mirror of
https://github.com/vsariola/sointu.git
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240 lines
7.1 KiB
Plaintext
240 lines
7.1 KiB
Plaintext
{{- if .HasOp "pop"}}
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;;-------------------------------------------------------------------------------
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;; POP opcode: remove (discard) the topmost signal from the stack
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;;-------------------------------------------------------------------------------
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{{- if .Mono "pop" -}}
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;; Mono: a -> (empty)
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{{- end}}
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{{- if .Stereo "pop" -}}
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;; Stereo: a b -> (empty)
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{{- end}}
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;;-------------------------------------------------------------------------------
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(func $su_op_pop (param $stereo i32)
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{{- if .Stereo "pop"}}
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(if (local.get $stereo) (then
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(drop (call $pop))
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))
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{{- end}}
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(drop (call $pop))
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)
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{{end}}
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{{- if .HasOp "add"}}
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;;-------------------------------------------------------------------------------
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;; ADD opcode: add the two top most signals on the stack
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;;-------------------------------------------------------------------------------
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{{- if .Mono "add"}}
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;; Mono: a b -> a+b b
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{{- end}}
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{{- if .Stereo "add" -}}
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;; Stereo: a b c d -> a+c b+d c d
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{{- end}}
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;;-------------------------------------------------------------------------------
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(func $su_op_add (param $stereo i32)
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{{- if .StereoAndMono "add"}}
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(if (local.get $stereo) (then
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{{- end}}
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{{- if .Stereo "add"}}
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call $pop ;; F: b c d P: a
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call $pop ;; F: c d P: b a
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call $peek2;; F: c d P: d b a
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f32.add ;; F: c d P: b+d a
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call $push ;; F: b+d c d P: a
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call $peek2;; F: b+d c d P: c a
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f32.add ;; F: b+d c d P: a+c
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call $push ;; F: a+c b+d c d P:
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{{- end}}
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{{- if .StereoAndMono "add"}}
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)(else
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{{- end}}
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{{- if .Mono "add"}}
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(call $push (f32.add (call $pop) (call $peek)))
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{{- end}}
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{{- if .StereoAndMono "add"}}
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))
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{{- end}}
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)
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{{end}}
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{{- if .HasOp "addp"}}
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;;-------------------------------------------------------------------------------
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;; ADDP opcode: add the two top most signals on the stack and pop
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;;-------------------------------------------------------------------------------
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;; Mono: a b -> a+b
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;; Stereo: a b c d -> a+c b+d
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;;-------------------------------------------------------------------------------
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(func $su_op_addp (param $stereo i32)
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{{- if .StereoAndMono "addp"}}
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(if (local.get $stereo) (then
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{{- end}}
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{{- if .Stereo "addp"}}
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call $pop ;; a
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call $pop ;; b a
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call $swap ;; a b
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call $pop ;; c a b
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f32.add ;; c+a b
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call $swap ;; b c+a
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call $pop ;; d b c+a
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f32.add ;; d+b c+a
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call $push ;; c+a
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call $push
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{{- end}}
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{{- if .StereoAndMono "addp"}}
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)(else
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{{- end}}
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{{- if .Mono "addp"}}
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(call $push (f32.add (call $pop) (call $pop)))
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{{- end}}
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{{- if .StereoAndMono "addp"}}
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))
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{{- end}}
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)
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{{end}}
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{{- if .HasOp "loadnote"}}
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;;-------------------------------------------------------------------------------
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;; LOADNOTE opcode: load the current note, scaled to [-1,1]
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;;-------------------------------------------------------------------------------
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(func $su_op_loadnote (param $stereo i32)
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{{- if .Stereo "loadnote"}}
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(if (local.get $stereo) (then
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(call $su_op_loadnote (i32.const 0))
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))
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{{- end}}
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(f32.convert_i32_u (i32.load (global.get $voice)))
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(f32.mul (f32.const 0.015625))
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(f32.sub (f32.const 1))
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(call $push)
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)
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{{end}}
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{{- if .HasOp "mul"}}
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;;-------------------------------------------------------------------------------
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;; MUL opcode: multiply the two top most signals on the stack
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;;-------------------------------------------------------------------------------
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;; Mono: a b -> a*b a
