Now compiles without newlib. Refined the Makefile a little.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@3674 a1c6a512-1295-4272-9138-f99709370657

gdb/Makefile

@@ -6,25 +6,37 @@
 #                     \/            \/     \/    \/            \/
 # $Id$
 #
+
+ifdef RECORDER
+EXTRA = -DRECORDER
+EXT = ajz
+else
+EXT = mod
+endif
+
 TARGET = stub
-OBJS = start.o sh-stub.o
+OBJS = start.o sh-stub.o setjmp.o
 LIBS = -lgcc
 
 .s.o:
 	sh-elf-as -o $@ $<
 
 .c.o:
-	sh-elf-gcc -O -I../firmware/drivers -m1 -Wall -Wstrict-prototypes -c -o $@ $<
+	sh-elf-gcc -O $(EXTRA) -I../firmware/export -I../firmware/include -m1 -Wall -Wstrict-prototypes -c -o $@ $<
 
-archos.mod: $(TARGET).elf
+.S.o:
+	sh-elf-gcc -O -I../firmware/export -I../firmware/include -m1 -Wall -Wstrict-prototypes -c -o $@ $<
+
+$(TARGET).$(EXT): $(TARGET).elf
 	sh-elf-objcopy -O binary $(TARGET).elf $(TARGET).out
-	../tools/scramble $(TARGET).out archos.mod
+	../tools/scramble $(TARGET).out $(TARGET).$(EXT)
 
 $(TARGET).elf: $(OBJS)
-	sh-elf-gcc -nostartfiles $(OBJS) -lgcc -Wl,-Map,$(TARGET).map -o $(TARGET).elf -Tlinker.cfg
+	sh-elf-gcc -nostartfiles $(OBJS) -nostdlib -Wl,-Map,$(TARGET).map -o $(TARGET).elf -Tlinker.cfg
 
 clean:
-	rm $(OBJS) $(TARGET).map $(TARGET).elf $(TARGET).out archos.mod
+	rm $(OBJS) $(TARGET).map $(TARGET).elf $(TARGET).out $(TARGET).mod $(TARGET).ajz
 
 start.o: start.s
 sh-stub.o: sh-stub.c
+setjmp.o: setjmp.S

gdb/README

@@ -23,14 +23,23 @@ To debug using the serial port on the Jukebox, you need to do the following:
 2) Build or download a GDB SH1 cross debugger
 
 3) Compile the GDB stub from the CVS "gdb" archive
+   For Player models, just type:
+   # make
+
+   For Recorder, type
+   #make RECORDER=1
 
 4) Copy the newly built ARCHOS.MOD to the Jukebox.
 
 5) Start the Jukebox and fire up the GDB with the elf file you want to debug
    as an argument along with the baud rate:
 
+   For Player:
    # sh-elf-gdb -b 38400 test.elf
 
+   For Recorder:
+   # sh-elf-gdb -b 115200 test.elf
+
 6) In GDB, type:
 
    (gdb) target remote /dev/ttyS0
@@ -58,13 +67,13 @@ To debug using the serial port on the Jukebox, you need to do the following:
 
 8) You're set. Now try to set a breakpoint and run:
 
-   (gdb) b 22
+   (gdb) b main
-   Breakpoint 1 at 0x90182c6: file led.c, line 14.
+   Breakpoint 1 at 0x9011b2a: file main.c, line 192.
    (gdb) c
    Continuing.
 
-   Breakpoint 2, main () at led.c:15
+   Breakpoint 1, main () at main.c:192
-   15       SSR1 &= ~(SCI_RDRF | SCI_ORER | SCI_PER | SCI_FER);
+   192         app_main();
    (gdb)
 
    Good luck!
@@ -73,8 +82,14 @@ To debug using the serial port on the Jukebox, you need to do the following:
 Technical details:
 
    As for now, the GDB stub occupies the memory from 0x900000 up to
-   0x9018000. This will change.
+   0x9018000.
 
    Compile and link your test program at 0x9018000 and up, and it will work.
 
