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-rw-r--r--sysdeps/ia64/elf/start.S84
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+/* Copyright (C) 1999, 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Written by Jes Sorensen, <Jes.Sorensen@cern.ch>, April 1999.
+
+ 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. */
+
+#include <asm/unistd.h>
+#include <asm/fpu.h>
+
+/*
+ * Arguments for __libc_start_main:
+ * out0: main
+ * out1: argc
+ * out2: argv
+ * out3: init
+ * out4: fini
+ * out5: rtld_fini
+ * out6: stack_end
+ */
+
+ .psr abi64
+ .psr lsb
+ .lsb
+
+ .text
+
+ .global _start#
+ .proc _start#
+
+_start:
+ { .mlx
+ alloc r2 = ar.pfs,0,0,7,0
+ movl r3 = FPSR_DEFAULT
+ }
+ { .mlx
+ adds out2 = 16, sp /* get address of argc value */
+ movl gp = @gprel(0f)
+ ;;
+ }
+0: { .mii
+ ld8 out1 = [out2], 8 /* load argc and move out2 to become argv */
+ mov r9 = ip
+ ;;
+ sub gp = r9, gp /* back-compute gp value */
+ ;;
+ }
+ { .mfi
+ mov ar.fpsr = r3
+ addl out0 = @ltoff(@fptr(main#)), gp
+ }
+ { .mfi
+ addl out4 = @ltoff(@fptr(_fini#)), gp
+ addl out3 = @ltoff(@fptr(_init#)), gp
+ ;;
+ }
+ { .mmi
+ ld8 out0 = [out0] /* pointer to `main' function descriptor */
+ ld8 out3 = [out3] /* pointer to `init' function descriptor */
+ adds out6 = 16, sp /* highest non-environment stack address */
+ }
+ { .mib
+ ld8 out4 = [out4] /* pointer to `fini' function descriptor */
+ mov out5 = ret0 /* dynamic linker destructor */
+ br.call.sptk.few rp = __libc_start_main#
+ }
+ { .mib
+ mov rp = r0
+ br.ret.sptk.few rp /* break miserably if we ever return */
+ ;;
+ }
+ .endp _start#