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ptrace for mips n32 and n64
- From: Alexandre Oliva <aoliva at redhat dot com>
- To: libc-alpha at sources dot redhat dot com
- Date: 14 Mar 2003 11:35:42 -0300
- Subject: ptrace for mips n32 and n64
- Organization: GCC Team, Red Hat
Yay. Lots of code duplication. I'm sure Uli will love this patch.
:-/ Ok? (the point being that ptrace must take as argument and return
64-bit values on n32)
Index: ChangeLog
2003-03-14 Alexandre Oliva <aoliva at redhat dot com>
* sysdeps/unix/sysv/linux/mips/sys/ptrace.h: New file.
* sysdeps/unix/sysv/linux/mips/ptrace.c: New file. Use long
long type for registers on n32.
Index: sysdeps/unix/sysv/linux/mips/sys/ptrace.h
--- /dev/null 2002-10-04 15:48:04.000000000 -0300
+++ sysdeps/unix/sysv/linux/mips/sys/ptrace.h 2003-01-15 12:28:59.000000000 -0200
@@ -0,0 +1,135 @@
+/* `ptrace' debugger support interface. Linux version.
+ Copyright (C) 1996, 1997, 1998, 1999, 2000, 2002, 2003
+ Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#ifndef _SYS_PTRACE_H
+#define _SYS_PTRACE_H 1
+
+#include <features.h>
+
+__BEGIN_DECLS
+
+/* Type of the REQUEST argument to `ptrace.' */
+enum __ptrace_request
+{
+ /* Indicate that the process making this request should be traced.
+ All signals received by this process can be intercepted by its
+ parent, and its parent can use the other `ptrace' requests. */
+ PTRACE_TRACEME = 0,
+#define PT_TRACE_ME PTRACE_TRACEME
+
+ /* Return the word in the process's text space at address ADDR. */
+ PTRACE_PEEKTEXT = 1,
+#define PT_READ_I PTRACE_PEEKTEXT
+
+ /* Return the word in the process's data space at address ADDR. */
+ PTRACE_PEEKDATA = 2,
+#define PT_READ_D PTRACE_PEEKDATA
+
+ /* Return the word in the process's user area at offset ADDR. */
+ PTRACE_PEEKUSER = 3,
+#define PT_READ_U PTRACE_PEEKUSER
+
+ /* Write the word DATA into the process's text space at address ADDR. */
+ PTRACE_POKETEXT = 4,
+#define PT_WRITE_I PTRACE_POKETEXT
+
+ /* Write the word DATA into the process's data space at address ADDR. */
+ PTRACE_POKEDATA = 5,
+#define PT_WRITE_D PTRACE_POKEDATA
+
+ /* Write the word DATA into the process's user area at offset ADDR. */
+ PTRACE_POKEUSER = 6,
+#define PT_WRITE_U PTRACE_POKEUSER
+
+ /* Continue the process. */
+ PTRACE_CONT = 7,
+#define PT_CONTINUE PTRACE_CONT
+
+ /* Kill the process. */
+ PTRACE_KILL = 8,
+#define PT_KILL PTRACE_KILL
+
+ /* Single step the process.
+ This is not supported on all machines. */
+ PTRACE_SINGLESTEP = 9,
+#define PT_STEP PTRACE_SINGLESTEP
+
+ /* Get all general purpose registers used by a processes.
+ This is not supported on all machines. */
+ PTRACE_GETREGS = 12,
+#define PT_GETREGS PTRACE_GETREGS
+
+ /* Set all general purpose registers used by a processes.
+ This is not supported on all machines. */
+ PTRACE_SETREGS = 13,
+#define PT_SETREGS PTRACE_SETREGS
+
+ /* Get all floating point registers used by a processes.
+ This is not supported on all machines. */
+ PTRACE_GETFPREGS = 14,
+#define PT_GETFPREGS PTRACE_GETFPREGS
+
+ /* Set all floating point registers used by a processes.
+ This is not supported on all machines. */
+ PTRACE_SETFPREGS = 15,
+#define PT_SETFPREGS PTRACE_SETFPREGS
+
+ /* Attach to a process that is already running. */
+ PTRACE_ATTACH = 16,
+#define PT_ATTACH PTRACE_ATTACH
+
+ /* Detach from a process attached to with PTRACE_ATTACH. */
+ PTRACE_DETACH = 17,
+#define PT_DETACH PTRACE_DETACH
+
+ /* Get all extended floating point registers used by a processes.
+ This is not supported on all machines. */
+ PTRACE_GETFPXREGS = 18,
+#define PT_GETFPXREGS PTRACE_GETFPXREGS
+
+ /* Set all extended floating point registers used by a processes.
