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feat: pass arm.gba

This commit is contained in:
Rekai Nyangadzayi Musuka 2022-02-06 05:06:25 -04:00
parent fcde905ae1
commit 225c0f7d55
1 changed files with 11 additions and 4 deletions
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15
src/cpu/arm/block_data_transfer.zig
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@ -48,10 +48,17 @@ pub fn blockDataTransfer(comptime P: bool, comptime U: bool, comptime S: bool, c
var address = start;
if (rlist == 0) {
if (L) {
cpu.r[15] = bus.read32(address);
var pc_addr = cpu.r[rn];
if (U) {
pc_addr += if (P) 4 else 0;
} else {
bus.write32(address, cpu.r[15] + 8);
pc_addr -= 0x40 - if (!P) 4 else 0;
}
if (L) {
cpu.r[15] = bus.read32(pc_addr);
} else {
bus.write32(pc_addr, cpu.r[15] + 8);
}
cpu.r[rn] = if (U) cpu.r[rn] + 0x40 else cpu.r[rn] - 0x40;
@ -71,7 +78,7 @@ pub fn blockDataTransfer(comptime P: bool, comptime U: bool, comptime S: bool, c
}
}
if (W and L and opcode >> rn & 1 == 0) cpu.r[rn] = new_base;
if (W and L and rlist >> rn & 1 == 0) cpu.r[rn] = new_base;
}
fn transfer(cpu: *Arm7tdmi, bus: *Bus, r15_present: bool, i: u5, address: u32) void {