(load "typecheck.scm")
(load "ast.scm")
+(load "platform.scm")
-(define target 'darwin)
+(define target host-os)
(define (emit . s)
(begin
(codegen-expr a si env)
(emit "movq %rax, ~a(%rbp)" si)
(codegen-expr b (- si wordsize) env)
- (emit "subq ~a(%rbp), %rax" si)
- (emit "not %rax")
- (emit "andq $1, %rax"))
+ (emit "## ~a = ~b" a b)
+ (emit "cmpq ~a(%rbp), %rax" si)
+ (emit "sete %al"))
; 'write file handle addr-string num-bytes
(emit "not %rcx") ; -%rcx = strlen + 1
(emit "dec %rcx")
- (case target
- ('darwin
(emit "movq %rbx, %rsi") ; string addr
(emit "movq %rcx, %rdx") ; num bytes
(emit "movq $1, %rdi") ; file handle (stdout)
- (emit "movq $0x2000004, %rax")) ; syscall 4 (write)
- ('linux
- (emit "mov %rbx, %rsi") ; string addr
- (emit "mov %rcx, %rdx") ; num bytes
- (emit "mov $1, %rax") ; file handle (stdout)
- (emit "mov $1, %rdi"))) ; syscall 1 (write)
+ (case target
+ ('darwin (emit "mov $0x2000004, %rax")) ; syscall 4 (write)
+ ('linux (emit "mov $1, %rax"))) ; syscall 1 (write)
(emit "syscall"))
(define (range s n)
(emit "pop %rbp") ; restore caller's base pointer
(emit "ret")))
-(define (codegen-string label)
- (case target
- ('darwin (emit "movq ~a@GOTPCREL(%rip), %rax" label))
- ('linux (emit "lea $~a, %rax" label))))
-
(define cur-label 0)
(define (fresh-label)
(set! cur-label (+ 1 cur-label))
(emit "~a:" exit-label)))
(define (codegen-expr e si env)
+ (emit "# ~a" e)
(case (ast-type e)
('closure (codegen-closure (cadr e) (caddr e) si env))
('app
('bool-literal (emit "movq $~a, %rax" (if e 1 0)))
('int-literal (emit "movq $~a, %rax" e))
- ('static-string (codegen-string (cadr e)))
+ ('static-string (emit "movq ~a@GOTPCREL(%rip), %rax"
+ (cadr e)))
(else (error #f "don't know how to codegen this"))))
-(define (fold-map f x) (fold-left append '() (map f x)))
(define (free-vars prog)
(define bound '())
(emit "movq %rax, (%rsi)")))
(define (codegen program)
+ (set! cur-label 0)
+ (set! cur-lambda 0)
(let* ((extract-res-0 (extract-strings program))
(strings (car extract-res-0))
(extract-res-1 (extract-lambdas (cdr extract-res-0)))