5153
This commit is contained in:
parent
36c745f8e0
commit
258f6b3a3a
|
@ -1,95 +0,0 @@
|
|||
# Print the (hex) textual representation of the lowest byte of a number.
|
||||
|
||||
== code
|
||||
# instruction effective address register displacement immediate
|
||||
# . op subop mod rm32 base index scale r32
|
||||
# . 1-3 bytes 3 bits 2 bits 3 bits 3 bits 3 bits 2 bits 2 bits 0/1/2/4 bytes 0/1/2/4 bytes
|
||||
|
||||
print-byte: # f : (address buffered-file), n : int -> <void>
|
||||
# . prolog
|
||||
55/push-EBP
|
||||
89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP
|
||||
# . save registers
|
||||
50/push-EAX
|
||||
# AL = convert upper nibble to hex
|
||||
8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 0/r32/EAX 0xc/disp8 . # copy *(EBP+12) to EAX
|
||||
c1/shift 5/subop/logic-right 3/mod/direct 0/rm32/EAX . . . . . 4/imm8 # shift EAX right by 4 bits, while padding zeroes
|
||||
25/and-EAX 0xf/imm32
|
||||
# . AL = to-hex-char(AL)
|
||||
e8/call to-hex-char/disp32
|
||||
# write-byte(f, AL)
|
||||
# . . push args
|
||||
50/push-EAX
|
||||
ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 8/disp8 . # push *(EBP+8)
|
||||
# . . call
|
||||
e8/call write-byte/disp32
|
||||
# . . discard args
|
||||
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
|
||||
# AL = convert lower nibble to hex
|
||||
8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 0/r32/EAX 0xc/disp8 . # copy *(EBP+12) to EAX
|
||||
25/and-EAX 0xf/imm32
|
||||
# . AL = to-hex-char(AL)
|
||||
e8/call to-hex-char/disp32
|
||||
# write-byte(f, AL)
|
||||
# . . push args
|
||||
50/push-EAX
|
||||
ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 8/disp8 . # push *(EBP+8)
|
||||
# . . call
|
||||
e8/call write-byte/disp32
|
||||
# . . discard args
|
||||
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
|
||||
$print-byte:end:
|
||||
# . restore registers
|
||||
58/pop-to-EAX
|
||||
# . epilog
|
||||
89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP
|
||||
5d/pop-to-EBP
|
||||
c3/return
|
||||
|
||||
test-print-byte:
|
||||
# - check that print-byte prints the hex textual representation
|
||||
# setup
|
||||
# . clear-stream(_test-stream)
|
||||
# . . push args
|
||||
68/push _test-stream/imm32
|
||||
# . . call
|
||||
e8/call clear-stream/disp32
|
||||
# . . discard args
|
||||
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP
|
||||
# . clear-stream(_test-buffered-file+4)
|
||||
# . . push args
|
||||
b8/copy-to-EAX _test-buffered-file/imm32
|
||||
05/add-to-EAX 4/imm32
|
||||
50/push-EAX
|
||||
# . . call
|
||||
e8/call clear-stream/disp32
|
||||
# . . discard args
|
||||
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP
|
||||
# print-byte(_test-buffered-file, 0xa) # exercises digit, non-digit as well as leading zero
|
||||
# . . push args
|
||||
68/push 0xa/imm32
|
||||
68/push _test-buffered-file/imm32
|
||||
# . . call
|
||||
e8/call print-byte/disp32
|
||||
# . . discard args
|
||||
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
|
||||
# flush(_test-buffered-file)
|
||||
# . . push args
|
||||
68/push _test-buffered-file/imm32
|
||||
# . . call
|
||||
e8/call flush/disp32
|
||||
# . . discard args
|
||||
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP
|
||||
# check-stream-equal(_test-stream, "0a", msg)
|
||||
# . . push args
|
||||
68/push "F - test-print-byte"/imm32
|
||||
68/push "0a"/imm32
|
||||
68/push _test-stream/imm32
|
||||
# . . call
|
||||
e8/call check-stream-equal/disp32
|
||||
# . . discard args
|
||||
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP
|
||||
# . end
|
||||
c3/return
|
||||
|
||||
# . . vim:nowrap:textwidth=0
|
|
@ -0,0 +1,215 @@
|
|||
# Print the (hex) textual representation of numbers.
|
||||
|
||||
== code
|
||||
# instruction effective address register displacement immediate
|
||||
# . op subop mod rm32 base index scale r32
|
||||
# . 1-3 bytes 3 bits 2 bits 3 bits 3 bits 3 bits 2 bits 2 bits 0/1/2/4 bytes 0/1/2/4 bytes
|
||||
|
||||
#? Entry: # run a single test, while debugging
|
||||
#? e8/call test-print-int32/disp32
|
||||
#? # syscall(exit, Num-test-failures)
|
||||
#? 8b/copy 0/mod/indirect 5/rm32/.disp32 . . 3/r32/EBX Num-test-failures/disp32 # copy *Num-test-failures to EBX
|
||||
#? b8/copy-to-EAX 1/imm32/exit
|
||||
#? cd/syscall 0x80/imm8
|
||||
|
||||
# print the hex representation for the lowest byte of a number
|
||||
print-byte: # f : (address buffered-file), n : int -> <void>
|
||||
# . prolog
|
||||
55/push-EBP
|
||||
89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP
|
||||
# . save registers
|
||||
50/push-EAX
|
||||
# AL = convert upper nibble to hex
|
||||
8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 0/r32/EAX 0xc/disp8 . # copy *(EBP+12) to EAX
|
||||
c1/shift 5/subop/logic-right 3/mod/direct 0/rm32/EAX . . . . . 4/imm8 # shift EAX right by 4 bits, while padding zeroes
|
||||
25/and-EAX 0xf/imm32
|
||||
# . AL = to-hex-char(AL)
|
||||
e8/call to-hex-char/disp32
|
||||
# write-byte(f, AL)
|
||||
# . . push args
|
||||
50/push-EAX
|
||||
ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 8/disp8 . # push *(EBP+8)
|
||||
# . . call
|
||||
e8/call write-byte/disp32
|
||||
# . . discard args
|
||||
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
|
||||
# AL = convert lower nibble to hex
|
||||
8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 0/r32/EAX 0xc/disp8 . # copy *(EBP+12) to EAX
|
||||
25/and-EAX 0xf/imm32
|
||||
# . AL = to-hex-char(AL)
|
||||
e8/call to-hex-char/disp32
|
||||
# write-byte(f, AL)
|
||||
# . . push args
|
||||
50/push-EAX
|
||||
ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 8/disp8 . # push *(EBP+8)
|
||||
# . . call
|
||||
e8/call write-byte/disp32
|
||||
# . . discard args
|
||||
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
|
||||
$print-byte:end:
|
||||
# . restore registers
|
||||
58/pop-to-EAX
|
||||
# . epilog
|
||||
89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP
|
||||
5d/pop-to-EBP
|
||||
c3/return
|
||||
|
||||
test-print-byte:
|
||||
# - check that print-byte prints the hex textual representation
|
||||
# setup
|
||||
# . clear-stream(_test-stream)
|
||||
# . . push args
|
||||
68/push _test-stream/imm32
|
||||
# . . call
|
||||
e8/call clear-stream/disp32
|
||||
# . . discard args
|
||||
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP
|
||||
# . clear-stream(_test-buffered-file+4)
|
||||
# . . push args
|
||||
b8/copy-to-EAX _test-buffered-file/imm32
|
||||
05/add-to-EAX 4/imm32
|
||||
50/push-EAX
|
||||
# . . call
|
||||
e8/call clear-stream/disp32
|
||||
# . . discard args
|
||||
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP
|
||||
# print-byte(_test-buffered-file, 0xa) # exercises digit, non-digit as well as leading zero
|
||||
# . . push args
|
||||
68/push 0xa/imm32
|
||||
68/push _test-buffered-file/imm32
|
||||
# . . call
|
||||
e8/call print-byte/disp32
|
||||
# . . discard args
|
