stdio-c.asm 36 KB
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# Generated by cct
# Franck Pommereau (2018)
# Adapted from Atul Varma's c.py (Spring 2004)

#
# on computer start: call main and halt
#

IRQ0:
  set  R9 @main
  call R9
  halt

#
# code from file 'stdio.c'
#

  # BEGIN FUNCTION: puts() -----------------------------------------------
  #
  # Function type: function(pointer(char))->int

# stdio.c:32 (enter function)
puts:
  push BP                           # Save old frame pointer
  mov  SP BP                        # Set new frame pointer
  set  R9 2                         # Allocate 2 words for local+temp vars
  sub  SP R9 SP                     # ... shift SP
  push R7                           # Save callee-save register
  push R6                           # Save callee-save register
  push R5                           # Save callee-save register
  push R4                           # Save callee-save register
# stdio.c:33 
# stdio.c:35 
  set  R9 -2                        # Get BP-relative address of n
  add  R9 BP R7                     # Compute address of n
  set  R8 0                         # Use constant 0
  mov  R8 R6                        # Assignement '=': set result
  st   R6 R7                        # ... save value
# stdio.c:36 
  set  R9 -1                        # Get BP-relative address of i
  add  R9 BP R6                     # Compute address of i
  set  R8 0                         # Use constant 0
  mov  R8 R7                        # Assignement '=': set result
  st   R7 R6                        # ... save value
# stdio.c:37 

  # WHILE loop - begin

_L1_test:
  set  R7 1                         # Load numeric constant 1
  set  R9 @_L2_done                 # Point towards loop exit
  jz   R7 R9                        # ... if result is zero, jump to it
# stdio.c:38 

  # IF statment - begin

  ldi  R7 3                         # Get value of s
  ldi  R6 -1                        # Get value of i
  add  R7 R6 R5                     # Load addr of array index
  ld   R5 R5                        # Load array value
  set  R9 @_L4_else                 # Point towards else clause
  jz   R5 R9                        # ... if result is zero, jump to it

  # IF statment - THEN clause - begin

# stdio.c:39 
  set  R9 -2                        # Get BP-relative address of n
  add  R9 BP R5                     # Compute address of n

  # FUNCTION CALL to putc() - begin

  ldi  R7 3                         # Get value of s
  ldi  R6 -1                        # Get value of i
  add  R7 R6 R4                     # Load addr of array index
  ld   R4 R4                        # Load array value
  push R4                           # Push arg 1
  set  R9 @putc                     # Point towards function putc()
  call R9                           # ... call it
  set  R9 1                         # Deallocate argument stack
  add  R9 SP SP                     # ... shift SP

  # FUNCTION CALL to putc() - end

  ld   R5 R4                        # Assignement '+=': load initial left value
  add  R4 R0 R4                     # ... add right value
  st   R4 R5                        # ... save value
# stdio.c:40 
  set  R9 -1                        # Get BP-relative address of i
  add  R9 BP R4                     # Compute address of i
  set  R8 1                         # Use constant 1
  ld   R4 R5                        # Assignement '+=': load initial left value
  add  R5 R8 R5                     # ... add right value
  st   R5 R4                        # ... save value

  # IF statment - THEN clause - end

  set  R9 @_L3_done                 # Point towards if end
  jmp  R9                           # ... jump to it

  # IF statment - ELSE clause - begin

_L4_else:
# stdio.c:41 
# <string>:0 
  set  R9 @_L2_done                 # Loop: break statement
  jmp  R9                           # ... jump to loop exit

  # IF statment - ELSE clause - end

_L3_done:

  # IF statment - end

  set  R9 @_L1_test                 # Point towards loop start
  jmp  R9                           # ... jump to it
_L2_done:

  # WHILE loop - end

# stdio.c:45 
  ldi  R5 -2                        # Get value of n
  mov  R5 R0                        # Set return value
  set  R9 @_L0_function_end         # Point towards function exit
  jmp  R9                           # ... jump to it
# stdio.c:32 (exit function)
_L0_function_end:
  pop  R4                           # Restore callee-save register
  pop  R5                           # Restore callee-save register
  pop  R6                           # Restore callee-save register
  pop  R7                           # Restore callee-save register
  mov  BP SP                        # Deallocate local+temp vars
  pop  BP                           # Restore old stack frame
  ret

