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hello_intout.s
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hello_intout.s
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## ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
.globl Bool..vtable
Bool..vtable: ## virtual function table for Bool
.quad string1
.quad Bool..new
.quad Object.abort
.quad Object.copy
.quad Object.type_name
## ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
.globl IO..vtable
IO..vtable: ## virtual function table for IO
.quad string2
.quad IO..new
.quad Object.abort
.quad Object.copy
.quad Object.type_name
.quad IO.in_int
.quad IO.in_string
.quad IO.out_int
.quad IO.out_string
## ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
.globl Int..vtable
Int..vtable: ## virtual function table for Int
.quad string3
.quad Int..new
.quad Object.abort
.quad Object.copy
.quad Object.type_name
## ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
.globl Main..vtable
Main..vtable: ## virtual function table for Main
.quad string4
.quad Main..new
.quad Object.abort
.quad Object.copy
.quad Object.type_name
.quad IO.in_int
.quad IO.in_string
.quad IO.out_int
.quad IO.out_string
.quad Main.main
## ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
.globl Object..vtable
Object..vtable: ## virtual function table for Object
.quad string5
.quad Object..new
.quad Object.abort
.quad Object.copy
.quad Object.type_name
## ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
.globl String..vtable
String..vtable: ## virtual function table for String
.quad string6
.quad String..new
.quad Object.abort
.quad Object.copy
.quad Object.type_name
.quad String.concat
.quad String.length
.quad String.substr
## ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
.globl Bool..new
Bool..new: ## constructor for Bool
pushq %rbp
movq %rsp, %rbp
## stack room for temporaries: 1
movq $8, %r14
subq %r14, %rsp
## return address handling
movq $4, %r12
movq $8, %rsi
movq %r12, %rdi
call calloc
movq %rax, %r12
## store class tag, object size and vtable pointer
movq $0, %r14
movq %r14, 0(%r12)
movq $4, %r14
movq %r14, 8(%r12)
movq $Bool..vtable, %r14
movq %r14, 16(%r12)
## initialize attributes
## self[3] holds field (raw content) (Int)
movq $0, %r13
movq %r13, 24(%r12)
## self[3] (raw content) initializer -- none
movq %r12, %r13
## return address handling
movq %rbp, %rsp
popq %rbp
ret
## ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
.globl IO..new
IO..new: ## constructor for IO
pushq %rbp
movq %rsp, %rbp
## stack room for temporaries: 1
movq $8, %r14
subq %r14, %rsp
## return address handling
movq $3, %r12
movq $8, %rsi
movq %r12, %rdi
call calloc
movq %rax, %r12
## store class tag, object size and vtable pointer
movq $10, %r14
movq %r14, 0(%r12)
movq $3, %r14
movq %r14, 8(%r12)
movq $IO..vtable, %r14
movq %r14, 16(%r12)
movq %r12, %r13
## return address handling
movq %rbp, %rsp
popq %rbp
ret
## ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
.globl Int..new
Int..new: ## constructor for Int
pushq %rbp
movq %rsp, %rbp
## stack room for temporaries: 1
movq $8, %r14
subq %r14, %rsp
## return address handling
movq $4, %r12
movq $8, %rsi
movq %r12, %rdi
call calloc
movq %rax, %r12
## store class tag, object size and vtable pointer
movq $1, %r14
movq %r14, 0(%r12)
movq $4, %r14
movq %r14, 8(%r12)
movq $Int..vtable, %r14
movq %r14, 16(%r12)
