diff options
Diffstat (limited to 'apps')
| -rwxr-xr-x | apps/crenshaw2-1 | bin | 24788 -> 27378 bytes | |||
| -rwxr-xr-x | apps/crenshaw2-1b | bin | 25347 -> 27937 bytes | |||
| -rwxr-xr-x | apps/factorial | bin | 23704 -> 26294 bytes | |||
| -rwxr-xr-x | apps/handle | bin | 24558 -> 27148 bytes | |||
| -rw-r--r-- | apps/subx-common.subx | 921 |
5 files changed, 0 insertions, 921 deletions
diff --git a/apps/crenshaw2-1 b/apps/crenshaw2-1 index 47ee601e..9b0e0c58 100755 --- a/apps/crenshaw2-1 +++ b/apps/crenshaw2-1 Binary files differdiff --git a/apps/crenshaw2-1b b/apps/crenshaw2-1b index fba81a7d..34adc8ea 100755 --- a/apps/crenshaw2-1b +++ b/apps/crenshaw2-1b Binary files differdiff --git a/apps/factorial b/apps/factorial index b82be120..8db732fa 100755 --- a/apps/factorial +++ b/apps/factorial Binary files differdiff --git a/apps/handle b/apps/handle index b6794474..ffaf43b4 100755 --- a/apps/handle +++ b/apps/handle Binary files differdiff --git a/apps/subx-common.subx b/apps/subx-common.subx index abb223fb..be1150c6 100644 --- a/apps/subx-common.subx +++ b/apps/subx-common.subx @@ -24,927 +24,6 @@ Max-labels: # . 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 -# - managing tables -# SubX has rudimentary support for tables. -# -# Each table is a stream of rows. -# -# Each row consists of a 4-byte row (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: -# get(stream, string, row-size) -# aborts if not found -# get-or-insert(stream, string, row-size) -# inserts if not found -# get-slice(stream, slice, row-size) -# aborts if not found -# leaky-get-or-insert-slice(stream, slice, row-size) -# inserts if not found - -# 'table' is a stream of (key, value) rows -# keys are always strings (addresses; size 4 bytes) -# values may be any type, but rows (key+value) always occupy 'row-size' bytes -# scan 'table' for a row with a key 'key' and return the address of the corresponding value -# if no row is found, abort -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 - # 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 - -$get:abort: - # . _write(2/stderr, error) - # . . push args - 68/push "get: key not found: "/imm32 - 68/push 2/imm32/stderr - # . . call - e8/call _write/disp32 - # . . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP - # . _write(2/stderr, key) - # . . push args - ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12) - 68/push 2/imm32/stderr - # . . call - e8/call _write/disp32 - # . . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP - # . _write(2/stderr, "\n") - # . . push args - 68/push "\n"/imm32 - 68/push 2/imm32/stderr - # . . call - e8/call _write/disp32 - # . . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP - # . syscall(exit, 1) - bb/copy-to-EBX 1/imm32 - b8/copy-to-EAX 1/imm32/exit - cd/syscall 0x80/imm8 - # never gets here - -test-get: - # . prolog - 55/push-EBP - 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP - # - setup: create a table with a couple of keys - # var table/ECX : (address stream {string, number}) = stream(2 rows * 8 bytes) - 81 5/subop/subtract 3/mod/direct 4/rm32/ESP . . . . . 0x10/imm32 # subtract from ESP - 68/push 0x10/imm32/length - 68/push 0/imm32/read - 68/push 0/imm32/write - 89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX - # insert(table, "code", 8 bytes per row) - # . . push args - 68/push 8/imm32/row-size - 68/push "code"/imm32 - 51/push-ECX - # . . call - e8/call get-or-insert/disp32 - # . . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP - # insert(table, "data", 8 bytes per row) - # . . push args - 68/push 8/imm32/row-size - 68/push "data"/imm32 - 51/push-ECX - # . . call - e8/call get-or-insert/disp32 - # . . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP -$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 - -# 'table' is a stream of (key, value) rows -# keys are always strings (addresses; size 4 bytes) -# values may be any type, but rows (key+value) always occupy 'row-size' bytes -# scan 'table' for a row with a key 'key' and return the address of the corresponding value -# if no row is found, abort -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 - # 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, 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 - -# 'table' is a stream of (key, value) rows -# keys are always strings (addresses; size 4 bytes) -# values may be any type, but rows (key+value) always occupy 'row-size' bytes -# scan 'table' for a row with a key 'key' and return the address of the corresponding value -# 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 - -# 'table' is a stream of (key, value) rows -# keys are always strings (addresses; size 4 bytes) -# values may be any type, but rows (key+value) always occupy 'row-size' bytes -# scan 'table' for a row with a key 'key' and return the address of the corresponding value -# 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 . . . 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 -$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 - # (re)compute the bounds of the next word in the line # return empty string on reaching end of file next-word: # line : (address stream byte), out : (address slice) |