# A table is a stream of (key, value) rows. # # Each row consists of a 4-byte key (address to a string) and a variable-size # value. # # Accessing the table performs a linear scan for a key string, and always # requires passing in the row size. # # Table primitives have the form (stream, , row-size, ...) -> address/EAX # # The following table shows available options for : # if not found: | arg=string arg=slice # ------------------------+--------------------------------------------------- # abort | get get-slice # insert key | get-or-insert leaky-get-or-insert-slice # stop | get-or-stop get-slice-or-stop # return null | maybe-get maybe-get-slice # Some variants may take extra args. == 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 # if no row is found, abort get: # table : (address stream {string, _}), key : (address string), row-size : int, abort-message-prefix : (address string) -> EAX : (address _) # pseudocode: # curr = table->data # max = &table->data[table->write] # while curr < max # if string-equal?(key, *curr) # return curr+4 # curr += row-size # abort # # . prolog 55/push-EBP 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP # . save registers 51/push-ECX 52/push-EDX 56/push-ESI # ESI = table 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 6/r32/ESI 8/disp8 . # copy *(EBP+8) to ESI # curr/ECX = table->data 8d/copy-address 1/mod/*+disp8 6/rm32/ESI . . . 1/r32/ECX 0xc/disp8 . # copy ESI+12 to ECX # max/EDX = table->data + table->write 8b/copy 0/mod/indirect 6/rm32/ESI . . . 2/r32/EDX . . # copy *ESI to EDX 8d/copy-address 0/mod/indirect 4/rm32/sib 1/base/ECX 2/index/EDX . 2/r32/EDX . . # copy ECX+EDX to EDX $get:search-loop: # if (curr >= max) abort 39/compare 3/mod/direct 1/rm32/ECX . . . 2/r32/EDX . . # compare ECX with EDX 73/jump-if-greater-or-equal-unsigned $get:abort/disp8 # if (string-equal?(key, *curr)) return curr+4 # . EAX = string-equal?(key, *curr) # . . push args ff 6/subop/push 0/mod/indirect 1/rm32/ECX . . . . . . # push *ECX ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12) # . . call e8/call string-equal?/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # . if (EAX != 0) return EAX = curr+4 3d/compare-EAX-and 0/imm32 74/jump-if-equal $get:mismatch/disp8 8d/copy-address 1/mod/*+disp8 1/rm32/ECX . . . 0/r32/EAX 4/disp8 . # copy ECX+4 to EAX eb/jump $get:end/disp8 $get:mismatch: # curr += row-size 03/add 1/mod/*+disp8 5/rm32/EBP . . . 1/r32/ECX 0x10/disp8 . # add *(EBP+16) to ECX # loop eb/jump $get:search-loop/disp8 $get:end: # . restore registers 5e/pop-to-ESI 5a/pop-to-EDX 59/pop-to-ECX # . epilog 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP 5d/pop-to-EBP c3/return $get:abort: # . _write(2/stderr, abort-message-prefix) # . . push args ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0x14/disp8 . # push *(EBP+20) 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, error) # . . push args 68/push ": get: key not found: "/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 # . _write(2/stderr, key) # . . push args ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12) 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, "\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 # . syscall(exit, 1) bb/copy-to-EBX 1/imm32 b8/copy-to-EAX 1/imm32/exit cd/syscall 0x80/imm8 # never gets here test-get: # . prolog 55/push-EBP 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP # - setup: create a table with a couple of keys # var table/ECX : (address stream {string, number}) = stream(2 rows * 8 bytes) 81 5/subop/subtract 3/mod/direct 4/rm32/ESP . . . . . 0x10/imm32 # subtract from ESP 68/push 0x10/imm32/length 68/push 0/imm32/read 68/push 0/imm32/write 89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX # insert(table, "code", 8 bytes per row) # . . push args 68/push 8/imm32/row-size 68/push "code"/imm32 51/push-ECX # . . call e8/call get-or-insert/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP # insert(table, "data", 8 bytes per row) # . . push args 68/push 8/imm32/row-size 68/push "data"/imm32 51/push-ECX # . . call e8/call get-or-insert/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP $test-get:check1: # EAX = get(table, "code", 8 bytes per row) # . . push args 68/push 8/imm32/row-size 68/push "code"/imm32 51/push-ECX # . . call e8/call get/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP # check-ints-equal(EAX - table->data, 4, msg) # . check-ints-equal(EAX - table, 16, msg) # . . push args 68/push "F - test-get/0"/imm32 68/push 0x10/imm32 29/subtract 3/mod/direct 0/rm32/EAX . . . 1/r32/ECX . . # subtract ECX from EAX 50/push-EAX # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP $test-get:check2: # EAX = get(table, "data", 8 bytes per row) # . . push args 68/push 8/imm32/row-size 68/push "data"/imm32 51/push-ECX # . . call e8/call get/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP # check-ints-equal(EAX - table->data, 12, msg) # . check-ints-equal(EAX - table, 24, msg) # . . push args 68/push "F - test-get/1"/imm32 68/push 0x18/imm32 29/subtract 3/mod/direct 0/rm32/EAX . . . 1/r32/ECX . . # subtract ECX from EAX 50/push-EAX # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP $test-get:end: # . epilog 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP 5d/pop-to-EBP c3/return # if no row is found, abort get-slice: # table : (address stream {string, _}), key : (address slice), row-size : int, abort-message-prefix : (address string) -> EAX : (address _) # pseudocode: # curr = table->data # max = &table->data[table->write] # while curr < max # if slice-equal?(key, *curr) # return curr+4 # curr += row-size # abort # # . prolog 55/push-EBP 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP # . save registers 51/push-ECX 52/push-EDX 56/push-ESI # ESI = table 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 6/r32/ESI 8/disp8 . # copy *(EBP+8) to ESI # curr/ECX = table->data 8d/copy-address 1/mod/*+disp8 6/rm32/ESI . . . 1/r32/ECX 0xc/disp8 . # copy ESI+12 to ECX # max/EDX = table->data + table->write 8b/copy 0/mod/indirect 6/rm32/ESI . . . 2/r32/EDX . . # copy *ESI to EDX 8d/copy-address 0/mod/indirect 4/rm32/sib 1/base/ECX 2/index/EDX . 2/r32/EDX . . # copy ECX+EDX to EDX $get-slice:search-loop: # if (curr >= max) abort 39/compare 3/mod/direct 1/rm32/ECX . . . 2/r32/EDX . . # compare ECX with EDX 73/jump-if-greater-or-equal-unsigned $get-slice:abort/disp8 # if (slice-equal?(key, *curr)) return curr+4 # . EAX = slice-equal?