## initialize attributes
## self[3] holds field (raw content) (Int)
movq $0, %r13
movq %r13, 24(%r12)
## self[3] (raw content) initializer -- none
movq %r12, %r13
## return address handling
movq %rbp, %rsp
popq %rbp
ret
## ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
.globl Main..new
Main..new: ## constructor for Main
pushq %rbp
movq %rsp, %rbp
## stack room for temporaries: 1
movq $8, %r14
subq %r14, %rsp
## return address handling
movq $3, %r12
movq $8, %rsi
movq %r12, %rdi
call calloc
movq %rax, %r12
## store class tag, object size and vtable pointer
movq $11, %r14
movq %r14, 0(%r12)
movq $3, %r14
movq %r14, 8(%r12)
movq $Main..vtable, %r14
movq %r14, 16(%r12)
movq %r12, %r13
## return address handling
movq %rbp, %rsp
popq %rbp
ret
## ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
.globl Object..new
Object..new: ## constructor for Object
pushq %rbp
movq %rsp, %rbp
## stack room for temporaries: 1
movq $8, %r14
subq %r14, %rsp
## return address handling
movq $3, %r12
movq $8, %rsi
movq %r12, %rdi
call calloc
movq %rax, %r12
## store class tag, object size and vtable pointer
movq $12, %r14
movq %r14, 0(%r12)
movq $3, %r14
movq %r14, 8(%r12)
movq $Object..vtable, %r14
movq %r14, 16(%r12)
movq %r12, %r13
## return address handling
movq %rbp, %rsp
popq %rbp
ret
## ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
.globl String..new
String..new: ## constructor for String
pushq %rbp
movq %rsp, %rbp
## stack room for temporaries: 1
movq $8, %r14
subq %r14, %rsp
## return address handling
movq $4, %r12
movq $8, %rsi
movq %r12, %rdi
call calloc
movq %rax, %r12
## store class tag, object size and vtable pointer
movq $3, %r14
movq %r14, 0(%r12)
movq $4, %r14
movq %r14, 8(%r12)
movq $String..vtable, %r14
movq %r14, 16(%r12)
## initialize attributes
## self[3] holds field (raw content) (String)
movq $the.empty.string, %r13
movq %r13, 24(%r12)
## self[3] (raw content) initializer -- none
movq %r12, %r13
## return address handling
movq %rbp, %rsp
popq %rbp
ret
## ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
.globl Object.abort
Object.abort: ## method definition
pushq %rbp
movq %rsp, %rbp
movq 16(%rbp), %r12
## stack room for temporaries: 1
movq $8, %r14
subq %r14, %rsp
## return address handling
## method body begins
movq $string7, %r13
movq %r13, %rdi
call cooloutstr
movl $0, %edi
call exit
.globl Object.abort.end
Object.abort.end: ## method body ends
## return address handling
movq %rbp, %rsp
popq %rbp
ret
## ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
.globl Object.copy
Object.copy: ## method definition
pushq %rbp
movq %rsp, %rbp
movq 16(%rbp), %r12
## stack room for temporaries: 1
movq $8, %r14
subq %r14, %rsp
## return address handling
## method body begins
movq 8(%r12), %r14
movq $8, %rsi
movq %r14, %rdi
call calloc
movq %rax, %r13
pushq %r13
.globl l1
l1: cmpq $0, %r14
je l2
movq 0(%r12), %r15
movq %r15, 0(%r13)
movq $8, %r15
addq %r15, %r12
addq %r15, %r13
movq $1, %r15
subq %r15, %r14
jmp l1
.globl l2
l2: ## done with Object.copy loop
popq %r13
.globl Object.copy.end
Object.copy.end: ## method body ends
## return address handling
movq %rbp, %rsp
popq %rbp
ret
## ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
.globl Object.type_name
Object.type_name: ## method definition
pushq %rbp
movq %rsp, %rbp
movq 16(%rbp), %r12
## stack room for temporaries: 1
movq $8, %r14
