d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Introduce the GDB debugger backend for the new KDB framework. The

Browse Source 
backend improves over the old GDB support in the following ways:
o  Unified implementation with minimal MD code.
o  A simple interface for devices to register themselves as debug
   ports, ala consoles.
o  Compression by using run-length encoding.
o  Implements GDB threading support.
This commit is contained in:
marcel 2004-07-10 17:47:22 +00:00
parent 1ff7195057
commit 6e0dcca8a9
14 changed files with 1515 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

101
sys/alpha/alpha/gdb_machdep.c Normal file
View File

@ -0,0 +1,101 @@
/*
* Copyright (c) 2004 Marcel Moolenaar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kdb.h>
#include <sys/kernel.h>
#include <sys/signal.h>
#include <machine/gdb_machdep.h>
#include <machine/pcb.h>
#include <machine/reg.h>
#include <gdb/gdb.h>
void *
gdb_cpu_getreg(int regnum, size_t *regsz)
{
*regsz = gdb_cpu_regsz(regnum);
switch (regnum) {
case 9: return (&kdb_thrctx->pcb_context[0]);
case 10: return (&kdb_thrctx->pcb_context[1]);
case 11: return (&kdb_thrctx->pcb_context[2]);
case 12: return (&kdb_thrctx->pcb_context[3]);
case 13: return (&kdb_thrctx->pcb_context[4]);
case 14: return (&kdb_thrctx->pcb_context[5]);
case 15: return (&kdb_thrctx->pcb_context[6]);
case 30: return (&kdb_thrctx->pcb_hw.apcb_ksp);
case 64: return (&kdb_thrctx->pcb_context[7]);
}
return (NULL);
}
void
gdb_cpu_setreg(int regnum, register_t val)
{
switch (regnum) {
}
}
int
gdb_cpu_signal(int entry, int code)
{
switch (entry) {
case ALPHA_KENTRY_INT:
case ALPHA_KENTRY_ARITH:
return (SIGILL); /* Can this happen? */
case ALPHA_KENTRY_MM:
switch (code) {
case ALPHA_MMCSR_INVALTRANS:
return (SIGSEGV);
case ALPHA_MMCSR_ACCESS:
case ALPHA_MMCSR_FOR:
case ALPHA_MMCSR_FOE:
case ALPHA_MMCSR_FOW:
return (SIGBUS);
}
case ALPHA_KENTRY_IF:
switch (code) {
case ALPHA_IF_CODE_BUGCHK:
case ALPHA_IF_CODE_BPT:
return (SIGTRAP);
case ALPHA_IF_CODE_GENTRAP:
case ALPHA_IF_CODE_FEN:
case ALPHA_IF_CODE_OPDEC:
return (SIGILL);
}
case ALPHA_KENTRY_UNA:
return (SIGSEGV);
case ALPHA_KENTRY_SYS:
return (SIGILL);
}
return (SIGILL);
}

52
sys/alpha/include/gdb_machdep.h Normal file
View File

@ -0,0 +1,52 @@
/*
* Copyright (c) 2004 Marcel Moolenaar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _MACHINE_GDB_MACHDEP_H_
#define _MACHINE_GDB_MACHDEP_H_
#define GDB_BUFSZ 600
#define GDB_NREGS 67
#define GDB_REG_PC 64
static __inline size_t
gdb_cpu_regsz(int regnum)
{
return (sizeof(long));
}
static __inline int
gdb_cpu_query(void)
{
return (0);
}
void *gdb_cpu_getreg(int, size_t *);
void gdb_cpu_setreg(int, register_t);
int gdb_cpu_signal(int, int);
#endif /* !_MACHINE_GDB_MACHDEP_H_ */

