/* Xtensa GNU/Linux native support.
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/* Xtensa GNU/Linux native support.
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Copyright (C) 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
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Copyright (C) 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
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This file is part of GDB.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "defs.h"
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#include "gdb_string.h"
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#include "gdb_string.h"
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#include "frame.h"
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#include "frame.h"
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#include "inferior.h"
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#include "inferior.h"
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#include "gdbcore.h"
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#include "gdbcore.h"
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#include "regcache.h"
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#include "regcache.h"
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#include "gdb_assert.h"
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#include "gdb_assert.h"
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#include "target.h"
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#include "target.h"
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#include "linux-nat.h"
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#include "linux-nat.h"
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#include <stdint.h>
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#include <stdint.h>
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#include <sys/types.h>
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/param.h>
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#include <signal.h>
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#include <signal.h>
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#include <sys/user.h>
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#include <sys/user.h>
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#include <sys/ioctl.h>
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#include <sys/ioctl.h>
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#include "gdb_wait.h"
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#include "gdb_wait.h"
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#include <fcntl.h>
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#include <fcntl.h>
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#include <sys/procfs.h>
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#include <sys/procfs.h>
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#include <sys/ptrace.h>
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#include <sys/ptrace.h>
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#include "gregset.h"
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#include "gregset.h"
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#include "xtensa-tdep.h"
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#include "xtensa-tdep.h"
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/* Extended register set depends on hardware configs.
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/* Extended register set depends on hardware configs.
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Keeping these definitions separately allows to introduce
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Keeping these definitions separately allows to introduce
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hardware-specific overlays. */
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hardware-specific overlays. */
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#include "xtensa-xtregs.c"
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#include "xtensa-xtregs.c"
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int
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int
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get_thread_id (ptid_t ptid)
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get_thread_id (ptid_t ptid)
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{
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{
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int tid = TIDGET (ptid);
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int tid = TIDGET (ptid);
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if (0 == tid)
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if (0 == tid)
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tid = PIDGET (ptid);
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tid = PIDGET (ptid);
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return tid;
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return tid;
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}
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}
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#define GET_THREAD_ID(PTID) get_thread_id (PTID)
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#define GET_THREAD_ID(PTID) get_thread_id (PTID)
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void
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void
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fill_gregset (const struct regcache *regcache,
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fill_gregset (const struct regcache *regcache,
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gdb_gregset_t *gregsetp, int regnum)
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gdb_gregset_t *gregsetp, int regnum)
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{
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{
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int i;
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int i;
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xtensa_elf_gregset_t *regs = (xtensa_elf_gregset_t *) gregsetp;
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xtensa_elf_gregset_t *regs = (xtensa_elf_gregset_t *) gregsetp;
