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b2bc0096dc
git-svn-id: file:///Users/olsen/Code/migration-svn-zu-git/logical-line-staging/clib2/trunk@15079 87f5fb63-7c3d-0410-a384-fd976d0f7a62
184 lines
3.9 KiB
ArmAsm
184 lines
3.9 KiB
ArmAsm
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| $Id: nrcrt0.S,v 1.5 2006-01-08 12:04:24 obarthel Exp $
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| :ts=4
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| Portable ISO 'C' (1994) runtime library for the Amiga computer
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| Copyright (c) 2002-2006 by Olaf Barthel <olsen (at) sourcery.han.de>
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| All rights reserved.
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| Redistribution and use in source and binary forms, with or without
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| modification, are permitted provided that the following conditions
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| are met:
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| - Redistributions of source code must retain the above copyright
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| notice, this list of conditions and the following disclaimer.
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| - Neither the name of Olaf Barthel nor the names of contributors
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| may be used to endorse or promote products derived from this
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| software without specific prior written permission.
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| THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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| AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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| LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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| CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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| SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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| INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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| CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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| ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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| POSSIBILITY OF SUCH DAMAGE.
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|-----------------------------------------------------------------------------
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LVOAllocMem = -0xc6
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LVOFreeMem = -0xd2
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LVOFindTask = -0x126
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LVOCopyMem = -0x270
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|-----------------------------------------------------------------------------
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pr_Result2 = 148
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pr_CLI = 172
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|-----------------------------------------------------------------------------
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RETURN_FAIL = 20
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ERROR_NO_FREE_STORE = 103
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|-----------------------------------------------------------------------------
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MEMF_CLEAR = 65536
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|-----------------------------------------------------------------------------
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.text
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.globl _main | This enforces linkage against the main() function
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.globl __main
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.globl ___is_resident
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|-----------------------------------------------------------------------------
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movel 4:W,a6
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subal a1,a1
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jsr a6@(LVOFindTask:W)
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movel d0,a2
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tstl a2@(pr_CLI:W)
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bnes from_shell
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|-----------------------------------------------------------------------------
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lea ___a4_init,a4
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movel #___bss_size,d1
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beqs no_bss
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#if defined(SMALL_DATA)
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lea a4@(__edata:W),a1
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#endif /* SMALL_DATA */
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#if defined(SMALL_DATA32)
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lea a4@(__edata:L),a1
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#endif /* SMALL_DATA32 */
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clear_bss:
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clrl a1@+
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subql #4,d1
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bnes clear_bss
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no_bss:
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jmp __main
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|-----------------------------------------------------------------------------
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from_shell:
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movel #___data_size,d5
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movel #___bss_size,d0
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addl d5,d0
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movel #MEMF_CLEAR,d1
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jsr a6@(LVOAllocMem:W)
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tstl d0
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beqs fail
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movel d0,a4
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lea ___a4_init-0x7ffe,a5
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movel d5,d0
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movel a5,a0
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movel a4,a1
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jsr a6@(LVOCopyMem:W)
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lea ___datadata_relocs,a0
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movel a0@+,d0
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beqs no_reloc
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movel a5,d1
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subl a4,d1
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do_reloc:
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movel a0@+,a1
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subl d1,a4@(a1:l)
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subql #1,d0
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bnes do_reloc
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no_reloc:
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lea a4@(0x7ffe:W),a4
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#if defined(SMALL_DATA)
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lea a4@(___is_resident:W),a2
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#endif /* SMALL_DATA */
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#if defined(SMALL_DATA32)
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lea a4@(___is_resident:L),a2
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#endif /* SMALL_DATA32 */
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movew #1,a2@
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jbsr __main
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movel d0,d2
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movel 4:W,a6
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movel #___data_size,d0
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addl #___bss_size,d0
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lea a4@(-0x7ffe:W),a1
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jsr a6@(LVOFreeMem:W)
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movel d2,d0
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rts
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fail:
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movel #ERROR_NO_FREE_STORE,a2@(pr_Result2:W)
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moveql #RETURN_FAIL,d0
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rts
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|-----------------------------------------------------------------------------
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.globl ___get_a4
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___get_a4:
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movel a4,d0
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rts
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|-----------------------------------------------------------------------------
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.globl ___set_a4
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___set_a4:
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movel sp@(4),a4
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rts
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