1/* 2 * This file contains the code to perform calls to the 3 * iSeries LPAR hypervisor 4 * 5 * This program is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU General Public License 7 * as published by the Free Software Foundation; either version 8 * 2 of the License, or (at your option) any later version. 9 */ 10 11#include <asm/ppc_asm.h> 12#include <asm/processor.h> 13#include <asm/ptrace.h> 14 15 .text 16 17/* 18 * Hypervisor call 19 * 20 * Invoke the iSeries hypervisor via the System Call instruction 21 * Parameters are passed to this routine in registers r3 - r10 22 * 23 * r3 contains the HV function to be called 24 * r4-r10 contain the operands to the hypervisor function 25 * 26 */ 27 28_GLOBAL(HvCall) 29_GLOBAL(HvCall0) 30_GLOBAL(HvCall1) 31_GLOBAL(HvCall2) 32_GLOBAL(HvCall3) 33_GLOBAL(HvCall4) 34_GLOBAL(HvCall5) 35_GLOBAL(HvCall6) 36_GLOBAL(HvCall7) 37 38 39 mfcr r0 40 std r0,-8(r1) 41 stdu r1,-(STACK_FRAME_OVERHEAD+16)(r1) 42 43 /* r0 = 0xffffffffffffffff indicates a hypervisor call */ 44 45 li r0,-1 46 47 /* Invoke the hypervisor */ 48 49 sc 50 51 ld r1,0(r1) 52 ld r0,-8(r1) 53 mtcrf 0xff,r0 54 55 /* return to caller, return value in r3 */ 56 57 blr 58 59_GLOBAL(HvCall0Ret16) 60_GLOBAL(HvCall1Ret16) 61_GLOBAL(HvCall2Ret16) 62_GLOBAL(HvCall3Ret16) 63_GLOBAL(HvCall4Ret16) 64_GLOBAL(HvCall5Ret16) 65_GLOBAL(HvCall6Ret16) 66_GLOBAL(HvCall7Ret16) 67 68 mfcr r0 69 std r0,-8(r1) 70 std r31,-16(r1) 71 stdu r1,-(STACK_FRAME_OVERHEAD+32)(r1) 72 73 mr r31,r4 74 li r0,-1 75 mr r4,r5 76 mr r5,r6 77 mr r6,r7 78 mr r7,r8 79 mr r8,r9 80 mr r9,r10 81 82 sc 83 84 std r3,0(r31) 85 std r4,8(r31) 86 87 mr r3,r5 88 89 ld r1,0(r1) 90 ld r0,-8(r1) 91 mtcrf 0xff,r0 92 ld r31,-16(r1) 93 94 blr 95