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Diffstat (limited to 'gdb/remote-vxsparc.c')
| -rw-r--r-- | gdb/remote-vxsparc.c | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/gdb/remote-vxsparc.c b/gdb/remote-vxsparc.c new file mode 100644 index 00000000000..068254240fa --- /dev/null +++ b/gdb/remote-vxsparc.c @@ -0,0 +1,196 @@ +/* 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); + } +} |