3a067b288e
Use ppc64map (from x/arch) to generate ISA 3.1 support for the assembler. A new file asm9_gtables.go is added which contains generated code to encode ISA 3.1 instructions, a function to assist filling out the oprange structure, a lookup table for the fixed bits of each instructions, and a slice of string name. Generated functions are shared if their bitwise encoding match, and the translation from an obj.Prog structure matches. The generated file is entirely self-contained, and does not require regenerating any other files for changes within it. If opcodes in a.out.go are reordered or changed, anames.go must be updated in the same way as before. Future improvements could shrink the generated opcode table to 32 bit entries as there is much less variation of the encoding of the prefix word, but it is not always identical for instructions which share a similar encoding of arguments (e.g PLWA and PLWZ). Updates #44549 Change-Id: Ie83fa02497c9ad2280678d68391043d3aae63175 Reviewed-on: https://go-review.googlesource.com/c/go/+/419535 Run-TryBot: Paul Murphy <murp@ibm.com> TryBot-Result: Gopher Robot <gobot@golang.org> Run-TryBot: Jenny Rakoczy <jenny@golang.org> Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com> Reviewed-by: Jenny Rakoczy <jenny@golang.org> Reviewed-by: Michael Pratt <mpratt@google.com> Auto-Submit: Jenny Rakoczy <jenny@golang.org> |
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The Go Programming Language
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