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struct gdbarch *gdbarch = get_regcache_arch (regcache);
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struct gdbarch *gdbarch = get_regcache_arch (regcache);
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if (regnum == gdbarch_pc_regnum (gdbarch) || regnum == -1)
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if (regnum == gdbarch_pc_regnum (gdbarch) || regnum == -1)
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regcache_raw_collect (regcache, gdbarch_pc_regnum (gdbarch), ®s->pc);
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regcache_raw_collect (regcache, gdbarch_pc_regnum (gdbarch), ®s->pc);
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if (regnum == gdbarch_ps_regnum (gdbarch) || regnum == -1)
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if (regnum == gdbarch_ps_regnum (gdbarch) || regnum == -1)
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regcache_raw_collect (regcache, gdbarch_ps_regnum (gdbarch), ®s->ps);
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regcache_raw_collect (regcache, gdbarch_ps_regnum (gdbarch), ®s->ps);
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if (regnum == gdbarch_tdep (gdbarch)->wb_regnum || regnum == -1)
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if (regnum == gdbarch_tdep (gdbarch)->wb_regnum || regnum == -1)
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regcache_raw_collect (regcache,
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regcache_raw_collect (regcache,
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gdbarch_tdep (gdbarch)->wb_regnum,
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gdbarch_tdep (gdbarch)->wb_regnum,
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®s->windowbase);
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®s->windowbase);
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if (regnum == gdbarch_tdep (gdbarch)->ws_regnum || regnum == -1)
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if (regnum == gdbarch_tdep (gdbarch)->ws_regnum || regnum == -1)
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regcache_raw_collect (regcache,
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regcache_raw_collect (regcache,
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gdbarch_tdep (gdbarch)->ws_regnum,
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gdbarch_tdep (gdbarch)->ws_regnum,
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®s->windowstart);
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®s->windowstart);
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if (regnum == gdbarch_tdep (gdbarch)->lbeg_regnum || regnum == -1)
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if (regnum == gdbarch_tdep (gdbarch)->lbeg_regnum || regnum == -1)
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regcache_raw_collect (regcache,
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regcache_raw_collect (regcache,
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gdbarch_tdep (gdbarch)->lbeg_regnum,
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gdbarch_tdep (gdbarch)->lbeg_regnum,
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®s->lbeg);
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®s->lbeg);
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if (regnum == gdbarch_tdep (gdbarch)->lend_regnum || regnum == -1)
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if (regnum == gdbarch_tdep (gdbarch)->lend_regnum || regnum == -1)
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regcache_raw_collect (regcache,
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regcache_raw_collect (regcache,
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gdbarch_tdep (gdbarch)->lend_regnum,
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gdbarch_tdep (gdbarch)->lend_regnum,
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®s->lend);
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®s->lend);
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if (regnum == gdbarch_tdep (gdbarch)->lcount_regnum || regnum == -1)
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if (regnum == gdbarch_tdep (gdbarch)->lcount_regnum || regnum == -1)
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regcache_raw_collect (regcache,
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regcache_raw_collect (regcache,
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gdbarch_tdep (gdbarch)->lcount_regnum,
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gdbarch_tdep (gdbarch)->lcount_regnum,
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®s->lcount);
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®s->lcount);
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if (regnum == gdbarch_tdep (gdbarch)->sar_regnum || regnum == -1)
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if (regnum == gdbarch_tdep (gdbarch)->sar_regnum || regnum == -1)
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regcache_raw_collect (regcache,
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regcache_raw_collect (regcache,
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gdbarch_tdep (gdbarch)->sar_regnum,
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gdbarch_tdep (gdbarch)->sar_regnum,
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®s->sar);
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®s->sar);
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if (regnum >=gdbarch_tdep (gdbarch)->ar_base
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if (regnum >=gdbarch_tdep (gdbarch)->ar_base
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&& regnum < gdbarch_tdep (gdbarch)->ar_base
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&& regnum < gdbarch_tdep (gdbarch)->ar_base
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+ gdbarch_tdep (gdbarch)->num_aregs)
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+ gdbarch_tdep (gdbarch)->num_aregs)
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regcache_raw_collect (regcache,regnum,
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regcache_raw_collect (regcache,regnum,
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®s->ar[regnum - gdbarch_tdep (gdbarch)->ar_base]);
