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- /* Startup code for elf64-sparc
- Copyright (C) 1997-2017 Free Software Foundation, Inc.
- Contributed by Richard Henderson <richard@gnu.ai.mit.edu>, 1997.
- 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 <features.h>
- #include <sysdep.h>
- .text
- .align 4
- .global _start
- .type _start,%function
- #if defined(__UCLIBC_CTOR_DTOR__)
- .type _init,%function
- .type _fini,%function
- #else
- .weak _init
- .weak _fini
- #endif
- .type __uClibc_main,%function
- /* Stick in a dummy reference to main(), so that if an application
- * is linking when the main() function is in a static library (.a)
- * we can be sure that main() actually gets linked in */
- .global main
- .type main,%function
- #ifdef __PIC__
- .LLGETPC0:
- retl
- add %o7, %l7, %l7
- #endif
- _start:
- #ifdef __PIC__
- sethi %hi(_GLOBAL_OFFSET_TABLE_-4), %l7
- call .LLGETPC0
- add %l7, %lo(_GLOBAL_OFFSET_TABLE_+4), %l7
- #endif
- /* Terminate the stack frame, and reserve space for functions to
- * drop their arguments. */
- mov %g0, %fp
- sub %sp, 6*8, %sp
- /* Extract the arguments and environment as encoded on the stack. The
- argument info starts after one register window (16 words) past the SP,
- plus the bias we added, plus the magic v9 STACK_BIAS. */
- ldx [%sp+STACK_BIAS+22*8], %o1 /* %o1 = argc */
- add %sp, STACK_BIAS+23*8, %o2 /* %o2 = argv */
- /* Load the addresses of the user entry points. */
- sethi %hi(main), %o0
- sethi %hi(_init), %o3
- sethi %hi(_fini), %o4
- or %o0, %lo(main), %o0
- or %o3, %lo(_init), %o3
- or %o4, %lo(_fini), %o4
- #ifdef __PIC__
- /* Need a little more magic when building PIC to get addr of main */
- LD [%l7 + %o0], %o0
- LD [%l7 + %o3], %o3
- LD [%l7 + %o4], %o4
- #endif
- /* When starting a binary via the dynamic linker, %g1 contains the
- * address of the shared library termination function, which will be
- * registered with atexit(). If we are statically linked, this will
- * be NULL. */
- mov %g1, %o5
- /* Let libc do the rest of the initialization, and call main. */
- call __uClibc_main
- nop
- /* Die very horribly if exit returns. */
- unimp
- .size _start,.-_start
- /* Define a symbol for the first piece of initialized data. */
- .data
- .global __data_start
- __data_start:
- .long 0
- .weak data_start
- data_start = __data_start
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