(key, *curr) # . . push args ff 6/subop/push 0/mod/indirect 1/rm32/ECX . . . . . . # push *ECX ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12) # . . call e8/call slice-equal?/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # . if (EAX != 0) return EAX = curr+4 3d/compare-EAX-and 0/imm32 74/jump-if-equal $get-slice:mismatch/disp8 8d/copy-address 1/mod/*+disp8 1/rm32/ECX . . . 0/r32/EAX 4/disp8 . # copy ECX+4 to EAX eb/jump $get-slice:end/disp8 $get-slice:mismatch: # curr += row-size 03/add 1/mod/*+disp8 5/rm32/EBP . . . 1/r32/ECX 0x10/disp8 . # add *(EBP+16) to ECX # loop eb/jump $get-slice:search-loop/disp8 $get-slice:end: # . restore registers 5e/pop-to-ESI 5a/pop-to-EDX 59/pop-to-ECX # . epilog 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP 5d/pop-to-EBP c3/return $get-slice:abort: # . _write(2/stderr, abort-message-prefix) # . . push args ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0x14/disp8 . # push *(EBP+20) 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, error) # . . push args 68/push ": get-slice: key not found: "/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 # . write-slice-buffered(Stderr, key) # . . push args ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12) 68/push Stderr/imm32 # . . call e8/call write-slice-buffered/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # . flush(Stderr) # . . push args 68/push Stderr/imm32 # . . call e8/call flush/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/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 # . syscall(exit, 1) bb/copy-to-EBX 1/imm32 b8/copy-to-EAX 1/imm32/exit cd/syscall 0x80/imm8 # never gets here test-get-slice: # . prolog 55/push-EBP 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP # - setup: create a table with a couple of keys # var table/ECX : (address stream {string, number}) = stream(2 rows * 8 bytes) 81 5/subop/subtract 3/mod/direct 4/rm32/ESP . . . . . 0x10/imm32 # subtract from ESP 68/push 0x10/imm32/length 68/push 0/imm32/read 68/push 0/imm32/write 89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX # insert(table, "code", 8 bytes per row) # . . push args 68/push 8/imm32/row-size 68/push "code"/imm32 51/push-ECX # . . call e8/call get-or-insert/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP # insert(table, "data", 8 bytes per row) # . . push args 68/push 8/imm32/row-size 68/push "data"/imm32 51/push-ECX # . . call e8/call get-or-insert/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP $test-get-slice:check1: # (EAX..EDX) = "code" b8/copy-to-EAX "code"/imm32 8b/copy 0/mod/indirect 0/rm32/EAX . . . 2/r32/EDX . . # copy *EAX to EDX 8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/EAX 2/index/EDX . 2/r32/EDX 4/disp8 . # copy EAX+EDX+4 to EDX 05/add-to-EAX 4/imm32 # var slice/EDX = {EAX, EDX} 52/push-EDX 50/push-EAX 89/copy 3/mod/direct 2/rm32/EDX . . . 4/r32/ESP . . # copy ESP to EDX # EAX = get-slice(table, "code", 8 bytes per row) # . . push args 68/push 8/imm32/row-size 52/push-EDX 51/push-ECX # . . call e8/call get-slice/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP # check-ints-equal(EAX - table->data, 4, msg) # first row's value slot returned # . check-ints-equal(EAX - table, 16, msg) # . . push args 68/push "F - test-get-slice/0"/imm32 68/push 0x10/imm32 29/subtract 3/mod/direct 0/rm32/EAX . . . 1/r32/ECX . . # subtract ECX from EAX 50/push-EAX # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP $test-get-slice:check2: # (EAX..EDX) = "data" b8/copy-to-EAX "data"/imm32 8b/copy 0/mod/indirect 0/rm32/EAX . . . 2/r32/EDX . . # copy *EAX to EDX 8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/EAX 2/index/EDX . 2/r32/EDX 4/disp8 . # copy EAX+EDX+4 to EDX 05/add-to-EAX 4/imm32 # var slice/EDX = {EAX, EDX} 52/push-EDX 50/push-EAX 89/copy 3/mod/direct 2/rm32/EDX . . . 4/r32/ESP . . # copy ESP to EDX # EAX = get-slice(table, "data" slice, 8 bytes per row) # . . push args 68/push 8/imm32/row-size 52/push-EDX 51/push-ECX # . . call e8/call get-slice/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP # check-ints-equal(EAX - table->data, 12, msg) # . check-ints-equal(EAX - table, 24, msg) # . . push args 68/push "F - test-get-slice/1"/imm32 68/push 0x18/imm32 29/subtract 3/mod/direct 0/rm32/EAX . . . 1/r32/ECX . . # subtract ECX from EAX 50/push-EAX # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP $test-get-slice:end: # . epilog 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP 5d/pop-to-EBP c3/return # if no row is found, save 'key' to the next available row # if there are no rows free, abort # return the address of the value # Beware: assume keys are immutable; they're inserted by reference # TODO: pass in an allocation descriptor get-or-insert: # table : (address stream {string, _}), key : (address string), row-size : int -> EAX : (address _) # pseudocode: # curr = table->data # max = &table->data[table->write] # while curr < max # if string-equal?(key, *curr) # return curr+4 # curr += row-size # if table->write >= table->length # abort # zero-out(max, row-size) # *max = key # table->write += row-size # return max+4 # # . prolog 55/push-EBP 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP # . save registers 51/push-ECX 52/push-EDX 56/push-ESI # ESI = table 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 6/r32/ESI 8/disp8 . # copy *(EBP+8) to ESI # curr/ECX = table->data 8d/copy-address 1/mod/*+disp8 6/rm32/ESI . . . 1/r32/ECX 0xc/disp8 . # copy ESI+12 to ECX # max/EDX = table->data + table->write 8b/copy 0/mod/indirect 6/rm32/ESI . . . 2/r32/EDX . . # copy *ESI to EDX 8d/copy-address 0/mod/indirect 4/rm32/sib 1/base/ECX 2/index/EDX . 2/r32/EDX . . # copy ECX+EDX to EDX $get-or-insert:search-loop: # if (curr >= max) break 39/compare 3/mod/direct 1/rm32/ECX . . . 2/r32/EDX . . # compare ECX with EDX 73/jump-if-greater-or-equal-unsigned $get-or-insert:not-found/disp8 # if (string-equal?(key, *curr)) return curr+4 # . EAX = string-equal?(key, *curr) # . . push args ff 6/subop/push 0/mod/indirect 1/rm32/ECX . . . . . . # push *ECX ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12) # . . call e8/call string-equal?/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # . if (EAX != 0) return EAX = curr+4 3d/compare-EAX-and 0/imm32 74/jump-if-equal $get-or-insert:mismatch/disp8 8d/copy-address 1/mod/*+disp8 1/rm32/ECX . . . 0/r32/EAX 4/disp8 . # copy ECX+4 to EAX eb/jump $get-or-insert:end/disp8 $get-or-insert:mismatch: # curr += row-size 03/add 1/mod/*+disp8 5/rm32/EBP . . . 