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cosmopolitan/libc/sysv/systemfive.S

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Polish up repository and other revisions
2020-06-16 13:38:43 +00:00
/*-*- mode:unix-assembly; indent-tabs-mode:t; tab-width:8; coding:utf-8 -*-│
Initial import
2020-06-15 14:18:57 +00:00
│vi: set et ft=asm ts=8 sw=8 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney │
│ │
Change license
2020-12-28 01:18:44 +00:00
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
Initial import
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│ │
Change license
2020-12-28 01:18:44 +00:00
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
Initial import
2020-06-15 14:18:57 +00:00
╚─────────────────────────────────────────────────────────────────────────────*/
Introduce --strace flag for system call tracing This is similar to the --ftrace (c function call trace) flag, except it's less noisy since it only logs system calls to stderr. Having this flag is valuable because (1) system call tracing tells us a lot about the behavior of complex programs and (2) it's usually very hard to get system call tracing on various operating systems, e.g. strace, ktrace, dtruss, truss, nttrace, etc. Especially on Apple platforms where even with the special boot trick, debuggers still aren't guaranteed to work. make -j8 o//examples o//examples/hello.com --strace This is enabled by default in MODE=, MODE=opt, and MODE=dbg. In MODE=dbg extra information will be printed. make -j8 MODE=dbg o/dbg/examples o/dbg/examples/hello.com --strace |& less This change also changes: - Rename IsText() → _istext() - Rename IsUtf8() → _isutf8() - Fix madvise() on Windows NT - Fix empty string case of inet_ntop() - vfork() wrapper now saves and restores errno - Update xsigaction() to yoink syscall support
2022-03-19 01:07:28 +00:00
#include "libc/calls/strace.internal.h"
Initial import
2020-06-15 14:18:57 +00:00
#include "libc/dce.h"
Remove more nonstandard stuff from cosmopolitan.h Fixes #61
2021-03-01 07:42:35 +00:00
#include "libc/macros.internal.h"
Make numerous improvements - Python static hello world now 1.8mb - Python static fully loaded now 10mb - Python HTTPS client now uses MbedTLS - Python REPL now completes import stmts - Increase stack size for Python for now - Begin synthesizing posixpath and ntpath - Restore Python \N{UNICODE NAME} support - Restore Python NFKD symbol normalization - Add optimized code path for Intel SHA-NI - Get more Python unit tests passing faster - Get Python help() pagination working on NT - Python hashlib now supports MbedTLS PBKDF2 - Make memcpy/memmove/memcmp/bcmp/etc. faster - Add Mersenne Twister and Vigna to LIBC_RAND - Provide privileged __printf() for error code - Fix zipos opendir() so that it reports ENOTDIR - Add basic chmod() implementation for Windows NT - Add Cosmo's best functions to Python cosmo module - Pin function trace indent depth to that of caller - Show memory diagram on invalid access in MODE=dbg - Differentiate stack overflow on crash in MODE=dbg - Add stb_truetype and tools for analyzing font files - Upgrade to UNICODE 13 and reduce its binary footprint - COMPILE.COM now logs resource usage of build commands - Start implementing basic poll() support on bare metal - Set getauxval(AT_EXECFN) to GetModuleFileName() on NT - Add descriptions to strerror() in non-TINY build modes - Add COUNTBRANCH() macro to help with micro-optimizations - Make error / backtrace / asan / memory code more unbreakable - Add fast perfect C implementation of μ-Law and a-Law audio codecs - Make strtol() functions consistent with other libc implementations - Improve Linenoise implementation (see also github.com/jart/bestline) - COMPILE.COM now suppresses stdout/stderr of successful build commands
2021-09-28 05:58:51 +00:00
#include "libc/nexgen32e/macros.h"
Introduce --strace flag for system call tracing This is similar to the --ftrace (c function call trace) flag, except it's less noisy since it only logs system calls to stderr. Having this flag is valuable because (1) system call tracing tells us a lot about the behavior of complex programs and (2) it's usually very hard to get system call tracing on various operating systems, e.g. strace, ktrace, dtruss, truss, nttrace, etc. Especially on Apple platforms where even with the special boot trick, debuggers still aren't guaranteed to work. make -j8 o//examples o//examples/hello.com --strace This is enabled by default in MODE=, MODE=opt, and MODE=dbg. In MODE=dbg extra information will be printed. make -j8 MODE=dbg o/dbg/examples o/dbg/examples/hello.com --strace |& less This change also changes: - Rename IsText() → _istext() - Rename IsUtf8() → _isutf8() - Fix madvise() on Windows NT - Fix empty string case of inet_ntop() - vfork() wrapper now saves and restores errno - Update xsigaction() to yoink syscall support
2022-03-19 01:07:28 +00:00
#include "libc/sysv/consts/nr.h"