  # END FUNCTION: puts() -------------------------------------------------


  # BEGIN FUNCTION: putu() -----------------------------------------------
  #
  # Function type: function(int,char)->int

# stdio.c:55 (enter function)
putu:
  push BP                           # Save old frame pointer
  mov  SP BP                        # Set new frame pointer
  set  R9 6                         # Allocate 6 words for local+temp vars
  sub  SP R9 SP                     # ... shift SP
  push R7                           # Save callee-save register
  push R6                           # Save callee-save register
  push R5                           # Save callee-save register
  push R4                           # Save callee-save register
# stdio.c:56 
# stdio.c:62 
  set  R9 -4                        # Get BP-relative address of DIGITS
  add  R9 BP R7                     # Compute address of DIGITS
  set  R6 @_LC0                     # Get addr of string literal '0123456...'
  mov  R6 R5                        # Assignement '=': set result
  st   R5 R7                        # ... save value
# stdio.c:63 
  set  R9 -1                        # Get BP-relative address of str
  add  R9 BP R5                     # Compute address of str
  set  R7 @_LC1                     # Get addr of string literal '65536'
  mov  R7 R6                        # Assignement '=': set result
  st   R6 R5                        # ... save value
# stdio.c:64 
  set  R9 -3                        # Get BP-relative address of n
  add  R9 BP R6                     # Compute address of n
  set  R8 0                         # Use constant 0
  mov  R8 R5                        # Assignement '=': set result
  st   R5 R6                        # ... save value
# stdio.c:65 
  set  R9 -2                        # Get BP-relative address of p
  add  R9 BP R5                     # Compute address of p
  set  R8 0                         # Use constant 0
  mov  R8 R6                        # Assignement '=': set result
  st   R6 R5                        # ... save value
# stdio.c:66 

  # IF statment - begin

  ldi  R6 4                         # Get value of f
  set  R8 78                        # Use constant 120
  eq   R6 R8 R6                     # Perform '=='
  set  R9 @_L7_else                 # Point towards else clause
  jz   R6 R9                        # ... if result is zero, jump to it

  # IF statment - THEN clause - begin

# stdio.c:67 
  set  R9 -5                        # Get BP-relative address of div
  add  R9 BP R6                     # Compute address of div
  set  R8 10                        # Use constant 16
  mov  R8 R5                        # Assignement '=': set result
  st   R5 R6                        # ... save value

  # IF statment - THEN clause - end

  set  R9 @_L6_done                 # Point towards if end
  jmp  R9                           # ... jump to it

  # IF statment - ELSE clause - begin

_L7_else:
# stdio.c:69 
  set  R9 -5                        # Get BP-relative address of div
  add  R9 BP R5                     # Compute address of div
  set  R8 A                         # Use constant 10
  mov  R8 R6                        # Assignement '=': set result
  st   R6 R5                        # ... save value

  # IF statment - ELSE clause - end

_L6_done:

