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# Copyright (C) 2009, 2010  Roman Zimbelmann <romanz@lavabit.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

NAME = ranger
VERSION = 1.0.4
PYTHON ?= python
DOCDIR ?= doc/pydoc
PREFIX ?= /usr
MANPREFIX ?= /share/man
PYOPTIMIZE ?= 1
PYTHON_SITE_DEST ?= $(shell $(PYTHON) -c 'import sys; sys.stdout.write( \
	[p for p in sys.path if "site" in p][0])' 2> /dev/null)
BMCOUNT ?= 5  # how often to run the benchmarks?

CWD = $(shell pwd)

default: compile
	@echo 'Run `make options` for a list of all options'

options: help
	@echo
	@echo 'Options:'
	@echo 'PYTHON = $(PYTHON)'
	@echo 'PYOPTIMIZE = $(PYOPTIMIZE)'
	@echo 'PYTHON_SITE_DEST = $(PYTHON_SITE_DEST)'
	@echo 'PREFIX = $(PREFIX)'
	@echo 'MANPREFIX = $(MANPREFIX)'
	@echo 'DOCDIR = $(DOCDIR)'

help:
	@echo 'make: Compile $(NAME)'
	@echo 'make doc: Create the pydoc documentation'
	@echo 'make install: Install ranger'
	@echo 'make clean: Remove the compiled files (*.pyc, *.pyo)'
	@echo 'make cleandoc: Remove the pydoc documentation'
	@echo 'make uninstall: Uninstall ranger'
	@echo 'make snapshot: Create a tar.gz of the current git revision'
	@echo 'make test: Run all unittests.'

all: test compile install

install:
	@if [ '$(PYTHON_SITE_DEST)' == '' ]; then \
		echo -n 'Cannot find a suitable destination for the files.'; \
		echo '  Please install $(NAME) manually.'; \
		false; \
	fi
	@echo "Installing $(NAME) version $(VERSION)..."
	@mkdir -p $(DESTDIR)$(PREFIX)/bin
	cp -f ranger.py $(DESTDIR)$(PREFIX)/bin/ranger
	@mkdir -p $(DESTDIR)$(PYTHON_SITE_DEST)
	cp -fruT ranger $(DESTDIR)$(PYTHON_SITE_DEST)/ranger
	@chmod 755 $(DESTDIR)$(PREFIX)/bin/ranger
	@chmod -R +rX $(DESTDIR)$(PYTHON_SITE_DEST)/ranger
	@mkdir -p $(DESTDIR)$(PREFIX)$(MANPREFIX)/man1
	cp -f doc/ranger.1 $(DESTDIR)$(PREFIX)$(MANPREFIX)/man1/ranger.1
	@chmod 644 $(DESTDIR)$(PREFIX)$(MANPREFIX)/man1/ranger.1

uninstall:
	rm -f $(PREFIX)/bin/ranger
	rm -f '$(PREFIX)$(MANPREFIX)/man1/ranger.1'
	@if [ '$(PYTHON_SITE_DEST)' == '' ]; then \
		echo 'Cannot find a possible location of rangers library files'; \
		false; \
	fi
	rm -rf '$(PYTHON_SITE_DEST)/ranger/*'
	@echo 'NOTE: By default, configuration files are stored at "~/.ranger".'
	@echo 'This script will not delete those.'

compile: clean
	@echo 'Compiling...'
	PYTHONOPTIMIZE=$(PYOPTIMIZE) $(PYTHON) -m compileall -q ranger

clean:
	@echo 'Cleaning...'
	find . -regex .\*.py[co]\$$ -exec rm -f -- {} \;

doc: cleandoc
	@echo 'Creating pydoc html documentation...'
	mkdir -p $(DOCDIR)
	cd $(DOCDIR); \
		$(PYTHON) -c 'import pydoc, sys; \
		sys.path[0] = "$(CWD)"; \
		pydoc.writedocs("$(CWD)")'

cleandoc:
	@echo 'Removing pydoc html documentation...'
	test -d $(DOCDIR) && rm -f -- $(DOCDIR)/*.html

test:
	@$(PYTHON) all_tests.py 1

bm:
	@$(PYTHON) all_benchmarks.py $(BMCOUNT)

snapshot:
	git archive HEAD | gzip > $(NAME)-$(VERSION)-$(shell git rev-parse HEAD | cut -b 1-8).tar.gz

