Add support for crash screen asserts

lib/n64-libc/n64-alloca.c

@@ -1,9 +0,0 @@
-#include "n64-assert.h"
-
-#include "n64-stdlib.h"
-#include "n64-stdio.h"
-
-void __n64_assert_fail( const char *assertion, const char *file, unsigned int line, const char *fcn ) {
-	n64_printf( "%s:%u: %s: Assertion `%s' failed.\n", file, line, fcn, assertion );
-	n64_abort();
-}

lib/n64-libc/n64-assert.c

@@ -3,7 +3,12 @@
 #include "n64-stdlib.h"
 #include "n64-stdio.h"
 
+extern char *assertMsg;
+char assertBuf[256];
+
 void __n64_assert_fail( const char *assertion, const char *file, unsigned int line, const char *fcn ) {
+  n64_snprintf( assertBuf, 256, "%s:%u:%s: Assertion `%s' failed.", file, line, fcn, assertion );
+  assertMsg = &assertBuf[0];
 	n64_printf( "%s:%u: %s: Assertion `%s' failed.\n", file, line, fcn, assertion );
 	n64_abort();
 }

sm64.ld

@@ -9,6 +9,8 @@ OUTPUT_ARCH (mips)
 #include "config.h"
 #include "ld.h"
 
+EXTERN(assertMsg);
+
 SECTIONS
 {
     __romPos = 0;
@@ -52,7 +54,7 @@ SECTIONS
         AUDIO_DIR*.o(.text);
         ULTRA_BUILD_DIR/libgultra_rom.a:*.o(.text);
         BUILD_DIR/src/audio/external.o(.text);
-        BUILD_DIR/n64-libc.a:*.o(.text);
+        BUILD_DIR/n64-libc.a:*.o(.text*);
         BUILD_DIR/libpl2.a:*.o(.text);
         BUILD_DIR/lib/rsp.o(.text);
 

src/init/crash_screen.c

@@ -6,7 +6,7 @@
 
 #include "PR/os_internal.h"
 #include "lib/hackerlibultra/src/libc/xstdio.h"
-#include "n64-stdio.h"
+#include "n64-libc.h"
 
 #include "audio/external.h"
 #include "sounds.h"
@@ -14,6 +14,8 @@
 
 extern u32 gGlobalTimer;
 
+char *assertMsg = NULL;
+
 u8 gCrashScreenCharToGlyph[128] = {
     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 41, -1, -1, -1, 43, -1, -1, 37, 38, -1, 42,
@@ -149,6 +151,11 @@ void crash_screen_print(s32 x, s32 y, const char *fmt, ...) {
 
             ptr++;
             x += 6;
+
+            if (x >= 285) {
+                x = 30;
+                y += 10;
+            }
         }
     }
 
@@ -292,6 +299,10 @@ void draw_crash_screen(OSThread *thread) {
     n64_printf("==============================================\n");
     osViBlack(FALSE);
     crash_screen_sleep(2500);
+    if (assertMsg != NULL) {
+        crash_screen_draw_rect(25, 45, 270, 185);
+        crash_screen_print(30, 50, assertMsg);
+    }
     play_music(SEQ_PLAYER_LEVEL, SEQ_LEVEL_BOSS_KOOPA, 0);
 }