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https://gitlab.com/freepascal.org/fpc/source.git
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94 lines
2.7 KiB
ActionScript
94 lines
2.7 KiB
ActionScript
#
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# This file is part of the Free Pascal run time library.
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# Copyright (c) 1999-2000 by Michael Van Canneyt and Peter Vreman
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# members of the Free Pascal development team.
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#
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# See the file COPYING.FPC, included in this distribution,
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# for details about the copyright.
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#
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# This program 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.
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#
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#**********************************************************************}
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#
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# Linux ELF startup code for Free Pascal
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#
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#
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# Stack layout at program start:
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#
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# nil
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# envn
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# ....
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# .... ENVIRONMENT VARIABLES
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# env1
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# env0
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# nil
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# argn
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# ....
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# .... COMMAND LINE OPTIONS
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# arg1
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# arg0
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# argc <--- esp
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#
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.file "cprt0.as"
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.text
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.globl _start
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.type _start,@function
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_start:
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/* First locate the start of the environment variables */
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popl %ecx /* Get argc in ecx */
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movl %esp,%ebx /* Esp now points to the arguments */
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leal 4(%esp,%ecx,4),%eax /* The start of the environment is: esp+4*eax+8 */
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andl $0xfffffff8,%esp /* Align stack */
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movl %eax,operatingsystem_parameter_envp /* Move the environment pointer */
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movl %ecx,operatingsystem_parameter_argc /* Move the argument counter */
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movl %ebx,operatingsystem_parameter_argv /* Move the argument pointer */
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movl %eax,__environ /* libc environ */
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pushl %eax
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pushl %ebx
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pushl %ecx
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call __libc_init /* init libc */
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movzwl __fpu_control,%eax
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pushl %eax
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call __setfpucw
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popl %eax
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pushl $_fini
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call atexit
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popl %eax
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call _init
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popl %eax
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popl %eax
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xorl %ebp,%ebp
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call PASCALMAIN /* start the program */
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.globl _haltproc
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.type _haltproc,@function
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_haltproc:
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_haltproc2: # GAS <= 2.15 bug: generates larger jump if a label is exported
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movzwl operatingsystem_result,%ebx
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pushl %ebx
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call exit
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xorl %eax,%eax
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incl %eax /* eax=1, exit call */
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popl %ebx
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int $0x80
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jmp _haltproc2
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.data
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.bss
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.type ___fpc_brk_addr,@object
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.comm ___fpc_brk_addr,4 /* heap management */
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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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