mirror of https://gitlab.com/camelot/kickc.git
750 lines
35 KiB
Plaintext
750 lines
35 KiB
Plaintext
Inlined call vicSelectGfxBank::$0 = call toDd00(vicSelectGfxBank::gfx)
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Inlined call call __init
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Eliminating unused variable with no statement keyboard_matrix_read::$0
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Eliminating unused variable with no statement keyboard_key_pressed::$0
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Eliminating unused variable with no statement keyboard_key_pressed::$1
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CONTROL FLOW GRAPH SSA
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void keyboard_init()
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keyboard_init: scope:[keyboard_init] from main
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*((char *)CIA1+OFFSET_STRUCT_MOS6526_CIA_PORT_A_DDR) = $ff
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*((char *)CIA1+OFFSET_STRUCT_MOS6526_CIA_PORT_B_DDR) = 0
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to:keyboard_init::@return
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keyboard_init::@return: scope:[keyboard_init] from keyboard_init
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return
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to:@return
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char keyboard_matrix_read(char rowid)
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keyboard_matrix_read: scope:[keyboard_matrix_read] from keyboard_key_pressed
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keyboard_matrix_read::rowid#1 = phi( keyboard_key_pressed/keyboard_matrix_read::rowid#0 )
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*((char *)CIA1+OFFSET_STRUCT_MOS6526_CIA_PORT_A) = keyboard_matrix_row_bitmask[keyboard_matrix_read::rowid#1]
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keyboard_matrix_read::row_pressed_bits#0 = ~ *((char *)CIA1+OFFSET_STRUCT_MOS6526_CIA_PORT_B)
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keyboard_matrix_read::return#0 = keyboard_matrix_read::row_pressed_bits#0
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to:keyboard_matrix_read::@return
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keyboard_matrix_read::@return: scope:[keyboard_matrix_read] from keyboard_matrix_read
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keyboard_matrix_read::return#3 = phi( keyboard_matrix_read/keyboard_matrix_read::return#0 )
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keyboard_matrix_read::return#1 = keyboard_matrix_read::return#3
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return
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to:@return
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char keyboard_key_pressed(char key)
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keyboard_key_pressed: scope:[keyboard_key_pressed] from main::@3
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keyboard_key_pressed::key#1 = phi( main::@3/keyboard_key_pressed::key#0 )
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keyboard_key_pressed::colidx#0 = keyboard_key_pressed::key#1 & 7
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keyboard_key_pressed::rowidx#0 = keyboard_key_pressed::key#1 >> 3
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keyboard_matrix_read::rowid#0 = keyboard_key_pressed::rowidx#0
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call keyboard_matrix_read
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keyboard_matrix_read::return#2 = keyboard_matrix_read::return#1
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to:keyboard_key_pressed::@1
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keyboard_key_pressed::@1: scope:[keyboard_key_pressed] from keyboard_key_pressed
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keyboard_key_pressed::colidx#1 = phi( keyboard_key_pressed/keyboard_key_pressed::colidx#0 )
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keyboard_matrix_read::return#4 = phi( keyboard_key_pressed/keyboard_matrix_read::return#2 )
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keyboard_key_pressed::$2 = keyboard_matrix_read::return#4
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keyboard_key_pressed::$3 = keyboard_key_pressed::$2 & keyboard_matrix_col_bitmask[keyboard_key_pressed::colidx#1]
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keyboard_key_pressed::return#0 = keyboard_key_pressed::$3
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to:keyboard_key_pressed::@return
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keyboard_key_pressed::@return: scope:[keyboard_key_pressed] from keyboard_key_pressed::@1
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keyboard_key_pressed::return#3 = phi( keyboard_key_pressed::@1/keyboard_key_pressed::return#0 )
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keyboard_key_pressed::return#1 = keyboard_key_pressed::return#3
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return
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to:@return
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void main()
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main: scope:[main] from __start::@1
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call keyboard_init
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to:main::@6
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main::@6: scope:[main] from main
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to:main::@1
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main::@1: scope:[main] from main::@4 main::@5 main::@6
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if(true) goto main::@2
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to:main::@return
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main::@2: scope:[main] from main::@1 main::@2
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main::$1 = *RASTER != $ff
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if(main::$1) goto main::@2
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to:main::@3
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main::@3: scope:[main] from main::@2
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keyboard_key_pressed::key#0 = KEY_SPACE
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call keyboard_key_pressed
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keyboard_key_pressed::return#2 = keyboard_key_pressed::return#1
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to:main::@7
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main::@7: scope:[main] from main::@3
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keyboard_key_pressed::return#4 = phi( main::@3/keyboard_key_pressed::return#2 )
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main::$2 = keyboard_key_pressed::return#4
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main::$3 = main::$2 != 0
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if(main::$3) goto main::@5
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to:main::@4
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main::@5: scope:[main] from main::@7
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*BG_COLOR = GREEN
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to:main::@1
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main::@4: scope:[main] from main::@7
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*BG_COLOR = BLUE
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to:main::@1
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main::@return: scope:[main] from main::@1
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return
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to:@return
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void __start()
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__start: scope:[__start] from
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to:__start::__init1
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__start::__init1: scope:[__start] from __start
