mescc: Remove jump calculation, use labels: prepare.
* module/language/c99/compiler.mes (test-jump-label->info): New function. * module/mes/as-i386.mes (i386:jump-label-z,i386:jump-label-byte-z, i386:jump-label-g, i386:jump-label-ge,i386:jump-label-nz): New functions. * module/mes/as-i386.scm: Export them.
This commit is contained in:
Jan Nieuwenhuizen
parent
7cce8c6090
commit
5bf3c92938
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@ -1153,6 +1153,60 @@
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(_ ((jump i386:Xjump-z (wrap-as (i386:accu-zero?))) o)))))
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(define (test-jump-label->info info label)
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(define (jump type . test)
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(lambda (o)
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(let* ((info ((ast->info info) o))
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(info (append-text info (wrap-as `(#:comment "jmp test LABEL"))))
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(jump-text (wrap-as (type `(#:local ,label)))))
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(append-text info (append (if (null? test) '() (car test))
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jump-text)))))
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(lambda (o)
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(pmatch o
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;; unsigned
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;; ((le ,a ,b) ((jump i386:jump-label-ncz) o)) ; ja
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;; ((lt ,a ,b) ((jump i386:jump-label-nc) o)) ; jae
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;; ((ge ,a ,b) ((jump i386:jump-label-ncz) o))
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;; ((gt ,a ,b) ((jump i386:jump-label-nc) o))
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((le ,a ,b) ((jump i386:jump-label-g) o))
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((lt ,a ,b) ((jump i386:jump-label-ge) o))
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((ge ,a ,b) ((jump i386:jump-label-g) o))
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((gt ,a ,b) ((jump i386:jump-label-ge) o))
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((ne ,a ,b) ((jump i386:jump-label-nz) o))
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((eq ,a ,b) ((jump i386:jump-label-nz) o))
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((not _) ((jump i386:jump-label-z) o))
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((and ,a ,b)
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(let* ((info ((test-jump-label->info info label) a))
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(info ((test-jump-label->info info label) b)))
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info))
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((or ,a ,b)
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(let* ((here (number->string (length (.text info))))
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(skip-b-label (string-append label "_skip_b_" here))
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(b-label (string-append label "_b_" here))
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(info ((test-jump-label->info info b-label) a))
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(info (append-text info (wrap-as (i386:jump-label `(#:local ,skip-b-label)))))
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(info (append-text info (wrap-as `(#:label ,b-label))))
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(info ((test-jump-label->info info label) b))
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(info (append-text info (wrap-as `(#:label ,skip-b-label)))))
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info))
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((array-ref . _) ((jump i386:jump-label-byte-z
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(wrap-as (i386:accu-zero?))) o))
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((de-ref _) ((jump i386:jump-label-byte-z
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(wrap-as (i386:accu-zero?))) o))
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((assn-expr (p-expr (ident ,name)) ,op ,expr)
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((jump i386:jump-label-z
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(append ((ident->accu info) name)
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(wrap-as (i386:accu-zero?)))) o))
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(_ ((jump i386:jump-label-z (wrap-as (i386:accu-zero?))) o)))))
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(define (cstring->number s)
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(cond ((string-prefix? "0x" s) (string->number (string-drop s 2) 16))
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((string-prefix? "0b" s) (string->number (string-drop s 2) 2))
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@ -349,6 +349,27 @@
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(define (i386:jump-label label)
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`(#xe9 ,label #f #f #f)) ; jmp . + <n>
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(define (i386:jump-label-z label)
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`(#x0f #x84 ,label #f #f #f)) ; jz . + <n>
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(define (i386:jump-label-byte-z label)
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`(#x84 #xc0 ; test %al,%al
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#x74 ,label)) ; jne <n>
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;; signed
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(define (i386:jump-label-g label)
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`(#x0f #x8f ,label #f #f #f)) ; jg/jnle <n>
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;; signed
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(define (i386:jump-label-ge label)
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`(#x0f #x8d ,label #f #f #f)) ; jge/jnl <n>
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(define (i386:jump-label-nz label)
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`(#x0f #x85 ,label #f #f #f)) ; jnz . + <n>
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(define (i386:jump-label-z label)
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`(#x0f #x84 ,label #f #f #f)) ; jz . + <n>
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(define (i386:Xjump-nz n)
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(or n (error "invalid value: i386:Xjump-nz: n: " n))
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`(#x0f #x85 ,@(int->bv32 n))) ; jnz . + <n>
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@ -79,8 +79,15 @@
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i386:label->base
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i386:label-mem->accu
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i386:label-mem->base
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i386:jump
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i386:jump-label
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i386:jump-label-byte-z
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i386:jump-label-g
