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feat(cpu): implement format 18 THUMB instructions

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This commit is contained in:
Rekai Nyangadzayi Musuka
2022-10-21 05:12:09 -03:00
parent 443520ecae
commit 7013389288
2 changed files with 20 additions and 0 deletions
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5
src/cpu.zig
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@@ -33,6 +33,7 @@ const format13 = @import("cpu/thumb/format13.zig").format13;
const format14 = @import("cpu/thumb/format14.zig").format14;
const format15 = @import("cpu/thumb/format15.zig").format15;
const format16 = @import("cpu/thumb/format16.zig").format16;
const format18 = @import("cpu/thumb/format18.zig").format18;
const format19 = @import("cpu/thumb/format19.zig").format19;
pub const ArmInstrFn = fn (*Arm7tdmi, *Bus, u32) void;
@@ -472,6 +473,10 @@ fn thumbPopulate() [0x400]ThumbInstrFn {
lut[i] = format16(cond);
}
if (i >> 5 & 0x1F == 0b11100) {
lut[i] = format18();
}
if (i >> 6 & 0xF == 0b1111) {
const is_low = i >> 5 & 1 == 1;