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to:__start::@1
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__start::@1: scope:[__start] from __start::__init1
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call main
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to:__start::@2
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__start::@2: scope:[__start] from __start::@1
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to:__start::@return
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__start::@return: scope:[__start] from __start::@2
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return
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to:@return
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SYMBOL TABLE SSA
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__constant char * const BG_COLOR = (char *)$d021
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__constant const char BLUE = 6
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__constant struct MOS6526_CIA * const CIA1 = (struct MOS6526_CIA *)$dc00
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__constant const char GREEN = 5
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__constant const char KEY_SPACE = $3c
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__constant char OFFSET_STRUCT_MOS6526_CIA_PORT_A = 0
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__constant char OFFSET_STRUCT_MOS6526_CIA_PORT_A_DDR = 2
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__constant char OFFSET_STRUCT_MOS6526_CIA_PORT_B = 1
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__constant char OFFSET_STRUCT_MOS6526_CIA_PORT_B_DDR = 3
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__constant char * const RASTER = (char *)$d012
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void __start()
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void keyboard_init()
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char keyboard_key_pressed(char key)
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char keyboard_key_pressed::$2
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char keyboard_key_pressed::$3
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char keyboard_key_pressed::colidx
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char keyboard_key_pressed::colidx#0
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char keyboard_key_pressed::colidx#1
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char keyboard_key_pressed::key
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char keyboard_key_pressed::key#0
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char keyboard_key_pressed::key#1
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char keyboard_key_pressed::return
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char keyboard_key_pressed::return#0
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char keyboard_key_pressed::return#1
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char keyboard_key_pressed::return#2
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char keyboard_key_pressed::return#3
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char keyboard_key_pressed::return#4
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char keyboard_key_pressed::rowidx
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char keyboard_key_pressed::rowidx#0
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__constant char keyboard_matrix_col_bitmask[8] = { 1, 2, 4, 8, $10, $20, $40, $80 }
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char keyboard_matrix_read(char rowid)
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char keyboard_matrix_read::return
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char keyboard_matrix_read::return#0
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char keyboard_matrix_read::return#1
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char keyboard_matrix_read::return#2
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char keyboard_matrix_read::return#3
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char keyboard_matrix_read::return#4
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char keyboard_matrix_read::row_pressed_bits
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char keyboard_matrix_read::row_pressed_bits#0
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char keyboard_matrix_read::rowid
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char keyboard_matrix_read::rowid#0
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char keyboard_matrix_read::rowid#1
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__constant char keyboard_matrix_row_bitmask[8] = { $fe, $fd, $fb, $f7, $ef, $df, $bf, $7f }
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void main()
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bool main::$1
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char main::$2
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bool main::$3
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Adding number conversion cast (unumber) $ff in *((char *)CIA1+OFFSET_STRUCT_MOS6526_CIA_PORT_A_DDR) = $ff
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Adding number conversion cast (unumber) 0 in *((char *)CIA1+OFFSET_STRUCT_MOS6526_CIA_PORT_B_DDR) = 0
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Adding number conversion cast (unumber) 7 in keyboard_key_pressed::colidx#0 = keyboard_key_pressed::key#1 & 7
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Adding number conversion cast (unumber) 3 in keyboard_key_pressed::rowidx#0 = keyboard_key_pressed::key#1 >> 3
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Adding number conversion cast (unumber) $ff in main::$1 = *RASTER != $ff
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Adding number conversion cast (unumber) 0 in main::$3 = main::$2 != 0
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Successful SSA optimization PassNAddNumberTypeConversions
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Inlining cast *((char *)CIA1+OFFSET_STRUCT_MOS6526_CIA_PORT_A_DDR) = (unumber)$ff
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Inlining cast *((char *)CIA1+OFFSET_STRUCT_MOS6526_CIA_PORT_B_DDR) = (unumber)0
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Successful SSA optimization Pass2InlineCast
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Simplifying constant pointer cast (char *) 53266
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Simplifying constant pointer cast (char *) 53281
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Simplifying constant pointer cast (struct MOS6526_CIA *) 56320
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Simplifying constant integer cast $ff
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Simplifying constant integer cast 0
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Simplifying constant integer cast 7
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Simplifying constant integer cast 3
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Simplifying constant integer cast $ff
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Simplifying constant integer cast 0
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Successful SSA optimization PassNCastSimplification
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Finalized unsigned number type (char) $ff
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Finalized unsigned number type (char) 0
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Finalized unsigned number type (char) 7
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Finalized unsigned number type (char) 3
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Finalized unsigned number type (char) $ff
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Finalized unsigned number type (char) 0
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Successful SSA optimization PassNFinalizeNumberTypeConversions