1/r32/ECX 0x10/disp8 . # add *(EBP+16) to ECX # loop eb/jump $get-or-insert:search-loop/disp8 $get-or-insert:not-found: # result/EAX = 0 31/xor 3/mod/direct 0/rm32/EAX . . . 0/r32/EAX . . # clear EAX # if (table->write >= table->length) abort 8b/copy 0/mod/indirect 6/rm32/ESI . . . 1/r32/ECX . . # copy *ESI to ECX 3b/compare 1/mod/*+disp8 6/rm32/ESI . . . 1/r32/ECX 8/disp8 . # compare ECX with *(ESI+8) 73/jump-if-greater-or-equal-unsigned $get-or-insert:abort/disp8 # zero-out(max, row-size) # . . push args ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0x10/disp8 . # push *(EBP+16) 52/push-EDX # . . call e8/call zero-out/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # *max = key # . EAX = key 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 0/r32/EAX 0xc/disp8 . # copy *(EBP+12) to EAX # . *max = EAX 89/copy 0/mod/indirect 2/rm32/EDX . . . 0/r32/EAX . . # copy EAX to *EDX # table->write += row-size # . EAX = row-size 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 0/r32/EAX 0x10/disp8 . # copy *(EBP+16) to EAX # . table->write += EAX 01/add 0/mod/indirect 6/rm32/ESI . . . 0/r32/EAX . . # add EAX to *ESI # return max+4 # . EAX = max 89/copy 3/mod/direct 0/rm32/EAX . . . 2/r32/EDX . . # copy EDX to EAX # . EAX += 4 05/add-to-EAX 4/imm32 $get-or-insert:end: # . restore registers 5e/pop-to-ESI 5a/pop-to-EDX 59/pop-to-ECX # . epilog 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP 5d/pop-to-EBP c3/return $get-or-insert:abort: # . _write(2/stderr, error) # . . push args 68/push "get-or-insert: table is full\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 # . syscall(exit, 1) bb/copy-to-EBX 1/imm32 b8/copy-to-EAX 1/imm32/exit cd/syscall 0x80/imm8 # never gets here test-get-or-insert: # . prolog 55/push-EBP 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP # var table/ECX : (address stream {string, number}) = stream(2 rows * 8 bytes) 81 5/subop/subtract 3/mod/direct 4/rm32/ESP . . . . . 0x10/imm32 # subtract from ESP 68/push 0x10/imm32/length 68/push 0/imm32/read 68/push 0/imm32/write 89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX $test-get-or-insert:first-call: # - start with an empty table, insert one key, verify that it was inserted # EAX = get-or-insert(table, "code", 8 bytes per row) # . . push args 68/push 8/imm32/row-size 68/push "code"/imm32 51/push-ECX # . . call e8/call get-or-insert/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP # check-ints-equal(EAX - table->data, 4, msg) # first row's value slot returned # . check-ints-equal(EAX - table, 16, msg) # . . push args 68/push "F - test-get-or-insert/0"/imm32 68/push 0x10/imm32 29/subtract 3/mod/direct 0/rm32/EAX . . . 1/r32/ECX . . # subtract ECX from EAX 50/push-EAX # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP $test-get-or-insert:check2: # check-ints-equal(table->write, row-size = 8, msg) # . . push args 68/push "F - test-get-or-insert/1"/imm32 68/push 8/imm32/row-size ff 6/subop/push 0/mod/indirect 1/rm32/ECX . . . . . . # push *ECX # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP # check-string-equal(*table->data, "code", msg) # . . push args 68/push "F - test-get-or-insert/2"/imm32 68/push "code"/imm32 ff 6/subop/push 1/mod/*+disp8 1/rm32/ECX . . . . 0xc/disp8 . # push *(ECX+12) # . . call e8/call check-string-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP $test-get-or-insert:second-call: # - insert the same key again, verify that it was reused # EAX = get-or-insert(table, "code", 8 bytes per row) # . . push args 68/push 8/imm32/row-size 68/push "code"/imm32 51/push-ECX # . . call e8/call get-or-insert/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP # check-ints-equal(EAX - table->data, 4, msg) # . check-ints-equal(EAX - table, 16, msg) # . . push args 68/push "F - test-get-or-insert/3"/imm32 68/push 0x10/imm32 29/subtract 3/mod/direct 0/rm32/EAX . . . 1/r32/ECX . . # subtract ECX from EAX 50/push-EAX # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP # no new row inserted # . check-ints-equal(table->write, row-size = 8, msg) # . . push args 68/push "F - test-get-or-insert/4"/imm32 68/push 8/imm32/row-size ff 6/subop/push 0/mod/indirect 1/rm32/ECX . . . . . . # push *ECX # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP # check-string-equal(*table->data, "code", msg) # . . push args 68/push "F - test-get-or-insert/5"/imm32 68/push "code"/imm32 ff 6/subop/push 1/mod/*+disp8 1/rm32/ECX . . . . 0xc/disp8 . # push *(ECX+12) # . . call e8/call check-string-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP $test-get-or-insert:third-call: # - insert a new key, verify that it was inserted # EAX = get-or-insert(table, "data", 8 bytes per row) # . . push args 68/push 8/imm32/row-size 68/push "data"/imm32 51/push-ECX # . . call e8/call get-or-insert/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP # table gets a new row # check-ints-equal(EAX - table->data, 12, msg) # second row's value slot returned # . check-ints-equal(EAX - table, 24, msg) # . . push args 68/push "F - test-get-or-insert/6"/imm32 68/push 0x18/imm32 29/subtract 3/mod/direct 0/rm32/EAX . . . 1/r32/ECX . . # subtract ECX from EAX 50/push-EAX # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP # check-ints-equal(table->write, 2 rows = 16, msg) # . . push args 68/push "F - test-get-or-insert/7"/imm32 68/push 0x10/imm32/two-rows ff 6/subop/push 0/mod/indirect 1/rm32/ECX . . . . . . # push *ECX # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP # check-string-equal(*table->data+8, "data", msg) # check-string-equal(*(table+20), "data", msg) # . . push args 68/push "F - test-get-or-insert/8"/imm32 68/push "data"/imm32 ff 6/subop/push 1/mod/*+disp8 1/rm32/ECX . . . . 0x14/disp8 . # push *(ECX+20) # . . call e8/call check-string-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP $test-get-or-insert:end: # . epilog 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP 5d/pop-to-EBP c3/return # if no row is found, save 'key' in the next available row # if there are no rows free, abort # WARNING: leaks memory # TODO: pass in an allocation descriptor leaky-get-or-insert-slice: # table : (address stream {string, _}), key : (address slice), row-size : int -> EAX : (address _) # pseudocode: # curr = table->data # max = &table->data[table->write] # while curr < max # if slice-equal?(key, *curr) # return curr+4 # curr += row-size # if table->write >= table->length # abort # zero-out(max, row-size) # *max = slice-to-string(Heap, key) # table->write += row-size # return max+4 # # . prolog 55/push-EBP 89/copy 3/mod/direct 5/rm32/EBP . .
generated by cgit-pink 1.4.1-2-gfad0 (git 2.36.2.497.gbbea4dcf42) at 2024-11-23 03:43:53 +0000