84
sys/amd64/amd64/gdb_machdep.c Normal file
View File

@ -0,0 +1,84 @@
/*
* Copyright (c) 2004 Marcel Moolenaar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kdb.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/signal.h>
#include <machine/frame.h>
#include <machine/gdb_machdep.h>
#include <machine/psl.h>
#include <machine/reg.h>
#include <machine/trap.h>
#include <gdb/gdb.h>
void *
gdb_cpu_getreg(int regnum, size_t *regsz)
{
struct trapframe *tf = kdb_frame;
*regsz = gdb_cpu_regsz(regnum);
switch (regnum) {
case 0: return (&tf->tf_rax);
case 1: return (&tf->tf_rbx);
case 2: return (&tf->tf_rcx);
case 3: return (&tf->tf_rdx);
case 4: return (&tf->tf_rsi);
case 5: return (&tf->tf_rdi);
case 6: return (&tf->tf_rbp);
case 7: return (&tf->tf_rsp);
case 8: return (&tf->tf_r8);
case 9: return (&tf->tf_r9);
case 10: return (&tf->tf_r10);
case 11: return (&tf->tf_r11);
case 12: return (&tf->tf_r12);
case 13: return (&tf->tf_r13);
case 14: return (&tf->tf_r14);
case 15: return (&tf->tf_r15);
case 16: return (&tf->tf_rip);
case 17: return (&tf->tf_rflags);
case 18: return (&tf->tf_cs);
case 19: return (&tf->tf_ss);
}
return (NULL);
}
void
gdb_cpu_setreg(int regnum, register_t val)
{
struct trapframe *tf = kdb_frame;
switch (regnum) {
case GDB_REG_PC: tf->tf_rip = val; break;
}
}

57
sys/amd64/include/gdb_machdep.h Normal file
View File

@ -0,0 +1,57 @@
/*
* Copyright (c) 2004 Marcel Moolenaar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _MACHINE_GDB_MACHDEP_H_
#define _MACHINE_GDB_MACHDEP_H_
#define GDB_BUFSZ 500
#define GDB_NREGS 56
#define GDB_REG_PC 18
static __inline size_t
gdb_cpu_regsz(int regnum)
{
return ((regnum > 16 && regnum < 24) ? 4 : 8);
}
static __inline int
gdb_cpu_signal(int type, int code __unused)
{
return (type);
}
static __inline int
gdb_cpu_query(void)
{
return (0);
}
void *gdb_cpu_getreg(int, size_t *);
void gdb_cpu_setreg(int, register_t);
#endif /* !_MACHINE_GDB_MACHDEP_H_ */

62
sys/gdb/gdb.h Normal file
View File

@ -0,0 +1,62 @@
/*
* Copyright (c) 2004 Marcel Moolenaar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _GDB_GDB_H_
#define _GDB_GDB_H_
typedef int gdb_checkc_f(void);
typedef int gdb_getc_f(void);
typedef void gdb_init_f(void);
typedef int gdb_probe_f(void);
typedef void gdb_putc_f(int);
typedef void gdb_term_f(void);
struct gdb_dbgport {
const char *gdb_name;
gdb_checkc_f *gdb_checkc;
gdb_getc_f *gdb_getc;
gdb_init_f *gdb_init;
gdb_probe_f *gdb_probe;
gdb_putc_f *gdb_putc;
gdb_term_f *gdb_term;
int gdb_active;
};
#define GDB_DBGPORT(name, probe, init, term, checkc, getc, putc) \
static struct gdb_dbgport name##_gdb_dbgport = { \
.gdb_name = #name, \
.gdb_checkc = checkc, \
.gdb_getc = getc, \
.gdb_init = init, \
.gdb_probe = probe, \
.gdb_putc = putc, \
.gdb_term = term \
}; \
DATA_SET(gdb_dbgport_set, name##_gdb_dbgport)
#endif /* !_GDB_GDB_H_ */

109
sys/gdb/gdb_int.h Normal file
View File

@ -0,0 +1,109 @@
/*
* Copyright (c) 2004 Marcel Moolenaar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _GDB_GDB_INT_H_
#define _GDB_GDB_INT_H_
extern struct gdb_dbgport *gdb_cur;
extern char *gdb_rxp;
extern size_t gdb_rxsz;
extern char *gdb_txp;
int gdb_rx_begin(void);
int gdb_rx_equal(const char *);
int gdb_rx_mem(unsigned char *, size_t);
int gdb_rx_varhex(uintmax_t *);
static __inline int
gdb_rx_char(void)
{
int c;
if (gdb_rxsz > 0) {
c = *gdb_rxp++;
gdb_rxsz--;
} else
c = -1;
return (c);
}
void gdb_tx_begin(char);
int gdb_tx_end(void);
int gdb_tx_mem(const unsigned char *, size_t);
void gdb_tx_reg(int);
static __inline void
gdb_tx_char(char c)
{
*gdb_txp++ = c;
}
static __inline int
gdb_tx_empty(void)
{
gdb_tx_begin('\0');
return (gdb_tx_end());
}
static __inline void
gdb_tx_hex(uintmax_t n, int sz)
{
gdb_txp += sprintf(gdb_txp, "%0*jx", sz, n);
}
static __inline int
gdb_tx_err(int err)
{
gdb_tx_begin('E');
gdb_tx_hex(err, 2);
return (gdb_tx_end());
}
static __inline int
gdb_tx_ok(void)
{
gdb_tx_begin('O');
gdb_tx_char('K');
return (gdb_tx_end());
}
static __inline void
gdb_tx_str(const char *s)
{
while (*s)
*gdb_txp++ = *s++;
}
static __inline void
gdb_tx_varhex(uintmax_t n)
{
gdb_txp += sprintf(gdb_txp, "%jx", n);
}
#endif /* !_GDB_GDB_INT_H_ */

