about summary refs log tree commit diff
path: root/sysdeps/alpha/elf
diff options
context:
space:
mode:
Diffstat (limited to 'sysdeps/alpha/elf')
-rw-r--r--sysdeps/alpha/elf/Dist2
-rw-r--r--sysdeps/alpha/elf/crtbegin.S91
-rw-r--r--sysdeps/alpha/elf/crtend.S92
3 files changed, 185 insertions, 0 deletions
diff --git a/sysdeps/alpha/elf/Dist b/sysdeps/alpha/elf/Dist
new file mode 100644
index 0000000000..3e7010182b
--- /dev/null
+++ b/sysdeps/alpha/elf/Dist
@@ -0,0 +1,2 @@
+crtbegin.S
+crtend.S
diff --git a/sysdeps/alpha/elf/crtbegin.S b/sysdeps/alpha/elf/crtbegin.S
new file mode 100644
index 0000000000..f75673e35f
--- /dev/null
+++ b/sysdeps/alpha/elf/crtbegin.S
@@ -0,0 +1,91 @@
+/* Copyright (C) 1996 Free Software Foundation, Inc.
+   Contributed by Richard Henderson (rth@tamu.edu)
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If
+   not, write to the Free Software Foundation, Inc.,
+   59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+
+/*
+ * Heads of the constructor/destructor lists.
+ */
+
+/* The __*TOR_LIST__ symbols are not global because when this file is used
+   in a shared library, we do not want the symbol to fall over to the
+   application's lists.  */
+
+.section .ctors,"aw"
+
+	.align 3
+__CTOR_LIST__:
+	.quad -1
+
+.section .dtors,"aw"
+
+	.align 3
+__DTOR_LIST__:
+	.quad -1
+
+
+/*
+ * Fragment of the ELF _fini routine that invokes our dtor cleanup.
+ */
+
+.section .fini,"ax"
+
+	/* Since the bits of the _fini function are spread across many
+	   object files, each potentially with its own GP, we must
+	   assume we need to load ours.  Further, our .fini section
+	   can easily be more than 4MB away from our .text bits so we
+	   can't use bsr.  */
+
+	br      $gp,1f
+1:	ldgp    $gp,0($gp)
+	jsr     $26,__do_global_dtors_aux
+
+	/* Must match the alignment we got from crti.o else we get
+	  zero-filled holes in our _fini function and thense SIGILL.  */
+	.align 3
+
+/*
+ * Invoke our destructors in order.
+ */
+
+.text
+
+	.align 3
+	.ent __do_global_dtors_aux
+
+__do_global_dtors_aux:
+	.frame  $sp,16,$26,0
+	/* GP already loaded in .fini */
+	lda     $sp,-16($sp)
+	stq     $9,8($sp)
+	stq     $26,0($sp)
+	.mask   (1<<26)|(1<<9), -16
+	.prologue 1
+
+	lda     $9,__DTOR_LIST__
+	br      1f
+0:	jsr     $26,($27)
+1:	ldq     $27,8($9)
+	addq    $9,8,$9
+	bne     $27,0b
+
+	ldq     $26,0($sp)
+	ldq     $9,8($sp)
+	lda     $sp,16($sp)
+	ret
+
+	.end __do_global_dtors_aux
diff --git a/sysdeps/alpha/elf/crtend.S b/sysdeps/alpha/elf/crtend.S
new file mode 100644
index 0000000000..7f51d81da1
--- /dev/null
+++ b/sysdeps/alpha/elf/crtend.S
@@ -0,0 +1,92 @@
+/* Copyright (C) 1996 Free Software Foundation, Inc.
+   Contributed by Richard Henderson (rth@tamu.edu)
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If
+   not, write to the Free Software Foundation, Inc.,
+   59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+
+/*
+ * Tails of the constructor/destructor lists.
+ */
+
+/* The __*TOR_END__ symbols are not global because when this file is used
+   in a shared library, we do not want the symbol to fall over to the
+   application's lists.  */
+
+.section .ctors,"aw"
+
+	.align 3
+__CTOR_END__:
+	.quad   0
+
+.section .dtors,"aw"
+
+	.align 3
+__DTOR_END__:
+	.quad   0
+
+
+/*
+ * Fragment of the ELF _init routine that invokes our ctor startup
+ */
+
+.section .init,"ax"
+
+	/* Since the bits of the _init function are spread across many
+	   object files, each potentially with its own GP, we must
+	   assume we need to load ours.  Further, our .init section
+	   can easily be more than 4MB away from our .text bits so we
+	   can't use bsr.  */
+
+	br      $gp,1f
+1:	ldgp    $gp,0($gp)
+	jsr     $26,__do_global_ctors_aux
+
+	/* Must match the alignment we got from crti.o else we get
+	   zero-filled holes in our _init function and thense SIGILL.  */
+	.align 3
+
+/*
+ * Invoke our destructors in order.
+ */
+
+.text
+
+	.align 3
+	.ent __do_global_ctors_aux
+
+__do_global_ctors_aux:
+	.frame  $sp,16,$26,0
+	/* GP already loaded in .init.  */
+	lda     $sp,-16($sp)
+	stq     $9,8($sp)
+	stq     $26,0($sp)
+	.mask   (1<<26)|(1<<9), -16
+	.prologue 1
+
+	lda     $9,__CTOR_END__
+	br      1f
+0:	jsr     $26,($27)
+1:	ldq     $27,-8($9)
+	subq    $9,8,$9
+	not     $27,$0
+	bne     $0,0b
+
+	ldq     $26,0($sp)
+	ldq     $9,8($sp)
+	lda     $sp,16($sp)
+	ret
+
+	.end __do_global_ctors_aux