199b2450f6
Change all references to stdout/stderr to gdb_stdout/gdb_stderr. Replace all calls to stdio output functions with calls to corresponding _unfiltered functions (`fprintf_unfiltered') Replaced calls to fopen for output to gdb_fopen. Added sufficient goo to utils.c and defs.h to make the above work. The net effect is that stdio output functions are only directly used in utils.c. Elsewhere, the _unfiltered and _filtered functions and GDB_FILE type are used. In the near future, GDB_FILE will stop being equivalant to FILE. The semantics of some commands has changed in a very subtle way: called in the right context, they may cause new occurences of prompt_for_continue() behavior. The testsuite doesn't notice anything like this, though. Please respect this change by not reintroducing stdio output dependencies in the main body of gdb code. All output from commands should go to a GDB_FILE. Target-specific code can still use stdio directly to communicate with targets.
309 lines
9.4 KiB
C
309 lines
9.4 KiB
C
/* Native-dependent code for GDB, for NYU Ultra3 running Sym1 OS.
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Copyright (C) 1988, 1989, 1991, 1992 Free Software Foundation, Inc.
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Contributed by David Wood (wood@nyu.edu) at New York University.
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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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#define DEBUG
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#include "defs.h"
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#include "frame.h"
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#include "inferior.h"
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#include "symtab.h"
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#include "value.h"
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#include <sys/types.h>
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#include <sys/param.h>
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#include <signal.h>
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#include <sys/ioctl.h>
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#include <fcntl.h>
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#include "gdbcore.h"
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#include <sys/file.h>
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#include <sys/stat.h>
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/* Assumes support for AMD's Binary Compatibility Standard
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for ptrace(). If you define ULTRA3, the ultra3 extensions to
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ptrace() are used allowing the reading of more than one register
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at a time.
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This file assumes KERNEL_DEBUGGING is turned off. This means
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that if the user/gdb tries to read gr64-gr95 or any of the
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protected special registers we silently return -1 (see the
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CANNOT_STORE/FETCH_REGISTER macros). */
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#define ULTRA3
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#if !defined (offsetof)
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# define offsetof(TYPE, MEMBER) ((unsigned long) &((TYPE *)0)->MEMBER)
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#endif
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extern int errno;
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struct ptrace_user pt_struct;
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/* Get all available registers from the inferior. Registers that are
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* defined in REGISTER_NAMES, but not available to the user/gdb are
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* supplied as -1. This may include gr64-gr95 and the protected special
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* purpose registers.
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*/
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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 int i,j,ret_val=0;
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char buf[128];
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if (regno != -1) {
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fetch_register (regno);
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return;
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}
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/* Global Registers */
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#ifdef ULTRA3
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errno = 0;
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ptrace (PT_READ_STRUCT, inferior_pid,
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(PTRACE_ARG3_TYPE) register_addr(GR96_REGNUM,0),
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(int)&pt_struct.pt_gr[0], 32*4);
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if (errno != 0) {
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perror_with_name ("reading global registers");
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ret_val = -1;
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} else for (regno=GR96_REGNUM, j=0 ; j<32 ; regno++, j++) {
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supply_register (regno, &pt_struct.pt_gr[j]);
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}
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#else
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for (regno=GR96_REGNUM ; !ret_val && regno < GR96_REGNUM+32 ; regno++)
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fetch_register(regno);
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#endif
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/* Local Registers */
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#ifdef ULTRA3
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errno = 0;
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ptrace (PT_READ_STRUCT, inferior_pid,
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(PTRACE_ARG3_TYPE) register_addr(LR0_REGNUM,0),
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(int)&pt_struct.pt_lr[0], 128*4);
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if (errno != 0) {
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perror_with_name ("reading local registers");
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ret_val = -1;
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} else for (regno=LR0_REGNUM, j=0 ; j<128 ; regno++, j++) {
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supply_register (regno, &pt_struct.pt_lr[j]);
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}
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#else
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for (regno=LR0_REGNUM ; !ret_val && regno < LR0_REGNUM+128 ; regno++)
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fetch_register(regno);
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#endif
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/* Special Registers */
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fetch_register(GR1_REGNUM);
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fetch_register(CPS_REGNUM);
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fetch_register(PC_REGNUM);
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fetch_register(NPC_REGNUM);
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fetch_register(PC2_REGNUM);
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fetch_register(IPC_REGNUM);
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fetch_register(IPA_REGNUM);
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fetch_register(IPB_REGNUM);
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fetch_register(Q_REGNUM);
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fetch_register(BP_REGNUM);
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fetch_register(FC_REGNUM);
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/* Fake any registers that are in REGISTER_NAMES, but not available to gdb */
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registers_fetched();
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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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* NOTE: Assumes AMD's binary compatibility standard.
