void
riscv_linux_nat_target::store_registers (struct regcache *regcache, int regnum)
{
int tid;
tid = get_ptrace_pid (regcache->ptid ());
if ((regnum >= RISCV_ZERO_REGNUM && regnum <= RISCV_PC_REGNUM)
|| (regnum == -1))
{
struct iovec iov;
elf_gregset_t regs;
iov.iov_base = ®s;
iov.iov_len = sizeof (regs);
if (ptrace (PTRACE_GETREGSET, tid, NT_PRSTATUS,
(PTRACE_TYPE_ARG3) &iov) == -1)
perror_with_name (_("Couldn't get registers"));
else
{
fill_gregset (regcache, ®s, regnum);
if (ptrace (PTRACE_SETREGSET, tid, NT_PRSTATUS,
(PTRACE_TYPE_ARG3) &iov) == -1)
perror_with_name (_("Couldn't set registers"));
}
}
if ((regnum >= RISCV_FIRST_FP_REGNUM
&& regnum <= RISCV_LAST_FP_REGNUM)
|| (regnum == RISCV_CSR_FCSR_REGNUM)
|| (regnum == -1))
{
struct iovec iov;
elf_fpregset_t regs;
iov.iov_base = ®s;
iov.iov_len = sizeof (regs);
if (ptrace (PTRACE_GETREGSET, tid, NT_FPREGSET,
(PTRACE_TYPE_ARG3) &iov) == -1)
perror_with_name (_("Couldn't get registers"));
else
{
fill_fpregset (regcache, ®s, regnum);
if (ptrace (PTRACE_SETREGSET, tid, NT_FPREGSET,
(PTRACE_TYPE_ARG3) &iov) == -1)
perror_with_name (_("Couldn't set registers"));
}
}
/* Access to CSRs has potential security issues, don't support them for
now. */
}
ps_err_e
ps_lgetfpregs (struct ps_prochandle *ph, lwpid_t lwpid, gdb_prfpregset_t *fpregset)
{
struct regcache *regcache = get_ps_regcache (ph, lwpid);
target_fetch_registers (regcache, -1);
fill_fpregset (regcache, (gdb_fpregset_t *) fpregset, -1);
return PS_OK;
}
ps_err_e
ps_lgetfpregs (struct ps_prochandle *ph, lwpid_t lwpid, prfpregset_t *fpregset)
{
struct cleanup *old_chain;
old_chain = save_inferior_ptid ();
inferior_ptid = BUILD_LWP (lwpid, PIDGET (inferior_ptid));
target_fetch_registers (-1);
fill_fpregset (fpregset, -1);
do_cleanups (old_chain);
return PS_OK;
}
static void
fbsd_lwp_store_registers (struct target_ops *ops,
struct regcache *regcache, int regnum)
{
gregset_t gregs;
fpregset_t fpregs;
lwpid_t lwp;
#ifdef PT_GETXMMREGS
char xmmregs[512];
#endif
/* FIXME, is it possible ? */
if (!IS_LWP (inferior_ptid))
{
struct target_ops *beneath = find_target_beneath (ops);
beneath->to_store_registers (ops, regcache, regnum);
return ;
}
lwp = GET_LWP (inferior_ptid);
if (regnum != -1)
if (ptrace (PT_GETREGS, lwp, (caddr_t) &gregs, 0) == -1)
error ("Cannot get lwp %d registers: %s\n", lwp, safe_strerror (errno));
fill_gregset (regcache, &gregs, regnum);
if (ptrace (PT_SETREGS, lwp, (caddr_t) &gregs, 0) == -1)
error ("Cannot set lwp %d registers: %s\n", lwp, safe_strerror (errno));
#ifdef PT_GETXMMREGS
if (regnum != -1)
if (ptrace (PT_GETXMMREGS, lwp, xmmregs, 0) == -1)
goto noxmm;
i387_collect_fxsave (regcache, regnum, xmmregs);
if (ptrace (PT_SETXMMREGS, lwp, xmmregs, 0) == -1)
goto noxmm;
return;
noxmm:
#endif
if (regnum != -1)
if (ptrace (PT_GETFPREGS, lwp, (caddr_t) &fpregs, 0) == -1)
error ("Cannot get lwp %d float registers: %s\n", lwp,
safe_strerror (errno));
fill_fpregset (regcache, &fpregs, regnum);
if (ptrace (PT_SETFPREGS, lwp, (caddr_t) &fpregs, 0) == -1)
error ("Cannot set lwp %d float registers: %s\n", lwp,
safe_strerror (errno));
}
static void
store_fpregs (const struct regcache *regcache, int tid, int regno)
{
elf_fpregset_t fpregs;
