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ea76b2d8d8
Add RISC-V support for XRay. The RV64 implementation has been tested in both QEMU and in our hardware environment. Currently this requires D and C extensions, but since both RV64GC and RVA22/RVA23 are becoming mainstream, I don't think this requirement will be a big problem. Based on the previous work by @a-poduval : https://reviews.llvm.org/D117929 --------- Co-authored-by: Ashwin Poduval <ashwin.poduval@gmail.com>
90 lines
2.1 KiB
ArmAsm
90 lines
2.1 KiB
ArmAsm
//===-- xray_trampoline_riscv64.s ----------------------------------*- ASM -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file is a part of XRay, a dynamic runtime instrumentation system.
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//
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// This implements the riscv64-specific assembler for the trampolines.
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//
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//===----------------------------------------------------------------------===//
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#include "../sanitizer_common/sanitizer_asm.h"
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.macro SAVE_ARG_REGISTERS
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// Push return registers to stack
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addi sp, sp, -144
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CFI_DEF_CFA_OFFSET(144)
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sd ra, 136(sp)
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sd a7, 128(sp)
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sd a6, 120(sp)
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sd a5, 112(sp)
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sd a4, 104(sp)
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sd a3, 96(sp)
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sd a2, 88(sp)
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sd a1, 80(sp)
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sd a0, 72(sp)
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fsd fa7, 64(sp)
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fsd fa6, 56(sp)
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fsd fa5, 48(sp)
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fsd fa4, 40(sp)
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fsd fa3, 32(sp)
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fsd fa2, 24(sp)
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fsd fa1, 16(sp)
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fsd fa0, 8(sp)
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.endm
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.macro SAVE_RET_REGISTERS
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// Push return registers to stack
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addi sp, sp, -48
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CFI_DEF_CFA_OFFSET(48)
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sd ra, 40(sp)
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sd a1, 32(sp)
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sd a0, 24(sp)
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fsd fa1, 16(sp)
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fsd fa0, 8(sp)
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.endm
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.macro RESTORE_RET_REGISTERS
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// Restore return registers
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fld fa0, 8(sp)
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fld fa1, 16(sp)
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ld a0, 24(sp)
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ld a1, 32(sp)
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ld ra, 40(sp)
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addi sp, sp, 48
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CFI_DEF_CFA_OFFSET(0)
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.endm
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.macro RESTORE_ARG_REGISTERS
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// Restore argument registers
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fld fa0, 8(sp)
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fld fa1, 16(sp)
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fld fa2, 24(sp)
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fld fa3, 32(sp)
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fld fa4, 40(sp)
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fld fa5, 48(sp)
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fld fa6, 56(sp)
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fld fa7, 64(sp)
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ld a0, 72(sp)
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ld a1, 80(sp)
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ld a2, 88(sp)
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ld a3, 96(sp)
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ld a4, 104(sp)
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ld a5, 112(sp)
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ld a6, 120(sp)
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ld a7, 128(sp)
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ld ra, 136(sp)
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addi sp, sp, 144
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CFI_DEF_CFA_OFFSET(0)
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.endm
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.macro LOAD_XLEN, rd, src
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ld \rd, \src
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.endm
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#include "xray_trampoline_riscv_common.S"
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