261
sys/gdb/gdb_main.c Normal file
View File

@ -0,0 +1,261 @@
/*
* Copyright (c) 2004 Marcel Moolenaar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kdb.h>
#include <sys/kernel.h>
#include <sys/pcpu.h>
#include <sys/proc.h>
#include <sys/reboot.h>
#include <machine/gdb_machdep.h>
#include <machine/kdb.h>
#include <gdb/gdb.h>
#include <gdb/gdb_int.h>
static dbbe_init_f gdb_init;
static dbbe_trap_f gdb_trap;
KDB_BACKEND(gdb, gdb_init, NULL, gdb_trap);
GDB_DBGPORT(null, NULL, NULL, NULL, NULL, NULL, NULL);
SET_DECLARE(gdb_dbgport_set, struct gdb_dbgport);
struct gdb_dbgport *gdb_cur = NULL;
static int
gdb_init(void)
{
struct gdb_dbgport *dp, **iter;
int cur_pri, pri;
gdb_cur = NULL;
cur_pri = -1;
SET_FOREACH(iter, gdb_dbgport_set) {
dp = *iter;
pri = (dp->gdb_probe != NULL) ? dp->gdb_probe() : -1;
dp->gdb_active = (pri >= 0) ? 0 : -1;
if (pri > cur_pri) {
cur_pri = pri;
gdb_cur = dp;
}
}
if (gdb_cur != NULL) {
printf("GDB: debug ports:");
SET_FOREACH(iter, gdb_dbgport_set) {
dp = *iter;
if (dp->gdb_active == 0)
printf(" %s", dp->gdb_name);
}
printf("\n");
} else
printf("GDB: no debug ports present\n");
if (gdb_cur != NULL) {
gdb_cur->gdb_init();
printf("GDB: current port: %s\n", gdb_cur->gdb_name);
}
if (gdb_cur != NULL)
cur_pri = (boothowto & RB_GDB) ? 2 : 0;
else
cur_pri = -1;
return (cur_pri);
}
static int
gdb_trap(int type, int code)
{
struct thread *thr_iter;
/*
* Send a T packet. We currently do not support watchpoints (the
* awatch, rwatch or watch elements).
*/
gdb_tx_begin('T');
gdb_tx_hex(gdb_cpu_signal(type, code), 2);
gdb_tx_varhex(GDB_REG_PC);
gdb_tx_char(':');
gdb_tx_reg(GDB_REG_PC);
gdb_tx_char(';');
gdb_tx_str("thread:");
gdb_tx_varhex((long)kdb_thread->td_tid);
gdb_tx_char(';');
gdb_tx_end(); /* XXX check error condition. */
thr_iter = NULL;
while (gdb_rx_begin() == 0) {
printf("GDB: got '%s'\n", gdb_rxp);
switch (gdb_rx_char()) {
case '?': /* Last signal. */
gdb_tx_begin('S');
gdb_tx_hex(gdb_cpu_signal(type, code), 2);
gdb_tx_end();
break;
case 'c': { /* Continue. */
uintmax_t addr;
if (!gdb_rx_varhex(&addr))
gdb_cpu_setreg(GDB_REG_PC, addr);
kdb_cpu_clear_singlestep();
return (1);
}
case 'C': { /* Continue with signal. */
uintmax_t addr, sig;
if (!gdb_rx_varhex(&sig) && gdb_rx_char() == ';' &&
!gdb_rx_varhex(&addr))
gdb_cpu_setreg(GDB_REG_PC, addr);
kdb_cpu_clear_singlestep();
return (1);
}
case 'g': { /* Read registers. */
