From 6ee72c288121ffa611ad75a00682bf103acea1fe Mon Sep 17 00:00:00 2001
From: David Li <li.davidm96@gmail.com>
Date: Tue, 12 Jan 2016 09:20:34 -0700
Subject: Make sure GCC uses argument to printi

---
 devkit/Makefile     |  2 +-
 devkit/cacheracer.h | 24 +++++++++++++++++++-----
 2 files changed, 20 insertions(+), 6 deletions(-)

diff --git a/devkit/Makefile b/devkit/Makefile
index 3890bc0..2a8d744 100644
--- a/devkit/Makefile
+++ b/devkit/Makefile
@@ -29,7 +29,7 @@ FLAGS = $(COMMONFLAGS) $(FLAGS_$(basename $(notdir $@)))
 
 all: $(TARGETS)
 
-$(TARGETS): bin/%: obj/%.o
+$(TARGETS): bin/%: obj/%.o cacheracer.h
 	$(CC) $(LINKFLAGS) $< -o $@
 
 $(OBJECTS): obj/%.o: %.c
diff --git a/devkit/cacheracer.h b/devkit/cacheracer.h
index 5885395..7626524 100644
--- a/devkit/cacheracer.h
+++ b/devkit/cacheracer.h
@@ -31,20 +31,33 @@ void __start(int core_id);
 #define HOME_RW ((void *) HOME_RW_START)
 #define HOME_DATA ((void *) HOME_DATA_START)
 
+/** Cache Layout
+ *
+ * Each team is given a shared direct-mapped cache with 2 blocks; each
+ * block contains 64 words (256 bytes) of memory.
+ */
+
+#define CACHE_NUM_BLOCKS 2
+
 /** Definitions of global data */
 
 #define TAUNT_SIZE 228
 
 struct player_status {
+  unsigned int cache_tags[CACHE_NUM_BLOCKS];
+  unsigned int cache_fetch_tags[CACHE_NUM_BLOCKS];
+  unsigned int cycles_left;
+  unsigned int score;
+  unsigned char payload;
+  unsigned char pad0, pad1, pad2;
   signed char taunt[TAUNT_SIZE];
-};
+} __attribute__ ((packed));
 
 /** Pointers to global structures */
 
 #define HOME_STATUS ((struct player_status*) (HOME_RW_START - sizeof(struct player_status)))
 
-__attribute__ ((unused, noinline))
-static void prints(char *fmt) {
+__attribute__ ((unused, noinline)) static void prints(char *fmt) {
   __asm__ __volatile__ (
                         "ADDI a1, %0, 0\n\t"
                         "ADDI a0, zero, 22\n\t"
@@ -55,11 +68,12 @@ static void prints(char *fmt) {
 }
 
 __attribute__ ((unused, noinline)) static void printi(int i) {
-  /* invoke system call number 22 */
   __asm__ __volatile__ (
-                        "ADDI a1, a0, 0\n\t"
+                        "ADDI a1, %0, 0\n\t"
                         "ADDI a0, zero, 23\n\t"
                         "SCALL\n\t"
+                        :
+                        : "r" (i)
                         );
 }
 
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