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1199 lines
53 KiB
1199 lines
53 KiB
.equiv @sbrk, 9
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.equiv @print_string, 4
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.equiv @print_char, 11
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.equiv @print_int, 1
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.equiv @exit2, 17
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.equiv @read_string, 8
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.equiv @fill_line_buffer, 18
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.equiv @.__obj_size__, 4
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.equiv @.__len__, 12
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.equiv @.__int__, 12
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.equiv @.__bool__, 12
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.equiv @.__str__, 16
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.equiv @.__elts__, 16
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.equiv @error_div_zero, 2
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.equiv @error_arg, 1
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.equiv @error_oob, 3
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.equiv @error_none, 4
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.equiv @error_oom, 5
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.equiv @error_nyi, 6
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.equiv @listHeaderWords, 4
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.equiv @strHeaderWords, 4
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.equiv @bool.True, const_1
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.equiv @bool.False, const_0
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.data
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.globl $object$prototype
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$object$prototype:
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.word 0 # Type tag for class: object
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.word 3 # Object size
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.word $object$dispatchTable # Pointer to dispatch table
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.align 2
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.globl $int$prototype
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$int$prototype:
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.word 1 # Type tag for class: int
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.word 4 # Object size
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.word $int$dispatchTable # Pointer to dispatch table
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.word 0 # Initial value of attribute: __int__
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.align 2
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.globl $bool$prototype
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$bool$prototype:
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.word 2 # Type tag for class: bool
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.word 4 # Object size
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.word $bool$dispatchTable # Pointer to dispatch table
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.word 0 # Initial value of attribute: __bool__
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.align 2
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.globl $str$prototype
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$str$prototype:
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.word 3 # Type tag for class: str
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.word 5 # Object size
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.word $str$dispatchTable # Pointer to dispatch table
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.word 0 # Initial value of attribute: __len__
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.word 0 # Initial value of attribute: __str__
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.align 2
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.globl $.list$prototype
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$.list$prototype:
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.word -1 # Type tag for class: .list
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.word 4 # Object size
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.word 0 # Pointer to dispatch table
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.word 0 # Initial value of attribute: __len__
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.align 2
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.globl $object$dispatchTable
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$object$dispatchTable:
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.word $object.__init__ # Implementation for method: object.__init__
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.globl $int$dispatchTable
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$int$dispatchTable:
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.word $object.__init__ # Implementation for method: int.__init__
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.globl $bool$dispatchTable
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$bool$dispatchTable:
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.word $object.__init__ # Implementation for method: bool.__init__
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.globl $str$dispatchTable
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$str$dispatchTable:
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.word $object.__init__ # Implementation for method: str.__init__
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.globl $c
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$c:
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.word 42 # Initial value of global var: c
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.globl $n
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$n:
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.word 10 # Initial value of global var: n
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.globl $s
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$s:
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.word const_2 # Initial value of global var: s
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.globl $i
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$i:
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.word 0 # Initial value of global var: i
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.text
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.globl main
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main:
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lui a0, 8192 # Initialize heap size (in multiples of 4KB)
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add s11, s11, a0 # Save heap size
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jal heap.init # Call heap.init routine
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mv gp, a0 # Initialize heap pointer
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mv s10, gp # Set beginning of heap
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add s11, s10, s11 # Set end of heap (= start of heap + heap size)
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mv ra, zero # No normal return from main program.
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mv fp, zero # No preceding frame.
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addi sp, sp, -@..main.size # Reserve space for stack frame.
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sw ra, @..main.size-4(sp) # return address
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sw fp, @..main.size-8(sp) # control link
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addi fp, sp, @..main.size # New fp is at old SP.
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jal initchars # Initialize one-character strings.
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lw a0, $n # Load global: n
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sub a0, zero, a0 # Unary negation
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sw a0, -12(fp) # Push on stack slot 3
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lw a0, $c # Load global: c
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lw t0, -12(fp) # Pop stack slot 3
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mul a0, t0, a0 # Operator *
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sw a0, $i, t0 # Assign global: i (using tmp register)
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j label_2 # Jump to loop test
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label_1: # Top of while loop
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lw a0, $i # Load global: i
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sw a0, -16(fp) # Push argument 0 from last.
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addi sp, fp, -16 # Set SP to last argument.
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jal $int_to_str # Invoke function: int_to_str
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addi sp, fp, -@..main.size # Set SP to stack frame top.
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sw a0, $s, t0 # Assign global: s (using tmp register)
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lw a0, $s # Load global: s
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sw a0, -16(fp) # Push argument 0 from last.
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addi sp, fp, -16 # Set SP to last argument.
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jal $print # Invoke function: print
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addi sp, fp, -@..main.size # Set SP to stack frame top.
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lw a0, $s # Load global: s
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sw a0, -16(fp) # Push argument 0 from last.
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addi sp, fp, -16 # Set SP to last argument.
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jal $str_to_int # Invoke function: str_to_int
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addi sp, fp, -@..main.size # Set SP to stack frame top.
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sw a0, -12(fp) # Push on stack slot 3
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lw a0, $c # Load global: c
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lw t0, -12(fp) # Pop stack slot 3
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add a0, t0, a0 # Operator +
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sw a0, $i, t0 # Assign global: i (using tmp register)
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label_2: # Test loop condition
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lw a0, $i # Load global: i
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sw a0, -12(fp) # Push on stack slot 3
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lw a0, $n # Load global: n
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sw a0, -16(fp) # Push on stack slot 4
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lw a0, $c # Load global: c
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lw t0, -16(fp) # Pop stack slot 4
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mul a0, t0, a0 # Operator *
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lw t0, -12(fp) # Pop stack slot 3
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bge a0, t0, label_1 # Branch on <=
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.equiv @..main.size, 16
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label_0: # End of program
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li a0, 10 # Code for ecall: exit
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ecall
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.globl $object.__init__
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$object.__init__:
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# Init method for type object.
