| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 1 | /* Copyright (C) 1995-2015 Free Software Foundation, Inc. |
| 2 | |
| 3 | This file is part of the GNU C Library. |
| 4 | |
| 5 | The GNU C Library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 of the License, or (at your option) any later version. |
| 9 | |
| 10 | In addition to the permissions in the GNU Lesser General Public |
| 11 | License, the Free Software Foundation gives you unlimited |
| 12 | permission to link the compiled version of this file with other |
| 13 | programs, and to distribute those programs without any restriction |
| 14 | coming from the use of this file. (The GNU Lesser General Public |
| 15 | License restrictions do apply in other respects; for example, they |
| 16 | cover modification of the file, and distribution when not linked |
| 17 | into another program.) |
| 18 | |
| 19 | Note that people who make modified versions of this file are not |
| 20 | obligated to grant this special exception for their modified |
| 21 | versions; it is their choice whether to do so. The GNU Lesser |
| 22 | General Public License gives permission to release a modified |
| 23 | version without this exception; this exception also makes it |
| 24 | possible to release a modified version which carries forward this |
| 25 | exception. |
| 26 | |
| 27 | The GNU C Library is distributed in the hope that it will be useful, |
| 28 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 29 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 30 | Lesser General Public License for more details. |
| 31 | |
| 32 | You should have received a copy of the GNU Lesser General Public |
| 33 | License along with the GNU C Library. If not, see |
| 34 | <http://www.gnu.org/licenses/>. */ |
| 35 | |
| 36 | .text |
| 37 | .globl _start |
| 38 | .type _start,@function |
| 39 | _start: |
| 40 | /* On entry the stack contains the following args: |
| 41 | r1+0 - argc |
| 42 | r1+4 - argv[0] |
| 43 | ... |
| 44 | r1+4*(argc-1) - argv[argc-1] |
| 45 | r1+4*argc - NULL |
| 46 | r1+4*argc + 4 - envp[0] |
| 47 | ... |
| 48 | NULL |
| 49 | */ |
| 50 | addk r3,r0,r0 |
| 51 | addk r5,r1,r0 |
| 52 | 1: |
| 53 | addik r5,r5,4 |
| 54 | lw r4,r5,r0 |
| 55 | bneid r4,1b |
| 56 | addik r3,r3,1 |
| 57 | addik r6,r3,-1 |
| 58 | sw r6,r1,r0 |
| 59 | addik r7,r1,4 |
| 60 | addik r1,r1,-24 |
| 61 | #ifdef SHARED |
| 62 | /* Setup PIC. */ |
| 63 | mfs r20,rpc |
| 64 | addik r20,r20,_GLOBAL_OFFSET_TABLE_+8 |
| 65 | lwi r5,r20,main@GOT |
| 66 | lwi r8,r20,__libc_csu_init@GOT |
| 67 | lwi r9,r20,__libc_csu_fini@GOT |
| 68 | brid __libc_start_main@PLT |
| 69 | addk r10,r0,r0 |
| 70 | #else |
| 71 | addik r5,r0,main |
| 72 | addik r8,r0,__libc_csu_init |
| 73 | addik r9,r0,__libc_csu_fini |
| 74 | brid __libc_start_main |
| 75 | addk r10,r0,r0 |
| 76 | #endif |
| 77 | |
| 78 | /* Define a symbol for the first piece of initialized data. */ |
| 79 | .data |
| 80 | .globl __data_start |
| 81 | __data_start: |
| 82 | .long 0 |
| 83 | .weak data_start |
| 84 | data_start = __data_start |