/* Native-dependent code for OpenBSD/sparc64. Copyright (C) 2003-2018 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 . */ #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 #include #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 (regcache, SPARC_SP_REGNUM, &pcb->pcb_sp); regcache_raw_supply (regcache, SPARC64_PC_REGNUM, &pcb->pcb_pc); state = pcb->pcb_pstate << 8 | pcb->pcb_cwp; regcache_raw_supply (regcache, 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 the_sparc64_obsd_nat_target; void _initialize_sparc64obsd_nat (void) { 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); }