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uvm32 initial version

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Toby Jaffey 2025-12-06 16:44:23 +00:00
commit c9d30b6d28
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38
apps/zig-mandel/src/uvm.zig Normal file
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const uvm32 = @cImport({
@cDefine("USE_MAIN", "1");
@cInclude("uvm32_target.h");
});
const std = @import("std");
pub inline fn println(val: [:0]const u8) void {
asm volatile ("csrw " ++ std.fmt.comptimePrint("0x{x}", .{uvm32.IOREQ_PRINTLN}) ++ ", %[arg1]"
:
: [arg1] "r" (val.ptr),
);
}
pub inline fn printd(val: u32) void {
asm volatile ("csrw " ++ std.fmt.comptimePrint("0x{x}", .{uvm32.IOREQ_PRINTD}) ++ ", %[arg1]"
:
: [arg1] "r" (val),
);
}
pub inline fn printx(val: u32) void {
asm volatile ("csrw " ++ std.fmt.comptimePrint("0x{x}", .{uvm32.IOREQ_PRINTX}) ++ ", %[arg1]"
:
: [arg1] "r" (val),
);
}
pub inline fn printc(val: u32) void {
asm volatile ("csrw " ++ std.fmt.comptimePrint("0x{x}", .{uvm32.IOREQ_PRINTC}) ++ ", %[arg1]"
:
: [arg1] "r" (val),
);
}
pub inline fn yield() void {
asm volatile (std.fmt.comptimePrint("csrwi 0x{x}, 0", .{uvm32.IOREQ_YIELD}));
}