||||
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
|
||||
# flush(_test-buffered-file)
|
||||
# . . push args
|
||||
68/push _test-buffered-file/imm32
|
||||
# . . call
|
||||
e8/call flush/disp32
|
||||
# . . discard args
|
||||
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP
|
||||
# check-stream-equal(_test-stream, "0a", msg)
|
||||
# . . push args
|
||||
68/push "F - test-print-byte"/imm32
|
||||
68/push "0a"/imm32
|
||||
68/push _test-stream/imm32
|
||||
# . . call
|
||||
e8/call check-stream-equal/disp32
|
||||
# . . discard args
|
||||
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP
|
||||
# . end
|
||||
c3/return
|
||||
|
||||
print-int32: # f : (address buffered-file), n : int -> <void>
|
||||
# pseudocode:
|
||||
# ECX = 28
|
||||
# while true
|
||||
# if (ECX < 0) break
|
||||
# EAX = n >> ECX
|
||||
# EAX = EAX & 0xf
|
||||
# write-byte(f, AL)
|
||||
# ECX -= 4
|
||||
#
|
||||
# . prolog
|
||||
55/push-EBP
|
||||
89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP
|
||||
# . save registers
|
||||
50/push-EAX
|
||||
51/push-ECX
|
||||
# ECX = 28
|
||||
b9/copy-to-ECX 0x1c/imm32
|
||||
$print-int32:loop:
|
||||
# if (ECX < 0) break
|
||||
81 7/subop/compare 3/mod/direct 1/rm32/ECX . . . . . 0/imm32 # compare ECX
|
||||
7c/jump-if-lesser $print-int32:end/disp8
|
||||
# EAX = n >> ECX
|
||||
8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 0/r32/EAX 0xc/disp8 . # copy *(EBP+12) to EAX
|
||||
d3/>>ECX 5/subop/pad-zeroes 3/mod/direct 0/rm32/EAX . . . . . . # shift EAX right by ECX bits, padding zeroes
|
||||
# EAX = to-hex-char(AL)
|
||||
25/and-EAX 0xf/imm32
|
||||
e8/call to-hex-char/disp32
|
||||
# write-byte(f, AL)
|
||||
# . . push args
|
||||
50/push-EAX
|
||||
ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 8/disp8 . # push *(EBP+8)
|
||||
# . . call
|
||||
e8/call write-byte/disp32
|
||||
# . . discard args
|
||||
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
|
||||
# ECX -= 4
|
||||
81 5/subop/subtract 3/mod/direct 1/rm32/ECX . . . . . 4/imm32 # subtract from ECX
|
||||
eb/jump $print-int32:loop/disp8
|
||||
$print-int32:end:
|
||||
# . restore registers
|
||||
59/pop-to-ECX
|
||||
58/pop-to-EAX
|
||||
# . epilog
|
||||
89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP
|
||||
5d/pop-to-EBP
|
||||
c3/return
|
||||
|
||||
test-print-int32:
|
||||
# - check that print-int32 prints the hex textual representation
|
||||
# setup
|
||||
# . clear-stream(_test-stream)
|
||||
# . . push args
|
||||
68/push _test-stream/imm32
|
||||
# . . call
|
||||
e8/call clear-stream/disp32
|
||||
# . . discard args
|
||||
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP
|
||||
# . clear-stream(_test-buffered-file+4)
|
||||
# . . push args
|
||||
b8/copy-to-EAX _test-buffered-file/imm32
|
||||
05/add-to-EAX 4/imm32
|
||||
50/push-EAX
|
||||
# . . call
|
||||
e8/call clear-stream/disp32
|
||||
# . . discard args
|
||||
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP
|
||||
# print-int32(_test-buffered-file, 0x8899aa)
|
||||
# . . push args
|
||||
68/push 0x8899aa/imm32
|
||||
68/push _test-buffered-file/imm32
|
||||
# . . call
|
||||
e8/call print-int32/disp32
|
||||
# . . discard args
|
||||
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
|
||||
# flush(_test-buffered-file)
|
||||
# . . push args
|
||||
68/push _test-buffered-file/imm32
|
||||
# . . call
|
||||
e8/call flush/disp32
|
||||
# . . discard args
|
||||
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP
|
||||
#? # dump line {{{
|
||||
#? # . write-stream(2/stderr, line)
|
||||
#? # . . push args
|
||||
#? 68/push _test-stream/imm32
|
||||
#? 68/push 2/imm32/stderr
|
||||
#? # . . call
|
||||
#? e8/call write-stream/disp32
|
||||
#? # . . discard args
|
||||
#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
|
||||
#? # . write(2/stderr, "$\n")
|
||||
#? # . . push args
|
||||
#? 68/push "$\n"/imm32
|
||||
#? 68/push 2/imm32/stderr
|
||||
#? # . . call
|
||||
#? e8/call write/disp32
|
||||
#? # . . discard args
|
||||
#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
|
||||
#? # }}}
|
||||
# check-stream-equal(_test-stream, "008899aa", msg)
|
||||
# . . push args
|
||||
68/push "F - test-print-int32"/imm32
|
||||
68/push "008899aa"/imm32
|
||||
68/push _test-stream/imm32
|
||||
# . . call
|
||||
e8/call check-stream-equal/disp32
|
||||
# . . discard args
|
||||
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP
|
||||
# . end
|
||||
c3/return
|
||||
|
||||
# . . vim:nowrap:textwidth=0
|
BIN
subx/apps/assort
BIN
subx/apps/assort
Binary file not shown.
Binary file not shown.
Binary file not shown.
Binary file not shown.
BIN
subx/apps/handle
BIN
subx/apps/handle
Binary file not shown.
BIN
subx/apps/hex
BIN
subx/apps/hex
Binary file not shown.
BIN
subx/apps/pack
BIN
subx/apps/pack
Binary file not shown.
Loading…
Reference in New Issue