ps3-hvcall.S
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/*
* PS3 bootwrapper hvcalls.
*
* Copyright (C) 2007 Sony Computer Entertainment Inc.
* Copyright 2007 Sony Corp.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "ppc_asm.h"
.machine "ppc64"
/*
* The PS3 hypervisor uses a 64 bit "C" language calling convention.
* The routines here marshal arguments between the 32 bit wrapper
* program and the 64 bit hvcalls.
*
* wrapper lv1
* 32-bit (h,l) 64-bit
*
* 1: r3,r4 <-> r3
* 2: r5,r6 <-> r4
* 3: r7,r8 <-> r5
* 4: r9,r10 <-> r6
* 5: 8(r1),12(r1) <-> r7
* 6: 16(r1),20(r1) <-> r8
* 7: 24(r1),28(r1) <-> r9
* 8: 32(r1),36(r1) <-> r10
*
*/
.macro GLOBAL name
.section ".text"
.balign 4
.globl \name
\name:
.endm
.macro NO_SUPPORT name
GLOBAL \name
b ps3_no_support
.endm
.macro HVCALL num
li r11, \num
.long 0x44000022
extsw r3, r3
.endm
.macro SAVE_LR offset=4
mflr r0
stw r0, \offset(r1)
.endm
.macro LOAD_LR offset=4
lwz r0, \offset(r1)
mtlr r0
.endm
.macro LOAD_64_REG target,high,low
sldi r11, \high, 32
or \target, r11, \low
.endm
.macro LOAD_64_STACK target,offset
ld \target, \offset(r1)
.endm
.macro LOAD_R3
LOAD_64_REG r3,r3,r4
.endm
.macro LOAD_R4
LOAD_64_REG r4,r5,r6
.endm
.macro LOAD_R5
LOAD_64_REG r5,r7,r8
.endm
.macro LOAD_R6
LOAD_64_REG r6,r9,r10
.endm
.macro LOAD_R7
LOAD_64_STACK r7,8
.endm
.macro LOAD_R8
LOAD_64_STACK r8,16
.endm
.macro LOAD_R9
LOAD_64_STACK r9,24
.endm
.macro LOAD_R10
LOAD_64_STACK r10,32
.endm
.macro LOAD_REGS_0
stwu 1,-16(1)
stw 3, 8(1)
.endm
.macro LOAD_REGS_5
LOAD_R3
LOAD_R4
LOAD_R5
LOAD_R6
LOAD_R7
.endm
.macro LOAD_REGS_6
LOAD_REGS_5
LOAD_R8
.endm
.macro LOAD_REGS_8
LOAD_REGS_6
LOAD_R9
LOAD_R10
.endm
.macro STORE_REGS_0_1
lwz r11, 8(r1)
std r4, 0(r11)
mr r4, r3
li r3, 0
addi r1,r1,16
.endm
.macro STORE_REGS_5_2
lwz r11, 16(r1)
std r4, 0(r11)
lwz r11, 20(r1)
std r5, 0(r11)
.endm
.macro STORE_REGS_6_1
lwz r11, 24(r1)
std r4, 0(r11)
.endm
GLOBAL lv1_get_logical_ppe_id
SAVE_LR
LOAD_REGS_0
HVCALL 69
STORE_REGS_0_1
LOAD_LR
blr
GLOBAL lv1_get_logical_partition_id
SAVE_LR
LOAD_REGS_0
HVCALL 74
STORE_REGS_0_1
LOAD_LR
blr
GLOBAL lv1_get_repository_node_value
SAVE_LR
LOAD_REGS_5
HVCALL 91
STORE_REGS_5_2
LOAD_LR
blr
GLOBAL lv1_panic
SAVE_LR
LOAD_REGS_8
HVCALL 255
LOAD_LR
blr