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Alias keyboard_matrix_read::return#0 = keyboard_matrix_read::row_pressed_bits#0 keyboard_matrix_read::return#3 keyboard_matrix_read::return#1
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Alias keyboard_matrix_read::return#2 = keyboard_matrix_read::return#4
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Alias keyboard_key_pressed::colidx#0 = keyboard_key_pressed::colidx#1
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Alias keyboard_key_pressed::return#0 = keyboard_key_pressed::$3 keyboard_key_pressed::return#3 keyboard_key_pressed::return#1
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Alias keyboard_key_pressed::return#2 = keyboard_key_pressed::return#4
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Successful SSA optimization Pass2AliasElimination
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Identical Phi Values keyboard_matrix_read::rowid#1 keyboard_matrix_read::rowid#0
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Identical Phi Values keyboard_key_pressed::key#1 keyboard_key_pressed::key#0
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Successful SSA optimization Pass2IdenticalPhiElimination
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Simple Condition main::$1 [19] if(*RASTER!=$ff) goto main::@2
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Simple Condition main::$3 [25] if(main::$2!=0) goto main::@5
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Successful SSA optimization Pass2ConditionalJumpSimplification
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Constant keyboard_key_pressed::key#0 = KEY_SPACE
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Successful SSA optimization Pass2ConstantIdentification
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if() condition always true - replacing block destination [17] if(true) goto main::@2
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Successful SSA optimization Pass2ConstantIfs
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Simplifying expression containing zero (char *)CIA1 in [4] *((char *)CIA1+OFFSET_STRUCT_MOS6526_CIA_PORT_A) = keyboard_matrix_row_bitmask[keyboard_matrix_read::rowid#0]
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Successful SSA optimization PassNSimplifyExpressionWithZero
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Removing unused block main::@return
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Successful SSA optimization Pass2EliminateUnusedBlocks
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Eliminating unused constant OFFSET_STRUCT_MOS6526_CIA_PORT_A
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Successful SSA optimization PassNEliminateUnusedVars
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Removing unused procedure __start
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Removing unused procedure block __start
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Removing unused procedure block __start::__init1
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Removing unused procedure block __start::@1
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Removing unused procedure block __start::@2
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Removing unused procedure block __start::@return
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Successful SSA optimization PassNEliminateEmptyStart
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Constant right-side identified [6] keyboard_key_pressed::colidx#0 = keyboard_key_pressed::key#0 & 7
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Constant right-side identified [7] keyboard_key_pressed::rowidx#0 = keyboard_key_pressed::key#0 >> 3
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Successful SSA optimization Pass2ConstantRValueConsolidation
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Constant keyboard_key_pressed::colidx#0 = keyboard_key_pressed::key#0&7
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Constant keyboard_key_pressed::rowidx#0 = keyboard_key_pressed::key#0>>3
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Successful SSA optimization Pass2ConstantIdentification
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Constant keyboard_matrix_read::rowid#0 = keyboard_key_pressed::rowidx#0
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Successful SSA optimization Pass2ConstantIdentification
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Constant inlined keyboard_key_pressed::key#0 = KEY_SPACE
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Constant inlined keyboard_matrix_read::rowid#0 = keyboard_key_pressed::rowidx#0
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Successful SSA optimization Pass2ConstantInlining
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Consolidated array index constant in *(keyboard_matrix_row_bitmask+keyboard_key_pressed::rowidx#0)
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Consolidated array index constant in *(keyboard_matrix_col_bitmask+keyboard_key_pressed::colidx#0)
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Successful SSA optimization Pass2ConstantAdditionElimination
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Finalized unsigned number type (char) 8
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Finalized unsigned number type (char) 8
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Successful SSA optimization PassNFinalizeNumberTypeConversions
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Adding NOP phi() at start of main
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Adding NOP phi() at start of main::@6
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Adding NOP phi() at start of main::@1
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Adding NOP phi() at start of main::@3
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Adding NOP phi() at start of keyboard_key_pressed
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CALL GRAPH
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Calls in [main] to keyboard_init:1 keyboard_key_pressed:6
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Calls in [keyboard_key_pressed] to keyboard_matrix_read:16
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Created 0 initial phi equivalence classes
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Coalesced down to 0 phi equivalence classes
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Culled Empty Block label main::@6
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Culled Empty Block label main::@1
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Renumbering block main::@2 to main::@1
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Renumbering block main::@3 to main::@2
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Renumbering block main::@4 to main::@3
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Renumbering block main::@5 to main::@4
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Renumbering block main::@7 to main::@5
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Adding NOP phi() at start of main
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Adding NOP phi() at start of main::@2
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Adding NOP phi() at start of keyboard_key_pressed
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FINAL CONTROL FLOW GRAPH
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void main()
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main: scope:[main] from
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[0] phi()
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[1] call keyboard_init
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to:main::@1
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main::@1: scope:[main] from main main::@1 main::@3 main::@4
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[2] if(*RASTER!=$ff) goto main::@1
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to:main::@2
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main::@2: scope:[main] from main::@1
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[3] phi()
