f334d93656
removed on HEAD, but which are part of the GDB 6.1.1 import. This makes HEAD identical to the vendor branch, for better or for worse.
129 lines
3.7 KiB
C
129 lines
3.7 KiB
C
/* SPARC-specific portions of the RPC protocol for VxWorks.
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Contributed by Wind River Systems.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "defs.h"
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#include "regcache.h"
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#include "gdb_string.h"
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#include "sparc-tdep.h"
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#include "vx-share/ptrace.h"
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#include "vx-share/regPacket.h"
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#define SPARC_R_G1 (SPARC_R_G0 + SPARC_GREG_SIZE)
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const struct sparc_gregset vxsparc_gregset =
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{
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SPARC_R_PSR, /* %psr */
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SPARC_R_PC, /* %pc */
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SPARC_R_NPC, /* %npc */
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SPARC_R_Y, /* %y */
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SPARC_R_WIM, /* %wim */
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SPARC_R_TBR, /* %tbr */
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SPARC_R_G1, /* %g1 */
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SPARC_R_I0 /* %l0 */
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};
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/* Flag set if target has an FPU. */
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extern int target_has_fp;
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/* Generic register read/write routines in remote-vx.c. */
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extern void net_read_registers ();
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extern void net_write_registers ();
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/* Read a register or registers from the VxWorks target. REGNUM is
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the register to read, or -1 for all; currently, it is ignored.
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FIXME: Look at REGNUM to improve efficiency. */
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void
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vx_read_register (int regnum)
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{
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struct regcache *regcache = current_regcache;
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char gregs[SPARC_GREG_PLEN];
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char fpregs[SPARC_FPREG_PLEN];
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CORE_ADDR sp;
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/* Get the general-purpose registers. */
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net_read_registers (gregs, SPARC_GREG_PLEN, PTRACE_GETREGS);
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sparc32_supply_gregset (&vxsparc_gregset, regcache, -1, gregs);
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/* If the target has floating-point registers, fetch them.
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Otherwise, zero the floating-point register values in GDB's
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register cache for good measure, even though we might not need
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to. */
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if (target_has_fp)
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net_read_registers (fpregs, SPARC_FPREG_PLEN, PTRACE_GETFPREGS);
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else
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memset (fpregs, 0, SPARC_FPREG_PLEN);
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sparc32_supply_fpregset (regcache, -1, fpregs);
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}
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/* Store a register or registers into the VxWorks target. REGNUM is
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the register to store, or -1 for all; currently, it is ignored.
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FIXME: Look at REGNUM to improve efficiency. */
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void
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vx_write_register (int regnum)
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{
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struct regcache *regcache = current_regcache;
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char gregs[SPARC_GREG_PLEN];
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char fpregs[SPARC_FPREG_PLEN];
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int gregs_p = 1;
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int fpregs_p = 1;
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CORE_ADDR sp;
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if (regnum != -1)
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{
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if ((SPARC_G0_REGNUM <= regnum && regnum <= SPARC_I7_REGNUM)
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|| (SPARC32_Y_REGNUM <= regnum && regnum <= SPARC32_NPC_REGNUM))
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fpregs_p = 0;
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else
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gregs_p = 0;
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}
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/* Store the general-purpose registers. */
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if (gregs_p)
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{
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sparc32_collect_gregset (&vxsparc_gregset, regcache, -1, gregs);
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net_write_registers (gregs, SPARC_GREG_PLEN, PTRACE_SETREGS);
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/* Deal with the stack regs. */
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if (regnum == -1 || regnum == SPARC_SP_REGNUM
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|| (regnum >= SPARC_L0_REGNUM && regnum <= SPARC_I7_REGNUM))
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{
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ULONGEST sp;
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regcache_cooked_read_unsigned (regcache, SPARC_SP_REGNUM, &sp);
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sparc_collect_rwindow (regcache, sp, regnum);
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}
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}
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/* Store the floating-point registers if the target has them. */
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if (fpregs_p && target_has_fp)
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{
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sparc32_collect_fpregset (regcache, -1, fpregs);
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net_write_registers (fpregs, SPARC_FPREG_PLEN, PTRACE_SETFPREGS);
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}
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}
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