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- /* Native-dependent code for OpenBSD/sparc64.
- Copyright (C) 2003-2022 Free Software Foundation, Inc.
- 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 "defs.h"
- #include "gdbcore.h"
- #include "regcache.h"
- #include "target.h"
- #include "sparc64-tdep.h"
- #include "sparc-nat.h"
- #include "obsd-nat.h"
- /* Determine whether `gregset_t' contains register REGNUM. */
- static int
- sparc64obsd_gregset_supplies_p (struct gdbarch *gdbarch, int regnum)
- {
- /* Integer registers. */
- if ((regnum >= SPARC_G1_REGNUM && regnum <= SPARC_G7_REGNUM)
- || (regnum >= SPARC_O0_REGNUM && regnum <= SPARC_O7_REGNUM)
- || (regnum >= SPARC_L0_REGNUM && regnum <= SPARC_L7_REGNUM)
- || (regnum >= SPARC_I0_REGNUM && regnum <= SPARC_I7_REGNUM))
- return 1;
- /* Control registers. */
- if (regnum == SPARC64_PC_REGNUM
- || regnum == SPARC64_NPC_REGNUM
- || regnum == SPARC64_STATE_REGNUM
- || regnum == SPARC64_Y_REGNUM)
- return 1;
- return 0;
- }
- /* Determine whether `fpregset_t' contains register REGNUM. */
- static int
- sparc64obsd_fpregset_supplies_p (struct gdbarch *gdbarch, int regnum)
- {
- /* Floating-point registers. */
- if ((regnum >= SPARC_F0_REGNUM && regnum <= SPARC_F31_REGNUM)
- || (regnum >= SPARC64_F32_REGNUM && regnum <= SPARC64_F62_REGNUM))
- return 1;
- /* Control registers. */
- if (regnum == SPARC64_FSR_REGNUM)
- return 1;
- return 0;
- }
- /* Support for debugging kernel virtual memory images. */
- #include <sys/types.h>
- #include <machine/pcb.h>
- #include "bsd-kvm.h"
- static int
- sparc64obsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
- {
- u_int64_t state;
- int regnum;
- /* The following is true for OpenBSD 3.0:
- The pcb contains %sp and %pc, %pstate and %cwp. From this
- information we reconstruct the register state as it would look
- when we just returned from cpu_switch(). */
- /* The stack pointer shouldn't be zero. */
- if (pcb->pcb_sp == 0)
- return 0;
- /* If the program counter is zero, this is probably a core dump, and
- we can get %pc from the stack. */
- if (pcb->pcb_pc == 0)
- read_memory(pcb->pcb_sp + BIAS - 176 + (11 * 8),
- (gdb_byte *)&pcb->pcb_pc, sizeof pcb->pcb_pc);
- regcache->raw_supply (SPARC_SP_REGNUM, &pcb->pcb_sp);
- regcache->raw_supply (SPARC64_PC_REGNUM, &pcb->pcb_pc);
- state = pcb->pcb_pstate << 8 | pcb->pcb_cwp;
- regcache->raw_supply (SPARC64_STATE_REGNUM, &state);
- sparc_supply_rwindow (regcache, pcb->pcb_sp, -1);
- return 1;
- }
- /* Add some extra features to the generic SPARC target. */
- static sparc_target<obsd_nat_target> the_sparc64_obsd_nat_target;
- void _initialize_sparc64obsd_nat ();
- void
- _initialize_sparc64obsd_nat ()
- {
- sparc_supply_gregset = sparc64_supply_gregset;
- sparc_collect_gregset = sparc64_collect_gregset;
- sparc_supply_fpregset = sparc64_supply_fpregset;
- sparc_collect_fpregset = sparc64_collect_fpregset;
- sparc_gregset_supplies_p = sparc64obsd_gregset_supplies_p;
- sparc_fpregset_supplies_p = sparc64obsd_fpregset_supplies_p;
- sparc_gregmap = &sparc64nbsd_gregmap;
- sparc_fpregmap = &sparc64_bsd_fpregmap;
- /* Add some extra features to the generic SPARC target. */
- add_inf_child_target (&the_sparc64_obsd_nat_target);
- /* Support debugging kernel virtual memory images. */
- bsd_kvm_add_target (sparc64obsd_supply_pcb);
- }
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