mes/module/mescc/i386/as.scm
Jan Nieuwenhuizen d862f1eceb
mescc: Support --align, off by default.
* scripts/mescc.in (parse-opts): Add --align.
* module/mescc/mescc.scm (mescc:compile): Support --align, off by
default.
* module/mescc/M1.scm (infos->M1): Add #:align parameter.
(M1:merge-infos): Likewise.  Keep types.
(info->M1): Likewise.  Make alignment switchable.
* module/mescc/compile.scm (r->ident):  Do not clobber.
(ident-add): Likewise.
(clean-info): Keep types.
* module/mescc/i386/as.scm (i386:r->byte-label): New instruction.
* lib/x86-mes/x86.M1: Add instructions.
* lib/x86_64-mes/x86_64.M1: Add instructions.
* module/mescc/x86_64/as.scm (x86_64:r->byte-label,
x86_64:r->word-label, x86_64:r->long-label): New instruction.
2018-10-06 15:56:14 +02:00

625 lines
19 KiB
Scheme

;;; GNU Mes --- Maxwell Equations of Software
;;; Copyright © 2016,2017,2018 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
;;;
;;; This file is part of GNU Mes.
;;;
;;; GNU Mes is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Mes is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Mes. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;;; define i386 assembly
;;; Code:
(define-module (mescc i386 as)
#:use-module (mes guile)
#:use-module (mescc as)
#:use-module (mescc info)
#:export (
i386:instructions
))
(define (e->x o)
(string-drop o 1))
(define (e->l o)
(string-append (string-drop-right (string-drop o 1) 1) "l"))
(define (i386:function-preamble . rest)
'(("push___%ebp")
("mov____%esp,%ebp")))
(define (i386:function-locals . rest)
`(("sub____$i32,%esp" (#:immediate ,(+ (* 4 1025) (* 20 4)))))) ; 4*1024 buf, 20 local vars
(define (i386:r->local info n)
(or n (error "invalid value: i386:r->local: " n))
(let ((r (get-r info))
(n (- 0 (* 4 n))))
`(,(if (< (abs n) #x80) `(,(string-append "mov____%" r ",0x8(%ebp)") (#:immediate1 ,n))
`(,(string-append "mov____%" r ",0x32(%ebp)") (#:immediate ,n))))))
(define (i386:value->r info v)
(let ((r (get-r info)))
`((,(string-append "mov____$i32,%" r) (#:immediate ,v)))))
(define (i386:ret . rest)
'(("leave")
("ret")))
(define (i386:r-zero? info)
(let ((r (get-r info)))
`((,(string-append "test___%" r "," "%" r)))))
(define (i386:local->r info n)
(let ((r (get-r info))
(n (- 0 (* 4 n))))
`(,(if (< (abs n) #x80) `(,(string-append "mov____0x8(%ebp),%" r) (#:immediate1 ,n))
`(,(string-append "mov____0x32(%ebp),%" r) (#:immediate ,n))))))
(define (i386:r0+r1 info)
(let ((r0 (get-r0 info))
(r1 (get-r1 info)))
`((,(string-append "add____%" r1 ",%" r0)))))
(define (i386:call-label info label n)
`((call32 (#:offset ,label))
("add____$i8,%esp" (#:immediate1 ,(* n 4)))))
(define (i386:r->arg info i)
(let ((r (get-r info)))
`((,(string-append "push___%" r)))))
(define (i386:label->arg info label i)
`(("push___$i32" (#:address ,label))))
(define (i386:r-negate info)
(let* ((r (get-r info))
(l (e->l r)))