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®s->ar[regnum - gdbarch_tdep (gdbarch)->ar_base]);
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else if (regnum == -1)
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else if (regnum == -1)
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{
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{
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for (i = 0; i < gdbarch_tdep (gdbarch)->num_aregs; ++i)
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for (i = 0; i < gdbarch_tdep (gdbarch)->num_aregs; ++i)
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regcache_raw_collect (regcache,
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regcache_raw_collect (regcache,
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gdbarch_tdep (gdbarch)->ar_base + i,
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gdbarch_tdep (gdbarch)->ar_base + i,
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®s->ar[i]);
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®s->ar[i]);
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}
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}
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}
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}
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void
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void
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supply_gregset_reg (struct regcache *regcache,
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supply_gregset_reg (struct regcache *regcache,
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const gdb_gregset_t *gregsetp, int regnum)
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const gdb_gregset_t *gregsetp, int regnum)
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{
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{
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int i;
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int i;
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xtensa_elf_gregset_t *regs = (xtensa_elf_gregset_t *) gregsetp;
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xtensa_elf_gregset_t *regs = (xtensa_elf_gregset_t *) gregsetp;
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struct gdbarch *gdbarch = get_regcache_arch (regcache);
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struct gdbarch *gdbarch = get_regcache_arch (regcache);
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if (regnum == gdbarch_pc_regnum (gdbarch) || regnum == -1)
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if (regnum == gdbarch_pc_regnum (gdbarch) || regnum == -1)
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regcache_raw_supply (regcache, gdbarch_pc_regnum (gdbarch), ®s->pc);
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regcache_raw_supply (regcache, gdbarch_pc_regnum (gdbarch), ®s->pc);
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if (regnum == gdbarch_ps_regnum (gdbarch) || regnum == -1)
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if (regnum == gdbarch_ps_regnum (gdbarch) || regnum == -1)
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regcache_raw_supply (regcache, gdbarch_ps_regnum (gdbarch), ®s->ps);
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regcache_raw_supply (regcache, gdbarch_ps_regnum (gdbarch), ®s->ps);
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if (regnum == gdbarch_tdep (gdbarch)->wb_regnum || regnum == -1)
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if (regnum == gdbarch_tdep (gdbarch)->wb_regnum || regnum == -1)
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regcache_raw_supply (regcache,
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regcache_raw_supply (regcache,
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gdbarch_tdep (gdbarch)->wb_regnum,
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gdbarch_tdep (gdbarch)->wb_regnum,
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®s->windowbase);
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®s->windowbase);
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if (regnum == gdbarch_tdep (gdbarch)->ws_regnum || regnum == -1)
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if (regnum == gdbarch_tdep (gdbarch)->ws_regnum || regnum == -1)
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regcache_raw_supply (regcache,
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regcache_raw_supply (regcache,
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gdbarch_tdep (gdbarch)->ws_regnum,
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gdbarch_tdep (gdbarch)->ws_regnum,
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®s->windowstart);
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®s->windowstart);
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if (regnum == gdbarch_tdep (gdbarch)->lbeg_regnum || regnum == -1)
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if (regnum == gdbarch_tdep (gdbarch)->lbeg_regnum || regnum == -1)
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regcache_raw_supply (regcache,
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regcache_raw_supply (regcache,
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gdbarch_tdep (gdbarch)->lbeg_regnum,
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gdbarch_tdep (gdbarch)->lbeg_regnum,
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®s->lbeg);
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®s->lbeg);
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if (regnum == gdbarch_tdep (gdbarch)->lend_regnum || regnum == -1)
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if (regnum == gdbarch_tdep (gdbarch)->lend_regnum || regnum == -1)
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regcache_raw_supply (regcache,
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regcache_raw_supply (regcache,
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gdbarch_tdep (gdbarch)->lend_regnum,
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gdbarch_tdep (gdbarch)->lend_regnum,
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®s->lend);
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®s->lend);
