| /* 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; |
| } |
| } |