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Diffstat (limited to 'doc/jit-debug-sample')
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diff --git a/doc/jit-debug-sample b/doc/jit-debug-sample deleted file mode 100644 index a0c5d2d8b48..00000000000 --- a/doc/jit-debug-sample +++ /dev/null @@ -1,86 +0,0 @@ -* A debugging session using a dynamically generated symbol file. - - Let's assume we have the following C# application which we want to debug: - - <pre> - using System; - - public class Foo - { - public struct MyStruct { - int a; - long b; - double c; - } - - public static void Main () - { - Int32 value = 5; - long test = 512; - - MyStruct my_struct; - my_struct.a = 5; - my_struct.b = test; - my_struct.c = 23323.5235; - } - } - </pre> - - First of all, we need to compile it and create the .il files: - - <pre> - $ mcs ./Foo.cs - $ monodis /home/export/martin/MONO-LINUX/lib/corlib.dll > corlib.il - $ monodis Foo.exe > Foo.il - </pre> - - Now we can start the JIT in the debugger: - - <pre> - $ gdb ~/monocvs/mono/mono/jit/mono - (gdb) r --dwarf --debug Foo:Main ./Foo.exe - Starting program: /home/martin/monocvs/mono/mono/jit/mono --dwarf --debug Foo:Main ./Foo.exe - 0x081e8911 in ?? () - (gdb) call mono_debug_make_symbols () - (gdb) add-symbol-file /tmp/Foo.o - Reading symbols from /tmp/Foo.o...done. - Current language: auto; currently c++ - (gdb) frame - #0 Foo.Main () at Foo.il:26 - 26 // method line 2 - (gdb) n - Foo.Main () at Foo.il:38 - 38 IL_0000: ldc.i4.5 - (gdb) list - 33 .maxstack 2 - 34 .locals ( - 35 int32 V_0, - 36 int64 V_1, - 37 valuetype MyStruct V_2) - 38 IL_0000: ldc.i4.5 - 39 IL_0001: stloc.0 - 40 IL_0002: ldc.i4 512 - 41 IL_0007: conv.i8 - 42 IL_0008: stloc.1 - 43 IL_0009: ldloca.s 2 - 44 IL_000b: ldc.i4.5 - 45 IL_000c: stfld int32 .MyStruct::a - 46 IL_0011: ldloca.s 2 - 47 IL_0013: ldloc.1 - 48 IL_0014: stfld int64 .MyStruct::b - 49 IL_0019: ldloca.s 2 - 50 IL_001b: ldc.r8 23323.5 - 51 IL_0024: stfld float64 .MyStruct::c - 52 IL_0029: ret - (gdb) until 52 - Foo.Main () at Foo.il:53 - 53 } - (gdb) info locals - V_0 = 5 - V_1 = 512 - V_2 = {a = 5, b = 512, c = 23323.523499999999} - </pre> - - As you see in this example, you need to know IL code to use this debugging method - but - it may be the only way to debug a library. - |