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*/
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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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{
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if (CANNOT_STORE_REGISTER(regno))
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return;
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regaddr = register_addr (regno, 0);
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errno = 0;
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ptrace (PT_WRITE_U, inferior_pid,
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(PTRACE_ARG3_TYPE) regaddr, read_register(regno));
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if (errno != 0)
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{
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sprintf (buf, "writing register %s (#%d)", reg_names[regno],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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#ifdef ULTRA3
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pt_struct.pt_gr1 = read_register(GR1_REGNUM);
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for (regno = GR96_REGNUM; regno < GR96_REGNUM+32; regno++)
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pt_struct.pt_gr[regno] = read_register(regno);
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for (regno = LR0_REGNUM; regno < LR0_REGNUM+128; regno++)
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pt_struct.pt_gr[regno] = read_register(regno);
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errno = 0;
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ptrace (PT_WRITE_STRUCT, inferior_pid,
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(PTRACE_ARG3_TYPE) register_addr(GR1_REGNUM,0),
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(int)&pt_struct.pt_gr1,(1*32*128)*4);
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if (errno != 0)
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{
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sprintf (buf, "writing all local/global registers");
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perror_with_name (buf);
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}
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pt_struct.pt_psr = read_register(CPS_REGNUM);
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pt_struct.pt_pc0 = read_register(NPC_REGNUM);
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pt_struct.pt_pc1 = read_register(PC_REGNUM);
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pt_struct.pt_pc2 = read_register(PC2_REGNUM);
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pt_struct.pt_ipc = read_register(IPC_REGNUM);
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pt_struct.pt_ipa = read_register(IPA_REGNUM);
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pt_struct.pt_ipb = read_register(IPB_REGNUM);
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pt_struct.pt_q = read_register(Q_REGNUM);
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pt_struct.pt_bp = read_register(BP_REGNUM);
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pt_struct.pt_fc = read_register(FC_REGNUM);
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errno = 0;
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ptrace (PT_WRITE_STRUCT, inferior_pid,
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(PTRACE_ARG3_TYPE) register_addr(CPS_REGNUM,0),
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(int)&pt_struct.pt_psr,(10)*4);
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if (errno != 0)
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{
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sprintf (buf, "writing all special registers");
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perror_with_name (buf);
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return;
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}
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#else
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store_inferior_registers(GR1_REGNUM);
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for (regno=GR96_REGNUM ; regno<GR96_REGNUM+32 ; regno++)
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store_inferior_registers(regno);
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for (regno=LR0_REGNUM ; regno<LR0_REGNUM+128 ; regno++)
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store_inferior_registers(regno);
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store_inferior_registers(CPS_REGNUM);
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store_inferior_registers(PC_REGNUM);
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store_inferior_registers(NPC_REGNUM);
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store_inferior_registers(PC2_REGNUM);
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store_inferior_registers(IPC_REGNUM);
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store_inferior_registers(IPA_REGNUM);
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store_inferior_registers(IPB_REGNUM);
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store_inferior_registers(Q_REGNUM);
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store_inferior_registers(BP_REGNUM);
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store_inferior_registers(FC_REGNUM);
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#endif /* ULTRA3 */
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}
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}
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/*
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* Fetch an individual register (and supply it).