(EBP+8) to ESI # curr/ECX = table->data 8d/copy-address 1/mod/*+disp8 6/rm32/ESI . . . 1/r32/ECX 0xc/disp8 . # copy ESI+12 to ECX # max/EDX = table->data + table->write 8b/copy 0/mod/indirect 6/rm32/ESI . . . 2/r32/EDX . . # copy *ESI to EDX 8d/copy-address 0/mod/indirect 4/rm32/sib 1/base/ECX 2/index/EDX . 2/r32/EDX . . # copy ECX+EDX to EDX $leaky-get-or-insert-slice:search-loop: # if (curr >= max) break 39/compare 3/mod/direct 1/rm32/ECX . . . 2/r32/EDX . . # compare ECX with EDX 73/jump-if-greater-or-equal-unsigned $leaky-get-or-insert-slice:not-found/disp8 # if (slice-equal?(key, *curr)) return curr+4 # . EAX = slice-equal?(key, *curr) # . . push args ff 6/subop/push 0/mod/indirect 1/rm32/ECX . . . . . . # push *ECX ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12) # . . call e8/call slice-equal?/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # . if (EAX != 0) return EAX = curr+4 3d/compare-EAX-and 0/imm32 74/jump-if-equal $leaky-get-or-insert-slice:mismatch/disp8 8d/copy-address 1/mod/*+disp8 1/rm32/ECX . . . 0/r32/EAX 4/disp8 . # copy ECX+4 to EAX eb/jump $leaky-get-or-insert-slice:end/disp8 $leaky-get-or-insert-slice:mismatch: # curr += row-size 03/add 1/mod/*+disp8 5/rm32/EBP . . . 1/r32/ECX 0x10/disp8 . # add *(EBP+16) to ECX # loop eb/jump $leaky-get-or-insert-slice:search-loop/disp8 $leaky-get-or-insert-slice:not-found: # result/EAX = 0 31/xor 3/mod/direct 0/rm32/EAX . . . 0/r32/EAX . . # clear EAX # if (table->write >= table->length) abort 8b/copy 0/mod/indirect 6/rm32/ESI . . . 1/r32/ECX . . # copy *ESI to ECX 3b/compare 1/mod/*+disp8 6/rm32/ESI . . . 1/r32/ECX 8/disp8 . # compare ECX with *(ESI+8) 7d/jump-if-greater-or-equal $leaky-get-or-insert-slice:abort/disp8 # zero-out(max, row-size) # . . push args ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0x10/disp8 . # push *(EBP+16) 52/push-EDX # . . call e8/call zero-out/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # *max = slice-to-string(Heap, key) # . EAX = slice-to-string(Heap, key) # . . push args ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12) 68/push Heap/imm32 # . . call e8/call slice-to-string/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # . *max = EAX 89/copy 0/mod/indirect 2/rm32/EDX . . . 0/r32/EAX . . # copy EAX to *EDX # table->write += row-size # . EAX = row-size 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 0/r32/EAX 0x10/disp8 . # copy *(EBP+16) to EAX # . table->write += EAX 01/add 0/mod/indirect 6/rm32/ESI . . . 0/r32/EAX . . # add EAX to *ESI # return max+4 # . EAX = max 89/copy 3/mod/direct 0/rm32/EAX . . . 2/r32/EDX . . # copy EDX to EAX # . EAX += 4 05/add-to-EAX 4/imm32 $leaky-get-or-insert-slice:end: # . restore registers 5e/pop-to-ESI 5a/pop-to-EDX 59/pop-to-ECX # . epilog 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP 5d/pop-to-EBP c3/return $leaky-get-or-insert-slice:abort: # . _write(2/stderr, error) # . . push args 68/push "leaky-get-or-insert-slice: table is full\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 # . syscall(exit, 1) bb/copy-to-EBX 1/imm32 b8/copy-to-EAX 1/imm32/exit cd/syscall 0x80/imm8 # never gets here test-leaky-get-or-insert-slice: # . prolog 55/push-EBP 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP # var table/ECX : (address stream {string, number}) = stream(2 rows * 8 bytes) 81 5/subop/subtract 3/mod/direct 4/rm32/ESP . . . . . 0x10/imm32 # subtract from ESP 68/push 0x10/imm32/length 68/push 0/imm32/read 68/push 0/imm32/write 89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX # (EAX..EDX) = "code" b8/copy-to-EAX "code"/imm32 8b/copy 0/mod/indirect 0/rm32/EAX . . . 2/r32/EDX . . # copy *EAX to EDX 8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/EAX 2/index/EDX . 2/r32/EDX 4/disp8 . # copy EAX+EDX+4 to EDX 05/add-to-EAX 4/imm32 # var slice/EDX = {EAX, EDX} 52/push-EDX 50/push-EAX 89/copy 3/mod/direct 2/rm32/EDX . . . 4/r32/ESP . . # copy ESP to EDX $test-leaky-get-or-insert-slice:first-call: # - start with an empty table, insert one key, verify that it was inserted # EAX = leaky-get-or-insert-slice(table, "code" slice, 8 bytes per row) # . . push args 68/push 8/imm32/row-size 52/push-EDX 51/push-ECX # . . call e8/call leaky-get-or-insert-slice/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP # check-ints-equal(EAX - table->data, 4, msg) # first row's value slot returned # . check-ints-equal(EAX - table, 16, msg) # . . push args 68/push "F - test-leaky-get-or-insert-slice/0"/imm32 68/push 0x10/imm32 29/subtract 3/mod/direct 0/rm32/EAX . . . 1/r32/ECX . . # subtract ECX from EAX 50/push-EAX # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP $test-leaky-get-or-insert-slice:check2: # check-ints-equal(table->write, row-size = 8, msg) # . . push args 68/push "F - test-leaky-get-or-insert-slice/1"/imm32 68/push 8/imm32/row-size ff 6/subop/push 0/mod/indirect 1/rm32/ECX . . . . . . # push *ECX # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP # check-string-equal(*table->data, "code", msg) # . . push args 68/push "F - test-leaky-get-or-insert-slice/2"/imm32 68/push "code"/imm32 ff 6/subop/push 1/mod/*+disp8 1/rm32/ECX . . . . 0xc/disp8 . # push *(ECX+12) # . . call e8/call check-string-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP $test-leaky-get-or-insert-slice:second-call: # - insert the same key again, verify that it was reused # EAX = leaky-get-or-insert-slice(table, "code" slice, 8 bytes per row) # . . push args 68/push 8/imm32/row-size 52/push-EDX 51/push-ECX # . . call e8/call leaky-get-or-insert-slice/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP # check-ints-equal(EAX - table->data, 4, msg) # . check-ints-equal(EAX - table, 16, msg) # . . push args 68/push "F - test-leaky-get-or-insert-slice/3"/imm32 68/push 0x10/imm32 29/subtract 3/mod/direct 0/rm32/EAX . . . 1/r32/ECX . . # subtract ECX from EAX 50/push-EAX # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP # no new row inserted # . check-ints-equal(table->write, row-size = 8, msg) # . . push args 68/push "F - test-leaky-get-or-insert-slice/4"/imm32 68/push 8/imm32/row-size ff 6/subop/push 0/mod/indirect 1/rm32/ECX . . . . . . # push *ECX # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP # check-string-equal(*table->data, "code", msg) # . . push args 68/push "F - test-leaky-get-or-insert-slice/5"/imm32 68/push "code"/imm32 ff 6/subop/push 1/mod/*+disp8 1/rm32/ECX . . . . 