%# -*- C -*-
%# Copyright (c) 2017 Urabe, Shyouhei.  All rights reserved.
%#
%# This file is a part of  the programming language Ruby.  Permission is hereby
%# granted, to either  redistribute and/or modify this file,  provided that the
%# conditions mentioned  in the  file COPYING  are met.   Consult the  file for
%# details.
%
% zjit_insns, insns = RubyVM::Instructions.partition { |i| i.name.start_with?('zjit_') }
%
% next_offset = 0
% name_offset = proc do |i|
%   offset = sprintf("%4d", next_offset)
%   next_offset += i.name.length + 1 # insn.name + \0
%   offset
% end
%
CONSTFUNC(MAYBE_UNUSED(static const char *insn_name(VALUE insn)));

RUBY_SYMBOL_EXPORT_BEGIN /* for debuggers */
extern const int rb_vm_max_insn_name_size;
extern const char rb_vm_insn_name_base[];
extern const unsigned short rb_vm_insn_name_offset[VM_INSTRUCTION_SIZE];
RUBY_SYMBOL_EXPORT_END

#ifdef RUBY_VM_INSNS_INFO
%# "trace_" is longer than "zjit_", so USE_ZJIT doesn't impact the max name size.
const int rb_vm_max_insn_name_size = <%= RubyVM::Instructions.map { |i| i.name.size }.max %>;

const char rb_vm_insn_name_base[] =
% insns.each do |i|
    <%= cstr i.name %> "\0"
% end
#if USE_ZJIT
% zjit_insns.each do |i|
    <%= cstr i.name %> "\0"
% end
#endif
    ;

const unsigned short rb_vm_insn_name_offset[] = {
% insns.each_slice(12) do |row|
    <%= row.map(&name_offset).join(', ') %>,
% end
#if USE_ZJIT
% zjit_insns.each_slice(12) do |row|
    <%= row.map(&name_offset).join(', ') %>,
% end
#endif
};

ASSERT_VM_INSTRUCTION_SIZE(rb_vm_insn_name_offset);
#endif

const char *
insn_name(VALUE i)
{
    return &rb_vm_insn_name_base[rb_vm_insn_name_offset[i]];
}