`((,(string-append "sete___%" l))
(,(string-append "movzbl_%" l ",%" r)))))
(define (i386:r0-r1 info)
(let ((r0 (get-r0 info))
(r1 (get-r1 info)))
`((,(string-append "sub____%" r1 ",%" r0)))))
(define (i386:zf->r info)
(let* ((r (get-r info))
(l (e->l r)))
`((,(string-append "sete___%" l))
(,(string-append "movzbl_%" l ",%" r)))))
(define (i386:xor-zf info)
'(("lahf")
("xor____$i8,%ah" (#:immediate1 #x40))
("sahf")))
(define (i386:r->local+n info id n)
(let ((n (+ (- 0 (* 4 id)) n))
(r (get-r info)))
`(,(if (< (abs n) #x80) `(,(string-append "mov____%" r ",0x8(%ebp)") (#:immediate1 ,n))
`(,(string-append "mov____%" r ",0x32(%ebp)") (#:immediate ,n))))))
(define (i386:r-mem-add info v)
(let ((r (get-r info)))
`(,(if (< (abs v) #x80) `(,(string-append "add____$i8,(%" r ")") (#:immediate1 ,v))
`(,(string-append "add____$i32,(%" r ")") (#:immediate ,v))))))
(define (i386:r-byte-mem-add info v)
(let ((r (get-r info)))
`((,(string-append "addb___$i8,(%" r ")") (#:immediate1 ,v)))))
(define (i386:r-word-mem-add info v)
(let ((r (get-r info)))
`((,(string-append "addw___$i8,(%" r ")") (#:immediate2 ,v)))))
(define (i386:local-ptr->r info n)
(let ((r (get-r info)))
(let ((n (- 0 (* 4 n))))
`((,(string-append "mov____%ebp,%" r))
,(if (< (abs n) #x80) `(,(string-append "add____$i8,%" r) (#:immediate1 ,n))
`(,(string-append "add____$i32,%" r) (#:immediate ,n)))))))
(define (i386:label->r info label)
(let ((r (get-r info)))
`((,(string-append "mov____$i32,%" r) (#:address ,label)))))
(define (i386:r0->r1 info)
(let ((r0 (get-r0 info))
(r1 (get-r1 info)))
`((,(string-append "mov____%" r0 ",%" r1)))))
(define (i386:byte-mem->r info)
(let ((r (get-r info)))
`((,(string-append "movzbl_(%" r "),%" r)))))
(define (i386:byte-r info)
(let* ((r (get-r info))
(l (e->l r)))
`((,(string-append "movzbl_%" l ",%" r)))))
(define (i386:byte-signed-r info)
(let* ((r (get-r info))
(l (e->l r)))
`((,(string-append "movsbl_%" l ",%" r)))))
(define (i386:word-r info)
(let* ((r (get-r info))
(x (e->x r)))
`((,(string-append "movzwl_%" x ",%" r)))))
(define (i386:word-signed-r info)
(let* ((r (get-r info))
(x (e->x r)))
`((,(string-append "movswl_%" x ",%" r)))))
(define (i386:jump info label)
`(("jmp32 " (#:offset ,label))))
(define (i386:jump-z info label)
`(("je32 " (#:offset ,label))))
(define (i386:jump-nz info label)
`(("jne32 " (#:offset ,label))))
(define (i386:jump-byte-z info label)
`(("test___%al,%al")
("je32 " (#:offset ,label))))
;; signed
(define (i386:jump-g info label)
`(("jg32 " (#:offset ,label))))
(define (i386:jump-ge info label)
`(("jge32 " (#:offset ,label))))
(define (i386:jump-l info label)
`(("jl32 " (#:offset ,label))))
(define (i386:jump-le info label)
`(("jle32 " (#:offset ,label))))
;; unsigned
(define (i386:jump-a info label)
`(("ja32 " (#:offset ,label))))
(define (i386:jump-ae info label)
`(("jae32 " (#:offset ,label))))
