time is to be interpreted as local time
pub const unspecified_timezone: i16 = 0x7ff;
};
/// Capabilities of the clock device
pub const TimeCapabilities = extern struct {
/// Resolution in Hz
resolution: u32,
/// Accuracy in an error rate of 1e-6 parts per million.
accuracy: u32,
/// If true, a time set operation clears the device's time below the resolution level.
sets_to_zero: bool,
};
/// File Handle as specified in the EFI Shell Spec
pub const FileHandle = *opaque {};
test "GUID formatting" {
var bytes = [_]u8{ 137, 60, 203, 50, 128, 128, 124, 66, 186, 19, 80, 73, 135, 59, 194, 135 };
var guid = @bitCast(Guid, bytes);
var str = try std.fmt.allocPrint(std.testing.allocator, "{}", .{guid});
defer std.testing.allocator.free(str);
try std.testing.expect(std.mem.eql(u8, str, "32cb3c89-8080-427c-ba13-5049873bc287"));
}
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