Initial import
2020-06-15 14:18:57 +00:00
/* ▄▄▄
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░▓█▓▓▒▒▒▒▒▒▒▒▒▒▒▒▒▒▓▓▓▓▓▓▒░░░▒ besiyata
▓▓█▓▓▒▓▓▓▒▒▒░░░░░░▒▓▓▓▓▒▒▒▒▒░ dishmaya
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█▓▓▒ ▄▄▄ ▀▓▒▓▒▒▒▓▓▓▓▓▓▒▒▒░░░░░░░░░▒▒░░░░░░░
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╔────────────────────────────────────────────────────────────────────────────│─╗
│ cosmopolitan § bell system five » system call support ─╬─│┼
╚────────────────────────────────────────────────────────────────────────────│*/
Improve documentation The Cosmo API documentation page is pretty good now https://justine.lol/cosmopolitan/documentation.html
2020-12-27 15:02:35 +00:00
.initbss 300,_init_systemfive
__hostos:
.quad 0
.endobj __hostos,globl,hidden
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
// Performs System Five System Call.
//
// Cosmopolitan is designed to delegate all function calls into the
// Linux, FreeBSD, OpenBSD, and XNU kernels via this function, with
// few exceptions. This function should generally only be called by
// generated thunks in the libc/sysv/syscalls/ directory.
//
// It's safe to call this function on Windows, where it will always
// return -1 with errno == ENOSYS. Further note that -1 is the only
// return value that means error, a common anti-pattern is to check
// for values less than 0 (which is more problematic on 32-bit).
//
// It is important to consider that system calls are one order of a
// magnitude more expensive than normal function calls. For example
// getpid() on Linux usually takes 500ns, and cached i/o calls will
// take 1µs or more. So we don't need to inline them like Chromium.
//
// Another thing to consider is that BSDs only loosely follow the
// System Five ABI for the SYSCALL instruction. For example Linux
// always follows the six argument limit but the FreeBSD sendfile
// system call accepts a seventh argument that is passed on stack
// and OpenBSD modifies functions like mmap so that the sixth arg
// is passed on the stack. There's also the carry flag convention
// that XNU, FreeBSD, and OpenBSD inherited from 386BSD aka Jolix
//
// @param %rax function ordinal supplied by jump slot
// @param %rdi,%rsi,%rdx,%rcx,%r8,%r9 and rest on stack
// @return %rax:%rdx is result, or -1 w/ errno on error
// @clob %rcx,%r10,%r11
// @see syscalls.sh
Get Cosmopolitan into releasable state A new rollup tool now exists for flattening out the headers in a way that works better for our purposes than cpp. A lot of the API clutter has been removed. APIs that aren't a sure thing in terms of general recommendation are now marked internal. There's now a smoke test for the amalgamation archive and gigantic header file. So we can now guarantee you can use this project on the easiest difficulty setting without the gigantic repository. A website is being created, which is currently a work in progress: https://justine.storage.googleapis.com/cosmopolitan/index.html
2020-11-25 16:19:00 +00:00
__systemfive:
.quad 0
.endobj __systemfive,globl,hidden
Make improvements - Fix build flakes - Polyfill SIGWINCH on Windows - Fix an execve issue on Windows - Make strerror show more information - Improve cmd.exe setup/teardown on Windows - Support bracketed paste mode in Blinkenlights - Show keyboard shortcuts in Blinkenlights status bar - Fixed copy_file_range() and copyfile() w/ zip filesystem - Size optimize GetDosArgv() to keep life.com 12kb in size - Improve Blinkenlights ability to load weird ELF executables - Fix program_executable_name and add GetInterpreterExecutableName - Make Python in tiny mode fail better if docstrings are requested - Update Python test exclusions in tiny* modes such as tinylinux - Add bulletproof unbreakable kprintf() troubleshooting function - Remove "oldskool" keyword from ape.S for virus scanners - Fix issue that caused backtraces to not print sometimes - Improve Blinkenlights serial uart character i/o - Make clock_gettime() not clobber errno on xnu - Improve sha256 cpuid check for old computers - Integrate some bestline linenoise fixes - Show runit process names better in htop - Remove SIGPIPE from ShowCrashReports() - Make realpath() not clobber errno - Avoid attaching GDB on non-Linux - Improve img.com example
2022-03-16 20:33:13 +00:00
__pid: .quad 0
.endobj __pid,globl,hidden
Initial import
2020-06-15 14:18:57 +00:00
.previous
Implement more security stuff - Support deterministic stacks on OpenBSD - Support OpenBSD system call origin verification - Fix overrun by one in chibicc string token allocator - Get all chibicc tests passing under Address Sanitizer
2021-02-03 04:21:06 +00:00
Elevate .text.syscall to .privileged It turns out adding OpenBSD msyscall() origin verification broke the --ftrace flag. The executable needs to issue raw syscalls while it's rewriting itself. So they need to be in the same section, and that's just plain simpler too.
