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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-7.1/] [gdb/] [sparc64nbsd-nat.c] - Rev 227
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/* Native-dependent code for NetBSD/sparc64. Copyright (C) 2003, 2004, 2006, 2007, 2008, 2009, 2010 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" /* NetBSD is different from the other OSes that support both SPARC and UltraSPARC in that the result of ptrace(2) depends on whether the traced process is 32-bit or 64-bit. */ static void sparc64nbsd_supply_gregset (const struct sparc_gregset *gregset, struct regcache *regcache, int regnum, const void *gregs) { int sparc32 = (gdbarch_ptr_bit (get_regcache_arch (regcache)) == 32); if (sparc32) sparc32_supply_gregset (&sparc32nbsd_gregset, regcache, regnum, gregs); else sparc64_supply_gregset (&sparc64nbsd_gregset, regcache, regnum, gregs); } static void sparc64nbsd_collect_gregset (const struct sparc_gregset *gregset, const struct regcache *regcache, int regnum, void *gregs) { int sparc32 = (gdbarch_ptr_bit (get_regcache_arch (regcache)) == 32); if (sparc32) sparc32_collect_gregset (&sparc32nbsd_gregset, regcache, regnum, gregs); else sparc64_collect_gregset (&sparc64nbsd_gregset, regcache, regnum, gregs); } static void sparc64nbsd_supply_fpregset (struct regcache *regcache, int regnum, const void *fpregs) { int sparc32 = (gdbarch_ptr_bit (get_regcache_arch (regcache)) == 32); if (sparc32) sparc32_supply_fpregset (regcache, regnum, fpregs); else sparc64_supply_fpregset (regcache, regnum, fpregs); } static void sparc64nbsd_collect_fpregset (const struct regcache *regcache, int regnum, void *fpregs) { int sparc32 = (gdbarch_ptr_bit (get_regcache_arch (regcache)) == 32); if (sparc32) sparc32_collect_fpregset (regcache, regnum, fpregs); else sparc64_collect_fpregset (regcache, regnum, fpregs); } /* Determine whether `gregset_t' contains register REGNUM. */ static int sparc64nbsd_gregset_supplies_p (struct gdbarch *gdbarch, int regnum) { if (gdbarch_ptr_bit (gdbarch) == 32) return sparc32_gregset_supplies_p (gdbarch, 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 sparc64nbsd_fpregset_supplies_p (struct gdbarch *gdbarch, int regnum) { if (gdbarch_ptr_bit (gdbarch) == 32) return sparc32_fpregset_supplies_p (gdbarch, 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 sparc64nbsd_supply_pcb (struct regcache *regcache, struct pcb *pcb) { u_int64_t state; int regnum; /* The following is true for NetBSD 1.6.2: 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; } /* Provide a prototype to silence -Wmissing-prototypes. */ void _initialize_sparc64nbsd_nat (void); void _initialize_sparc64nbsd_nat (void) { sparc_supply_gregset = sparc64nbsd_supply_gregset; sparc_collect_gregset = sparc64nbsd_collect_gregset; sparc_supply_fpregset = sparc64nbsd_supply_fpregset; sparc_collect_fpregset = sparc64nbsd_collect_fpregset; sparc_gregset_supplies_p = sparc64nbsd_gregset_supplies_p; sparc_fpregset_supplies_p = sparc64nbsd_fpregset_supplies_p; /* We've got nothing to add to the generic SPARC target. */ add_target (sparc_target ()); /* Support debugging kernel virtual memory images. */ bsd_kvm_add_target (sparc64nbsd_supply_pcb); }