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mv a0, zero # `None` constant
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jr ra # Return
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.globl $print
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$print:
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# Function print
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lw a0, 0(sp) # Load arg
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beq a0, zero, print_6 # None is an illegal argument
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lw t0, 0(a0) # Get type tag of arg
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li t1, 1 # Load type tag of `int`
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beq t0, t1, print_7 # Go to print(int)
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li t1, 3 # Load type tag of `str`
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beq t0, t1, print_8 # Go to print(str)
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li t1, 2 # Load type tag of `bool`
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beq t0, t1, print_9 # Go to print(bool)
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print_6: # Invalid argument
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li a0, 1 # Exit code for: Invalid argument
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la a1, const_3 # Load error message as str
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addi a1, a1, @.__str__ # Load address of attribute __str__
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j abort # Abort
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# Printing bools
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print_9: # Print bool object in A0
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lw a0, @.__bool__(a0) # Load attribute __bool__
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beq a0, zero, print_10 # Go to: print(False)
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la a0, const_4 # String representation: True
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j print_8 # Go to: print(str)
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print_10: # Print False object in A0
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la a0, const_5 # String representation: False
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j print_8 # Go to: print(str)
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# Printing strs.
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print_8: # Print str object in A0
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addi a1, a0, @.__str__ # Load address of attribute __str__
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j print_11 # Print the null-terminated string is now in A1
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mv a0, zero # Load None
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j print_5 # Go to return
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print_11: # Print null-terminated string in A1
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li a0, @print_string # Code for ecall: print_string
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ecall # Print string
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li a1, 10 # Load newline character
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li a0, @print_char # Code for ecall: print_char
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ecall # Print character
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j print_5 # Go to return
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# Printing ints.
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print_7: # Print int object in A0
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lw a1, @.__int__(a0) # Load attribute __int__
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li a0, @print_int # Code for ecall: print_int
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ecall # Print integer
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li a1, 10 # Load newline character
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li a0, 11 # Code for ecall: print_char
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ecall # Print character
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print_5: # End of function
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mv a0, zero # Load None
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jr ra # Return to caller
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.globl $len
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$len:
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# Function len
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# We do not save/restore fp/ra for this function
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# because we know that it does not use the stack or does not
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# call other functions.
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lw a0, 0(sp) # Load arg
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beq a0, zero, len_12 # None is an illegal argument
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lw t0, 0(a0) # Get type tag of arg
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li t1, 3 # Load type tag of `str`
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beq t0, t1, len_13 # Go to len(str)
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li t1, -1 # Load type tag for list objects
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beq t0, t1, len_13 # Go to len(list)
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len_12: # Invalid argument
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li a0, @error_arg # Exit code for: Invalid argument
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la a1, const_3 # Load error message as str
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addi a1, a1, @.__str__ # Load address of attribute __str__
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j abort # Abort
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len_13: # Get length of string
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lw a0, @.__len__(a0) # Load attribute: __len__
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jr ra # Return to caller
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.globl $input
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$input:
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# Function input
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addi sp, sp, -16 # Reserve stack
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sw ra, 12(sp) # Save registers
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sw fp, 8(sp)
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sw s1, 4(sp)
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addi fp, sp, 16 # Set fp
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li a0, @fill_line_buffer # Fill the internal line buffer.
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ecall
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bgez a0, input_nonempty # More input found
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la a0, $str$prototype # EOF: Return empty string.
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j input_done
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input_nonempty:
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mv s1, a0
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addi t0, s1, 5 # Compute bytes for string (+NL+NUL),
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addi t0, t0, @.__str__ # Including header.
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srli a1, t0, 2 # Convert to words.
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la a0, $str$prototype # Load address of string prototype.
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jal ra, alloc2 # Allocate string.
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sw s1, @.__len__(a0) # Store string length.
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mv a2, s1 # Pass length.
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mv s1, a0 # Save string object address.
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addi a1, a0, @.__str__ # Pass address of string data.
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li a0, @read_string # ecall to read from internal buffer.
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ecall
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addi a0, a0, 1 # Actual length (including NL).
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sw a0, @.__len__(s1) # Store actual length.
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add t0, a0, s1
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li t1, 10 # Store newline and null byte
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sb t1, @.__str__-1(t0)
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sb zero, @.__str__(t0) # Store null byte at end.
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mv a0, s1 # Return string object.
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input_done:
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lw s1, -12(fp)
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lw ra, -4(fp)
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lw fp, -8(fp)
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addi sp, sp, 16
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jr ra
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.globl $int_to_str
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$int_to_str:
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addi sp, sp, -@int_to_str.size # Reserve space for stack frame.
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sw ra, @int_to_str.size-4(sp) # return address
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sw fp, @int_to_str.size-8(sp) # control link
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addi fp, sp, @int_to_str.size # New fp is at old SP.
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mv a0, zero # Load None
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sw a0, -12(fp) # local variable digits
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la a0, const_2 # Load string literal
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sw a0, -16(fp) # local variable result
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la a0, const_6 # Load string literal
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sw a0, -24(fp) # Push argument 10 from last.
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la a0, const_7 # Load string literal
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sw a0, -28(fp) # Push argument 9 from last.
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la a0, const_8 # Load string literal
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sw a0, -32(fp) # Push argument 8 from last.
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la a0, const_9 # Load string literal
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sw a0, -36(fp) # Push argument 7 from last.
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la a0, const_10 # Load string literal
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sw a0, -40(fp) # Push argument 6 from last.
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la a0, const_11 # Load string literal
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sw a0, -44(fp) # Push argument 5 from last.
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la a0, const_12 # Load string literal
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sw a0, -48(fp) # Push argument 4 from last.
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la a0, const_13 # Load string literal
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sw a0, -52(fp) # Push argument 3 from last.
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la a0, const_14 # Load string literal
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sw a0, -56(fp) # Push argument 2 from last.
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la a0, const_15 # Load string literal
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sw a0, -60(fp) # Push argument 1 from last.
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li a0, 10 # Pass list length
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sw a0, -64(fp) # Push argument 0 from last.
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addi sp, fp, -64 # Set SP to last argument.
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jal conslist # Move values to new list object
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addi sp, fp, -@int_to_str.size # Set SP to stack frame top.
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sw a0, -12(fp) # Assign var: int_to_str.digits
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lw a0, 0(fp) # Load var: int_to_str.x
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sw a0, -20(fp) # Push on stack slot 5
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li a0, 0 # Load integer literal 0
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lw t0, -20(fp) # Pop stack slot 5
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bge t0, a0, label_5 # Branch on not <
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la a0, const_16 # Load string literal
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sw a0, -16(fp) # Assign var: int_to_str.result
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lw a0, 0(fp) # Load var: int_to_str.x
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sub a0, zero, a0 # Unary negation
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sw a0, 0(fp) # Assign var: int_to_str.x
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label_5: # End of if-else statement
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lw a0, 0(fp) # Load var: int_to_str.x
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sw a0, -20(fp) # Push on stack slot 5
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li a0, 10 # Load integer literal 10
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lw t0, -20(fp) # Pop stack slot 5
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blt t0, a0, label_6 # Branch on not >=
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lw a0, -16(fp) # Load var: int_to_str.result
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sw a0, -28(fp) # Push argument 1 from last.
