/*
   *  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 
  ame
  
  ame:
  .endm
  
  .macro NO_SUPPORT name
  	GLOBAL 
  ame
  	b ps3_no_support
  .endm
  
  .macro HVCALL num
  	li r11, 
  um
  	.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