-   The baud rate is 38400, and the settings are 8N1.
+   The baud rate is 38400 for Player, 115200 for Recorder, and the settings
+   are 8N1.
+
+   Note that you may have to change the ATA I/O address in the ATA_CONTROL
+   macro in sh-stub.c. go to Menu->Debug (keep out)->View HW info to find out.
+
+   Linus Nielsen Feltzing

gdb/setjmp.S

@@ -0,0 +1,59 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2002 by Red Hat Inc
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+        .type   _setjmp,@function
+	.global	_setjmp
+_setjmp: 
+	add	#(9*4),r4
+
+	sts.l	pr,@-r4
+
+	mov.l	r15,@-r4
+	mov.l	r14,@-r4
+	mov.l	r13,@-r4
+	mov.l	r12,@-r4
+
+	mov.l	r11,@-r4
+	mov.l	r10,@-r4
+	mov.l	r9,@-r4
+	mov.l	r8,@-r4
+
+	rts
+	mov    #0,r0
+
+        .type   _longjmp,@function
+        .global _longjmp
+_longjmp:  
+	mov.l	@r4+,r8
+	mov.l	@r4+,r9
+	mov.l	@r4+,r10
+	mov.l	@r4+,r11
+
+	mov.l	@r4+,r12
+	mov.l	@r4+,r13
+	mov.l	@r4+,r14
+	mov.l	@r4+,r15
+
+	lds.l	@r4+,pr
+
+	mov	r5,r0
+	tst	r0,r0
+	bf	retr4
+	movt	r0
+retr4:	rts
+	nop

gdb/sh-stub.c

@@ -166,8 +166,11 @@
 
 #include "sh7034.h"
 #include <string.h>
-#include <setjmp.h>
+
-#include <signal.h>
+typedef int jmp_buf[20];
+
+void longjmp(jmp_buf __jmpb, int __retval);
+int setjmp(jmp_buf __jmpb);
 
 /* We need to undefine this from the sh7034.h file */
 #undef GBR
@@ -411,7 +414,12 @@ static char remcomOutBuffer[BUFMAX];
 
 #define ATA_NSECTOR     (*((volatile unsigned char*)0x06100102))
 #define ATA_COMMAND     (*((volatile unsigned char*)0x06100107))
+
+#ifdef RECORDER
+#define ATA_CONTROL     (*((volatile unsigned char*)0x06200206))
+#else
 #define ATA_CONTROL     (*((volatile unsigned char*)0x06200306))
+#endif
 #define ATA_ALT_STATUS  ATA_CONTROL
 
 #define STATUS_BSY      0x80
@@ -690,6 +698,12 @@ void handle_buserror (void)
     longjmp (remcomEnv, 1);
 }
 
+#define	SIGINT	2	/* interrupt */
+#define	SIGILL	4	/* illegal instruction (not reset when caught) */
+#define	SIGTRAP	5	/* trace trap (not reset when caught) */
+#define	SIGEMT	7	/* EMT instruction */
+#define	SIGBUS	10	/* bus error */
+
 /*
  * this function takes the SH-1 exception number and attempts to
  * translate this number into a unix compatible signal value
@@ -1509,8 +1523,13 @@ void init_serial (void)
     /* Set communication to be async, 8-bit data,
        no parity, 1 stop bit and use internal clock */
     SMR1 = 0;
-/*    BRR1 = SYSCLOCK / (9600 * 32) - 1;*/
+
+#ifdef RECORDER
+    #warning 115200
+    BRR1 = 2; /* 115200 */
+#else
     BRR1 = 9; /* 38400 */
+#endif
 
     SCR1 &= ~(SCI_CKE1 | SCI_CKE0);
 
@@ -1575,3 +1594,18 @@ void handleError (char theSSR)
     /* Clear all error bits, otherwise the receiver will stop */
     SSR1 &= ~(SCI_ORER | SCI_PER | SCI_FER);
 }
+
+void *memcpy(void *dest, const void *src0, size_t n)
+{
+    char *dst = (char *) dest;
+    char *src = (char *) src0;
+    
+    void *save = dest;
+    
+    while(n--)
+    {
+        *dst++ = *src++;
+    }
+    
+    return save;
+}