(define (i386:jump-b info label)
`(("jb32 " (#:offset ,label))))
(define (i386:jump-be info label)
`(("jbe32 " (#:offset ,label))))
(define (i386:byte-r0->r1-mem info)
(let* ((r0 (get-r0 info))
(r1 (get-r1 info))
(l0 (e->l r0)))
`((,(string-append "mov____%" l0 ",(%" r1 ")")))))
(define (i386:label-mem->r info label)
(let ((r (get-r info)))
`((,(string-append "mov____0x32,%" r) (#:address ,label)))))
(define (i386:word-mem->r info)
(let ((r (get-r info)))
`((,(string-append "movzwl_(%" r "),%" r)))))
(define (i386:mem->r info)
(let ((r (get-r info)))
`((,(string-append "mov____(%" r "),%" r)))))
(define (i386:local-add info n v)
(let ((n (- 0 (* 4 n))))
`(,(if (and (< (abs n) #x80)
(< (abs v) #x80)) `("add____$i8,0x8(%ebp)" (#:immediate1 ,n) (#:immediate1 ,v))
`("add____$i32,0x32(%ebp)" (#:immediate ,n) (#:immediate ,v))))))
(define (i386:label-mem-add info label v)
`(,(if (< (abs v) #x80) `("add____$i8,0x32" (#:address ,label) (#:immediate1 ,v))
`("add____$i32,0x32" (#:address ,label) (#:immediate ,v)))))
(define (i386:nop info)
'(("nop")))
(define (i386:swap-r0-r1 info)
(let ((r0 (get-r0 info))
(r1 (get-r1 info)))
`((,(string-append "xchg___%" r0 ",%" r1)))))
;; signed
(define (i386:g?->r info)
(let* ((r (get-r info))
(l (e->l r)))
`((,(string-append "setg___%" l))
(,(string-append "movzbl_%" l ",%" r)))))
(define (i386:ge?->r info)
(let* ((r (get-r info))
(l (e->l r)))
`((,(string-append "setge__%" l))
(,(string-append "movzbl_%" l ",%" r)))))
(define (i386:l?->r info)
(let* ((r (get-r info))
(l (e->l r)))
`((,(string-append "setl___%" l))
(,(string-append "movzbl_%" l ",%" r)))))
(define (i386:le?->r info)
(let* ((r (get-r info))
(l (e->l r)))
`((,(string-append "setle__%" l))
(,(string-append "movzbl_%" l ",%" r)))))
;; unsigned
(define (i386:a?->r info)
(let* ((r (get-r info))
(l (e->l r)))
`((,(string-append "seta___%" l))
(,(string-append "movzbl_%" l ",%" r)))))
(define (i386:ae?->r info)
(let* ((r (get-r info))
(l (e->l r)))
`((,(string-append "setae__%" l))
(,(string-append "movzbl_%" l ",%" r)))))
(define (i386:b?->r info)
(let* ((r (get-r info))
(l (e->l r)))
`((,(string-append "setb___%" l))
(,(string-append "movzbl_%" l ",%" r)))))
(define (i386:be?->r info)
(let* ((r (get-r info))
(l (e->l r)))
`((,(string-append "setbe__%" l))
(,(string-append "movzbl_%" l ",%" r)))))
(define (i386:test-r info)
(let ((r (get-r info)))
`((,(string-append "test___%" r ",%" r)))))
(define (i386:r->label info label)
(let ((r (get-r info)))
`((,(string-append "mov____%" r ",0x32") (#:address ,label)))))
(define (i386:r->byte-label info label)
(let* ((r (get-r info))
(l (e->l r)))
`((,(string-append "movb___%" l ",0x32") (#:address ,label)))))
(define (i386:r->word-label info label)
(let* ((r (get-r info))
(x (e->x r)))
`((,(string-append "movw___%" x ",0x32") (#:address ,label)))))
(define (i386:call-r info n)
(let ((r (get-r info)))
