/* sparc-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" /* for struct complaint */ #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> #ifdef _AIX /* IBM claims "void *malloc()" not char * */ #define malloc bogon_malloc #endif #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; /* sparc floating point format descriptor, from "sparc-tdep.c." */ extern struct ext_format ext_format_sparc; /* 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 sparc_greg_packet[SPARC_GREG_PLEN]; char sparc_fpreg_packet[SPARC_FPREG_PLEN]; CORE_ADDR sp; /* Get general-purpose registers. When copying values into registers [], don't assume that a location in registers [] is properly aligned for the target data type. */ net_read_registers (sparc_greg_packet, SPARC_GREG_PLEN, PTRACE_GETREGS); /* Now copy the register values into registers[]. Note that this code depends on the ordering of the REGNUMs as defined in "tm-sparc.h". */ bcopy (&sparc_greg_packet[SPARC_R_G0], ®isters[REGISTER_BYTE (G0_REGNUM)], 32 * SPARC_GREG_SIZE); bcopy (&sparc_greg_packet[SPARC_R_Y], ®isters[REGISTER_BYTE (Y_REGNUM)], 6 * SPARC_GREG_SIZE); /* Now write the local and in registers to the register window spill area in the frame. VxWorks does not do this for the active frame automatically; it greatly simplifies debugging (FRAME_FIND_SAVED_REGS, in particular, depends on this). */ sp = extract_address (®isters[REGISTER_BYTE (SP_REGNUM)], REGISTER_RAW_SIZE (CORE_ADDR)); write_memory (sp, ®isters[REGISTER_BYTE (L0_REGNUM)], 16 * REGISTER_RAW_SIZE (L0_REGNUM)); /* 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 (sparc_fpreg_packet, SPARC_FPREG_PLEN, PTRACE_GETFPREGS); bcopy (&sparc_fpreg_packet[SPARC_R_FP0], ®isters[REGISTER_BYTE (FP0_REGNUM)], 32 * SPARC_FPREG_SIZE); bcopy (&sparc_fpreg_packet[SPARC_R_FSR], ®isters[REGISTER_BYTE (FPS_REGNUM)], 1 * SPARC_FPREG_SIZE); } else { bzero (®isters[REGISTER_BYTE (FP0_REGNUM)], 32 * SPARC_FPREG_SIZE); bzero (®isters[REGISTER_BYTE (FPS_REGNUM)], 1 * SPARC_FPREG_SIZE); } /* 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. */ void vx_write_register (int regno) { char sparc_greg_packet[SPARC_GREG_PLEN]; char sparc_fpreg_packet[SPARC_FPREG_PLEN]; int in_gp_regs; int in_fp_regs; CORE_ADDR sp; /* Store general purpose registers. When copying values from registers [], don't assume that a location in registers [] is properly aligned for the target data type. */ in_gp_regs = 1; in_fp_regs = 1; if (regno >= 0) { if ((G0_REGNUM <= regno && regno <= I7_REGNUM) || (Y_REGNUM <= regno && regno <= NPC_REGNUM)) in_fp_regs = 0; else in_gp_regs = 0; } if (in_gp_regs) { bcopy (®isters[REGISTER_BYTE (G0_REGNUM)], &sparc_greg_packet[SPARC_R_G0], 32 * SPARC_GREG_SIZE); bcopy (®isters[REGISTER_BYTE (Y_REGNUM)], &sparc_greg_packet[SPARC_R_Y], 6 * SPARC_GREG_SIZE); net_write_registers (sparc_greg_packet, SPARC_GREG_PLEN, PTRACE_SETREGS); /* If this is a local or in register, or we're storing all registers, update the register window spill area. */ if (regno < 0 || (L0_REGNUM <= regno && regno <= I7_REGNUM)) { sp = extract_address (®isters[REGISTER_BYTE (SP_REGNUM)], REGISTER_RAW_SIZE (CORE_ADDR)); write_memory (sp, ®isters[REGISTER_BYTE (L0_REGNUM)], 16 * REGISTER_RAW_SIZE (L0_REGNUM)); } } /* Store floating point registers if the target has them. */ if (in_fp_regs && target_has_fp) { bcopy (®isters[REGISTER_BYTE (FP0_REGNUM)], &sparc_fpreg_packet[SPARC_R_FP0], 32 * SPARC_FPREG_SIZE); bcopy (®isters[REGISTER_BYTE (FPS_REGNUM)], &sparc_fpreg_packet[SPARC_R_FSR], 1 * SPARC_FPREG_SIZE); net_write_registers (sparc_fpreg_packet, SPARC_FPREG_PLEN, PTRACE_SETFPREGS); } }