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i386:jump-label-ge
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i386:jump-label-nz
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i386:jump-label-z
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i386:jump-byte-nz
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i386:jump-byte-z
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i386:jump-c
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@ -84,13 +84,15 @@
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(if (null? text) '()
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(let ((label (car text)))
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(if (number? label) (cons label (loop (cdr text) (1+ off)))
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(if (and (pair? label) (member (car label) '(#:comment #:label)))
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(loop (cdr text) off)
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(let* ((prefix (if (and (pair? (cdr text))
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(if (and (pair? label) (member (car label) '(#:comment #:label))) (loop (cdr text) off)
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(let* ((prefix (cond ((and (pair? (cdr text))
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(pair? (cddr text))
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(boolean? (caddr text))) 4
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2))
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;;(foo (format (current-error-port) "LABEL=~s\n" label))
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(boolean? (caddr text))) 4)
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((and (pair? (cdr text))
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(boolean? (cadr text))) 2)
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(else 1)))
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;; (foo (format (current-error-port) "LABEL=~s\n" label))
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;; (foo (format (current-error-port) " prefix=~s\n" prefix))
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(address? (and (pair? label) (eq? (car label) #:address)))
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(local? (and (pair? label) (eq? (car label) #:local)))
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(relative? (and (pair? label) (eq? (car label) #:relative)))
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@ -109,7 +111,7 @@
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(and=> function-address (lambda (a) (+ a ta)))
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(and=> function-address (lambda (a) (- a off prefix))))
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(error "unresolved label: " label))))
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(append ((if (= prefix 2) int->bv16 int->bv32) address)
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(append ((case prefix ((1) list) ((2) int->bv16) ((4) int->bv32)) address)
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(loop (list-tail text prefix) (+ off prefix))))))))))))
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(define (function-prefix name functions)
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@ -123,24 +123,28 @@
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16)))
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((char? o) (dec->hex (char->integer o)))
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((and (pair? o) (eq? (car o) #:string))
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(format #f "&~a" (string->label (cadr o))))
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(format #f "&~a" (string->label o)))
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((string? o) (format #f "~a" o))
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(else (format #f "~a" o))))
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(define (write-line o)
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(define (write-line function)
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(lambda (o)
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(newline)
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(cond ((not (pair? o))
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(display (dec->hex o)))
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((number? (car o))
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;;(display (string-join (map dec->hex (filter identity o)) " "))
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;; FIXME: c&p from elf-util: function->text
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(let ((text (let loop ((text o))
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(if (null? text) '()
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(let ((label (car text)))
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(if (number? label) (cons label (loop (cdr text)))
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(if (and (pair? label) (member (car label) '(#:comment #:label))) (loop (cdr text))
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(let* ((prefix (if (and (pair? (cdr text))
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(let* ((prefix (cond ((and (pair? (cdr text))
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(pair? (cddr text))
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(boolean? (caddr text))) 4
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2))
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(boolean? (caddr text))) 4)
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((and (pair? (cdr text))
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(boolean? (cadr text))) 2)
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(else 1)))
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(address? (and (pair? label) (eq? (car label) #:address)))
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(local? (and (pair? label) (eq? (car label) #:local)))
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(relative? (and (pair? label) (eq? (car label) #:relative)))
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@ -148,37 +152,51 @@
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(function? (member label function-names))
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(string-label (string->label label))
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(string? (not (equal? string-label "string_#f")))
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(global? (member label global-names)))
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(global? (member label global-names))
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(label (if local? (string-append "local_" function "_" label) label)))
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(cons (cond
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((eq? prefix 1) (format #f "!~a" label))
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((eq? prefix 2) (format #f "@~a" label))
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(local? (format #f "%local_~a" label))
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(function? (format #f "%~a" label))
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(local? (format #f "%~a" label))