if (ptrace (PTRACE_GETFPREGS, tid, 0, (int) &fpregs) < 0)
perror_with_name (_("Couldn't get floating point status"));
fill_fpregset (regcache, &fpregs, regno);
if (ptrace (PTRACE_SETFPREGS, tid, 0, (int) &fpregs) < 0)
perror_with_name (_("Couldn't write floating point status"));
}
ps_err_e
ps_lgetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid,
gdb_prfpregset_t *fpregset)
{
ptid_t ptid = ptid_build (ptid_get_pid (ph->ptid), lwpid, 0);
struct regcache *regcache
= get_thread_arch_regcache (ptid, target_gdbarch ());
target_fetch_registers (regcache, -1);
fill_fpregset (regcache, (gdb_fpregset_t *) fpregset, -1);
return PS_OK;
}
static void
fbsd_lwp_store_registers (int regno)
{
gregset_t gregs;
fpregset_t fpregs;
lwpid_t lwp;
#ifdef PT_GETXMMREGS
char xmmregs[512];
#endif
/* FIXME, is it possible ? */
if (!IS_LWP (inferior_ptid))
{
child_ops.to_store_registers (regno);
return ;
}
lwp = GET_LWP (inferior_ptid);
if (regno != -1)
if (ptrace (PT_GETREGS, lwp, (caddr_t) &gregs, 0) == -1)
error ("Cannot get lwp %d registers: %s\n", lwp, safe_strerror (errno));
fill_gregset (&gregs, regno);
if (ptrace (PT_SETREGS, lwp, (caddr_t) &gregs, 0) == -1)
error ("Cannot set lwp %d registers: %s\n", lwp, safe_strerror (errno));
#ifdef PT_GETXMMREGS
if (regno != -1)
if (ptrace (PT_GETXMMREGS, lwp, xmmregs, 0) == -1)
goto noxmm;
i387_fill_fxsave (xmmregs, regno);
if (ptrace (PT_SETXMMREGS, lwp, xmmregs, 0) == -1)
goto noxmm;
return;
noxmm:
#endif
if (regno != -1)
if (ptrace (PT_GETFPREGS, lwp, (caddr_t) &fpregs, 0) == -1)
error ("Cannot get lwp %d float registers: %s\n", lwp,
safe_strerror (errno));
fill_fpregset (&fpregs, regno);
if (ptrace (PT_SETFPREGS, lwp, (caddr_t) &fpregs, 0) == -1)
error ("Cannot set lwp %d float registers: %s\n", lwp,
safe_strerror (errno));
}
ps_err_e
ps_lgetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid,
gdb_prfpregset_t *fpregset)
{
struct cleanup *old_chain = save_inferior_ptid ();
inferior_ptid = BUILD_LWP (lwpid, ph->pid);
target_fetch_registers (-1);
fill_fpregset ((gdb_fpregset_t *) fpregset, -1);
do_cleanups (old_chain);
return PS_OK;
}
ps_err_e
ps_lgetfpregs (struct ps_prochandle *ph, lwpid_t lwpid, prfpregset_t *fpregset)
{
struct cleanup *old_chain;
struct regcache *regcache;
old_chain = save_inferior_ptid ();
inferior_ptid = BUILD_LWP (lwpid, ph->pid);
regcache = get_thread_arch_regcache (inferior_ptid, target_gdbarch);
target_fetch_registers (regcache, -1);
fill_fpregset (regcache, fpregset, -1);
do_cleanups (old_chain);
return PS_OK;
}
static int
nbsd_thread_proc_getregs (void *arg, int regset, int lwp, void *buf)
{
struct nbsd_thread_proc_arg *a = (struct nbsd_thread_proc_arg *) arg;
struct regcache *cache = a->cache;
struct target_ops *ops = a->ops;
struct cleanup *old_chain;
struct target_ops *beneath = find_target_beneath (ops);
int ret;
old_chain = save_inferior_ptid ();
if (target_has_execution)
{
/* Fetching registers from a live process requires that
inferior_ptid is a LWP value rather than a thread value. */
inferior_ptid = ptid_build (ptid_get_pid (main_ptid), lwp, 0);
beneath->to_fetch_registers (beneath, cache, -1);
}
else
{
/* Fetching registers from a core process requires that