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lw a0, 0(fp) # Load var: int_to_str.x
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sw a0, -52(fp) # Push on stack slot 13
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li a0, 10 # Load integer literal 10
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lw t0, -52(fp) # Pop stack slot 13
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bnez a0, label_7 # Ensure non-zero divisor
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j error.Div # Go to error handler
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label_7: # Divisor is non-zero
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xor t2, t0, a0 # Check for same sign
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bltz t2, label_9 # If !=, need to adjust left operand
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div a0, t0, a0 # Operator //
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j label_8
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label_9: # Operands have differing signs
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slt t2, zero, a0 # tmp = 1 if right > 0 else 0
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add t2, t2, t2 # tmp *= 2
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addi t2, t2, -1 # tmp = 1 if right>=0 else -1
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add t2, t0, t2 # Adjust left operand
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div t2, t2, a0 # Adjusted division, toward 0
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addi a0, t2, -1 # Complete division when signs !=
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label_8: # End of //
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sw a0, -48(fp) # Push argument 0 from last.
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addi sp, fp, -48 # Set SP to last argument.
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jal $int_to_str # Invoke function: int_to_str
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addi sp, fp, -@int_to_str.size # Set SP to stack frame top.
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sw a0, -32(fp) # Push argument 0 from last.
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addi sp, fp, -32 # Set SP to last argument.
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|
jal strcat # Call string concatenation function
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|
addi sp, fp, -@int_to_str.size # Set SP to stack frame top.
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|
sw a0, -16(fp) # Assign var: int_to_str.result
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label_6: # End of if-else statement
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|
lw a0, -16(fp) # Load var: int_to_str.result
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|
sw a0, -28(fp) # Push argument 1 from last.
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|
lw a0, -12(fp) # Load var: int_to_str.digits
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|
sw a0, -36(fp) # Push on stack slot 9
|
|
lw a0, 0(fp) # Load var: int_to_str.x
|
|
sw a0, -40(fp) # Push on stack slot 10
|
|
li a0, 10 # Load integer literal 10
|
|
lw t0, -40(fp) # Pop stack slot 10
|
|
bnez a0, label_10 # Ensure non-zero divisor
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|
j error.Div # Go to error handler
|
|
label_10: # Divisor is non-zero
|
|
rem t2, t0, a0 # Operator rem
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|
beqz t2, label_11 # If no remainder, no adjustment
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xor t3, t2, a0 # Check for differing signs.
|
|
bgez t3, label_11 # Don't adjust if signs equal.
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add a0, t2, a0 # Adjust
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|
j label_12
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|
label_11: # Store result
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|
mv a0, t2
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|
label_12: # End of %
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|
lw a1, -36(fp) # Pop stack slot 9
|
|
bnez a1, label_13 # Ensure not None
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|
j error.None # Go to error handler
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|
label_13: # Not None
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|
lw t0, 12(a1) # Load attribute: __len__
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|
bltu a0, t0, label_14 # Ensure 0 <= index < len
|
|
j error.OOB # Go to error handler
|
|
label_14: # Index within bounds
|
|
addi a0, a0, 4 # Compute list element offset in words
|
|
li t0, 4 # Word size in bytes
|
|
mul a0, a0, t0 # Compute list element offset in bytes
|
|
add a0, a1, a0 # Pointer to list element
|
|
lw a0, 0(a0) # Get list element
|
|
sw a0, -32(fp) # Push argument 0 from last.
|
|
addi sp, fp, -32 # Set SP to last argument.
|
|
jal strcat # Call string concatenation function
|
|
addi sp, fp, -@int_to_str.size # Set SP to stack frame top.
|
|
sw a0, -16(fp) # Assign var: int_to_str.result
|
|
lw a0, -16(fp) # Load var: int_to_str.result
|
|
j label_4 # Go to return
|
|
mv a0, zero # Load None
|
|
j label_4 # Jump to function epilogue
|
|
label_4: # Epilogue
|
|
.equiv @int_to_str.size, 64
|
|
lw ra, -4(fp) # Get return address
|
|
lw fp, -8(fp) # Use control link to restore caller's fp
|
|
addi sp, sp, @int_to_str.size # Restore stack pointer
|
|
jr ra # Return to caller
|
|
|
|
.globl $str_to_int
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|
$str_to_int:
|
|
addi sp, sp, -@str_to_int.size # Reserve space for stack frame.
|
|
sw ra, @str_to_int.size-4(sp) # return address
|
|
sw fp, @str_to_int.size-8(sp) # control link
|
|
addi fp, sp, @str_to_int.size # New fp is at old SP.
|
|
li a0, 0 # Load integer literal 0
|
|
sw a0, -12(fp) # local variable result
|
|
li a0, 0 # Load integer literal 0
|
|
sw a0, -16(fp) # local variable digit
|
|
la a0, const_2 # Load string literal
|
|
sw a0, -20(fp) # local variable char
|
|
li a0, 1 # Load integer literal 1
|
|
sw a0, -24(fp) # local variable sign
|
|
li a0, 1 # Load boolean literal: true
|
|
sw a0, -28(fp) # local variable first_char
|
|
lw a0, 0(fp) # Load var: str_to_int.x
|
|
sw a0, -32(fp) # Push on stack slot 8
|
|
mv t1, zero # Initialize for-loop index
|
|
sw t1, -36(fp) # Push on stack slot 9
|
|
label_17: # for-loop header
|
|
lw t1, -36(fp) # Peek stack slot 8
|
|
lw t0, -32(fp) # Peek stack slot 7
|
|
lw t2, 12(t0) # Get attribute __len__
|
|
bgeu t1, t2, label_18 # Exit loop if idx >= len(iter)
|
|
lw t0, -36(fp) # Pop stack slot 9
|
|
lw a1, -32(fp) # Peek stack slot 7
|
|
addi t1, t0, 1 # Increment index for next iteration
|
|
sw t1, -36(fp) # Push on stack slot 9
|
|
addi t0, t0, 16 # Convert index to offset to char in bytes
|
|
add t0, a1, t0 # Get pointer to char
|
|
lbu t0, 0(t0) # Load character
|
|
li t1, 20
|
|
mul t0, t0, t1 # Multiply by size of string object
|
|
la a0, allChars # Index into single-char table
|
|
add a0, a0, t0
|
|
sw a0, -20(fp) # Assign var: str_to_int.char
|
|
lw a0, -20(fp) # Load var: str_to_int.char
|
|
sw a0, -44(fp) # Push argument 1 from last.
