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74 lines
2.2 KiB
C
74 lines
2.2 KiB
C
/* Native-dependent code for NetBSD/sparc.
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Copyright (C) 2002-2017 Free Software Foundation, Inc.
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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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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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(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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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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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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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "regcache.h"
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#include "target.h"
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#include "sparc-tdep.h"
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#include "sparc-nat.h"
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/* Support for debugging kernel virtual memory images. */
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#include <sys/types.h>
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#include <machine/pcb.h>
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#include "bsd-kvm.h"
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static int
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sparc32nbsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
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{
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/* The following is true for NetBSD 1.6.2:
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The pcb contains %sp, %pc, %psr and %wim. From this information
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we reconstruct the register state as it would look when we just
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returned from cpu_switch(). */
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/* The stack pointer shouldn't be zero. */
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if (pcb->pcb_sp == 0)
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return 0;
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regcache_raw_supply (regcache, SPARC_SP_REGNUM, &pcb->pcb_sp);
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regcache_raw_supply (regcache, SPARC_O7_REGNUM, &pcb->pcb_pc);
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regcache_raw_supply (regcache, SPARC32_PSR_REGNUM, &pcb->pcb_psr);
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regcache_raw_supply (regcache, SPARC32_WIM_REGNUM, &pcb->pcb_wim);
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regcache_raw_supply (regcache, SPARC32_PC_REGNUM, &pcb->pcb_pc);
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sparc_supply_rwindow (regcache, pcb->pcb_sp, -1);
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return 1;
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}
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/* Provide a prototype to silence -Wmissing-prototypes. */
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void _initialize_sparcnbsd_nat (void);
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void
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_initialize_sparcnbsd_nat (void)
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{
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sparc_gregmap = &sparc32nbsd_gregmap;
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sparc_fpregmap = &sparc32_bsd_fpregmap;
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/* We've got nothing to add to the generic SPARC target. */
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add_target (sparc_target ());
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/* Support debugging kernel virtual memory images. */
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bsd_kvm_add_target (sparc32nbsd_supply_pcb);
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}
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