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Fix PR gdb/378.
This commit is contained in:
Andrew Cagney 2002-02-24 22:31:19 +00:00
parent a4b6fc86fa
commit ca557f44a0
10 changed files with 86 additions and 69 deletions
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3
gdb/ChangeLog
View file

@ -4,6 +4,9 @@
with either ``GNU/Linux'' or ``Linux kernel''. Update copyright.
* m68klinux-nat.c, sparc-linux-nat.c, x86-64-linux-nat.c: Ditto.
* x86-64-linux-tdep.c, gregset.h, gdb_wait.h: Ditto.
* ia64-linux-nat.c, infrun.c, linux-proc.c: Ditto.
* proc-service.c, i386-linux-tdep.c, ppc-linux-tdep.c: Ditto.
* s390-tdep.c: Ditto.
Fix PR gdb/378.
2002-02-23 Andrew Cagney <ac131313@redhat.com>

34
gdb/i386-linux-tdep.c
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@ -1,5 +1,6 @@
/* Target-dependent code for Linux running on i386's, for GDB.
Copyright 2000, 2001 Free Software Foundation, Inc.
/* Target-dependent code for GNU/Linux running on i386's, for GDB.
Copyright 2000, 2001, 2002 Free Software Foundation, Inc.
This file is part of GDB.
@ -67,12 +68,12 @@ i386_linux_register_raw_size (int reg)
/* Recognizing signal handler frames. */
/* Linux has two flavors of signals. Normal signal handlers, and
/* GNU/Linux has two flavors of signals. Normal signal handlers, and
"realtime" (RT) signals. The RT signals can provide additional
information to the signal handler if the SA_SIGINFO flag is set
when establishing a signal handler using `sigaction'. It is not
unlikely that future versions of Linux will support SA_SIGINFO for
normal signals too. */
unlikely that future versions of GNU/Linux will support SA_SIGINFO
for normal signals too. */
/* When the i386 Linux kernel calls a signal handler and the
SA_RESTORER flag isn't set, the return address points to a bit of
@ -221,7 +222,7 @@ i386_linux_rt_sigtramp_start (CORE_ADDR pc)
return pc;
}
/* Return whether PC is in a Linux sigtramp routine. */
/* Return whether PC is in a GNU/Linux sigtramp routine. */
int
i386_linux_in_sigtramp (CORE_ADDR pc, char *name)
@ -233,8 +234,8 @@ i386_linux_in_sigtramp (CORE_ADDR pc, char *name)
|| i386_linux_rt_sigtramp_start (pc) != 0);
}
/* Assuming FRAME is for a Linux sigtramp routine, return the address
of the associated sigcontext structure. */
/* Assuming FRAME is for a GNU/Linux sigtramp routine, return the
address of the associated sigcontext structure. */
CORE_ADDR
i386_linux_sigcontext_addr (struct frame_info *frame)
@ -285,8 +286,8 @@ i386_linux_sigcontext_addr (struct frame_info *frame)
/* Offset to saved PC in sigcontext, from <asm/sigcontext.h>. */
#define LINUX_SIGCONTEXT_PC_OFFSET (56)
/* Assuming FRAME is for a Linux sigtramp routine, return the saved
program counter. */
/* Assuming FRAME is for a GNU/Linux sigtramp routine, return the
saved program counter. */
static CORE_ADDR
i386_linux_sigtramp_saved_pc (struct frame_info *frame)
@ -299,8 +300,8 @@ i386_linux_sigtramp_saved_pc (struct frame_info *frame)
/* Offset to saved SP in sigcontext, from <asm/sigcontext.h>. */
#define LINUX_SIGCONTEXT_SP_OFFSET (28)
/* Assuming FRAME is for a Linux sigtramp routine, return the saved
stack pointer. */
/* Assuming FRAME is for a GNU/Linux sigtramp routine, return the
saved stack pointer. */
static CORE_ADDR
i386_linux_sigtramp_saved_sp (struct frame_info *frame)
@ -448,7 +449,7 @@ skip_hurd_resolver (CORE_ADDR pc)
It's kind of gross to do all these checks every time we're
called, since they don't change once the executable has gotten
started. But this is only a temporary hack --- upcoming versions
of Linux will provide a portable, efficient interface for
of GNU/Linux will provide a portable, efficient interface for
debugging programs that use shared libraries. */
struct objfile *objfile;
@ -488,11 +489,12 @@ i386_linux_skip_solib_resolver (CORE_ADDR pc)
}
/* Fetch (and possibly build) an appropriate link_map_offsets
structure for native Linux/x86 targets using the struct offsets
structure for native GNU/Linux x86 targets using the struct offsets
defined in link.h (but without actual reference to that file).
This makes it possible to access Linux/x86 shared libraries from a
GDB that was not built on an Linux/x86 host (for cross debugging). */
This makes it possible to access GNU/Linux x86 shared libraries
from a GDB that was not built on an GNU/Linux x86 host (for cross
debugging). */
struct link_map_offsets *
i386_linux_svr4_fetch_link_map_offsets (void)

