2fe8fb192f
There is important information about booting non-ack images in docs/UPDATING. ack/aout-format images can't be built any more, and booting clang/ELF-format ones is a little different. Updating to the new boot monitor is recommended. Changes in this commit: . drop boot monitor -> allowing dropping ack support . facility to copy ELF boot files to /boot so that old boot monitor can still boot fairly easily, see UPDATING . no more ack-format libraries -> single-case libraries . some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases . drop several ack toolchain commands, but not all support commands (e.g. aal is gone but acksize is not yet). . a few libc files moved to netbsd libc dir . new /bin/date as minix date used code in libc/ . test compile fix . harmonize includes . /usr/lib is no longer special: without ack, /usr/lib plays no kind of special bootstrapping role any more and bootstrapping is done exclusively through packages, so releases depend even less on the state of the machine making them now. . rename nbsd_lib* to lib* . reduce mtree
122 lines
3.7 KiB
ArmAsm
122 lines
3.7 KiB
ArmAsm
/*
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* Copyright (c) 1980, 1993
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* The Regents of the University of California. 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. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University 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 REGENTS 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 REGENTS 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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#if defined(LIBC_SCCS) && !defined(lint)
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/* .asciz "@(#)_setjmp.s 8.1 (Berkeley) 6/4/93" */
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.asciz "$NetBSD: _setjmp.S,v 1.9 2003/08/07 16:42:31 agc Exp $"
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#endif /* LIBC_SCCS and not lint */
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/*
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* C library -- _setjmp, _longjmp
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*
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* _longjmp(a,v)
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* will generate a "return(v)" from
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* the last call to
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* _setjmp(a)
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* by restoring registers from the stack,
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* The previous signal state is NOT restored.
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*
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* Even though we don't use sigreturn14, we still store things in a sigcontext
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* in order to be consistent.
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*/
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#include "DEFS.h"
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ENTRY(_setjmp, R6)
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movl 4(%ap),%r0
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movl 12(%fp),12(%r0) # save frame pointer of caller
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movl 16(%fp),20(%r0) # save pc of caller
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#ifdef __ELF__
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movl 8(%fp),16(%r0) # save ap of caller
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clrl %r1 # clear arg count
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bbc $13,6(%fp),1f # was this a callg?
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addl3 $1,(%ap),%r1 # get real arg count+1 for calls
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1: moval 24(%fp)[%r1],8(%r0) # save sp of caller
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movpsl 24(%r0) # save current psl
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movw 4(%fp),24(%r0) # save psw of caller
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movq %r6,44(%r0) # save r6/r7
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movq %r8,52(%r0) # save r8/r9
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movq %r10,60(%r0) # save r10/r11
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#endif
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clrl %r0
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ret
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ENTRY(_longjmp, 0)
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movl 8(%ap),%r0 # return(v)
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movl 4(%ap),%r1 # fetch buffer
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tstl 12(%r1) # is fp null
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beql botch
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#ifdef __ELF__
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movq 44(%r1),%r6 # restore r6/r7
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movq 52(%r1),%r8 # restore r8/r9
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movq 60(%r1),%r10 # restore r10/r11
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movl 16(%r1),%ap # restore ap
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movl 8(%r1),%sp # restore sp
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movl 12(%r1),%fp # restore fp
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movq 20(%r1),-(%sp) # save pc/psl to new stack
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rei # and go back to saved pc/psl
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#else
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loop:
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bitw $1,6(%fp) # %r0 saved?
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beql 1f
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movl %r0,20(%fp)
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bitw $2,6(%fp) # was %r1 saved?
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beql 2f
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movl %r1,24(%fp)
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brb 2f
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1:
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bitw $2,6(%fp) # was %r1 saved?
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beql 2f
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movl %r1,20(%fp)
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2:
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cmpl 12(%r1),12(%fp)
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beql done
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blssu botch
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movab loop,16(%fp)
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ret # pop another frame
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done:
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cmpb *16(%fp),$2 # returning to an "rei"?
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bneq 1f
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movab 3f,16(%fp) # do return w/ psl-pc pop
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brw 2f
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1:
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movab 4f,16(%fp) # do standard return
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2:
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ret # unwind stack before signals enabled
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3:
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addl2 $8,%sp # compensate for PSL-PC push
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4:
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jmp *20(%r1) # done, return....
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#endif /* !__ELF__ */
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botch:
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calls $0,_C_LABEL(longjmperror)
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halt
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