size_t r;
gdb_tx_begin(0);
for (r = 0; r < GDB_NREGS; r++)
gdb_tx_reg(r);
gdb_tx_end();
break;
}
case 'G': /* Write registers. */
gdb_tx_err(0);
break;
case 'H': { /* Set thread. */
intmax_t tid;
struct thread *thr;
gdb_rx_char();
gdb_rx_varhex(&tid);
if (tid > 0) {
thr = kdb_thr_lookup(tid);
if (thr == NULL) {
gdb_tx_err(ENOENT);
break;
}
kdb_thr_select(thr);
}
gdb_tx_ok();
break;
}
case 'k': /* Kill request. */
kdb_cpu_clear_singlestep();
return (1);
case 'm': { /* Read memory. */
uintmax_t addr, size;
if (gdb_rx_varhex(&addr) || gdb_rx_char() != ',' ||
gdb_rx_varhex(&size)) {
gdb_tx_err(EINVAL);
break;
}
gdb_tx_begin(0);
if (gdb_tx_mem((char *)(uintptr_t)addr, size))
gdb_tx_end();
else
gdb_tx_err(EIO);
break;
}
case 'M': { /* Write memory. */
uintmax_t addr, size;
if (gdb_rx_varhex(&addr) || gdb_rx_char() != ',' ||
gdb_rx_varhex(&size) || gdb_rx_char() != ':') {
gdb_tx_err(EINVAL);
break;
}
if (gdb_rx_mem((char *)(uintptr_t)addr, size) == 0)
gdb_tx_err(EIO);
else
gdb_tx_ok();
break;
}
case 'P': { /* Write register. */
uintmax_t reg, val;
if (gdb_rx_varhex(&reg) || gdb_rx_char() != '=' ||
gdb_rx_varhex(&val)) {
gdb_tx_err(EINVAL);
break;
}
gdb_cpu_setreg(reg, val);
gdb_tx_ok();
break;
}
case 'q': /* General query. */
if (gdb_rx_equal("fThreadInfo")) {
thr_iter = kdb_thr_first();
gdb_tx_begin('m');
gdb_tx_hex((long)thr_iter->td_tid, 8);
gdb_tx_end();
} else if (gdb_rx_equal("sThreadInfo")) {
if (thr_iter == NULL) {
gdb_tx_err(ENXIO);
break;
}
thr_iter = kdb_thr_next(thr_iter);
if (thr_iter != NULL) {
gdb_tx_begin('m');
gdb_tx_hex((long)thr_iter->td_tid, 8);
gdb_tx_end();
} else {
gdb_tx_begin('l');
gdb_tx_end();
}
} else if (!gdb_cpu_query())
gdb_tx_empty();
break;
case 's': { /* Step. */
uintmax_t addr;
if (!gdb_rx_varhex(&addr))
gdb_cpu_setreg(GDB_REG_PC, addr);
kdb_cpu_set_singlestep();
return (1);
}
case 'S': { /* Step with signal. */
uintmax_t addr, sig;
if (!gdb_rx_varhex(&sig) && gdb_rx_char() == ';' &&
!gdb_rx_varhex(&addr))
gdb_cpu_setreg(GDB_REG_PC, addr);
kdb_cpu_set_singlestep();
return (1);
}
case 'T': { /* Thread alive. */
intmax_t tid;
gdb_rx_varhex(&tid);
if (kdb_thr_lookup(tid) != NULL)
gdb_tx_ok();
else
gdb_tx_err(ENOENT);
break;
}
case -1:
/* Empty command. Treat as unknown command. */
/* FALLTHROUGH */
default:
/* Unknown command. Send empty response. */
gdb_tx_empty();
break;
}
}
return (0);
}

