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2002-03-05 Greg Menke <gregory.menke@gsfc.nasa.gov>

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* startup/gdb-support.c: Added calls into the mips-support gdb stub
	for configuring the memory regions.  Any bsp that wants to use the
	gdbstub will need to do something similar.
	* startup/Makefile.am: Added shared/gdbstub directory to include path.
This commit is contained in:
Joel Sherrill
2002-03-08 16:26:03 +00:00
parent 8264d230a9
commit ffdc6591ee
3 changed files with 54 additions and 7 deletions
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7
c/src/lib/libbsp/mips/genmongoosev/ChangeLog
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@@ -1,3 +1,10 @@
2002-03-05 Greg Menke <gregory.menke@gsfc.nasa.gov>
* startup/gdb-support.c: Added calls into the mips-support gdb stub
for configuring the memory regions. Any bsp that wants to use the
gdbstub will need to do something similar.
* startup/Makefile.am: Added shared/gdbstub directory to include path.
2002-02-27 Greg Menke <gregory.menke@gsfc.nasa.gov> 2002-02-27 Greg Menke <gregory.menke@gsfc.nasa.gov>
* start/start.S: Added kseg1 test to enable cache flush code * start/start.S: Added kseg1 test to enable cache flush code

2
c/src/lib/libbsp/mips/genmongoosev/startup/Makefile.am
View File

@@ -22,6 +22,8 @@ include $(top_srcdir)/../../../../../../automake/lib.am
# (OPTIONAL) Add local stuff here using += # (OPTIONAL) Add local stuff here using +=
# #
AM_CPPFLAGS += -I @srcdir@/../../shared/gdbstub
$(PGM): $(OBJS) $(PGM): $(OBJS)
$(make-rel) $(make-rel)

52
c/src/lib/libbsp/mips/genmongoosev/startup/gdb-support.c
View File

@@ -14,6 +14,7 @@
#include <rtems.h> #include <rtems.h>
#include <rtems/bspIo.h> #include <rtems/bspIo.h>
#include <libcpu/mongoose-v.h> #include <libcpu/mongoose-v.h>
#include "gdb_if.h"
#include <rtems/libio.h> #include <rtems/libio.h>
@@ -36,13 +37,12 @@ extern void mg5uart_write_polled(int minor, char c );
extern int mg5uart_inbyte_nonblocking_polled(int minor); extern int mg5uart_inbyte_nonblocking_polled(int minor);
extern void mips_gdb_stub_install(void);
static int debugUartEnabled = 0; static int debugUartEnabled = 0;
int mg5rdbgOpenGDBuart(int breakoninit) int mg5rdbgOpenGDBuart(int breakoninit)
{ {
struct termios t; struct termios t;
@@ -61,24 +61,36 @@ int mg5rdbgOpenGDBuart(int breakoninit)
printf("gdbstub: Failed to configure UART 2 for 19200N82\n"); printf("gdbstub: Failed to configure UART 2 for 19200N82\n");
return -1; return -1;
} }
printf("gdbstub: UART 2 configured for 19200N82\n");
debugUartEnabled = -1; debugUartEnabled = -1;
/* set up vectoring for gdb */ /* set up vectoring for gdb */
mips_gdb_stub_install(); mips_gdb_stub_install(-1);
/*
this is a rough approximation of our memory map. Yours is
probably different. It only needs to be sufficient for the stub
to know what it can and can't do and where.
*/
gdbstub_add_memsegment(0 , 0x8001ffff, MEMOPT_READABLE );
gdbstub_add_memsegment(0x80020000, 0x80afffff, MEMOPT_READABLE | MEMOPT_WRITEABLE );
gdbstub_add_memsegment(0x80b00000, 0x814fffff, MEMOPT_READABLE );
gdbstub_add_memsegment(0x81500000, 0x81ffffff, MEMOPT_READABLE | MEMOPT_WRITEABLE );
printf("gdbstub: Remote GDB stub listening on UART 2 at 19200N82\n");
if( breakoninit ) if( breakoninit )
{ {
printf("gdbstub: GDB stub entered, connect host debugger now\n");
/* /*
break to gdb. We'll wait there for the operator to get their gdb break to gdb. We'll wait there for the operator to get their gdb
going, then they can 'continue' or do whatever. going, then they can 'continue' or do whatever.
*/ */
mips_break(0); mips_break(0);
printf("gdbstub: User code running\n");
} }
else
printf("gdbstub: User code running\n"); printf("gdbstub: GDB stub ready for exceptions\n");
return RTEMS_SUCCESSFUL; return RTEMS_SUCCESSFUL;
} }
@@ -113,3 +125,29 @@ void putDebugChar (char c)
return mg5uart_write_polled(1,c); return mg5uart_write_polled(1,c);
} }
/*
{
* initialize hardware pc and data breakpoints to quiet state*
unsigned32 dcic, reg, mask;
reg = 0xffffffff;
mask = 0xffffffff;
mips_set_bpcrm( reg, mask );
mips_set_bdarm( reg, mask );
mips_get_dcic( dcic );
* configure dcic for trapping, user & kernel mode, PC traps and enable it *
dcic = DCIC_TR | DCIC_UD | DCIC_KD | DCIC_PCE | DCIC_DE;
* dcic = DCIC_UD | DCIC_KD | DCIC_PCE | DCIC_DE; *
mips_set_dcic( dcic );
mips_get_bpcrm( reg, mask );
mips_get_dcic( dcic );
* printf("bpc is %08X, bpc_mask is %08X, dcic is now %08X\n", reg, mask, dcic ); *
}
*/