| //===-- 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" |
