coco3: uput/uget bugfix: restore kernel's mmu while iterating

diff --git a/Kernel/platform-coco3/usermem_gime.s b/Kernel/platform-coco3/usermem_gime.s
index 5addfd7..bc981e4 100644 (file)
--- a/Kernel/platform-coco3/usermem_gime.s
+++ b/Kernel/platform-coco3/usermem_gime.s
@@ -195,7 +195,7 @@ min:
        rts
 a@     std     ,u
        rts
-       
+
 ;;;  A faster user-kernel space copy
 ;;;    takes: usr = usr space ptr
 ;;;    takes: krn = kernel space ptr
@@ -264,7 +264,13 @@ a@ lda     ,u+             ; get a byte
        sta     ,x+             ; store it
        leay    -1,y            ; bump counter
        bne     a@              ; loop if not done
-       ;; inc outter loop
+       ;; end inner loop
+       ;; clean up kernel mmu's for next mapping or returning
+       ldd     #$0001          ; restore kernel mapping (manually)
+       std     $ffa8
+       ldd     #$0203
+       std     $ffaa   
+       ;; increment out loop variables
        puls    u               ; restore data stack
        ldd     krn             ; add this iteration's byte count
        addd    icount          ; from source address
@@ -277,10 +283,6 @@ a@ lda     ,u+             ; get a byte
        std     count
        lbne    b@              ; if bytes left to copy then repeat
        ;; return
-       ldd     #$0001          ; restore kernel mapping (manually)
-       std     $ffa8
-       ldd     #$0203
-       std     $ffaa
        ldx     #0              ; return #0 - success
        puls    u,y,cc,pc       ; return