multi-arched Linux target

multi-arched Linux target

[Kei Sakamoto]

Hello,

I have a question about multi-arched Linux target.

I'm implementing the native debug support on Linux/M32R.
http://www.linux-m32r.org

In order to support Linux target, config/tm-linux.h is necessary.
But config/tm-linux.h causes build errors in full multi-arched
environment because SKIP_TRAMPOLINE_CODE and IN_SOLIG_CALL_TRAMPOLINE
don't have multi-arch definitions.

In file included from ../../src/gdb/defs.h:1135,
                 from ../../src/gdb/gdb.c:21:
../../src/gdb/gdbarch.h:2071:2: #error "Non multi-arch definition of
SKIP_TRAMPOLINE_CODE"
../../src/gdb/gdbarch.h:2093:2: #error "Non multi-arch definition of
IN_SOLIB_CALL_TRAMPOLINE"

Do I have to use MULTI_ARCH_PARTIAL for Linux target?

===
Kei Sakamoto
Renesas Technology Corp.
sakamoto.kei@renesas.com

Re: multi-arched Linux target

[Kei Sakamoto]

Hello,

Does anyone have any suggestion about this?
Thank you.

Kei Sakamoto

From: "Kei Sakamoto" <sakamoto.kei@renesas.com>
To: <gdb@sourceware.org>
Sent: Wednesday, July 28, 2004 12:04 PM
Subject: multi-arched Linux target


> Hello,
> 
> I have a question about multi-arched Linux target.
> 
> I'm implementing the native debug support on Linux/M32R.
> http://www.linux-m32r.org
> 
> In order to support Linux target, config/tm-linux.h is necessary.
> But config/tm-linux.h causes build errors in full multi-arched
> environment because SKIP_TRAMPOLINE_CODE and IN_SOLIG_CALL_TRAMPOLINE
> don't have multi-arch definitions.
> 
> In file included from ../../src/gdb/defs.h:1135,
>                  from ../../src/gdb/gdb.c:21:
> ../../src/gdb/gdbarch.h:2071:2: #error "Non multi-arch definition of
> SKIP_TRAMPOLINE_CODE"
> ../../src/gdb/gdbarch.h:2093:2: #error "Non multi-arch definition of
> IN_SOLIB_CALL_TRAMPOLINE"
> 
> Do I have to use MULTI_ARCH_PARTIAL for Linux target?
> 
> ===
> Kei Sakamoto
> Renesas Technology Corp.
> sakamoto.kei@renesas.com
> 

Re: multi-arched Linux target

[Jim Blandy]

"Kei Sakamoto" <sakamoto.kei@renesas.com> writes:
> > I have a question about multi-arched Linux target.
> > 
> > I'm implementing the native debug support on Linux/M32R.
> > http://www.linux-m32r.org
> > 
> > In order to support Linux target, config/tm-linux.h is necessary.
> > But config/tm-linux.h causes build errors in full multi-arched
> > environment because SKIP_TRAMPOLINE_CODE and IN_SOLIG_CALL_TRAMPOLINE
> > don't have multi-arch definitions.
> > 
> > In file included from ../../src/gdb/defs.h:1135,
> >                  from ../../src/gdb/gdb.c:21:
> > ../../src/gdb/gdbarch.h:2071:2: #error "Non multi-arch definition of
> > SKIP_TRAMPOLINE_CODE"
> > ../../src/gdb/gdbarch.h:2093:2: #error "Non multi-arch definition of
> > IN_SOLIB_CALL_TRAMPOLINE"
> > 
> > Do I have to use MULTI_ARCH_PARTIAL for Linux target?

I think so.  You'll need to have a tm-*.h file, which automatically
brings you down to MULTI_ARCH_PARTIAL.  You don't need to actually
#define that anywhere, though; just having a tm-*.h file at all
automatically sets that.  Search for GDB_TM_FILE in defs.h.

But I don't think that'll cause you any problems.  Since you're not
overriding them, it won't affect any of the definitions you're
currently getting from gdbarch.h.  Things should just continue to work
normally.

Re: multi-arched Linux target

[Kei Sakamoto]

> > > Do I have to use MULTI_ARCH_PARTIAL for Linux target?
> 
> I think so.  You'll need to have a tm-*.h file, which automatically
> brings you down to MULTI_ARCH_PARTIAL.  You don't need to actually
> #define that anywhere, though; just having a tm-*.h file at all
> automatically sets that.  Search for GDB_TM_FILE in defs.h.
> 
> But I don't think that'll cause you any problems.  Since you're not
> overriding them, it won't affect any of the definitions you're
> currently getting from gdbarch.h.  Things should just continue to work
> normally.

I see. I'll use MULTI_ARCH_PARTIAL.
Thank you.

===
Kei Sakamoto
Renesas Technology Corp.
sakamoto.kei@renesas.com