/* Host-dependent code for Sun-3 for GDB, the GNU debugger. Copyright 1986, 1987, 1989, 1991, 1992 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 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 "gdbcore.h" #include <sys/ptrace.h> #define KERNEL /* To get floating point reg definitions */ #include <machine/reg.h> static void fetch_core_registers PARAMS ((char *, unsigned, int, CORE_ADDR)); void fetch_inferior_registers (regno) int regno; { struct regs inferior_registers; #ifdef FP0_REGNUM struct fp_status inferior_fp_registers; #endif extern char registers[]; registers_fetched (); ptrace (PTRACE_GETREGS, inferior_pid, (PTRACE_ARG3_TYPE) &inferior_registers); #ifdef FP0_REGNUM ptrace (PTRACE_GETFPREGS, inferior_pid, (PTRACE_ARG3_TYPE) &inferior_fp_registers); #endif memcpy (registers, &inferior_registers, 16 * 4); #ifdef FP0_REGNUM memcpy (®isters[REGISTER_BYTE (FP0_REGNUM)], &inferior_fp_registers, sizeof inferior_fp_registers.fps_regs); #endif *(int *)®isters[REGISTER_BYTE (PS_REGNUM)] = inferior_registers.r_ps; *(int *)®isters[REGISTER_BYTE (PC_REGNUM)] = inferior_registers.r_pc; #ifdef FP0_REGNUM memcpy (®isters[REGISTER_BYTE (FPC_REGNUM)], &inferior_fp_registers.fps_control, sizeof inferior_fp_registers - sizeof inferior_fp_registers.fps_regs); #endif } /* Store our register values back into the inferior. If REGNO is -1, do this for all registers. Otherwise, REGNO specifies which register (so we can save time). */ void store_inferior_registers (regno) int regno; { struct regs inferior_registers; #ifdef FP0_REGNUM struct fp_status inferior_fp_registers; #endif extern char registers[]; memcpy (&inferior_registers, registers, 16 * 4); #ifdef FP0_REGNUM memcpy (&inferior_fp_registers, ®isters[REGISTER_BYTE (FP0_REGNUM)], sizeof inferior_fp_registers.fps_regs); #endif inferior_registers.r_ps = *(int *)®isters[REGISTER_BYTE (PS_REGNUM)]; inferior_registers.r_pc = *(int *)®isters[REGISTER_BYTE (PC_REGNUM)]; #ifdef FP0_REGNUM memcpy (&inferior_fp_registers.fps_control, ®isters[REGISTER_BYTE (FPC_REGNUM)], sizeof inferior_fp_registers - sizeof inferior_fp_registers.fps_regs); #endif ptrace (PTRACE_SETREGS, inferior_pid, (PTRACE_ARG3_TYPE) &inferior_registers); #if FP0_REGNUM ptrace (PTRACE_SETFPREGS, inferior_pid, (PTRACE_ARG3_TYPE) &inferior_fp_registers); #endif } /* All of this stuff is only relevant if both host and target are sun3. */ /* Machine-dependent code for pulling registers out of a Sun-3 core file. */ static void fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr) char *core_reg_sect; unsigned core_reg_size; int which; CORE_ADDR reg_addr; /* Unused in this version */ { extern char registers[]; struct regs *regs = (struct regs *) core_reg_sect; if (which == 0) { if (core_reg_size < sizeof (struct regs)) error ("Can't find registers in core file"); memcpy (registers, (char *)regs, 16 * 4); supply_register (PS_REGNUM, (char *)®s->r_ps); supply_register (PC_REGNUM, (char *)®s->r_pc); } else if (which == 2) { #define fpustruct ((struct fpu *) core_reg_sect) if (core_reg_size >= sizeof (struct fpu)) { #ifdef FP0_REGNUM memcpy (®isters[REGISTER_BYTE (FP0_REGNUM)], fpustruct->f_fpstatus.fps_regs, sizeof fpustruct->f_fpstatus.fps_regs); memcpy (®isters[REGISTER_BYTE (FPC_REGNUM)], &fpustruct->f_fpstatus.fps_control, sizeof fpustruct->f_fpstatus - sizeof fpustruct->f_fpstatus.fps_regs); #endif } else fprintf_unfiltered (gdb_stderr, "Couldn't read float regs from core file\n"); } } /* Register that we are able to handle sun3 core file formats. FIXME: is this really bfd_target_unknown_flavour? */ static struct core_fns sun3_core_fns = { bfd_target_unknown_flavour, fetch_core_registers, NULL }; void _initialize_core_sun3 () { add_core_fns (&sun3_core_fns); }