16
gdb/i386v-nat.c
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@ -1,6 +1,7 @@
/* Intel 386 native support for SYSV systems (pre-SVR4).
Copyright 1988, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999,
2000 Free Software Foundation, Inc.
Copyright 1988, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1998,
1999, 2000, 2002 Free Software Foundation, Inc.
This file is part of GDB.
@ -46,12 +47,11 @@
#include <fcntl.h>
/* FIXME: The following used to be just "#include <sys/debugreg.h>", but
* the the Linux 2.1.x kernel and glibc 2.0.x are not in sync; including
* <sys/debugreg.h> will result in an error. With luck, these losers
* will get their act together and we can trash this hack in the near future.
* --jsm 1998-10-21
*/
/* FIXME: 1998-10-21/jsm: The following used to be just "#include
<sys/debugreg.h>", but the the Linux kernel (version 2.1.x) and
glibc 2.0.x are not in sync; including <sys/debugreg.h> will result
in an error. With luck, these losers will get their act together
and we can trash this hack in the near future. */
#ifdef TARGET_HAS_HARDWARE_WATCHPOINTS
#ifdef HAVE_ASM_DEBUGREG_H

6
gdb/ia64-linux-nat.c
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@ -1,5 +1,7 @@
/* Functions specific to running gdb native on IA-64 running Linux.
Copyright 1999, 2000, 2001 Free Software Foundation, Inc.
/* Functions specific to running gdb native on IA-64 running
GNU/Linux.
Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
This file is part of GDB.

28
gdb/ia64-tdep.c
View file

@ -1,6 +1,6 @@
/* Target-dependent code for the IA-64 for GDB, the GNU debugger.
Copyright 1999, 2000, 2001
Free Software Foundation, Inc.
Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
This file is part of GDB.
@ -1990,7 +1990,7 @@ ia64_pop_frame_regular (struct frame_info *frame)
size of the frame and the size of the locals (both wrt the
frame that we're going back to). This seems kind of strange,
especially since it seems like we ought to be subtracting the
size of the locals... and we should; but the linux kernel
size of the locals... and we should; but the Linux kernel
wants bsp to be set at the end of all used registers. It's
likely that this code will need to be revised to accomodate
other operating systems. */
@ -2072,10 +2072,11 @@ ia64_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
{
os_ident = elf_elfheader (info.abfd)->e_ident[EI_OSABI];
/* If os_ident is 0, it is not necessarily the case that we're on a
SYSV system. (ELFOSABI_NONE is defined to be 0.) GNU/Linux uses
a note section to record OS/ABI info, but leaves e_ident[EI_OSABI]
zero. So we have to check for note sections too. */
/* If os_ident is 0, it is not necessarily the case that we're
on a SYSV system. (ELFOSABI_NONE is defined to be 0.)
GNU/Linux uses a note section to record OS/ABI info, but
leaves e_ident[EI_OSABI] zero. So we have to check for note
sections too. */
if (os_ident == 0)
{
bfd_map_over_sections (info.abfd,
@ -2112,12 +2113,13 @@ ia64_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
else
tdep->sigcontext_register_address = 0;
/* We know that Linux won't have to resort to the native_find_global_pointer
hackery. But that's the only one we know about so far, so if
native_find_global_pointer is set to something non-zero, then use
it. Otherwise fall back to using generic_elf_find_global_pointer.
This arrangement should (in theory) allow us to cross debug Linux
binaries from an AIX machine. */
/* We know that GNU/Linux won't have to resort to the
native_find_global_pointer hackery. But that's the only one we
know about so far, so if native_find_global_pointer is set to
something non-zero, then use it. Otherwise fall back to using
generic_elf_find_global_pointer. This arrangement should (in
theory) allow us to cross debug GNU/Linux binaries from an AIX
machine. */
if (os_ident == ELFOSABI_LINUX)
tdep->find_global_pointer = generic_elf_find_global_pointer;
else if (native_find_global_pointer != 0)

15
gdb/infrun.c
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@ -1,4 +1,5 @@
/* Target-struct-independent code to start (run) and stop an inferior process.
/* Target-struct-independent code to start (run) and stop an inferior
process.
Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 Free Software
@ -142,12 +143,12 @@ static int may_follow_exec = MAY_FOLLOW_EXEC;
The simple approach is to single-step until control leaves the
dynamic linker.
However, on some systems (e.g., Red Hat Linux 5.2) the dynamic
linker calls functions in the shared C library, so you can't tell
from the PC alone whether the dynamic linker is still running. In
this case, we use a step-resume breakpoint to get us past the
dynamic linker, as if we were using "next" to step over a function
call.
However, on some systems (e.g., Red Hat's 5.2 distribution) the
dynamic linker calls functions in the shared C library, so you
can't tell from the PC alone whether the dynamic linker is still
running. In this case, we use a step-resume breakpoint to get us
past the dynamic linker, as if we were using "next" to step over a
function call.
IN_SOLIB_DYNSYM_RESOLVE_CODE says whether we're in the dynamic
linker code or not. Normally, this means we single-step. However,

3
gdb/linux-proc.c
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@ -1,4 +1,5 @@
/* Linux-specific methods for using the /proc file system.
/* GNU/Linux specific methods for using the /proc file system.
Copyright 2001, 2002 Free Software Foundation, Inc.
This file is part of GDB.

