1//===-- xray_trampoline_riscv32.s ----------------------------------*- ASM -*-===// 2// 3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4// See https://llvm.org/LICENSE.txt for license information. 5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6// 7//===----------------------------------------------------------------------===// 8// 9// This file is a part of XRay, a dynamic runtime instrumentation system. 10// 11// This implements the riscv32-specific assembler for the trampolines. 12// 13//===----------------------------------------------------------------------===// 14 15#include "../sanitizer_common/sanitizer_asm.h" 16 17.macro SAVE_ARG_REGISTERS 18 // Push argument registers to stack 19 addi sp, sp, -112 20 CFI_DEF_CFA_OFFSET(112) 21 sw ra, 108(sp) 22 sw a7, 104(sp) 23 sw a6, 100(sp) 24 sw a5, 96(sp) 25 sw a4, 92(sp) 26 sw a3, 88(sp) 27 sw a2, 84(sp) 28 sw a1, 80(sp) 29 sw a0, 76(sp) 30 fsd fa7, 64(sp) 31 fsd fa6, 56(sp) 32 fsd fa5, 48(sp) 33 fsd fa4, 40(sp) 34 fsd fa3, 32(sp) 35 fsd fa2, 24(sp) 36 fsd fa1, 16(sp) 37 fsd fa0, 8(sp) 38.endm 39 40.macro RESTORE_ARG_REGISTERS 41 // Restore argument registers 42 fld fa0, 8(sp) 43 fld fa1, 16(sp) 44 fld fa2, 24(sp) 45 fld fa3, 32(sp) 46 fld fa4, 40(sp) 47 fld fa5, 48(sp) 48 fld fa6, 56(sp) 49 fld fa7, 64(sp) 50 lw a0, 76(sp) 51 lw a1, 80(sp) 52 lw a2, 84(sp) 53 lw a3, 88(sp) 54 lw a4, 92(sp) 55 lw a5, 96(sp) 56 lw a6, 100(sp) 57 lw a7, 104(sp) 58 lw ra, 108(sp) 59 addi sp, sp, 112 60 CFI_DEF_CFA_OFFSET(0) 61.endm 62 63.macro SAVE_RET_REGISTERS 64 // Push return registers to stack 65 addi sp, sp, -32 66 CFI_DEF_CFA_OFFSET(32) 67 sw ra, 28(sp) 68 sw a1, 24(sp) 69 sw a0, 20(sp) 70 fsd fa1, 8(sp) 71 fsd fa0, 0(sp) 72.endm 73 74.macro RESTORE_RET_REGISTERS 75 // Restore return registers 76 fld fa0, 0(sp) 77 fld fa1, 8(sp) 78 lw a0, 20(sp) 79 lw a1, 24(sp) 80 lw ra, 28(sp) 81 addi sp, sp, 32 82 CFI_DEF_CFA_OFFSET(0) 83.endm 84 85.macro LOAD_XLEN, rd, src 86 lw \rd, \src 87.endm 88 89#include "xray_trampoline_riscv_common.S" 90