| /* Startup code for Alpha/ELF. |
| Copyright (C) 1993-2016 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Richard Henderson <rth@tamu.edu> |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| In addition to the permissions in the GNU Lesser General Public |
| License, the Free Software Foundation gives you unlimited |
| permission to link the compiled version of this file with other |
| programs, and to distribute those programs without any restriction |
| coming from the use of this file. (The GNU Lesser General Public |
| License restrictions do apply in other respects; for example, they |
| cover modification of the file, and distribution when not linked |
| into another program.) |
| |
| Note that people who make modified versions of this file are not |
| obligated to grant this special exception for their modified |
| versions; it is their choice whether to do so. The GNU Lesser |
| General Public License gives permission to release a modified |
| version without this exception; this exception also makes it |
| possible to release a modified version which carries forward this |
| exception. |
| |
| 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 |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library. If not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <sysdep.h> |
| |
| .text |
| .align 3 |
| .globl _start |
| .ent _start, 0 |
| .type _start,@function |
| _start: |
| .frame $15, 0, $15 |
| br gp, 1f |
| 1: ldgp gp, 0(gp) |
| subq sp, 16, sp |
| mov 0, $15 |
| .prologue 0 |
| |
| /* Load address of the user's main function. */ |
| lda a0, main |
| |
| ldl a1, 16(sp) /* get argc */ |
| lda a2, 24(sp) /* get argv */ |
| |
| /* Load address of our own entry points to .fini and .init. */ |
| lda a3, __libc_csu_init |
| lda a4, __libc_csu_fini |
| |
| /* Store address of the shared library termination function. */ |
| mov v0, a5 |
| |
| /* Provide the highest stack address to the user code. */ |
| stq sp, 0(sp) |
| |
| /* Call the user's main function, and exit with its value. |
| But let the libc call main. */ |
| jsr ra, __libc_start_main |
| |
| /* Die very horribly if exit returns. Call_pal hlt is callable from |
| kernel mode only; this will result in an illegal instruction trap. */ |
| call_pal 0 |
| .end _start |
| |
| /* For ECOFF backwards compatibility. */ |
| weak_alias (_start, __start) |
| |
| /* Define a symbol for the first piece of initialized data. */ |
| .data |
| .globl __data_start |
| __data_start: |
| .weak data_start |
| data_start = __data_start |