23
gdb/ppc-linux-tdep.c
View file

@ -1,7 +1,7 @@
/* Target-dependent code for GDB, the GNU debugger.
Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
2000, 2001 Free Software Foundation, Inc.
Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995, 1996,
1997, 2000, 2001, 2002 Free Software Foundation, Inc.
This file is part of GDB.
@ -36,7 +36,7 @@
#include "ppc-tdep.h"
/* The following two instructions are used in the signal trampoline
code on linux/ppc */
code on GNU/Linux PPC. */
#define INSTR_LI_R0_0x7777 0x38007777
#define INSTR_SC 0x44000002
@ -105,11 +105,11 @@ static int ppc_linux_at_sigtramp_return_path (CORE_ADDR pc);
/* Determine if pc is in a signal trampoline...
Ha! That's not what this does at all. wait_for_inferior in infrun.c
calls IN_SIGTRAMP in order to detect entry into a signal trampoline
just after delivery of a signal. But on linux, signal trampolines
are used for the return path only. The kernel sets things up so that
the signal handler is called directly.
Ha! That's not what this does at all. wait_for_inferior in
infrun.c calls IN_SIGTRAMP in order to detect entry into a signal
trampoline just after delivery of a signal. But on GNU/Linux,
signal trampolines are used for the return path only. The kernel
sets things up so that the signal handler is called directly.
If we use in_sigtramp2() in place of in_sigtramp() (see below)
we'll (often) end up with stop_pc in the trampoline and prev_pc in
@ -773,11 +773,12 @@ ppc_linux_memory_remove_breakpoint (CORE_ADDR addr, char *contents_cache)
}
/* Fetch (and possibly build) an appropriate link_map_offsets
structure for Linux/PPC targets using the struct offsets
structure for GNU/Linux PPC targets using the struct offsets
defined in link.h (but without actual reference to that file).
This makes it possible to access Linux/PPC shared libraries from a
GDB that was not built on an Linux/PPC host (for cross debugging). */
This makes it possible to access GNU/Linux PPC shared libraries
from a GDB that was not built on an GNU/Linux PPC host (for cross
debugging). */
struct link_map_offsets *
ppc_linux_svr4_fetch_link_map_offsets (void)

7
gdb/proc-service.c
View file

@ -1,5 +1,6 @@
/* <proc_service.h> implementation.
Copyright 1999, 2000 Free Software Foundation, Inc.
Copyright 1999, 2000, 2002 Free Software Foundation, Inc.
This file is part of GDB.
@ -294,8 +295,8 @@ ps_lsetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid,
return PS_OK;
}
/* Return overall process id of the target PH.
Special for Linux -- not used on Solaris. */
/* Return overall process id of the target PH. Special for GNU/Linux
-- not used on Solaris. */
pid_t
ps_getpid (gdb_ps_prochandle_t ph)

20
gdb/s390-tdep.c
View file

@ -1,5 +1,7 @@
/* Target-dependent code for GDB, the GNU debugger.
Copyright 2001 Free Software Foundation, Inc.
Copyright 2001, 2002 Free Software Foundation, Inc.
Contributed by D.J. Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com)
for IBM Deutschland Entwicklung GmbH, IBM Corporation.
@ -1354,7 +1356,7 @@ is_float_like (struct type *type)
/* Return non-zero if TYPE is considered a `DOUBLE_OR_FLOAT', as
defined by the parameter passing conventions described in the
"Linux for S/390 ELF Application Binary Interface Supplement".
"GNU/Linux for S/390 ELF Application Binary Interface Supplement".
Otherwise, return zero. */
static int
is_double_or_float (struct type *type)
@ -1366,8 +1368,9 @@ is_double_or_float (struct type *type)
/* Return non-zero if TYPE is considered a `SIMPLE_ARG', as defined by
the parameter passing conventions described in the "Linux for S/390
ELF Application Binary Interface Supplement". Return zero otherwise. */
the parameter passing conventions described in the "GNU/Linux for
S/390 ELF Application Binary Interface Supplement". Return zero
otherwise. */
static int
is_simple_arg (struct type *type)
{
@ -1415,8 +1418,9 @@ extend_simple_arg (struct value *arg)
/* Return non-zero if TYPE is a `DOUBLE_ARG', as defined by the
parameter passing conventions described in the "Linux for S/390 ELF
Application Binary Interface Supplement". Return zero otherwise. */
parameter passing conventions described in the "GNU/Linux for S/390
ELF Application Binary Interface Supplement". Return zero
otherwise. */
static int
is_double_arg (struct type *type)
{
@ -1487,8 +1491,8 @@ alignment_of (struct type *type)
/* Put the actual parameter values pointed to by ARGS[0..NARGS-1] in
place to be passed to a function, as specified by the "Linux for
S/390 ELF Application Binary Interface Supplement".
place to be passed to a function, as specified by the "GNU/Linux
for S/390 ELF Application Binary Interface Supplement".
SP is the current stack pointer. We must put arguments, links,
padding, etc. whereever they belong, and return the new stack