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[4] call keyboard_key_pressed
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[5] keyboard_key_pressed::return#2 = keyboard_key_pressed::return#0
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to:main::@5
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main::@5: scope:[main] from main::@2
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[6] main::$2 = keyboard_key_pressed::return#2
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[7] if(main::$2!=0) goto main::@4
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to:main::@3
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main::@3: scope:[main] from main::@5
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[8] *BG_COLOR = BLUE
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to:main::@1
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main::@4: scope:[main] from main::@5
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[9] *BG_COLOR = GREEN
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to:main::@1
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void keyboard_init()
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keyboard_init: scope:[keyboard_init] from main
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[10] *((char *)CIA1+OFFSET_STRUCT_MOS6526_CIA_PORT_A_DDR) = $ff
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[11] *((char *)CIA1+OFFSET_STRUCT_MOS6526_CIA_PORT_B_DDR) = 0
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to:keyboard_init::@return
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keyboard_init::@return: scope:[keyboard_init] from keyboard_init
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[12] return
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to:@return
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char keyboard_key_pressed(char key)
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keyboard_key_pressed: scope:[keyboard_key_pressed] from main::@2
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[13] phi()
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[14] call keyboard_matrix_read
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[15] keyboard_matrix_read::return#2 = keyboard_matrix_read::return#0
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to:keyboard_key_pressed::@1
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keyboard_key_pressed::@1: scope:[keyboard_key_pressed] from keyboard_key_pressed
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[16] keyboard_key_pressed::$2 = keyboard_matrix_read::return#2
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[17] keyboard_key_pressed::return#0 = keyboard_key_pressed::$2 & *(keyboard_matrix_col_bitmask+keyboard_key_pressed::colidx#0)
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to:keyboard_key_pressed::@return
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keyboard_key_pressed::@return: scope:[keyboard_key_pressed] from keyboard_key_pressed::@1
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[18] return
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to:@return
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char keyboard_matrix_read(char rowid)
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keyboard_matrix_read: scope:[keyboard_matrix_read] from keyboard_key_pressed
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[19] *((char *)CIA1) = *(keyboard_matrix_row_bitmask+keyboard_key_pressed::rowidx#0)
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[20] keyboard_matrix_read::return#0 = ~ *((char *)CIA1+OFFSET_STRUCT_MOS6526_CIA_PORT_B)
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to:keyboard_matrix_read::@return
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keyboard_matrix_read::@return: scope:[keyboard_matrix_read] from keyboard_matrix_read
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[21] return
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to:@return
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VARIABLE REGISTER WEIGHTS
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void keyboard_init()
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char keyboard_key_pressed(char key)
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char keyboard_key_pressed::$2 // 202.0
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char keyboard_key_pressed::colidx
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char keyboard_key_pressed::key
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char keyboard_key_pressed::return
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char keyboard_key_pressed::return#0 // 37.33333333333333
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char keyboard_key_pressed::return#2 // 22.0
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char keyboard_key_pressed::rowidx
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char keyboard_matrix_read(char rowid)
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char keyboard_matrix_read::return
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char keyboard_matrix_read::return#0 // 367.33333333333337
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char keyboard_matrix_read::return#2 // 202.0
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char keyboard_matrix_read::row_pressed_bits
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char keyboard_matrix_read::rowid
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void main()
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char main::$2 // 22.0
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Initial phi equivalence classes
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Added variable keyboard_key_pressed::return#2 to live range equivalence class [ keyboard_key_pressed::return#2 ]
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Added variable main::$2 to live range equivalence class [ main::$2 ]
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Added variable keyboard_matrix_read::return#2 to live range equivalence class [ keyboard_matrix_read::return#2 ]
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Added variable keyboard_key_pressed::$2 to live range equivalence class [ keyboard_key_pressed::$2 ]
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Added variable keyboard_key_pressed::return#0 to live range equivalence class [ keyboard_key_pressed::return#0 ]
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Added variable keyboard_matrix_read::return#0 to live range equivalence class [ keyboard_matrix_read::return#0 ]
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Complete equivalence classes
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[ keyboard_key_pressed::return#2 ]
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[ main::$2 ]
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[ keyboard_matrix_read::return#2 ]
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[ keyboard_key_pressed::$2 ]
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[ keyboard_key_pressed::return#0 ]
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[ keyboard_matrix_read::return#0 ]
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Allocated zp[1]:2 [ keyboard_matrix_read::return#0 ]
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Allocated zp[1]:3 [ keyboard_matrix_read::return#2 ]
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Allocated zp[1]:4 [ keyboard_key_pressed::$2 ]
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Allocated zp[1]:5 [ keyboard_key_pressed::return#0 ]
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Allocated zp[1]:6 [ keyboard_key_pressed::return#2 ]
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Allocated zp[1]:7 [ main::$2 ]
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REGISTER UPLIFT POTENTIAL REGISTERS
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Statement [2] if(*RASTER!=$ff) goto main::@1 [ ] ( [ ] { } ) always clobbers reg byte a
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Statement [8] *BG_COLOR = BLUE [ ] ( [ ] { } ) always clobbers reg byte a
