paoda/zba
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

feat: minor performance improvements

Browse Source
This commit is contained in:
Rekai Nyangadzayi Musuka
2022-10-21 05:12:29 -03:00
parent ed792d71d3
commit 20f39176c6
4 changed files with 39 additions and 41 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
src/cpu.zig
View File

@@ -296,24 +296,22 @@ pub const Arm7tdmi = struct {
}
fn handleDMATransfers(self: *Self) bool {
if (self.bus.dma._0.step(self.bus)) return self.bus.dma._0.isBlocking();
if (self.bus.dma._1.step(self.bus)) return self.bus.dma._1.isBlocking();
if (self.bus.dma._2.step(self.bus)) return self.bus.dma._2.isBlocking();
if (self.bus.dma._3.step(self.bus)) return self.bus.dma._3.isBlocking();
if (self.bus.dma._0.check(self.bus)) return self.bus.dma._0.isBlocking();
if (self.bus.dma._1.check(self.bus)) return self.bus.dma._1.isBlocking();
if (self.bus.dma._2.check(self.bus)) return self.bus.dma._2.isBlocking();
if (self.bus.dma._3.check(self.bus)) return self.bus.dma._3.isBlocking();
return false;
}
fn thumbFetch(self: *Self) u16 {
const halfword = self.bus.read16(self.r[15]);
self.r[15] += 2;
return halfword;
defer self.r[15] += 2;
return self.bus.read16(self.r[15]);
}
fn fetch(self: *Self) u32 {
const word = self.bus.read32(self.r[15]);
self.r[15] += 4;
return word;
defer self.r[15] += 4;
return self.bus.read32(self.r[15]);
}
pub fn fakePC(self: *const Self) u32 {