diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/sparc64/init-first.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/sparc64/init-first.h | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/sparc64/init-first.h b/sysdeps/unix/sysv/linux/sparc64/init-first.h new file mode 100644 index 0000000000..f7fad7f87f --- /dev/null +++ b/sysdeps/unix/sysv/linux/sparc64/init-first.h @@ -0,0 +1,92 @@ +/* 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 <sysdep.h> + +#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: rd %pc, %g1 + sethi %hi(_GLOBAL_OFFSET_TABLE_-(1b-.)), %l7 + 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), %g2 + or %g2, %lo(_dl_starting_up), %g2 + ld [%l7+%g2], %g2 + brz,pn %g2, 3f + sethi %hi(__libc_multiple_libcs), %g3 + ld [%g2], %g2 + subcc %g0, %g2, %g0 + subc %g0, -1, %g2 +3: or %g3, %lo(__libc_multiple_libcs), %g3 + ld [%l7+%g3], %g3 + st %g2, [%g3] + /* If so, argc et al are in %o0-%o2 already. Otherwise, load them. */ + brnz,pn %g2, " #INIT " + restore + ld [%sp+" __S(STACK_BIAS) "+22*8], %o0 + add %sp, " __S(STACK_BIAS) "+23*8, %o1 + sll %o0, 3, %o2 + add %o2, %o1, %o2 + add %o2, 8, %o2 + ba,a " #INIT " + .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 + brz,pt %g2, 3f + sethi %hi(__libc_multiple_libcs), %g3 + ld [%g4+%g2], %g2 + subcc %g0, %g2, %g0 + subc %g0, -1, %g2 +3: add %g3, %g4, %g3 + st %g2, [%g3+%lo(__libc_multiple_libcs)] + /* If so, argc et al are in %o0-%o2 already. Otherwise, load them. */ + brnz,pn %g2, " #INIT " + nop + ld [%sp+" __S(STACK_BIAS) "+22*8], %o0 + add %sp, " __S(STACK_BIAS) "+23*8, %o1 + sll %o0, 3, %o2 + add %o2, %o1, %o2 + add %o2, 8, %o2 + ba,a " #INIT " + .size "#NAME ", .-" #NAME); + +#endif |