.PHONY: default options all compile clean doc cleandoc test bm \
	install uninstall snapshot
names to lowercase' href='/akkartik/mu/commit/apps/handle.subx?h=hlt&id=333525360b22f3d3ea31db46a4d2f1b4edbfebdb'>33352536 ^
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# A sketch of Mu-style handles or kinda-safe pointers, that add a modicum of
# checking to dynamically allocated memory.
#
# This approach avoids using 'allocate' directly in favor of two primitives:
#   - 'new', which allocates some space (the 'payload'), stores the address
#     along with an opaque 'alloc id' in a 'handle', and prepends the same
#     alloc id to the payload.
#   - 'lookup', which checks that the alloc id at the start of a handle matches
#     the alloc id at the start of the payload before returning the address.
#
# Layout of a handle:
#   offset 0: alloc id
#   offset 4: address
#
# To run:
#   $ ./bootstrap translate init.linux 0*.subx apps/handle.subx -o apps/handle
#   $ ./bootstrap run apps/handle
# Expected result is a successful lookup followed by a hard abort:
#   lookup succeeded
#   lookup failed
# (This file is a prototype. The 'tests' in it aren't real; failures are
# expected.)

== code
#   instruction                     effective address                                                   register    displacement    immediate
# . op          subop               mod             rm32          base        index         scale       r32
# . 1-3 bytes   3 bits              2 bits          3 bits        3 bits      3 bits        2 bits      2 bits      0/1/2/4 bytes   0/1/2/4 bytes

Entry:
    # initialize heap
    # . Heap = new-segment(Heap-size)
    # . . push args
    68/push  Heap/imm32
    ff          6/subop/push        0/mod/indirect  5/rm32/.disp32            .             .           .           Heap-size/disp32                  # push *Heap-size
    # . . call
    e8/call  new-segment/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               8/imm32           # add to esp

    e8/call  run-tests/disp32  # 'run-tests' is a function created automatically by SubX. It calls all functions that start with 'test-'.
$handle-main:end:
    # syscall(exit, Num-test-failures)
    8b/copy                         0/mod/indirect  5/rm32/.disp32            .             .           3/r32/ebx   Num-test-failures/disp32          # copy *Num-test-failures to ebx
    b8/copy-to-eax  1/imm32/exit
    cd/syscall  0x80/imm8