0xc/disp8 . # push *(ECX+12) # . . call e8/call check-string-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP $test-leaky-get-or-insert-slice:third-call: # - insert a new key, verify that it was inserted # (EAX..EDX) = "data" b8/copy-to-EAX "data"/imm32 8b/copy 0/mod/indirect 0/rm32/EAX . . . 2/r32/EDX . . # copy *EAX to EDX 8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/EAX 2/index/EDX . 2/r32/EDX 4/disp8 . # copy EAX+EDX+4 to EDX 05/add-to-EAX 4/imm32 # var slice/EDX = {EAX, EDX} 52/push-EDX 50/push-EAX 89/copy 3/mod/direct 2/rm32/EDX . . . 4/r32/ESP . . # copy ESP to EDX # EAX = leaky-get-or-insert-slice(table, "data" slice, 8 bytes per row) # . . push args 68/push 8/imm32/row-size 52/push-EDX 51/push-ECX # . . call e8/call leaky-get-or-insert-slice/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP # table gets a new row # check-ints-equal(EAX - table->data, 12, msg) # second row's value slot returned # . check-ints-equal(EAX - table, 24, msg) # . . push args 68/push "F - test-leaky-get-or-insert-slice/6"/imm32 68/push 0x18/imm32 29/subtract 3/mod/direct 0/rm32/EAX . . . 1/r32/ECX . . # subtract ECX from EAX 50/push-EAX # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP # check-ints-equal(table->write, 2 rows = 16, msg) # . . push args 68/push "F - test-leaky-get-or-insert-slice/7"/imm32 68/push 0x10/imm32/two-rows ff 6/subop/push 0/mod/indirect 1/rm32/ECX . . . . . . # push *ECX # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP # check-string-equal(*table->data+8, "data", msg) # check-string-equal(*(table+20), "data", msg) # . . push args 68/push "F - test-leaky-get-or-insert-slice/8"/imm32 68/push "data"/imm32 ff 6/subop/push 1/mod/*+disp8 1/rm32/ECX . . . . 0x14/disp8 . # push *(ECX+20) # . . call e8/call check-string-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP $test-leaky-get-or-insert-slice:end: # . epilog 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP 5d/pop-to-EBP c3/return # if no row is found, stop(ed) get-or-stop: # table : (address stream {string, _}), key : (address string), row-size : int, # abort-message-prefix : (address string), err : (address buffered-file), ed : (address exit-descriptor) # -> EAX : (address _) # pseudocode: # curr = table->data # max = &table->data[table->write] # while curr < max # if string-equal?(key, *curr) # return curr+4 # curr += row-size # write-buffered(err, msg) # stop(ed) # # . prolog 55/push-EBP 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP # . save registers 51/push-ECX 52/push-EDX 56/push-ESI # ESI = table 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 6/r32/ESI 8/disp8 . # copy *(EBP+8) to ESI # curr/ECX = table->data 8d/copy-address 1/mod/*+disp8 6/rm32/ESI . . . 1/r32/ECX 0xc/disp8 . # copy ESI+12 to ECX # max/EDX = table->data + table->write 8b/copy 0/mod/indirect 6/rm32/ESI . . . 2/r32/EDX . . # copy *ESI to EDX 8d/copy-address 0/mod/indirect 4/rm32/sib 1/base/ECX 2/index/EDX . 2/r32/EDX . . # copy ECX+EDX to EDX $get-or-stop:search-loop: # if (curr >= max) stop(ed) 39/compare 3/mod/direct 1/rm32/ECX . . . 2/r32/EDX . . # compare ECX with EDX 73/jump-if-greater-or-equal-unsigned $get-or-stop:stop/disp8 # if (string-equal?(key, *curr)) return curr+4 # . EAX = string-equal?(key, *curr) # . . push args ff 6/subop/push 0/mod/indirect 1/rm32/ECX . . . . . . # push *ECX ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12) # . . call e8/call string-equal?/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # . if (EAX != 0) return EAX = curr+4 3d/compare-EAX-and 0/imm32 74/jump-if-equal $get-or-stop:mismatch/disp8 8d/copy-address 1/mod/*+disp8 1/rm32/ECX . . . 0/r32/EAX 4/disp8 . # copy ECX+4 to EAX eb/jump $get-or-stop:end/disp8 $get-or-stop:mismatch: # curr += row-size 03/add 1/mod/*+disp8 5/rm32/EBP . . . 1/r32/ECX 0x10/disp8 . # add *(EBP+16) to ECX # loop eb/jump $get-or-stop:search-loop/disp8 $get-or-stop:end: # . restore registers 5e/pop-to-ESI 5a/pop-to-EDX 59/pop-to-ECX # . epilog 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP 5d/pop-to-EBP c3/return $get-or-stop:stop: # . write-buffered(err, abort-message-prefix) # . . push args ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0x14/disp8 . # push *(EBP+20) ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0x18/disp8 . # push *(EBP+24) # . . call e8/call write-buffered/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # . write-buffered(err, error) # . . push args 68/push ": get-or-stop: key not found: "/imm32 ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0x18/disp8 . # push *(EBP+24) # . . call e8/call write-buffered/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # . write-buffered(err, key) # . . push args ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12) ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0x18/disp8 . # push *(EBP+24) # . . call e8/call write-buffered/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # . write-buffered(err, "\n") # . . push args 68/push "\n"/imm32 ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0x18/disp8 . # push *(EBP+24) # . . call e8/call write-buffered/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # . stop(ed, 1) # . . push args 68/push 1/imm32 ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0x1c/disp8 . # push *(EBP+28) # . . call e8/call stop/disp32 # never gets here $get-or-stop:terminus: # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # syscall(exit, 1) b8/copy-to-EAX 1/imm32/exit cd/syscall 0x80/imm8 test-get-or-stop: # This test uses exit-descriptors. Use EBP for setting up local variables. # . prolog 55/push-EBP 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP # setup # . clear-stream(_test-error-stream) # . . push args 68/push _test-error-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-error-buffered-file+4) # . . push args b8/copy-to-EAX _test-error-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 # var table/ECX : (address stream {string, number}) = stream(2 rows * 8 bytes) 81 5/subop/subtract 3/mod/direct 4/rm32/ESP . . . . . 0x10/imm32 # subtract from ESP 68/push 0x10/imm32/length 68/push 0/imm32/read 68/push 0/imm32/write 89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX # var ed/EDX : (address exit-descriptor) 68/push 0/imm32 68/push 0/imm32 89/copy 3/mod/direct 2/rm32/EDX . . . 