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@ -35,25 +35,26 @@ When no input file is specified, standard input is used. Similarly, the default
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output filename is `a.out`. After the compilation, the resulting file can be
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run on the target platform.
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gdb
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---
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You may have noticed the `gdb-experiment.go` file. It is a non-optimizing
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DWARF
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-----
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You may have noticed the 'dwarf' directory. `simple.go` is a non-optimizing
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version of the compiler targeting Linux only that adds DWARF debugging
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information mapping code locations onto lines in the `ir-dump.txt` byproduct
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output file. It's been rewritten in Go since managing all those binary buffers
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required to build the symbol table proved to be too painful in C.
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$ go run gdb-experiment.go [INPUT-FILE] [OUTPUT-FILE]
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$ go run dwarf/simple.go [INPUT-FILE] [OUTPUT-FILE]
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Use `break *0x4000b7` to get a breakpoint at the first Brainfuck instruction.
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Type `break *0x4000b7` into gdb to get a breakpoint at the first Brainfuck
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instruction.
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image::gdb-experiment.png[align="center"]
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There is also `gdb-object-file.go` that generates an object file that can be
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statically linked with `ld`, and `gdb-object-file-libc.go` generates an
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There is also `object-file.go` that generates an object file that can be
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statically linked with `ld`, and `object-file-libc.go` that generates an
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OS-independent binary that can be linked against the libc with the C compiler:
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$ go run gdb-object-file-libc.go program.bf program.o
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$ go run dwarf/object-file-libc.go program.bf program.o
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$ cc program.o -o program
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Contributing and Support
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