new:  # ad: (addr allocation-descriptor), n: int, out: (handle _)
    # . prologue
    55/push-ebp
    89/copy                         3/mod/direct    5/rm32/ebp    .           .             .           4/r32/esp   .               .                 # copy esp to ebp
    # . save registers
    50/push-eax
    51/push-ecx
    52/push-edx
    # ecx = n+4
    8b/copy                         1/mod/*+disp8   5/rm32/ebp    .           .             .           1/r32/ecx   0xc/disp8       .                 # copy *(ebp+12) to ecx
    81          0/subop/add         3/mod/direct    1/rm32/ecx    .           .             .           .           .               4/imm32           # add to ecx
    # var eax: (handle _) = allocate(ad, ecx)
    # . . push args
    51/push-ecx
    ff          6/subop/push        1/mod/*+disp8   5/rm32/ebp    .           .             .           .           8/disp8         .                 # push *(ebp+8)
    # . . call
    e8/call  allocate/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               8/imm32           # add to esp
    # edx = out
    8b/copy                         1/mod/*+disp8   5/rm32/ebp    .           .             .           2/r32/edx   0x10/disp8      .                 # copy *(ebp+16) to edx
    # out->address = eax
    89/copy                         1/mod/*+disp8   2/rm32/edx    .           .             .           0/r32/eax   4/disp8         .                 # copy eax to *(edx+4)
    # if (eax == 0) out->alloc_id = 0, return
    3d/compare-eax-and  0/imm32
    75/jump-if-!=  $new:continue/disp8
    c7          0/subop/copy        0/mod/indirect  2/rm32/edx    .           .             .           .           .               0/imm32           # copy to *edx
    eb/jump  $new:end/disp8
$new:continue:
    # otherwise:
    # ecx = *Next-alloc-id
    8b/copy                         0/mod/indirect  5/rm32/.disp32            .             .           1/r32/ecx   Next-alloc-id/disp32              # copy *Next-alloc-id to ecx
    # *eax = *Next-alloc-id/ecx
    89/copy                         0/mod/indirect  0/rm32/eax    .           .             .           1/r32/ecx   .               .                 # copy ecx to *eax
    # out->alloc_id = *Next-alloc-id
    89/copy                         0/mod/indirect  2/rm32/edx    .           .             .           1/r32/ecx   .               .                 # copy ecx to *edx
    # increment *Next-alloc-id
    ff          0/subop/increment   0/mod/indirect  5/rm32/.disp32            .             .           .           Next-alloc-id/disp32              # increment *Next-alloc-id
$new:end:
    # . restore registers
    5a/pop-to-edx
    59/pop-to-ecx
    58/pop-to-eax
    # . epilogue
    89/copy                         3/mod/direct    4/rm32/esp    .           .             .           5/r32/ebp   .               .                 # copy ebp to esp
    5d/pop-to-ebp
    c3/return

test-new:
    # . prologue
    55/push-ebp
    89/copy                         3/mod/direct    5/rm32/ebp    .           .             .           4/r32/esp   .               .                 # copy esp to ebp
    # var heap/edx: allocation-descriptor
    68/push  0/imm32/limit
    68/push  0/imm32/curr
    89/copy                         3/mod/direct    2/rm32/edx    .           .             .           4/r32/esp   .               .                 # copy esp to edx
    # heap = new-segment(512)
    # . . push args
    52/push-edx
    68/push  0x200/imm32
    # . . call
    e8/call  new-segment/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               8/imm32           # add to esp
    # *Next-alloc-id = 0x34
    c7          0/subop/copy        0/mod/indirect  5/rm32/.disp32            .             .           .     Next-alloc-id/disp32  0x34/imm32        # copy to *Next-alloc-id
    # var handle/ecx: handle
    68/push  0/imm32/address
    68/push  0/imm32/alloc-id
    89/copy                         3/mod/direct    1/rm32/ecx    .           .             .           4/r32/esp   .               .                 # copy esp to ecx
    # new(heap, 2, handle/ecx)
    # . . push args
    51/push-ecx
    68/push  2/imm32/size
    52/push-edx
    # . . call
    e8/call  new/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               0xc/imm32         # add to esp
    # check-ints-equal(handle->alloc_id, 0x34, msg)
    # . . push args
    68/push  "F - test-new: alloc id of handle"/imm32
    68/push  0x34/imm32
    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-ints-equal(*handle->address, 0x34, msg)
    # . . push args
    68/push  "F - test-new: alloc id of payload"/imm32
    68/push  0x34/imm32
    8b/copy                         1/mod/*+disp8   1/rm32/ecx    .           .             .           2/r32/edx   4/disp8         .                 # copy *(ecx+4) to edx
    ff          6/subop/push        0/mod/indirect  2/rm32/edx    .           .             .           .           .               .                 # push *edx
    # . . 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(*Next-alloc-id, 0x35)
    # . . push args
    68/push  "F - test-new: next alloc id"/imm32
    68/push  0x35/imm32
    ff          6/subop/push        0/mod/indirect  5/rm32/.disp32            .             .           .           Next-alloc-id/disp32              # copy to *Next-alloc-id
    # . . call
    e8/call  check-ints-equal/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               0xc/imm32         # add to esp
    # clean up
    # . *Next-alloc-id = 1
    c7          0/subop/copy        0/mod/indirect  5/rm32/.disp32            .             .           .     Next-alloc-id/disp32  1/imm32           # copy to *Next-alloc-id
    # . epilogue
    89/copy                         3/mod/direct    4/rm32/esp    .           .             .           5/r32/ebp   .               .                 # copy ebp to esp
    5d/pop-to-ebp
    c3/return

