This is the mail archive of the
gdb-patches@sourceware.cygnus.com
mailing list for the GDB project.
Re: Make threads architecture-independent on Linux
- To: hjl at lucon dot org
- Subject: Re: Make threads architecture-independent on Linux
- From: Jim Kingdon <kingdon at redhat dot com>
- Date: Fri, 12 Nov 1999 13:58:41 -0500
- CC: gdb-patches at sourceware dot cygnus dot com
- References: <19991110234852.420C61B493@ocean.lucon.org>
> You should have config/tm-linux.h enclosed here and modify all the
> Linux tm files to include it. Otherwise, linuxthreads won't work
> right if REALTIME_HI and REALTIME_LO are not correct.
Ouch. Thanks for pointing this out. I've fixed that and another
problem and here's another try (this time I tested it on alpha as well
as x86).
To apply, cd to the gdb/gdb directory and run
patch -p 1 <this-message
> My gdb tree is a mess. I don't have the time to clean it up.
Don't worry about it - we'll get there one way or another.
1999-11-08 Jim Kingdon <http://developer.redhat.com/>
Enable threads for all linux architectures:
* config/nm-linux.h: New file.
* config/{alpha,i386,m68k,sparc}/nm-linux.h: Use it.
* config/tm-linux.h: New file.
* config/{i386,m68k,sparc}/tm-linux.h,
config/alpha/tm-alphalinux.h: Use it.
* config/{m68k,sparc}/linux.mh, config/alpha/alpha-linux.mh:
Add linux-thread.o.
--- /dev/null Tue May 5 16:32:27 1998
+++ gdb/config/nm-linux.h Mon Nov 1 15:33:51 1999
@@ -0,0 +1,52 @@
+/* Native support for GNU/Linux, for GDB, the GNU debugger.
+ Copyright (C) 1999
+ Free Software Foundation, Inc.
+
+ This file is part of GDB.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+/* Linux is svr4ish but not that much */
+#undef USE_PROC_FS
+
+/* Tell gdb that we can attach and detach other processes */
+#define ATTACH_DETACH
+
+/* We define this if link.h is available, because with ELF we use SVR4 style
+ shared libraries. */
+
+#ifdef HAVE_LINK_H
+#define SVR4_SHARED_LIBS
+#include "solib.h" /* Support for shared libraries. */
+#endif
+
+/* Support for the glibc linuxthreads package. */
+
+#ifdef __STDC__
+struct objfile;
+#endif
+
+extern void
+linuxthreads_new_objfile PARAMS ((struct objfile *objfile));
+#define target_new_objfile(OBJFILE) linuxthreads_new_objfile (OBJFILE)
+
+extern char *
+linuxthreads_pid_to_str PARAMS ((int pid));
+#define target_pid_to_str(PID) linuxthreads_pid_to_str (PID)
+
+extern int
+linuxthreads_prepare_to_proceed PARAMS ((int step));
+#define PREPARE_TO_PROCEED(select_it) linuxthreads_prepare_to_proceed (1)
Index: gdb/config/alpha/nm-linux.h
===================================================================
RCS file: /cvs/gdb/gdb/gdb/config/alpha/nm-linux.h,v
retrieving revision 1.1.1.3
diff -u -r1.1.1.3 nm-linux.h
--- gdb/config/alpha/nm-linux.h 1999/07/07 20:11:53 1.1.1.3
+++ gdb/config/alpha/nm-linux.h 1999/11/08 23:09:59
@@ -18,6 +18,8 @@
Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
+#include "nm-linux.h"
+
/* Figure out where the longjmp will land. We expect that we have just entered
longjmp and haven't yet setup the stack frame, so the args are still in the
argument regs. A0_REGNUM points at the jmp_buf structure from which we
@@ -28,13 +30,12 @@
extern int
get_longjmp_target PARAMS ((CORE_ADDR *));
-/* Tell gdb that we can attach and detach other processes */
-#define ATTACH_DETACH
-
/* ptrace register ``addresses'' are absolute. */
#define U_REGS_OFFSET 0
+/* FIXME: This is probably true, or should be, on all Linux ports.
