home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
ftp.ee.pdx.edu
/
2014.02.ftp.ee.pdx.edu.tar
/
ftp.ee.pdx.edu
/
pub
/
users
/
Harry
/
compilers
/
p11
/
tst
/
fact.out.bak
< prev
next >
Wrap
Text File
|
2006-03-05
|
5KB
|
255 lines
!
! PCAT Compiler Version 1.0
!
.global .div
.global .rem
!
! Standard data fields
!
.data
.align 8
temp: .double 0
.text
strNL: .asciz "\n"
strInt: .asciz "%d"
strFlt: .asciz "%g"
strTrue: .asciz "TRUE"
strFalse: .asciz "FALSE"
message1: .asciz "Execution Error: Allocation failed!\n"
message2: .asciz "Execution Error: Pointer is NIL!\n"
message3: .asciz "Execution Error: Read statement failed!\n"
message4: .asciz "Execution Error: Array index is out of bounds!\n"
message5: .asciz "Execution Error: Count is not positive in array constructor!\n"
.align 8
!
! runtimeError1-5
!
! Branch to one of these labels to print an error message and abort.
!
runtimeError1:
set message1,%o0
call printf
nop
call exit
mov 1,%o0
runtimeError2:
set message2,%o0
call printf
nop
call exit
mov 1,%o0
runtimeError3:
set message3,%o0
call printf
nop
call exit
mov 1,%o0
runtimeError4:
set message4,%o0
call printf
nop
call exit
mov 1,%o0
runtimeError5:
set message5,%o0
call printf
nop
call exit
mov 1,%o0
! writeFlt
!
! This routine is passed a single precision floating number in %f0.
! It prints it by calling printf. It uses registers %f0, %f1.
!
writeFlt:
save %sp,-128,%sp
fstod %f0,%f0
set temp,%l0
std %f0,[%l0]
ldd [%l0],%o0
mov %o1,%o2
mov %o0,%o1
set strFlt,%o0
call printf
nop
ret
restore
! writeBool
!
! This routine is passed an integer in %i0/o0. It prints "FALSE" if this
! integer is 0 and "TRUE" otherwise.
!
writeBool:
save %sp,-128,%sp
cmp %i0,%g0
be printFalse
nop
set strTrue,%o0
ba printEnd
nop
printFalse:
set strFalse,%o0
printEnd:
call printf
nop
ret
restore
!
! Additional Fields
!
.data
display0: .word 0
display1: .word 0
.text
str1: .asciz "The first factorial numbers are:"
.align 8
! MAIN...
! mainEntry
.global main
main: save %sp,-120,%sp
set display0,%o0
st %fp,[%o0]
! VAR INITIALIZATION...
! i := 0
set 0,%o0
st %o0,[%fp+-4]
! WRITE STMT...
! writeString str1
sethi %hi(str1),%o0
call printf
or %o0,%lo(str1),%o0
! writeNewline
sethi %hi(strNL),%o0
call printf
or %o0,%lo(strNL),%o0
! FOR...
! t4 := &i
add %fp,-4,%o0
st %o0,[%fp+-20]
! t1 := 1
set 1,%o0
st %o0,[%fp+-8]
! t2 := 10
set 10,%o0
st %o0,[%fp+-12]
! t3 := 1
set 1,%o0
st %o0,[%fp+-16]
! *t4 := t1
ld [%fp+-8],%o0
ld [%fp+-20],%o1
st %o0,[%o1]
! Label_1:
Label_1:
! if t1 > t2 goto Label_2 (integer)
ld [%fp+-8],%o0
ld [%fp+-12],%o1
cmp %o0,%o1
bg Label_2
nop
! WRITE STMT...
! param 1,i
ld [%fp+-4],%o0
st %o0,[%sp+68]
! call p1_fact
call p1_fact
nop
! resultTo t5
st %o0,[%fp+-24]
! writeInt t5
ld [%fp+-24],%o1
sethi %hi(strInt),%o0
call printf
or %o0,%lo(strInt),%o0
! writeNewline
sethi %hi(strNL),%o0
call printf
or %o0,%lo(strNL),%o0
! END FOR...
! t1 := *t4
ld [%fp+-20],%o0
ld [%o0],%o0
st %o0,[%fp+-8]
! t1 := t1 + t3 (integer)
ld [%fp+-8],%o0
ld [%fp+-16],%o1
add %o0,%o1,%o1
st %o1,[%fp+-8]
! *t4 := t1
ld [%fp+-8],%o0
ld [%fp+-20],%o1
st %o0,[%o1]
! goto Label_1
ba Label_1
nop
! Label_2:
Label_2:
! MAIN EXIT...
! mainExit
ret
restore
! PROCEDURE...
! procEntry p1_fact,lexLev=1,frameSize=104
p1_fact: save %sp,-104,%sp
set display1,%o0
ld [%o0],%o1
st %o1,[%fp+64]
st %fp,[%o0]
! formal 1,x
! IF...
! if x < 2 goto Label_3 (integer)
ld [%fp+68],%o0
set 2,%o1
cmp %o0,%o1
bl Label_3
nop
! goto Label_4
ba Label_4
nop
! Label_3:
Label_3:
! THEN...
! RETURN...
! returnExpr 1
set 1,%i0
set display1,%o0
ld [%fp+64],%o1
st %o1,[%o0]
ret
restore
! goto Label_5
ba Label_5
nop
! Label_4:
Label_4:
! ELSE...
! RETURN...
! t7 := x - 1 (integer)
ld [%fp+68],%o0
set 1,%o1
sub %o0,%o1,%o1
st %o1,[%fp+-8]
! param 1,t7
ld [%fp+-8],%o0
st %o0,[%sp+68]
! call p1_fact
call p1_fact
nop
! resultTo t6
st %o0,[%fp+-4]
! t8 := x * t6 (integer)
ld [%fp+68],%o0
ld [%fp+-4],%o1
smul %o0,%o1,%o1
st %o1,[%fp+-12]
! returnExpr t8
ld [%fp+-12],%i0
set display1,%o0
ld [%fp+64],%o1
st %o1,[%o0]
ret
restore
! END IF...
! Label_5:
Label_5: