Avoid using %g6 and %g7, as they are reserved for

operating sytem use. Use %i5 and %o7 instead. Also moved %g4 to %g1.

Rev: src/nettle/sparc/aes.asm:1.70

diff --git a/sparc/aes.asm b/sparc/aes.asm
index 7866df3b46390d686153d17fc4093b6936fe4cce..f6d05ed4f83dcd814a3d73fb9903f821d6acf6a8 100644 (file)
--- a/sparc/aes.asm
+++ b/sparc/aes.asm
@@ -22,9 +22,9 @@
 ! (see gcc/config/sparc.h). We should probably use only %g1-%g3 to be safe.
        
        ! Used registers:       %l0,1,2,3,4,5,6,7
-       !                       %i0,1,2,3,4 (%i6=%fp, %i7 = return)
-       !                       %o0,1,2,3 (%o6=%sp)
-       !                       %g2,3,4,5,6,7
+       !                       %i0,1,2,3,4,5 (%i6=%fp, %i7 = return)
+       !                       %o0,1,2,3,4,5,7 (%o6=%sp)
+       !                       %g1,2,3,5
        
        .file   "aes.asm"
        
@@ -50,13 +50,13 @@ define(nrounds, %l3)
 ! Loop variables
 define(round, %l4)
 define(i, %l5)
-define(key, %g7)
+define(key, %o4)
 
 ! Further loop invariants
 define(T0, %l6)
 define(T1, %l7)
 define(T2, %g5)
-define(T3, %g6)
+define(T3, %o7)
 define(IDX1, %i5)
 define(IDX3, %o5)
 
@@ -98,7 +98,7 @@ _aes_crypt:
 .Lblock_loop:
        ! For stop condition. Note that src is incremented in the
        ! delay slot
-       add     src, 8, %g4
+       add     src, 8, %g1
        
 .Lsource_loop:
        ldub    [src+3], t3
@@ -117,7 +117,7 @@ _aes_crypt:
        or      t3, t0, t3
        xor     t3, t2, t3
        
-       cmp     src, %g4
+       cmp     src, %g1
        st      t3, [src+%g3]
        bleu    .Lsource_loop
        add     src, 4, src