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(function? (if address? (format #f "&~a" label)
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(format #f "%~a" label)))
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(string? (format #f "&~a" string-label))
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(global? (format #f "&~a" label))
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(else (format #f "%~a" label)))
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(loop (list-tail text prefix)))))))))))
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(display (string-join (map dec->hex text) " "))))
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((member (car o) '(#:comment))
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(format #t "# ~a" (cadr o)))
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(format #t "# ~s" (cadr o)))
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((eq? (car o) #:label)
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(format #t ":~a\n" (cadr o)))
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(format #t ":local_~a_~a\n" function (cadr o)))
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((and (pair? (car o)) (eq? (caar o) #:label))
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(format #t ":~a\n" (cadar o)))
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(format #t ":local_~a\n" (cadar o)))
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((and (pair? (car o)) (member (caar o) '(#:comment)))
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(format #t "# ~a" (cadar o)))
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(format #t "# ~s" (cadar o)))
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((and (pair? (car o)) (member (caar o) '(#:comment #:label)))
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(write (car o)))
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(else (error "write-line LINE:" o))))
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(else (error "write-line LINE:" o)))))
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(define (write-function o)
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(format #t "\n\n:~a" (car o))
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(if (pair? (cadr o)) (for-each write-line (cdr o))
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(write-line (cdr o))))
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(if (pair? (cadr o)) (for-each (write-line (car o)) (cdr o))
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((write-line (car o)) (cdr o))))
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(define (write-global o)
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(let ((label (if (not (and (pair? (car o)) (eq? (caar o) #:string))) (car o)
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(string->label (car o)))))
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(define (labelize o)
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(if (not (string? o)) o
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(let* ((label o)
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(function? (member label function-names))
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(string-label (string->label label))
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(string? (not (equal? string-label "string_#f")))
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(global? (member label global-names)))
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(if (or global? string?) (format #f "&~a" label)
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(begin (if (not function?) (stderr "warning: unresolved label: ~s\n" label))
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(format #f "&~a" label))))))
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(let* ((label (if (not (and (pair? (car o)) (eq? (caar o) #:string))) (car o)
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(string->label (car o))))
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(data (cdr o))
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(data (filter-map labelize data)))
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(format #t "\n:~a\n" label)
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(display (string-join (map dec->hex (cdr o)) " "))
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(display (string-join (map dec->hex data) " "))
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(newline)))
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(display "### stage0's hex2 format for x86\n")
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(display "### !<label> 1 byte relative\n")
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@ -76,7 +76,6 @@ SCM cell_fun;
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char *env[] = {"foo", "bar", "baz", 0};
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#if 1
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int
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add (int a, int b)
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{
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@ -95,6 +94,7 @@ identity (int i)
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return i;
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}
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#if 1
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int
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label (int c)
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{
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@ -584,7 +584,9 @@ void
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void_func ()
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{
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}
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#endif
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#if 1
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int
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test (char *p)
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{
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@ -809,7 +811,7 @@ test (char *p)
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puts ("t: while (1) ... break;\n");
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while (1) {f=0;break;}
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puts ("t: while (1) ... break;\n");
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puts ("t: while (1) {while (1) break;break;}\n");
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while (1) {while (1) break;break;}
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puts ("t: while (1) { goto label; };\n");
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@ -61,8 +61,8 @@
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#65 01 00 00 # p_filesz
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#65 01 00 00 # p_memsz
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00 20 00 00 # p_filesz
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00 20 00 00 # p_memsz
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ff ff 00 00 # p_filesz
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ff ff 00 00 # p_memsz
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07 00 00 00 # p_flags
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