4/r32/ESP . . # copy ESP to EDX # size 'ed' for the calls to 'get-or-stop' # . tailor-exit-descriptor(ed, 24) # . . push args 68/push 0x18/imm32/nbytes-of-args-for-get-or-stop 52/push-EDX # . . call e8/call tailor-exit-descriptor/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # insert(table, "code", 8 bytes per row) # . . push args 68/push 8/imm32/row-size 68/push "code"/imm32 51/push-ECX # . . call e8/call get-or-insert/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP $test-get-or-stop:success: # EAX = get-or-stop(table, "code", row-size=8, msg, _test-error-buffered-file, ed) # . . push args 52/push-EDX/ed 68/push _test-error-buffered-file/imm32 68/push "foo"/imm32/abort-prefix 68/push 8/imm32/row-size 68/push "code"/imm32 51/push-ECX # . . call e8/call get-or-stop/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0x18/imm32 # add to ESP $test-get-or-stop:success-assertion: # check-ints-equal(EAX - table->data, 4, msg) # . check-ints-equal(EAX - table, 16, msg) # . . push args 68/push "F - test-get-or-stop/0"/imm32 68/push 0x10/imm32 29/subtract 3/mod/direct 0/rm32/EAX . . . 1/r32/ECX . . # subtract ECX from EAX 50/push-EAX # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP $test-get-or-stop:failure: # EAX = get-or-stop(table, "data", row-size=8, msg, _test-error-buffered-file, ed) # . . push args 52/push-EDX/ed 68/push _test-error-buffered-file/imm32 68/push "foo"/imm32/abort-prefix 68/push 8/imm32/row-size 68/push "data"/imm32 51/push-ECX # . . call e8/call get-or-stop/disp32 # registers except ESP may be clobbered at this point # restore register args, discard others 59/pop-to-ECX 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0x10/imm32 # add to ESP 5a/pop-to-EDX $test-get-or-stop:failure-assertion: # check that get-or-stop tried to call stop(1) # . check-ints-equal(ed->value, 2, msg) # . . push args 68/push "F - test-get-or-stop/1"/imm32 68/push 2/imm32 # . . push ed->value ff 6/subop/push 1/mod/*+disp8 2/rm32/EDX . . . . 4/disp8 . # push *(EDX+4) # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP $test-get-or-stop:end: # . epilog # don't restore ESP from EBP; manually reclaim locals 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0x24/imm32 # add to ESP 5d/pop-to-EBP c3/return # if no row is found, stop(ed) get-slice-or-stop: # table : (address stream {string, _}), key : (address slice), row-size : int, # abort-message-prefix : (address string), err : (address buffered-file), ed : (address exit-descriptor) # -> EAX : (address _) # pseudocode: # curr = table->data # max = &table->data[table->write] # while curr < max # if slice-equal?(key, *curr) # return curr+4 # curr += row-size # write-buffered(err, msg) # stop(ed) # # . prolog 55/push-EBP 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP # . save registers 51/push-ECX 52/push-EDX 56/push-ESI # ESI = table 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 6/r32/ESI 8/disp8 . # copy *(EBP+8) to ESI # curr/ECX = table->data 8d/copy-address 1/mod/*+disp8 6/rm32/ESI . . . 1/r32/ECX 0xc/disp8 . # copy ESI+12 to ECX # max/EDX = table->data + table->write 8b/copy 0/mod/indirect 6/rm32/ESI . . . 2/r32/EDX . . # copy *ESI to EDX 8d/copy-address 0/mod/indirect 4/rm32/sib 1/base/ECX 2/index/EDX . 2/r32/EDX . . # copy ECX+EDX to EDX $get-slice-or-stop:search-loop: # if (curr >= max) stop(ed) 39/compare 3/mod/direct 1/rm32/ECX . . . 2/r32/EDX . . # compare ECX with EDX 73/jump-if-greater-or-equal-unsigned $get-slice-or-stop:stop/disp8 # if (slice-equal?(key, *curr)) return curr+4 # . EAX = slice-equal?(key, *curr) # . . push args ff 6/subop/push 0/mod/indirect 1/rm32/ECX . . . . . . # push *ECX ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12) # . . call e8/call slice-equal?/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # . if (EAX != 0) return EAX = curr+4 3d/compare-EAX-and 0/imm32 74/jump-if-equal $get-slice-or-stop:mismatch/disp8 8d/copy-address 1/mod/*+disp8 1/rm32/ECX . . . 0/r32/EAX 4/disp8 . # copy ECX+4 to EAX eb/jump $get-slice-or-stop:end/disp8 $get-slice-or-stop:mismatch: # curr += row-size 03/add 1/mod/*+disp8 5/rm32/EBP . . . 1/r32/ECX 0x10/disp8 . # add *(EBP+16) to ECX # loop eb/jump $get-slice-or-stop:search-loop/disp8 $get-slice-or-stop:end: # . restore registers 5e/pop-to-ESI 5a/pop-to-EDX 59/pop-to-ECX # . epilog 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP 5d/pop-to-EBP c3/return $get-slice-or-stop:stop: # . write-buffered(err, abort-message-prefix) # . . push args ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0x14/disp8 . # push *(EBP+20) ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0x18/disp8 . # push *(EBP+24) # . . call e8/call write-buffered/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # . write-buffered(err, error) # . . push args 68/push ": get-slice-or-stop: key not found: "/imm32 ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0x18/disp8 . # push *(EBP+24) # . . call e8/call write-buffered/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # . write-slice-buffered(err, key) # . . push args ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12) ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0x18/disp8 . # push *(EBP+24) # . . call e8/call write-slice-buffered/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # . write-buffered(err, "\n") # . . push args 68/push "\n"/imm32 ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0x18/disp8 . # push *(EBP+24) # . . call e8/call write-buffered/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # . stop(ed, 1) # . . push args 68/push 1/imm32 ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0x1c/disp8 . # push *(EBP+28) # . . call e8/call stop/disp32 # never gets here $get-slice-or-stop:terminus: # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # syscall(exit, 1) b8/copy-to-EAX 1/imm32/exit cd/syscall 0x80/imm8 test-get-slice-or-stop: # This test uses exit-descriptors. Use EBP for setting up local variables. # . prolog 55/push-EBP 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP # setup # . clear-stream(_test-error-stream) # . . push args 68/push _test-error-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-error-buffered-file+4) # . . push args b8/copy-to-EAX _test-error-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 # var table/ECX : (address stream {string, number}) = stream(2 rows * 8 bytes) 81 5/subop/subtract 3/mod/direct 4/rm32/ESP . . . . . 