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yann@1
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Sender: libc-alpha-owner@sources.redhat.com
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yann@1
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Date: Tue, 29 Jul 2003 17:49:47 -0400
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yann@1
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From: Daniel Jacobowitz <drow@mvista.com>
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yann@1
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To: GNU C Library <libc-alpha@sources.redhat.com>
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yann@1
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Subject: Re: __sim_exceptions undefined when linking glibc-2.3.2's libm.so with --without-fp
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yann@1
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Message-ID: <20030729214947.GA29932@nevyn.them.org>
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yann@1
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yann@1
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On Tue, Jul 29, 2003 at 02:53:33PM -0700, Dan Kegel wrote:
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yann@1
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> On ppc405, I'm getting the following when linking glibc's libm:
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yann@1
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> /gcc-3.3-glibc-2.3.2/build-glibc/math/libm_pic.a(fclrexcpt.os)(.text+0x1a):
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> In function `feclearexcept@GLIBC_2.1':
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yann@1
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> : undefined reference to `__sim_exceptions'
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yann@1
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>
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> That symbol seems to be present in libc.so. nm shows
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yann@1
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yann@1
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--without-fp doesn't work. Try this. Make up a changelog entry if it
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yann@1
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works.
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yann@1
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yann@1
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Date: Tue, 29 Jul 2003 14:56:50 -0700
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yann@1
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Message-Id: <200307292156.h6TLuol24356@magilla.sf.frob.com>
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yann@1
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From: Roland McGrath <roland@redhat.com>
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yann@1
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To: Daniel Jacobowitz <drow@mvista.com>
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yann@1
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Cc: GNU C Library <libc-alpha@sources.redhat.com>
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yann@1
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Subject: Re: __sim_exceptions undefined when linking glibc-2.3.2's libm.so with --without-fp
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yann@1
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In-Reply-To: Daniel Jacobowitz's message of Tuesday, 29 July 2003 17:49:47 -0400 <20030729214947.GA29932@nevyn.them.org>
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yann@1
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> +int __sim_exceptions __attribute__ ((section(".bss")));
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yann@1
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yann@1
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Use __attribute__ ((nocommon)) instead (and please watch the standard
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whitespace conventions, i.e. ``section ('').
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diff -purN glibc-2.3.2.orig/sysdeps/powerpc/nofpu/sim-full.c glibc-2.3.2/sysdeps/powerpc/nofpu/sim-full.c
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--- glibc-2.3.2.orig/sysdeps/powerpc/nofpu/sim-full.c 2002-10-19 16:06:29.000000000 -0400
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+++ glibc-2.3.2/sysdeps/powerpc/nofpu/sim-full.c 2003-05-14 15:10:42.000000000 -0400
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@@ -24,11 +24,14 @@
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/* Global to store sticky exceptions. */
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-int __sim_exceptions;
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+int __sim_exceptions __attribute__ ((nocommon));
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+libc_hidden_data_def (__sim_exceptions);
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/* By default, no exceptions should trap. */
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int __sim_disabled_exceptions = 0xffffffff;
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+libc_hidden_data_def (__sim_disabled_exceptions);
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-int __sim_round_mode;
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+int __sim_round_mode __attribute__ ((nocommon));
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+libc_hidden_data_def (__sim_round_mode);
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void
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__simulate_exceptions (int x)
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diff -purN glibc-2.3.2.orig/sysdeps/powerpc/nofpu/soft-supp.h glibc-2.3.2/sysdeps/powerpc/nofpu/soft-supp.h
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--- glibc-2.3.2.orig/sysdeps/powerpc/nofpu/soft-supp.h 2002-10-19 16:06:29.000000000 -0400
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yann@1
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+++ glibc-2.3.2/sysdeps/powerpc/nofpu/soft-supp.h 2003-05-14 15:09:53.000000000 -0400
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@@ -27,7 +27,11 @@ typedef union
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} fenv_union_t;
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-extern int __sim_exceptions attribute_hidden;
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-extern int __sim_disabled_exceptions attribute_hidden;
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-extern int __sim_round_mode attribute_hidden;
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+extern int __sim_exceptions;
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+libc_hidden_proto (__sim_exceptions);
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+extern int __sim_disabled_exceptions;
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+libc_hidden_proto (__sim_disabled_exceptions);
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+extern int __sim_round_mode;
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+libc_hidden_proto (__sim_round_mode);
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+
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extern void __simulate_exceptions (int x) attribute_hidden;
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diff -urp glibc-2.3.2.orig/sysdeps/powerpc/soft-fp/sfp-machine.h glibc-2.3.2/sysdeps/powerpc/soft-fp/sfp-machine.h
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--- glibc-2.3.2.orig/sysdeps/powerpc/soft-fp/sfp-machine.h 2002-10-17 18:36:14.000000000 -0400
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+++ glibc-2.3.2/sysdeps/powerpc/soft-fp/sfp-machine.h 2003-05-14 16:48:13.000000000 -0400
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@@ -52,7 +52,11 @@
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#define FP_HANDLE_EXCEPTIONS __simulate_exceptions (_fex)
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#define FP_ROUNDMODE __sim_round_mode
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-extern int __sim_exceptions attribute_hidden;
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-extern int __sim_disabled_exceptions attribute_hidden;
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-extern int __sim_round_mode attribute_hidden;
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+extern int __sim_exceptions;
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+libc_hidden_proto (__sim_exceptions);
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+extern int __sim_disabled_exceptions;
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+libc_hidden_proto (__sim_disabled_exceptions);
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+extern int __sim_round_mode;
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+libc_hidden_proto (__sim_round_mode);
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+
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extern void __simulate_exceptions (int x) attribute_hidden;
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