reduce stage0_monitor size by 6 bytes (put often used values in regs)
This commit is contained in:
Dmitry Petukhov
parent
ecf9194374
commit
c9232a21c7
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@ -15,20 +15,25 @@
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## along with stage0. If not, see <http://www.gnu.org/licenses/>.
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# :start ; offset = 0
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0D00003B # TRUE R11 ; Our toggle
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E0002D2D0600 # LOADUI R13 0x600 ; Where we are starting our Stack
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0D00003C # TRUE R12 ; Our toggle, set to -1 (0xFFFFFFFF)
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# ;; Prepare often-used values that will be held in registers
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090001AC # ABS R10 R12 ; Set R10 to 1
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E0002D2B1100 # LOADUI R11 0x1100 ; R11 will hold 0x1100
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090004DB # COPY R13 R11 ; Stack will start at 0x1100
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# ;; R14 will be storing our condition
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0D00002F # FALSE R15 ; Our holder
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# ;; Prep TAPE_01
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E0002D201100 # LOADUI R0 0x1100
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0900040B # COPY R0 R11 ; 0x1100
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42100001 # FOPEN_WRITE
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# ;; Prep TAPE_02
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E0002D201101 # LOADUI R0 0x1101
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050210BA # OR R0 R11 R10 ; 0x1101
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42100001 # FOPEN_WRITE
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# :loop ; offset = 22
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# :loop ; offset = 26
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0D000021 # FALSE R1 ; Read from tty
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42100100 # FGETC ; Read a Char
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E000A030000d # CMPSKIPI.NE R0 13 ; Replace all CR
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@ -36,44 +41,47 @@ E0002D20000a # LOADUI R0 10 ; WIth LF
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42100200 # FPUTC ; Display the Char to User
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# ;; Check for Ctrl-D
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E000A0300004 # CMPSKIPI.NE R0 4
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3C00010e # JUMP @finish
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3C000108 # JUMP @finish
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# ;; Check for EOF
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E0002CC00108 # JUMP.NP R0 @finish
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E0002CC00102 # JUMP.NP R0 @finish
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# ;; Write out unprocessed byte
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E0002D211101 # LOADUI R1 0x1101 ; Write to TAPE_02
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050211BA # OR R1 R11 R10 ; Write to TAPE_02
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42100200 # FPUTC ; Print the Char
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# ;; Convert byte to nybble
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E0002D0D003c # CALLI R13 @hex ; Convert it
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E0002D0D003a # CALLI R13 @hex ; Convert it
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# ;; Get another byte if nonhex
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E0002CC0ffc2 # JUMP.NP R0 @loop ; Don't use nonhex chars
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E0002CC0ffc4 # JUMP.NP R0 @loop ; Don't use nonhex chars
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# ;; Deal with the case of second nybble
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E0002C9B000e # JUMP.Z R11 @second_nybble ; Jump if toggled
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E0002C9C000e # JUMP.Z R12 @second_nybble ; Jump if toggled
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# ;; Process first byte of pair
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E100B0F0000f # ANDI R15 R0 0x0F ; Store First nibble
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0D00002B # FALSE R11 ; Flip the toggle
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3C00ffae # JUMP @loop
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0D00002C # FALSE R12 ; Flip the toggle
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3C00ffb0 # JUMP @loop
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# ;; Combined second nybble in pair with first
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# :second_nybble ; offset = 74
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# :second_nybble ; offset = 76
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E0002D5F0004 # SL0I R15 4 ; Shift our first nibble
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E100B000000f # ANDI R0 R0 0x0F ; Mask out top
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0500000F # ADD R0 R0 R15 ; Combine nibbles
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# ;; Writeout and prepare for next cycle
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0D00003B # TRUE R11 ; Flip the toggle
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E0002D211100 # LOADUI R1 0x1100 ; Write the combined byte
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42100200 # FPUTC ; To TAPE_01
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3C00ff8c # JUMP @loop ; Try to get more bytes
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0D00003C # TRUE R12 ; Flip the toggle
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# ; Write the combined byte
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0900041B # COPY R1 R11 ; To TAPE_01
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42100200 # FPUTC
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3C00ff90 # JUMP @loop ; Try to get more bytes
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# :hex ; offset = 96
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# ;; Deal with line comments starting with #
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E1001FE00023 # CMPUI R14 R0 35
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E0002C5E007e # JUMP.E R14 @ascii_comment
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@ -107,9 +115,9 @@ E1001FE00066 # CMPUI R14 R0 102
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E0002C7E000e # JUMP.LE R14 @ascii_low
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# ;; Ignore the rest
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3C00001e # JUMP @ascii_other
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3C00001e # JUMP @ascii_other
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# :ascii_num ; offset = FA
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# :ascii_num ; offset = fa
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E10011000030 # SUBUI R0 R0 48
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0D01001D # RET R13
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@ -117,7 +125,7 @@ E10011000030 # SUBUI R0 R0 48
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E10011000057 # SUBUI R0 R0 87
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0D01001D # RET R13
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# :ascii_high ; offset = 102
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# :ascii_high ; offset = 10e
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E10011000037 # SUBUI R0 R0 55
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0D01001D # RET R13
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@ -132,14 +140,14 @@ E000A030000d # CMPSKIPI.NE R0 13 ; Replace all CR
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E0002D20000a # LOADUI R0 10 ; WIth LF
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42100200 # FPUTC ; Let the user see it
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E1001FE0000a # CMPUI R14 R0 10 ; Stop at the end of line
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E0002D211101 # LOADUI R1 0x1101 ; Write to TAPE_02
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050211BA # OR R1 R11 R10 ; Write to TAPE_02
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42100200 # FPUTC ; The char we just read
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E0002C6Effd2 # JUMP.NE R14 @ascii_comment ; Otherwise keep looping
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3C00ffc6 # JUMP @ascii_other
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E0002C6Effd4 # JUMP.NE R14 @ascii_comment ; Otherwise keep looping
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3C00ffc8 # JUMP @ascii_other
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# :finish ; offset = 152
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E0002D201100 # LOADUI R0 0x1100 ; Close TAPE_01
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# :finish ; offset = 150
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0900040B # COPY R0 R11 ; Close TAPE_01
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42100002 # FCLOSE
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E0002D201101 # LOADUI R0 0x1101 ; Close TAPE_02
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050210BA # OR R0 R11 R10 ; Close TAPE_02
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42100002 # FCLOSE
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FFFFFFFF # HALT
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@ -15,17 +15,22 @@
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; along with stage0. If not, see <http://www.gnu.org/licenses/>.