|
|
la a0, const_16 # Load string literal
|
|
sw a0, -48(fp) # Push argument 0 from last.
|
|
addi sp, fp, -48 # Set SP to last argument.
|
|
jal streql # Call string == function
|
|
addi sp, fp, -@str_to_int.size # Set SP to stack frame top.
|
|
beqz a0, label_20 # Branch on false.
|
|
lw a0, -28(fp) # Load var: str_to_int.first_char
|
|
bnez a0, label_21 # Branch on true.
|
|
li a0, 0 # Load integer literal 0
|
|
j label_16 # Go to return
|
|
label_21: # End of if-else statement
|
|
li a0, 1 # Load integer literal 1
|
|
sub a0, zero, a0 # Unary negation
|
|
sw a0, -24(fp) # Assign var: str_to_int.sign
|
|
j label_19 # Then body complete; jump to end-if
|
|
label_20: # Else body
|
|
lw a0, -20(fp) # Load var: str_to_int.char
|
|
sw a0, -44(fp) # Push argument 1 from last.
|
|
la a0, const_6 # Load string literal
|
|
sw a0, -48(fp) # Push argument 0 from last.
|
|
addi sp, fp, -48 # Set SP to last argument.
|
|
jal streql # Call string == function
|
|
addi sp, fp, -@str_to_int.size # Set SP to stack frame top.
|
|
beqz a0, label_23 # Branch on false.
|
|
li a0, 0 # Load integer literal 0
|
|
sw a0, -16(fp) # Assign var: str_to_int.digit
|
|
j label_22 # Then body complete; jump to end-if
|
|
label_23: # Else body
|
|
lw a0, -20(fp) # Load var: str_to_int.char
|
|
sw a0, -44(fp) # Push argument 1 from last.
|
|
la a0, const_7 # Load string literal
|
|
sw a0, -48(fp) # Push argument 0 from last.
|
|
addi sp, fp, -48 # Set SP to last argument.
|
|
jal streql # Call string == function
|
|
addi sp, fp, -@str_to_int.size # Set SP to stack frame top.
|
|
beqz a0, label_25 # Branch on false.
|
|
li a0, 1 # Load integer literal 1
|
|
sw a0, -16(fp) # Assign var: str_to_int.digit
|
|
j label_24 # Then body complete; jump to end-if
|
|
label_25: # Else body
|
|
lw a0, -20(fp) # Load var: str_to_int.char
|
|
sw a0, -44(fp) # Push argument 1 from last.
|
|
la a0, const_8 # Load string literal
|
|
sw a0, -48(fp) # Push argument 0 from last.
|
|
addi sp, fp, -48 # Set SP to last argument.
|
|
jal streql # Call string == function
|
|
addi sp, fp, -@str_to_int.size # Set SP to stack frame top.
|
|
beqz a0, label_27 # Branch on false.
|
|
li a0, 2 # Load integer literal 2
|
|
sw a0, -16(fp) # Assign var: str_to_int.digit
|
|
j label_26 # Then body complete; jump to end-if
|
|
label_27: # Else body
|
|
lw a0, -20(fp) # Load var: str_to_int.char
|
|
sw a0, -44(fp) # Push argument 1 from last.
|
|
la a0, const_9 # Load string literal
|
|
sw a0, -48(fp) # Push argument 0 from last.
|
|
addi sp, fp, -48 # Set SP to last argument.
|
|
jal streql # Call string == function
|
|
addi sp, fp, -@str_to_int.size # Set SP to stack frame top.
|
|
beqz a0, label_29 # Branch on false.
|
|
li a0, 3 # Load integer literal 3
|
|
sw a0, -16(fp) # Assign var: str_to_int.digit
|
|
j label_28 # Then body complete; jump to end-if
|
|
label_29: # Else body
|
|
lw a0, -20(fp) # Load var: str_to_int.char
|
|
sw a0, -44(fp) # Push argument 1 from last.
|
|
la a0, const_9 # Load string literal
|
|
sw a0, -48(fp) # Push argument 0 from last.
|
|
addi sp, fp, -48 # Set SP to last argument.
|
|
jal streql # Call string == function
|
|
addi sp, fp, -@str_to_int.size # Set SP to stack frame top.
|
|
beqz a0, label_31 # Branch on false.
|
|
li a0, 3 # Load integer literal 3
|
|
sw a0, -16(fp) # Assign var: str_to_int.digit
|
|
j label_30 # Then body complete; jump to end-if
|
|
label_31: # Else body
|
|
lw a0, -20(fp) # Load var: str_to_int.char
|
|
sw a0, -44(fp) # Push argument 1 from last.
|
|
la a0, const_10 # Load string literal
|
|
sw a0, -48(fp) # Push argument 0 from last.
|
|
addi sp, fp, -48 # Set SP to last argument.
|
|
jal streql # Call string == function
|
|
addi sp, fp, -@str_to_int.size # Set SP to stack frame top.
|
|
beqz a0, label_33 # Branch on false.
|
|
li a0, 4 # Load integer literal 4
|
|
sw a0, -16(fp) # Assign var: str_to_int.digit
|
|
j label_32 # Then body complete; jump to end-if
|
|
label_33: # Else body
|
|
lw a0, -20(fp) # Load var: str_to_int.char
|
|
sw a0, -44(fp) # Push argument 1 from last.
|
|
la a0, const_11 # Load string literal
|
|
sw a0, -48(fp) # Push argument 0 from last.
|
|
addi sp, fp, -48 # Set SP to last argument.
|
|
jal streql # Call string == function
|
|
addi sp, fp, -@str_to_int.size # Set SP to stack frame top.
|
|
beqz a0, label_35 # Branch on false.