289
sys/gdb/gdb_packet.c Normal file
View File

@ -0,0 +1,289 @@
/*
* Copyright (c) 2004 Marcel Moolenaar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/ctype.h>
#include <sys/kdb.h>
#include <machine/gdb_machdep.h>
#include <gdb/gdb.h>
#include <gdb/gdb_int.h>
static char gdb_rxbuf[GDB_BUFSZ];
char *gdb_rxp = NULL;
size_t gdb_rxsz = 0;
static char gdb_txbuf[GDB_BUFSZ];
char *gdb_txp = NULL; /* Used in inline functions. */
#define C2N(c) (((c) < 'A') ? (c) - '0' : \
10 + (((c) < 'a') ? (c) - 'A' : (c) - 'a'))
#define N2C(n) (((n) < 10) ? (n) + '0' : (n) + 'a' - 10)
/*
* Functions to receive and extract from a packet.
*/
int
gdb_rx_begin(void)
{
int c, cksum;
gdb_rxp = NULL;
do {
/*
* Wait for the start character, ignore all others.
* XXX needs a timeout.
*/
while ((c = gdb_cur->gdb_getc()) != '$')
;
/* Read until a # or end of buffer is found. */
cksum = 0;
gdb_rxsz = 0;
while (gdb_rxsz < sizeof(gdb_rxbuf) - 1) {
c = gdb_cur->gdb_getc();
if (c == '#')
break;
gdb_rxbuf[gdb_rxsz++] = c;
cksum += c;
}
gdb_rxbuf[gdb_rxsz] = 0;
cksum &= 0xff;
/* Bail out on a buffer overflow. */
if (c != '#') {
gdb_cur->gdb_putc('-');
return (ENOSPC);
}
c = gdb_cur->gdb_getc();
cksum -= (C2N(c) << 4) & 0xf0;
c = gdb_cur->gdb_getc();
cksum -= C2N(c) & 0x0f;
gdb_cur->gdb_putc((cksum == 0) ? '+' : '-');
if (cksum != 0)
printf("GDB: packet `%s' has invalid checksum\n",
gdb_rxbuf);
} while (cksum != 0);
gdb_rxp = gdb_rxbuf;
return (0);
}
int
gdb_rx_equal(const char *str)
{
int len;
len = strlen(str);
if (len > gdb_rxsz || strncmp(str, gdb_rxp, len) != 0)
return (0);
gdb_rxp += len;
gdb_rxsz -= len;
return (1);
}
int
gdb_rx_mem(unsigned char *addr, size_t size)
{
void *prev;
jmp_buf jb;
int ret;
unsigned char c;
if (size * 2 != gdb_rxsz)
return (-1);
prev = kdb_jmpbuf(jb);
ret = setjmp(jb);
if (ret == 0) {
while (size-- > 0) {
c = (C2N(gdb_rxp[0]) << 4) & 0xf0;
c |= C2N(gdb_rxp[1]) & 0x0f;
*addr++ = c;
gdb_rxsz -= 2;
gdb_rxp += 2;
}
}
(void)kdb_jmpbuf(prev);
return ((ret == 0) ? 1 : 0);
}
int
gdb_rx_varhex(uintmax_t *vp)
{
uintmax_t v;
int c, neg;
c = gdb_rx_char();
neg = (c == '-') ? 1 : 0;
if (neg == 1)
c = gdb_rx_char();
if (!isxdigit(c)) {
gdb_rxp -= ((c == -1) ? 0 : 1) + neg;
gdb_rxsz += ((c == -1) ? 0 : 1) + neg;
return (-1);
}
v = 0;
do {
v <<= 4;
v += C2N(c);
c = gdb_rx_char();
} while (isxdigit(c));
if (c != -1) {
gdb_rxp--;
gdb_rxsz++;
}
*vp = (neg) ? -v : v;
return (0);
}
/*
* Function to build and send a package.
*/
void
gdb_tx_begin(char tp)
{
gdb_txp = gdb_txbuf;
if (tp != '\0')
gdb_tx_char(tp);
}
int
gdb_tx_end(void)
{
const char *p;
int runlen;
unsigned char c, cksum;
do {
gdb_cur->gdb_putc('$');
cksum = 0;
p = gdb_txbuf;
while (p < gdb_txp) {
/* Send a character and start run-length encoding. */
c = *p++;
gdb_cur->gdb_putc(c);
cksum += c;
runlen = 0;
/* Determine run-length and update checksum. */
while (p < gdb_txp && *p == c) {
runlen++;
p++;
}
/* Emit the run-length encoded string. */
while (runlen >= 97) {
gdb_cur->gdb_putc('*');
cksum += '*';
gdb_cur->gdb_putc(97+29);
cksum += 97+29;
runlen -= 97;
if (runlen > 0) {
gdb_cur->gdb_putc(c);
cksum += c;
runlen--;
}
}
if (runlen == 1) {
gdb_cur->gdb_putc(c);
cksum += c;
runlen--;
}
if (runlen == 0)
continue;
/* Don't emit '$', '#', '+' or '-'. */
if (runlen == 7) {
gdb_cur->gdb_putc(c);
cksum += c;
runlen--;
}
if (runlen == 6 || runlen == 14 || runlen == 16) {
gdb_cur->gdb_putc(c);
cksum += c;
runlen--;
}
gdb_cur->gdb_putc('*');
cksum += '*';
gdb_cur->gdb_putc(runlen+29);
cksum += runlen+29;
}
gdb_cur->gdb_putc('#');
c = cksum >> 4;
gdb_cur->gdb_putc(N2C(c));
c = cksum & 0x0f;
gdb_cur->gdb_putc(N2C(c));
c = gdb_cur->gdb_getc();
} while (c != '+');
return (0);
}
int
gdb_tx_mem(const unsigned char *addr, size_t size)
{
void *prev;
jmp_buf jb;
int ret;
prev = kdb_jmpbuf(jb);
ret = setjmp(jb);
if (ret == 0) {
while (size-- > 0) {
*gdb_txp++ = N2C(*addr >> 4);
*gdb_txp++ = N2C(*addr & 0x0f);
addr++;
}
}
(void)kdb_jmpbuf(prev);
return ((ret == 0) ? 1 : 0);
}
void
gdb_tx_reg(int regnum)
{
unsigned char *regp;
size_t regsz;
regp = gdb_cpu_getreg(regnum, &regsz);
if (regp == NULL) {
/* Register unavailable. */
while (regsz--) {
gdb_tx_char('x');
gdb_tx_char('x');
}
} else
gdb_tx_mem(regp, regsz);
}