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Statement [9] *BG_COLOR = GREEN [ ] ( [ ] { } ) always clobbers reg byte a
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Statement [10] *((char *)CIA1+OFFSET_STRUCT_MOS6526_CIA_PORT_A_DDR) = $ff [ ] ( keyboard_init:1 [ ] { } ) always clobbers reg byte a
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Statement [11] *((char *)CIA1+OFFSET_STRUCT_MOS6526_CIA_PORT_B_DDR) = 0 [ ] ( keyboard_init:1 [ ] { } ) always clobbers reg byte a
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Statement [19] *((char *)CIA1) = *(keyboard_matrix_row_bitmask+keyboard_key_pressed::rowidx#0) [ ] ( keyboard_key_pressed:4::keyboard_matrix_read:14 [ ] { { keyboard_key_pressed::return#0 = keyboard_key_pressed::return#2 } { keyboard_matrix_read::return#0 = keyboard_matrix_read::return#2 } } ) always clobbers reg byte a
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Statement [20] keyboard_matrix_read::return#0 = ~ *((char *)CIA1+OFFSET_STRUCT_MOS6526_CIA_PORT_B) [ keyboard_matrix_read::return#0 ] ( keyboard_key_pressed:4::keyboard_matrix_read:14 [ keyboard_matrix_read::return#0 ] { { keyboard_key_pressed::return#0 = keyboard_key_pressed::return#2 } { keyboard_matrix_read::return#0 = keyboard_matrix_read::return#2 } } ) always clobbers reg byte a
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Potential registers zp[1]:6 [ keyboard_key_pressed::return#2 ] : zp[1]:6 , reg byte a , reg byte x , reg byte y ,
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Potential registers zp[1]:7 [ main::$2 ] : zp[1]:7 , reg byte a , reg byte x , reg byte y ,
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Potential registers zp[1]:3 [ keyboard_matrix_read::return#2 ] : zp[1]:3 , reg byte a , reg byte x , reg byte y ,
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Potential registers zp[1]:4 [ keyboard_key_pressed::$2 ] : zp[1]:4 , reg byte a , reg byte x , reg byte y ,
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Potential registers zp[1]:5 [ keyboard_key_pressed::return#0 ] : zp[1]:5 , reg byte a , reg byte x , reg byte y ,
|
|
Potential registers zp[1]:2 [ keyboard_matrix_read::return#0 ] : zp[1]:2 , reg byte a , reg byte x , reg byte y ,
|
|
|
|
REGISTER UPLIFT SCOPES
|
|
Uplift Scope [keyboard_matrix_read] 367.33: zp[1]:2 [ keyboard_matrix_read::return#0 ] 202: zp[1]:3 [ keyboard_matrix_read::return#2 ]
|
|
Uplift Scope [keyboard_key_pressed] 202: zp[1]:4 [ keyboard_key_pressed::$2 ] 37.33: zp[1]:5 [ keyboard_key_pressed::return#0 ] 22: zp[1]:6 [ keyboard_key_pressed::return#2 ]
|
|
Uplift Scope [main] 22: zp[1]:7 [ main::$2 ]
|
|
Uplift Scope [keyboard_init]
|
|
Uplift Scope [MOS6526_CIA]
|
|
Uplift Scope [MOS6569_VICII]
|
|
Uplift Scope [MOS6581_SID]
|
|
Uplift Scope []
|
|
|
|
Uplifting [keyboard_matrix_read] best 1385 combination reg byte a [ keyboard_matrix_read::return#0 ] reg byte a [ keyboard_matrix_read::return#2 ]
|
|
Uplifting [keyboard_key_pressed] best 1286 combination reg byte a [ keyboard_key_pressed::$2 ] reg byte a [ keyboard_key_pressed::return#0 ] reg byte a [ keyboard_key_pressed::return#2 ]
|
|
Uplifting [main] best 1246 combination reg byte a [ main::$2 ]
|
|
Uplifting [keyboard_init] best 1246 combination
|
|
Uplifting [MOS6526_CIA] best 1246 combination
|
|
Uplifting [MOS6569_VICII] best 1246 combination
|
|
Uplifting [MOS6581_SID] best 1246 combination
|
|
Uplifting [] best 1246 combination
|
|
|
|
ASSEMBLER BEFORE OPTIMIZATION
|
|
// File Comments
|
|
// Test keyboard input - test the space bar
|
|
/// @file
|
|
/// Simple Keyboard Input Library
|
|
///
|
|
/// C64 Keyboard Matrix Reference - from http://codebase64.org/doku.php?id=base:reading_the_keyboard
|
|
/// Keyboard Codes are %00rrrccc, where rrr is the row ID (0-7) and ccc is the column ID (0-7)
|
|
/// +----+----------------------+-------------------------------------------------------------------------------------------------------+
|
|
/// | | Write | Read $dc01 (C64 screen code in parenthesis): |
|
|
/// |row:| $dc00: row bits +------------+------------+------------+------------+------------+------------+------------+------------+
|
|
/// | | | BIT 7 | BIT 6 | BIT 5 | BIT 4 | BIT 3 | BIT 2 | BIT 1 | BIT 0 |
|
|
/// +----+----------------------+------------+------------+------------+------------+------------+------------+------------+------------+
|
|
/// |0. | #%11111110 (254/$fe) | DOWN ($ )| F5 ($ )| F3 ($ )| F1 ($ )| F7 ($ )| RIGHT ($ )| RETURN($ )|DELETE ($ )|
|
|
/// |1. | #%11111101 (253/$fd) |LEFT-SH($ )| e ($05)| s ($13)| z ($1a)| 4 ($34)| a ($01)| w ($17)| 3 ($33)|
|
|
/// |2. | #%11111011 (251/$fb) | x ($18)| t ($14)| f ($06)| c ($03)| 6 ($36)| d ($04)| r ($12)| 5 ($35)|
|
|
/// |3. | #%11110111 (247/$f7) | v ($16)| u ($15)| h ($08)| b ($02)| 8 ($38)| g ($07)| y ($19)| 7 ($37)|
|
|
/// |4. | #%11101111 (239/$ef) | n ($0e)| o ($0f)| k ($0b)| m ($0d)| 0 ($30)| j ($0a)| i ($09)| 9 ($39)|
|
|
/// |5. | #%11011111 (223/$df) | , ($2c)| @ ($00)| : ($3a)| . ($2e)| - ($2d)| l ($0c)| p ($10)| + ($2b)|
|
|
/// |6. | #%10111111 (191/$bf) | / ($2f)| ^ ($1e)| = ($3d)|RGHT-SH($ )| HOME ($ )| ; ($3b)| * ($2a)| £ ($1c)|
|
|
/// |7. | #%01111111 (127/$7f) | STOP ($ )| q ($11)|COMMODR($ )| SPACE ($20)| 2 ($32)|CONTROL($ )| <- ($1f)| 1 ($31)|
|
|
/// +----+----------------------+------------+------------+------------+------------+------------+------------+------------+------------+
|
|
// Upstart
|
|
// Commodore 64 PRG executable file
|
|
.file [name="test-keyboard-space.prg", type="prg", segments="Program"]
|
|
.segmentdef Program [segments="Basic, Code, Data"]
|
|
.segmentdef Basic [start=$0801]
|
|
.segmentdef Code [start=$80d]
|
|
.segmentdef Data [startAfter="Code"]
|
|
.segment Basic
|
|
:BasicUpstart(main)
|
|
// Global Constants & labels
|
|
.const KEY_SPACE = $3c
|
|
.const GREEN = 5
|
|
.const BLUE = 6
|
|
.const OFFSET_STRUCT_MOS6526_CIA_PORT_A_DDR = 2
|
|
.const OFFSET_STRUCT_MOS6526_CIA_PORT_B_DDR = 3
|
|
.const OFFSET_STRUCT_MOS6526_CIA_PORT_B = 1
|
|
/// $D012 RASTER Raster counter
|
|
.label RASTER = $d012
|
|
/// $D021 Background Color 0
|
|
.label BG_COLOR = $d021
|
|
/// The CIA#1: keyboard matrix, joystick #1/#2
|
|
.label CIA1 = $dc00
|
|
.segment Code
|
|
// main
|
|
main: {
|
|
// [1] call keyboard_init
|
|
jsr keyboard_init
|
|
jmp __b1
|
|
// main::@1
|
|
__b1:
|
|
// [2] if(*RASTER!=$ff) goto main::@1 -- _deref_pbuc1_neq_vbuc2_then_la1
|
|
lda #$ff
|
|
cmp RASTER
|
|
bne __b1
|
|
// [3] phi from main::@1 to main::@2 [phi:main::@1->main::@2]
|
|
__b2_from___b1:
|
|
jmp __b2
|
|
// main::@2
|
|
__b2:
|
|
// [4] call keyboard_key_pressed
|
|
// [13] phi from main::@2 to keyboard_key_pressed [phi:main::@2->keyboard_key_pressed]
|
|
keyboard_key_pressed_from___b2:
|
|
jsr keyboard_key_pressed
|
|
// [5] keyboard_key_pressed::return#2 = keyboard_key_pressed::return#0
|
|
jmp __b5
|
|
// main::@5
|
|
__b5:
|
|
// [6] main::$2 = keyboard_key_pressed::return#2
|
|
// [7] if(main::$2!=0) goto main::@4 -- vbuaa_neq_0_then_la1
|
|
cmp #0
|
|
bne __b4
|
|
jmp __b3
|
|
// main::@3
|
|
__b3:
|
|
// [8] *BG_COLOR = BLUE -- _deref_pbuc1=vbuc2
|
|
lda #BLUE
|
|
sta BG_COLOR
|
|
jmp __b1
|
|
// main::@4
|
|
__b4:
|
|
// [9] *BG_COLOR = GREEN -- _deref_pbuc1=vbuc2
|
|
lda #GREEN
|
|
sta BG_COLOR
|
|
jmp __b1
|
|
}
|
|
// keyboard_init
|
|
// Initialize keyboard reading by setting CIA#1 Data Direction Registers
|
|
keyboard_init: {
|
|
// [10] *((char *)CIA1+OFFSET_STRUCT_MOS6526_CIA_PORT_A_DDR) = $ff -- _deref_pbuc1=vbuc2
|
|
// Keyboard Matrix Columns Write Mode
|
|
lda #$ff
|
|
sta CIA1+OFFSET_STRUCT_MOS6526_CIA_PORT_A_DDR
|
|
// [11] *((char *)CIA1+OFFSET_STRUCT_MOS6526_CIA_PORT_B_DDR) = 0 -- _deref_pbuc1=vbuc2
|
|
// Keyboard Matrix Columns Read Mode
|
|
lda #0
|
|
sta CIA1+OFFSET_STRUCT_MOS6526_CIA_PORT_B_DDR
|
|
jmp __breturn
|
|
// keyboard_init::@return
|
|
__breturn:
|
|
// [12] return
|
|
rts
|
|
}
|
|
// keyboard_key_pressed
|
|
// Determines whether a specific key is currently pressed by accessing the matrix directly
|
|
// The key is a keyboard code defined from the keyboard matrix by %00rrrccc, where rrr is the row ID (0-7) and ccc is the column ID (0-7)
|
|
// All keys exist as as KEY_XXX constants.
