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2006-03-05
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5KB
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248 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
.text
str6: .asciz "ERROR 3"
str5: .asciz "OK 3"
str4: .asciz "OK 2"
str3: .asciz "ERROR 2"
str2: .asciz "ERROR 1"
str1: .asciz "OK 1"
.align 8
! MAIN...
! mainEntry
.global main
main: save %sp,-104,%sp
set display0,%o0
st %fp,[%o0]
! VAR INITIALIZATION...
! f := 0
set 0,%o0
st %o0,[%fp+-4]
! VAR INITIALIZATION...
! t := 1
set 1,%o0
st %o0,[%fp+-8]
! IF...
! if t = 0 goto Label_2 (integer)
ld [%fp+-8],%o0
set 0,%o1
cmp %o0,%o1
be Label_2
nop
! goto Label_1
ba Label_1
nop
! Label_1:
Label_1:
! THEN...
! 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
! goto Label_3
ba Label_3
nop
! Label_2:
Label_2:
! ELSE...
! WRITE STMT...
! writeString str2
sethi %hi(str2),%o0
call printf
or %o0,%lo(str2),%o0
! writeNewline
sethi %hi(strNL),%o0
call printf
or %o0,%lo(strNL),%o0
! END IF...
! Label_3:
Label_3:
! IF...
! if f = 0 goto Label_5 (integer)
ld [%fp+-4],%o0
set 0,%o1
cmp %o0,%o1
be Label_5
nop
! goto Label_4
ba Label_4
nop
! Label_4:
Label_4:
! THEN...
! WRITE STMT...
! writeString str3
sethi %hi(str3),%o0
call printf
or %o0,%lo(str3),%o0
! writeNewline
sethi %hi(strNL),%o0
call printf
or %o0,%lo(strNL),%o0
! goto Label_6
ba Label_6
nop
! Label_5:
Label_5:
! ELSE...
! WRITE STMT...
! writeString str4
sethi %hi(str4),%o0
call printf
or %o0,%lo(str4),%o0
! writeNewline
sethi %hi(strNL),%o0
call printf
or %o0,%lo(strNL),%o0
! END IF...
! Label_6:
Label_6:
! IF...
! if f = f goto Label_7 (integer)
ld [%fp+-4],%o0
ld [%fp+-4],%o1
cmp %o0,%o1
be Label_7
nop
! goto Label_8
ba Label_8
nop
! Label_7:
Label_7:
! THEN...
! WRITE STMT...
! writeString str5
sethi %hi(str5),%o0
call printf
or %o0,%lo(str5),%o0
! writeNewline
sethi %hi(strNL),%o0
call printf
or %o0,%lo(strNL),%o0
! goto Label_9
ba Label_9
nop
! Label_8:
Label_8:
! ELSE...
! WRITE STMT...
! writeString str6
sethi %hi(str6),%o0
call printf
or %o0,%lo(str6),%o0
! writeNewline
sethi %hi(strNL),%o0
call printf
or %o0,%lo(strNL),%o0
! END IF...
! Label_9:
Label_9:
! MAIN EXIT...
! mainExit
ret
restore