90
sys/i386/i386/gdb_machdep.c Normal file
View File

@ -0,0 +1,90 @@
/*
* Copyright (c) 2004 Marcel Moolenaar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kdb.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/signal.h>
#include <machine/gdb_machdep.h>
#include <machine/pcb.h>
#include <machine/trap.h>
#include <gdb/gdb.h>
void *
gdb_cpu_getreg(int regnum, size_t *regsz)
{
*regsz = gdb_cpu_regsz(regnum);
switch (regnum) {
case 3: return (&kdb_thrctx->pcb_ebx);
case 4: return (&kdb_thrctx->pcb_esp);
case 5: return (&kdb_thrctx->pcb_ebp);
case 6: return (&kdb_thrctx->pcb_esi);
case 7: return (&kdb_thrctx->pcb_edi);
case 8: return (&kdb_thrctx->pcb_eip);
}
return (NULL);
}
void
gdb_cpu_setreg(int regnum, register_t val)
{
switch (regnum) {
case GDB_REG_PC: kdb_thrctx->pcb_eip = val; break;
}
}
int
gdb_cpu_signal(int type, int code)
{
switch (type & ~T_USER) {
case 0: return (SIGFPE); /* Divide by zero. */
case 1: return (SIGTRAP); /* Debug exception. */
case 3: return (SIGTRAP); /* Breakpoint. */
case 4: return (SIGURG); /* into instr. (overflow). */
case 5: return (SIGURG); /* bound instruction. */
case 6: return (SIGILL); /* Invalid opcode. */
case 7: return (SIGFPE); /* Coprocessor not present. */
case 8: return (SIGEMT); /* Double fault. */
case 9: return (SIGSEGV); /* Coprocessor segment overrun. */
case 10: return (SIGTRAP); /* Invalid TSS (also single-step). */
case 11: return (SIGSEGV); /* Segment not present. */
case 12: return (SIGSEGV); /* Stack exception. */
case 13: return (SIGSEGV); /* General protection. */
case 14: return (SIGSEGV); /* Page fault. */
case 16: return (SIGEMT); /* Coprocessor error. */
}
return (SIGEMT);
}

52
sys/i386/include/gdb_machdep.h Normal file
View File

@ -0,0 +1,52 @@
/*
* Copyright (c) 2004 Marcel Moolenaar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _MACHINE_GDB_MACHDEP_H_
#define _MACHINE_GDB_MACHDEP_H_
#define GDB_BUFSZ 400
#define GDB_NREGS 14
#define GDB_REG_PC 8
static __inline size_t
gdb_cpu_regsz(int regnum __unused)
{
return (sizeof(int));
}
static __inline int
gdb_cpu_query(void)
{
return (0);
}
void *gdb_cpu_getreg(int, size_t *);
void gdb_cpu_setreg(int, register_t);
int gdb_cpu_signal(int, int);
#endif /* !_MACHINE_GDB_MACHDEP_H_ */

