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154 lines
4.5 KiB
C
154 lines
4.5 KiB
C
/* Portable <sys/ptrace.h>
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Copyright (C) 2004-2017 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 3 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, see <http://www.gnu.org/licenses/>. */
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#ifndef GDB_PTRACE_H
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#define GDB_PTRACE_H
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/* The <sys/ptrace.h> header was introduced with 4.4BSD, and provided
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the PT_* symbolic constants for the ptrace(2) request numbers. The
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ptrace(2) prototype was added later to the same header on BSD.
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SunOS and GNU/Linux have slightly different symbolic names for the
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constants that start with PTRACE_*. System V still doesn't have
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(and probably never will have) a <sys/ptrace.h> with symbolic
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constants; the ptrace(2) prototype can be found in <unistd.h>.
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Fortunately all systems use the same numerical constants for the
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common ptrace requests. */
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#ifdef HAVE_PTRACE_H
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# include <ptrace.h>
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#elif defined(HAVE_SYS_PTRACE_H)
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# include <sys/ptrace.h>
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#endif
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/* No need to include <unistd.h> since it's already included by
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"defs.h". */
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#ifndef PT_TRACE_ME
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# define PT_TRACE_ME 0
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#endif
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#ifndef PT_READ_I
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# define PT_READ_I 1 /* Read word in child's I space. */
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#endif
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#ifndef PT_READ_D
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# define PT_READ_D 2 /* Read word in child's D space. */
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#endif
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#ifndef PT_READ_U
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# define PT_READ_U 3 /* Read word in child's U space. */
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#endif
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#ifndef PT_WRITE_I
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# define PT_WRITE_I 4 /* Write word in child's I space. */
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#endif
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#ifndef PT_WRITE_D
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# define PT_WRITE_D 5 /* Write word in child's D space. */
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#endif
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#ifndef PT_WRITE_U
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# define PT_WRITE_U 6 /* Write word in child's U space. */
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#endif
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/* HP-UX doesn't define PT_CONTINUE and PT_STEP. Instead of those two
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ptrace requests, it has PT_CONTIN, PT_CONTIN1, PT_SINGLE and
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PT_SINGLE1. PT_CONTIN1 and PT_SINGLE1 preserve pending signals,
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which apparently is what is wanted by the HP-UX native code. */
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#ifndef PT_CONTINUE
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# ifdef PT_CONTIN1
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# define PT_CONTINUE PT_CONTIN1
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# else
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# define PT_CONTINUE 7 /* Continue the child. */
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# endif
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#endif
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#ifndef PT_KILL
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# define PT_KILL 8 /* Kill the child process. */
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#endif
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#ifndef PT_STEP
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# ifdef PT_SINGLE1
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# define PT_STEP PT_SINGLE1
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# else
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# define PT_STEP 9 /* Single step the child. */
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# endif
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#endif
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/* Not all systems support attaching and detaching. */
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#ifndef PT_ATTACH
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# ifdef PTRACE_ATTACH
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# define PT_ATTACH PTRACE_ATTACH
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# endif
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#endif
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#ifndef PT_DETACH
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# ifdef PTRACE_DETACH
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# define PT_DETACH PTRACE_DETACH
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# endif
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#endif
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/* For systems such as HP/UX that do not provide PT_SYSCALL, define it
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here as an alias for PT_CONTINUE. This is what the PT_SYSCALL
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request is expected to do, in addition to stopping when entering/
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exiting a system call. Chances are, if the system supports system
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call tracing, enabling this feature is probably done separately;
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and there is probably no special request that we would be required
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to use when resuming the execution of our program. */
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#ifndef PT_SYSCALL
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# ifdef PTRACE_SYSCALL
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# define PT_SYSCALL PTRACE_SYSCALL
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#else
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# define PT_SYSCALL PT_CONTINUE
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# endif
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#endif
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/* Some systems, in particular DEC OSF/1, Digital Unix, Compaq Tru64
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or whatever it's called these days, don't provide a prototype for
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ptrace. Provide one to silence compiler warnings. */
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#ifndef HAVE_DECL_PTRACE
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extern PTRACE_TYPE_RET ptrace();
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#endif
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/* Some systems, at least AIX and HP-UX have a ptrace with five
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arguments. Since we never use the fifth argument, define a ptrace
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macro that calls the real ptrace with the last argument set to
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zero. */
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#ifdef PTRACE_TYPE_ARG5
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# ifdef HAVE_PTRACE64
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# define ptrace(request, pid, addr, data) \
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ptrace64 (request, pid, addr, data, 0)
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# undef PTRACE_TYPE_ARG3
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# define PTRACE_TYPE_ARG3 long long
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# else
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# define ptrace(request, pid, addr, data) \
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ptrace (request, pid, addr, data, 0)
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# endif
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#else
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/* Wrapper that avoids adding a pointless cast to all callers. */
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# define ptrace(request, pid, addr, data) \
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ptrace ((PTRACE_TYPE_ARG1) request, pid, addr, data)
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#endif
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#endif /* gdb_ptrace.h */
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