1993-03-23 01:19:58 +00:00
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/* Definitions for native support of irix4.
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Copyright (C) 1991, 1992 Free Software Foundation, Inc.
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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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1995-08-02 03:41:12 +00:00
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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1993-03-23 01:19:58 +00:00
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/*
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* Let's use /debug instead of all this dangerous mucking about
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* with ptrace(), which seems *extremely* fragile, anyway.
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*/
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#define USE_PROC_FS
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Thu Apr 10 13:20:53 1997 Geoffrey Noer <noer@cygnus.com>
* procfs.c: Substantial (but incomplete) changes to support
sysv4.2mp procfs as implemented in UnixWare 2.1. The procinfo
struct now has substructs like struct flt_ctl instead of
just a fltset_t and has a ctl_fd, status_fd, as_fd, and
map_fd instead of a single fd. Non-sysv4.2mp procfs models
still have the structs and multiple fds, but don't use the
entire struct and the four fds all point to the same thing.
We use PROCFS_USE_READ_WRITE to decide whether to talk to
procfs with reads/writes or use ioctl instead. We use
HAVE_MULTIPLE_PROC_FDS to determine whether procfs really has
multiple fds or not. PROC_NAME_FMT is split out into
CTL_PROC_NAME_FMT, AS_PROC_NAME_FMT, MAP_PROC_NAME_FMT,
STATUS_PROC_NAME_FMT.
(procfs_notice_signals): now a necessary wrapper around
(notice_signals): which are the new guts for noticing signals
(open_proc_file): gets a new flag arg used in sysv4.2mp to
determine whether or not to attempt to open the ctl_fd.
(procfs_read_status): new local function, reads procfs status
(procfs_write_pcwstop): new local function, writes a PCWSTOP
(procfs_write_pckill): new local function, writes a PCKILL
(unconditionally_kill_inferior): remove signo since we now
just call procfs_write_pckill().
(procfs_xfer_memory): call lseek with SEEK_SET rather than 0
(proc_iterate_over_mappings): the whole function is ifdefed
on UNIXWARE to keep things readable.
Expanded the syscall_table to include new potential sysv4.2mp
members. Note that all ifdefs of UNIXWARE should be eliminated
if possible or renamed to describe what's being selected for a
bit better. Sysv4.2mp and IRIX both have SYS_sproc so the
IRIX specific code now also checks it's not UNIXWARE.
* config/i386/tm-i386v42mp.h: also define HAVE_PSTATUS_T,
HAVE_NO_PRRUN_T, PROCFS_USE_READ_WRITE, and UNIXWARE
* config/mips/nm-irix4.h: set CTL_PROC_NAME_FMT et al to
"/debug/%d" as PROC_NAME_FMT used to be
1997-04-10 20:24:42 +00:00
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#define CTL_PROC_NAME_FMT "/debug/%d"
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#define AS_PROC_NAME_FMT "/debug/%d"
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#define MAP_PROC_NAME_FMT "/debug/%d"
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#define STATUS_PROC_NAME_FMT "/debug/%d"
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1993-03-23 01:19:58 +00:00
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/* Don't need special routines for the SGI -- we can use infptrace.c */
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#undef FETCH_INFERIOR_REGISTERS
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#define U_REGS_OFFSET 0
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1993-07-03 00:36:35 +00:00
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/* Is this really true or is this just a leftover from a DECstation
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config file? */
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#define ONE_PROCESS_WRITETEXT
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1994-04-14 03:13:52 +00:00
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1995-05-22 23:03:42 +00:00
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#define TARGET_HAS_HARDWARE_WATCHPOINTS
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1994-04-14 03:13:52 +00:00
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/* Temporary new watchpoint stuff */
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1994-06-10 01:22:38 +00:00
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#define TARGET_CAN_USE_HARDWARE_WATCHPOINT(type, cnt, ot) \
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((type) == bp_hardware_watchpoint)
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1994-04-14 03:13:52 +00:00
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/* When a hardware watchpoint fires off the PC will be left at the
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instruction which caused the watchpoint. It will be necessary for
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GDB to step over the watchpoint. */
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#define STOPPED_BY_WATCHPOINT(W) \
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procfs_stopped_by_watchpoint(inferior_pid)
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1996-07-28 21:41:09 +00:00
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extern int procfs_stopped_by_watchpoint PARAMS ((int));
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1994-04-14 03:13:52 +00:00
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#define HAVE_NONSTEPPABLE_WATCHPOINT
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/* Use these macros for watchpoint insertion/deletion. */
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1994-06-10 01:22:38 +00:00
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/* type can be 0: write watch, 1: read watch, 2: access watch (read/write) */
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#define target_insert_watchpoint(addr, len, type) procfs_set_watchpoint (inferior_pid, addr, len, 2)
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#define target_remove_watchpoint(addr, len, type) procfs_set_watchpoint (inferior_pid, addr, 0, 0)
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1996-07-28 21:41:09 +00:00
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extern int procfs_set_watchpoint PARAMS ((int, CORE_ADDR, int, int));
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