|
|
li a0, 5 # Load integer literal 5
|
|
sw a0, -16(fp) # Assign var: str_to_int.digit
|
|
j label_34 # Then body complete; jump to end-if
|
|
label_35: # Else body
|
|
lw a0, -20(fp) # Load var: str_to_int.char
|
|
sw a0, -44(fp) # Push argument 1 from last.
|
|
la a0, const_12 # Load string literal
|
|
sw a0, -48(fp) # Push argument 0 from last.
|
|
addi sp, fp, -48 # Set SP to last argument.
|
|
jal streql # Call string == function
|
|
addi sp, fp, -@str_to_int.size # Set SP to stack frame top.
|
|
beqz a0, label_37 # Branch on false.
|
|
li a0, 6 # Load integer literal 6
|
|
sw a0, -16(fp) # Assign var: str_to_int.digit
|
|
j label_36 # Then body complete; jump to end-if
|
|
label_37: # Else body
|
|
lw a0, -20(fp) # Load var: str_to_int.char
|
|
sw a0, -44(fp) # Push argument 1 from last.
|
|
la a0, const_13 # Load string literal
|
|
sw a0, -48(fp) # Push argument 0 from last.
|
|
addi sp, fp, -48 # Set SP to last argument.
|
|
jal streql # Call string == function
|
|
addi sp, fp, -@str_to_int.size # Set SP to stack frame top.
|
|
beqz a0, label_39 # Branch on false.
|
|
li a0, 7 # Load integer literal 7
|
|
sw a0, -16(fp) # Assign var: str_to_int.digit
|
|
j label_38 # Then body complete; jump to end-if
|
|
label_39: # Else body
|
|
lw a0, -20(fp) # Load var: str_to_int.char
|
|
sw a0, -44(fp) # Push argument 1 from last.
|
|
la a0, const_14 # Load string literal
|
|
sw a0, -48(fp) # Push argument 0 from last.
|
|
addi sp, fp, -48 # Set SP to last argument.
|
|
jal streql # Call string == function
|
|
addi sp, fp, -@str_to_int.size # Set SP to stack frame top.
|
|
beqz a0, label_41 # Branch on false.
|
|
li a0, 8 # Load integer literal 8
|
|
sw a0, -16(fp) # Assign var: str_to_int.digit
|
|
j label_40 # Then body complete; jump to end-if
|
|
label_41: # Else body
|
|
lw a0, -20(fp) # Load var: str_to_int.char
|
|
sw a0, -44(fp) # Push argument 1 from last.
|
|
la a0, const_15 # Load string literal
|
|
sw a0, -48(fp) # Push argument 0 from last.
|
|
addi sp, fp, -48 # Set SP to last argument.
|
|
jal streql # Call string == function
|
|
addi sp, fp, -@str_to_int.size # Set SP to stack frame top.
|
|
beqz a0, label_43 # Branch on false.
|
|
li a0, 9 # Load integer literal 9
|
|
sw a0, -16(fp) # Assign var: str_to_int.digit
|
|
j label_42 # Then body complete; jump to end-if
|
|
label_43: # Else body
|
|
li a0, 0 # Load integer literal 0
|
|
j label_16 # Go to return
|
|
label_42: # End of if-else statement
|
|
label_40: # End of if-else statement
|
|
label_38: # End of if-else statement
|
|
label_36: # End of if-else statement
|
|
label_34: # End of if-else statement
|
|
label_32: # End of if-else statement
|
|
label_30: # End of if-else statement
|
|
label_28: # End of if-else statement
|
|
label_26: # End of if-else statement
|
|
label_24: # End of if-else statement
|
|
label_22: # End of if-else statement
|
|
label_19: # End of if-else statement
|
|
li a0, 0 # Load boolean literal: false
|
|
sw a0, -28(fp) # Assign var: str_to_int.first_char
|
|
lw a0, -12(fp) # Load var: str_to_int.result
|
|
sw a0, -40(fp) # Push on stack slot 10
|
|
li a0, 10 # Load integer literal 10
|
|
lw t0, -40(fp) # Pop stack slot 10
|
|
mul a0, t0, a0 # Operator *
|
|
sw a0, -40(fp) # Push on stack slot 10
|
|
lw a0, -16(fp) # Load var: str_to_int.digit
|
|
lw t0, -40(fp) # Pop stack slot 10
|
|
add a0, t0, a0 # Operator +
|
|
sw a0, -12(fp) # Assign var: str_to_int.result
|
|
j label_17 # Loop back to header
|
|
label_18: # for-loop footer
|
|
lw a0, -12(fp) # Load var: str_to_int.result
|
|
sw a0, -32(fp) # Push on stack slot 8
|
|
lw a0, -24(fp) # Load var: str_to_int.sign
|
|
lw t0, -32(fp) # Pop stack slot 8
|
|
mul a0, t0, a0 # Operator *
|
|
j label_16 # Go to return
|
|
mv a0, zero # Load None
|
|
j label_16 # Jump to function epilogue
|
|
label_16: # Epilogue
|
|
.equiv @str_to_int.size, 48
|
|
lw ra, -4(fp) # Get return address
|
|
lw fp, -8(fp) # Use control link to restore caller's fp
|
|
addi sp, sp, @str_to_int.size # Restore stack pointer
|
|
jr ra # Return to caller
|
|
|
|
.globl alloc
|
|
alloc:
|
|
# Runtime support function alloc.
|
|
# Prototype address is in a0.
|
|
lw a1, 4(a0) # Get size of object in words
|
|
j alloc2 # Allocate object with exact size
|
|
|
|
.globl alloc2
|
|
alloc2:
|
|
# Runtime support function alloc2 (realloc).
|
|
# Prototype address is in a0.
|
|
# Number of words to allocate is in a1.
|
|
li a2, 4 # Word size in bytes
|
|
mul a2, a1, a2 # Calculate number of bytes to allocate
|
|
add a2, gp, a2 # Estimate where GP will move
|
|
bgeu a2, s11, alloc2_15 # Go to OOM handler if too large
|
|
lw t0, @.__obj_size__(a0) # Get size of object in words
|
|
mv t2, a0 # Initialize src ptr
|
|
mv t3, gp # Initialize dest ptr
|
|
alloc2_16: # Copy-loop header
|
|
lw t1, 0(t2) # Load next word from src
|
|
sw t1, 0(t3) # Store next word to dest
|
|
addi t2, t2, 4 # Increment src
|
|
addi t3, t3, 4 # Increment dest
|
|
addi t0, t0, -1 # Decrement counter
|
|
bne t0, zero, alloc2_16 # Loop if more words left to copy
|
|
mv a0, gp # Save new object's address to return
|
|
sw a1, @.__obj_size__(a0) # Set size of new object in words
|
|
# (same as requested size)
|
|
mv gp, a2 # Set next free slot in the heap
|
|
jr ra # Return to caller
|
|
alloc2_15: # OOM handler
|
|
li a0, @error_oom # Exit code for: Out of memory
|
|
la a1, const_17 # Load error message as str
|
|
addi a1, a1, @.__str__ # Load address of attribute __str__
|
|
j abort # Abort
|
|
|
|
.globl abort
|
|
abort:
|
|
# Runtime support function abort (does not return).
|
|
mv t0, a0 # Save exit code in temp
|
|
li a0, @print_string # Code for print_string ecall
|
|
ecall # Print error message in a1
|
|
li a1, 10 # Load newline character
|
|
li a0, @print_char # Code for print_char ecall
|
|
ecall # Print newline
|
|
mv a1, t0 # Move exit code to a1
|
|
li a0, @exit2 # Code for exit2 ecall
|
|
ecall # Exit with code
|
|
abort_17: # Infinite loop
|
|
j abort_17 # Prevent fallthrough
|
|
|
|
.globl heap.init
|
|
heap.init:
|
|
# Runtime support function heap.init.
|
|
mv a1, a0 # Move requested size to A1
|
|
li a0, @sbrk # Code for ecall: sbrk
|
|
ecall # Request A1 bytes
|
|
jr ra # Return to caller
|
|
|
|
.globl concat
|
|
concat:
|
|
|
|
addi sp, sp, -32
|
|
sw ra, 28(sp)
|
|
sw fp, 24(sp)
|
|
addi fp, sp, 32
|
|
sw s1, -12(fp)
|
|
sw s2, -16(fp)
|
|
sw s3, -20(fp)
|
|
sw s4, -24(fp)
|
|
sw s5, -28(fp)
|
|
lw t0, 4(fp)
|
|
lw t1, 0(fp)
|
|
beqz t0, concat_none
|
|
beqz t1, concat_none
|
|
lw t0, @.__len__(t0)
|
|
lw t1, @.__len__(t1)
|
|
add s5, t0, t1
|
|
addi a1, s5, @listHeaderWords
|
|
la a0, $.list$prototype
|
|
jal alloc2
|
|
sw s5, @.__len__(a0)
|
|
mv s5, a0
|
|
addi s3, s5, @.__elts__
|
|
lw s1, 4(fp)
|
|
lw s2, @.__len__(s1)
|
|
addi s1, s1, @.__elts__
|
|
lw s4, 12(fp)
|
|
concat_1:
|
|
beqz s2, concat_2
|
|
lw a0, 0(s1)
|
|
jalr ra, s4, 0
|
|
sw a0, 0(s3)
|
|
addi s2, s2, -1
|
|
addi s1, s1, 4
|
|
addi s3, s3, 4
|
|
j concat_1
|
|
concat_2:
|
|
lw s1, 0(fp)
|
|
lw s2, @.__len__(s1)
|
|
addi s1, s1, @.__elts__
|
|
lw s4, 8(fp)
|
|
concat_3:
|
|
beqz s2, concat_4
|
|
lw a0, 0(s1)
|
|
jalr ra, s4, 0
|
|
sw a0, 0(s3)
|
|
addi s2, s2, -1
|
|
addi s1, s1, 4
|
|
addi s3, s3, 4
|
|
j concat_3
|
|
concat_4:
|
|
mv a0, s5
|
|
lw s1, -12(fp)
|
|
lw s2, -16(fp)
|
|
lw s3, -20(fp)
|
|
lw s4, -24(fp)
|
|
lw s5, -28(fp)
|
|
lw ra, -4(fp)
|
|
lw fp, -8(fp)
|
|
addi sp, sp, 32
|
|
jr ra
|
|
concat_none:
|
|
j error.None
|
|
|
|
|
|
.globl conslist
|
|
conslist:
|
|
|
|
addi sp, sp, -8
|
|
sw ra, 4(sp)
|
|
sw fp, 0(sp)
|
|
addi fp, sp, 8
|
|
lw a1, 0(fp)
|
|
la a0, $.list$prototype
|
|
beqz a1, conslist_done
|
|
addi a1, a1, @listHeaderWords
|
|
jal alloc2
|
|
lw t0, 0(fp)
|
|
sw t0, @.__len__(a0)
|
|
slli t1, t0, 2
|
|
add t1, t1, fp
|
|
addi t2, a0, @.__elts__
|
|
conslist_1:
|
|
lw t3, 0(t1)
|
|
sw t3, 0(t2)
|
|
addi t1, t1, -4
|
|
addi t2, t2, 4
|
|
addi t0, t0, -1
|
|
bnez t0, conslist_1
|
|
conslist_done:
|
|
lw ra, -4(fp)
|
|
lw fp, -8(fp)
|
|
addi sp, sp, 8
|
|
jr ra
|
|
|
|
|
|
.globl strcat
|
|
strcat:
|
|
|
|
addi sp, sp, -12
|
|
sw ra, 8(sp)
|
|
sw fp, 4(sp)
|
|
addi fp, sp, 12
|
|
lw t0, 4(fp)
|
|
lw t1, 0(fp)
|
|
lw t0, @.__len__(t0)
|
|
beqz t0, strcat_4
|
|
lw t1, @.__len__(t1)
|
|
beqz t1, strcat_5
|
|
add t1, t0, t1
|
|
sw t1, -12(fp)
|
|
addi t1, t1, 4
|
|
srli t1, t1, 2
|
|
addi a1, t1, @listHeaderWords
|
|
la a0, $str$prototype
|
|
jal alloc2
|
|
lw t0, -12(fp)
|
|
sw t0, @.__len__(a0)
|
|
addi t2, a0, 16
|
|
lw t0, 4(fp)
|
|
lw t1, @.__len__(t0)
|
|
addi t0, t0, @.__str__
|
|
strcat_1:
|
|
beqz t1, strcat_2
|
|
lbu t3, 0(t0)
|
|
sb t3, 0(t2)
|
|
addi t1, t1, -1
|
|
addi t0, t0, 1
|
|
addi t2, t2, 1
|
|
j strcat_1
|
|
