alex/agb
1
0
Fork 0
mirror of https://github.com/italicsjenga/agb.git synced 2024-12-23 08:11:33 +11:00
Code Issues Packages Projects Releases Wiki Activity

This has better code generation

Browse source
This commit is contained in:
Gwilym Inzani 2023-09-06 00:37:23 +01:00
parent 77445b304f
commit bb57298c54
1 changed files with 26 additions and 19 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

45
agb/src/display/tiled/vram_manager.rs
View file

@ -385,25 +385,32 @@ impl VRamManager {
let target_location = tile_reference.0.as_ptr() as *mut _; let target_location = tile_reference.0.as_ptr() as *mut _;
unsafe { unsafe {
core::arch::asm!( match tile_format {
"cmp r2, #0", TileFormat::FourBpp => core::arch::asm!(
"beq 1f", ".rept 2",
"ldmia r0!, {{r2-r5}}", "ldmia r0!, {{r2-r5}}",
"stmia r1!, {{r2-r5}}", "stmia r1!, {{r2-r5}}",
"ldmia r0!, {{r2-r5}}", ".endr",
"stmia r1!, {{r2-r5}}", inout("r0") tile_data_start => _,
"1:", inout("r1") target_location => _,
"ldmia r0!, {{r2-r5}}", out("r2") _,
"stmia r1!, {{r2-r5}}", out("r3") _,
"ldmia r0!, {{r2-r5}}", out("r4") _,
"stmia r1!, {{r2-r5}}", out("r5") _,
inout("r0") tile_data_start => _, ),
inout("r1") target_location => _, TileFormat::EightBpp => core::arch::asm!(
inout("r2") tile_format as u32 => _, ".rept 4",
out("r3") _, "ldmia r0!, {{r2-r5}}",
out("r4") _, "stmia r1!, {{r2-r5}}",
out("r5") _, ".endr",
); inout("r0") tile_data_start => _,
inout("r1") target_location => _,
out("r2") _,
out("r3") _,
out("r4") _,
out("r5") _,
),
}
} }
} }