(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 "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))
('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"))))