strcat_2:
|
|
lw t0, 0(fp)
|
|
lw t1, 12(t0)
|
|
addi t0, t0, 16
|
|
strcat_3:
|
|
beqz t1, strcat_6
|
|
lbu t3, 0(t0)
|
|
sb t3, 0(t2)
|
|
addi t1, t1, -1
|
|
addi t0, t0, 1
|
|
addi t2, t2, 1
|
|
j strcat_3
|
|
strcat_4:
|
|
lw a0, 0(fp)
|
|
j strcat_7
|
|
strcat_5:
|
|
lw a0, 4(fp)
|
|
j strcat_7
|
|
strcat_6:
|
|
sb zero, 0(t2)
|
|
strcat_7:
|
|
lw ra, -4(fp)
|
|
lw fp, -8(fp)
|
|
addi sp, sp, 12
|
|
jr ra
|
|
|
|
|
|
.globl streql
|
|
streql:
|
|
|
|
addi sp, sp, -8
|
|
sw ra, 4(sp)
|
|
sw fp, 0(sp)
|
|
addi fp, sp, 8
|
|
lw a1, 4(fp)
|
|
lw a2, 0(fp)
|
|
lw t0, @.__len__(a1)
|
|
lw t1, @.__len__(a2)
|
|
bne t0, t1, streql_no
|
|
streql_1:
|
|
lbu t2, @.__str__(a1)
|
|
lbu t3, @.__str__(a2)
|
|
bne t2, t3, streql_no
|
|
addi a1, a1, 1
|
|
addi a2, a2, 1
|
|
addi t0, t0, -1
|
|
bgtz t0, streql_1
|
|
li a0, 1
|
|
j streql_end
|
|
streql_no:
|
|
xor a0, a0, a0
|
|
streql_end:
|
|
lw ra, -4(fp)
|
|
lw fp, -8(fp)
|
|
addi sp, sp, 8
|
|
jr ra
|
|
|
|
|
|
.globl strneql
|
|
strneql:
|
|
|
|
addi sp, sp, -8
|
|
sw ra, 4(sp)
|
|
sw fp, 0(sp)
|
|
addi fp, sp, 8
|
|
lw a1, 4(fp)
|
|
lw a2, 0(fp)
|
|
lw t0, @.__len__(a1)
|
|
lw t1, @.__len__(a2)
|
|
bne t0, t1, strneql_yes
|
|
strneql_1:
|
|
lbu t2, @.__str__(a1)
|
|
lbu t3, @.__str__(a2)
|
|
bne t2, t3, strneql_yes
|
|
addi a1, a1, 1
|
|
addi a2, a2, 1
|
|
addi t0, t0, -1
|
|
bgtz t0, strneql_1
|
|
xor a0, a0, a0
|
|
j strneql_end
|
|
strneql_yes:
|
|
li a0, 1
|
|
strneql_end:
|
|
lw ra, -4(fp)
|
|
lw fp, -8(fp)
|
|
addi sp, sp, 8
|
|
jr ra
|
|
|
|
|
|
.globl makeint
|
|
makeint:
|
|
|
|
addi sp, sp, -8
|
|
sw ra, 4(sp)
|
|
sw a0, 0(sp)
|
|
la a0, $int$prototype
|
|
jal ra, alloc
|
|
lw t0, 0(sp)
|
|
sw t0, @.__int__(a0)
|
|
lw ra, 4(sp)
|
|
addi sp, sp, 8
|
|
jr ra
|
|
|
|
|
|
.globl makebool
|
|
makebool:
|
|
|
|
slli a0, a0, 4
|
|
la t0, @bool.False
|
|
add a0, a0, t0
|
|
jr ra
|
|
|
|
|
|
.globl noconv
|
|
noconv:
|
|
|
|
jr ra
|
|
|
|
|
|
.globl initchars
|
|
initchars:
|
|
|
|
la a0, $str$prototype
|
|
lw t0, 0(a0)
|
|
lw t1, 4(a0)
|
|
lw t2, 8(a0)
|
|
li t3, 1
|
|
la a0, allChars
|
|
li t4, 256
|
|
mv t5, zero
|
|
initchars_1:
|
|
sw t0, 0(a0)
|
|
sw t1, 4(a0)
|
|
sw t2, 8(a0)
|
|
sw t3, 12(a0)
|
|
sw t5, 16(a0)
|
|
addi a0, a0, 20
|
|
addi t5, t5, 1
|
|
bne t4, t5, initchars_1
|
|
jr ra
|
|
.data
|
|
.align 2
|
|
.globl allChars
|
|
allChars:
|
|
.space 5120
|
|
.text
|
|
|
|
|
|
.globl error.None
|
|
error.None:
|
|
li a0, 4 # Exit code for: Operation on None
|
|
la a1, const_18 # Load error message as str
|
|
addi a1, a1, 16 # Load address of attribute __str__
|
|
j abort # Abort
|
|
|
|
.globl error.Div
|
|
error.Div:
|
|
li a0, 2 # Exit code for: Division by zero
|
|
la a1, const_19 # Load error message as str
|
|
addi a1, a1, 16 # Load address of attribute __str__
|
|
j abort # Abort
|
|
|
|
.globl error.OOB
|
|
error.OOB:
|
|
li a0, 3 # Exit code for: Index out of bounds
|
|
la a1, const_20 # Load error message as str
|
|
addi a1, a1, 16 # Load address of attribute __str__
|
|
j abort # Abort
|
|
|
|
.data
|
|
|
|
.globl const_0
|
|
const_0:
|
|
.word 2 # Type tag for class: bool
|
|
.word 4 # Object size
|
|
.word $bool$dispatchTable # Pointer to dispatch table
|
|
.word 0 # Constant value of attribute: __bool__
|
|
.align 2
|
|
|
|
.globl const_1
|
|
const_1:
|
|
.word 2 # Type tag for class: bool
|
|
.word 4 # Object size
|
|
.word $bool$dispatchTable # Pointer to dispatch table
|
|
.word 1 # Constant value of attribute: __bool__
|
|
.align 2
|
|
|
|
.globl const_2
|
|
const_2:
|
|
.word 3 # Type tag for class: str
|
|
.word 5 # Object size
|
|
.word $str$dispatchTable # Pointer to dispatch table
|
|
.word 0 # Constant value of attribute: __len__
|
|
.string "" # Constant value of attribute: __str__
|
|
.align 2
|
|
|
|
.globl const_17
|
|
const_17:
|
|
.word 3 # Type tag for class: str
|
|
.word 8 # Object size
|
|
.word $str$dispatchTable # Pointer to dispatch table
|
|
.word 13 # Constant value of attribute: __len__
|
|
.string "Out of memory" # Constant value of attribute: __str__
|
|
.align 2
|
|
|
|
.globl const_4
|
|
const_4:
|
|
.word 3 # Type tag for class: str
|
|
.word 6 # Object size
|
|
.word $str$dispatchTable # Pointer to dispatch table
|
|
.word 4 # Constant value of attribute: __len__
|
|
.string "True" # Constant value of attribute: __str__
|
|
.align 2
|
|
|
|
.globl const_5
|
|
const_5:
|
|
.word 3 # Type tag for class: str
|
|
.word 6 # Object size