|
|
// Returns zero if the key is not pressed and a non-zero value if the key is currently pressed
|
|
// __register(A) char keyboard_key_pressed(char key)
|
|
keyboard_key_pressed: {
|
|
.const colidx = KEY_SPACE&7
|
|
.label rowidx = KEY_SPACE>>3
|
|
// [14] call keyboard_matrix_read
|
|
jsr keyboard_matrix_read
|
|
// [15] keyboard_matrix_read::return#2 = keyboard_matrix_read::return#0
|
|
jmp __b1
|
|
// keyboard_key_pressed::@1
|
|
__b1:
|
|
// [16] keyboard_key_pressed::$2 = keyboard_matrix_read::return#2
|
|
// [17] keyboard_key_pressed::return#0 = keyboard_key_pressed::$2 & *(keyboard_matrix_col_bitmask+keyboard_key_pressed::colidx#0) -- vbuaa=vbuaa_band__deref_pbuc1
|
|
and keyboard_matrix_col_bitmask+colidx
|
|
jmp __breturn
|
|
// keyboard_key_pressed::@return
|
|
__breturn:
|
|
// [18] return
|
|
rts
|
|
}
|
|
// keyboard_matrix_read
|
|
// Read a single row of the keyboard matrix
|
|
// The row ID (0-7) of the keyboard matrix row to read. See the C64 key matrix for row IDs.
|
|
// Returns the keys pressed on the row as bits according to the C64 key matrix.
|
|
// Notice: If the C64 normal interrupt is still running it will occasionally interrupt right between the read & write
|
|
// leading to erroneous readings. You must disable the normal interrupt or sei/cli around calls to the keyboard matrix reader.
|
|
// __register(A) char keyboard_matrix_read(char rowid)
|
|
keyboard_matrix_read: {
|
|
// [19] *((char *)CIA1) = *(keyboard_matrix_row_bitmask+keyboard_key_pressed::rowidx#0) -- _deref_pbuc1=_deref_pbuc2
|
|
lda keyboard_matrix_row_bitmask+keyboard_key_pressed.rowidx
|
|
sta CIA1
|
|
// [20] keyboard_matrix_read::return#0 = ~ *((char *)CIA1+OFFSET_STRUCT_MOS6526_CIA_PORT_B) -- vbuaa=_bnot__deref_pbuc1
|
|
lda CIA1+OFFSET_STRUCT_MOS6526_CIA_PORT_B
|
|
eor #$ff
|
|
jmp __breturn
|
|
// keyboard_matrix_read::@return
|
|
__breturn:
|
|
// [21] return
|
|
rts
|
|
}
|
|
// File Data
|
|
.segment Data
|
|
// Keyboard row bitmask as expected by CIA#1 Port A when reading a specific keyboard matrix row (rows are numbered 0-7)
|
|
keyboard_matrix_row_bitmask: .byte $fe, $fd, $fb, $f7, $ef, $df, $bf, $7f
|
|
// Keyboard matrix column bitmasks for a specific keybooard matrix column when reading the keyboard. (columns are numbered 0-7)
|
|
keyboard_matrix_col_bitmask: .byte 1, 2, 4, 8, $10, $20, $40, $80
|
|
|
|
ASSEMBLER OPTIMIZATIONS
|
|
Removing instruction jmp __b1
|
|
Removing instruction jmp __b2
|
|
Removing instruction jmp __b5
|
|
Removing instruction jmp __b3
|
|
Removing instruction jmp __breturn
|
|
Removing instruction jmp __b1
|
|
Removing instruction jmp __breturn
|
|
Removing instruction jmp __breturn
|
|
Succesful ASM optimization Pass5NextJumpElimination
|
|
Removing instruction __b2_from___b1:
|
|
Removing instruction keyboard_key_pressed_from___b2:
|
|
Succesful ASM optimization Pass5RedundantLabelElimination
|
|
Removing instruction __b2:
|
|
Removing instruction __b5:
|
|
Removing instruction __b3:
|
|
Removing instruction __breturn:
|
|
Removing instruction __b1:
|
|
Removing instruction __breturn:
|
|
Removing instruction __breturn:
|
|
Succesful ASM optimization Pass5UnusedLabelElimination
|
|
|
|
FINAL SYMBOL TABLE
|
|
__constant char * const BG_COLOR = (char *) 53281
|
|
__constant const char BLUE = 6
|
|
__constant struct MOS6526_CIA * const CIA1 = (struct MOS6526_CIA *) 56320
|
|
__constant const char GREEN = 5
|
|
__constant const char KEY_SPACE = $3c
|
|
__constant char OFFSET_STRUCT_MOS6526_CIA_PORT_A_DDR = 2
|
|
__constant char OFFSET_STRUCT_MOS6526_CIA_PORT_B = 1
|
|
__constant char OFFSET_STRUCT_MOS6526_CIA_PORT_B_DDR = 3
|
|
__constant char * const RASTER = (char *) 53266
|
|
void keyboard_init()
|
|
char keyboard_key_pressed(char key)
|
|
char keyboard_key_pressed::$2 // reg byte a 202.0
|
|
char keyboard_key_pressed::colidx
|
|
__constant char keyboard_key_pressed::colidx#0 = KEY_SPACE&7 // colidx
|
|
char keyboard_key_pressed::key
|
|
char keyboard_key_pressed::return
|
|
char keyboard_key_pressed::return#0 // reg byte a 37.33333333333333
|
|
char keyboard_key_pressed::return#2 // reg byte a 22.0
|
|
char keyboard_key_pressed::rowidx
|
|
__constant char keyboard_key_pressed::rowidx#0 = KEY_SPACE>>3 // rowidx
|
|
__constant char keyboard_matrix_col_bitmask[8] = { 1, 2, 4, 8, $10, $20, $40, $80 }
|
|
char keyboard_matrix_read(char rowid)
|
|
char keyboard_matrix_read::return
|
|
char keyboard_matrix_read::return#0 // reg byte a 367.33333333333337
|
|
char keyboard_matrix_read::return#2 // reg byte a 202.0
|
|
char keyboard_matrix_read::row_pressed_bits
|
|
char keyboard_matrix_read::rowid
|
|
__constant char keyboard_matrix_row_bitmask[8] = { $fe, $fd, $fb, $f7, $ef, $df, $bf, $7f }
|