subq %r14, %rsp
## return address handling
## method body begins
## new String
pushq %rbp
pushq %r12
movq $String..new, %r14
call *%r14
popq %r12
popq %rbp
## obtain vtable for self object
movq 16(%r12), %r14
## look up type name at offset 0 in vtable
movq 0(%r14), %r14
movq %r14, 24(%r13)
.globl Object.type_name.end
Object.type_name.end: ## method body ends
## return address handling
movq %rbp, %rsp
popq %rbp
ret
## ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
.globl IO.in_int
IO.in_int: ## method definition
pushq %rbp
movq %rsp, %rbp
movq 16(%rbp), %r12
## stack room for temporaries: 1
movq $8, %r14
subq %r14, %rsp
## return address handling
## method body begins
## new Int
pushq %rbp
pushq %r12
movq $Int..new, %r14
call *%r14
popq %r12
popq %rbp
movq %r13, %r14
movl $1, %esi
movl $4096, %edi
call calloc
pushq %rax
movq %rax, %rdi
movq $4096, %rsi
movq stdin(%rip), %rdx
call fgets
popq %rdi
movl $0, %eax
pushq %rax
movq %rsp, %rdx
movq $percent.ld, %rsi
call sscanf
popq %rax
movq $0, %rsi
cmpq $2147483647, %rax
cmovg %rsi, %rax
cmpq $-2147483648, %rax
cmovl %rsi, %rax
movq %rax, %r13
movq %r13, 24(%r14)
movq %r14, %r13
.globl IO.in_int.end
IO.in_int.end: ## method body ends
## return address handling
movq %rbp, %rsp
popq %rbp
ret
## ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
.globl IO.in_string
IO.in_string: ## method definition
pushq %rbp
movq %rsp, %rbp
movq 16(%rbp), %r12
## stack room for temporaries: 1
movq $8, %r14
subq %r14, %rsp
## return address handling
## method body begins
## new String
pushq %rbp
pushq %r12
movq $String..new, %r14
call *%r14
popq %r12
popq %rbp
movq %r13, %r14
call coolgetstr
movq %rax, %r13
movq %r13, 24(%r14)
movq %r14, %r13
.globl IO.in_string.end
IO.in_string.end: ## method body ends
## return address handling
movq %rbp, %rsp
popq %rbp
ret
## ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
.globl IO.out_int
IO.out_int: ## method definition
pushq %rbp
movq %rsp, %rbp
movq 16(%rbp), %r12
## stack room for temporaries: 1
movq $8, %r14
subq %r14, %rsp
## return address handling
## fp[3] holds argument x (Int)
## method body begins
movq 24(%rbp), %r14
movq 24(%r14), %r13
movq $percent.d, %rdi
movl %r13d, %eax
cdqe
movq %rax, %rsi
movl $0, %eax
call printf
movq %r12, %r13
.globl IO.out_int.end
IO.out_int.end: ## method body ends
## return address handling
movq %rbp, %rsp
popq %rbp
ret
## ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
.globl IO.out_string
IO.out_string: ## method definition
pushq %rbp
movq %rsp, %rbp
movq 16(%rbp), %r12
## stack room for temporaries: 1
movq $8, %r14
subq %r14, %rsp
## return address handling
## fp[3] holds argument x (String)
## method body begins
movq 24(%rbp), %r14
movq 24(%r14), %r13
movq %r13, %rdi
call cooloutstr
movq %r12, %r13
.globl IO.out_string.end
IO.out_string.end: ## method body ends
## return address handling
movq %rbp, %rsp
popq %rbp
ret
## ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
.globl Main.main
Main.main: ## method definition
pushq %rbp
movq %rsp, %rbp
movq 16(%rbp), %r12
## stack room for temporaries: 1
movq $8, %r14
subq %r14, %rsp
## return address handling
## method body begins
## out_string(...)
pushq %r12
pushq %rbp
## new String
pushq %rbp
pushq %r12
movq $String..new, %r14
call *%r14
popq %r12
popq %rbp
## string8 holds "Hello, world!\n"
movq $string8, %r14
movq %r14, 24(%r13)