0x10/imm32 # subtract from ESP 68/push 0x10/imm32/length 68/push 0/imm32/read 68/push 0/imm32/write 89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX # var ed/EDX : (address exit-descriptor) 68/push 0/imm32 68/push 0/imm32 89/copy 3/mod/direct 2/rm32/EDX . . . 4/r32/ESP . . # copy ESP to EDX # var slice/EBX = "code" # . (EAX..EBX) = "code" b8/copy-to-EAX "code"/imm32 8b/copy 0/mod/indirect 0/rm32/EAX . . . 3/r32/EBX . . # copy *EAX to EBX 8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/EAX 3/index/EBX . 3/r32/EBX 4/disp8 . # copy EAX+EBX+4 to EBX 05/add-to-EAX 4/imm32 # . EBX = {EAX, EBX} 53/push-EBX 50/push-EAX 89/copy 3/mod/direct 3/rm32/EBX . . . 4/r32/ESP . . # copy ESP to EBX # size 'ed' for the calls to 'get-or-stop' (define no locals past this point) # . tailor-exit-descriptor(ed, 24) # . . push args 68/push 0x18/imm32/nbytes-of-args-for-get-or-stop 52/push-EDX # . . call e8/call tailor-exit-descriptor/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # insert(table, "code", 8 bytes per row) # . . push args 68/push 8/imm32/row-size 68/push "code"/imm32 51/push-ECX # . . call e8/call get-or-insert/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP $test-get-slice-or-stop:success: # EAX = get-slice-or-stop(table, slice, row-size=8, msg, _test-error-buffered-file, ed) # . . push args 52/push-EDX/ed 68/push _test-error-buffered-file/imm32 68/push "foo"/imm32/abort-prefix 68/push 8/imm32/row-size 53/push-EBX/slice 51/push-ECX # . . call e8/call get-slice-or-stop/disp32 # registers except ESP may be clobbered at this point # restore register args, discard others 59/pop-to-ECX 5b/pop-to-EBX 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP 5a/pop-to-EDX $test-get-slice-or-stop:success-assertion: # check-ints-equal(EAX - table->data, 4, msg) # first row's value slot returned # . check-ints-equal(EAX - table, 16, msg) # . . push args 68/push "F - test-get-slice-or-stop/0"/imm32 68/push 0x10/imm32 29/subtract 3/mod/direct 0/rm32/EAX . . . 1/r32/ECX . . # subtract ECX from EAX 50/push-EAX # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP $test-get-slice-or-stop:failure: # slice = "segment2" # . *EBX = "segment2"->data b8/copy-to-EAX "segment2"/imm32 05/add-to-EAX 4/imm32 89/copy 0/mod/indirect 3/rm32/EBX . . . 0/r32/EAX . . # copy EAX to *EBX # . *(EBX+4) = "segment2"->data + len("segment2") 05/add-to-EAX 8/imm32/strlen 89/copy 1/mod/*+disp8 3/rm32/EBX . . . 0/r32/EAX 4/disp8 . # copy EAX to *(EBX+4) # EAX = get-slice-or-stop(table, slice, row-size=8, msg, _test-error-buffered-file, ed) # . . push args 52/push-EDX/ed 68/push _test-error-buffered-file/imm32 68/push "foo"/imm32/abort-prefix 68/push 8/imm32/row-size 53/push-EBX/slice 51/push-ECX # . . call e8/call get-slice-or-stop/disp32 # registers except ESP may be clobbered at this point # restore register args, discard others 59/pop-to-ECX 5b/pop-to-EBX 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP 5a/pop-to-EDX $test-get-slice-or-stop:failure-assertion: # check that get-or-stop tried to call stop(1) # . check-ints-equal(ed->value, 2, msg) # . . push args 68/push "F - test-get-or-stop/1"/imm32 68/push 2/imm32 # . . push ed->value ff 6/subop/push 1/mod/*+disp8 2/rm32/EDX . . . . 4/disp8 . # push *(EDX+4) # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP $test-get-slice-or-stop:end: # . epilog # don't restore ESP from EBP; manually reclaim locals 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0x2c/imm32 # add to ESP 5d/pop-to-EBP c3/return # if no row is found, return null (0) maybe-get: # table : (address stream {string, _}), key : (address string), row-size : int -> EAX : (address _) # pseudocode: # curr = table->data # max = &table->data[table->write] # while curr < max # if string-equal?(key, *curr) # return curr+4 # curr += row-size # return 0 # # . prolog 55/push-EBP 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP # . save registers 51/push-ECX 52/push-EDX 56/push-ESI # ESI = table 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 6/r32/ESI 8/disp8 . # copy *(EBP+8) to ESI # curr/ECX = table->data 8d/copy-address 1/mod/*+disp8 6/rm32/ESI . . . 1/r32/ECX 0xc/disp8 . # copy ESI+12 to ECX # max/EDX = table->data + table->write 8b/copy 0/mod/indirect 6/rm32/ESI . . . 2/r32/EDX . . # copy *ESI to EDX 8d/copy-address 0/mod/indirect 4/rm32/sib 1/base/ECX 2/index/EDX . 2/r32/EDX . . # copy ECX+EDX to EDX $maybe-get:search-loop: # if (curr >= max) return null 39/compare 3/mod/direct 1/rm32/ECX . . . 2/r32/EDX . . # compare ECX with EDX 73/jump-if-greater-or-equal-unsigned $maybe-get:null/disp8 # if (string-equal?(key, *curr)) return curr+4 # . EAX = string-equal?(key, *curr) # . . push args ff 6/subop/push 0/mod/indirect 1/rm32/ECX . . . . . . # push *ECX ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12) # . . call e8/call string-equal?/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # . if (EAX != 0) return EAX = curr+4 3d/compare-EAX-and 0/imm32 74/jump-if-equal $maybe-get:mismatch/disp8 8d/copy-address 1/mod/*+disp8 1/rm32/ECX . . . 0/r32/EAX 4/disp8 . # copy ECX+4 to EAX eb/jump $maybe-get:end/disp8 $maybe-get:mismatch: # curr += row-size 03/add 1/mod/*+disp8 5/rm32/EBP . . . 1/r32/ECX 0x10/disp8 . # add *(EBP+16) to ECX # loop eb/jump $maybe-get:search-loop/disp8 $maybe-get:null: b8/copy-to-EAX 0/imm32 $maybe-get:end: # . restore registers 5e/pop-to-ESI 5a/pop-to-EDX 59/pop-to-ECX # . epilog 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP 5d/pop-to-EBP c3/return test-maybe-get: # . prolog 55/push-EBP 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP # - setup: create a table with one row # var table/ECX : (address stream {string, number}) = stream(2 rows * 8 bytes) 81 5/subop/subtract 3/mod/direct 4/rm32/ESP . . . . . 0x10/imm32 # subtract from ESP 68/push 0x10/imm32/length 68/push 0/imm32/read 68/push 0/imm32/write 89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX # EAX = get-or-insert(table, "code", 8 bytes per row) # . . push args 68/push 8/imm32/row-size 68/push "code"/imm32 51/push-ECX # . . call e8/call get-or-insert/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP $test-maybe-get:success: # - check for the same key, verify that it was reused # EAX = maybe-get(table, "code", 8 bytes per row) # . . push args 68/push 8/imm32/row-size 68/push "code"/imm32 51/push-ECX # . . call e8/call maybe-get/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP # check-ints-equal(EAX - table->data, 4, msg) # . check-ints-equal(EAX - table, 16, msg) # . . push args 68/push "F - test-maybe-get/0"/imm32 68/push 0x10/imm32 29/subtract 3/mod/direct 0/rm32/EAX . . . 