the PID value of inferior_ptid have the funky value that
the kernel drops rather than the real PID. Gross. */
inferior_ptid = pid_to_ptid ((lwp << 16) | ptid_get_pid (main_ptid));
beneath->to_fetch_registers (ops, cache, -1);
}
ret = 0;
switch (regset)
{
case 0:
fill_gregset (cache, (gregset_t *)buf, -1);
break;
case 1:
#ifdef HAVE_FPREGS
fill_fpregset (cache, (fpregset_t *)buf, -1);
#endif
break;
default: /* XXX need to handle other reg sets: SSE, AltiVec, etc. */
ret = TD_ERR_INVAL;
}
do_cleanups (old_chain);
return ret;
}
/* Store all valid floating-point registers in GDB's register cache
into the process/thread specified by TID. */
static void
store_fpregs (int tid, int regnum)
{
fpregset_t fpregs;
ptrace_area parea;
parea.len = sizeof (fpregs);
parea.process_addr = (addr_t) &fpregs;
parea.kernel_addr = offsetof (struct user_regs_struct, fp_regs);
if (ptrace (PTRACE_PEEKUSR_AREA, tid, (long) &parea) < 0)
perror_with_name ("Couldn't get floating point status");
fill_fpregset (&fpregs, regnum);
if (ptrace (PTRACE_POKEUSR_AREA, tid, (long) &parea) < 0)
perror_with_name ("Couldn't write floating point status");
}
ps_err_e
ps_lgetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid,
prfpregset_t * fpregset)
{
struct cleanup *old_chain;
old_chain = save_inferior_ptid ();
inferior_ptid = BUILD_LWP (lwpid, PIDGET (inferior_ptid));
if (target_has_execution)
procfs_ops.to_fetch_registers (-1);
else
orig_core_ops.to_fetch_registers (-1);
fill_fpregset ((gdb_fpregset_t *) fpregset, -1);
do_cleanups (old_chain);
return PS_OK;
}
static char *
fbsd_make_corefile_notes (bfd *obfd, int *note_size)
{
gregset_t gregs;
fpregset_t fpregs;
char *note_data = NULL;
Elf_Internal_Ehdr *i_ehdrp;
char fakename;
/* Put a "FreeBSD" label in the ELF header. */
i_ehdrp = elf_elfheader (obfd);
i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_FREEBSD;
fill_gregset (&gregs, -1);
note_data = elfcore_write_prstatus (obfd, note_data, note_size,
ptid_get_pid (inferior_ptid),
stop_signal, &gregs);
fill_fpregset (&fpregs, -1);
note_data = elfcore_write_prfpreg (obfd, note_data, note_size,
&fpregs, sizeof (fpregs));
fakename = '\0';
note_data = elfcore_write_thrmisc (obfd, note_data, note_size,
&fakename, sizeof (fakename));
if (get_exec_file (0))
{
char *fname = strrchr (get_exec_file (0), '/') + 1;
char *psargs = xstrdup (fname);
if (get_inferior_args ())
psargs = reconcat (psargs, psargs, " ", get_inferior_args (), NULL);
note_data = elfcore_write_prpsinfo (obfd, note_data, note_size,
fname, psargs);
}
make_cleanup (xfree, note_data);
return note_data;
}
static void
fbsd_thread_store_registers (int regno)
{
prgregset_t gregset;
prfpregset_t fpregset;
td_thrhandle_t th;
td_err_e err;
#ifdef PT_GETXMMREGS
char xmmregs[512];
#endif
if (!IS_THREAD (inferior_ptid))
{
fbsd_lwp_store_registers (regno);
return;
}
err = td_ta_map_id2thr_p (thread_agent, GET_THREAD (inferior_ptid), &th);
if (err != TD_OK)
error ("Cannot find thread %d: Thread ID=%ld, %s",
pid_to_thread_id (inferior_ptid),
GET_THREAD (inferior_ptid),
thread_db_err_str (err));
if (regno != -1)
{
char old_value[MAX_REGISTER_SIZE];
regcache_collect (regno, old_value);
err = td_thr_getgregs_p (&th, gregset);
if (err != TD_OK)
