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- /* Startup code for elf32-sparc
- Copyright (C) 1997, 1998 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Richard Henderson <[email protected]>, 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.
- 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. */
- .section ".text"
- .align 4
- .global _dynamic_start
- .type _dynamic_start,#function
- _dynamic_start:
- /* TODO: need to set __dl_fini here */
- b _start
- .align 4
- .global _start
- .type _start,#function
- _start:
- /* Terminate the stack frame, and reserve space for functions to
- drop their arguments. */
- mov %g0, %fp
- sub %sp, 6*4, %sp
- .ifdef PIC
- /* Set %l7 to _GLOBAL_OFFSET_TABLE value */
- sethi %hi(_GLOBAL_OFFSET_TABLE_-8),%l7
- or %l7,%lo(_GLOBAL_OFFSET_TABLE_-4),%l7
- call FPC_GETGOT
- nop
- .endif
- /* Extract the arguments and environment as encoded on the stack. The
- argument info starts after one register window (16 words) past the SP. */
- ld [%sp+22*4], %o2
- sethi %hi(operatingsystem_parameter_argc),%o1
- or %o1,%lo(operatingsystem_parameter_argc),%o1
- .ifdef PIC
- ld [%o1+%l7],%o1
- .endif
- st %o2, [%o1]
- add %sp, 23*4, %o0
- sethi %hi(operatingsystem_parameter_argv),%o1
- or %o1,%lo(operatingsystem_parameter_argv),%o1
- .ifdef PIC
- ld [%o1+%l7],%o1
- .endif
- st %o0, [%o1]
- /* envp=(argc+1)*4+argv */
- inc %o2
- sll %o2, 2, %o2
- add %o2, %o0, %o2
- sethi %hi(operatingsystem_parameter_envp),%o1
- or %o1,%lo(operatingsystem_parameter_envp),%o1
- .ifdef PIC
- ld [%o1+%l7],%o1
- .endif
- st %o2, [%o1]
- /* Save initial stackpointer */
- sethi %hi(__stkptr),%o1
- or %o1,%lo(__stkptr),%o1
- .ifdef PIC
- ld [%o1+%l7],%o1
- .endif
- st %sp, [%o1]
- /* Call the user program entry point. */
- call PASCALMAIN
- nop
- /* Die very horribly if main returns. */
- unimp
- .globl _haltproc
- .type _haltproc,@function
- _haltproc:
- /* TODO: need to check whether __dl_fini is non-zero and call the function pointer in case */
- mov 188, %g1 /* "exit_group" system call */
- ta 0x10 /* dot the system call */
- nop /* delay slot */
- /* Die very horribly if exit returns. */
- unimp
- .size _start, .-_start
- .comm __stkptr,4
- .comm __dl_fini,4
- .comm operatingsystem_parameter_envp,4
- .comm operatingsystem_parameter_argc,4
- .comm operatingsystem_parameter_argv,4
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