177
sys/ia64/ia64/gdb_machdep.c Normal file
View File

@ -0,0 +1,177 @@
/*
* Copyright (c) 2004 Marcel Moolenaar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kdb.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/signal.h>
#include <machine/gdb_machdep.h>
#include <machine/md_var.h>
#include <machine/pcb.h>
#include <machine/reg.h>
#include <gdb/gdb.h>
#include <gdb/gdb_int.h>
void *
gdb_cpu_getreg(int regnum, size_t *regsz)
{
static uint64_t synth;
uint64_t cfm;
*regsz = gdb_cpu_regsz(regnum);
switch (regnum) {
/* Registers 0-127: general registers. */
case 1: return (&kdb_thrctx->pcb_special.gp);
case 4: return (&kdb_thrctx->pcb_preserved.gr4);
case 5: return (&kdb_thrctx->pcb_preserved.gr5);
case 6: return (&kdb_thrctx->pcb_preserved.gr6);
case 7: return (&kdb_thrctx->pcb_preserved.gr7);
case 12: return (&kdb_thrctx->pcb_special.sp);
case 13: return (&kdb_thrctx->pcb_special.tp);
/* Registers 128-255: floating-point registers. */
case 130: return (&kdb_thrctx->pcb_preserved_fp.fr2);
case 131: return (&kdb_thrctx->pcb_preserved_fp.fr3);
case 132: return (&kdb_thrctx->pcb_preserved_fp.fr4);
case 133: return (&kdb_thrctx->pcb_preserved_fp.fr5);
case 144: return (&kdb_thrctx->pcb_preserved_fp.fr16);
case 145: return (&kdb_thrctx->pcb_preserved_fp.fr17);
case 146: return (&kdb_thrctx->pcb_preserved_fp.fr18);
case 147: return (&kdb_thrctx->pcb_preserved_fp.fr19);
case 148: return (&kdb_thrctx->pcb_preserved_fp.fr20);
case 149: return (&kdb_thrctx->pcb_preserved_fp.fr21);
case 150: return (&kdb_thrctx->pcb_preserved_fp.fr22);
case 151: return (&kdb_thrctx->pcb_preserved_fp.fr23);
case 152: return (&kdb_thrctx->pcb_preserved_fp.fr24);
case 153: return (&kdb_thrctx->pcb_preserved_fp.fr25);
case 154: return (&kdb_thrctx->pcb_preserved_fp.fr26);
case 155: return (&kdb_thrctx->pcb_preserved_fp.fr27);
case 156: return (&kdb_thrctx->pcb_preserved_fp.fr28);
case 157: return (&kdb_thrctx->pcb_preserved_fp.fr29);
case 158: return (&kdb_thrctx->pcb_preserved_fp.fr30);
case 159: return (&kdb_thrctx->pcb_preserved_fp.fr31);
/* Registers 320-327: branch registers. */
case 320:
if (kdb_thrctx->pcb_special.__spare == ~0UL)
return (&kdb_thrctx->pcb_special.rp);
break;
case 321: return (&kdb_thrctx->pcb_preserved.br1);
case 322: return (&kdb_thrctx->pcb_preserved.br2);
case 323: return (&kdb_thrctx->pcb_preserved.br3);
case 324: return (&kdb_thrctx->pcb_preserved.br4);
case 325: return (&kdb_thrctx->pcb_preserved.br5);
/* Registers 328-333: misc. other registers. */
case 330: return (&kdb_thrctx->pcb_special.pr);
case 331:
if (kdb_thrctx->pcb_special.__spare == ~0UL) {
synth = kdb_thrctx->pcb_special.iip;
synth += (kdb_thrctx->pcb_special.psr >> 41) & 3;
return (&synth);
}
return (&kdb_thrctx->pcb_special.rp);
case 333:
if (kdb_thrctx->pcb_special.__spare == ~0UL)
return (&kdb_thrctx->pcb_special.cfm);
return (&kdb_thrctx->pcb_special.pfs);
/* Registers 334-461: application registers. */
case 350: return (&kdb_thrctx->pcb_special.rsc);
case 351: /* bsp */
case 352: /* bspstore. */
synth = kdb_thrctx->pcb_special.bspstore;
if (kdb_thrctx->pcb_special.__spare == ~0UL) {
synth += kdb_thrctx->pcb_special.ndirty;
} else {
cfm = kdb_thrctx->pcb_special.pfs;
synth = ia64_bsp_adjust(synth,
IA64_CFM_SOF(cfm) - IA64_CFM_SOL(cfm));
}
return (&synth);
case 353: return (&kdb_thrctx->pcb_special.rnat);
case 370: return (&kdb_thrctx->pcb_special.unat);
case 374: return (&kdb_thrctx->pcb_special.fpsr);
case 398:
if (kdb_thrctx->pcb_special.__spare == ~0UL)
return (&kdb_thrctx->pcb_special.pfs);
break;
case 399: return (&kdb_thrctx->pcb_preserved.lc);
}
return (NULL);
}
void
gdb_cpu_setreg(int regnum, register_t val)
{
switch (regnum) {
case GDB_REG_PC: break;
}
}
int
gdb_cpu_query(void)
{
#if 0
uint64_t bspstore, *kstack;
#endif
uintmax_t slot;
if (!gdb_rx_equal("Part:dirty:read::"))
return (0);
if (gdb_rx_varhex(&slot) < 0) {
gdb_tx_err(EINVAL);
return (-1);
}
gdb_tx_err(EINVAL);
return (-1);
#if 0
/* slot is unsigned. No need to test for negative values. */
if (slot >= (kdb_frame->tf_special.ndirty >> 3)) {
return (-1);
}
/*
* If the trapframe describes a kernel entry, bspstore holds
* the address of the user backing store. Calculate the right
* kernel stack address. See also ptrace_machdep().
*/
bspstore = kdb_frame->tf_special.bspstore;
kstack = (bspstore >= IA64_RR_BASE(5)) ? (uint64_t*)bspstore :
(uint64_t*)(kdb_thread->td_kstack + (bspstore & 0x1ffUL));
gdb_tx_begin('\0');
gdb_tx_mem((void*)(kstack + slot), 8);
gdb_tx_end();
return (1);
#endif
}