  # IF statment - end

# stdio.c:71 

  # WHILE loop - begin

_L8_test:
  ldi  R6 3                         # Get value of u
  set  R9 @_L9_done                 # Point towards loop exit
  jz   R6 R9                        # ... if result is zero, jump to it
# stdio.c:72 
  set  R9 -6                        # Get BP-relative address of r
  add  R9 BP R6                     # Compute address of r
  ldi  R5 3                         # Get value of u
  ldi  R7 -5                        # Get value of div
  mod  R5 R7 R5                     # Perform '%'
  mov  R5 R7                        # Assignement '=': set result
  st   R7 R6                        # ... save value
# stdio.c:73 
  ldi  R7 -1                        # Get value of str
  ldi  R6 -2                        # Get value of p
  add  R7 R6 R5                     # Load addr of array index
  ldi  R7 -4                        # Get value of DIGITS
  ldi  R6 -6                        # Get value of r
  add  R7 R6 R4                     # Load addr of array index
  ld   R4 R4                        # Load array value
  mov  R4 R7                        # Assignement '=': set result
  st   R7 R5                        # ... save value
# stdio.c:74 
  set  R9 -2                        # Get BP-relative address of p
  add  R9 BP R7                     # Compute address of p
  set  R8 1                         # Use constant 1
  ld   R7 R5                        # Assignement '+=': load initial left value
  add  R5 R8 R5                     # ... add right value
  st   R5 R7                        # ... save value
# stdio.c:75 
  set  R9 3                         # Get BP-relative address of u
  add  R9 BP R5                     # Compute address of u
  ldi  R7 3                         # Get value of u
  ldi  R4 -5                        # Get value of div
  div  R7 R4 R7                     # Perform '/'
  mov  R7 R4                        # Assignement '=': set result
  st   R4 R5                        # ... save value
  set  R9 @_L8_test                 # Point towards loop start
  jmp  R9                           # ... jump to it
_L9_done:

  # WHILE loop - end

# stdio.c:77 
  set  R9 -2                        # Get BP-relative address of p
  add  R9 BP R4                     # Compute address of p
  set  R8 1                         # Use constant 1
  ld   R4 R5                        # Assignement '-=': load initial left value
  sub  R5 R8 R5                     # ... subtract right value
  st   R5 R4                        # ... save value
# stdio.c:78 

  # WHILE loop - begin

_L10_test:
  ldi  R5 -2                        # Get value of p
  set  R8 0                         # Use constant 0
  inc  R5                           # Perform 'a >= b'
  gt   R5 R8 R5                     # ... that is 'a+1 > b'
  set  R9 @_L11_done                # Point towards loop exit
  jz   R5 R9                        # ... if result is zero, jump to it
# stdio.c:79 
  set  R9 -3                        # Get BP-relative address of n
  add  R9 BP R5                     # Compute address of n

  # FUNCTION CALL to putc() - begin

  ldi  R4 -1                        # Get value of str
  ldi  R7 -2                        # Get value of p
  add  R4 R7 R6                     # Load addr of array index
  ld   R6 R6                        # Load array value
  push R6                           # Push arg 1
  set  R9 @putc                     # Point towards function putc()
  call R9                           # ... call it
  set  R9 1                         # Deallocate argument stack
  add  R9 SP SP                     # ... shift SP

  # FUNCTION CALL to putc() - end

  ld   R5 R6                        # Assignement '+=': load initial left value
  add  R6 R0 R6                     # ... add right value
  st   R6 R5                        # ... save value
# stdio.c:80 
  set  R9 -2                        # Get BP-relative address of p
  add  R9 BP R6                     # Compute address of p
  set  R8 1                         # Use constant 1
  ld   R6 R5                        # Assignement '-=': load initial left value
  sub  R5 R8 R5                     # ... subtract right value
  st   R5 R6                        # ... save value
  set  R9 @_L10_test                # Point towards loop start
  jmp  R9                           # ... jump to it
_L11_done:

  # WHILE loop - end

# stdio.c:82 
  ldi  R5 -3                        # Get value of n
  mov  R5 R0                        # Set return value
  set  R9 @_L5_function_end         # Point towards function exit
  jmp  R9                           # ... jump to it
# stdio.c:55 (exit function)
_L5_function_end:
  pop  R4                           # Restore callee-save register
  pop  R5                           # Restore callee-save register
  pop  R6                           # Restore callee-save register
  pop  R7                           # Restore callee-save register
  mov  BP SP                        # Deallocate local+temp vars
  pop  BP                           # Restore old stack frame
  ret

  # END FUNCTION: putu() -------------------------------------------------


  # BEGIN FUNCTION: puti() -----------------------------------------------
  #
  # Function type: function(int)->int

# stdio.c:85 (enter function)
puti:
  push BP                           # Save old frame pointer
  mov  SP BP                        # Set new frame pointer
  set  R9 1                         # Allocate 1 words for local+temp vars
  sub  SP R9 SP                     # ... shift SP
  push R7                           # Save callee-save register
  push R6                           # Save callee-save register
# stdio.c:86 
# stdio.c:87 
  set  R9 -1                        # Get BP-relative address of n
  add  R9 BP R7                     # Compute address of n
  set  R8 0                         # Use constant 0
  mov  R8 R6                        # Assignement '=': set result
  st   R6 R7                        # ... save value
# stdio.c:88 

  # IF statment - begin

  ldi  R6 3                         # Get value of i
  set  R8 7FFF                      # Use constant 32767
  gt   R6 R8 R6                     # Perform '>'
  set  R9 @_L14_else                # Point towards else clause
  jz   R6 R9                        # ... if result is zero, jump to it

  # IF statment - THEN clause - begin

# stdio.c:89 
  set  R9 -1                        # Get BP-relative address of n
  add  R9 BP R6                     # Compute address of n

  # FUNCTION CALL to putc() - begin

  set  R8 2D                        # Use constant 45
  push R8                           # Push arg 1
  set  R9 @putc                     # Point towards function putc()
  call R9                           # ... call it
  set  R9 1                         # Deallocate argument stack
  add  R9 SP SP                     # ... shift SP

  # FUNCTION CALL to putc() - end

  ld   R6 R7                        # Assignement '+=': load initial left value
  add  R7 R0 R7                     # ... add right value
  st   R7 R6                        # ... save value
# stdio.c:90 
  set  R9 -1                        # Get BP-relative address of n
  add  R9 BP R7                     # Compute address of n

  # FUNCTION CALL to putu() - begin

  set  R8 75                        # Use constant 117
  push R8                           # Push arg 2
  ldi  R6 3                         # Get value of i
  neg  R6 R6                        # Perform unary negation
  push R6                           # Push arg 1
  set  R9 @putu                     # Point towards function putu()
  call R9                           # ... call it
  set  R9 2                         # Deallocate argument stack
  add  R9 SP SP                     # ... shift SP

  # FUNCTION CALL to putu() - end

  ld   R7 R6                        # Assignement '+=': load initial left value
  add  R6 R0 R6                     # ... add right value
  st   R6 R7                        # ... save value
# stdio.c:91 
  ldi  R6 -1                        # Get value of n
  mov  R6 R0                        # Set return value
  set  R9 @_L12_function_end        # Point towards function exit
  jmp  R9                           # ... jump to it

  # IF statment - THEN clause - end

  set  R9 @_L13_done                # Point towards if end
  jmp  R9                           # ... jump to it

  # IF statment - ELSE clause - begin

_L14_else:
# stdio.c:93 

  # FUNCTION CALL to putu() - begin

  set  R8 75                        # Use constant 117
  push R8                           # Push arg 2
  ldi  R6 3                         # Get value of i
  push R6                           # Push arg 1
  set  R9 @putu                     # Point towards function putu()
  call R9                           # ... call it
  set  R9 2                         # Deallocate argument stack
  add  R9 SP SP                     # ... shift SP

  # FUNCTION CALL to putu() - end

  mov  R0 R0                        # Set return value
  set  R9 @_L12_function_end        # Point towards function exit
  jmp  R9                           # ... jump to it

  # IF statment - ELSE clause - end

_L13_done:

  # IF statment - end

# stdio.c:85 (exit function)
_L12_function_end:
  pop  R6                           # Restore callee-save register
  pop  R7                           # Restore callee-save register
  mov  BP SP                        # Deallocate local+temp vars
  pop  BP                           # Restore old stack frame
  ret

  # END FUNCTION: puti() -------------------------------------------------


  # BEGIN FUNCTION: printf() ---------------------------------------------
  #
  # Function type: function(pointer(char))->int

