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Diffstat (limited to 'ports/sysdeps/m68k/start.S')
| -rw-r--r-- | ports/sysdeps/m68k/start.S | 120 |
1 files changed, 0 insertions, 120 deletions
diff --git a/ports/sysdeps/m68k/start.S b/ports/sysdeps/m68k/start.S deleted file mode 100644 index fd33ecdea8..0000000000 --- a/ports/sysdeps/m68k/start.S +++ /dev/null @@ -1,120 +0,0 @@ -/* Startup code compliant to the ELF m68k ABI. - Copyright (C) 1996-2014 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/>. */ - -/* This is the canonical entry point, usually the first thing in the text - segment. The SVR4/m68k ABI says that when the entry point runs, - most registers' values are unspecified, except for: - - %a1 Contains a function pointer to be registered with `atexit'. - This is how the dynamic linker arranges to have DT_FINI - functions called for shared libraries that have been loaded - before this code runs. - - %sp The stack contains the arguments and environment: - 0(%sp) argc - 4(%sp) argv[0] - ... - (4*argc)(%sp) NULL - (4*(argc+1))(%sp) envp[0] - ... - NULL -*/ - -#include <sysdep.h> - - .text - .globl _start - .type _start,@function -_start: - /* Clear the frame pointer. The ABI suggests this be done, to mark - the outermost frame obviously. */ - sub.l %fp, %fp - - /* Extract the arguments as encoded on the stack and set up the - arguments for `main': argc, argv. envp will be determined - later in __libc_start_main. */ - move.l (%sp)+, %d0 /* Pop the argument count. */ - move.l %sp, %a0 /* The argument vector starts just at the - current stack top. */ - - /* Provide the highest stack address to the user code (for stacks - which grow downward). */ - pea (%sp) - - pea (%a1) /* Push address of the shared library - termination function. */ - -#ifdef SHARED - /* Load PIC register. */ - LOAD_GOT (%a5) - - /* Push the address of our own entry points to `.fini' and - `.init'. */ - move.l __libc_csu_fini@GOT(%a5), -(%sp) - move.l __libc_csu_init@GOT(%a5), -(%sp) - - pea (%a0) /* Push second argument: argv. */ - move.l %d0, -(%sp) /* Push first argument: argc. */ - - move.l main@GOT(%a5), -(%sp) - - /* Call the user's main function, and exit with its value. But - let the libc call main. */ - jbsr __libc_start_main@PLTPC -#else - /* Push the address of our own entry points to `.fini' and - `.init'. */ - pea __libc_csu_fini - pea __libc_csu_init - - pea (%a0) /* Push second argument: argv. */ - move.l %d0, -(%sp) /* Push first argument: argc. */ - - pea main - - /* Call the user's main function, and exit with its value. But - let the libc call main. */ - jbsr __libc_start_main -#endif - - illegal /* Crash if somehow `exit' does return. */ - -/* 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 |