Update.

2001-04-10  Andreas Schwab  <schwab@suse.de>

	* math/libm-test.inc (csinh_test): Don't require the invalid
	exception for csinh (x + iNaN), but make it optional.

2001-04-09  David Mosberger  <davidm@hpl.hp.com>

	* sysdeps/ia64/elf/start.S (_start): Add unwind directives.

	* sysdeps/generic/entry.h [!__ASSEMBLY__]: Declare _start.
	* sysdeps/ia64/elf/entry.h: New file.
	* sysdeps/unix/sysv/linux/mips/entry.h [!__ASSEMBLY__]: Declare
	__start.
	* elf/rtld.c: Don't declare ENTRY_POINT.  Use ENTRY_POINT instead
	of &ENTRY_POINT.
	* sysdeps/generic/dl-sysdep.c: Likewise.
	* sysdeps/mach/hurd/dl-sysdep.c: Likewise.
	* sysdeps/ia64/elf/start.S: Save base address of register backing
	store in __libc_ia64_register_backing_store_base.

6 files changed, 50 insertions, 20 deletions

diff --git a/sysdeps/generic/dl-sysdep.c b/sysdeps/generic/dl-sysdep.c
index 3dc76257a7..d1acaeedca 100644
--- a/sysdeps/generic/dl-sysdep.c
+++ b/sysdeps/generic/dl-sysdep.c
@@ -46,7 +46,6 @@ extern unsigned long int _dl_hwcap;
 extern size_t _dl_platformlen;
 extern fpu_control_t _dl_fpu_control;
 extern void _end;
-extern void ENTRY_POINT (void);
 
 /* Protect SUID program against misuse of file descriptors.  */
 extern void __libc_check_standard_fds (void);
@@ -101,7 +100,7 @@ _dl_sysdep_start (void **start_argptr,
   DL_FIND_ARG_COMPONENTS (start_argptr, _dl_argc, _dl_argv, _environ,
 			  _dl_auxv);
 
-  user_entry = (ElfW(Addr)) &ENTRY_POINT;
+  user_entry = (ElfW(Addr)) ENTRY_POINT;
   _dl_platform = NULL; /* Default to nothing known about the platform.  */
 
   for (av = _dl_auxv; av->a_type != AT_NULL; set_seen (av++))
diff --git a/sysdeps/generic/entry.h b/sysdeps/generic/entry.h
index cc0e1d88ab..2f17ce8a4b 100644
--- a/sysdeps/generic/entry.h
+++ b/sysdeps/generic/entry.h
@@ -1 +1,5 @@
+#ifndef __ASSEMBLY__
+extern void _start (void);
+#endif
+
 #define ENTRY_POINT _start
diff --git a/sysdeps/ia64/elf/entry.h b/sysdeps/ia64/elf/entry.h
new file mode 100644
index 0000000000..53ea9a2297
--- /dev/null
+++ b/sysdeps/ia64/elf/entry.h
@@ -0,0 +1,7 @@
+#ifndef __ASSEMBLY__
+extern void _start (void);
+#endif
+
+/* The function's entry point is stored in the first word of the
+   function descriptor (plabel) of _start().  */
+#define ENTRY_POINT (((long int *) _start)[0])
diff --git a/sysdeps/ia64/elf/start.S b/sysdeps/ia64/elf/start.S
index 5ba6196e3c..cc8b798b37 100644
--- a/sysdeps/ia64/elf/start.S
+++ b/sysdeps/ia64/elf/start.S
@@ -17,6 +17,8 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
+#include <sysdep.h>
+
 #include <asm/unistd.h>
 #include <asm/fpu.h>
 