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:start
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TRUE R11 ; Our toggle
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LOADUI R13 0x600 ; Where we are starting our Stack
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TRUE R12 ; Our toggle, set to -1 (0xFFFFFFFF)
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;; Prepare often-used values that will be held in registers
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ABS R10 R12 ; Set R10 to 1
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LOADUI R11 0x1100 ; R11 will hold 0x1100
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COPY R13 R11 ; Stack will start at 0x1100
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;; R14 will be storing our condition
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FALSE R15 ; Our holder
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;; Prep TAPE_01
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LOADUI R0 0x1100
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COPY R0 R11 ; 0x1100
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FOPEN_WRITE
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;; Prep TAPE_02
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LOADUI R0 0x1101
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OR R0 R11 R10 ; 0x1101
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FOPEN_WRITE
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:loop
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@ -45,7 +50,7 @@
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JUMP.NP R0 @finish
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;; Write out unprocessed byte
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LOADUI R1 0x1101 ; Write to TAPE_02
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OR R1 R11 R10 ; Write to TAPE_02
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FPUTC ; Print the Char
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;; Convert byte to nybble
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@ -55,11 +60,11 @@
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JUMP.NP R0 @loop ; Don't use nonhex chars
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;; Deal with the case of second nybble
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JUMP.Z R11 @second_nybble ; Jump if toggled
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JUMP.Z R12 @second_nybble ; Jump if toggled
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;; Process first byte of pair
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ANDI R15 R0 0x0F ; Store First nibble
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FALSE R11 ; Flip the toggle
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FALSE R12 ; Flip the toggle
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JUMP @loop
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;; Combined second nybble in pair with first
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@ -69,9 +74,10 @@
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ADD R0 R0 R15 ; Combine nibbles
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;; Writeout and prepare for next cycle
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TRUE R11 ; Flip the toggle
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LOADUI R1 0x1100 ; Write the combined byte
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FPUTC ; To TAPE_01
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TRUE R12 ; Flip the toggle
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; Write the combined byte
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COPY R1 R11 ; To TAPE_01
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FPUTC
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JUMP @loop ; Try to get more bytes
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:hex
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@ -121,14 +127,14 @@
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LOADUI R0 10 ; WIth LF
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FPUTC ; Let the user see it
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CMPUI R14 R0 10 ; Stop at the end of line
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LOADUI R1 0x1101 ; Write to TAPE_02
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OR R1 R11 R10 ; Write to TAPE_02
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FPUTC ; The char we just read
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JUMP.NE R14 @ascii_comment ; Otherwise keep looping
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JUMP @ascii_other
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:finish
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LOADUI R0 0x1100 ; Close TAPE_01
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COPY R0 R11 ; Close TAPE_01
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FCLOSE
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LOADUI R0 0x1101 ; Close TAPE_02
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OR R0 R11 R10 ; Close TAPE_02
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FCLOSE
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HALT
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@ -5,7 +5,7 @@ f4bbf9e9c4828170d0c153ac265382dc705643f95efd2a029243326d426be5a4 roms/forth
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2b80849180d5fb3757bcca2471b6337808e5b5ca80b18d93fa82ddef0435b84b roms/lisp
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3020b194ead31ae19ba66fc35ed95465514373f6005896350d1608c9efabbdca roms/M0
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059d38e34275029f2de5f600f08fe01bd13cd173f7da58e3fbec7114074beff2 roms/SET
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cd2e30b50ad0d9587573d35d8b5153a0ba435beeee6f56c3dfe29b986ab4f7b3 roms/stage0_monitor
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49ccb24650f9112f71f487b1956418efa511b7fa61f8abf40420ff833dcd959b roms/stage0_monitor
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13b45134a88c1c6db349cb40f82269cee9edfce71ac644dc0e137bad053bf5ce roms/stage1_assembler-0
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156f555fce5b02f52445652b1ed0b443295706cdfbe23c5a021bd4efc77179bb roms/stage1_assembler-1
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2c02c50958f489a660a4915d2a9e207a0c61f411d42628bdaf4dcf6bf7149a9d roms/stage1_assembler-2
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