aboutsummaryrefslogtreecommitdiff
path: root/sysdeps/alpha/elf/initfini.c
diff options
context:
space:
mode:
authorUlrich Drepper <drepper@redhat.com>2001-09-01 19:24:55 +0000
committerUlrich Drepper <drepper@redhat.com>2001-09-01 19:24:55 +0000
commit1bc83d2bb213bb32d8f7ae42595bbc1fec91094e (patch)
tree2b680473931c42b3a6a967f5318a795ced7a0e4f /sysdeps/alpha/elf/initfini.c
parent9a1f71a7238deea567c3e3bd95c8ec5fd973f54d (diff)
downloadglibc-1bc83d2bb213bb32d8f7ae42595bbc1fec91094e.tar
glibc-1bc83d2bb213bb32d8f7ae42595bbc1fec91094e.tar.gz
glibc-1bc83d2bb213bb32d8f7ae42595bbc1fec91094e.tar.bz2
glibc-1bc83d2bb213bb32d8f7ae42595bbc1fec91094e.zip
Update.
2001-09-01 Richard Henderson <rth@redhat.com> * sysdeps/alpha/elf/Dist: Remove file. * sysdeps/alpha/elf/Makefile: Remove file. * sysdeps/alpha/elf/crtbegin.S: Remove file. * sysdeps/alpha/elf/crtend.S: Remove file. * sysdeps/alpha/elf/initfini.c: New file. 2001-09-01 Mark Kettenis <kettenis@gnu.org> * iconv/tst-iconv1.c: Include <stddef.h> for wchar_t. * iconv/tst-iconv3.c: Likewise. 2001-09-01 Jakub Jelinek <jakub@redhat.com> * sysdeps/generic/inttypes.h (__gwchar_t): Define to wchar_t for C++. handle it like 'I' for symmetry with strftime.
Diffstat (limited to 'sysdeps/alpha/elf/initfini.c')
-rw-r--r--sysdeps/alpha/elf/initfini.c98
1 files changed, 98 insertions, 0 deletions
diff --git a/sysdeps/alpha/elf/initfini.c b/sysdeps/alpha/elf/initfini.c
new file mode 100644
index 0000000000..e1c0f1c4d6
--- /dev/null
+++ b/sysdeps/alpha/elf/initfini.c
@@ -0,0 +1,98 @@
+/* Special .init and .fini section support for Alpha.
+ Copyright (C) 2001 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+/* This file is compiled into assembly code which is then munged by a sed
+ script into two files: crti.s and crtn.s.
+
+ * crti.s puts a function prologue at the beginning of the .init and .fini
+ sections and defines global symbols for those addresses, so they can be
+ called as functions.
+
+ * crtn.s puts the corresponding function epilogues in the .init and .fini
+ sections.
+
+ This differs from what would be generated by the generic code in that
+ we save and restore the GP within the function. In order for linker
+ relaxation to work, the value in the GP register on exit from a function
+ must be valid for the function entry point. Normally, a function is
+ contained within one object file and this is not an issue, provided
+ that the function reloads the gp after making any function calls.
+ However, _init and _fini are constructed from pieces of many object
+ files, all of which may have different GP values. So we must reload
+ the GP value from crti.o in crtn.o. */
+
+__asm__ ("
+
+#include \"defs.h\"
+
+/*@HEADER_ENDS*/
+
+/*@_init_PROLOG_BEGINS*/
+ .section .init, \"ax\", @progbits
+ .globl _init
+ .ent _init
+_init:
+ ldgp $29, 0($27)
+ subq $30, 16, $30
+ lda $27, __gmon_start__
+ stq $26, 0($30)
+ stq $29, 8($30)
+ .prologue 1
+ beq $27, 1f
+ jsr $26, ($27), __gmon_start__
+ ldq $29, 8($30)
+1:
+ .align 3
+ .end _init
+ .size _init, 0
+/*@_init_PROLOG_ENDS*/
+
+/*@_init_EPILOG_BEGINS*/
+ .section .init, \"ax\", @progbits
+ ldq $26, 0($30)
+ ldq $29, 8($30)
+ addq $30, 16, $30
+ ret
+/*@_init_EPILOG_ENDS*/
+
+/*@_fini_PROLOG_BEGINS*/
+ .section .fini, \"ax\", @progbits
+ .globl _fini
+ .ent _fini
+_fini:
+ ldgp $29, 0($27)
+ subq $30, 16, $30
+ stq $26, 0($30)
+ stq $29, 8($30)
+ .prologue 1
+ .align 3
+ .end _fini
+ .size _fini, 0
+/*@_fini_PROLOG_ENDS*/
+
+/*@_fini_EPILOG_BEGINS*/
+ .section .fini, \"ax\", @progbits
+ ldq $26, 0($30)
+ ldq $29, 8($30)
+ addq $30, 16, $30
+ ret
+/*@_fini_EPILOG_ENDS*/
+
+/*@TRAILER_BEGINS*/
+");