2021-02-06 11:17:41 +00:00
.privileged
Initial import
2020-06-15 14:18:57 +00:00
.Lanchorpoint:
Support malloc() on bare metal Your Actually Portable Executables now contains a simple virtual memory that works similarly to the Linux Kernel in the sense that it maps your physical memory to negative addresses. This is needed to support mmap() and malloc(). This functionality has zero code size impact. For example the MODE=tiny LIFE.COM executable is still only 12KB in size. The APE bootloader code has also been simplified to improve readibility and further elevate the elegance by which we're able to support so many platforms thereby enhancing verifiability so that we may engender trust in this bootloading process.
2021-02-24 04:23:19 +00:00
#if SupportsLinux() || SupportsMetal()
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
systemfive_linux:
Add NetBSD support
2021-02-05 14:16:20 +00:00
and $0xfff,%eax
cmp $0xfff,%eax
Make redbean StoreAsset() work better - Better UBSAN error messages - POSIX Advisory Locks polyfills - Move redbean manual to /.help.txt - System call memory safety in ASAN mode - Character classification now does UNICODE
2021-05-14 12:36:58 +00:00
je systemfive_enosys # never taken branches cost nothing
Fix XNU / FreeBSD / OpenBSD / RHEL5 / NT bugs For the first time ever, all tests in this codebase now pass, when run automatically on macos, freebsd, openbsd, rhel5, rhel7, alpine and windows via the network using the runit and runitd build tools - Fix vfork exec path etc. - Add XNU opendir() support - Add OpenBSD opendir() support - Add Linux history to syscalls.sh - Use copy_file_range on FreeBSD 13+ - Fix system calls with 7+ arguments - Fix Windows with greater than 16 FDs - Fix RUNIT.COM and RUNITD.COM flakiness - Fix OpenBSD munmap() when files are mapped - Fix long double so it's actually long on Windows - Fix OpenBSD truncate() and ftruncate() thunk typo - Let Windows fcntl() be used on socket files descriptors - Fix Windows fstat() which had an accidental printf statement - Fix RHEL5 CLOCK_MONOTONIC by not aliasing to CLOCK_MONOTONIC_RAW This is wonderful. I never could have dreamed it would be possible to get it working so well on so many platforms with tiny binaries. Fixes #31 Fixes #25 Fixes #14
2021-01-25 21:08:05 +00:00
mov %rcx,%r10 # syscall instruction clobbers %rcx
push %rbp # linux never reads args from stack
mov %rsp,%rbp # having frame will help backtraces
syscall # this is known as a context switch
pop %rbp # next we check to see if it failed
Make redbean StoreAsset() work better - Better UBSAN error messages - POSIX Advisory Locks polyfills - Move redbean manual to /.help.txt - System call memory safety in ASAN mode - Character classification now does UNICODE
2021-05-14 12:36:58 +00:00
cmp $-4095,%rax # system five nexgen32e abi § a.2.1
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
jae systemfive_error # encodes errno as neg return value
Initial import
2020-06-15 14:18:57 +00:00
ret
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
.endfn systemfive_linux,globl,hidden
systemfive_error:
Initial import
2020-06-15 14:18:57 +00:00
neg %eax
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
// 𝑠𝑙𝑖𝑑𝑒
.endfn systemfive_error,globl,hidden
Improve dead code elimination
2021-02-08 12:04:42 +00:00
#endif
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
systemfive_errno:
Support thread local storage
2022-05-16 20:20:08 +00:00
xchg %eax,%ecx
.errno
mov %ecx,(%rax) # normalize to c library convention
Fix XNU / FreeBSD / OpenBSD / RHEL5 / NT bugs For the first time ever, all tests in this codebase now pass, when run automatically on macos, freebsd, openbsd, rhel5, rhel7, alpine and windows via the network using the runit and runitd build tools - Fix vfork exec path etc. - Add XNU opendir() support - Add OpenBSD opendir() support - Add Linux history to syscalls.sh - Use copy_file_range on FreeBSD 13+ - Fix system calls with 7+ arguments - Fix Windows with greater than 16 FDs - Fix RUNIT.COM and RUNITD.COM flakiness - Fix OpenBSD munmap() when files are mapped - Fix long double so it's actually long on Windows - Fix OpenBSD truncate() and ftruncate() thunk typo - Let Windows fcntl() be used on socket files descriptors - Fix Windows fstat() which had an accidental printf statement - Fix RHEL5 CLOCK_MONOTONIC by not aliasing to CLOCK_MONOTONIC_RAW This is wonderful. I never could have dreamed it would be possible to get it working so well on so many platforms with tiny binaries. Fixes #31 Fixes #25 Fixes #14
2021-01-25 21:08:05 +00:00
push $-1 # negative one is only error result
pop %rax # the push pop is to save code size
Initial import
2020-06-15 14:18:57 +00:00
ret
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
.endfn systemfive_errno,globl,hidden
systemfive_enosys:
Initial import
2020-06-15 14:18:57 +00:00
mov ENOSYS(%rip),%eax
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
jmp systemfive_errno
.endfn systemfive_enosys,globl,hidden
Improve dead code elimination
2021-02-08 12:04:42 +00:00
#if SupportsNetbsd()
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
systemfive_netbsd:
Add NetBSD support
2021-02-05 14:16:20 +00:00
shr $4*13,%rax
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
jmp systemfive_bsdscrub
Trim down executable sizes
2021-02-11 16:37:18 +00:00
.endfn systemfive_netbsd,globl,hidden
Improve dead code elimination
2021-02-08 12:04:42 +00:00
#endif
#if SupportsOpenbsd()
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
systemfive_openbsd:
Add NetBSD support
2021-02-05 14:16:20 +00:00
shr $4*10,%rax
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
jmp systemfive_bsdscrub
.endfn systemfive_openbsd,globl,hidden
Improve dead code elimination
2021-02-08 12:04:42 +00:00
#endif
#if SupportsFreebsd()
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
systemfive_freebsd:
Add NetBSD support
2021-02-05 14:16:20 +00:00
shr $4*7,%rax
Initial import
2020-06-15 14:18:57 +00:00
movzwl %ax,%eax
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
// 𝑠𝑙𝑖𝑑𝑒
.endfn systemfive_freebsd,globl,hidden
Improve dead code elimination
2021-02-08 12:04:42 +00:00
#endif
#if SupportsBsd()
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
systemfive_bsdscrub:
Add NetBSD support
2021-02-05 14:16:20 +00:00
and $0xfff,%eax
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
// 𝑠𝑙𝑖𝑑𝑒
.endfn systemfive_bsdscrub,globl,hidden
systemfive_bsd:
Initial import
2020-06-15 14:18:57 +00:00
cmp $0xfff,%ax
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
je systemfive_enosys
Show crash reports on SIGSYS This will help make it easier to troubleshoot ABI breakages with on operating systems that, unlike Linux don't have ironclad guarantees to not break userspace.
2022-06-23 20:01:01 +00:00
mov %rcx,%r10
push %rbx
push 32(%rsp)
push 24(%rsp)
push 16(%rsp)
mov %rax,%rbx # save ordinal for SIGSYS crash report
Fix XNU / FreeBSD / OpenBSD / RHEL5 / NT bugs For the first time ever, all tests in this codebase now pass, when run automatically on macos, freebsd, openbsd, rhel5, rhel7, alpine and windows via the network using the runit and runitd build tools - Fix vfork exec path etc. - Add XNU opendir() support - Add OpenBSD opendir() support - Add Linux history to syscalls.sh - Use copy_file_range on FreeBSD 13+ - Fix system calls with 7+ arguments - Fix Windows with greater than 16 FDs - Fix RUNIT.COM and RUNITD.COM flakiness - Fix OpenBSD munmap() when files are mapped - Fix long double so it's actually long on Windows - Fix OpenBSD truncate() and ftruncate() thunk typo - Let Windows fcntl() be used on socket files descriptors - Fix Windows fstat() which had an accidental printf statement - Fix RHEL5 CLOCK_MONOTONIC by not aliasing to CLOCK_MONOTONIC_RAW This is wonderful. I never could have dreamed it would be possible to get it working so well on so many platforms with tiny binaries. Fixes #31 Fixes #25 Fixes #14
2021-01-25 21:08:05 +00:00
syscall # bsd will need arg on stack sometimes
Show crash reports on SIGSYS This will help make it easier to troubleshoot ABI breakages with on operating systems that, unlike Linux don't have ironclad guarantees to not break userspace.
