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/* libthread_db helper functions for the remote server for GDB.
Copyright (C) 2002-2020 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 3 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, see <http://www.gnu.org/licenses/>. */
#include "server.h"
/* This file is currently tied to GNU/Linux. It should scale well to
another libthread_db implementation, with the appropriate gdbserver
hooks, but for now this means we can use GNU/Linux's target data. */
#include "linux-low.h"
#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;
#ifdef HAVE_LINUX_REGSETS
#define HAVE_REGSETS
#endif
#ifdef HAVE_REGSETS
static struct regset_info *
gregset_info (void)
{
int i = 0;
const regs_info *regs_info = the_linux_target->get_regs_info ();
struct regsets_info *regsets_info = regs_info->regsets_info;
while (regsets_info->regsets[i].size != -1)
{
if (regsets_info->regsets[i].type == GENERAL_REGS)
break;
i++;
}
return ®sets_info->regsets[i];
}
#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, psaddr_t *sym_addr)
{
CORE_ADDR addr;
if (thread_db_look_up_one_symbol (name, &addr) == 0)
return PS_NOSYM;
*sym_addr = (psaddr_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, psaddr_t addr,
gdb_ps_read_buf_t buf, gdb_ps_size_t size)
{
if (read_inferior_memory ((uintptr_t) addr, (gdb_byte *) buf, size) != 0)
return PS_ERR;
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, psaddr_t addr,
gdb_ps_write_buf_t buf, gdb_ps_size_t size)
{
if (target_write_memory ((uintptr_t) addr, (const gdb_byte *) buf, size)
!= 0)
return PS_ERR;
return PS_OK;
}
/* 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)
{
#ifdef HAVE_REGSETS
struct lwp_info *lwp;
struct thread_info *reg_thread, *saved_thread;
struct regcache *regcache;
lwp = find_lwp_pid (ptid_t (lwpid));
if (lwp == NULL)
return PS_ERR;
reg_thread = get_lwp_thread (lwp);
saved_thread = current_thread;
current_thread = reg_thread;
regcache = get_thread_regcache (current_thread, 1);
gregset_info ()->fill_function (regcache, gregset);
current_thread = saved_thread;
return PS_OK;
#else
return PS_ERR;
#endif
}
/* 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)
{
/* Unneeded. */
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, prfpregset_t *fpregset)
{
/* Unneeded. */
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 prfpregset_t *fpregset)
{
/* Unneeded. */
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 pid_of (current_thread);
}
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