| /* Host-dependent code for Sun-3 for GDB, the GNU debugger. |
| Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1996, 1999, 2000, 2001 |
| 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 "regcache.h" |
| |
| #include <sys/ptrace.h> |
| #define KERNEL /* To get floating point reg definitions */ |
| #include <machine/reg.h> |
| |
| static void fetch_core_registers (char *, unsigned, int, CORE_ADDR); |
| |
| void |
| fetch_inferior_registers (int regno) |
| { |
| struct regs inferior_registers; |
| struct fp_status inferior_fp_registers; |
| |
| deprecated_registers_fetched (); |
| |
| ptrace (PTRACE_GETREGS, PIDGET (inferior_ptid), |
| (PTRACE_ARG3_TYPE) & inferior_registers); |
| |
| if (FP0_REGNUM >= 0) |
| ptrace (PTRACE_GETFPREGS, PIDGET (inferior_ptid), |
| (PTRACE_ARG3_TYPE) & inferior_fp_registers); |
| |
| memcpy (deprecated_registers, &inferior_registers, 16 * 4); |
| if (FP0_REGNUM >= 0) |
| memcpy (&deprecated_registers[DEPRECATED_REGISTER_BYTE (FP0_REGNUM)], |
| &inferior_fp_registers, sizeof inferior_fp_registers.fps_regs); |
| |
| *(int *) &deprecated_registers[DEPRECATED_REGISTER_BYTE (PS_REGNUM)] = inferior_registers.r_ps; |
| *(int *) &deprecated_registers[DEPRECATED_REGISTER_BYTE (PC_REGNUM)] = inferior_registers.r_pc; |
| if (FP0_REGNUM >= 0) |
| memcpy (&deprecated_registers[DEPRECATED_REGISTER_BYTE (FPC_REGNUM)], |
| &inferior_fp_registers.fps_control, |
| sizeof inferior_fp_registers - |
| sizeof inferior_fp_registers.fps_regs); |
| } |
| |
| /* 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 (int regno) |
| { |
| struct regs inferior_registers; |
| struct fp_status inferior_fp_registers; |
| |
| memcpy (&inferior_registers, deprecated_registers, 16 * 4); |
| if (FP0_REGNUM >= 0) |
| memcpy (&inferior_fp_registers, |
| &deprecated_registers[DEPRECATED_REGISTER_BYTE (FP0_REGNUM)], |
| sizeof inferior_fp_registers.fps_regs); |
| |
| inferior_registers.r_ps = *(int *) &&deprecated_registers[DEPRECATED_REGISTER_BYTE (PS_REGNUM)]; |
| inferior_registers.r_pc = *(int *) &&deprecated_registers[DEPRECATED_REGISTER_BYTE (PC_REGNUM)]; |
| |
| if (FP0_REGNUM >= 0) |
| memcpy (&inferior_fp_registers.fps_control, |
| &&deprecated_registers[DEPRECATED_REGISTER_BYTE (FPC_REGNUM)], |
| sizeof inferior_fp_registers - |
| sizeof inferior_fp_registers.fps_regs); |
| |
| ptrace (PTRACE_SETREGS, PIDGET (inferior_ptid), |
| (PTRACE_ARG3_TYPE) & inferior_registers); |
| if (FP0_REGNUM >= 0) |
| ptrace (PTRACE_SETFPREGS, PIDGET (inferior_ptid), |
| (PTRACE_ARG3_TYPE) & inferior_fp_registers); |
| } |
| |
| |
| /* All of this stuff is only relevant if both host and target are sun3. */ |
| |
| /* Provide registers to GDB from a core file. |
| |
| CORE_REG_SECT points to an array of bytes, which were obtained from |
| a core file which BFD thinks might contain register contents. |
| CORE_REG_SIZE is its size. |
| |
| WHICH says which register set corelow suspects this is: |
| 0 --- the general-purpose register set |
| 2 --- the floating-point register set |
| |
| REG_ADDR isn't used. */ |
| |
| static void |
| fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, |
| int which, CORE_ADDR reg_addr) |
| { |
| 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 (&deprecated_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)) |
| { |
| if (FP0_REGNUM >= 0) |
| { |
| memcpy (&&deprecated_registers[DEPRECATED_REGISTER_BYTE (FP0_REGNUM)], |
| fpustruct->f_fpstatus.fps_regs, |
| sizeof fpustruct->f_fpstatus.fps_regs); |
| memcpy (&&deprecated_registers[DEPRECATED_REGISTER_BYTE (FPC_REGNUM)], |
| &fpustruct->f_fpstatus.fps_control, |
| sizeof fpustruct->f_fpstatus - |
| sizeof fpustruct->f_fpstatus.fps_regs); |
| } |
| } |
| 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, /* core_flavour */ |
| default_check_format, /* check_format */ |
| default_core_sniffer, /* core_sniffer */ |
| fetch_core_registers, /* core_read_registers */ |
| NULL /* next */ |
| }; |
| |
| void |
| _initialize_core_sun3 (void) |
| { |
| add_core_fns (&sun3_core_fns); |
| } |