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if (regnum == gdbarch_tdep (gdbarch)->lcount_regnum || regnum == -1)
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if (regnum == gdbarch_tdep (gdbarch)->lcount_regnum || regnum == -1)
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regcache_raw_supply (regcache,
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regcache_raw_supply (regcache,
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gdbarch_tdep (gdbarch)->lcount_regnum,
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gdbarch_tdep (gdbarch)->lcount_regnum,
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®s->lcount);
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®s->lcount);
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if (regnum == gdbarch_tdep (gdbarch)->sar_regnum || regnum == -1)
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if (regnum == gdbarch_tdep (gdbarch)->sar_regnum || regnum == -1)
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regcache_raw_supply (regcache,
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regcache_raw_supply (regcache,
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gdbarch_tdep (gdbarch)->sar_regnum,
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gdbarch_tdep (gdbarch)->sar_regnum,
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®s->sar);
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®s->sar);
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if (regnum >=gdbarch_tdep (gdbarch)->ar_base
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if (regnum >=gdbarch_tdep (gdbarch)->ar_base
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&& regnum < gdbarch_tdep (gdbarch)->ar_base
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&& regnum < gdbarch_tdep (gdbarch)->ar_base
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+ gdbarch_tdep (gdbarch)->num_aregs)
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+ gdbarch_tdep (gdbarch)->num_aregs)
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regcache_raw_supply (regcache,regnum,
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regcache_raw_supply (regcache,regnum,
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®s->ar[regnum - gdbarch_tdep (gdbarch)->ar_base]);
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®s->ar[regnum - gdbarch_tdep (gdbarch)->ar_base]);
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else if (regnum == -1)
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else if (regnum == -1)
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{
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{
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for (i = 0; i < gdbarch_tdep (gdbarch)->num_aregs; ++i)
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for (i = 0; i < gdbarch_tdep (gdbarch)->num_aregs; ++i)
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regcache_raw_supply (regcache,
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regcache_raw_supply (regcache,
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gdbarch_tdep (gdbarch)->ar_base + i,
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gdbarch_tdep (gdbarch)->ar_base + i,
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®s->ar[i]);
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®s->ar[i]);
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}
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}
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}
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}
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void
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void
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supply_gregset (struct regcache *regcache, const gdb_gregset_t *gregsetp)
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supply_gregset (struct regcache *regcache, const gdb_gregset_t *gregsetp)
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{
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{
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supply_gregset_reg (regcache, gregsetp, -1);
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supply_gregset_reg (regcache, gregsetp, -1);
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}
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}
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void
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void
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fill_fpregset (const struct regcache *regcache,
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fill_fpregset (const struct regcache *regcache,
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gdb_fpregset_t *fpregsetp, int regnum)
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gdb_fpregset_t *fpregsetp, int regnum)
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{
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{
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return;
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return;
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}
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}
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void
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void
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supply_fpregset (struct regcache *regcache,
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supply_fpregset (struct regcache *regcache,
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const gdb_fpregset_t *fpregsetp)
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const gdb_fpregset_t *fpregsetp)
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{
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{
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return;
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return;
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}
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}
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/* Fetch greg-register(s) from process/thread TID
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/* Fetch greg-register(s) from process/thread TID
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and store value(s) in GDB's register array. */
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and store value(s) in GDB's register array. */
