| /* 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 "wait.h" |
| #include "target.h" |
| #include "gdbcore.h" |
| #include "command.h" |
| #include "symtab.h" |
| #include "symfile.h" /* for struct complaint */ |
| |
| #include "gdb_string.h" |
| #include <errno.h> |
| #include <signal.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 (regno) |
| 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 (regno) |
| 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); |
| } |
| } |