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110 lines
3.5 KiB
C
110 lines
3.5 KiB
C
/* Special .init and .fini section support for HPPA. Linuxthreads version.
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Copyright (C) 2001, 2003 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it
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and/or modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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In addition to the permissions in the GNU Lesser General Public
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License, the Free Software Foundation gives you unlimited
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permission to link the compiled version of this file with other
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programs, and to distribute those programs without any restriction
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coming from the use of this file. (The Lesser General Public
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License restrictions do apply in other respects; for example, they
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cover modification of the file, and distribution when not linked
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into another program.)
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The GNU C Library is distributed in the hope that it will be
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useful, but WITHOUT ANY WARRANTY; without even the implied warranty
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of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* This file is compiled into assembly code which is then munged by a sed
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script into two files: crti.s and crtn.s.
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* crti.s puts a function prologue at the beginning of the
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.init and .fini sections and defines global symbols for
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those addresses, so they can be called as functions.
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* crtn.s puts the corresponding function epilogues
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in the .init and .fini sections. */
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/* If we use the standard C version, the linkage table pointer won't
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be properly preserved due to the splitting up of function prologues
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and epilogues. Therefore we write these in assembly to make sure
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they do the right thing. */
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__asm__ (
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"#include \"defs.h\"\n"
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"\n"
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"/*@HEADER_ENDS*/\n"
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"\n"
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"/*@_init_PROLOG_BEGINS*/\n"
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" .section .init\n"
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" .align 4\n"
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" .globl _init\n"
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" .type _init,@function\n"
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"_init:\n"
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" stw %rp,-20(%sp)\n"
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" stwm %r4,64(%sp)\n"
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" stw %r19,-32(%sp)\n"
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" bl __pthread_initialize_minimal,%rp\n"
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" copy %r19,%r4 /* delay slot */\n"
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" copy %r4,%r19\n"
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"/*@_init_PROLOG_ENDS*/\n"
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"\n"
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"/*@_init_EPILOG_BEGINS*/\n"
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"/* Here is the tail end of _init. */\n"
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" .section .init\n"
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" ldw -84(%sp),%rp\n"
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" copy %r4,%r19\n"
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" bv %r0(%rp)\n"
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"_end_init:\n"
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" ldwm -64(%sp),%r4\n"
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"\n"
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"/* Our very own unwind info, because the assembler can't handle\n"
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" functions split into two or more pieces. */\n"
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" .section .PARISC.unwind,\"a\",@progbits\n"
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" .extern _init\n"
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" .word _init, _end_init\n"
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" .byte 0x08, 0x01, 0x00, 0x08, 0x00, 0x00, 0x00, 0x08\n"
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"\n"
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"/*@_init_EPILOG_ENDS*/\n"
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"\n"
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"/*@_fini_PROLOG_BEGINS*/\n"
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" .section .fini\n"
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" .align 4\n"
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" .globl _fini\n"
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" .type _fini,@function\n"
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"_fini:\n"
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" stw %rp,-20(%sp)\n"
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" stwm %r4,64(%sp)\n"
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" stw %r19,-32(%sp)\n"
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" copy %r19,%r4\n"
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"/*@_fini_PROLOG_ENDS*/\n"
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"\n"
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"/*@_fini_EPILOG_BEGINS*/\n"
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" .section .fini\n"
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" ldw -84(%sp),%rp\n"
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" copy %r4,%r19\n"
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" bv %r0(%rp)\n"
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"_end_fini:\n"
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" ldwm -64(%sp),%r4\n"
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"\n"
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" .section .PARISC.unwind,\"a\",@progbits\n"
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" .extern _fini\n"
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" .word _fini, _end_fini\n"
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" .byte 0x08, 0x01, 0x00, 0x08, 0x00, 0x00, 0x00, 0x08\n"
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"\n"
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"/*@_fini_EPILOG_ENDS*/\n"
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"\n"
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"/*@TRAILER_BEGINS*/\n"
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);
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