# stdio.c:97 (enter function)
printf:
  push BP                           # Save old frame pointer
  mov  SP BP                        # Set new frame pointer
  set  R9 9                         # Allocate 9 words for local+temp vars
  sub  SP R9 SP                     # ... shift SP
  push R7                           # Save callee-save register
  push R6                           # Save callee-save register
  push R5                           # Save callee-save register
  push R4                           # Save callee-save register
# stdio.c:98 
# stdio.c:103 
  set  R9 -1                        # Get BP-relative address of iargs
  add  R9 BP R7                     # Compute address of iargs
  set  R9 3                         # Get BP-relative address of str
  add  R9 BP R6                     # Compute address of str
                                    # (Address-of operator '&' used here)
  mov  R6 R5                        # Assignement '=': set result
  st   R5 R7                        # ... save value
# stdio.c:104 
  set  R9 -3                        # Get BP-relative address of cargs
  add  R9 BP R5                     # Compute address of cargs
  set  R9 3                         # Get BP-relative address of str
  add  R9 BP R7                     # Compute address of str
                                    # (Address-of operator '&' used here)
  mov  R7 R6                        # Assignement '=': set result
  st   R6 R5                        # ... save value
# stdio.c:105 
  set  R9 -5                        # Get BP-relative address of a
  add  R9 BP R6                     # Compute address of a
  set  R8 1                         # Use constant 1
  mov  R8 R5                        # Assignement '=': set result
  st   R5 R6                        # ... save value
# stdio.c:106 
  set  R9 -4                        # Get BP-relative address of n
  add  R9 BP R5                     # Compute address of n
  set  R8 0                         # Use constant 0
  mov  R8 R6                        # Assignement '=': set result
  st   R6 R5                        # ... save value
# stdio.c:107 
  set  R9 -2                        # Get BP-relative address of i
  add  R9 BP R6                     # Compute address of i
  set  R8 0                         # Use constant 0
  mov  R8 R5                        # Assignement '=': set result
  st   R5 R6                        # ... save value
# stdio.c:108 

  # WHILE loop - begin

_L16_test:
  set  R5 1                         # Load numeric constant 1
  set  R9 @_L17_done                # Point towards loop exit
  jz   R5 R9                        # ... if result is zero, jump to it
# stdio.c:109 

  # IF statment - begin

  ldi  R5 3                         # Get value of str
  ldi  R6 -2                        # Get value of i
  add  R5 R6 R7                     # Load addr of array index
  ld   R7 R7                        # Load array value
  set  R8 0                         # Use constant 0
  eq   R7 R8 R7                     # Perform '=='
  set  R9 @_L19_else                # Point towards else clause
  jz   R7 R9                        # ... if result is zero, jump to it

  # IF statment - THEN clause - begin

# <string>:0 
  set  R9 @_L17_done                # Loop: break statement
  jmp  R9                           # ... jump to loop exit

  # IF statment - THEN clause - end

  set  R9 @_L18_done                # Point towards if end
  jmp  R9                           # ... jump to it

  # IF statment - ELSE clause - begin

_L19_else:
# stdio.c:111 

  # IF statment - begin

  ldi  R7 3                         # Get value of str
  ldi  R5 -2                        # Get value of i
  add  R7 R5 R6                     # Load addr of array index
  ld   R6 R6                        # Load array value
  set  R8 25                        # Use constant 37
  eq   R6 R8 R6                     # Perform '=='
  set  R9 @_L21_else                # Point towards else clause
  jz   R6 R9                        # ... if result is zero, jump to it

  # IF statment - THEN clause - begin

# stdio.c:112 
  set  R9 -2                        # Get BP-relative address of i
  add  R9 BP R6                     # Compute address of i
  set  R8 1                         # Use constant 1
  ld   R6 R7                        # Assignement '+=': load initial left value
  add  R7 R8 R7                     # ... add right value
  st   R7 R6                        # ... save value
# stdio.c:113 

  # IF statment - begin

  ldi  R7 3                         # Get value of str
  ldi  R6 -2                        # Get value of i
  add  R7 R6 R5                     # Load addr of array index
  ld   R5 R5                        # Load array value
  set  R8 69                        # Use constant 105
  eq   R5 R8 R5                     # Perform '=='
  set  R9 @_L23_else                # Point towards else clause
  jz   R5 R9                        # ... if result is zero, jump to it

  # IF statment - THEN clause - begin

# stdio.c:114 
  set  R9 -4                        # Get BP-relative address of n
  add  R9 BP R5                     # Compute address of n

