funkey/gpsp_libretro
1
0
Fork 0
mirror of https://github.com/FunKey-Project/gpsp_libretro.git synced 2025-12-13 02:38:51 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity

Implement idle loop skipping. The framerate on SMA4 is NINE times faster this way!

Browse Source
This commit is contained in:
Alcaro 2014-12-13 22:05:06 +01:00
parent 7e08f8c67b
commit 3c1474e99d
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
cpu_orig.c
View File

@ -3275,6 +3275,8 @@ skip_instruction:
/* End of Execute ARM instruction */ /* End of Execute ARM instruction */
cycles_remaining -= cycles_per_instruction; cycles_remaining -= cycles_per_instruction;
if (pc == idle_loop_target_pc && cycles_remaining > 0) cycles_remaining = 0;
} while(cycles_remaining > 0); } while(cycles_remaining > 0);
collapse_flags(); collapse_flags();
@ -4242,6 +4244,8 @@ thumb_loop:
/* End of Execute THUMB instruction */ /* End of Execute THUMB instruction */
cycles_remaining -= cycles_per_instruction; cycles_remaining -= cycles_per_instruction;
if (pc == idle_loop_target_pc && cycles_remaining > 0) cycles_remaining = 0;
} while(cycles_remaining > 0); } while(cycles_remaining > 0);
collapse_flags(); collapse_flags();