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feat(cpu): implement HALT

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This commit is contained in:
Rekai Nyangadzayi Musuka
2023-11-04 01:21:52 -05:00
parent 16b3325fe3
commit 83f94f6d9d
4 changed files with 52 additions and 15 deletions
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4
src/core/nds9/Cp15.zig
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@@ -8,6 +8,8 @@ control: u32 = 0x0005_2078,
dtcm_size_base: u32 = 0x0300_000A,
itcm_size_base: u32 = 0x0000_0020,
wait_for_interrupt: bool = false,
// Protection Unit
// cache_bits_data_unified: u32 = 0x0000_0000,
// cache_write_bufability: u32 = 0x0000_0000, // For Data Protection Regions
@@ -73,7 +75,7 @@ pub fn write(self: *@This(), op1: u3, cn: u4, cm: u4, op2: u3, value: u32) void
0b000_0110_0111_001,
=> log.err("TODO: write to PU instruction region #{}", .{cm}),
0b000_0111_0000_100 => log.err("TODO: halt ARM946E-S", .{}),
0b000_0111_0000_100 => self.wait_for_interrupt = true, // NDS9 Halt
0b000_0111_0101_000 => log.err("TODO: invalidate instruction cache", .{}),
0b000_0111_0110_000 => log.err("TODO: invalidate data cache", .{}),
0b000_0111_1010_100 => log.err("TODO: drain write buffer", .{}),