_pending-test-new-failure:
    # . prologue
    55/push-ebp
    89/copy                         3/mod/direct    5/rm32/ebp    .           .             .           4/r32/esp   .               .                 # copy esp to ebp
    # . *Next-alloc-id = 0x34
    c7          0/subop/copy        0/mod/indirect  5/rm32/.disp32            .             .           .           Next-alloc-id/disp32  0x34/imm32  # copy to *Next-alloc-id
    # define an allocation-descriptor with no space left
    # . var ad/eax: allocation-descriptor = {0x10, 0x10}
    68/push  0x10/imm32/limit
    68/push  0x10/imm32/curr
    89/copy                         3/mod/direct    0/rm32/eax    .           .             .           4/r32/esp   .               .                 # copy esp to eax
    # . var handle/ecx = {random, random}
    68/push  1234/imm32/address
    68/push  5678/imm32/alloc-id
    89/copy                         3/mod/direct    1/rm32/ecx    .           .             .           4/r32/esp   .               .                 # copy esp to ecx
    # try to allocate
    # . new(ad, 2, handle/ecx)
    # . . push args
    51/push-ecx
    68/push  2/imm32/size
    50/push-eax
    # . . call
    e8/call  new/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               0xc/imm32         # add to esp
    # handle should be cleared
    # . check-ints-equal(handle->alloc_id, 0, msg)
    # . . push args
    68/push  "F - test-new-failure: alloc id of handle"/imm32
    68/push  0/imm32
    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-ints-equal(handle->address, 0, msg)
    # . . push args
    68/push  "F - test-new-failure: address of handle"/imm32
    68/push  0/imm32
    ff          6/subop/push        1/mod/*+disp8   1/rm32/ecx    .           .             .           .           4/disp8         .                 # push *(ecx+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
    # Next-alloc-id should be unmodified
    # . check-ints-equal(*Next-alloc-id, 0x34)
    # . . push args
    68/push  "F - test-new-failure: next alloc id"/imm32
    68/push  0x34/imm32
    ff          6/subop/push        0/mod/indirect  5/rm32/.disp32            .             .           .           Next-alloc-id/disp32              # copy to *Next-alloc-id
    # . . call
    e8/call  check-ints-equal/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               0xc/imm32         # add to esp
    # clean up
    # . *Next-alloc-id = 1
    c7          0/subop/copy        0/mod/indirect  5/rm32/.disp32            .             .           .     Next-alloc-id/disp32  1/imm32           # copy to *Next-alloc-id
    # . epilogue
    89/copy                         3/mod/direct    4/rm32/esp    .           .             .           5/r32/ebp   .               .                 # copy ebp to esp
    5d/pop-to-ebp
    c3/return

lookup:  # h: (handle T) -> eax: (addr T)
    # . prologue
    55/push-ebp
    89/copy                         3/mod/direct    5/rm32/ebp    .           .             .           4/r32/esp   .               .                 # copy esp to ebp
    # - as a proof of concept for future inlining, uses no general-purpose registers besides the output (eax)
    # eax = handle
    8b/copy                         1/mod/*+disp8   5/rm32/ebp    .           .             .           0/r32/eax   8/disp8         .                 # copy *(ebp+8) to eax
    # - inline {
    # push handle->alloc_id
    ff          6/subop/push        0/mod/indirect  0/rm32/eax    .           .             .           .           .               .                 # push *eax
    # eax = handle->address (payload)
    8b/copy                         1/mod/*+disp8   0/rm32/eax    .           .             .           .           4/disp8         .                 # copy *(eax+4) to eax
    # push handle->address
    50/push-eax
    # eax = payload->alloc_id
    8b/copy                         0/mod/indirect  0/rm32/eax    .           .             .           .           .               .                 # copy *eax to eax
    # if (eax != handle->alloc_id) abort
    39/compare                      1/mod/*+disp8   4/rm32/sib    4/base/esp  4/index/none  .           0/r32/eax   4/disp8         .                 # compare *(esp+4) and eax
    75/jump-if-!=  $lookup:abort/disp8
    # eax = pop handle->address
    58/pop-to-eax
    # discard handle->alloc_id
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               4/imm32           # add to esp
    # add 4
    05/add-to-eax  4/imm32
    # - }
    # - alternative consuming a second register {
#?     # ecx = handle->alloc_id
#?     8b/copy                         0/mod/indirect  0/rm32/eax    .           .             .           1/r32/ecx   .               .                 # copy *eax to ecx
#?     # eax = handle->address (payload)
#?     8b/copy                         1/mod/*+disp8   0/rm32/eax    .           .             .           0/r32/eax   4/disp8         .                 # copy *(eax+4) to eax
#?     # if (ecx != *eax) abort
#?     39/compare                      0/mod/indirect  0/rm32/eax    .           .             .           1/r32/ecx   .               .                 # compare *eax and ecx
#?     75/jump-if-!=  $lookup:abort/disp8
#?     # add 4 to eax
#?     05/add-to-eax  4/imm32
    # - }
    # . epilogue
    89/copy                         3/mod/direct    4/rm32/esp    .           .             .           5/r32/ebp   .               .                 # copy ebp to esp
    5d/pop-to-ebp
    c3/return

$lookup:abort:
    # . _write(2/stderr, msg)
    # . . push args
    68/push  "lookup failed\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/exit-status
    b8/copy-to-eax  1/imm32/exit
    cd/syscall  0x80/imm8

test-lookup-success:
    # . prologue
    55/push-ebp
    89/copy                         3/mod/direct    5/rm32/ebp    .           .             .           4/r32/esp   .               .                 # copy esp to ebp
    # . save registers
    # var heap/ebx: allocation-descriptor
    68/push  0/imm32/limit
    68/push  0/imm32/curr
    89/copy                         3/mod/direct    3/rm32/ebx    .           .             .           4/r32/esp   .               .                 # copy esp to ebx
    # heap = new-segment(512)
    # . . push args
    53/push-ebx
    68/push  0x200/imm32
    # . . call
    e8/call  new-segment/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               8/imm32           # add to esp
    # var handle/ecx: handle
    68/push  0/imm32/address
    68/push  0/imm32/alloc-id
    89/copy                         3/mod/direct    1/rm32/ecx    .           .             .           4/r32/esp   .               .                 # copy esp to ecx
    # var old_top/edx = heap->curr
    8b/copy                         0/mod/indirect  3/rm32/ebx    .           .             .           2/r32/edx   .               .                 # copy *ebx to edx
    # new(heap, 2, handle)
    # . . push args
    51/push-ecx
    68/push  2/imm32/size
    53/push-ebx
    # . . call
    e8/call  new/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               0xc/imm32         # add to esp
    # eax = lookup(handle)
    # . . push args
    51/push-ecx
    # . . call
    e8/call  lookup/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               4/imm32           # add to esp
    # eax contains old top of heap, except skipping the alloc id in the payload
    # . check-ints-equal(eax, old_top+4, msg)
    # . . push args
    68/push  "F - test-lookup-success"/imm32
    81          0/subop/add         3/mod/direct    2/rm32/edx    .           .             .           .           .               4/imm32           # add to edx
    52/push-edx
    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
    # clean up
    # . *Next-alloc-id = 1
    c7          0/subop/copy        0/mod/indirect  5/rm32/.disp32            .             .           .     Next-alloc-id/disp32  1/imm32           # copy to *Next-alloc-id
    # write(2/stderr, "lookup succeeded\n")
    # . . push args
    68/push  "lookup succeeded\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
    # . restore registers
    5a/pop-to-edx
    59/pop-to-ecx
    # . epilogue
    89/copy                         3/mod/direct    4/rm32/esp    .           .             .           5/r32/ebp   .               .                 # copy ebp to esp
    5d/pop-to-ebp
    c3/return

