| /* MIPS-dependent portions of the RPC protocol |
| used with a VxWorks target |
| |
| Contributed by Wind River Systems. |
| |
| 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 <stdio.h> |
| #include "defs.h" |
| |
| #include "vx-share/regPacket.h" |
| #include "frame.h" |
| #include "inferior.h" |
| #include "target.h" |
| #include "gdbcore.h" |
| #include "command.h" |
| #include "symtab.h" |
| #include "symfile.h" |
| #include "regcache.h" |
| |
| #include "gdb_string.h" |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <sys/types.h> |
| #include <sys/time.h> |
| #include <sys/socket.h> |
| #include <rpc/rpc.h> |
| #include <sys/time.h> /* UTek's <rpc/rpc.h> doesn't #incl this */ |
| #include <netdb.h> |
| #include "vx-share/ptrace.h" |
| #include "vx-share/xdr_ptrace.h" |
| #include "vx-share/xdr_ld.h" |
| #include "vx-share/xdr_rdb.h" |
| #include "vx-share/dbgRpcLib.h" |
| |
| /* get rid of value.h if possible */ |
| #include <value.h> |
| #include <symtab.h> |
| |
| /* Flag set if target has fpu */ |
| |
| extern int target_has_fp; |
| |
| /* Generic register read/write routines in remote-vx.c. */ |
| |
| extern void net_read_registers (); |
| extern void net_write_registers (); |
| |
| /* Read a register or registers from the VxWorks target. |
| REGNO is the register to read, or -1 for all; currently, |
| it is ignored. FIXME look at regno to improve efficiency. */ |
| |
| void |
| vx_read_register (int regno) |
| { |
| char mips_greg_packet[MIPS_GREG_PLEN]; |
| char mips_fpreg_packet[MIPS_FPREG_PLEN]; |
| |
| /* Get general-purpose registers. */ |
| |
| net_read_registers (mips_greg_packet, MIPS_GREG_PLEN, PTRACE_GETREGS); |
| |
| /* this code copies the registers obtained by RPC |
| stored in a structure(s) like this : |
| |
| Register(s) Offset(s) |
| gp 0-31 0x00 |
| hi 0x80 |
| lo 0x84 |
| sr 0x88 |
| pc 0x8c |
| |
| into a stucture like this: |
| |
| 0x00 GP 0-31 |
| 0x80 SR |
| 0x84 LO |
| 0x88 HI |
| 0x8C BAD --- Not available currently |
| 0x90 CAUSE --- Not available currently |
| 0x94 PC |
| 0x98 FP 0-31 |
| 0x118 FCSR |
| 0x11C FIR --- Not available currently |
| 0x120 FP --- Not available currently |
| |
| structure is 0x124 (292) bytes in length */ |
| |
| /* Copy the general registers. */ |
| |
| bcopy (&mips_greg_packet[MIPS_R_GP0], ®isters[0], 32 * MIPS_GREG_SIZE); |
| |
| /* Copy SR, LO, HI, and PC. */ |
| |
| bcopy (&mips_greg_packet[MIPS_R_SR], |
| ®isters[REGISTER_BYTE (PS_REGNUM)], MIPS_GREG_SIZE); |
| bcopy (&mips_greg_packet[MIPS_R_LO], |
| ®isters[REGISTER_BYTE (LO_REGNUM)], MIPS_GREG_SIZE); |
| bcopy (&mips_greg_packet[MIPS_R_HI], |
| ®isters[REGISTER_BYTE (HI_REGNUM)], MIPS_GREG_SIZE); |
| bcopy (&mips_greg_packet[MIPS_R_PC], |
| ®isters[REGISTER_BYTE (PC_REGNUM)], MIPS_GREG_SIZE); |
| |
| /* If the target has floating point registers, fetch them. |
| Otherwise, zero the floating point register values in |
| registers[] for good measure, even though we might not |
| need to. */ |
| |
| if (target_has_fp) |
| { |
| net_read_registers (mips_fpreg_packet, MIPS_FPREG_PLEN, |
| PTRACE_GETFPREGS); |
| |
| /* Copy the floating point registers. */ |
| |
| bcopy (&mips_fpreg_packet[MIPS_R_FP0], |
| ®isters[REGISTER_BYTE (FP0_REGNUM)], |
| REGISTER_RAW_SIZE (FP0_REGNUM) * 32); |
| |
| /* Copy the floating point control/status register (fpcsr). */ |
| |
| bcopy (&mips_fpreg_packet[MIPS_R_FPCSR], |
| ®isters[REGISTER_BYTE (FCRCS_REGNUM)], |
| REGISTER_RAW_SIZE (FCRCS_REGNUM)); |
| } |
| else |
| { |
| bzero ((char *) ®isters[REGISTER_BYTE (FP0_REGNUM)], |
| REGISTER_RAW_SIZE (FP0_REGNUM) * 32); |
| bzero ((char *) ®isters[REGISTER_BYTE (FCRCS_REGNUM)], |
| REGISTER_RAW_SIZE (FCRCS_REGNUM)); |
| } |
| |
| /* Mark the register cache valid. */ |
| |
| registers_fetched (); |
| } |
| |
| /* Store a register or registers into the VxWorks target. |
| REGNO is the register to store, or -1 for all; currently, |
| it is ignored. FIXME look at regno to improve efficiency. */ |
| |
| vx_write_register (int regno) |
| { |
| char mips_greg_packet[MIPS_GREG_PLEN]; |
| char mips_fpreg_packet[MIPS_FPREG_PLEN]; |
| |
| /* Store general registers. */ |
| |
| bcopy (®isters[0], &mips_greg_packet[MIPS_R_GP0], 32 * MIPS_GREG_SIZE); |
| |
| /* Copy SR, LO, HI, and PC. */ |
| |
| bcopy (®isters[REGISTER_BYTE (PS_REGNUM)], |
| &mips_greg_packet[MIPS_R_SR], MIPS_GREG_SIZE); |
| bcopy (®isters[REGISTER_BYTE (LO_REGNUM)], |
| &mips_greg_packet[MIPS_R_LO], MIPS_GREG_SIZE); |
| bcopy (®isters[REGISTER_BYTE (HI_REGNUM)], |
| &mips_greg_packet[MIPS_R_HI], MIPS_GREG_SIZE); |
| bcopy (®isters[REGISTER_BYTE (PC_REGNUM)], |
| &mips_greg_packet[MIPS_R_PC], MIPS_GREG_SIZE); |
| |
| net_write_registers (mips_greg_packet, MIPS_GREG_PLEN, PTRACE_SETREGS); |
| |
| /* Store floating point registers if the target has them. */ |
| |
| if (target_has_fp) |
| { |
| /* Copy the floating point data registers. */ |
| |
| bcopy (®isters[REGISTER_BYTE (FP0_REGNUM)], |
| &mips_fpreg_packet[MIPS_R_FP0], |
| REGISTER_RAW_SIZE (FP0_REGNUM) * 32); |
| |
| /* Copy the floating point control/status register (fpcsr). */ |
| |
| bcopy (®isters[REGISTER_BYTE (FCRCS_REGNUM)], |
| &mips_fpreg_packet[MIPS_R_FPCSR], |
| REGISTER_RAW_SIZE (FCRCS_REGNUM)); |
| |
| net_write_registers (mips_fpreg_packet, MIPS_FPREG_PLEN, |
| PTRACE_SETFPREGS); |
| } |
| } |