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Re: __sim_exceptions undefined when linking glibc-2.3.2's libm.so with --without-fp
- From: Daniel Jacobowitz <drow at mvista dot com>
- To: GNU C Library <libc-alpha at sources dot redhat dot com>
- Date: Tue, 29 Jul 2003 17:49:47 -0400
- Subject: Re: __sim_exceptions undefined when linking glibc-2.3.2's libm.so with --without-fp
- References: <3F26ECDD.5050906@kegel.com>
On Tue, Jul 29, 2003 at 02:53:33PM -0700, Dan Kegel wrote:
> On ppc405, I'm getting the following when linking glibc's libm:
> /gcc-3.3-glibc-2.3.2/build-glibc/math/libm_pic.a(fclrexcpt.os)(.text+0x1a):
> In function `feclearexcept@GLIBC_2.1':
> : undefined reference to `__sim_exceptions'
>
> That symbol seems to be present in libc.so. nm shows
--without-fp doesn't work. Try this. Make up a changelog entry if it
works.
--
Daniel Jacobowitz
MontaVista Software Debian GNU/Linux Developer
diff -purN glibc-2.3.2.orig/sysdeps/powerpc/nofpu/sim-full.c glibc-2.3.2/sysdeps/powerpc/nofpu/sim-full.c
--- glibc-2.3.2.orig/sysdeps/powerpc/nofpu/sim-full.c 2002-10-19 16:06:29.000000000 -0400
+++ glibc-2.3.2/sysdeps/powerpc/nofpu/sim-full.c 2003-05-14 15:10:42.000000000 -0400
@@ -24,11 +24,14 @@
/* Global to store sticky exceptions. */
-int __sim_exceptions;
+int __sim_exceptions __attribute__ ((section(".bss")));
+libc_hidden_data_def (__sim_exceptions);
/* By default, no exceptions should trap. */
int __sim_disabled_exceptions = 0xffffffff;
+libc_hidden_data_def (__sim_disabled_exceptions);
-int __sim_round_mode;
+int __sim_round_mode __attribute__ ((section(".bss")));
+libc_hidden_data_def (__sim_round_mode);
void
__simulate_exceptions (int x)
diff -purN glibc-2.3.2.orig/sysdeps/powerpc/nofpu/soft-supp.h glibc-2.3.2/sysdeps/powerpc/nofpu/soft-supp.h
--- glibc-2.3.2.orig/sysdeps/powerpc/nofpu/soft-supp.h 2002-10-19 16:06:29.000000000 -0400
+++ glibc-2.3.2/sysdeps/powerpc/nofpu/soft-supp.h 2003-05-14 15:09:53.000000000 -0400
@@ -27,7 +27,11 @@ typedef union
} fenv_union_t;
-extern int __sim_exceptions attribute_hidden;
-extern int __sim_disabled_exceptions attribute_hidden;
-extern int __sim_round_mode attribute_hidden;
+extern int __sim_exceptions;
+libc_hidden_proto (__sim_exceptions);
+extern int __sim_disabled_exceptions;
+libc_hidden_proto (__sim_disabled_exceptions);
+extern int __sim_round_mode;
+libc_hidden_proto (__sim_round_mode);
+
extern void __simulate_exceptions (int x) attribute_hidden;
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
--- glibc-2.3.2.orig/sysdeps/powerpc/soft-fp/sfp-machine.h 2002-10-17 18:36:14.000000000 -0400
+++ glibc-2.3.2/sysdeps/powerpc/soft-fp/sfp-machine.h 2003-05-14 16:48:13.000000000 -0400
@@ -52,7 +52,11 @@
#define FP_HANDLE_EXCEPTIONS __simulate_exceptions (_fex)
#define FP_ROUNDMODE __sim_round_mode
-extern int __sim_exceptions attribute_hidden;
-extern int __sim_disabled_exceptions attribute_hidden;
-extern int __sim_round_mode attribute_hidden;
+extern int __sim_exceptions;
+libc_hidden_proto (__sim_exceptions);
+extern int __sim_disabled_exceptions;
+libc_hidden_proto (__sim_disabled_exceptions);
+extern int __sim_round_mode;
+libc_hidden_proto (__sim_round_mode);
+
extern void __simulate_exceptions (int x) attribute_hidden;