diff options
| -rw-r--r-- | src/main.go | 40 |
1 files changed, 38 insertions, 2 deletions
diff --git a/src/main.go b/src/main.go index 9e01cd6..9383dc5 100644 --- a/src/main.go +++ b/src/main.go @@ -136,7 +136,6 @@ func parse(tokens[]Token) []Operation { op.crosslabel = fmt.Sprintf(".loop%d", looplabels[len(looplabels) - 1]) op.label = fmt.Sprintf(".done%d", looplabels[len(looplabels) - 1]) looplabels = looplabels[:len(looplabels) - 1] - default: number, err := strconv.Atoi(tokens[i].str); if err == nil { @@ -146,8 +145,19 @@ func parse(tokens[]Token) []Operation { op.name = "string" op.strData = tokens[i].str op.intData = len(tokens[i].str) - op.label = fmt.Sprintf("string_%d", stringlabel) + op.label = fmt.Sprintf("string_%d", stringlabel) stringlabel++ + } else if len(tokens[i].str) == 9 && tokens[i].str[:8] == "syscall." { + parameters, err := strconv.Atoi(string(tokens[i].str[8])) + /* FIXME: Too much nested */ + if err != nil { + panic("invalid from for syscall") + } + if parameters < 1 || parameters > 6 { + panic("syscall must be called with a number between 1 and 6") + } + op.name = "syscall" + op.intData = parameters } else { panic ("invalid word") } @@ -255,6 +265,32 @@ func compileX86_64(ops[] Operation) { case "number": fmt.Printf(" push %d\n", ops[i].intData) + case "syscall": + switch ops[i].intData { + case 7: + print(" pop r9") + fallthrough + case 6: + print(" pop r8") + fallthrough + case 5: + print(" pop r10") + fallthrough + case 4: + print(" pop rdx") + fallthrough + case 3: + print(" pop rsi") + fallthrough + case 2: + print(" pop rdi") + fallthrough + case 1: + print(" pop rax") + } + print(" syscall") + print(" push rax") + default: panic("Unreachable") } |