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136 lines
3.5 KiB
136 lines
3.5 KiB
//===-- xray_trampoline_mips64.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 MIPS64-specific assembler for the trampolines.
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//
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//===----------------------------------------------------------------------===//
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.text
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.file "xray_trampoline_mips64.S"
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.globl __xray_FunctionEntry
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.p2align 2
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.type __xray_FunctionEntry,@function
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__xray_FunctionEntry:
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.cfi_startproc
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// Save argument registers before doing any actual work.
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.cfi_def_cfa_offset 144
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daddiu $sp, $sp, -144
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sd $ra, 136($sp)
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.cfi_offset 31, -8
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sd $gp, 128($sp)
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sd $a7, 120($sp)
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sd $a6, 112($sp)
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sd $a5, 104($sp)
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sd $a4, 96($sp)
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sd $a3, 88($sp)
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sd $a2, 80($sp)
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sd $a1, 72($sp)
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sd $a0, 64($sp)
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sdc1 $f19, 56($sp)
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sdc1 $f18, 48($sp)
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sdc1 $f17, 40($sp)
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sdc1 $f16, 32($sp)
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sdc1 $f15, 24($sp)
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sdc1 $f14, 16($sp)
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sdc1 $f13, 8($sp)
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sdc1 $f12, 0($sp)
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lui $gp, %hi(%neg(%gp_rel(__xray_FunctionEntry)))
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daddu $gp, $gp, $t9
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daddiu $gp ,$gp, %lo(%neg(%gp_rel(__xray_FunctionEntry)))
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dla $t9, _ZN6__xray19XRayPatchedFunctionE
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ld $t9, 0($t9)
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beqz $t9, FunctionEntry_restore
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// a1=0 means that we are tracing an entry event
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move $a1, $zero
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// Function ID is in t0 (the first parameter).
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move $a0, $t0
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jalr $t9
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FunctionEntry_restore:
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// Restore argument registers
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ldc1 $f12, 0($sp)
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ldc1 $f13, 8($sp)
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ldc1 $f14, 16($sp)
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ldc1 $f15, 24($sp)
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ldc1 $f16, 32($sp)
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ldc1 $f17, 40($sp)
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ldc1 $f18, 48($sp)
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ldc1 $f19, 56($sp)
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ld $a0, 64($sp)
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ld $a1, 72($sp)
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ld $a2, 80($sp)
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ld $a3, 88($sp)
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ld $a4, 96($sp)
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ld $a5, 104($sp)
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ld $a6, 112($sp)
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ld $a7, 120($sp)
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ld $gp, 128($sp)
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ld $ra, 136($sp)
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daddiu $sp, $sp, 144
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jr $ra
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FunctionEntry_end:
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.size __xray_FunctionEntry, FunctionEntry_end-__xray_FunctionEntry
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.cfi_endproc
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.text
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.globl __xray_FunctionExit
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.p2align 2
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.type __xray_FunctionExit,@function
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__xray_FunctionExit:
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.cfi_startproc
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// Save return registers before doing any actual work.
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.cfi_def_cfa_offset 64
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daddiu $sp, $sp, -64
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sd $ra, 56($sp)
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.cfi_offset 31, -8
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sd $gp, 48($sp)
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sd $a0, 40($sp)
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sd $v1, 32($sp)
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sd $v0, 24($sp)
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sdc1 $f2, 16($sp)
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sdc1 $f1, 8($sp)
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sdc1 $f0, 0($sp)
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lui $gp, %hi(%neg(%gp_rel(__xray_FunctionExit)))
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daddu $gp, $gp, $t9
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daddiu $gp ,$gp, %lo(%neg(%gp_rel(__xray_FunctionExit)))
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dla $t9, _ZN6__xray19XRayPatchedFunctionE
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ld $t9, 0($t9)
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beqz $t9, FunctionExit_restore
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// a1=1 means that we are tracing an exit event
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li $a1, 1
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// Function ID is in t0 (the first parameter).
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move $a0, $t0
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jalr $t9
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FunctionExit_restore:
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// Restore return registers
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ldc1 $f0, 0($sp)
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ldc1 $f1, 8($sp)
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ldc1 $f2, 16($sp)
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ld $v0, 24($sp)
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ld $v1, 32($sp)
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ld $a0, 40($sp)
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ld $gp, 48($sp)
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ld $ra, 56($sp)
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daddiu $sp, $sp, 64
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jr $ra
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FunctionExit_end:
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.size __xray_FunctionExit, FunctionExit_end-__xray_FunctionExit
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.cfi_endproc
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