+ This is not supported on all machines. */
+ PTRACE_SETFPXREGS = 19,
+#define PT_SETFPXREGS PTRACE_SETFPXREGS
+
+ /* Continue and stop at the next (return from) syscall. */
+ PTRACE_SYSCALL = 24
+#define PT_SYSCALL PTRACE_SYSCALL
+};
+
+/* Perform process tracing functions. REQUEST is one of the values
+ above, and determines the action to be taken.
+ For all requests except PTRACE_TRACEME, PID specifies the process to be
+ traced.
+
+ PID and the other arguments described above for the various requests should
+ appear (those that are used for the particular request) as:
+ pid_t PID, void *ADDR, int DATA, void *ADDR2
+ after REQUEST. */
+#if defined _ABIN32 && _MIPS_SIM == _ABIN32
+__extension__ extern long long int ptrace
+ (enum __ptrace_request __request, ...) __THROW;
+#else
+extern long int ptrace (enum __ptrace_request __request, ...) __THROW;
+#endif
+
+__END_DECLS
+
+#endif /* _SYS_PTRACE_H */
Index: sysdeps/unix/sysv/linux/mips/ptrace.c
--- /dev/null 2002-10-04 15:48:04.000000000 -0300
+++ sysdeps/unix/sysv/linux/mips/ptrace.c 2003-01-15 12:28:46.000000000 -0200
@@ -0,0 +1,112 @@
+/* Copyright (C) 1995, 1996, 1997, 1998, 2000, 2002, 2003
+ Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/ptrace.h>
+#include <sys/user.h>
+#include <stdarg.h>
+
+#include <sysdep.h>
+#include <sys/syscall.h>
+#include <bp-checks.h>
+
+#if defined _ABIN32 && _MIPS_SIM == _ABIN32
+__extension__ typedef long long int reg_type;
+#else
+typedef long int reg_type;
+#endif
+
+extern reg_type __syscall_ptrace (int, pid_t, void *__unbounded,
+ reg_type __unbounded);
+
+reg_type
+ptrace (enum __ptrace_request request, ...)
+{
+ reg_type res, ret;
+ va_list ap;
+ pid_t pid;
+ void *addr;
+ reg_type data;
+
+ va_start (ap, request);
+ pid = va_arg (ap, pid_t);
+ addr = va_arg (ap, void *);
+ data = va_arg (ap, reg_type);
+ va_end (ap);
+
+ if (request > 0 && request < 4)
+ data = &ret;
+
+#if __BOUNDED_POINTERS__
+ switch (request)
+ {
+ case PTRACE_PEEKTEXT:
+ case PTRACE_PEEKDATA:
+ case PTRACE_PEEKUSER:
+ case PTRACE_POKETEXT:
+ case PTRACE_POKEDATA:
+ case PTRACE_POKEUSER:
+ (void) CHECK_1 ((int *) addr);
+ (void) CHECK_1 ((int *) data);
+ break;
+
+ case PTRACE_GETREGS:
+ case PTRACE_SETREGS:
+ /* We don't know the size of data, so the best we can do is ensure
+ that `data' is valid for at least one word. */
+ (void) CHECK_1 ((int *) data);
+ break;
+
+ case PTRACE_GETFPREGS:
+ case PTRACE_SETFPREGS:
+ /* We don't know the size of data, so the best we can do is ensure
+ that `data' is valid for at least one word. */
+ (void) CHECK_1 ((int *) data);
+ break;
+
+ case PTRACE_GETFPXREGS:
+ case PTRACE_SETFPXREGS:
+ /* We don't know the size of data, so the best we can do is ensure
+ that `data' is valid for at least one word. */
+ (void) CHECK_1 ((int *) data);
+ break;
+
+ case PTRACE_TRACEME:
+ case PTRACE_CONT:
+ case PTRACE_KILL:
+ case PTRACE_SINGLESTEP:
+ case PTRACE_ATTACH:
+ case PTRACE_DETACH:
+ case PTRACE_SYSCALL:
+ /* Neither `data' nor `addr' needs any checks. */
+ break;
+ };
+#endif
+
+ res = INLINE_SYSCALL (ptrace, 4, request, pid,
+ __ptrvalue (addr), __ptrvalue (data));
+ if (res >= 0 && request > 0 && request < 4)
+ {
+ __set_errno (0);
+ return ret;
+ }
+
+ return res;
+}
--
Alexandre Oliva Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/
Red Hat GCC Developer aoliva at {redhat dot com, gcc.gnu.org}
CS PhD student at IC-Unicamp oliva at {lsd dot ic dot unicamp dot br, gnu.org}
Free Software Evangelist Professional serial bug killer