|
void main()
|
|
char main::$2 // reg byte a 22.0
|
|
|
|
reg byte a [ keyboard_key_pressed::return#2 ]
|
|
reg byte a [ main::$2 ]
|
|
reg byte a [ keyboard_matrix_read::return#2 ]
|
|
reg byte a [ keyboard_key_pressed::$2 ]
|
|
reg byte a [ keyboard_key_pressed::return#0 ]
|
|
reg byte a [ keyboard_matrix_read::return#0 ]
|
|
|
|
|
|
FINAL ASSEMBLER
|
|
Score: 1141
|
|
|
|
// File Comments
|
|
// Test keyboard input - test the space bar
|
|
/// @file
|
|
/// Simple Keyboard Input Library
|
|
///
|
|
/// C64 Keyboard Matrix Reference - from http://codebase64.org/doku.php?id=base:reading_the_keyboard
|
|
/// Keyboard Codes are %00rrrccc, where rrr is the row ID (0-7) and ccc is the column ID (0-7)
|
|
/// +----+----------------------+-------------------------------------------------------------------------------------------------------+
|
|
/// | | Write | Read $dc01 (C64 screen code in parenthesis): |
|
|
/// |row:| $dc00: row bits +------------+------------+------------+------------+------------+------------+------------+------------+
|
|
/// | | | BIT 7 | BIT 6 | BIT 5 | BIT 4 | BIT 3 | BIT 2 | BIT 1 | BIT 0 |
|
|
/// +----+----------------------+------------+------------+------------+------------+------------+------------+------------+------------+
|
|
/// |0. | #%11111110 (254/$fe) | DOWN ($ )| F5 ($ )| F3 ($ )| F1 ($ )| F7 ($ )| RIGHT ($ )| RETURN($ )|DELETE ($ )|
|
|
/// |1. | #%11111101 (253/$fd) |LEFT-SH($ )| e ($05)| s ($13)| z ($1a)| 4 ($34)| a ($01)| w ($17)| 3 ($33)|
|
|
/// |2. | #%11111011 (251/$fb) | x ($18)| t ($14)| f ($06)| c ($03)| 6 ($36)| d ($04)| r ($12)| 5 ($35)|
|
|
/// |3. | #%11110111 (247/$f7) | v ($16)| u ($15)| h ($08)| b ($02)| 8 ($38)| g ($07)| y ($19)| 7 ($37)|
|
|
/// |4. | #%11101111 (239/$ef) | n ($0e)| o ($0f)| k ($0b)| m ($0d)| 0 ($30)| j ($0a)| i ($09)| 9 ($39)|
|
|
/// |5. | #%11011111 (223/$df) | , ($2c)| @ ($00)| : ($3a)| . ($2e)| - ($2d)| l ($0c)| p ($10)| + ($2b)|
|
|
/// |6. | #%10111111 (191/$bf) | / ($2f)| ^ ($1e)| = ($3d)|RGHT-SH($ )| HOME ($ )| ; ($3b)| * ($2a)| £ ($1c)|
|
|
/// |7. | #%01111111 (127/$7f) | STOP ($ )| q ($11)|COMMODR($ )| SPACE ($20)| 2 ($32)|CONTROL($ )| <- ($1f)| 1 ($31)|
|
|
/// +----+----------------------+------------+------------+------------+------------+------------+------------+------------+------------+
|
|
// Upstart
|
|
// Commodore 64 PRG executable file
|
|
.file [name="test-keyboard-space.prg", type="prg", segments="Program"]
|
|
.segmentdef Program [segments="Basic, Code, Data"]
|
|
.segmentdef Basic [start=$0801]
|
|
.segmentdef Code [start=$80d]
|
|
.segmentdef Data [startAfter="Code"]
|
|
.segment Basic
|
|
:BasicUpstart(main)
|
|
// Global Constants & labels
|
|
.const KEY_SPACE = $3c
|
|
.const GREEN = 5
|
|
.const BLUE = 6
|
|
.const OFFSET_STRUCT_MOS6526_CIA_PORT_A_DDR = 2
|
|
.const OFFSET_STRUCT_MOS6526_CIA_PORT_B_DDR = 3
|
|
.const OFFSET_STRUCT_MOS6526_CIA_PORT_B = 1
|
|
/// $D012 RASTER Raster counter
|
|
.label RASTER = $d012
|
|
/// $D021 Background Color 0
|
|
.label BG_COLOR = $d021
|
|
/// The CIA#1: keyboard matrix, joystick #1/#2
|
|
.label CIA1 = $dc00
|
|
.segment Code
|
|
// main
|
|
main: {
|
|
// keyboard_init()
|
|
// [1] call keyboard_init
|
|
jsr keyboard_init
|
|
// main::@1
|
|
__b1:
|
|
// while (*RASTER!=$ff)
|
|
// [2] if(*RASTER!=$ff) goto main::@1 -- _deref_pbuc1_neq_vbuc2_then_la1
|
|
lda #$ff
|
|
cmp RASTER
|
|
bne __b1
|
|
// [3] phi from main::@1 to main::@2 [phi:main::@1->main::@2]
|
|
// main::@2
|
|
// keyboard_key_pressed(KEY_SPACE)
|
|
// [4] call keyboard_key_pressed
|
|
// [13] phi from main::@2 to keyboard_key_pressed [phi:main::@2->keyboard_key_pressed]
|
|
jsr keyboard_key_pressed
|
|
// keyboard_key_pressed(KEY_SPACE)
|
|
// [5] keyboard_key_pressed::return#2 = keyboard_key_pressed::return#0
|
|
// main::@5
|
|
// [6] main::$2 = keyboard_key_pressed::return#2
|
|
// if(keyboard_key_pressed(KEY_SPACE)!=0)
|
|
// [7] if(main::$2!=0) goto main::@4 -- vbuaa_neq_0_then_la1
|
|
cmp #0
|
|
bne __b4
|
|
// main::@3
|
|
// *BG_COLOR = BLUE
|
|
// [8] *BG_COLOR = BLUE -- _deref_pbuc1=vbuc2
|
|
lda #BLUE
|
|
sta BG_COLOR
|
|
jmp __b1
|
|
// main::@4
|
|
__b4:
|
|
// *BG_COLOR = GREEN
|
|
// [9] *BG_COLOR = GREEN -- _deref_pbuc1=vbuc2
|
|
lda #GREEN
|
|
sta BG_COLOR
|
|
jmp __b1
|
|
}
|
|
// keyboard_init
|
|
// Initialize keyboard reading by setting CIA#1 Data Direction Registers
|
|
keyboard_init: {
|
|
// CIA1->PORT_A_DDR = 0xff
|
|
// [10] *((char *)CIA1+OFFSET_STRUCT_MOS6526_CIA_PORT_A_DDR) = $ff -- _deref_pbuc1=vbuc2
|
|
// Keyboard Matrix Columns Write Mode
|
|
lda #$ff
|
|
sta CIA1+OFFSET_STRUCT_MOS6526_CIA_PORT_A_DDR
|
|
// CIA1->PORT_B_DDR = 0x00
|
|
