3d5fa0356e
calls. This eliminates TEXTREL from libc, making its text segment relocatable. PR: i386/85242 Approved by: kan (mentor) MFC after: 1 month
52 lines
1.9 KiB
ArmAsm
52 lines
1.9 KiB
ArmAsm
/*
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* Copyright (c) 2001 Daniel Eischen <deischen@freebsd.org>
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* All rights reserved.
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*
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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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* 1. 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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* 2. Neither the name of the author nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* 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 AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <machine/asm.h>
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__FBSDID("$FreeBSD$");
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/*
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* _ctx_start((void *func)(int arg1, ..., argn),
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* int arg1, ..., argn, ucontext_t *ucp)
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*
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* 0(%esp) - func
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* 4(%esp) - arg1
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* 8(%esp) - arg2
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* ...
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* (4*n)(%esp) - argn
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* (4*(n + 1))(%esp) - ucp, %ebp setup to point here (base of stack)
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*/
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ENTRY(_ctx_start)
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popl %eax /* get start function */
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call *%eax /* call start function */
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PIC_PROLOGUE
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movl %esi, %esp /*
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* setup stack for completion routine;
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* ucp is now at top of stack
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*/
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call PIC_PLT(_ctx_done) /* should never return */
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call PIC_PLT(abort) /* fubar */
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ret
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