`((,(string-append "call___*%" r))
("add____$i8,%esp" (#:immediate1 ,(* n 4))))))
(define (i386:r0*r1 info)
(let ((allocated (.allocated info))
(r0 (get-r0 info))
(r1 (get-r1 info)))
(if (not (member "edx" allocated))
`(,@(if (equal? r0 "eax") '()
`(("push___%eax")
(,(string-append "mov____%" r0 ",%eax"))))
(,(string-append "mul____%" r1))
,@(if (equal? r0 "eax") '()
`((,(string-append "mov____%eax,%" r0))
("pop____%eax"))))
`(("push___%eax")
("push___%ebx")
("push___%edx")
(,(string-append "mov____%" r1 ",%ebx"))
(,(string-append "mov____%" r0 ",%eax"))
(,(string-append "mul____%" r1))
("pop____%edx")
("pop____%ebx")
(,(string-append "mov____%eax,%" r0))
("pop____%eax")))))
(define (i386:r0<<r1 info)
(let ((r0 (get-r0 info))
(r1 (get-r1 info)))
`((,(string-append "mov____%" r1 ",%ecx"))
(,(string-append "shl____%cl,%" r0)))))
(define (i386:r0>>r1 info)
(let ((r0 (get-r0 info))
(r1 (get-r1 info)))
`((,(string-append "mov____%" r1 ",%ecx"))
(,(string-append "shr____%cl,%" r0)))))
(define (i386:r0-and-r1 info)
(let ((r0 (get-r0 info))
(r1 (get-r1 info)))
`((,(string-append "and____%" r1 ",%" r0)))))
(define (i386:r0/r1 info)
(let ((allocated (.allocated info))
(r0 (get-r0 info))
(r1 (get-r1 info)))
(if (not (member "edx" allocated))
`(,@(if (equal? r0 "eax") '()
`(("push___%eax")
(,(string-append "mov____%" r0 ",%eax"))))
("xor____%edx,%edx")
(,(string-append "idiv___%" r1))
,@(if (equal? r0 "eax") '()
`((,(string-append "mov____%eax,%" r0))
("pop____%eax"))))
`(("push___%eax")
("push___%ebx")
("push___%edx")
(,(string-append "mov____%" r1 ",%ebx"))
(,(string-append "mov____%" r0 ",%eax"))
("xor____%edx,%edx")
(,(string-append "idiv___%ebx"))
("pop____%edx")
("pop____%ebx")
(,(string-append "mov____%eax,%" r0))
("pop____%eax")))))
(define (i386:r0%r1 info)
(let ((allocated (.allocated info))
(r0 (get-r0 info))
(r1 (get-r1 info)))
(if (not (member "edx" allocated))
`(,@(if (equal? r0 "eax") '()
`(("push___%eax")
(,(string-append "mov____%" r0 ",%eax"))))
("xor____%edx,%edx")
(,(string-append "idiv___%" r1))
(,(string-append "mov____%edx,%" r0)))
`(("push___%eax")
("push___%ebx")
("push___%edx")
(,(string-append "mov____%" r1 ",%ebx"))
(,(string-append "mov____%" r0 ",%eax"))
("xor____%edx,%edx")
(,(string-append "idiv___%ebx"))
("pop____%edx")
("pop____%ebx")
(,(string-append "mov____%edx,%" r0))
("pop____%eax")))))
(define (i386:r+value info v)
(let ((r (get-r info)))
`(,(if (< (abs v) #x80) `(,(string-append "add____$i8,%" r) (#:immediate1 ,v))
`(,(string-append "add____$i32,%" r) (#:immediate ,v))))))
(define (i386:r0->r1-mem info)
(let ((r0 (get-r0 info))
(r1 (get-r1 info)))
`((,(string-append "mov____%" r0 ",(%" r1 ")")))))
(define (i386:byte-r0->r1-mem info)
(let* ((r0 (get-r0 info))
(r1 (get-r1 info))
(l0 (e->l r0)))
`((,(string-append "mov____%" l0 ",(%" r1 ")")))))
(define (i386:word-r0->r1-mem info)
