1/*- 2 * Copyright (C) 2010 Andreas Tobler 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 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. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 18 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 20 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 21 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 22 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 23 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 * 25 * $FreeBSD$ 26 */ 27#include <machine/asm.h> 28 29/* Hypervisor entry call. */ 30#define hc .long 0x44000022 31 32/* 33 * Simple HV calls take the same arguments, with the same ABI, as this 34 * C function 35 */ 36ASENTRY(phyp_hcall) 37 mflr %r0 38 std %r0,16(%r1) 39#if defined(_CALL_ELF) && _CALL_ELF == 2 40 ld %r11,96(%r1) /* Last couple args into volatile regs*/ 41 ld %r12,104(%r1) 42#else 43 ld %r11,112(%r1) /* Last couple args into volatile regs*/ 44 ld %r12,120(%r1) 45#endif 46 hc /* invoke the hypervisor */ 47 ld %r0,16(%r1) 48 mtlr %r0 49 blr /* return r3 = status */ 50ASEND(phyp_hcall) 51 52/* 53 * PFT HV calls take a special ABI (see PAPR 14.5.4.1) 54 * 55 * r3-r7 arguments passed unchanged, r8-r10 are addresses of return values 56 * HV takes the same r3-r7, but returns values in r3, r4-r6 57 */ 58ASENTRY(phyp_pft_hcall) 59 mflr %r0 60 std %r0,16(%r1) 61 stdu %r1,-80(%r1) 62 std %r8,48(%r1) /* save arguments */ 63 std %r9,56(%r1) 64 std %r10,64(%r1) 65 hc /* invoke the hypervisor */ 66 ld %r11,48(%r1) /* store results */ 67 std %r4,0(%r11) 68 ld %r11,56(%r1) 69 std %r5,0(%r11) 70 ld %r11,64(%r1) 71 std %r6,0(%r11) 72 ld %r1,0(%r1) /* exit */ 73 ld %r0,16(%r1) 74 mtlr %r0 75 blr /* return r3 = status */ 76ASEND(phyp_pft_hcall) 77