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authorUlrich Drepper <drepper@redhat.com>2001-04-10 23:12:08 +0000
committerUlrich Drepper <drepper@redhat.com>2001-04-10 23:12:08 +0000
commita16956f331fb4cfc5aca0648fa099355f11dc182 (patch)
tree7641c38b9e85430a05150a4e5fc0e0a4cd12b14d /sysdeps/ia64
parent58f46c794a3dc049ae8c53dab76d83ea23408479 (diff)
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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.
Diffstat (limited to 'sysdeps/ia64')
-rw-r--r--sysdeps/ia64/elf/entry.h7
-rw-r--r--sysdeps/ia64/elf/start.S45
2 files changed, 38 insertions, 14 deletions
diff --git a/sysdeps/ia64/elf/entry.h b/sysdeps/ia64/elf/entry.h
new file mode 100644
index 0000000..53ea9a2
--- /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 5ba6196..cc8b798 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