mu - Soul of a tiny new machine. More thorough tests → More comprehensible and rewrite-friendly software → More resilient society.

	Commit message (Expand)	Author	Age	Files	Lines
*	.	Kartik K. Agaram	2021-06-12	1	-1/+1
*	eliminate some implicit writes to real screen	Kartik K. Agaram	2021-06-12	1	-1/+1
*	shell: larger fake screen	Kartik K. Agaram	2021-06-12	1	-1/+1
*	.	Kartik K. Agaram	2021-06-06	1	-1/+1
*	.	Kartik K. Agaram	2021-06-04	1	-0/+1
*	.	Kartik K. Agaram	2021-06-03	1	-156/+7
*	.	Kartik K. Agaram	2021-05-31	1	-1/+1
*	disallow null traces	Kartik K. Agaram	2021-05-19	1	-5/+14
*	.	Kartik K. Agaram	2021-05-19	1	-1/+1
*	some boot-time heartbeat messages	Kartik K. Agaram	2021-05-07	1	-0/+9
*	.	Kartik K. Agaram	2021-05-01	1	-1/+1
*	move color scheme closer to Solarized dark	Kartik K. Agaram	2021-05-01	1	-1/+1
*	render definitions in 2 columns	Kartik K. Agaram	2021-04-29	1	-1/+1
*	adjust some colors and padding	Kartik K. Agaram	2021-04-29	1	-1/+4
*	devote 2/3rds of screen to definitions	Kartik K. Agaram	2021-04-25	1	-2/+2
*	add some padding to the sandbox	Kartik K. Agaram	2021-04-25	1	-1/+1
*	clear old output when new run is in progress	Kartik K. Agaram	2021-04-21	1	-2/+2
*	.	Kartik K. Agaram	2021-04-21	1	-1/+1
*	.	Kartik K. Agaram	2021-04-21	1	-1/+1
*	shell: show screen state during evaluation	Kartik K. Agaram	2021-04-21	1	-1/+1
*	shell: ctrl-r runs on real screen without a trace	Kartik K. Agaram	2021-04-17	1	-1/+47
*	load sandbox even if there are no globals	Kartik K. Agaram	2021-04-17	1	-11/+9
*	heh, the current state actually overflows 2KB	Kartik K. Agaram	2021-04-17	1	-4/+4
*	loosening a few more buffers	Kartik K. Agaram	2021-04-17	1	-4/+4
*	data.img now has more than one sector of data	Kartik K. Agaram	2021-04-16	1	-4/+5
*	shell: restore bindings after restart	Kartik K. Agaram	2021-04-15	1	-0/+15
*	.	Kartik K. Agaram	2021-04-15	1	-4/+8
*	.	Kartik K. Agaram	2021-04-15	1	-1/+4
*	.	Kartik K. Agaram	2021-04-15	1	-5/+2
*	.	Kartik K. Agaram	2021-04-15	1	-10/+8
*	add some structure to the serialization format	Kartik K. Agaram	2021-04-15	1	-2/+16
*	.	Kartik K. Agaram	2021-04-15	1	-0/+7
*	shell: load data disk as s-expr rather than string	Kartik K. Agaram	2021-04-14	1	-13/+14
*	shell: starting to work on persistent globals	Kartik K. Agaram	2021-04-14	1	-2/+8
*	.	Kartik K. Agaram	2021-04-14	1	-0/+15
*	shell: move fake screen to sandbox	Kartik K. Agaram	2021-04-10	1	-1/+1
*	.	Kartik K. Agaram	2021-04-10	1	-1/+1
*	shell: start of 'print' primitive	Kartik K. Agaram	2021-04-10	1	-1/+1
*	.	Kartik K. Agaram	2021-04-08	1	-2/+2
*	shell: create space to display globals	Kartik K. Agaram	2021-04-08	1	-4/+2
*	shell: extensible array of globals	Kartik K. Agaram	2021-04-05	1	-2/+5
*	.	Kartik K. Agaram	2021-04-05	1	-1/+1
*	shell: save repl input to disk before running	Kartik K. Agaram	2021-04-05	1	-2/+2
*	.	Kartik K. Agaram	2021-03-28	1	-6/+6
*	explicitly pass screen and keyboard to main	Kartik K. Agaram	2021-03-26	1	-4/+4
*	.	Kartik K. Agaram	2021-03-22	1	-1/+1
*	shell: read initial expression from secondary disk	Kartik K. Agaram	2021-03-21	1	-0/+20
*	7842 - new directory organization	Kartik K. Agaram	2021-03-03	1	-0/+22

# Rudimentary test harness == 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: # manual test # check-ints-equal(34, 34) # . . push args 68/push "error in check-ints-equal"/imm32 68/push 34/imm32 68/push 34/imm32 # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp # syscall(exit, 0) bb/copy-to-ebx 0/imm32 e8/call syscall_exit/disp32 # print msg to stderr if a != b, otherwise print "." check-ints-equal: # a: int, b: int, msg: (addr array byte) # . prologue 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 53/push-ebx # load first 2 args into eax and ebx 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 0/r32/eax 8/disp8 . # copy *(ebp+8) to eax 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 3/r32/ebx 0xc/disp8 . # copy *(ebp+12) to ebx # if (eax == ebx) success 39/compare 3/mod/direct 0/rm32/eax . . . 3/r32/ebx . . # compare eax and ebx 75/jump-if-unequal $check-ints-equal:else/disp8 # . _write(2/stderr, '.') # . . push args 68/push "."/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 # . return eb/jump $check-ints-equal:end/disp8 # otherwise print error message $check-ints-equal:else: # . _write(2/stderr, msg) # . . push args 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 1/r32/ecx 0x10/disp8 . # copy *(ebp+16) to ecx 51/push-ecx 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 # . _write(2/stderr, Newline) # . . push args 68/push Newline/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 # increment Num-test-failures ff 0/subop/increment 0/mod/indirect 5/rm32/.disp32 . . . Num-test-failures/disp32 # increment *Num-test-failures $check-ints-equal:end: # . restore registers 5b/pop-to-ebx 59/pop-to-ecx 58/pop-to-eax # . epilogue 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp 5d/pop-to-ebp c3/return == data # length-prefixed string containing just a single newline # convenient to have when printing messages and so on Newline: # (array byte) # size: int 1/imm32 # data 0a/newline # every test failure increments this counter Num-test-failures: # int 0/imm32 # length-prefixed string containing just a single space Space: # (array byte) # size: int 1/imm32 # data 20/space # length-prefixed string containing just a single slash Slash: # (array byte) # size: int 1/imm32 # data 2f/slash # . . vim:nowrap:textwidth=0