Now compiles without newlib. Refined the Makefile a little.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@3674 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Linus Nielsen Feltzing
parent
e96a085af8
commit
1dc42d1fcb
4 changed files with 135 additions and 15 deletions
24
gdb/Makefile
24
gdb/Makefile
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@ -6,25 +6,37 @@
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# \/ \/ \/ \/ \/
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# $Id$
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#
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ifdef RECORDER
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EXTRA = -DRECORDER
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EXT = ajz
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else
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EXT = mod
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endif
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TARGET = stub
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OBJS = start.o sh-stub.o
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OBJS = start.o sh-stub.o setjmp.o
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LIBS = -lgcc
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.s.o:
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sh-elf-as -o $@ $<
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.c.o:
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sh-elf-gcc -O -I../firmware/drivers -m1 -Wall -Wstrict-prototypes -c -o $@ $<
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sh-elf-gcc -O $(EXTRA) -I../firmware/export -I../firmware/include -m1 -Wall -Wstrict-prototypes -c -o $@ $<
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archos.mod: $(TARGET).elf
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.S.o:
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sh-elf-gcc -O -I../firmware/export -I../firmware/include -m1 -Wall -Wstrict-prototypes -c -o $@ $<
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$(TARGET).$(EXT): $(TARGET).elf
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sh-elf-objcopy -O binary $(TARGET).elf $(TARGET).out
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../tools/scramble $(TARGET).out archos.mod
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../tools/scramble $(TARGET).out $(TARGET).$(EXT)
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$(TARGET).elf: $(OBJS)
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sh-elf-gcc -nostartfiles $(OBJS) -lgcc -Wl,-Map,$(TARGET).map -o $(TARGET).elf -Tlinker.cfg
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sh-elf-gcc -nostartfiles $(OBJS) -nostdlib -Wl,-Map,$(TARGET).map -o $(TARGET).elf -Tlinker.cfg
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clean:
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rm $(OBJS) $(TARGET).map $(TARGET).elf $(TARGET).out archos.mod
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rm $(OBJS) $(TARGET).map $(TARGET).elf $(TARGET).out $(TARGET).mod $(TARGET).ajz
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start.o: start.s
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sh-stub.o: sh-stub.c
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setjmp.o: setjmp.S
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27
gdb/README
27
gdb/README
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@ -23,14 +23,23 @@ To debug using the serial port on the Jukebox, you need to do the following:
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2) Build or download a GDB SH1 cross debugger
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3) Compile the GDB stub from the CVS "gdb" archive
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For Player models, just type:
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# make
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For Recorder, type
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#make RECORDER=1
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4) Copy the newly built ARCHOS.MOD to the Jukebox.
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5) Start the Jukebox and fire up the GDB with the elf file you want to debug
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as an argument along with the baud rate:
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For Player:
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# sh-elf-gdb -b 38400 test.elf
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For Recorder:
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# sh-elf-gdb -b 115200 test.elf
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6) In GDB, type:
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(gdb) target remote /dev/ttyS0
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@ -58,13 +67,13 @@ To debug using the serial port on the Jukebox, you need to do the following:
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8) You're set. Now try to set a breakpoint and run:
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(gdb) b 22
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Breakpoint 1 at 0x90182c6: file led.c, line 14.
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(gdb) b main
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Breakpoint 1 at 0x9011b2a: file main.c, line 192.
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(gdb) c
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Continuing.
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Breakpoint 2, main () at led.c:15
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15 SSR1 &= ~(SCI_RDRF | SCI_ORER | SCI_PER | SCI_FER);
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Breakpoint 1, main () at main.c:192
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192 app_main();
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(gdb)
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Good luck!
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@ -73,8 +82,14 @@ To debug using the serial port on the Jukebox, you need to do the following:
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Technical details:
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As for now, the GDB stub occupies the memory from 0x900000 up to
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0x9018000. This will change.
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0x9018000.