  # FUNCTION CALL to puti() - begin

  ldi  R7 -1                        # Get value of iargs
  ldi  R6 -5                        # Get value of a
  add  R7 R6 R4                     # Load addr of array index
  ld   R4 R4                        # Load array value
  push R4                           # Push arg 1
  set  R9 @puti                     # Point towards function puti()
  call R9                           # ... call it
  set  R9 1                         # Deallocate argument stack
  add  R9 SP SP                     # ... shift SP

  # FUNCTION CALL to puti() - end

  ld   R5 R4                        # Assignement '+=': load initial left value
  add  R4 R0 R4                     # ... add right value
  st   R4 R5                        # ... save value

  # IF statment - THEN clause - end

  set  R9 @_L22_done                # Point towards if end
  jmp  R9                           # ... jump to it

  # IF statment - ELSE clause - begin

_L23_else:
# stdio.c:115 

  # IF statment - begin

  ldi  R4 3                         # Get value of str
  ldi  R5 -2                        # Get value of i
  add  R4 R5 R0                     # Load addr of array index
  ld   R0 R0                        # Load array value
  set  R8 75                        # Use constant 117
  eq   R0 R8 R0                     # Perform '=='
  set  R9 @_L25_else                # Point towards else clause
  jz   R0 R9                        # ... if result is zero, jump to it

  # IF statment - THEN clause - begin

# stdio.c:116 
  set  R9 -4                        # Get BP-relative address of n
  add  R9 BP R0                     # Compute address of n

  # FUNCTION CALL to putu() - begin

  sti R0 -6                         # Save caller-save register to temp
  set  R8 75                        # Use constant 117
  push R8                           # Push arg 2
  ldi  R0 -1                        # Get value of iargs
  ldi  R4 -5                        # Get value of a
  add  R0 R4 R5                     # Load addr of array index
  ld   R5 R5                        # Load array value
  push R5                           # Push arg 1
  set  R9 @putu                     # Point towards function putu()
  call R9                           # ... call it
  set  R9 2                         # Deallocate argument stack
  add  R9 SP SP                     # ... shift SP

  # FUNCTION CALL to putu() - end

  ldi R5 -6                         # Stack machine: copy temp to register
  ld   R5 R4                        # Assignement '+=': load initial left value
  add  R4 R0 R4                     # ... add right value
  st   R4 R5                        # ... save value

  # IF statment - THEN clause - end

  set  R9 @_L24_done                # Point towards if end
  jmp  R9                           # ... jump to it

  # IF statment - ELSE clause - begin

_L25_else:
# stdio.c:117 

  # IF statment - begin

  ldi  R4 3                         # Get value of str
  ldi  R5 -2                        # Get value of i
  add  R4 R5 R0                     # Load addr of array index
  ld   R0 R0                        # Load array value
  set  R8 73                        # Use constant 115
  eq   R0 R8 R0                     # Perform '=='
  set  R9 @_L27_else                # Point towards else clause
  jz   R0 R9                        # ... if result is zero, jump to it

  # IF statment - THEN clause - begin

# stdio.c:118 
  set  R9 -4                        # Get BP-relative address of n
  add  R9 BP R0                     # Compute address of n

  # FUNCTION CALL to puts() - begin

  sti R0 -7                         # Save caller-save register to temp
  ldi  R0 -3                        # Get value of cargs
  ldi  R4 -5                        # Get value of a
  add  R0 R4 R5                     # Load addr of array index
  ld   R5 R5                        # Load array value
  push R5                           # Push arg 1
  set  R9 @puts                     # Point towards function puts()
  call R9                           # ... call it
  set  R9 1                         # Deallocate argument stack
  add  R9 SP SP                     # ... shift SP

  # FUNCTION CALL to puts() - end

  ldi R5 -7                         # Stack machine: copy temp to register
  ld   R5 R4                        # Assignement '+=': load initial left value
  add  R4 R0 R4                     # ... add right value
  st   R4 R5                        # ... save value

  # IF statment - THEN clause - end

  set  R9 @_L26_done                # Point towards if end
  jmp  R9                           # ... jump to it

