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#!/usr/bin/env ruby
require 'yaml'
require 'erb'
# load template data
DATA = YAML.load_file(File.join(__dir__, 'ops.yaml'))
switches = Hash.new { |h, k| h[k] = [] }
op_meta = []
DATA['ops'].each do |set_id, ops|
op_meta += ops.map { |op|
'{ "%s", %d }, /* 0x%02x + 0x%s */' % [
op['id'],
op['len'] || 0,
(set_id == 'main') ? 0 : 255,
op['hex'].to_s(16).upcase.rjust(2, '0'),
]
}
switches[set_id] = ops.select { |op|
op['op'] != 'PREFIX'
}.map { |op|
# op hex string
hex = op['hex'].to_s(16).upcase.rjust(2, '0')
case op['op']
when 'XX'
[
"case 0x%s: /* op: %s, cat: %s */",
" cpu_set_state(ctx, old_pc, GB_CPU_STATE_INVALID);",
" break;",
].join("\n") % [
hex,
op['id'],
op['cat'],
]
else
# pc_expr
pc_expr = if op['pc']
'cpu_ww(ctx, RW_PC, old_pc + %d);' % [op['len']]
else
''
end
# time expr
time_expr = case op['time']
when Numeric
'clock = %d;' % [op['time']]
when Hash
'clock = %d; // t: %d, f: %d' % %w{f t f}.map { |k|
op['time'][k]
}
else
raise "unknown op time: #{hex}: #{op['time']}"
end
[
"case 0x%s: /* op: \"%s\", cat: \"%s\" */",
" %s", # time_expr
" %s", # action_expr
" %s", # pc_expr
" break;"
].join("\n") % [
hex,
op['id'],
op['cat'],
time_expr,
op['code'] || 'cpu_set_state(ctx, old_pc, GB_CPU_STATE_NOT_IMPLEMENTED);',
pc_expr,
]
end
}.join("\n")
end
# build complete ops list
ops = op_meta.join("\n")
t = ERB.new(DATA['templates']['main'])
puts t.run(binding)
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