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Compile and link your test program at 0x9018000 and up, and it will work.
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The baud rate is 38400, and the settings are 8N1.
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The baud rate is 38400 for Player, 115200 for Recorder, and the settings
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are 8N1.
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Note that you may have to change the ATA I/O address in the ATA_CONTROL
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macro in sh-stub.c. go to Menu->Debug (keep out)->View HW info to find out.
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Linus Nielsen Feltzing
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59
gdb/setjmp.S
Normal file
59
gdb/setjmp.S
Normal file
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@ -0,0 +1,59 @@
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/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2002 by Red Hat Inc
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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.type _setjmp,@function
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.global _setjmp
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_setjmp:
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add #(9*4),r4
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sts.l pr,@-r4
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mov.l r15,@-r4
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mov.l r14,@-r4
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mov.l r13,@-r4
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mov.l r12,@-r4
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mov.l r11,@-r4
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mov.l r10,@-r4
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mov.l r9,@-r4
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mov.l r8,@-r4
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rts
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mov #0,r0
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.type _longjmp,@function
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.global _longjmp
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_longjmp:
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mov.l @r4+,r8
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mov.l @r4+,r9
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mov.l @r4+,r10
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mov.l @r4+,r11
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mov.l @r4+,r12
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mov.l @r4+,r13
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mov.l @r4+,r14
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mov.l @r4+,r15
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lds.l @r4+,pr
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mov r5,r0
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tst r0,r0
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bf retr4
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movt r0
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retr4: rts
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nop
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@ -166,8 +166,11 @@
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#include "sh7034.h"
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#include <string.h>
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#include <setjmp.h>
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#include <signal.h>
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typedef int jmp_buf[20];
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void longjmp(jmp_buf __jmpb, int __retval);
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int setjmp(jmp_buf __jmpb);
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/* We need to undefine this from the sh7034.h file */
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#undef GBR
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@ -411,7 +414,12 @@ static char remcomOutBuffer[BUFMAX];
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#define ATA_NSECTOR (*((volatile unsigned char*)0x06100102))
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#define ATA_COMMAND (*((volatile unsigned char*)0x06100107))
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#ifdef RECORDER
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#define ATA_CONTROL (*((volatile unsigned char*)0x06200206))
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#else
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#define ATA_CONTROL (*((volatile unsigned char*)0x06200306))
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#endif
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#define ATA_ALT_STATUS ATA_CONTROL
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#define STATUS_BSY 0x80
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@ -690,6 +698,12 @@ void handle_buserror (void)
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longjmp (remcomEnv, 1);
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}
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#define SIGINT 2 /* interrupt */
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#define SIGILL 4 /* illegal instruction (not reset when caught) */
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#define SIGTRAP 5 /* trace trap (not reset when caught) */
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#define SIGEMT 7 /* EMT instruction */
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#define SIGBUS 10 /* bus error */
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/*
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* this function takes the SH-1 exception number and attempts to
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* translate this number into a unix compatible signal value
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@ -1509,8 +1523,13 @@ void init_serial (void)
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/* Set communication to be async, 8-bit data,
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no parity, 1 stop bit and use internal clock */
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SMR1 = 0;
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/* BRR1 = SYSCLOCK / (9600 * 32) - 1;*/
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#ifdef RECORDER
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#warning 115200
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BRR1 = 2; /* 115200 */
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#else
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BRR1 = 9; /* 38400 */
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#endif
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SCR1 &= ~(SCI_CKE1 | SCI_CKE0);
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@ -1575,3 +1594,18 @@ void handleError (char theSSR)
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/* Clear all error bits, otherwise the receiver will stop */
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SSR1 &= ~(SCI_ORER | SCI_PER | SCI_FER);
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}
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void *memcpy(void *dest, const void *src0, size_t n)
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{
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char *dst = (char *) dest;
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char *src = (char *) src0;
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void *save = dest;
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while(n--)
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{
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*dst++ = *src++;
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}
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return save;
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}
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