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// Copyright 2019 The Marl Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#if defined(__powerpc64__)
#define MARL_BUILD_ASM 1
#include "osfiber_asm_ppc64.h"
// void marl_fiber_swap(marl_fiber_context* from, const marl_fiber_context* to)
// r3: from
// r4: to
.text
.global marl_fiber_swap
.align 4
.type marl_fiber_swap @function
marl_fiber_swap:
// Store non-volatile registers
std 1, MARL_REG_R1(3)
std 2, MARL_REG_R2(3)
std 13, MARL_REG_R13(3)
std 14, MARL_REG_R14(3)
std 15, MARL_REG_R15(3)
std 16, MARL_REG_R16(3)
std 17, MARL_REG_R17(3)
std 18, MARL_REG_R18(3)
std 19, MARL_REG_R19(3)
std 20, MARL_REG_R20(3)
std 21, MARL_REG_R21(3)
std 22, MARL_REG_R22(3)
std 23, MARL_REG_R23(3)
std 24, MARL_REG_R24(3)
std 25, MARL_REG_R25(3)
std 26, MARL_REG_R26(3)
std 27, MARL_REG_R27(3)
std 28, MARL_REG_R28(3)
std 29, MARL_REG_R29(3)
std 30, MARL_REG_R30(3)
std 31, MARL_REG_R31(3)
// Store special registers
mflr 5
std 5, MARL_REG_LR(3)
mfcr 5
std 5, MARL_REG_CCR(3)
// Store non-volatile floating point registers
stfd 14, MARL_REG_FPR14(3)
stfd 15, MARL_REG_FPR15(3)
stfd 16, MARL_REG_FPR16(3)
stfd 17, MARL_REG_FPR17(3)
stfd 18, MARL_REG_FPR18(3)
stfd 19, MARL_REG_FPR19(3)
stfd 20, MARL_REG_FPR20(3)
stfd 21, MARL_REG_FPR21(3)
stfd 22, MARL_REG_FPR22(3)
stfd 23, MARL_REG_FPR23(3)
stfd 24, MARL_REG_FPR24(3)
stfd 25, MARL_REG_FPR25(3)
stfd 26, MARL_REG_FPR26(3)
stfd 27, MARL_REG_FPR27(3)
stfd 28, MARL_REG_FPR28(3)
stfd 29, MARL_REG_FPR29(3)
stfd 30, MARL_REG_FPR30(3)
stfd 31, MARL_REG_FPR31(3)
// Store non-volatile altivec registers
#ifdef __ALTIVEC__
li 5, MARL_REG_VMX
stvxl 20, 3, 5
addi 5, 5, 16
stvxl 21, 3, 5
addi 5, 5, 16
stvxl 22, 3, 5
addi 5, 5, 16
stvxl 23, 3, 5
addi 5, 5, 16
stvxl 24, 3, 5
addi 5, 5, 16
stvxl 25, 3, 5
addi 5, 5, 16
stvxl 26, 3, 5
addi 5, 5, 16
stvxl 27, 3, 5
addi 5, 5, 16
stvxl 28, 3, 5
addi 5, 5, 16
stvxl 29, 3, 5
addi 5, 5, 16
stvxl 30, 3, 5
addi 5, 5, 16
stvxl 31, 3, 5
mfvrsave 5
stw 5, MARL_REG_VRSAVE(3)
#endif // __ALTIVEC__
// Load non-volatile registers
ld 1, MARL_REG_R1(4)
ld 2, MARL_REG_R2(4)
ld 13, MARL_REG_R13(4)
ld 14, MARL_REG_R14(4)
ld 15, MARL_REG_R15(4)
ld 16, MARL_REG_R16(4)
ld 17, MARL_REG_R17(4)
ld 18, MARL_REG_R18(4)
ld 19, MARL_REG_R19(4)
ld 20, MARL_REG_R20(4)
ld 21, MARL_REG_R21(4)
ld 22, MARL_REG_R22(4)
ld 23, MARL_REG_R23(4)
ld 24, MARL_REG_R24(4)
ld 25, MARL_REG_R25(4)
ld 26, MARL_REG_R26(4)
ld 27, MARL_REG_R27(4)
ld 28, MARL_REG_R28(4)
ld 29, MARL_REG_R29(4)
ld 30, MARL_REG_R30(4)
ld 31, MARL_REG_R31(4)
// Load non-volatile floating point registers
lfd 14, MARL_REG_FPR14(4)
lfd 15, MARL_REG_FPR15(4)
lfd 16, MARL_REG_FPR16(4)
lfd 17, MARL_REG_FPR17(4)
lfd 18, MARL_REG_FPR18(4)
lfd 19, MARL_REG_FPR19(4)
lfd 20, MARL_REG_FPR20(4)
lfd 21, MARL_REG_FPR21(4)
lfd 22, MARL_REG_FPR22(4)
lfd 23, MARL_REG_FPR23(4)
lfd 24, MARL_REG_FPR24(4)
lfd 25, MARL_REG_FPR25(4)
lfd 26, MARL_REG_FPR26(4)
lfd 27, MARL_REG_FPR27(4)
lfd 28, MARL_REG_FPR28(4)
lfd 29, MARL_REG_FPR29(4)
lfd 30, MARL_REG_FPR30(4)
lfd 31, MARL_REG_FPR31(4)
// Load non-volatile altivec registers
#ifdef __ALTIVEC__
li 5, MARL_REG_VMX
lvxl 20, 4, 5
addi 5, 5, 16
lvxl 21, 4, 5
addi 5, 5, 16
lvxl 22, 4, 5
addi 5, 5, 16
lvxl 23, 4, 5
addi 5, 5, 16
lvxl 24, 4, 5
addi 5, 5, 16
lvxl 25, 4, 5
addi 5, 5, 16
lvxl 26, 4, 5
addi 5, 5, 16
lvxl 27, 4, 5
addi 5, 5, 16
lvxl 28, 4, 5
addi 5, 5, 16
lvxl 29, 4, 5
addi 5, 5, 16
lvxl 30, 4, 5
addi 5, 5, 16
lvxl 31, 4, 5
lwz 5, MARL_REG_VRSAVE(4)
mtvrsave 5
#endif // __ALTIVEC__
// Load parameters and entrypoint
ld 12, MARL_REG_LR(4)
ld 3, MARL_REG_R3(4)
ld 4, MARL_REG_R4(4)
mtlr 12
// Branch to entrypoint
blr
#endif // defined(__powerpc64__)