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Refactored ssa to asm compilation
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This commit is contained in:
Eduard Urbach 2025-07-01 16:13:12 +02:00
parent 562c839835
commit c9c6b94c18
Signed by: akyoto
GPG key ID: 49226B848C78F6C8
8 changed files with 133 additions and 86 deletions
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86
src/core/Compile.go
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@ -1,13 +1,8 @@
package core
import (
"slices"
"git.urbach.dev/cli/q/src/asm"
"git.urbach.dev/cli/q/src/cpu"
"git.urbach.dev/cli/q/src/ssa"
"git.urbach.dev/cli/q/src/types"
"git.urbach.dev/cli/q/src/x86"
)
// Compile turns a function into machine code.
@ -64,84 +59,5 @@ func (f *Function) Compile() {
return
}
f.Assembler.Append(&asm.Label{Name: f.UniqueName})
if !f.IsLeaf() && f.UniqueName != "core.init" {
f.Assembler.Append(&asm.FunctionStart{})
}
for instr := range f.Values {
switch instr := instr.(type) {
case *ssa.Call:
arg := instr.Arguments[0].(*ssa.Function)
fn := f.All.Functions[arg.UniqueName]
if fn.IsExtern() {
f.mv(instr.Arguments[1:], f.CPU.ExternCall)
f.Assembler.Append(&asm.MoveRegisterRegister{Destination: x86.R5, Source: x86.SP})
f.Assembler.Append(&asm.AndRegisterNumber{Destination: x86.SP, Source: x86.SP, Number: -16})
f.Assembler.Append(&asm.SubRegisterNumber{Destination: x86.SP, Source: x86.SP, Number: 32})
f.Assembler.Append(&asm.CallExtern{Library: fn.Package, Function: fn.Name})
f.Assembler.Append(&asm.MoveRegisterRegister{Destination: x86.SP, Source: x86.R5})
} else {
f.mv(instr.Arguments[1:], f.CPU.Call)
f.Assembler.Append(&asm.Call{Label: fn.UniqueName})
}
case *ssa.Syscall:
f.mv(instr.Arguments, f.CPU.Syscall)
f.Assembler.Append(&asm.Syscall{})
case *ssa.Return:
f.Assembler.Append(&asm.Return{})
}
}
if !f.IsLeaf() && f.UniqueName != "core.init" {
f.Assembler.Append(&asm.FunctionEnd{})
}
if f.UniqueName != "core.exit" {
f.Assembler.Append(&asm.Return{})
}
}
func (f *Function) mv(args []ssa.Value, registers []cpu.Register) {
extra := 0
for _, arg := range args {
switch arg.(type) {
case *ssa.Bytes:
extra++
}
}
for i, arg := range slices.Backward(args) {
switch arg := arg.(type) {
case *ssa.Int:
f.Assembler.Append(&asm.MoveRegisterNumber{
Destination: registers[i+extra],
Number: arg.Int,
})
case *ssa.Parameter:
f.Assembler.Append(&asm.MoveRegisterRegister{
Destination: registers[i+extra],
Source: f.CPU.Call[arg.Index],
})
case *ssa.Bytes:
f.Assembler.SetData("data0", arg.Bytes)
f.Assembler.Append(&asm.MoveRegisterNumber{
Destination: registers[i+extra],
Number: len(arg.Bytes),
})
extra--
f.Assembler.Append(&asm.MoveRegisterLabel{
Destination: registers[i+extra],
Label: "data0",
})
}
}
f.ssaToAsm()
}