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[/] [or1k/] [tags/] [VER_5_3/] [gdb-5.3/] [gdb/] [sparcnbsd-nat.c] - Rev 1181
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/* Native-dependent code for SPARC systems running NetBSD. Copyright 2002 Free Software Foundation, Inc. Contributed by Wasabi Systems, 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 2 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, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include "defs.h" #include "inferior.h" #include "regcache.h" #include "sparcnbsd-tdep.h" #include <sys/types.h> #include <sys/ptrace.h> #include <machine/reg.h> /* NOTE: We don't bother with any of the deferred_store nonsense; it makes things a lot more complicated than they need to be. */ /* Determine if PT_GETREGS fetches this register. */ static int getregs_supplies (int regno) { return (regno == PS_REGNUM || regno == PC_REGNUM || regno == NPC_REGNUM || regno == Y_REGNUM || (regno >= G0_REGNUM && regno <= G7_REGNUM) || (regno >= O0_REGNUM && regno <= O7_REGNUM) /* stack regs (handled by sparcnbsd_supply_reg) */ || (regno >= L0_REGNUM && regno <= I7_REGNUM)); } /* Determine if PT_GETFPREGS fetches this register. */ static int getfpregs_supplies (int regno) { return ((regno >= FP0_REGNUM && regno <= (FP0_REGNUM + 31)) || regno == FPS_REGNUM); } void fetch_inferior_registers (int regno) { /* We don't use deferred stores. */ if (deferred_stores) internal_error (__FILE__, __LINE__, "fetch_inferior_registers: deferred stores pending"); if (regno == -1 || getregs_supplies (regno)) { struct reg regs; if (ptrace (PT_GETREGS, PIDGET (inferior_ptid), (PTRACE_ARG3_TYPE) ®s, 0) == -1) perror_with_name ("Couldn't get registers"); sparcnbsd_supply_reg32 ((char *) ®s, regno); if (regno != -1) return; } if (regno == -1 || getfpregs_supplies (regno)) { struct fpreg fpregs; if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid), (PTRACE_ARG3_TYPE) &fpregs, 0) == -1) perror_with_name ("Couldn't get floating point registers"); sparcnbsd_supply_fpreg32 ((char *) &fpregs, regno); if (regno != -1) return; } } void store_inferior_registers (int regno) { /* We don't use deferred stores. */ if (deferred_stores) internal_error (__FILE__, __LINE__, "store_inferior_registers: deferred stores pending"); if (regno == -1 || getregs_supplies (regno)) { struct reg regs; if (ptrace (PT_GETREGS, PIDGET (inferior_ptid), (PTRACE_ARG3_TYPE) ®s, 0) == -1) perror_with_name ("Couldn't get registers"); sparcnbsd_fill_reg32 ((char *) ®s, regno); if (ptrace (PT_SETREGS, PIDGET (inferior_ptid), (PTRACE_ARG3_TYPE) ®s, 0) == -1) perror_with_name ("Couldn't write registers"); /* Deal with the stack regs. */ if (regno == -1 || regno == SP_REGNUM || (regno >= L0_REGNUM && regno <= I7_REGNUM)) { CORE_ADDR sp = read_register (SP_REGNUM); int i; char buf[4]; for (i = L0_REGNUM; i <= I7_REGNUM; i++) { if (regno == -1 || regno == SP_REGNUM || regno == i) { regcache_collect (i, buf); target_write_memory (sp + ((i - L0_REGNUM) * 4), buf, sizeof (buf)); } } } if (regno != -1) return; } if (regno == -1 || getfpregs_supplies (regno)) { struct fpreg fpregs; if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid), (PTRACE_ARG3_TYPE) &fpregs, 0) == -1) perror_with_name ("Couldn't get floating point registers"); sparcnbsd_fill_fpreg32 ((char *) &fpregs, regno); if (ptrace (PT_SETFPREGS, PIDGET (inferior_ptid), (PTRACE_ARG3_TYPE) &fpregs, 0) == -1) perror_with_name ("Couldn't write floating point registers"); if (regno != -1) return; } }
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