diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/alpha/start.S')
-rw-r--r-- | sysdeps/unix/sysv/linux/alpha/start.S | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/alpha/start.S b/sysdeps/unix/sysv/linux/alpha/start.S new file mode 100644 index 0000000..d1966a8 --- /dev/null +++ b/sysdeps/unix/sysv/linux/alpha/start.S @@ -0,0 +1,93 @@ +/* Copyright (C) 1993, 1995, 1996 Free Software Foundation, Inc. + Contributed by Brendan Kehoe (brendan@zen.org). + +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., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include <sysdep.h> + +.comm errno, 4 + + .text +ENTRY(__start) + lda sp, -16(sp) + stq zero, 8(sp) /* terminate frame chain */ + + br t0, 1f +1: ldgp gp, 0(t0) + + mov zero, a0 /* establish __fpu_control w/kernel */ + jsr ra, __setfpucw + ldgp gp, 0(ra) + + /* clear out errno. */ + lda t0, errno + stl zero, 0(t0) + + ldl a0, 16(sp) /* get argc */ + lda a1, 24(sp) /* get argv */ + + /* initialize environ: */ + lda t0, environ + s8addq a0, a1, a2 + addq a2, 0x8, a2 + stq a2, 0(t0) + +#ifndef HAVE_INITFINI + mov a0, s0 + mov a1, s1 + mov a2, s2 + + jsr ra, __libc_init + ldgp gp, 0(ra) + + mov s0, a0 + mov s1, a1 + mov s2, a2 + + /* initialize constructors: */ + jsr ra, __main + ldgp gp, 0(ra) + + mov s0, a0 + mov s1, a1 + mov s2, a2 +#endif + + jsr ra, main + ldgp gp, 0(ra) + + mov v0, a0 + + lda pv, exit + jsr ra, (pv), 1 + ldgp gp, 0(ra) + + /* in case exit returns: */ + +1: ldi v0, __NR_exit + call_pal PAL_callsys + br 1b + + .end __start + + +/* Define a symbol for the first piece of initialized data. */ + .data + .globl __data_start +__data_start: + .long 0 + +weak_alias(__data_start, data_start) |