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//===-- xray_trampoline_riscv32.s ----------------------------------*- ASM -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file is a part of XRay, a dynamic runtime instrumentation system.
//
// This implements the riscv32-specific assembler for the trampolines.
//
//===----------------------------------------------------------------------===//
#include "../sanitizer_common/sanitizer_asm.h"
.macro SAVE_ARG_REGISTERS
// Push argument registers to stack
addi sp, sp, -112
CFI_DEF_CFA_OFFSET(112)
sw ra, 108(sp)
sw a7, 104(sp)
sw a6, 100(sp)
sw a5, 96(sp)
sw a4, 92(sp)
sw a3, 88(sp)
sw a2, 84(sp)
sw a1, 80(sp)
sw a0, 76(sp)
fsd fa7, 64(sp)
fsd fa6, 56(sp)
fsd fa5, 48(sp)
fsd fa4, 40(sp)
fsd fa3, 32(sp)
fsd fa2, 24(sp)
fsd fa1, 16(sp)
fsd fa0, 8(sp)
.endm
.macro RESTORE_ARG_REGISTERS
// Restore argument registers
fld fa0, 8(sp)
fld fa1, 16(sp)
fld fa2, 24(sp)
fld fa3, 32(sp)
fld fa4, 40(sp)
fld fa5, 48(sp)
fld fa6, 56(sp)
fld fa7, 64(sp)
lw a0, 76(sp)
lw a1, 80(sp)
lw a2, 84(sp)
lw a3, 88(sp)
lw a4, 92(sp)
lw a5, 96(sp)
lw a6, 100(sp)
lw a7, 104(sp)
lw ra, 108(sp)
addi sp, sp, 112
CFI_DEF_CFA_OFFSET(0)
.endm
.macro SAVE_RET_REGISTERS
// Push return registers to stack
addi sp, sp, -32
CFI_DEF_CFA_OFFSET(32)
sw ra, 28(sp)
sw a1, 24(sp)
sw a0, 20(sp)
fsd fa1, 8(sp)
fsd fa0, 0(sp)
.endm
.macro RESTORE_RET_REGISTERS
// Restore return registers
fld fa0, 0(sp)
fld fa1, 8(sp)
lw a0, 20(sp)
lw a1, 24(sp)
lw ra, 28(sp)
addi sp, sp, 32
CFI_DEF_CFA_OFFSET(0)
.endm
.macro LOAD_XLEN, rd, src
lw \rd, \src
.endm
#include "xray_trampoline_riscv_common.S"
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