@@ -31,10 +33,12 @@
  *	out6:	stack_end
  */
 
-	.global	_start
-	.proc	_start
+	.align 32
+	.global _start
 
+	.proc _start
 _start:
+	.prologue
 	{ .mlx
 	  alloc r2 = ar.pfs,0,0,7,0
 	  movl r3 = FPSR_DEFAULT
@@ -44,38 +48,46 @@ _start:
 	  movl gp = @gprel(0f)
 	  ;;
 	}
-0:	{ .mii
+0:	{ .mmi
 	  ld8 out1 = [out2], 8	/* load argc and move out2 to become argv */
+	  mov.m r10 = ar.bsp	/* fetch rbs base address */
 	  mov r9 = ip
 	  ;;
+	}
+	{ .mii
+	  mov ar.fpsr = r3
 	  sub gp = r9, gp	/* back-compute gp value */
+	  adds out6 = 16, sp	/* highest non-environment stack address */
 	  ;;
 	}
-	{ .mfi
-	  mov ar.fpsr = r3
+	{
+	  addl r11 = @ltoff(__libc_ia64_register_backing_store_base), gp
 	  addl out0 = @ltoff(@fptr(main)), gp
-	}
-	{ .mfi
-	  addl out4 = @ltoff(@fptr(_fini)), gp
 	  addl out3 = @ltoff(@fptr(_init)), gp
 	  ;;
 	}
 	{ .mmi
+	  ld8 r3 = [r11]	/* pointer to __libc_ia64_register_backing_store_base */
 	  ld8 out0 = [out0]	/* pointer to `main' function descriptor */
+	  addl out4 = @ltoff(@fptr(_fini)), gp
+	  ;;
+	}
+	{ .mmi
 	  ld8 out3 = [out3]	/* pointer to `init' function descriptor */
-	  adds out6 = 16, sp	/* highest non-environment stack address */
+	  ld8 out4 = [out4]	/* pointer to `fini' function descriptor */
+	  .save rp, r4
+	  mov r4 = r0		/* terminate unwind chain with a NULL return-pointer */
 	}
+	.body
 	{ .mib
-	  ld8 out4 = [out4]	/* pointer to `fini' function descriptor */
+	  st8 [r3] = r10
 	  mov out5 = ret0	/* dynamic linker destructor */
 	  br.call.sptk.few rp = __libc_start_main
 	}
 	{ .mib
-	  mov rp = r0
-	  br.ret.sptk.few rp	/* break miserably if we ever return */
-	  ;;
+	  break 0	/* break miserably if we ever return */
 	}
-	.endp	_start
+	.endp _start
 
 /* Define a symbol for the first piece of initialized data.  */
 	.data
@@ -84,3 +96,8 @@ __data_start:
 	.long 0
 	.weak data_start
 	data_start = __data_start
+
+	.global __libc_ia64_register_backing_store_base
+	.align 8
+__libc_ia64_register_backing_store_base:
+	.space 8
diff --git a/sysdeps/mach/hurd/dl-sysdep.c b/sysdeps/mach/hurd/dl-sysdep.c
index 25ae5bbc68..8bcce13588 100644
--- a/sysdeps/mach/hurd/dl-sysdep.c
+++ b/sysdeps/mach/hurd/dl-sysdep.c
@@ -47,7 +47,6 @@ extern void __mach_init (void);
 extern int _dl_argc;
 extern char **_dl_argv;
 extern char **_environ;
-extern void ENTRY_POINT (void);
 
 int __libc_enable_secure;
 int __libc_multiple_libcs = 0;	/* Defining this here avoids the inclusion
@@ -119,7 +118,7 @@ _dl_sysdep_start (void **start_argptr,
 	{
 	  static struct hurd_startup_data nodata;
 	  _dl_hurd_data = &nodata;
-	  nodata.user_entry = (vm_address_t) &ENTRY_POINT;
+	  nodata.user_entry = (vm_address_t) ENTRY_POINT;
 	}
       else
 	_dl_hurd_data = (void *) p;
@@ -128,12 +127,12 @@ _dl_sysdep_start (void **start_argptr,
 
       if (_dl_hurd_data->flags & EXEC_STACK_ARGS &&
 	  _dl_hurd_data->user_entry == 0)
-	_dl_hurd_data->user_entry = (vm_address_t) &ENTRY_POINT;
+	_dl_hurd_data->user_entry = (vm_address_t) ENTRY_POINT;
 
 unfmh();			/* XXX */
 
 #if 0				/* XXX make this work for real someday... */
-      if (_dl_hurd_data->user_entry == (vm_address_t) &ENTRY_POINT)
+      if (_dl_hurd_data->user_entry == (vm_address_t) ENTRY_POINT)
 	/* We were invoked as a command, not as the program interpreter.
 	   The generic ld.so code supports this: it will parse the args
 	   as "ld.so PROGRAM [ARGS...]".  For booting the Hurd, we
diff --git a/sysdeps/unix/sysv/linux/mips/entry.h b/sysdeps/unix/sysv/linux/mips/entry.h
index 3db6d93636..04d05d2b0a 100644
--- a/sysdeps/unix/sysv/linux/mips/entry.h
+++ b/sysdeps/unix/sysv/linux/mips/entry.h
@@ -1 +1,5 @@
+#ifndef __ASSEMBLY__
+extern void __start (void);
+#endif
+
 #define ENTRY_POINT __start