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27960785a6
------------------------------------------------------------------------ r45836 | pierre | 2020-07-23 20:59:03 +0000 (Thu, 23 Jul 2020) | 1 line Fix error in assembly startup code for sparc linux ------------------------------------------------------------------------ --- Merging r45836 into '.': U rtl/linux/sparc/prt0.as --- Recording mergeinfo for merge of r45836 into '.': U . git-svn-id: branches/fixes_3_2@45851 -
143 lines
3.9 KiB
ActionScript
143 lines
3.9 KiB
ActionScript
/* Startup code for elf32-sparc
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Copyright (C) 1997, 1998 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Richard Henderson <richard@gnu.ai.mit.edu>, 1997.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02111-1301, USA. */
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.section ".text"
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.align 4
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.global _dynamic_start
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.type _dynamic_start,#function
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_dynamic_start:
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.ifdef PIC
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call 1f
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sethi %hi(_GLOBAL_OFFSET_TABLE_+4),%o0
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1: or %o0,%lo(_GLOBAL_OFFSET_TABLE_+8),%o0
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add %o0,%o7,%o0
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sethi %hi(__dl_fini),%o1
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or %o1,%lo(__dl_fini),%o1
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ld [%o0+%o1],%o0
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b _start
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st %g1,[%o0]
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.else
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sethi %hi(__dl_fini),%o0
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b _start
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st %g1,[%o0+%lo(__dl_fini)]
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.endif
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.align 4
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.global _start
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.type _start,#function
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_start:
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/* Terminate the stack frame, and reserve space for functions to
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drop their arguments. */
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mov %g0, %fp
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sub %sp, 6*4, %sp
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.ifdef PIC
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/* Set %l7 to _GLOBAL_OFFSET_TABLE value */
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sethi %hi(_GLOBAL_OFFSET_TABLE_-8),%l7
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or %l7,%lo(_GLOBAL_OFFSET_TABLE_-4),%l7
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call FPC_GETGOT
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nop
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.endif
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/* Extract the arguments and environment as encoded on the stack. The
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argument info starts after one register window (16 words) past the SP. */
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ld [%sp+22*4], %o2
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sethi %hi(operatingsystem_parameter_argc),%o1
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or %o1,%lo(operatingsystem_parameter_argc),%o1
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.ifdef PIC
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ld [%o1+%l7],%o1
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.endif
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st %o2, [%o1]
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add %sp, 23*4, %o0
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sethi %hi(operatingsystem_parameter_argv),%o1
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or %o1,%lo(operatingsystem_parameter_argv),%o1
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.ifdef PIC
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ld [%o1+%l7],%o1
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.endif
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st %o0, [%o1]
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/* envp=(argc+1)*4+argv */
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inc %o2
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sll %o2, 2, %o2
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add %o2, %o0, %o2
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sethi %hi(operatingsystem_parameter_envp),%o1
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or %o1,%lo(operatingsystem_parameter_envp),%o1
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.ifdef PIC
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ld [%o1+%l7],%o1
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.endif
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st %o2, [%o1]
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/* Save initial stackpointer */
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sethi %hi(__stkptr),%o1
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or %o1,%lo(__stkptr),%o1
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.ifdef PIC
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ld [%o1+%l7],%o1
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.endif
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st %sp, [%o1]
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/* Call the user program entry point. */
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call PASCALMAIN
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nop
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/* Die very horribly if main returns. */
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unimp
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.size _start, .-_start
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.globl _haltproc
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.type _haltproc,@function
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_haltproc:
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save %o6,-96,%o6
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.ifdef PIC
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call 1f
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sethi %hi(_GLOBAL_OFFSET_TABLE_+4),%l7
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1: or %l7,%lo(_GLOBAL_OFFSET_TABLE_+8),%l7
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add %l7,%o7,%l7
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.endif
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mov %i0,%l0
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sethi %hi(__dl_fini),%o0
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or %o0,%lo(__dl_fini),%o0
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.ifdef PIC
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ld [%o0+%l7],%o0
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.endif
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ld [%o0],%o0
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subcc %o0,%g0,%g0
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beq 2f
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nop
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call %o0
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nop
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2:
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mov %i0,%o0 /* i0 contains the exitcode */
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mov 188, %g1 /* "exit_group" system call */
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ta 0x10 /* do the system call */
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unimp /* Die very horribly if exit returns. */
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.size _haltproc,.-_haltproc
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.comm __stkptr,4
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.comm __dl_fini,4
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.comm operatingsystem_parameter_envp,4
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.comm operatingsystem_parameter_argc,4
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.comm operatingsystem_parameter_argv,4
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.section .note.GNU-stack,"",@progbits
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