make ep3 editors patch idempotent

2022-11-03 22:07:32 -07:00
parent 846100cf16
commit 92c51830bb
2 changed files with 89 additions and 40 deletions
@@ -0,0 +1,17 @@
+  # r3 = dest ptr
+  # r4 = src ptr
+  # r5 = size
+  addi    r5, r5, 3
+  rlwinm  r5, r5, 30, 2, 31 # r5 = number of words to copy
+  mtctr   r5
+  subi    r3, r3, 4 # r3 = r3 - 4 (so we can use stwu)
+  subi    r4, r4, 4 # r4 = r4 - 4 (so we can use lwzu)
+copy_word_again:
+  lwzu    r0, [r4 + 4]
+  stwu    [r3 + 4], r0
+  bdnz    copy_word_again
+
+  rlwinm  r4, r5, 2, 0, 29
+  addi    r3, r3, 4
+  sub     r3, r3, r4
+  .include FlushCachedCode