1/r32/ECX . . # subtract ECX from EAX 50/push-EAX # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP # no new row inserted # . check-ints-equal(table->write, row-size = 8, msg) # . . push args 68/push "F - test-maybe-get/1"/imm32 68/push 8/imm32/row-size ff 6/subop/push 0/mod/indirect 1/rm32/ECX . . . . . . # push *ECX # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP # check-string-equal(*table->data, "code", msg) # . . push args 68/push "F - test-maybe-get/2"/imm32 68/push "code"/imm32 ff 6/subop/push 1/mod/*+disp8 1/rm32/ECX . . . . 0xc/disp8 . # push *(ECX+12) # . . call e8/call check-string-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP $test-maybe-get:failure: # - search for a new key # EAX = maybe-get(table, "data", 8 bytes per row) # . . push args 68/push 8/imm32/row-size 68/push "data"/imm32 51/push-ECX # . . call e8/call maybe-get/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP # check-ints-equal(EAX, 0, msg) # . . push args 68/push "F - test-maybe-get/3"/imm32 68/push 0/imm32 50/push-EAX # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP $test-maybe-get:end: # . epilog 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP 5d/pop-to-EBP c3/return # if no row is found, return null (0) maybe-get-slice: # table : (address stream {string, _}), key : (address slice), row-size : int -> EAX : (address _) # pseudocode: # curr = table->data # max = &table->data[table->write] # while curr < max # if slice-equal?(key, *curr) # return curr+4 # curr += row-size # return 0 # # . prolog 55/push-EBP 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP # . save registers 51/push-ECX 52/push-EDX 56/push-ESI # ESI = table 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 6/r32/ESI 8/disp8 . # copy *(EBP+8) to ESI # curr/ECX = table->data 8d/copy-address 1/mod/*+disp8 6/rm32/ESI . . . 1/r32/ECX 0xc/disp8 . # copy ESI+12 to ECX # max/EDX = table->data + table->write 8b/copy 0/mod/indirect 6/rm32/ESI . . . 2/r32/EDX . . # copy *ESI to EDX 8d/copy-address 0/mod/indirect 4/rm32/sib 1/base/ECX 2/index/EDX . 2/r32/EDX . . # copy ECX+EDX to EDX $maybe-get-slice:search-loop: # if (curr >= max) return null 39/compare 3/mod/direct 1/rm32/ECX . . . 2/r32/EDX . . # compare ECX with EDX 73/jump-if-greater-or-equal-unsigned $maybe-get-slice:null/disp8 # if (slice-equal?(key, *curr)) return curr+4 # . EAX = slice-equal?(key, *curr) # . . push args ff 6/subop/push 0/mod/indirect 1/rm32/ECX . . . . . . # push *ECX ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12) # . . call e8/call slice-equal?/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # . if (EAX != 0) return EAX = curr+4 3d/compare-EAX-and 0/imm32 74/jump-if-equal $maybe-get-slice:mismatch/disp8 8d/copy-address 1/mod/*+disp8 1/rm32/ECX . . . 0/r32/EAX 4/disp8 . # copy ECX+4 to EAX eb/jump $maybe-get-slice:end/disp8 $maybe-get-slice:mismatch: # curr += row-size 03/add 1/mod/*+disp8 5/rm32/EBP . . . 1/r32/ECX 0x10/disp8 . # add *(EBP+16) to ECX # loop eb/jump $maybe-get-slice:search-loop/disp8 $maybe-get-slice:null: b8/copy-to-EAX 0/imm32 $maybe-get-slice:end: # . restore registers 5e/pop-to-ESI 5a/pop-to-EDX 59/pop-to-ECX # . epilog 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP 5d/pop-to-EBP c3/return test-maybe-get-slice: # . prolog 55/push-EBP 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP # - setup: create a table with one row # var table/ECX : (address stream {string, number}) = stream(2 rows * 8 bytes) 81 5/subop/subtract 3/mod/direct 4/rm32/ESP . . . . . 0x10/imm32 # subtract from ESP 68/push 0x10/imm32/length 68/push 0/imm32/read 68/push 0/imm32/write 89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX # insert(table, "code", 8 bytes per row) # . . push args 68/push 8/imm32/row-size 68/push "code"/imm32 51/push-ECX # . . call e8/call get-or-insert/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP $test-maybe-get-slice:success: # - check for the same key, verify that it was reused # (EAX..EDX) = "code" b8/copy-to-EAX "code"/imm32 8b/copy 0/mod/indirect 0/rm32/EAX . . . 2/r32/EDX . . # copy *EAX to EDX 8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/EAX 2/index/EDX . 2/r32/EDX 4/disp8 . # copy EAX+EDX+4 to EDX 05/add-to-EAX 4/imm32 # var slice/EDX = {EAX, EDX} 52/push-EDX 50/push-EAX 89/copy 3/mod/direct 2/rm32/EDX . . . 4/r32/ESP . . # copy ESP to EDX # EAX = maybe-get-slice(table, "code" slice, 8 bytes per row) # . . push args 68/push 8/imm32/row-size 52/push-EDX 51/push-ECX # . . call e8/call maybe-get-slice/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP # check-ints-equal(EAX - table->data, 4, msg) # . check-ints-equal(EAX - table, 16, msg) # . . push args 68/push "F - test-maybe-get-slice/0"/imm32 68/push 0x10/imm32 29/subtract 3/mod/direct 0/rm32/EAX . . . 1/r32/ECX . . # subtract ECX from EAX 50/push-EAX # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP # no new row inserted # . check-ints-equal(table->write, row-size = 8, msg) # . . push args 68/push "F - test-maybe-get-slice/1"/imm32 68/push 8/imm32/row-size ff 6/subop/push 0/mod/indirect 1/rm32/ECX . . . . . . # push *ECX # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP # check-string-equal(*table->data, "code", msg) # . . push args 68/push "F - test-maybe-get-slice/2"/imm32 68/push "code"/imm32 ff 6/subop/push 1/mod/*+disp8 1/rm32/ECX . . . . 0xc/disp8 . # push *(ECX+12) # . . call e8/call check-string-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP $test-maybe-get-slice:failure: # - search for a new key # (EAX..EDX) = "data" b8/copy-to-EAX "data"/imm32 8b/copy 0/mod/indirect 0/rm32/EAX . . . 2/r32/EDX . . # copy *EAX to EDX 8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/EAX 2/index/EDX . 2/r32/EDX 4/disp8 . # copy EAX+EDX+4 to EDX 05/add-to-EAX 4/imm32 # var slice/EDX = {EAX, EDX} 52/push-EDX 50/push-EAX 89/copy 3/mod/direct 2/rm32/EDX . . . 4/r32/ESP . . # copy ESP to EDX # EAX = maybe-get-slice(table, "data" slice, 8 bytes per row) # . . push args 68/push 8/imm32/row-size 52/push-EDX 51/push-ECX # . . call e8/call maybe-get-slice/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP # check-ints-equal(EAX, 0, msg) # . . push args 68/push "F - test-maybe-get-slice/3"/imm32 68/push 0/imm32 50/push-EAX # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP $test-maybe-get-slice:end: # . epilog 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP 5d/pop-to-EBP c3/return # . . vim:nowrap:textwidth=0