derek.holloway
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90 lines
1.9 KiB
ArmAsm
90 lines
1.9 KiB
ArmAsm
//===-- xray_trampoline_riscv32.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 riscv32-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 argument registers to stack
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addi sp, sp, -112
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CFI_DEF_CFA_OFFSET(112)
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sw ra, 108(sp)
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sw a7, 104(sp)
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sw a6, 100(sp)
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sw a5, 96(sp)
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sw a4, 92(sp)
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sw a3, 88(sp)
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sw a2, 84(sp)
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sw a1, 80(sp)
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sw a0, 76(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 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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lw a0, 76(sp)
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lw a1, 80(sp)
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lw a2, 84(sp)
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lw a3, 88(sp)
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lw a4, 92(sp)
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lw a5, 96(sp)
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lw a6, 100(sp)
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lw a7, 104(sp)
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lw ra, 108(sp)
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addi sp, sp, 112
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CFI_DEF_CFA_OFFSET(0)
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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, -32
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CFI_DEF_CFA_OFFSET(32)
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sw ra, 28(sp)
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sw a1, 24(sp)
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sw a0, 20(sp)
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fsd fa1, 8(sp)
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fsd fa0, 0(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, 0(sp)
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fld fa1, 8(sp)
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lw a0, 20(sp)
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lw a1, 24(sp)
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lw ra, 28(sp)
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addi sp, sp, 32
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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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lw \rd, \src
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.endm
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#include "xray_trampoline_riscv_common.S"
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