(let* ((r0 (get-r0 info))
(r1 (get-r1 info))
(x0 (e->x r0)))
`((,(string-append "mov____%" x0 ",(%" r1 ")")))))
(define (i386:r-cmp-value info v)
(let ((r (get-r info)))
`(,(if (< (abs v) #x80) `(,(string-append "cmp____$i8,%" r) (#:immediate1 ,v))
`(,(string-append "cmp____$i32,%" r) (#:immediate ,v))))))
(define (i386:push-register info r)
`((,(string-append "push___%" r))))
(define (i386:pop-register info r)
`((,(string-append "pop____%" r))))
(define (i386:return->r info)
(let ((r (get-r info)))
(if (equal? r "eax") '()
`((,(string-append "mov____%eax,%" r))))))
(define (i386:r0-or-r1 info)
(let ((r0 (get-r0 info))
(r1 (get-r1 info)))
`((,(string-append "or_____%" r1 ",%" r0)))))
(define (i386:shl-r info n)
(let ((r (get-r info)))
`((,(string-append "shl____$i8,%" r) (#:immediate1 ,n)))))
(define (i386:r+r info)
(let ((r (get-r info)))
`((,(string-append "add____%" r ",%" r)))))
(define (i386:not-r info)
(let ((r (get-r info)))
`((,(string-append "not____%" r)))))
(define (i386:r0-xor-r1 info)
(let ((r0 (get-r0 info))
(r1 (get-r1 info)))
`((,(string-append "xor____%" r1 ",%" r0)))))
(define (i386:r0-mem->r1-mem info)
(let* ((registers (.registers info))
(r0 (get-r0 info))
(r1 (get-r1 info))
(r2 (car registers)))
`((,(string-append "mov____(%" r0 "),%" r2))
(,(string-append "mov____%" r2 ",(%" r1 ")")))))
(define (i386:r0+value info v)
(let ((r0 (get-r0 info)))
`(,(if (< (abs v) #x80) `(,(string-append "add____$i8,%" r0) (#:immediate1 ,v))
`(,(string-append "add____$i32,%" r0) (#:immediate ,v))))))
(define (i386:value->r0 info v)
(let ((r0 (get-r0 info)))
`((,(string-append "mov____$i32,%" r0) (#:immediate ,v)))))
(define (i386:byte-r->local+n info id n)
(let* ((n (+ (- 0 (* 4 id)) n))
(r (get-r info))
(l (e->l r) ))
`(,(if (< (abs n) #x80) `(,(string-append "mov____%" l ",0x8(%ebp)") (#:immediate1 ,n))
`(,(string-append "mov____%" l ",0x32(%ebp)") (#:immediate ,n))))))
(define (i386:word-r->local+n info id n)
(let* ((n (+ (- 0 (* 4 id)) n))
(r (get-r info))
(x (e->x r)))
`(,(if (< (abs n) #x80) `(,(string-append "mov____%" x ",0x8(%ebp)") (#:immediate1 ,n))
`(,(string-append "mov____%" x ",0x32(%ebp)") (#:immediate ,n))))))
(define (i386:r-and info v)
(let ((r (get-r info)))
`((,(string-append "and____$i32,%" r) (#:immediate ,v)))))
(define (i386:push-r0 info)
(let ((r0 (get-r0 info)))
`((,(string-append "push___%" r0)))))
(define (i386:r1->r0 info)
(let ((r0 (get-r0 info))
(r1 (get-r1 info)))
`((,(string-append "mov____%" r1 ",%" r0)))))
(define (i386:pop-r0 info)
(let ((r0 (get-r0 info)))
`((,(string-append "pop____%" r0)))))
(define (i386:swap-r-stack info)
(let ((r (get-r info)))
`((,(string-append "xchg___%" r ",(%esp)")))))
(define (i386:swap-r1-stack info)
(let ((r0 (get-r0 info)))
`((,(string-append "xchg___%" r0 ",(%esp)")))))
(define (i386:r2->r0 info)
(let ((r0 (get-r0 info))
(allocated (.allocated info)))
