From a9343c9364246d3288b4e7f20919ca1ad2e1fd3e Mon Sep 17 00:00:00 2001
From: FICTURE7 <FICTURE7@gmail.com>
Date: Tue, 14 Sep 2021 03:23:37 +0400
Subject: Refactor `PtcInfo` (#2625)
* Refactor `PtcInfo`
This change reduces the coupling of `PtcInfo` by moving relocation
tracking to the backend. `RelocEntry`s remains as `RelocEntry`s through
out the pipeline until it actually needs to be written to the PTC
streams. Keeping this representation makes inspecting and manipulating
relocations after compilations less painful. This is something I needed
to do to patch relocations to 0 to diff dumps.
Contributes to #1125.
* Turn `Symbol` & `RelocInfo` into readonly structs
* Add documentation to `CompiledFunction`
* Remove `Compiler.Compile<T>`
Remove `Compiler.Compile<T>` and replace it by `Map<T>` of the
`CompiledFunction` returned.
---
ARMeilleure/CodeGen/CompiledFunction.cs | 43 +++++++++++++++++++++++++++++++--
1 file changed, 41 insertions(+), 2 deletions(-)
(limited to 'ARMeilleure/CodeGen/CompiledFunction.cs')
diff --git a/ARMeilleure/CodeGen/CompiledFunction.cs b/ARMeilleure/CodeGen/CompiledFunction.cs
index 61e89c24..ab5e88eb 100644
--- a/ARMeilleure/CodeGen/CompiledFunction.cs
+++ b/ARMeilleure/CodeGen/CompiledFunction.cs
@@ -1,17 +1,56 @@
+using ARMeilleure.CodeGen.Linking;
using ARMeilleure.CodeGen.Unwinding;
+using ARMeilleure.Translation.Cache;
+using System;
+using System.Runtime.InteropServices;
namespace ARMeilleure.CodeGen
{
- struct CompiledFunction
+ /// <summary>
+ /// Represents a compiled function.
+ /// </summary>
+ readonly struct CompiledFunction
{
+ /// <summary>
+ /// Gets the machine code of the <see cref="CompiledFunction"/>.
+ /// </summary>
public byte[] Code { get; }
+ /// <summary>
+ /// Gets the <see cref="Unwinding.UnwindInfo"/> of the <see cref="CompiledFunction"/>.
+ /// </summary>
public UnwindInfo UnwindInfo { get; }
- public CompiledFunction(byte[] code, UnwindInfo unwindInfo)
+ /// <summary>
+ /// Gets the <see cref="Linking.RelocInfo"/> of the <see cref="CompiledFunction"/>.
+ /// </summary>
+ public RelocInfo RelocInfo { get; }
+
+ /// <summary>
+ /// Initializes a new instance of the <see cref="CompiledFunction"/> struct with the specified machine code,
+ /// unwind info and relocation info.
+ /// </summary>
+ /// <param name="code">Machine code</param>
+ /// <param name="unwindInfo">Unwind info</param>
+ /// <param name="relocInfo">Relocation info</param>
+ internal CompiledFunction(byte[] code, UnwindInfo unwindInfo, RelocInfo relocInfo)
{
Code = code;
UnwindInfo = unwindInfo;
+ RelocInfo = relocInfo;
+ }
+
+ /// <summary>
+ /// Maps the <see cref="CompiledFunction"/> onto the <see cref="JitCache"/> and returns a delegate of type
+ /// <typeparamref name="T"/> pointing to the mapped function.
+ /// </summary>
+ /// <typeparam name="T">Type of delegate</typeparam>
+ /// <returns>A delegate of type <typeparamref name="T"/> pointing to the mapped function</returns>
+ public T Map<T>()
+ {
+ IntPtr codePtr = JitCache.Map(this);
+
+ return Marshal.GetDelegateForFunctionPointer<T>(codePtr);
}
}
}
\ No newline at end of file
--
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