+ IA64? Sparc64? */
#define PTRACE_ARG3_TYPE long
/* ptrace transfers longs, the ptrace man page is lying. */
@@ -51,10 +52,7 @@
/* Support for shared libraries. */
-#include "solib.h"
-
#ifdef __ELF__
-#define SVR4_SHARED_LIBS
#define TARGET_ELF64
#endif
@@ -65,3 +63,4 @@
/* Given a pointer to either a gregset_t or fpregset_t, return a
pointer to the first register. */
#define ALPHA_REGSET_BASE(regsetp) ((long *) (regsetp))
+
Index: gdb/config/i386/nm-linux.h
===================================================================
RCS file: /cvs/gdb/gdb/gdb/config/i386/nm-linux.h,v
retrieving revision 1.1.1.3
diff -u -r1.1.1.3 nm-linux.h
--- gdb/config/i386/nm-linux.h 1999/09/08 23:59:52 1.1.1.3
+++ gdb/config/i386/nm-linux.h 1999/11/08 23:09:59
@@ -23,14 +23,12 @@
#define NM_LINUX_H
#include "i386/nm-i386v.h"
+#include "nm-linux.h"
/* Return sizeof user struct to callers in less machine dependent routines */
#define KERNEL_U_SIZE kernel_u_size()
extern int kernel_u_size PARAMS ((void));
-
-/* Tell gdb that we can attach and detach other processes */
-#define ATTACH_DETACH
#define U_REGS_OFFSET 0
Index: gdb/config/m68k/nm-linux.h
===================================================================
RCS file: /cvs/gdb/gdb/gdb/config/m68k/nm-linux.h,v
retrieving revision 1.1.1.2
diff -u -r1.1.1.2 nm-linux.h
--- gdb/config/m68k/nm-linux.h 1999/07/07 20:14:04 1.1.1.2
+++ gdb/config/m68k/nm-linux.h 1999/11/08 23:10:00
@@ -21,23 +21,14 @@
#ifndef NM_LINUX_H
#define NM_LINUX_H
+#include "nm-linux.h"
+
/* Return sizeof user struct to callers in less machine dependent routines */
#define KERNEL_U_SIZE kernel_u_size()
extern int kernel_u_size PARAMS ((void));
-/* Tell gdb that we can attach and detach other processes */
-#define ATTACH_DETACH
-
#define U_REGS_OFFSET 0
-
-/* We define this if link.h is available, because with ELF we use SVR4 style
- shared libraries. */
-
-#ifdef HAVE_LINK_H
-#define SVR4_SHARED_LIBS
-#include "solib.h" /* Support for shared libraries. */
-#endif
#define REGISTER_U_ADDR(addr, blockend, regno) \
(addr) = m68k_linux_register_u_addr ((blockend),(regno));
Index: gdb/config/sparc/nm-linux.h
===================================================================
RCS file: /cvs/gdb/gdb/gdb/config/sparc/nm-linux.h,v
retrieving revision 1.1.1.2
diff -u -r1.1.1.2 nm-linux.h
--- gdb/config/sparc/nm-linux.h 1999/07/07 20:17:01 1.1.1.2
+++ gdb/config/sparc/nm-linux.h 1999/11/08 23:10:00
@@ -27,6 +27,3 @@
#define KERNEL_U_SIZE kernel_u_size()
extern int kernel_u_size PARAMS ((void));
-
-/* Linux is svr4ish but not that much */
-#undef USE_PROC_FS
Index: sparc/tm-linux.h
===================================================================
RCS file: /cvs/gdb/gdb/gdb/config/sparc/tm-linux.h,v
retrieving revision 1.1.1.2
diff -u -r1.1.1.2 tm-linux.h
--- tm-linux.h 1999/07/07 20:17:06 1.1.1.2
+++ gdb/config/sparc/tm-linux.h 1999/11/12 13:35:58
@@ -25,6 +25,6 @@
#define SIGCONTEXT_PC_OFFSET 12
-#include "tm-sysv4.h"
+#include "tm-linux.h"
#endif /* TM_SPARCLINUX_H */
Index: m68k/tm-linux.h
===================================================================
RCS file: /cvs/gdb/gdb/gdb/config/m68k/tm-linux.h,v
retrieving revision 1.1.1.2
diff -u -r1.1.1.2 tm-linux.h
--- tm-linux.h 1999/07/07 20:14:22 1.1.1.2
+++ gdb/config/m68k/tm-linux.h 1999/11/12 13:36:01
@@ -72,7 +72,7 @@
} \
}
-#include "tm-sysv4.h"
+#include "tm-linux.h"
#include "m68k/tm-m68k.h"
/* Extract from an array REGBUF containing the (raw) register state
Index: i386/tm-linux.h
===================================================================
RCS file: /cvs/gdb/gdb/gdb/config/i386/tm-linux.h,v
retrieving revision 1.1.1.7
diff -u -r1.1.1.7 tm-linux.h
--- tm-linux.h 1999/11/02 04:44:22 1.1.1.7
+++ gdb/config/i386/tm-linux.h 1999/11/12 13:36:03
@@ -28,6 +28,7 @@
#endif
#include "i386/tm-i386.h"
+#include "tm-linux.h"
/* Size of sigcontext, from <asm/sigcontext.h>. */
#define LINUX_SIGCONTEXT_SIZE (88)
@@ -38,10 +39,6 @@