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;; Stereo: a b c d -> a*c b*d c d
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;;-------------------------------------------------------------------------------
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(func $su_op_mul (param $stereo i32)
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{{- if .StereoAndMono "mul"}}
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(if (local.get $stereo) (then
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{{- end}}
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{{- if .Stereo "mul"}}
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call $pop ;; F: b c d P: a
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call $pop ;; F: c d P: b a
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call $peek2;; F: c d P: d b a
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f32.mul ;; F: c d P: b*d a
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call $push ;; F: b*d c d P: a
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call $peek2;; F: b*d c d P: c a
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f32.mul ;; F: b*d c d P: a*c
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call $push ;; F: a*c b*d c d P:
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{{- end}}
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{{- if .StereoAndMono "mul"}}
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)(else
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{{- end}}
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{{- if .Mono "mul"}}
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(call $push (f32.mul (call $pop) (call $peek)))
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{{- end}}
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{{- if .StereoAndMono "mul"}}
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))
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{{- end}}
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)
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{{end}}
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{{- if .HasOp "mulp"}}
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;;-------------------------------------------------------------------------------
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;; MULP opcode: multiply the two top most signals on the stack and pop
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;;-------------------------------------------------------------------------------
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;; Mono: a b -> a*b
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;; Stereo: a b c d -> a*c b*d
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;;-------------------------------------------------------------------------------
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(func $su_op_mulp (param $stereo i32)
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{{- if .StereoAndMono "mulp"}}
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(if (local.get $stereo) (then
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{{- end}}
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{{- if .Stereo "mulp"}}
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call $pop ;; a
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call $pop ;; b a
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call $swap ;; a b
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call $pop ;; c a b
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f32.mul ;; c*a b
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call $swap ;; b c*a
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call $pop ;; d b c*a
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f32.mul ;; d*b c*a
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call $push ;; c*a
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call $push
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{{- end}}
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{{- if .StereoAndMono "mulp"}}
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)(else
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{{- end}}
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{{- if .Mono "mulp"}}
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(call $push (f32.mul (call $pop) (call $pop)))
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{{- end}}
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{{- if .StereoAndMono "mulp"}}
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))
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{{- end}}
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)
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{{end}}
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{{- if .HasOp "push"}}
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;;-------------------------------------------------------------------------------
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;; PUSH opcode: push the topmost signal on the stack
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;;-------------------------------------------------------------------------------
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;; Mono: a -> a a
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;; Stereo: a b -> a b a b
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;;-------------------------------------------------------------------------------
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(func $su_op_push (param $stereo i32)
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{{- if .Stereo "push"}}
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(if (local.get $stereo) (then
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(call $push (call $peek))
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))
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{{- end}}
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(call $push (call $peek))
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)
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{{end}}
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{{- if or (.HasOp "xch") (.Stereo "delay")}}
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;;-------------------------------------------------------------------------------
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;; XCH opcode: exchange the signals on the stack
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;;-------------------------------------------------------------------------------
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;; Mono: a b -> b a
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;; stereo: a b c d -> c d a b
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;;-------------------------------------------------------------------------------
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(func $su_op_xch (param $stereo i32)
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call $pop
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call $pop
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{{- if .StereoAndMono "xch"}}
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(if (local.get $stereo) (then
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{{- end}}
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{{- if .Stereo "xch"}}
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call $pop ;; F: d P: c b a
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call $swap ;; F: d P: b c a
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call $pop ;; F: P: d b c a
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call $swap ;; F: P: b d c a
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call $push ;; F: b P: d c a
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call $push ;; F: d b P: c a
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call $swap ;; F: d b P: a c
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call $pop ;; F: b P: d a c
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call $swap ;; F: b P: a d c
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call $push ;; F: a b P: d c
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{{- end}}
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{{- if .StereoAndMono "xch"}}
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)(else
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{{- end}}
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{{- if or (.Mono "xch") (.Stereo "delay")}}
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call $swap
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{{- end}}
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{{- if .StereoAndMono "xch"}}
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))
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{{- end}}
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call $push
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call $push
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)
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{{end}}
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