binutils-gdb/gdb/gdbserver/proc-service.c

257 lines
6.2 KiB
C

/* libthread_db helper functions for the remote server for GDB.
Copyright 2002
Free Software Foundation, Inc.
Contributed by MontaVista Software.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include "server.h"
/* This file is currently tied to GNU/Linux. It should scale well to
another libthread_db implementation, with the approriate gdbserver
hooks, but for now this means we can use GNU/Linux's target data. */
#include "linux-low.h"
/* Correct for all GNU/Linux targets (for quite some time). */
#define GDB_GREGSET_T elf_gregset_t
#define GDB_FPREGSET_T elf_fpregset_t
#ifndef HAVE_ELF_FPREGSET_T
/* Make sure we have said types. Not all platforms bring in <linux/elf.h>
via <sys/procfs.h>. */
#ifdef HAVE_LINUX_ELF_H
#include <linux/elf.h>
#endif
#endif
#include "../gdb_proc_service.h"
typedef struct ps_prochandle *gdb_ps_prochandle_t;
typedef void *gdb_ps_read_buf_t;
typedef const void *gdb_ps_write_buf_t;
typedef size_t gdb_ps_size_t;
/* FIXME redo this right */
#if 0
#ifndef HAVE_LINUX_REGSETS
#error HAVE_LINUX_REGSETS required!
#else
static struct regset_info *
gregset_info(void)
{
int i = 0;
while (target_regsets[i].size != -1)
{
if (target_regsets[i].type == GENERAL_REGS)
break;
i++;
}
return &target_regsets[i];
}
static struct regset_info *
fpregset_info(void)
{
int i = 0;
while (target_regsets[i].size != -1)
{
if (target_regsets[i].type == FP_REGS)
break;
i++;
}
return &target_regsets[i];
}
#endif
#endif
/* Search for the symbol named NAME within the object named OBJ within
the target process PH. If the symbol is found the address of the
symbol is stored in SYM_ADDR. */
ps_err_e
ps_pglobal_lookup (gdb_ps_prochandle_t ph, const char *obj,
const char *name, paddr_t *sym_addr)
{
CORE_ADDR addr;
if (look_up_one_symbol (name, &addr) == 0)
return PS_NOSYM;
*sym_addr = (paddr_t) (unsigned long) addr;
return PS_OK;
}
/* Read SIZE bytes from the target process PH at address ADDR and copy
them into BUF. */
ps_err_e
ps_pdread (gdb_ps_prochandle_t ph, paddr_t addr,
gdb_ps_read_buf_t buf, gdb_ps_size_t size)
{
read_inferior_memory (addr, buf, size);
return PS_OK;
}
/* Write SIZE bytes from BUF into the target process PH at address ADDR. */
ps_err_e
ps_pdwrite (gdb_ps_prochandle_t ph, paddr_t addr,
gdb_ps_write_buf_t buf, gdb_ps_size_t size)
{
return write_inferior_memory (addr, buf, size);
}
/* Get the general registers of LWP LWPID within the target process PH
and store them in GREGSET. */
ps_err_e
ps_lgetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, prgregset_t gregset)
{
#if 0
struct thread_info *reg_inferior, *save_inferior;
void *regcache;
reg_inferior = (struct thread_info *) find_inferior_id (&all_threads,
lwpid);
if (reg_inferior == NULL)
return PS_ERR;
save_inferior = current_inferior;
current_inferior = reg_inferior;
regcache = new_register_cache ();
the_target->fetch_registers (0, regcache);
gregset_info()->fill_function (gregset, regcache);
free_register_cache (regcache);
current_inferior = save_inferior;
return PS_OK;
#endif
/* FIXME */
return PS_ERR;
}
/* Set the general registers of LWP LWPID within the target process PH
from GREGSET. */
ps_err_e
ps_lsetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, const prgregset_t gregset)
{
#if 0
struct thread_info *reg_inferior, *save_inferior;
void *regcache;
reg_inferior = (struct thread_info *) find_inferior_id (&all_threads, lwpid);
if (reg_inferior == NULL)
return PS_ERR;
save_inferior = current_inferior;
current_inferior = reg_inferior;
regcache = new_register_cache ();
gregset_info()->store_function (gregset, regcache);
the_target->store_registers (0, regcache);
free_register_cache (regcache);
current_inferior = save_inferior;
return PS_OK;
#endif
/* FIXME */
return PS_ERR;
}
/* Get the floating-point registers of LWP LWPID within the target
process PH and store them in FPREGSET. */
ps_err_e
ps_lgetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid,
gdb_prfpregset_t *fpregset)
{
#if 0
struct thread_info *reg_inferior, *save_inferior;
void *regcache;
reg_inferior = (struct thread_info *) find_inferior_id (&all_threads, lwpid);
if (reg_inferior == NULL)
return PS_ERR;
save_inferior = current_inferior;
current_inferior = reg_inferior;
regcache = new_register_cache ();
the_target->fetch_registers (0, regcache);
fpregset_info()->fill_function (fpregset, regcache);
free_register_cache (regcache);
current_inferior = save_inferior;
return PS_OK;
#endif
/* FIXME */
return PS_ERR;
}
/* Set the floating-point registers of LWP LWPID within the target
process PH from FPREGSET. */
ps_err_e
ps_lsetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid,
const gdb_prfpregset_t *fpregset)
{
#if 0
struct thread_info *reg_inferior, *save_inferior;
void *regcache;
reg_inferior = (struct thread_info *) find_inferior_id (&all_threads, lwpid);
if (reg_inferior == NULL)
return PS_ERR;
save_inferior = current_inferior;
current_inferior = reg_inferior;
regcache = new_register_cache ();
fpregset_info()->store_function (fpregset, regcache);
the_target->store_registers (0, regcache);
free_register_cache (regcache);
current_inferior = save_inferior;
return PS_OK;
#endif
/* FIXME */
return PS_ERR;
}
/* Return overall process id of the target PH. Special for GNU/Linux
-- not used on Solaris. */
pid_t
ps_getpid (gdb_ps_prochandle_t ph)
{
return ph->pid;
}