|
|
.word $str$dispatchTable # Pointer to dispatch table
|
|
.word 5 # Constant value of attribute: __len__
|
|
.string "False" # Constant value of attribute: __str__
|
|
.align 2
|
|
|
|
.globl const_16
|
|
const_16:
|
|
.word 3 # Type tag for class: str
|
|
.word 5 # Object size
|
|
.word $str$dispatchTable # Pointer to dispatch table
|
|
.word 1 # Constant value of attribute: __len__
|
|
.string "-" # Constant value of attribute: __str__
|
|
.align 2
|
|
|
|
.globl const_6
|
|
const_6:
|
|
.word 3 # Type tag for class: str
|
|
.word 5 # Object size
|
|
.word $str$dispatchTable # Pointer to dispatch table
|
|
.word 1 # Constant value of attribute: __len__
|
|
.string "0" # Constant value of attribute: __str__
|
|
.align 2
|
|
|
|
.globl const_7
|
|
const_7:
|
|
.word 3 # Type tag for class: str
|
|
.word 5 # Object size
|
|
.word $str$dispatchTable # Pointer to dispatch table
|
|
.word 1 # Constant value of attribute: __len__
|
|
.string "1" # Constant value of attribute: __str__
|
|
.align 2
|
|
|
|
.globl const_19
|
|
const_19:
|
|
.word 3 # Type tag for class: str
|
|
.word 9 # Object size
|
|
.word $str$dispatchTable # Pointer to dispatch table
|
|
.word 16 # Constant value of attribute: __len__
|
|
.string "Division by zero" # Constant value of attribute: __str__
|
|
.align 2
|
|
|
|
.globl const_8
|
|
const_8:
|
|
.word 3 # Type tag for class: str
|
|
.word 5 # Object size
|
|
.word $str$dispatchTable # Pointer to dispatch table
|
|
.word 1 # Constant value of attribute: __len__
|
|
.string "2" # Constant value of attribute: __str__
|
|
.align 2
|
|
|
|
.globl const_9
|
|
const_9:
|
|
.word 3 # Type tag for class: str
|
|
.word 5 # Object size
|
|
.word $str$dispatchTable # Pointer to dispatch table
|
|
.word 1 # Constant value of attribute: __len__
|
|
.string "3" # Constant value of attribute: __str__
|
|
.align 2
|
|
|
|
.globl const_10
|
|
const_10:
|
|
.word 3 # Type tag for class: str
|
|
.word 5 # Object size
|
|
.word $str$dispatchTable # Pointer to dispatch table
|
|
.word 1 # Constant value of attribute: __len__
|
|
.string "4" # Constant value of attribute: __str__
|
|
.align 2
|
|
|
|
.globl const_11
|
|
const_11:
|
|
.word 3 # Type tag for class: str
|
|
.word 5 # Object size
|
|
.word $str$dispatchTable # Pointer to dispatch table
|
|
.word 1 # Constant value of attribute: __len__
|
|
.string "5" # Constant value of attribute: __str__
|
|
.align 2
|
|
|
|
.globl const_12
|
|
const_12:
|
|
.word 3 # Type tag for class: str
|
|
.word 5 # Object size
|
|
.word $str$dispatchTable # Pointer to dispatch table
|
|
.word 1 # Constant value of attribute: __len__
|
|
.string "6" # Constant value of attribute: __str__
|
|
.align 2
|
|
|
|
.globl const_20
|
|
const_20:
|
|
.word 3 # Type tag for class: str
|
|
.word 9 # Object size
|
|
.word $str$dispatchTable # Pointer to dispatch table
|
|
.word 19 # Constant value of attribute: __len__
|
|
.string "Index out of bounds" # Constant value of attribute: __str__
|
|
.align 2
|
|
|
|
.globl const_13
|
|
const_13:
|
|
.word 3 # Type tag for class: str
|
|
.word 5 # Object size
|
|
.word $str$dispatchTable # Pointer to dispatch table
|
|
.word 1 # Constant value of attribute: __len__
|
|
.string "7" # Constant value of attribute: __str__
|
|
.align 2
|
|
|
|
.globl const_14
|
|
const_14:
|
|
.word 3 # Type tag for class: str
|
|
.word 5 # Object size
|
|
.word $str$dispatchTable # Pointer to dispatch table
|
|
.word 1 # Constant value of attribute: __len__
|
|
.string "8" # Constant value of attribute: __str__
|
|
.align 2
|
|
|
|
.globl const_15
|
|
const_15:
|
|
.word 3 # Type tag for class: str
|
|
.word 5 # Object size
|
|
.word $str$dispatchTable # Pointer to dispatch table
|
|
.word 1 # Constant value of attribute: __len__
|
|
.string "9" # Constant value of attribute: __str__
|
|
.align 2
|
|
|
|
.globl const_18
|
|
const_18:
|
|
.word 3 # Type tag for class: str
|
|
.word 9 # Object size
|
|
.word $str$dispatchTable # Pointer to dispatch table
|
|
.word 17 # Constant value of attribute: __len__
|
|
.string "Operation on None" # Constant value of attribute: __str__
|
|
.align 2
|
|
|
|
.globl const_3
|
|
const_3:
|
|
.word 3 # Type tag for class: str
|
|
.word 9 # Object size
|
|
.word $str$dispatchTable # Pointer to dispatch table
|
|
.word 16 # Constant value of attribute: __len__
|
|
.string "Invalid argument" # Constant value of attribute: __str__
|
|
.align 2
|