/* Offset to saved SP in sigcontext, from <asm/sigcontext.h>. */
#define LINUX_SIGCONTEXT_SP_OFFSET (28)
-/* We need this file for the SOLIB_TRAMPOLINE stuff. */
-
-#include "tm-sysv4.h"
-
#define LOW_RETURN_REGNUM 0 /* holds low four bytes of result */
#define HIGH_RETURN_REGNUM 2 /* holds high four bytes of result */
@@ -166,18 +163,6 @@
: read_memory_integer ((FRAME)->frame + 4, 4)))
extern CORE_ADDR i386_linux_sigtramp_saved_sp PARAMS ((struct frame_info *));
-
-/* Some versions of Linux have real-time signal support in the C library, and
- some don't. We have to include this file to find out. */
-#include <signal.h>
-
-#ifdef __SIGRTMIN
-#define REALTIME_LO __SIGRTMIN
-#define REALTIME_HI (__SIGRTMAX + 1)
-#else
-#define REALTIME_LO 32
-#define REALTIME_HI 64
-#endif
/* When we call a function in a shared library, and the PLT sends us
into the dynamic linker to find the function's real address, we
Index: alpha/tm-alphalinux.h
===================================================================
RCS file: /cvs/gdb/gdb/gdb/config/alpha/tm-alphalinux.h,v
retrieving revision 1.1.1.2
diff -u -r1.1.1.2 tm-alphalinux.h
--- tm-alphalinux.h 1999/07/07 20:11:59 1.1.1.2
+++ gdb/config/alpha/tm-alphalinux.h 1999/11/12 13:36:05
@@ -75,7 +75,6 @@
#undef FRAME_PAST_SIGTRAMP_FRAME
#define FRAME_PAST_SIGTRAMP_FRAME(frame, pc) (0)
-/* We need this for the SOLIB_TRAMPOLINE stuff. */
-#include "tm-sysv4.h"
+#include "tm-linux.h"
#endif /* TM_LINUXALPHA_H */
--- /dev/null Tue May 5 16:32:27 1998
+++ gdb/config/tm-linux.h Thu Nov 11 21:51:21 1999
@@ -0,0 +1,36 @@
+/* Native support for GNU/Linux, for GDB, the GNU debugger.
+ Copyright (C) 1999
+ Free Software Foundation, Inc.
+
+ This file is part of GDB.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+/* Some versions of Linux have real-time signal support in the C library, and
+ some don't. We have to include this file to find out. */
+#include <signal.h>
+
+#ifdef __SIGRTMIN
+#define REALTIME_LO __SIGRTMIN
+#define REALTIME_HI (__SIGRTMAX + 1)
+#else
+#define REALTIME_LO 32
+#define REALTIME_HI 64
+#endif
+
+/* We need this file for the SOLIB_TRAMPOLINE stuff. */
+
+#include "tm-sysv4.h"
Index: gdb/config/alpha/alpha-linux.mh
===================================================================
RCS file: /cvs/gdb/gdb/gdb/config/alpha/alpha-linux.mh,v
retrieving revision 1.1.1.1
diff -u -r1.1.1.1 alpha-linux.mh
--- alpha-linux.mh 1999/04/16 01:34:14 1.1.1.1
+++ gdb/config/alpha/alpha-linux.mh 1999/11/12 17:54:12
@@ -3,7 +3,7 @@
XM_FILE= xm-alphalinux.h
NAT_FILE= nm-linux.h
NATDEPFILES= infptrace.o inftarg.o corelow.o core-regset.o alpha-nat.o \
- fork-child.o solib.o
+ fork-child.o solib.o linux-thread.o
MMALLOC =
MMALLOC_CFLAGS = -DNO_MMALLOC
Index: gdb/config/sparc/linux.mh
===================================================================
RCS file: /cvs/gdb/gdb/gdb/config/sparc/linux.mh,v
retrieving revision 1.1.1.1
diff -u -r1.1.1.1 linux.mh
--- linux.mh 1999/04/16 01:34:25 1.1.1.1
+++ gdb/config/sparc/linux.mh 1999/11/12 17:54:12
@@ -2,6 +2,7 @@
XDEPFILES= ser-tcp.o
XM_FILE= xm-linux.h
NAT_FILE= nm-linux.h
-NATDEPFILES= fork-child.o infptrace.o inftarg.o corelow.o sparc-nat.o
+NATDEPFILES= fork-child.o infptrace.o inftarg.o corelow.o sparc-nat.o \
+ linux-thread.o
HOST_IPC=-DBSD_IPC
GDBSERVER_DEPFILES= low-sparc.o
Index: gdb/config/m68k/linux.mh
===================================================================
RCS file: /cvs/gdb/gdb/gdb/config/m68k/linux.mh,v
retrieving revision 1.1.1.1
diff -u -r1.1.1.1 linux.mh
--- linux.mh 1999/04/16 01:34:21 1.1.1.1
+++ gdb/config/m68k/linux.mh 1999/11/12 17:54:12
@@ -4,6 +4,7 @@
XDEPFILES= ser-tcp.o
NAT_FILE= nm-linux.h
-NATDEPFILES= infptrace.o solib.o inftarg.o fork-child.o corelow.o core-aout.o core-regset.o m68klinux-nat.o
+NATDEPFILES= infptrace.o solib.o inftarg.o fork-child.o \
+ corelow.o core-aout.o core-regset.o m68klinux-nat.o linux-thread.o
GDBSERVER_DEPFILES= low-linux.o