  # IF statment - ELSE clause - begin

_L27_else:
# stdio.c:119 

  # IF statment - begin

  ldi  R4 3                         # Get value of str
  ldi  R5 -2                        # Get value of i
  add  R4 R5 R0                     # Load addr of array index
  ld   R0 R0                        # Load array value
  set  R8 78                        # Use constant 120
  eq   R0 R8 R0                     # Perform '=='
  set  R9 @_L29_else                # Point towards else clause
  jz   R0 R9                        # ... if result is zero, jump to it

  # IF statment - THEN clause - begin

# stdio.c:120 
  set  R9 -4                        # Get BP-relative address of n
  add  R9 BP R0                     # Compute address of n

  # FUNCTION CALL to putu() - begin

  sti R0 -8                         # Save caller-save register to temp
  set  R8 78                        # Use constant 120
  push R8                           # Push arg 2
  ldi  R0 -1                        # Get value of iargs
  ldi  R4 -5                        # Get value of a
  add  R0 R4 R5                     # Load addr of array index
  ld   R5 R5                        # Load array value
  push R5                           # Push arg 1
  set  R9 @putu                     # Point towards function putu()
  call R9                           # ... call it
  set  R9 2                         # Deallocate argument stack
  add  R9 SP SP                     # ... shift SP

  # FUNCTION CALL to putu() - end

  ldi R5 -8                         # Stack machine: copy temp to register
  ld   R5 R4                        # Assignement '+=': load initial left value
  add  R4 R0 R4                     # ... add right value
  st   R4 R5                        # ... save value

  # IF statment - THEN clause - end

  set  R9 @_L28_done                # Point towards if end
  jmp  R9                           # ... jump to it

  # IF statment - ELSE clause - begin

_L29_else:
# stdio.c:121 

  # IF statment - begin

  ldi  R4 3                         # Get value of str
  ldi  R5 -2                        # Get value of i
  add  R4 R5 R0                     # Load addr of array index
  ld   R0 R0                        # Load array value
  set  R8 25                        # Use constant 37
  eq   R0 R8 R0                     # Perform '=='
  set  R9 @_L31_else                # Point towards else clause
  jz   R0 R9                        # ... if result is zero, jump to it

  # IF statment - THEN clause - begin

# stdio.c:122 
  set  R9 -4                        # Get BP-relative address of n
  add  R9 BP R0                     # Compute address of n

  # FUNCTION CALL to putc() - begin

  sti R0 -9                         # Save caller-save register to temp
  set  R8 25                        # Use constant 37
  push R8                           # Push arg 1
  set  R9 @putc                     # Point towards function putc()
  call R9                           # ... call it
  set  R9 1                         # Deallocate argument stack
  add  R9 SP SP                     # ... shift SP

  # FUNCTION CALL to putc() - end

  ldi R4 -9                         # Stack machine: copy temp to register
  ld   R4 R5                        # Assignement '+=': load initial left value
  add  R5 R0 R5                     # ... add right value
  st   R5 R4                        # ... save value
# stdio.c:123 
  set  R9 -2                        # Get BP-relative address of i
  add  R9 BP R5                     # Compute address of i
  set  R8 1                         # Use constant 1
  ld   R5 R4                        # Assignement '+=': load initial left value
  add  R4 R8 R4                     # ... add right value
  st   R4 R5                        # ... save value
# <string>:0 
  set  R9 @_L16_test                # Loop: continue statement
  jmp  R9                           # ... jump to loop start

  # IF statment - THEN clause - end

  set  R9 @_L30_done                # Point towards if end
  jmp  R9                           # ... jump to it

  # IF statment - ELSE clause - begin

_L31_else:
# stdio.c:126 
  set  R9 -4                        # Get BP-relative address of n
  add  R9 BP R4                     # Compute address of n

  # FUNCTION CALL to putc() - begin

  set  R8 25                        # Use constant 37
  push R8                           # Push arg 1
  set  R9 @putc                     # Point towards function putc()
  call R9                           # ... call it
  set  R9 1                         # Deallocate argument stack
  add  R9 SP SP                     # ... shift SP

