artemist/mes
1
0
Fork 0
Code Issues Pull requests Packages Projects Releases Wiki Activity

mescc: Fix clobbering of struct by value assign.

Browse source 
* module/mescc/x86_64/as.scm (long-r0->r1-mem): New instruction.
* module/mescc/i386/as.scm: Likewise.
* lib/x86_64-mes/x86_64.M1: Support it.
* module/mescc/compile.scm (r0->r1-mem*n-): Fix clobbering.
This commit is contained in:
Jan Nieuwenhuizen 2018-10-06 20:23:43 +02:00
parent 1f359b07a8
commit dc4b7f3a37
No known key found for this signature in database
GPG key ID: F3C1A0D9C1D65273
5 changed files with 92 additions and 35 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
lib/x86-mes/x86.M1
View file

@ -17,7 +17,7 @@
### along with GNU Mes. If not, see <http://www.gnu.org/licenses/>.
# reduced instruction set: eax, ebx (some ecx for shift, edx for mul, div)
# 185 instructions
# 191 instructions
DEFINE add____$i32,%eax 05
DEFINE add____$i32,%ebx 81c3
@ -84,6 +84,9 @@ DEFINE mov____%al,(%ebx) 8803
DEFINE mov____%al,0x8(%ebp) 8845
DEFINE mov____%ax,(%ebx) 668903
DEFINE mov____%ax,0x8(%ebp) 668945
DEFINE mov____%bx,%bx 6689db
DEFINE mov____%cl,(%ebx) 8a08
DEFINE mov____%cx,(%ebx) 668b08
DEFINE mov____%dl,(%eax) 8810
DEFINE mov____%dl,0x8(%eax) 8850
DEFINE mov____%eax,%ebx 89c3
@ -103,6 +106,8 @@ DEFINE mov____%ecx,(%ebx) 890b
DEFINE mov____%edx,%eax 89d0
DEFINE mov____%edx,%ebx 89d3
DEFINE mov____%esp,%ebp 89e5
DEFINE mov____(%eax),%cl 8a08
DEFINE mov____(%eax),%cx 668b08
DEFINE mov____(%eax),%eax 8b00
DEFINE mov____(%eax),%ecx 8b08
DEFINE mov____(%ebx),%ebx 8b1b
@ -138,6 +143,7 @@ DEFINE movzbl_0x8(%eax),%eax 0fb640
DEFINE movzbl_0x8(%ebp),%eax 0fb645
DEFINE movzwl_%ax,%eax 0fb7c0
DEFINE movzwl_%bx,%ebx 0fb7db
DEFINE movzwl_%bx,%ebx 6689db
DEFINE movzwl_(%eax),%eax 0fb700
DEFINE movzwl_(%ebx),%ebx 0fb71b
DEFINE movzwl_0x32(%eax),%eax 0fb780

6
lib/x86_64-mes/x86_64.M1
View file

@ -18,7 +18,7 @@
# reduced instruction set: rax, rdi (some rcx for shift, rdx for mul, div)
# and r10 as i64 immediate helper
# 206 instructions
# 211 instructions
DEFINE add____$i32,%rax 4805
DEFINE add____$i32,%rbp 4881c5
@ -97,6 +97,7 @@ DEFINE mov____%edi,%rdi 89ff
DEFINE mov____%edi,0x32(%rbp) 89bd
DEFINE mov____%edi,0x8(%rbp) 897d
DEFINE mov____%esi,%eax 89f0
DEFINE mov____%esi,(%rdi) 8937
DEFINE mov____%r8,%rdi 4c89c7
DEFINE mov____%rax,%rax 4889c0
DEFINE mov____%rax,%rdi 4889c7
@ -121,6 +122,7 @@ DEFINE mov____%rdx,%rdi 4889d7
DEFINE mov____%rsi,(%rdi) 488937
DEFINE mov____%rsp,%rbp 4889e5
DEFINE mov____(%rax),%eax 8b00
DEFINE mov____(%rax),%esi 8b30
DEFINE mov____(%rax),%rax 488b00
DEFINE mov____(%rax),%rsi 488b30
DEFINE mov____(%rdi),%edi 8b3f
@ -145,6 +147,8 @@ DEFINE mov____0x8(%rdi),%rbp 488b6f
DEFINE mov____0x8(%rdi),%rsp 488b67
DEFINE movl___%eax,0x32 890425
DEFINE movl___%edi,0x32 893c25
DEFINE movl___%esi,(%rdi) 8937
DEFINE movl___(%rax),%esi 8b30
DEFINE movsbq_%al,%rax 480fbec0
DEFINE movsbq_%dil,%rdi 480fbeff
DEFINE movsbq_(%rax),%rax 480fbe00

27
module/mescc/compile.scm
View file

@ -693,23 +693,20 @@
(as info 'long-r0->r1-mem)))
((and (= size 8) (= reg-size 8)) (as info 'quad-r0->r1-mem))
(else (error "r0->r1-mem*n-: not supported"))))
(else (append (let loop ((i 0))
(else (let loop ((i 0))
(if (>= i n) '()
(append (if (= i 0) '()
(append (as info 'r+value reg-size)
(as info 'r0+value reg-size)))
(case (- n i)
((1) (append (as info 'r+value -3)
(as info 'r0+value -3)
(as info 'r0-mem->r1-mem)))
((2) (append (as info 'r+value -2)
(as info 'r0+value -2)
(as info 'r0-mem->r1-mem)))
((3) (append (as info 'r+value -1)
(as info 'r0+value -1)
(as info 'r0-mem->r1-mem)))
(else (as info 'r0-mem->r1-mem)))
(loop (+ i reg-size)))))))))))
((1) (as info 'byte-r0-mem->r1-mem))
((2) (as info 'word-r0-mem->r1-mem))
((3) (append (as info 'word-r0-mem->r1-mem)
(as info 'r+value 2)
(as info 'r0+value 2)
(loop (+ i 2))))
((4) (append (as info 'long-r0-mem->r1-mem)))
(else (append (as info 'r0-mem->r1-mem)
(as info 'r+value reg-size)
(as info 'r0+value reg-size)
(loop (+ i reg-size))))))))))))
(define (r0->r1-mem*n info n size)
(append-text info (r0->r1-mem*n- info n size)))