54
sys/ia64/include/gdb_machdep.h Normal file
View File

@ -0,0 +1,54 @@
/*
* Copyright (c) 2004 Marcel Moolenaar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _MACHINE_GDB_MACHDEP_H_
#define _MACHINE_GDB_MACHDEP_H_
#define GDB_NREGS 462
#define GDB_REG_PC 331
#define GDB_BUFSZ (GDB_NREGS*16+128*16)
static __inline size_t
gdb_cpu_regsz(int regnum)
{
return ((regnum >= 128 && regnum < 256) ? 16 : 8);
}
static __inline int
gdb_cpu_signal(int vector, int dummy __unused)
{
/* Add 100 so GDB won't translate the vector into signal names. */
return (vector + 100);
}
void *gdb_cpu_getreg(int, size_t *);
void gdb_cpu_setreg(int, register_t);
int gdb_cpu_query(void);
#endif /* !_MACHINE_GDB_MACHDEP_H_ */

57
sys/sparc64/include/gdb_machdep.h Normal file
View File

@ -0,0 +1,57 @@
/*
* Copyright (c) 2004 Marcel Moolenaar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _MACHINE_GDB_MACHDEP_H_
#define _MACHINE_GDB_MACHDEP_H_
#define GDB_BUFSZ 600
#define GDB_NREGS 86
#define GDB_REG_PC 80
static __inline size_t
gdb_cpu_regsz(int regnum)
{
return ((regnum >= 32 && regnum < 64) ? sizeof(float) : sizeof(long));
}
static __inline int
gdb_cpu_query(void)
{
return (0);
}
static __inline int
gdb_cpu_signal(int vector, int _)
{
return (vector);
}
void *gdb_cpu_getreg(int, size_t *);
void gdb_cpu_setreg(int, register_t);
#endif /* !_MACHINE_GDB_MACHDEP_H_ */

70
sys/sparc64/sparc64/gdb_machdep.c Normal file
View File

@ -0,0 +1,70 @@
/*
* Copyright (c) 2004 Marcel Moolenaar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kdb.h>
#include <sys/kernel.h>
#include <sys/signal.h>
#include <machine/asm.h>
#include <machine/gdb_machdep.h>
#include <machine/pcb.h>
#include <machine/reg.h>
#include <gdb/gdb.h>
void *
gdb_cpu_getreg(int regnum, size_t *regsz)
{
static uint64_t synth;
*regsz = gdb_cpu_regsz(regnum);
switch (regnum) {
/* 0-7: g0-g7 */
/* 8-15: o0-o7 */
case 14:
synth = kdb_thrctx->pcb_sp - CCFSZ;
return (&synth);
/* 16-23: l0-l7 */
/* 24-31: i0-i7 */
case 30: return (&kdb_thrctx->pcb_sp);
/* 32-63: f0-f31 */
/* 64-79: f32-f62 (16 double FP) */
case 80: return (&kdb_thrctx->pcb_pc);
}
return (NULL);
}
void
gdb_cpu_setreg(int regnum, register_t val)
{
switch (regnum) {
}
}