// [11] *((char *)CIA1+OFFSET_STRUCT_MOS6526_CIA_PORT_B_DDR) = 0 -- _deref_pbuc1=vbuc2
|
|
// Keyboard Matrix Columns Read Mode
|
|
lda #0
|
|
sta CIA1+OFFSET_STRUCT_MOS6526_CIA_PORT_B_DDR
|
|
// keyboard_init::@return
|
|
// }
|
|
// [12] return
|
|
rts
|
|
}
|
|
// keyboard_key_pressed
|
|
// Determines whether a specific key is currently pressed by accessing the matrix directly
|
|
// The key is a keyboard code defined from the keyboard matrix by %00rrrccc, where rrr is the row ID (0-7) and ccc is the column ID (0-7)
|
|
// All keys exist as as KEY_XXX constants.
|
|
// Returns zero if the key is not pressed and a non-zero value if the key is currently pressed
|
|
// __register(A) char keyboard_key_pressed(char key)
|
|
keyboard_key_pressed: {
|
|
.const colidx = KEY_SPACE&7
|
|
.label rowidx = KEY_SPACE>>3
|
|
// keyboard_matrix_read(rowidx)
|
|
// [14] call keyboard_matrix_read
|
|
jsr keyboard_matrix_read
|
|
// [15] keyboard_matrix_read::return#2 = keyboard_matrix_read::return#0
|
|
// keyboard_key_pressed::@1
|
|
// [16] keyboard_key_pressed::$2 = keyboard_matrix_read::return#2
|
|
// keyboard_matrix_read(rowidx) & keyboard_matrix_col_bitmask[colidx]
|
|
// [17] keyboard_key_pressed::return#0 = keyboard_key_pressed::$2 & *(keyboard_matrix_col_bitmask+keyboard_key_pressed::colidx#0) -- vbuaa=vbuaa_band__deref_pbuc1
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and keyboard_matrix_col_bitmask+colidx
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// keyboard_key_pressed::@return
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// }
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// [18] return
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rts
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}
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// keyboard_matrix_read
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// Read a single row of the keyboard matrix
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// The row ID (0-7) of the keyboard matrix row to read. See the C64 key matrix for row IDs.
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// Returns the keys pressed on the row as bits according to the C64 key matrix.
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// Notice: If the C64 normal interrupt is still running it will occasionally interrupt right between the read & write
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// leading to erroneous readings. You must disable the normal interrupt or sei/cli around calls to the keyboard matrix reader.
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// __register(A) char keyboard_matrix_read(char rowid)
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keyboard_matrix_read: {
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// CIA1->PORT_A = keyboard_matrix_row_bitmask[rowid]
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// [19] *((char *)CIA1) = *(keyboard_matrix_row_bitmask+keyboard_key_pressed::rowidx#0) -- _deref_pbuc1=_deref_pbuc2
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lda keyboard_matrix_row_bitmask+keyboard_key_pressed.rowidx
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sta CIA1
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// char row_pressed_bits = ~CIA1->PORT_B
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// [20] keyboard_matrix_read::return#0 = ~ *((char *)CIA1+OFFSET_STRUCT_MOS6526_CIA_PORT_B) -- vbuaa=_bnot__deref_pbuc1
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lda CIA1+OFFSET_STRUCT_MOS6526_CIA_PORT_B
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eor #$ff
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// keyboard_matrix_read::@return
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// }
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// [21] return
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rts
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}
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// File Data
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.segment Data
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// Keyboard row bitmask as expected by CIA#1 Port A when reading a specific keyboard matrix row (rows are numbered 0-7)
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keyboard_matrix_row_bitmask: .byte $fe, $fd, $fb, $f7, $ef, $df, $bf, $7f
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// Keyboard matrix column bitmasks for a specific keybooard matrix column when reading the keyboard. (columns are numbered 0-7)
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keyboard_matrix_col_bitmask: .byte 1, 2, 4, 8, $10, $20, $40, $80
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