| /* ELF startup code for HPPA. |
| Copyright (C) 2002-2014 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 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/>. */ |
| |
| .import main, code |
| .import $global$, data |
| .import __libc_start_main, code |
| .import __libc_csu_fini, code |
| .import __libc_csu_init, code |
| |
| /* Have the linker create plabel words so we get PLABEL32 |
| relocs and not 21/14. The use of 21/14 relocs is only |
| supported in the latest dynamic linker. */ |
| .section .rodata |
| .align 4 |
| .Lpmain: |
| .word P%main |
| .Lp__libc_start_main: |
| .word P%__libc_start_main |
| .Lp__libc_csu_fini: |
| .word P%__libc_csu_fini |
| .Lp__libc_csu_init: |
| .word P%__libc_csu_init |
| |
| .text |
| .align 4 |
| .globl _start |
| .export _start, ENTRY |
| .type _start,@function |
| _start: |
| /* At entry to the function we have: |
| |
| r26 - Unused |
| r25 - argc |
| r24 - argv |
| r23 - False _dl_fini plabel address |
| |
| This function is called from the lower half of RTLD_START. |
| |
| The call to __libc_start_main expects: |
| |
| 1. r26 - Application main |
| 2. r25 - argc |
| 3. r24 - argv |
| 4. r23 - __libc_csu_init |
| 5. sp-52 - __libc_csu_fini |
| 6. sp-56 - rtld_fini |
| 7. sp-60 - stackend */ |
| |
| .proc |
| .callinfo |
| /* Clear previous-sp. */ |
| stw %r0, -4(%sp) |
| /* Setup the stack and frame. */ |
| stw %rp, -20(%sp) |
| ldo 64(%sp), %sp |
| stw %sp, -4(%sp) |
| stw %r19, -32(%sp) |
| |
| /* argc and argv should be in 25 and 24 (2nd and 3rd argument) */ |
| /* void (*rtld_fini) (void) (6th argument) */ |
| stw %r23, -56(%sp) |
| /* Need to setup 1, 4, 5, and 7th arguments */ |
| |
| #if SHARED |
| /* load main (1st argument) */ |
| addil LT'.Lpmain, %r19 |
| ldw RT'.Lpmain(%r1), %r26 |
| ldw 0(%r26),%r26 |
| /* void (*init) (void) (4th argument) */ |
| addil LT'.Lp__libc_csu_init, %r19 |
| ldw RT'.Lp__libc_csu_init(%r1), %r23 |
| ldw 0(%r23), %r23 |
| /* void (*fini) (void) (5th argument) */ |
| addil LT'.Lp__libc_csu_fini, %r19 |
| ldw RT'.Lp__libc_csu_fini(%r1), %r22 |
| ldw 0(%r22), %r22 |
| #else |
| /* load main (1st argument) */ |
| ldil LR'.Lpmain, %r26 |
| ldw RR'.Lpmain(%r26), %r26 |
| /* void (*init) (void) (4th argument) */ |
| ldil LR'.Lp__libc_csu_init, %r23 |
| ldw RR'.Lp__libc_csu_init(%r23), %r23 |
| /* void (*fini) (void) (5th argument) */ |
| ldil LR'.Lp__libc_csu_fini, %r22 |
| ldw RR'.Lp__libc_csu_fini(%r22), %r22 |
| #endif |
| /* Store 5th argument */ |
| stw %r22, -52(%sp) |
| /* void *stack_end (7th argument) */ |
| stw %sp, -60(%sp) |
| |
| /* load global */ |
| ldil L%$global$, %dp |
| ldo R%$global$(%dp), %dp |
| |
| bl __libc_start_main,%r2 |
| nop |
| /* die horribly if it returned (it shouldn't) */ |
| iitlbp %r0,(%sr0,%r0) |
| nop |
| |
| .procend |
| |
| /* Define a symbol for the first piece of initialized data. */ |
| .data |
| .globl __data_start |
| __data_start: |
| .long 0 |
| .weak data_start |
| data_start = __data_start |