pushq %r13
pushq %r12
## obtain vtable for self object of type Main
movq 16(%r12), %r14
## look up out_string() at offset 8 in vtable
movq 64(%r14), %r14
call *%r14
addq $16, %rsp
popq %rbp
popq %r12
## out_int(...)
pushq %r12
pushq %rbp
## new Int
pushq %rbp
pushq %r12
movq $Int..new, %r14
call *%r14
popq %r12
popq %rbp
movq $2, %r14
movq %r14, 24(%r13)
pushq %r13
pushq %r12
## obtain vtable for self object of type Main
movq 16(%r12), %r14
## look up out_int() at offset 7 in vtable
movq 56(%r14), %r14
call *%r14
addq $16, %rsp
popq %rbp
popq %r12
.globl Main.main.end
Main.main.end: ## method body ends
## return address handling
movq %rbp, %rsp
popq %rbp
ret
## ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
.globl String.concat
String.concat: ## method definition
pushq %rbp
movq %rsp, %rbp
movq 16(%rbp), %r12
## stack room for temporaries: 1
movq $8, %r14
subq %r14, %rsp
## return address handling
## fp[3] holds argument s (String)
## method body begins
## new String
pushq %rbp
pushq %r12
movq $String..new, %r14
call *%r14
popq %r12
popq %rbp
movq %r13, %r15
movq 24(%rbp), %r14
movq 24(%r14), %r14
movq 24(%r12), %r13
movq %r13, %rdi
movq %r14, %rsi
call coolstrcat
movq %rax, %r13
movq %r13, 24(%r15)
movq %r15, %r13
.globl String.concat.end
String.concat.end: ## method body ends
## return address handling
movq %rbp, %rsp
popq %rbp
ret
## ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
.globl String.length
String.length: ## method definition
pushq %rbp
movq %rsp, %rbp
movq 16(%rbp), %r12
## stack room for temporaries: 1
movq $8, %r14
subq %r14, %rsp
## return address handling
## method body begins
## new Int
pushq %rbp
pushq %r12
movq $Int..new, %r14
call *%r14
popq %r12
popq %rbp
movq %r13, %r14
movq 24(%r12), %r13
movq %r13, %rdi
movl $0, %eax
call coolstrlen
movq %rax, %r13
movq %r13, 24(%r14)
movq %r14, %r13
.globl String.length.end
String.length.end: ## method body ends
## return address handling
movq %rbp, %rsp
popq %rbp
ret
## ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
.globl String.substr
String.substr: ## method definition
pushq %rbp
movq %rsp, %rbp
movq 16(%rbp), %r12
## stack room for temporaries: 1
movq $8, %r14
subq %r14, %rsp
## return address handling
## fp[4] holds argument i (Int)
## fp[3] holds argument l (Int)
## method body begins
## new String
pushq %rbp
pushq %r12
movq $String..new, %r14
call *%r14
popq %r12
popq %rbp
movq %r13, %r15
movq 24(%rbp), %r14
movq 24(%r14), %r14
movq 32(%rbp), %r13
movq 24(%r13), %r13
movq 24(%r12), %r12
movq %r12, %rdi
movq %r13, %rsi
movq %r14, %rdx
call coolsubstr
movq %rax, %r13
cmpq $0, %r13
jne l3
movq $string9, %r13
movq %r13, %rdi
call cooloutstr
movl $0, %edi
call exit
.globl l3
l3: movq %r13, 24(%r15)
movq %r15, %r13
.globl String.substr.end
String.substr.end: ## method body ends
## return address handling
movq %rbp, %rsp
popq %rbp
ret
## ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
## global string constants
.globl the.empty.string
the.empty.string: # ""
.byte 0
.globl percent.d
percent.d: # "%ld"
.byte 37 # '%'
.byte 108 # 'l'
.byte 100 # 'd'
.byte 0
.globl percent.ld
percent.ld: # " %ld"
.byte 32 # ' '
.byte 37 # '%'
.byte 108 # 'l'
.byte 100 # 'd'
.byte 0
.globl string1
string1: # "Bool"
.byte 66 # 'B'
.byte 111 # 'o'
.byte 111 # 'o'
.byte 108 # 'l'
.byte 0
.globl string2
string2: # "IO"
.byte 73 # 'I'
.byte 79 # 'O'
.byte 0
.globl string3
string3: # "Int"
.byte 73 # 'I'
.byte 110 # 'n'
.byte 116 # 't'
.byte 0
.globl string4
string4: # "Main"
.byte 77 # 'M'
.byte 97 # 'a'
.byte 105 # 'i'
.byte 110 # 'n'
.byte 0
.globl string5
string5: # "Object"
.byte 79 # 'O'
.byte 98 # 'b'
.byte 106 # 'j'
.byte 101 # 'e'
.byte 99 # 'c'
.byte 116 # 't'
.byte 0
.globl string6
string6: # "String"
.byte 83 # 'S'
.byte 116 # 't'
.byte 114 # 'r'
.byte 105 # 'i'
.byte 110 # 'n'
.byte 103 # 'g'
.byte 0
.globl string7
string7: # "abort\\n"
.byte 97 # 'a'
.byte 98 # 'b'
.byte 111 # 'o'
.byte 114 # 'r'
.byte 116 # 't'
.byte 92 # '\\'
.byte 110 # 'n'
.byte 0
.globl string8
string8: # "Hello, world!\\n"
.byte 72 # 'H'
.byte 101 # 'e'
.byte 108 # 'l'
.byte 108 # 'l'
.byte 111 # 'o'
.byte 44 # ','
.byte 32 # ' '
.byte 119 # 'w'
.byte 111 # 'o'
.byte 114 # 'r'
.byte 108 # 'l'
.byte 100 # 'd'
.byte 33 # '!'