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* return 0 on success, -1 on failure.
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* NOTE: Assumes AMD's Binary Compatibility Standard for ptrace().
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*/
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static void
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fetch_register (regno)
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int regno;
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{
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char buf[128];
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int val;
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if (CANNOT_FETCH_REGISTER(regno)) {
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val = -1;
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supply_register (regno, &val);
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} else {
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errno = 0;
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val = ptrace (PT_READ_U, inferior_pid,
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(PTRACE_ARG3_TYPE) register_addr(regno,0), 0);
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if (errno != 0) {
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sprintf(buf,"reading register %s (#%d)",reg_names[regno],regno);
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perror_with_name (buf);
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} else {
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supply_register (regno, &val);
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}
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}
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}
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/*
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* Read AMD's Binary Compatibilty Standard conforming core file.
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* struct ptrace_user is the first thing in the core file
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*/
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void
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fetch_core_registers ()
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{
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register int regno;
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int val;
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char buf[4];
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for (regno = 0 ; regno < NUM_REGS; regno++) {
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if (!CANNOT_FETCH_REGISTER(regno)) {
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val = bfd_seek (core_bfd, (file_ptr) register_addr (regno, 0), L_SET);
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if (val < 0 || (val = bfd_read (buf, sizeof buf, 1, core_bfd)) < 0) {
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char * buffer = (char *) alloca (strlen (reg_names[regno]) + 35);
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strcpy (buffer, "Reading core register ");
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strcat (buffer, reg_names[regno]);
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perror_with_name (buffer);
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}
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supply_register (regno, buf);
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}
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}
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/* Fake any registers that are in REGISTER_NAMES, but not available to gdb */
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registers_fetched();
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}
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/*
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* Takes a register number as defined in tm.h via REGISTER_NAMES, and maps
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* it to an offset in a struct ptrace_user defined by AMD's BCS.
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* That is, it defines the mapping between gdb register numbers and items in
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* a struct ptrace_user.
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* A register protection scheme is set up here. If a register not
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* available to the user is specified in 'regno', then an address that
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* will cause ptrace() to fail is returned.
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*/
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unsigned int
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register_addr (regno,blockend)
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unsigned int regno;
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char *blockend;
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{
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if ((regno >= LR0_REGNUM) && (regno < LR0_REGNUM + 128)) {
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return(offsetof(struct ptrace_user,pt_lr[regno-LR0_REGNUM]));
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} else if ((regno >= GR96_REGNUM) && (regno < GR96_REGNUM + 32)) {
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return(offsetof(struct ptrace_user,pt_gr[regno-GR96_REGNUM]));
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} else {
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switch (regno) {
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case GR1_REGNUM: return(offsetof(struct ptrace_user,pt_gr1));
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case CPS_REGNUM: return(offsetof(struct ptrace_user,pt_psr));
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case NPC_REGNUM: return(offsetof(struct ptrace_user,pt_pc0));
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case PC_REGNUM: return(offsetof(struct ptrace_user,pt_pc1));
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case PC2_REGNUM: return(offsetof(struct ptrace_user,pt_pc2));
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case IPC_REGNUM: return(offsetof(struct ptrace_user,pt_ipc));
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case IPA_REGNUM: return(offsetof(struct ptrace_user,pt_ipa));
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case IPB_REGNUM: return(offsetof(struct ptrace_user,pt_ipb));
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case Q_REGNUM: return(offsetof(struct ptrace_user,pt_q));
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case BP_REGNUM: return(offsetof(struct ptrace_user,pt_bp));
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case FC_REGNUM: return(offsetof(struct ptrace_user,pt_fc));
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default:
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fprintf_filtered(gdb_stderr,"register_addr():Bad register %s (%d)\n",
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reg_names[regno],regno);
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return(0xffffffff); /* Should make ptrace() fail */
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}
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}
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}
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