| /* Native-dependent code for Alpha BSD's. |
| Copyright 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 "regcache.h" |
| |
| #include <sys/types.h> |
| #include <sys/ptrace.h> |
| #include <machine/reg.h> |
| |
| #ifdef HAVE_SYS_PROCFS_H |
| #include <sys/procfs.h> |
| #endif |
| |
| #ifndef HAVE_GREGSET_T |
| typedef struct reg gregset_t; |
| #endif |
| |
| #ifndef HAVE_FPREGSET_T |
| typedef struct fpreg fpregset_t; |
| #endif |
| |
| #include "gregset.h" |
| |
| /* Number of general-purpose registers. */ |
| #define NUM_GREGS 32 |
| |
| /* Number of floating point registers. */ |
| #define NUM_FPREGS 31 |
| |
| |
| /* Transfering the registers between GDB, inferiors and core files. */ |
| |
| /* Fill GDB's register array with the general-purpose register values |
| in *GREGSETP. */ |
| |
| void |
| supply_gregset (gregset_t *gregsetp) |
| { |
| int i; |
| |
| for (i = 0; i < NUM_GREGS; i++) |
| { |
| if (CANNOT_FETCH_REGISTER (i)) |
| supply_register (i, NULL); |
| else |
| supply_register (i, (char *) &gregsetp->r_regs[i]); |
| } |
| |
| /* The PC travels in the R_ZERO slot. */ |
| supply_register (PC_REGNUM, (char *) &gregsetp->r_regs[R_ZERO]); |
| } |
| |
| /* Fill register REGNO (if it is a general-purpose register) in |
| *GREGSETPS with the value in GDB's register array. If REGNO is -1, |
| do this for all registers. */ |
| |
| void |
| fill_gregset (gregset_t *gregsetp, int regno) |
| { |
| int i; |
| |
| for (i = 0; i < NUM_GREGS; i++) |
| if ((regno == -1 || regno == i) && ! CANNOT_STORE_REGISTER (i)) |
| memcpy (&gregsetp->r_regs[i], ®isters[REGISTER_BYTE (i)], |
| REGISTER_RAW_SIZE (i)); |
| |
| /* The PC travels in the R_ZERO slot. */ |
| if (regno == -1 || regno == PC_REGNUM) |
| memcpy (&gregsetp->r_regs[R_ZERO], ®isters[REGISTER_BYTE (PC_REGNUM)], |
| REGISTER_RAW_SIZE (PC_REGNUM)); |
| } |
| |
| /* Fill GDB's register array with the floating-point register values |
| in *FPREGSETP. */ |
| |
| void |
| supply_fpregset (fpregset_t *fpregsetp) |
| { |
| int i; |
| |
| for (i = FP0_REGNUM; i < FP0_REGNUM + NUM_FPREGS; i++) |
| { |
| if (CANNOT_FETCH_REGISTER (i)) |
| supply_register (i, NULL); |
| else |
| supply_register (i, (char *) &fpregsetp->fpr_regs[i - FP0_REGNUM]); |
| } |
| |
| supply_register (FPCR_REGNUM, (char *) &fpregsetp->fpr_cr); |
| } |
| |
| /* Fill register REGNO (if it is a floating-point register) in |
| *FPREGSETP with the value in GDB's register array. If REGNO is -1, |
| do this for all registers. */ |
| |
| void |
| fill_fpregset (fpregset_t *fpregsetp, int regno) |
| { |
| int i; |
| |
| for (i = FP0_REGNUM; i < FP0_REGNUM + NUM_FPREGS; i++) |
| if ((regno == -1 || regno == i) && ! CANNOT_STORE_REGISTER (i)) |
| memcpy (&fpregsetp->fpr_regs[i - FP0_REGNUM], |
| ®isters[REGISTER_BYTE (i)], REGISTER_RAW_SIZE (i)); |
| |
| if (regno == -1 || regno == FPCR_REGNUM) |
| memcpy (&fpregsetp->fpr_cr, ®isters[REGISTER_BYTE (FPCR_REGNUM)], |
| REGISTER_RAW_SIZE (FPCR_REGNUM)); |
| } |
| |
| /* Fetch register REGNO from the inferior. If REGNO is -1, do this |
| for all registers (including the floating point registers). */ |
| |
| void |
| fetch_inferior_registers (int regno) |
| { |
| gregset_t gregs; |
| |
| if (ptrace (PT_GETREGS, PIDGET (inferior_ptid), |
| (PTRACE_ARG3_TYPE) &gregs, 0) == -1) |
| perror_with_name ("Couldn't get registers"); |
| |
| supply_gregset (&gregs); |
| |
| if (regno == -1 || regno >= FP0_REGNUM) |
| { |
| fpregset_t fpregs; |
| |
| if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid), |
| (PTRACE_ARG3_TYPE) &fpregs, 0) == -1) |
| perror_with_name ("Couldn't get floating point status"); |
| |
| supply_fpregset (&fpregs); |
| } |
| |
| /* Reset virtual frame pointer. */ |
| supply_register (FP_REGNUM, NULL); |
| } |
| |
| /* Store register REGNO back into the inferior. If REGNO is -1, do |
| this for all registers (including the floating point registers). */ |
| |
| void |
| store_inferior_registers (int regno) |
| { |
| gregset_t gregs; |
| |
| if (ptrace (PT_GETREGS, PIDGET (inferior_ptid), |
| (PTRACE_ARG3_TYPE) &gregs, 0) == -1) |
| perror_with_name ("Couldn't get registers"); |
| |
| fill_gregset (&gregs, regno); |
| |
| if (ptrace (PT_SETREGS, PIDGET (inferior_ptid), |
| (PTRACE_ARG3_TYPE) &gregs, 0) == -1) |
| perror_with_name ("Couldn't write registers"); |
| |
| if (regno == -1 || regno >= FP0_REGNUM) |
| { |
| fpregset_t fpregs; |
| |
| if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid), |
| (PTRACE_ARG3_TYPE) &fpregs, 0) == -1) |
| perror_with_name ("Couldn't get floating point status"); |
| |
| fill_fpregset (&fpregs, regno); |
| |
| if (ptrace (PT_SETFPREGS, PIDGET (inferior_ptid), |
| (PTRACE_ARG3_TYPE) &fpregs, 0) == -1) |
| perror_with_name ("Couldn't write floating point status"); |
| } |
| } |