/* Prepare arguments for library initialization function. Copyright (C) 1997 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 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. */ /* The job of this fragment it to find argc and friends for INIT. This is done in one of two ways: either in the stack context of program start, or having dlopen pass them in. */ #include #define __S1(x) #x #define __S(x) __S1(x) #ifdef PIC #define SYSDEP_CALL_INIT(NAME, INIT) asm("\ .weak _dl_starting_up .global " #NAME " .type " #NAME ",@function " #NAME ": save %sp, -64, %sp 1: call 11f sethi %hi(_GLOBAL_OFFSET_TABLE_-(1b-.)), %l7 11: or %l7, %lo(_GLOBAL_OFFSET_TABLE_-(1b-.)), %l7 add %l7, %o7, %l7 /* Are we a dynamic libc being loaded into a static program? */ sethi %hi(_dl_starting_up), %l2 or %l2, %lo(_dl_starting_up), %l2 ld [%l7+%l2], %l2 cmp %l2, 0 beq 3f sethi %hi(__libc_multiple_libcs), %l3 ld [%l2], %l2 subcc %g0, %l2, %g0 subx %g0, -1, %l2 3: or %l3, %lo(__libc_multiple_libcs), %l3 ld [%l7+%l3], %l3 cmp %l2, 0 st %l2, [%l3] /* If so, argc et al are in %o0-%o2 already. Otherwise, load them. */ bnz " #INIT " restore ld [%sp+22*4], %o0 add %sp, 23*4, %o1 sll %o0, 2, %o2 add %o2, %o1, %o2 ba " #INIT " add %o2, 4, %o2 .size "#NAME ", .-" #NAME); #else #define SYSDEP_CALL_INIT(NAME, INIT) asm("\ .weak _dl_starting_up .global " #NAME " .type " #NAME ",@function " #NAME ": /* Are we a dynamic libc being loaded into a static program? */ sethi %hi(_dl_starting_up), %g2 or %g2, %lo(_dl_starting_up), %g2 cmp %g2, 0 beq 3f sethi %hi(__libc_multiple_libcs), %g3 ld [%g2], %g2 subcc %g0, %g2, %g0 subx %g0, -1, %g2 3: or %g3, %lo(__libc_multiple_libcs), %g3 cmp %g2, 0 st %g2, [%g3] /* If so, argc et al are in %o0-%o2 already. Otherwise, load them. */ bnz " #INIT " nop ld [%sp+22*4], %o0 add %sp, 23*4, %o1 sll %o0, 2, %o2 add %o2, %o1, %o2 ba " #INIT " add %o2, 4, %o2 .size "#NAME ", .-" #NAME); #endif