error ("%s: td_thr_getgregs %s", __func__, thread_db_err_str (err));
#ifdef PT_GETXMMREGS
err = td_thr_getxmmregs_p (&th, xmmregs);
if (err != TD_OK)
{
#endif
err = td_thr_getfpregs_p (&th, &fpregset);
if (err != TD_OK)
error ("%s: td_thr_getfpgregs %s", __func__, thread_db_err_str (err));
#ifdef PT_GETXMMREGS
}
#endif
supply_register (regno, old_value);
}
fill_gregset (gregset, regno);
err = td_thr_setgregs_p (&th, gregset);
if (err != TD_OK)
error ("Cannot store general-purpose registers for thread %d: Thread ID=%d, %s",
pid_to_thread_id (inferior_ptid), GET_THREAD (inferior_ptid),
thread_db_err_str (err));
#ifdef PT_GETXMMREGS
i387_fill_fxsave (xmmregs, regno);
err = td_thr_setxmmregs_p (&th, xmmregs);
if (err == TD_OK)
return;
#endif
fill_fpregset (&fpregset, regno);
err = td_thr_setfpregs_p (&th, &fpregset);
if (err != TD_OK)
error ("Cannot store floating-point registers for thread %d: Thread ID=%d, %s",
pid_to_thread_id (inferior_ptid), GET_THREAD (inferior_ptid),
thread_db_err_str (err));
}
static void
sol_thread_store_registers (int regno)
{
thread_t thread;
td_thrhandle_t thandle;
td_err_e val;
prgregset_t gregset;
prfpregset_t fpregset;
#if 0
int xregsize;
caddr_t xregset;
#endif
if (!is_thread (inferior_ptid))
{ /* LWP: pass the request on to procfs.c */
procfs_ops.to_store_registers (regno);
return;
}
/* Solaris thread: convert inferior_ptid into a td_thrhandle_t */
thread = GET_THREAD (inferior_ptid);
val = p_td_ta_map_id2thr (main_ta, thread, &thandle);
if (val != TD_OK)
error ("sol_thread_store_registers: td_ta_map_id2thr %s",
td_err_string (val));
if (regno != -1)
{ /* Not writing all the regs */
char old_value[MAX_REGISTER_SIZE];
/* Save new register value. */
regcache_collect (regno, old_value);
val = p_td_thr_getgregs (&thandle, gregset);
if (val != TD_OK)
error ("sol_thread_store_registers: td_thr_getgregs %s",
td_err_string (val));
val = p_td_thr_getfpregs (&thandle, &fpregset);
if (val != TD_OK)
error ("sol_thread_store_registers: td_thr_getfpregs %s",
td_err_string (val));
/* Restore new register value. */
supply_register (regno, old_value);
#if 0
/* thread_db doesn't seem to handle this right */
val = td_thr_getxregsize (&thandle, &xregsize);
if (val != TD_OK && val != TD_NOXREGS)
error ("sol_thread_store_registers: td_thr_getxregsize %s",
td_err_string (val));
if (val == TD_OK)
{
xregset = alloca (xregsize);
val = td_thr_getxregs (&thandle, xregset);
if (val != TD_OK)
error ("sol_thread_store_registers: td_thr_getxregs %s",
td_err_string (val));
}
#endif
}
fill_gregset ((gdb_gregset_t *) &gregset, regno);
fill_fpregset ((gdb_fpregset_t *) &fpregset, regno);
val = p_td_thr_setgregs (&thandle, gregset);
if (val != TD_OK)
error ("sol_thread_store_registers: td_thr_setgregs %s",
td_err_string (val));
val = p_td_thr_setfpregs (&thandle, &fpregset);
if (val != TD_OK)
error ("sol_thread_store_registers: td_thr_setfpregs %s",
td_err_string (val));
#if 0
/* thread_db doesn't seem to handle this right */
val = td_thr_getxregsize (&thandle, &xregsize);
if (val != TD_OK && val != TD_NOXREGS)
error ("sol_thread_store_registers: td_thr_getxregsize %s",
td_err_string (val));
/* Should probably do something about writing the xregs here, but what are
they? */
#endif
}