From 794ae593151a24ae5d4eeb8e3105918d8ffa0551 Mon Sep 17 00:00:00 2001
From: Derek Hensley <hensley.derek58@gmail.com>
Date: Sat, 29 Aug 2026 15:19:33 -0700
Subject: [PATCH] [n64-jp-1.1] libu64/rcp_utils (#1877)

---
 src/boot/libu64/rcp_utils.c | 53 ++++++++++++++++++++++++++++++++-----
 1 file changed, 47 insertions(+), 6 deletions(-)

diff --git a/src/boot/libu64/rcp_utils.c b/src/boot/libu64/rcp_utils.c
index f587fad21e..9b875dfa99 100644
--- a/src/boot/libu64/rcp_utils.c
+++ b/src/boot/libu64/rcp_utils.c
@@ -1,16 +1,57 @@
 #include "ultra64.h"
+#include "macros.h"
+
+#if MM_VERSION < N64_US || DEBUG_FEATURES
+#define RCP_UTILS_PRINTF osSyncPrintf
+#elif IDO_PRINTF_WORKAROUND
+#define RCP_UTILS_PRINTF(args) (void)0
+#else
+#define RCP_UTILS_PRINTF(format, ...) (void)0
+#endif
+
+#define printSpStatus(x, name) \
+    if (x & SP_STATUS_##name)  \
+    RCP_UTILS_PRINTF(#name " ")
+
+#define printDpStatus(x, name) \
+    if (x & DPC_STATUS_##name) \
+    RCP_UTILS_PRINTF(#name " ")
 
 void RcpUtils_PrintRegisterStatus(void) {
     u32 spStatus = __osSpGetStatus();
     u32 dpStatus = osDpGetStatus();
 
-    if (spStatus) {
-        // stubbed debug prints
-    }
+    RCP_UTILS_PRINTF("osSpGetStatus=%08x: ", spStatus);
+    printSpStatus(spStatus, HALT);
+    printSpStatus(spStatus, BROKE);
+    printSpStatus(spStatus, DMA_BUSY);
+    printSpStatus(spStatus, DMA_FULL);
+    printSpStatus(spStatus, IO_FULL);
+    printSpStatus(spStatus, SSTEP);
+    printSpStatus(spStatus, INTR_BREAK);
+    printSpStatus(spStatus, YIELD);
+    printSpStatus(spStatus, YIELDED);
+    printSpStatus(spStatus, TASKDONE);
+    printSpStatus(spStatus, SIG3);
+    printSpStatus(spStatus, SIG4);
+    printSpStatus(spStatus, SIG5);
+    printSpStatus(spStatus, SIG6);
+    printSpStatus(spStatus, SIG7);
+    RCP_UTILS_PRINTF("\n");
 
-    if (dpStatus) {
-        // stubbed debug prints
-    }
+    RCP_UTILS_PRINTF("osDpGetStatus=%08x:", dpStatus);
+    printDpStatus(dpStatus, XBUS_DMEM_DMA);
+    printDpStatus(dpStatus, FREEZE);
+    printDpStatus(dpStatus, FLUSH);
+    printDpStatus(dpStatus, START_GCLK);
+    printDpStatus(dpStatus, TMEM_BUSY);
+    printDpStatus(dpStatus, PIPE_BUSY);
+    printDpStatus(dpStatus, CMD_BUSY);
+    printDpStatus(dpStatus, CBUF_READY);
+    printDpStatus(dpStatus, DMA_BUSY);
+    printDpStatus(dpStatus, END_VALID);
+    printDpStatus(dpStatus, START_VALID);
+    RCP_UTILS_PRINTF("\n");
 }
 
 void RcpUtils_Reset(void) {