Add SYS_Report{,v}

Add SYS_EnableGecko

Author: Extrems

Makefile

@@ -144,7 +144,7 @@ OGCOBJ		:=	\
 			console_font_8x16.o timesupp.o lock_supp.o newlibc.o usbgecko.o usbmouse.o \
 			sbrk.o malloc_lock.o kprintf.o stm.o ios.o es.o isfs.o usb.o network_common.o \
 			sdgecko_io.o sdgecko_buf.o gcsd.o argv.o network_wii.o wiisd.o conf.o usbstorage.o \
-			texconv.o wiilaunch.o mic.o
+			texconv.o wiilaunch.o mic.o system_report.o
 
 #---------------------------------------------------------------------------------
 MODOBJ		:=	freqtab.o mixer.o modplay.o semitonetab.o gcmodplay.o

gc/ogc/system.h

@@ -38,6 +38,7 @@ distribution.
 
 #include <gctypes.h>
 #include <gcutil.h>
+#include <stdarg.h>
 #include <time.h>
 #include <ogc/lwp_queue.h>
 #include "gx_struct.h"
@@ -425,6 +426,10 @@ u32 SYS_GetSimulatedMem2Size(void);
 powercallback SYS_SetPowerCallback(powercallback cb);
 #endif
 
+void SYS_Report(const char *msg,...);
+void SYS_Reportv(const char *msg,va_list list);
+void SYS_EnableGecko(s32 chan,bool safe);
+
 void kprintf(const char *fmt,...);
 
 #ifdef __cplusplus

libogc/system_report.c

@@ -0,0 +1,89 @@
+/*-------------------------------------------------------------
+
+system_report.c -- Formatted output to serial port
+
+Copyright (C) 2025 Extrems' Corner.org
+
+This software is provided 'as-is', without any express or implied
+warranty.  In no event will the authors be held liable for any
+damages arising from the use of this software.
+
+Permission is granted to anyone to use this software for any
+purpose, including commercial applications, and to alter it and
+redistribute it freely, subject to the following restrictions:
+
+1.	The origin of this software must not be misrepresented; you
+must not claim that you wrote the original software. If you use
+this software in a product, an acknowledgment in the product
+documentation would be appreciated but is not required.
+
+2.	Altered source versions must be plainly marked as such, and
+must not be misrepresented as being the original software.
+
+3.	This notice may not be removed or altered from any source
+distribution.
+
+-------------------------------------------------------------*/
+
+#include <gctypes.h>
+#include <ogc/system.h>
+#include <ogc/usbgecko.h>
+#include <stdarg.h>
+#include <stdio.h>
+
+static FILE *fp = NULL;
+static s32 Chan = -1;
+static bool Safe = true;
+
+extern s32 InitializeUART(void);
+extern s32 WriteUARTN(void *buf, u32 len);
+
+static int WriteReport(void *c, const char *buf, int n)
+{
+	if (usb_isgeckoalive(Chan)) {
+		if (Safe)
+			return usb_sendbuffer_safe(Chan, buf, n);
+		else
+			return usb_sendbuffer(Chan, buf, n);
+	} else {
+		if (InitializeUART() != 0)
+			return -1;
+		if (WriteUARTN((void *)buf, n) != 0)
+			return -1;
+	}
+
+	return n;
+}
+
+static void __attribute__((constructor)) __SYS_InitReport(void)
+{
+	fp = fwopen(NULL, WriteReport);
+	setlinebuf(fp);
+}
+
+static void __attribute__((destructor)) __SYS_DeinitReport(void)
+{
+	fclose(fp);
+	fp = NULL;
+}
+
+void __attribute__((weak)) SYS_Report(const char *msg, ...)
+{
+	va_list list;
+	va_start(list, msg);
+	vfprintf(fp, msg, list);
+	va_end(list);
+}
+
+void __attribute__((weak)) SYS_Reportv(const char *msg, va_list list)
+{
+	vfprintf(fp, msg, list);
+}
+
+void SYS_EnableGecko(s32 chan, bool safe)
+{
+	flockfile(fp);
+	Chan = chan;
+	Safe = safe;
+	funlockfile(fp);
+}

libogc/usbgecko.c

@@ -16,7 +16,7 @@
 
 
 static u32 usbgecko_inited = 0;
-static lwpq_t wait_exi_queue[3];
+static lwpq_t wait_exi_queue[EXI_CHANNEL_MAX];
 
 static s32 __usbgecko_exi_unlock(s32 chan,s32 dev)
 {
@@ -161,6 +161,9 @@ int usb_isgeckoalive(s32 chn)
 	s32 ret;
 	u16 val;
 
+	if (chn < EXI_CHANNEL_0 || chn >= EXI_CHANNEL_MAX)
+		return 0;
+
 	while (EXI_ProbeEx(chn) == 0);
 
 	if (EXI_GetID(chn, EXI_DEVICE_0, &id) == 0)