90 lines · plain
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-exception6//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_REGISTERS18 // Push argument registers to stack19 addi sp, sp, -11220 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.endm39 40.macro RESTORE_ARG_REGISTERS41 // Restore argument registers42 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, 11260 CFI_DEF_CFA_OFFSET(0)61.endm62 63.macro SAVE_RET_REGISTERS64 // Push return registers to stack65 addi sp, sp, -3266 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.endm73 74.macro RESTORE_RET_REGISTERS75 // Restore return registers76 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, 3282 CFI_DEF_CFA_OFFSET(0)83.endm84 85.macro LOAD_XLEN, rd, src86 lw \rd, \src87.endm88 89#include "xray_trampoline_riscv_common.S"90