progs: added remaining benchmarks and offset correction for timer

[calu.git] / progs / max.s

diff --git a/progs/max.s b/progs/max.s
new file mode 100644 (file)
index 0000000..0008d64
--- /dev/null
+++ b/progs/max.s
@@ -0,0 +1,91 @@
+#include "dt_inc.s"
+.data
+.org 0x0
+arr:
+       .fill 2
+       .fill 3
+       .fill 5
+       .fill 7
+       .fill 11
+       .fill 13
+       .fill 17
+       .fill 19
+       .fill 23
+       .fill 29
+       .fill 31
+       .fill 37
+       .fill 41
+       .fill 43
+       .fill 47
+       .fill 53
+
+str:
+       .ascii "hier das ergebnis: "
+.text
+.org 0x0
+start:
+       br+ main
+       br+ main
+       ret
+main:
+       call+ u_init
+       call+ u_recv_byte
+       call u_send_newline
+
+       ; benchprolog
+       call t_init
+       call t_stop
+       ldis r1, 0
+       call t_valset
+       call t_start
+       ; /benchprolog
+
+       ; max start
+       ldis r1, 16
+       ldil r2, arr@lo
+       ldih r2, arr@hi
+
+       call+ max
+       ; max end
+
+       ; benchepilog
+       push r0
+       call+ t_init
+       call+ t_stop
+       call+ t_valget
+       subi r0, r0, 0xc ; offset abziehen
+       pop r3
+       push r0
+       push r3
+       ; /benchepilog
+
+       call u_init ; weil r10 ueberschrieben wird
+       ldis r1, str@lo
+       ldih r1, str@hi
+       ldis r2, 19
+       call u_send_string
+
+       pop r1
+       call+ u_send_uint
+       call u_send_newline
+       pop r1
+       call+ u_send_uint
+       call u_send_newline
+
+       br+ main
+
+max:
+       ; r1 = len
+       ; r2 = arr
+       ; r4 = arr[x]
+       ; r0 = x = arr[0]
+       ldw r0, 0(r2)
+       subi r1, r1, 1
+maxloop:
+       ldw r4, 4(r2)
+       cmp r0, r4
+       movlt r0, r4
+       subi r1, r1, 1
+       addid r2, r2, 4
+       brnq+ maxloop
+       ret+