| /* Native-dependent code for OpenBSD/sparc64. |
| |
| Copyright (C) 2003-2024 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 "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); |
| } |