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static void
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static void
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fetch_gregs (struct regcache *regcache, int regnum)
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fetch_gregs (struct regcache *regcache, int regnum)
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{
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{
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int tid = GET_THREAD_ID (inferior_ptid);
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int tid = GET_THREAD_ID (inferior_ptid);
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const gdb_gregset_t regs;
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const gdb_gregset_t regs;
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int areg;
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int areg;
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if (ptrace (PTRACE_GETREGS, tid, 0, (long) ®s) < 0)
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if (ptrace (PTRACE_GETREGS, tid, 0, (long) ®s) < 0)
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{
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{
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perror_with_name (_("Couldn't get registers"));
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perror_with_name (_("Couldn't get registers"));
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return;
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return;
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}
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}
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supply_gregset_reg (regcache, ®s, regnum);
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supply_gregset_reg (regcache, ®s, regnum);
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}
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}
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/* Store greg-register(s) in GDB's register
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/* Store greg-register(s) in GDB's register
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array into the process/thread specified by TID. */
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array into the process/thread specified by TID. */
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static void
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static void
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store_gregs (struct regcache *regcache, int regnum)
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store_gregs (struct regcache *regcache, int regnum)
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{
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{
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int tid = GET_THREAD_ID (inferior_ptid);
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int tid = GET_THREAD_ID (inferior_ptid);
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gdb_gregset_t regs;
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gdb_gregset_t regs;
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int areg;
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int areg;
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if (ptrace (PTRACE_GETREGS, tid, 0, (long) ®s) < 0)
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if (ptrace (PTRACE_GETREGS, tid, 0, (long) ®s) < 0)
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{
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{
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perror_with_name (_("Couldn't get registers"));
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perror_with_name (_("Couldn't get registers"));
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return;
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return;
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}
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}
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fill_gregset (regcache, ®s, regnum);
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fill_gregset (regcache, ®s, regnum);
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if (ptrace (PTRACE_SETREGS, tid, 0, (long) ®s) < 0)
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if (ptrace (PTRACE_SETREGS, tid, 0, (long) ®s) < 0)
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{
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{
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perror_with_name (_("Couldn't write registers"));
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perror_with_name (_("Couldn't write registers"));
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return;
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return;
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}
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}
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}
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}
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static int xtreg_lo;
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static int xtreg_lo;
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static int xtreg_high;
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static int xtreg_high;
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/* Fetch/Store Xtensa TIE registers. Xtensa GNU/Linux PTRACE
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/* Fetch/Store Xtensa TIE registers. Xtensa GNU/Linux PTRACE
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interface provides special requests for this. */
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interface provides special requests for this. */
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static void
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static void
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fetch_xtregs (struct regcache *regcache, int regnum)
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fetch_xtregs (struct regcache *regcache, int regnum)
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{
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{