21
module/mescc/i386/as.scm
View file

@ -470,6 +470,24 @@
`((,(string-append "mov____(%" r0 "),%" r2))
(,(string-append "mov____%" r2 ",(%" r1 ")")))))
(define (i386:byte-r0-mem->r1-mem info)
(let* ((registers (.registers info))
(r0 (get-r0 info))
(r1 (get-r1 info))
(r2 (car registers))
(l2 (e->l r2)))
`((,(string-append "mov____(%" r0 "),%" l2))
(,(string-append "mov____%" l2 ",(%" r1 ")")))))
(define (i386:word-r0-mem->r1-mem info)
(let* ((registers (.registers info))
(r0 (get-r0 info))
(r1 (get-r1 info))
(r2 (car registers))
(x2 (e->x r2)))
`((,(string-append "mov____(%" r0 "),%" x2))
(,(string-append "mov____%" x2 ",(%" r1 ")")))))
(define (i386:r0+value info v)
(let ((r0 (get-r0 info)))
`(,(if (< (abs v) #x80) `(,(string-append "add____$i8,%" r0) (#:immediate1 ,v))
@ -538,6 +556,7 @@
(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-r0-mem->r1-mem . ,i386:byte-r0-mem->r1-mem)
(byte-signed-r . ,i386:byte-signed-r)
(call-label . ,i386:call-label)
(call-r . ,i386:call-r)
@ -567,6 +586,7 @@
(local-add . ,i386:local-add)
(local-ptr->r . ,i386:local-ptr->r)
(long-r0->r1-mem . ,i386:r0->r1-mem)
(long-r0-mem->r1-mem . ,i386:r0-mem->r1-mem)
(mem->r . ,i386:mem->r)
(nop . ,i386:nop)
(not-r . ,i386:not-r)
@ -618,6 +638,7 @@
(word-r . ,i386:word-r)
(word-r->local+n . ,i386:word-r->local+n)
(word-r0->r1-mem . ,i386:word-r0->r1-mem)
(word-r0-mem->r1-mem . ,i386:word-r0-mem->r1-mem)
(word-signed-r . ,i386:word-signed-r)
(xor-zf . ,i386:xor-zf)
(zf->r . ,i386:zf->r)

31
module/mescc/x86_64/as.scm
View file

@ -567,6 +567,33 @@
`((,(string-append "mov____(%" r0 "),%" r2))
(,(string-append "mov____%" r2 ",(%" r1 ")")))))
(define (x86_64:byte-r0-mem->r1-mem info)
(let* ((registers (.registers info))
(r0 (get-r0 info))
(r1 (get-r1 info))
(r2 (car registers))
(l2 (r->l r2)))
`((,(string-append "mov____(%" r0 "),%" l2))
(,(string-append "mov____%" l2 ",(%" r1 ")")))))
(define (x86_64:word-r0-mem->r1-mem info)
(let* ((registers (.registers info))
(r0 (get-r0 info))
(r1 (get-r1 info))
(r2 (car registers))
(x2 (r->x r2)))
`((,(string-append "mov____(%" r0 "),%" x2))
(,(string-append "mov____%" x2 ",(%" r1 ")")))))
(define (x86_64:long-r0-mem->r1-mem info)
(let* ((registers (.registers info))
(r0 (get-r0 info))
(r1 (get-r1 info))
(r2 (car registers))
(e2 (r->e r2)))
`((,(string-append "mov____(%" r0 "),%" e2))
(,(string-append "mov____%" e2 ",(%" r1 ")")))))
(define (x86_64:r0+value info v)
(let ((r0 (get-r0 info)))
`(,(if (< (abs v) #x80) `(,(string-append "add____$i8,%" r0) (#:immediate1 ,v))
@ -656,7 +683,7 @@
(byte-r . ,x86_64:byte-r)
(byte-r->local+n . ,x86_64:byte-r->local+n)
(byte-r0->r1-mem . ,x86_64:byte-r0->r1-mem)
(byte-r0->r1-mem . ,x86_64:byte-r0->r1-mem)
(byte-r0-mem->r1-mem . ,x86_64:byte-r0-mem->r1-mem)
(byte-signed-r . ,x86_64:byte-signed-r)
(call-label . ,x86_64:call-label)
(call-r . ,x86_64:call-r)
@ -689,6 +716,7 @@
(long-r . ,x86_64:long-r)
(long-r->local+n . ,x86_64:long-r->local+n)
(long-r0->r1-mem . ,x86_64:long-r0->r1-mem)
(long-r0-mem->r1-mem . ,x86_64:long-r0-mem->r1-mem)
(long-signed-r . ,x86_64:long-signed-r)
(mem->r . ,x86_64:mem->r)
(nop . ,x86_64:nop)
@ -744,6 +772,7 @@
(word-r . ,x86_64:word-r)
(word-r->local+n . ,x86_64:word-r->local+n)
(word-r0->r1-mem . ,x86_64:word-r0->r1-mem)
(word-r0-mem->r1-mem . ,x86_64:word-r0-mem->r1-mem)
(word-signed-r . ,x86_64:word-signed-r)
(xor-zf . ,x86_64:xor-zf)
(zf->r . ,x86_64:zf->r)