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Diffstat (limited to 'contrib/gdb/gdb/remote-vxmips.c')
-rw-r--r-- | contrib/gdb/gdb/remote-vxmips.c | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/contrib/gdb/gdb/remote-vxmips.c b/contrib/gdb/gdb/remote-vxmips.c new file mode 100644 index 0000000..55ba49b --- /dev/null +++ b/contrib/gdb/gdb/remote-vxmips.c @@ -0,0 +1,201 @@ +/* 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], &deprecated_registers[0], + 32 * MIPS_GREG_SIZE); + + /* Copy SR, LO, HI, and PC. */ + + bcopy (&mips_greg_packet[MIPS_R_SR], + &deprecated_registers[DEPRECATED_REGISTER_BYTE (PS_REGNUM)], MIPS_GREG_SIZE); + bcopy (&mips_greg_packet[MIPS_R_LO], + &deprecated_registers[DEPRECATED_REGISTER_BYTE (mips_regnum (current_gdbarch)->lo)], MIPS_GREG_SIZE); + bcopy (&mips_greg_packet[MIPS_R_HI], + &deprecated_registers[DEPRECATED_REGISTER_BYTE (mips_regnum (current_gdbarch)->hi)], MIPS_GREG_SIZE); + bcopy (&mips_greg_packet[MIPS_R_PC], + &deprecated_registers[DEPRECATED_REGISTER_BYTE (mips_regnum (current_gdbarch)->pc)], 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], + &deprecated_registers[DEPRECATED_REGISTER_BYTE (FP0_REGNUM)], + DEPRECATED_REGISTER_RAW_SIZE (FP0_REGNUM) * 32); + + /* Copy the floating point control/status register (fpcsr). */ + + bcopy (&mips_fpreg_packet[MIPS_R_FPCSR], + &deprecated_registers[DEPRECATED_REGISTER_BYTE (mips_regnum (current_gdbarch)->fp_control_status)], + DEPRECATED_REGISTER_RAW_SIZE (mips_regnum (current_gdbarch)->fp_control_status)); + } + else + { + memset (&deprecated_registers[DEPRECATED_REGISTER_BYTE (FP0_REGNUM)], + 0, DEPRECATED_REGISTER_RAW_SIZE (FP0_REGNUM) * 32); + memset (&deprecated_registers[DEPRECATED_REGISTER_BYTE (mips_regnum (current_gdbarch)->fp_control_status)], + 0, DEPRECATED_REGISTER_RAW_SIZE (mips_regnum (current_gdbarch)->fp_control_status)); + } + + /* Mark the register cache valid. */ + + deprecated_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 (&deprecated_registers[0], &mips_greg_packet[MIPS_R_GP0], + 32 * MIPS_GREG_SIZE); + + /* Copy SR, LO, HI, and PC. */ + + bcopy (&deprecated_registers[DEPRECATED_REGISTER_BYTE (PS_REGNUM)], + &mips_greg_packet[MIPS_R_SR], MIPS_GREG_SIZE); + bcopy (&deprecated_registers[DEPRECATED_REGISTER_BYTE (mips_regnum (current_gdbarch)->lo)], + &mips_greg_packet[MIPS_R_LO], MIPS_GREG_SIZE); + bcopy (&deprecated_registers[DEPRECATED_REGISTER_BYTE (mips_regnum (current_gdbarch)->hi)], + &mips_greg_packet[MIPS_R_HI], MIPS_GREG_SIZE); + bcopy (&deprecated_registers[DEPRECATED_REGISTER_BYTE (mips_regnum (current_gdbarch)->pc)], + &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 (&deprecated_registers[DEPRECATED_REGISTER_BYTE (FP0_REGNUM)], + &mips_fpreg_packet[MIPS_R_FP0], + DEPRECATED_REGISTER_RAW_SIZE (FP0_REGNUM) * 32); + + /* Copy the floating point control/status register (fpcsr). */ + + bcopy (&deprecated_registers[DEPRECATED_REGISTER_BYTE (mips_regnum (current_gdbarch)->fp_control_status)], + &mips_fpreg_packet[MIPS_R_FPCSR], + DEPRECATED_REGISTER_RAW_SIZE (mips_regnum (current_gdbarch)->fp_control_status)); + + net_write_registers (mips_fpreg_packet, MIPS_FPREG_PLEN, + PTRACE_SETFPREGS); + } +} |