2 * Copyright (c) 2000-2001 Doug Rabson
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <machine/asm.h>
32 .global ia64_pal_entry
33 ia64_pal_entry: .quad 0
37 * struct ia64_pal_result ia64_call_pal_static(u_int64_t proc,
38 * u_int64_t arg1, u_int64_t arg2, u_int64_t arg3)
40 ENTRY(ia64_call_pal_static, 4)
48 alloc pfssave=ar.pfs,4,4,0,0
51 movl entry=@gprel(ia64_pal_entry)
53 1: mov palret=ip // for return address
56 add palret=2f-1b,palret // calculate return address
57 mov r28=in0 // procedure number
58 mov r29=in1 // copy arguments
62 ld8 entry=[entry] // read entry point
67 br.cond.sptk b6 // call into firmware
75 END(ia64_call_pal_static)
78 * struct ia64_pal_result ia64_call_pal_stacked(u_int64_t proc,
79 * u_int64_t arg1, u_int64_t arg2, u_int64_t arg3)
81 ENTRY(ia64_call_pal_stacked, 4)
89 alloc pfssave=ar.pfs,4,4,4,0
92 movl entry=@gprel(ia64_pal_entry)
96 mov r28=in0 // procedure number
99 ld8 entry=[entry] // read entry point
100 mov out1=in1 // copy arguments
106 rsm psr.i // disable interrupts
108 br.call.sptk.many rp=b6 // call into firmware
116 END(ia64_call_pal_stacked)