  # FUNCTION CALL to putc() - end

  ld   R4 R5                        # Assignement '+=': load initial left value
  add  R5 R0 R5                     # ... add right value
  st   R5 R4                        # ... save value
# stdio.c:127 
  set  R9 -4                        # Get BP-relative address of n
  add  R9 BP R5                     # Compute address of n

  # FUNCTION CALL to putc() - begin

  ldi  R4 3                         # Get value of str
  ldi  R0 -2                        # Get value of i
  add  R4 R0 R7                     # Load addr of array index
  ld   R7 R7                        # Load array value
  push R7                           # Push arg 1
  set  R9 @putc                     # Point towards function putc()
  call R9                           # ... call it
  set  R9 1                         # Deallocate argument stack
  add  R9 SP SP                     # ... shift SP

  # FUNCTION CALL to putc() - end

  ld   R5 R7                        # Assignement '+=': load initial left value
  add  R7 R0 R7                     # ... add right value
  st   R7 R5                        # ... save value

  # IF statment - ELSE clause - end

_L30_done:

  # IF statment - end


  # IF statment - ELSE clause - end

_L28_done:

  # IF statment - end


  # IF statment - ELSE clause - end

_L26_done:

  # IF statment - end


  # IF statment - ELSE clause - end

_L24_done:

  # IF statment - end


  # IF statment - ELSE clause - end

_L22_done:

  # IF statment - end

# stdio.c:129 
  set  R9 -5                        # Get BP-relative address of a
  add  R9 BP R7                     # Compute address of a
  set  R8 1                         # Use constant 1
  ld   R7 R5                        # Assignement '+=': load initial left value
  add  R5 R8 R5                     # ... add right value
  st   R5 R7                        # ... save value

  # IF statment - THEN clause - end

  set  R9 @_L20_done                # Point towards if end
  jmp  R9                           # ... jump to it

  # IF statment - ELSE clause - begin

_L21_else:
# stdio.c:131 
  set  R9 -4                        # Get BP-relative address of n
  add  R9 BP R5                     # Compute address of n

  # FUNCTION CALL to putc() - begin

  ldi  R7 3                         # Get value of str
  ldi  R0 -2                        # Get value of i
  add  R7 R0 R4                     # Load addr of array index
  ld   R4 R4                        # Load array value
  push R4                           # Push arg 1
  set  R9 @putc                     # Point towards function putc()
  call R9                           # ... call it
  set  R9 1                         # Deallocate argument stack
  add  R9 SP SP                     # ... shift SP

  # FUNCTION CALL to putc() - end

  ld   R5 R4                        # Assignement '+=': load initial left value
  add  R4 R0 R4                     # ... add right value
  st   R4 R5                        # ... save value

  # IF statment - ELSE clause - end

_L20_done:

  # IF statment - end


  # IF statment - ELSE clause - end

_L18_done:

  # IF statment - end

# stdio.c:133 
  set  R9 -2                        # Get BP-relative address of i
  add  R9 BP R4                     # Compute address of i
  set  R8 1                         # Use constant 1
  ld   R4 R5                        # Assignement '+=': load initial left value
  add  R5 R8 R5                     # ... add right value
  st   R5 R4                        # ... save value
  set  R9 @_L16_test                # Point towards loop start
  jmp  R9                           # ... jump to it
_L17_done:

  # WHILE loop - end

# stdio.c:135 
  ldi  R5 -4                        # Get value of n
  mov  R5 R0                        # Set return value
  set  R9 @_L15_function_end        # Point towards function exit
  jmp  R9                           # ... jump to it
# stdio.c:97 (exit function)
_L15_function_end:
  pop  R4                           # Restore callee-save register
  pop  R5                           # Restore callee-save register
  pop  R6                           # Restore callee-save register
  pop  R7                           # Restore callee-save register
  mov  BP SP                        # Deallocate local+temp vars
  pop  BP                           # Restore old stack frame
  ret

  # END FUNCTION: printf() -----------------------------------------------


#
# string literals from file 'stdio.c'
#

_LC0:
  str "0123456789ABCDEF\0"
_LC1:
  str "65536\0"