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/*
* Copyright (c) 2003 Marcel Moolenaar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
.ident "$FreeBSD$"
.text
/*
* void _start(char **ap, struct ps_strings *, void (*cleanup)(void));
*/
#define AP in0
#define CLEANUP in2
#define GP loc0
#define ARGC loc1
#define ARGV loc2
#define ENVP loc3
.global _start
.type _start, @function
.proc _start
_start:
.prologue
.save rp, r0
.body
{ .mlx
alloc r14=ar.pfs,3,4,3,0
movl r15=@gprel(1f)
}
1:
{ .mmi
ld4 ARGC=[AP]
adds ARGV=8,AP
mov r16=ip
;;
}
{ .mmi
sub gp=r16,r15
sub GP=r16,r15
shladd r14=ARGC,3,AP
;;
}
{ .mii
addl r15=@ltoff(environ),gp
cmp4.ge p6,p7=0,ARGC
adds ENVP=16,r14
;;
}
{ .mmi
ld8 r14=[r15]
(p7) ld8 r15=[ARGV]
addl r16=@gprel(__progname),gp
;;
}
{ .mib
st8 [r14]=ENVP
(p7) cmp.eq p6,p0=0,r15
(p6) br.dpnt .L1
;;
}
/* Normalize __progname. */
{ .mmi
st8 [r16]=r15
ld1 r14=[r15],1
nop 0
;;
}
.L0:
{ .mib
cmp4.eq p7,p0=0,r14
cmp4.eq p6,p0=0x2f,r14
(p7) br.dptk .L1
;;
}
{ .mmb
(p6) st8 [r16]=r15
ld1 r14=[r15],1
br.dptk.many .L0
}
.L1:
{ .mib
cmp.ne p7,p0=0,CLEANUP
mov out0=CLEANUP
(p7) br.call.sptk b0=atexit
;;
}
{ .mfb
mov gp=GP
nop 0
br.call.sptk b0=_init_tls
}
#ifdef GCRT
{ .mmi
mov gp=GP
;;
addl r14=@ltoff(@fptr(_mcleanup)),gp
nop 0
;;
}
{ .mfb
ld8 out0=[r14]
nop 0
br.call.sptk b0=atexit
;;
}
#endif
{ .mmi
mov gp=GP
;;
addl r14=@ltoff(@fptr(_fini)),gp
nop 0
;;
}
{ .mfb
ld8 out0=[r14]
nop 0
br.call.sptk b0=atexit
;;
}
#ifdef GCRT
{ .mmi
mov gp=GP
;;
addl r14=@ltoff(eprol),gp
addl r15=@ltoff(etext),gp
;;
}
{ .mmb
ld8 out0=[r14]
ld8 out1=[r15]
br.call.sptk b0=monstartup
;;
}
#endif
{ .mfb
mov gp=GP
nop 0
br.call.sptk b0=_init
;;
}
{ .mmi
mov gp=GP
mov out0=ARGC
mov out1=ARGV
}
{ .mfb
mov out2=ENVP
nop 0
br.call.sptk b0=main
;;
}
{ .mib
mov gp=GP
mov out0=r8
br.call.sptk b0=exit
;;
}
.endp _start
#ifdef GCRT
eprol:
#endif
.rodata
.empty: stringz ""
.sdata
.global __progname
.size __progname,8
.type __progname,@object
__progname: data8 .empty
.common environ,8,8
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