forked from OSchip/llvm-project
111 lines
2.6 KiB
ArmAsm
111 lines
2.6 KiB
ArmAsm
//===-- xray_trampoline_mips.s ----------------------------------*- ASM -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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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 MIPS-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_mips.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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.set noreorder
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.cpload $t9
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.set reorder
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// Save argument registers before doing any actual work
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.cfi_def_cfa_offset 36
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addiu $sp, $sp, -36
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sw $ra, 32($sp)
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.cfi_offset 31, -4
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sw $a3, 28($sp)
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sw $a2, 24($sp)
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sw $a1, 20($sp)
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sw $a0, 16($sp)
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sdc1 $f14, 8($sp)
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sdc1 $f12, 0($sp)
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la $t9, _ZN6__xray19XRayPatchedFunctionE
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lw $t9, 0($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 $f14, 8($sp)
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lw $a0, 16($sp)
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lw $a1, 20($sp)
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lw $a2, 24($sp)
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lw $a3, 28($sp)
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lw $ra, 32($sp)
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addiu $sp, $sp, 36
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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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.set noreorder
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.cpload $t9
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.set reorder
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// Save return registers before doing any actual work.
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.cfi_def_cfa_offset 36
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addiu $sp, $sp, -36
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sw $ra, 32($sp)
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.cfi_offset 31, -4
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sw $a1, 28($sp)
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sw $a0, 24($sp)
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sw $v1, 20($sp)
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sw $v0, 16($sp)
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sdc1 $f2, 8($sp)
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sdc1 $f0, 0($sp)
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la $t9, _ZN6__xray19XRayPatchedFunctionE
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lw $t9, 0($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 $f2, 8($sp)
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lw $v0, 16($sp)
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lw $v1, 20($sp)
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lw $a0, 24($sp)
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lw $a1, 28($sp)
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lw $ra, 32($sp)
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addiu $sp, $sp, 36
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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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