6872cfda60
* am29k-tdep.c: Lint from DECstation compiler. * mem-break.c: Restore test of BREAKPOINT size that Fred removed. As the man page says, "Sometimes you just can't get lint to shut up". That doesn't mean you should blow away the code it won't shut up about. * mips-xdep.c: Revise stubbing-out of code until Rich cleans it up over the next few weeks. Make mips x 29k build. * tm-29k.h (CALL_DUMMY): Make it work on cross-endian hosts. (FIX_CALL_DUMMY): Comment in the patching of the breakpoint, but leave it as a comment because the breakpoint instruction is not easily accessible at this moment (it's static, and if we define one here, it goes into every file compiled).
153 lines
3.8 KiB
C
153 lines
3.8 KiB
C
/* Low level MIPS interface to ptrace, for GDB when running under Unix.
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Copyright 1988, 1989, 1991, 1992 Free Software Foundation, Inc.
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Contributed by Alessandro Forin(af@cs.cmu.edu) at CMU
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and by Per Bothner(bothner@cs.wisc.edu) at U.Wisconsin.
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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., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "defs.h"
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#include "inferior.h"
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#include "gdbcore.h"
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/* For now we stub this out; sgi core format is super-hairy (and completely
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different in the new release).
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For most mips systems, this function is defined in coredep.c. */
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#if defined(sgi)
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void
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fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr)
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char *core_reg_sect;
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unsigned core_reg_size;
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int which;
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unsigned int reg_addr;
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{
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return;
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}
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#endif
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/* Access to the inferior is only good for native systems, not cross.
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I am not sure why this is stubbed out on SGI... --gnu@cygnus.com */
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#if defined(sgi) || !defined(GDB_TARGET_IS_MIPS)
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/* ARGSUSED */
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void
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fetch_inferior_registers (regno)
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int regno;
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{
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return;
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}
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/* ARGSUSED */
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void
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store_inferior_registers (regno)
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int regno;
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{
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return;
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}
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#else
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/* Map gdb internal register number to ptrace address. */
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#define REGISTER_PTRACE_ADDR(regno) \
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(regno < 32 ? regno \
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: regno == PC_REGNUM ? 96 \
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: regno == CAUSE_REGNUM ? 97 \
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: regno == HI_REGNUM ? 98 \
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: regno == LO_REGNUM ? 99 \
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: regno == FCRCS_REGNUM ? 100 \
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: regno == FCRIR_REGNUM ? 101 \
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: regno >= FP0_REGNUM ? regno - (FP0_REGNUM-32)\
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: 0)
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/* Get all registers from the inferior */
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void
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fetch_inferior_registers (regno)
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int regno;
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{
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register unsigned int regaddr;
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char buf[MAX_REGISTER_RAW_SIZE];
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register int i;
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registers_fetched ();
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for (regno = 1; regno < NUM_REGS; regno++)
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{
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regaddr = REGISTER_PTRACE_ADDR (regno);
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for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int))
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{
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*(int *) &buf[i] = ptrace (3, inferior_pid,
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(PTRACE_ARG3_TYPE) regaddr, 0);
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regaddr += sizeof (int);
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}
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supply_register (regno, buf);
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}
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}
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/* Store our register values back into the inferior.
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If REGNO is -1, do this for all registers.
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Otherwise, REGNO specifies which register (so we can save time). */
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void
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store_inferior_registers (regno)
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int regno;
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{
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register unsigned int regaddr;
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char buf[80];
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if (regno == 0)
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return;
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if (regno > 0)
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{
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regaddr = REGISTER_PTRACE_ADDR (regno);
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errno = 0;
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ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
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read_register (regno));
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if (errno != 0)
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{
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sprintf (buf, "writing register number %d", regno);
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perror_with_name (buf);
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}
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}
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else
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{
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for (regno = 0; regno < NUM_REGS; regno++)
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{
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if (regno == ZERO_REGNUM || regno == PS_REGNUM
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|| regno == BADVADDR_REGNUM || regno == CAUSE_REGNUM
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|| regno == FCRIR_REGNUM || regno == FP_REGNUM
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|| (regno >= FIRST_EMBED_REGNUM && regno <= LAST_EMBED_REGNUM))
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continue;
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regaddr = register_addr (regno, 1);
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errno = 0;
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ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
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read_register (regno));
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if (errno != 0)
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{
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sprintf (buf, "writing all regs, number %d", regno);
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perror_with_name (buf);
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}
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}
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}
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}
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#endif /* sgi */
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