diff options
Diffstat (limited to 'sysdeps/unix/sysv/aix/start.s')
| -rw-r--r-- | sysdeps/unix/sysv/aix/start.s | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/aix/start.s b/sysdeps/unix/sysv/aix/start.s new file mode 100644 index 0000000000..bf17b8ce5c --- /dev/null +++ b/sysdeps/unix/sysv/aix/start.s @@ -0,0 +1,109 @@ +/* Copyright (C) 2001 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. + + 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + + .file "start.s" + .toc +T.lsd: .tc __libc_start_data[tc], __libc_start_data[rw] +T.main: .tc main[tc], main[rw] +T.init: .tc __libc_start_init[tc], __libc_start_init[rw] +T.fini: .tc __libc_start_fini[tc], __libc_start_init[rw] +T.rtld_fini : .tc __libc_start_rtld_fini[tc], __libc_start_rtld_fini[rw] + + .globl __start + .globl .__start + .globl __libc_start_data + + .extern .__libc_start_main + .extern .main + .extern main + .extern __libc_start_init + .extern __libc_start_fini + .extern __libc_start_rtld_fini + +/* Text */ + + .csect __start[ds] +__start: + .long .__start, TOC[tc0], 0 + + .csect .text[pr] +.__start: + +/* No prologue needed, __start does not have to follow the ABI. + + Input from kernel/loader + r1 : stack + r2 : TOC + r3 : argc + r4 : argv + r5 : envp + r28 : data origin + r29 : text origin + r30 : module count + r31 : default processing flag + + If r31 == r30, no special processing is needed, ie r28, r29 & r30 + are not used + + Save input in __libc_start_data */ + l 16, T.lsd(2) + st 1, 0(16) /* stack */ + st 2, 4(16) /* toc */ + st 3, 8(16) /* argc */ + st 4, 12(16) /* argv */ + st 5, 16(16) /* envp */ + st 28, 20(16) /* data origin */ + st 29, 24(16) /* text origin */ + st 30, 28(16) /* module count */ + st 31, 32(16) /* special */ + +/* Call __libc_start_main() */ + + bl .__libc_start_main + nop + +/* No epilog needed, __start does not have to follow the ABI */ + +/* Trace back */ +TB.__start: + .long 0x0 + .long 0xc2040 + .long 0x0 + .long TB.__start - .__start + .short 7 + .byte "__start" + .byte 0,0,0 + +/* Data + __libc_start_data + Space to keep libc initialization information */ + + .csect __libc_start_data[rw] +__libc_start_data: +/* For kernel/loader input args */ + .space 36 + +/* Externs */ + .long main +init: + .long __libc_start_init +fini: + .long __libc_start_fini +rtld_fini: + .long __libc_start_rtld_fini + .space 0x1000 + (4 + rtld_fini - __libc_start_data) |