.byte 92 # '\\'
.byte 110 # 'n'
.byte 0
.globl string9
string9: # "ERROR: 0: Exception: String.substr out of range\\n"
.byte 69 # 'E'
.byte 82 # 'R'
.byte 82 # 'R'
.byte 79 # 'O'
.byte 82 # 'R'
.byte 58 # ':'
.byte 32 # ' '
.byte 48 # '0'
.byte 58 # ':'
.byte 32 # ' '
.byte 69 # 'E'
.byte 120 # 'x'
.byte 99 # 'c'
.byte 101 # 'e'
.byte 112 # 'p'
.byte 116 # 't'
.byte 105 # 'i'
.byte 111 # 'o'
.byte 110 # 'n'
.byte 58 # ':'
.byte 32 # ' '
.byte 83 # 'S'
.byte 116 # 't'
.byte 114 # 'r'
.byte 105 # 'i'
.byte 110 # 'n'
.byte 103 # 'g'
.byte 46 # '.'
.byte 115 # 's'
.byte 117 # 'u'
.byte 98 # 'b'
.byte 115 # 's'
.byte 116 # 't'
.byte 114 # 'r'
.byte 32 # ' '
.byte 111 # 'o'
.byte 117 # 'u'
.byte 116 # 't'
.byte 32 # ' '
.byte 111 # 'o'
.byte 102 # 'f'
.byte 32 # ' '
.byte 114 # 'r'
.byte 97 # 'a'
.byte 110 # 'n'
.byte 103 # 'g'
.byte 101 # 'e'
.byte 92 # '\\'
.byte 110 # 'n'
.byte 0
## ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
.globl eq_handler
eq_handler: ## helper function for =
pushq %rbp
movq %rsp, %rbp
movq 32(%rbp), %r12
## return address handling
movq 32(%rbp), %r13
movq 24(%rbp), %r14
cmpq %r14, %r13
je eq_true
movq $0, %r15
cmpq %r15, %r13
je eq_false
cmpq %r15, %r14
je eq_false
movq 0(%r13), %r13
movq 0(%r14), %r14
## place the sum of the type tags in r1
addq %r14, %r13
movq $0, %r14
cmpq %r14, %r13
je eq_bool
movq $2, %r14
cmpq %r14, %r13
je eq_int
movq $6, %r14
cmpq %r14, %r13
je eq_string
## otherwise, use pointer comparison
movq 32(%rbp), %r13
movq 24(%rbp), %r14
cmpq %r14, %r13
je eq_true
.globl eq_false
eq_false: ## not equal
## new Bool
pushq %rbp
pushq %r12
movq $Bool..new, %r14
call *%r14
popq %r12
popq %rbp
jmp eq_end
.globl eq_true
eq_true: ## equal
## new Bool
pushq %rbp
pushq %r12
movq $Bool..new, %r14
call *%r14
popq %r12
popq %rbp
movq $1, %r14
movq %r14, 24(%r13)
jmp eq_end
.globl eq_bool
eq_bool: ## two Bools
.globl eq_int
eq_int: ## two Ints
movq 32(%rbp), %r13
movq 24(%rbp), %r14
movq 24(%r13), %r13
movq 24(%r14), %r14
cmpq %r14, %r13
je eq_true
jmp eq_false
.globl eq_string
eq_string: ## two Strings
movq 32(%rbp), %r13
movq 24(%rbp), %r14
movq 24(%r13), %r13
movq 24(%r14), %r14
movq %r13, %rdi
movq %r14, %rsi
call strcmp
cmp $0, %eax
je eq_true
jmp eq_false
.globl eq_end
eq_end: ## return address handling
movq %rbp, %rsp
popq %rbp
ret
## ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
.globl le_handler