(if (> (length allocated) 2)
(let ((r2 (cadddr allocated)))
`((,(string-append "mov____%" r2 ",%" r1))))
`((,(string-append "pop____%" r0))
(,(string-append "push___%" r0))))))
(define i386:instructions
`(
(a?->r . ,i386:a?->r)
(ae?->r . ,i386:ae?->r)
(b?->r . ,i386:b?->r)
(be?->r . ,i386:be?->r)
(byte-mem->r . ,i386:byte-mem->r)
(byte-r . ,i386:byte-r)
(byte-r->local+n . ,i386:byte-r->local+n)
(byte-r0->r1-mem . ,i386:byte-r0->r1-mem)
(byte-r0->r1-mem . ,i386:byte-r0->r1-mem)
(byte-signed-r . ,i386:byte-signed-r)
(call-label . ,i386:call-label)
(call-r . ,i386:call-r)
(function-locals . ,i386:function-locals)
(function-preamble . ,i386:function-preamble)
(g?->r . ,i386:g?->r)
(ge?->r . ,i386:ge?->r)
(jump . ,i386:jump)
(jump-a . ,i386:jump-a)
(jump-ae . ,i386:jump-ae)
(jump-b . ,i386:jump-b)
(jump-be . ,i386:jump-be)
(jump-byte-z . ,i386:jump-byte-z)
(jump-g . , i386:jump-g)
(jump-ge . , i386:jump-ge)
(jump-l . ,i386:jump-l)
(jump-le . ,i386:jump-le)
(jump-nz . ,i386:jump-nz)
(jump-z . ,i386:jump-z)
(l?->r . ,i386:l?->r)
(label->arg . ,i386:label->arg)
(label->r . ,i386:label->r)
(label-mem->r . ,i386:label-mem->r)
(label-mem-add . ,i386:label-mem-add)
(le?->r . ,i386:le?->r)
(local->r . ,i386:local->r)
(local-add . ,i386:local-add)
(local-ptr->r . ,i386:local-ptr->r)
(long-r0->r1-mem . ,i386:r0->r1-mem)
(mem->r . ,i386:mem->r)
(nop . ,i386:nop)
(not-r . ,i386:not-r)
(pop-r0 . ,i386:pop-r0)
(pop-register . ,i386:pop-register)
(push-r0 . ,i386:push-r0)
(push-register . ,i386:push-register)
(r+r . ,i386:r+r)
(r+value . ,i386:r+value)
(r->arg . ,i386:r->arg)
(r->byte-label . ,i386:r->byte-label)
(r->label . ,i386:r->label)
(r->local . ,i386:r->local)
(r->local+n . ,i386:r->local+n)
(r->word-label . ,i386:r->word-label)
(r-and . ,i386:r-and)
(r-byte-mem-add . ,i386:r-byte-mem-add)
(r-cmp-value . ,i386:r-cmp-value)
(r-mem-add . ,i386:r-mem-add)
(r-negate . ,i386:r-negate)
(r-word-mem-add . ,i386:r-word-mem-add)
(r-zero? . ,i386:r-zero?)
(r0%r1 . ,i386:r0%r1)
(r0*r1 . ,i386:r0*r1)
(r0+r1 . ,i386:r0+r1)
(r0+value . ,i386:r0+value)
(r0->r1 . ,i386:r0->r1)
(r0->r1-mem . ,i386:r0->r1-mem)
(r0-and-r1 . ,i386:r0-and-r1)
(r0-mem->r1-mem . ,i386:r0-mem->r1-mem)
(r0-or-r1 . ,i386:r0-or-r1)
(r0-r1 . ,i386:r0-r1)
(r0-xor-r1 . ,i386:r0-xor-r1)
(r0/r1 . ,i386:r0/r1)
(r0<<r1 . ,i386:r0<<r1)
(r0>>r1 . ,i386:r0>>r1)
(r1->r0 . ,i386:r1->r0)
(r2->r0 . ,i386:r2->r0)
(ret . ,i386:ret)
(return->r . ,i386:return->r)
(shl-r . ,i386:shl-r)
(swap-r-stack . ,i386:swap-r-stack)
(swap-r0-r1 . ,i386:swap-r0-r1)
(swap-r1-stack . ,i386:swap-r1-stack)
(test-r . ,i386:test-r)
(value->r . ,i386:value->r)
(value->r0 . ,i386:value->r0)
(word-mem->r . ,i386:word-mem->r)
(word-r . ,i386:word-r)
(word-r->local+n . ,i386:word-r->local+n)
(word-r0->r1-mem . ,i386:word-r0->r1-mem)
(word-signed-r . ,i386:word-signed-r)
(xor-zf . ,i386:xor-zf)
(zf->r . ,i386:zf->r)
))