test-lookup-failure:
    # . prologue
    55/push-ebp
    89/copy                         3/mod/direct    5/rm32/ebp    .           .             .           4/r32/esp   .               .                 # copy esp to ebp
    # var heap/esi: allocation-descriptor
    68/push  0/imm32/limit
    68/push  0/imm32/curr
    89/copy                         3/mod/direct    6/rm32/esi    .           .             .           4/r32/esp   .               .                 # copy esp to esi
    # heap = new-segment(512)
    # . . push args
    56/push-esi
    68/push  0x200/imm32
    # . . call
    e8/call  new-segment/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               8/imm32           # add to esp
    # var h1/ecx: handle
    68/push  0/imm32/address
    68/push  0/imm32/alloc-id
    89/copy                         3/mod/direct    1/rm32/ecx    .           .             .           4/r32/esp   .               .                 # copy esp to ecx
    # var old_top/ebx = heap->curr
    8b/copy                         0/mod/indirect  6/rm32/esi    .           .             .           3/r32/ebx   .               .                 # copy *esi to ebx
    # first allocation, to h1
    # . new(heap, 2, h1)
    # . . push args
    51/push-ecx
    68/push  2/imm32/size
    56/push-esi
    # . . call
    e8/call  new/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               0xc/imm32         # add to esp
    # reset heap->curr to mimic reclamation
    89/copy                         0/mod/indirect  6/rm32/esi    .           .             .           3/r32/ebx   .               .                 # copy ebx to *esi
    # second allocation that returns the same address as the first
    # var h2/edx: handle
    68/push  0/imm32/address
    68/push  0/imm32/alloc-id
    89/copy                         3/mod/direct    2/rm32/edx    .           .             .           4/r32/esp   .               .                 # copy esp to edx
    # . new(heap, 2, h2)
    # . . push args
    52/push-edx
    68/push  2/imm32/size
    56/push-esi
    # . . call
    e8/call  new/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               0xc/imm32         # add to esp
    # check-ints-equal(h1->address, h2->address, msg)
    # . . push args
    68/push  "F - test-lookup-failure"/imm32
    ff          6/subop/push        1/mod/*+disp8   2/rm32/ecx    .           .             .           .           4/disp8         .                 # push *(edx+4)
    ff          6/subop/push        1/mod/*+disp8   1/rm32/ecx    .           .             .           .           4/disp8         .                 # push *(ecx+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
    # lookup(h1) should crash
    # . . push args
    51/push-ecx
    # . . call
    e8/call  lookup/disp32
    # should never get past this point
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               4/imm32           # add to esp
    # clean up
    # . *Next-alloc-id = 1
    c7          0/subop/copy        0/mod/indirect  5/rm32/.disp32            .             .           .     Next-alloc-id/disp32  1/imm32           # copy to *Next-alloc-id
    # . epilogue
    89/copy                         3/mod/direct    4/rm32/esp    .           .             .           5/r32/ebp   .               .                 # copy ebp to esp
    5d/pop-to-ebp
    c3/return

== data

# Monotonically increasing counter for calls to 'new'
Next-alloc-id:  # int
    1/imm32

# . . vim:nowrap:textwidth=0