le_handler: ## helper function for <=
pushq %rbp
movq %rsp, %rbp
movq 32(%rbp), %r12
## return address handling
movq 32(%rbp), %r13
movq 24(%rbp), %r14
cmpq %r14, %r13
je le_true
movq $0, %r15
cmpq %r15, %r13
je le_false
cmpq %r15, %r14
je le_false
movq 0(%r13), %r13
movq 0(%r14), %r14
## place the sum of the type tags in r1
addq %r14, %r13
movq $0, %r14
cmpq %r14, %r13
je le_bool
movq $2, %r14
cmpq %r14, %r13
je le_int
movq $6, %r14
cmpq %r14, %r13
je le_string
## for non-primitives, equality is our only hope
movq 32(%rbp), %r13
movq 24(%rbp), %r14
cmpq %r14, %r13
je le_true
.globl le_false
le_false: ## not less-than-or-equal
## new Bool
pushq %rbp
pushq %r12
movq $Bool..new, %r14
call *%r14
popq %r12
popq %rbp
jmp le_end
.globl le_true
le_true: ## less-than-or-equal
## new Bool
pushq %rbp
pushq %r12
movq $Bool..new, %r14
call *%r14
popq %r12
popq %rbp
movq $1, %r14
movq %r14, 24(%r13)
jmp le_end
.globl le_bool
le_bool: ## two Bools
.globl le_int
le_int: ## two Ints
movq 32(%rbp), %r13
movq 24(%rbp), %r14
movq 24(%r13), %r13
movq 24(%r14), %r14
cmpl %r14d, %r13d
jle le_true
jmp le_false
.globl le_string
le_string: ## two Strings
movq 32(%rbp), %r13
movq 24(%rbp), %r14
movq 24(%r13), %r13
movq 24(%r14), %r14
movq %r13, %rdi
movq %r14, %rsi
call strcmp
cmp $0, %eax
jle le_true
jmp le_false
.globl le_end
le_end: ## return address handling
movq %rbp, %rsp
popq %rbp
ret
## ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
.globl lt_handler
lt_handler: ## helper function for <
pushq %rbp
movq %rsp, %rbp
movq 32(%rbp), %r12
## return address handling
movq 32(%rbp), %r13
movq 24(%rbp), %r14
movq $0, %r15
cmpq %r15, %r13
je lt_false
cmpq %r15, %r14
je lt_false
movq 0(%r13), %r13
movq 0(%r14), %r14
## place the sum of the type tags in r1
addq %r14, %r13
movq $0, %r14
cmpq %r14, %r13
je lt_bool
movq $2, %r14
cmpq %r14, %r13
je lt_int
movq $6, %r14
cmpq %r14, %r13
je lt_string
## for non-primitives, < is always false
.globl lt_false
lt_false: ## not less than
## new Bool
pushq %rbp
pushq %r12
movq $Bool..new, %r14
call *%r14
popq %r12
popq %rbp
jmp lt_end
.globl lt_true
lt_true: ## less than
## new Bool
pushq %rbp
pushq %r12
movq $Bool..new, %r14
call *%r14
popq %r12
popq %rbp
movq $1, %r14
movq %r14, 24(%r13)
jmp lt_end
.globl lt_bool
lt_bool: ## two Bools
.globl lt_int
lt_int: ## two Ints
movq 32(%rbp), %r13