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int tid = GET_THREAD_ID (inferior_ptid);
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int tid = GET_THREAD_ID (inferior_ptid);
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const xtensa_regtable_t *ptr;
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const xtensa_regtable_t *ptr;
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char xtregs [XTENSA_ELF_XTREG_SIZE];
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char xtregs [XTENSA_ELF_XTREG_SIZE];
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|
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if (ptrace (PTRACE_GETXTREGS, tid, 0, (long)&xtregs) < 0)
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if (ptrace (PTRACE_GETXTREGS, tid, 0, (long)&xtregs) < 0)
|
perror_with_name (_("Couldn't get extended registers"));
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perror_with_name (_("Couldn't get extended registers"));
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|
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for (ptr = xtensa_regmap_table; ptr->name; ptr++)
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for (ptr = xtensa_regmap_table; ptr->name; ptr++)
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if (regnum == ptr->gdb_regnum || regnum == -1)
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if (regnum == ptr->gdb_regnum || regnum == -1)
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regcache_raw_supply (regcache, ptr->gdb_regnum,
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regcache_raw_supply (regcache, ptr->gdb_regnum,
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xtregs + ptr->ptrace_offset);
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xtregs + ptr->ptrace_offset);
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}
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}
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|
|
static void
|
static void
|
store_xtregs (struct regcache *regcache, int regnum)
|
store_xtregs (struct regcache *regcache, int regnum)
|
{
|
{
|
int tid = GET_THREAD_ID (inferior_ptid);
|
int tid = GET_THREAD_ID (inferior_ptid);
|
const xtensa_regtable_t *ptr;
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const xtensa_regtable_t *ptr;
|
char xtregs [XTENSA_ELF_XTREG_SIZE];
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char xtregs [XTENSA_ELF_XTREG_SIZE];
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|
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if (ptrace (PTRACE_GETXTREGS, tid, 0, (long)&xtregs) < 0)
|
if (ptrace (PTRACE_GETXTREGS, tid, 0, (long)&xtregs) < 0)
|
perror_with_name (_("Couldn't get extended registers"));
|
perror_with_name (_("Couldn't get extended registers"));
|
|
|
for (ptr = xtensa_regmap_table; ptr->name; ptr++)
|
for (ptr = xtensa_regmap_table; ptr->name; ptr++)
|
if (regnum == ptr->gdb_regnum || regnum == -1)
|
if (regnum == ptr->gdb_regnum || regnum == -1)
|
regcache_raw_collect (regcache, ptr->gdb_regnum,
|
regcache_raw_collect (regcache, ptr->gdb_regnum,
|
xtregs + ptr->ptrace_offset);
|
xtregs + ptr->ptrace_offset);
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|
|
if (ptrace (PTRACE_SETXTREGS, tid, 0, (long)&xtregs) < 0)
|
if (ptrace (PTRACE_SETXTREGS, tid, 0, (long)&xtregs) < 0)
|
perror_with_name (_("Couldn't write extended registers"));
|
perror_with_name (_("Couldn't write extended registers"));
|
}
|
}
|
|
|
void
|
void
|
xtensa_linux_fetch_inferior_registers (struct target_ops *ops,
|
xtensa_linux_fetch_inferior_registers (struct target_ops *ops,
|
struct regcache *regcache, int regnum)
|
struct regcache *regcache, int regnum)
|
{
|
{
|
if (regnum == -1)
|
if (regnum == -1)
|
{
|
{
|
fetch_gregs (regcache, regnum);
|
fetch_gregs (regcache, regnum);
|
fetch_xtregs (regcache, regnum);
|
fetch_xtregs (regcache, regnum);
|
}
|
}
|
else if ((regnum < xtreg_lo) || (regnum > xtreg_high))
|
else if ((regnum < xtreg_lo) || (regnum > xtreg_high))
|
fetch_gregs (regcache, regnum);
|
fetch_gregs (regcache, regnum);
|
else
|
else
|
fetch_xtregs (regcache, regnum);
|
fetch_xtregs (regcache, regnum);
|
}
|
}
|
|
|
void
|
void
|
xtensa_linux_store_inferior_registers (struct target_ops *ops,
|
xtensa_linux_store_inferior_registers (struct target_ops *ops,
|
struct regcache *regcache, int regnum)
|
struct regcache *regcache, int regnum)
|
{
|
{
|
if (regnum == -1)
|
if (regnum == -1)
|
{
|
{
|
store_gregs (regcache, regnum);
|
store_gregs (regcache, regnum);
|
store_xtregs (regcache, regnum);
|
store_xtregs (regcache, regnum);
|
}
|
}
|
else if ((regnum < xtreg_lo) || (regnum > xtreg_high))
|
else if ((regnum < xtreg_lo) || (regnum > xtreg_high))
|
store_gregs (regcache, regnum);
|
store_gregs (regcache, regnum);
|
else
|
else
|
store_xtregs (regcache, regnum);
|
store_xtregs (regcache, regnum);
|
}
|
}
|
|
|
void _initialize_xtensa_linux_nat (void);
|
void _initialize_xtensa_linux_nat (void);
|
|
|
void
|
void
|
_initialize_xtensa_linux_nat (void)
|
_initialize_xtensa_linux_nat (void)
|
{
|
{
|
struct target_ops *t;
|
struct target_ops *t;
|
const xtensa_regtable_t *ptr;
|
const xtensa_regtable_t *ptr;
|
|
|
/* Calculate the number range for extended registers. */
|
/* Calculate the number range for extended registers. */
|
xtreg_lo = 1000000000;
|
xtreg_lo = 1000000000;
|
xtreg_high = -1;
|
xtreg_high = -1;
|
for (ptr = xtensa_regmap_table; ptr->name; ptr++)
|
for (ptr = xtensa_regmap_table; ptr->name; ptr++)
|
{
|
{
|
if (ptr->gdb_regnum < xtreg_lo)
|
if (ptr->gdb_regnum < xtreg_lo)
|
xtreg_lo = ptr->gdb_regnum;
|
xtreg_lo = ptr->gdb_regnum;
|
if (ptr->gdb_regnum > xtreg_high)
|
if (ptr->gdb_regnum > xtreg_high)
|
xtreg_high = ptr->gdb_regnum;
|
xtreg_high = ptr->gdb_regnum;
|
}
|
}
|
|
|
/* Fill in the generic GNU/Linux methods. */
|
/* Fill in the generic GNU/Linux methods. */
|
t = linux_target ();
|
t = linux_target ();
|
|
|
/* Add our register access methods. */
|
/* Add our register access methods. */
|
t->to_fetch_registers = xtensa_linux_fetch_inferior_registers;
|
t->to_fetch_registers = xtensa_linux_fetch_inferior_registers;
|
t->to_store_registers = xtensa_linux_store_inferior_registers;
|
t->to_store_registers = xtensa_linux_store_inferior_registers;
|
|
|
linux_nat_add_target (t);
|
linux_nat_add_target (t);
|
}
|
}
|
|
|
