8q.sbk

lcc,一个可变目标c语言编译器的源码

.global main
.section ".text"
.align 4
main:
save %sp,-96,%sp
mov %g0,%i5
.L2:
sll %i5,2,%i4
set 1,%i3
set down,%i2
st %i3,[%i4+%i2]
set up,%i2
st %i3,[%i4+%i2]
.L3:
add %i5,1,%i5
cmp %i5,15; bl .L2; nop
mov %g0,%i5
.L6:
sll %i5,2,%i4
set rows,%i3
set 1,%i2
st %i2,[%i4+%i3]
.L7:
add %i5,1,%i5
cmp %i5,8; bl .L6; nop
mov %g0,%o0
call queens; nop
mov %g0,%i0
.L1:
ret; restore
.type main,#function
.size main,.-main
.global queens
.align 4
queens:
save %sp,-96,%sp
mov %g0,%i5
.L11:
sll %i5,2,%i3
set rows,%i2
ld [%i3+%i2],%i3
cmp %i3,%g0; be .L15; nop
sub %i5,%i0,%i3
sll %i3,2,%i3
set up+28,%i2
ld [%i3+%i2],%i3
cmp %i3,%g0; be .L15; nop
add %i5,%i0,%i3
sll %i3,2,%i3
set down,%i2
ld [%i3+%i2],%i3
cmp %i3,%g0; be .L15; nop
add %i5,%i0,%i3
sll %i3,2,%i3
set down,%i2
st %g0,[%i3+%i2]
sub %i5,%i0,%i3
sll %i3,2,%i3
set up+28,%i2
st %g0,[%i3+%i2]
sll %i5,2,%i3
set rows,%i2
st %g0,[%i3+%i2]
sll %i0,2,%i4
set x,%i3
st %i5,[%i4+%i3]
cmp %i0,7; bne .L19; nop
call print; nop
ba .L20; nop
.L19:
add %i0,1,%o0
call queens; nop
.L20:
set 1,%i4
add %i5,%i0,%i3
sll %i3,2,%i3
set down,%i2
st %i4,[%i3+%i2]
sub %i5,%i0,%i3
sll %i3,2,%i3
set up+28,%i2
st %i4,[%i3+%i2]
sll %i5,2,%i3
set rows,%i2
st %i4,[%i3+%i2]
.L15:
.L12:
add %i5,1,%i5
cmp %i5,8; bl .L11; nop
mov %g0,%i0
.L10:
ret; restore
.type queens,#function
.size queens,.-queens
.global print
.align 4
print:
save %sp,-96,%sp
mov %g0,%i5
.L23:
set .L27,%o0
sll %i5,2,%i4
set x,%i3
ld [%i4+%i3],%i4
add %i4,49,%o1
call printf; nop
.L24:
add %i5,1,%i5
cmp %i5,8; bl .L23; nop
set .L28,%o0
call printf; nop
mov %g0,%i0
.L22:
ret; restore
.type print,#function
.size print,.-print
.section ".bss"
.global x
.type x,#object
.size x,32
.common x,32,4
.global rows
.type rows,#object
.size rows,32
.common rows,32,4
.global down
.type down,#object
.size down,60
.common down,60,4
.global up
.type up,#object
.size up,60
.common up,60,4
.section ".rodata"
.align 1
.L28:
.byte 10
.byte 0
.align 1
.L27:
.byte 37
.byte 99
.byte 32
.byte 0