2022-06-23 20:01:01 +00:00
pop %rbx
pop %rbx
pop %rbx
pop %rbx
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
jc systemfive_errno # bsd sets carry flag if %rax is errno
Initial import
2020-06-15 14:18:57 +00:00
ret
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
.endfn systemfive_bsd
Improve dead code elimination
2021-02-08 12:04:42 +00:00
#endif
#if SupportsXnu()
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
systemfive_xnu:
// 0x?????????2153??? # how syscalls.sh encodes xnu ordinals
// │└┴┴┐
// │ ├┬┐
// 0x0000000002000153 # how xnu wants ordinals to be encoded
Initial import
2020-06-15 14:18:57 +00:00
mov %eax,%r11d
Add NetBSD support
2021-02-05 14:16:20 +00:00
and $0x0f000000,%r11d
shl $8,%eax
shr $20,%eax
Initial import
2020-06-15 14:18:57 +00:00
or %r11d,%eax
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
jmp systemfive_bsd
.endfn systemfive_xnu,globl,hidden
Improve dead code elimination
2021-02-08 12:04:42 +00:00
#endif
Initial import
2020-06-15 14:18:57 +00:00
.previous
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
// Initializes System Five system call support.
//
// (1) Extracts parameters passed by kernel
// (2) Detects OS without issuing system calls
// (3) Unpacks magnums from libc/sysv/consts.sh
// (4) Replaces stack with one we control
//
// @param %r15 is auxv
// @note OpenBSD devs: let us know if you start using auxv
Initial import
2020-06-15 14:18:57 +00:00
.init.start 300,_init_systemfive
push %rbx
push %rsi
Fix bugs with recent change This change makes further effort towards improving our poll() implementation on the New Technology. The stdin worker didn't work out so well for Python so it's not being used for now. System call tracing with the --strace flag should now be less noisy now on Windows unless you modify the strace.internal.h defines to turn on some optional ones that are most useful for debugging the system call wrappers.
2022-04-16 17:40:23 +00:00
// Detect the operating system.
mov (%rdi),%eax # __hostos
#if SupportsWindows() || SupportsXnu() || SupportsFreebsd()
// set by libc/ape.S for XNU
// set by libc/crt/crt.S for XNU/FreeBSD
// set by libc/nt/winmain.greg.c for New Technology
test %eax,%eax
jnz _init_systemfive_detected # os is already known
#endif
Improve dead code elimination
2021-02-08 12:04:42 +00:00
#if SupportsOpenbsd()
Use unsigned leb128 for magnums
2021-02-24 12:00:38 +00:00
cmpq $0,(%r15) # OpenBSD has no auxv
jnz 0f
mov $OPENBSD,%al
Fix bugs with recent change This change makes further effort towards improving our poll() implementation on the New Technology. The stdin worker didn't work out so well for Python so it's not being used for now. System call tracing with the --strace flag should now be less noisy now on Windows unless you modify the strace.internal.h defines to turn on some optional ones that are most useful for debugging the system call wrappers.
2022-04-16 17:40:23 +00:00
jmp _init_systemfive_detected
Use unsigned leb128 for magnums
2021-02-24 12:00:38 +00:00
0:
Improve dead code elimination
2021-02-08 12:04:42 +00:00
#endif
#if SupportsNetbsd()
Use unsigned leb128 for magnums
2021-02-24 12:00:38 +00:00
xor %ecx,%ecx
Fix bugs with recent change This change makes further effort towards improving our poll() implementation on the New Technology. The stdin worker didn't work out so well for Python so it's not being used for now. System call tracing with the --strace flag should now be less noisy now on Windows unless you modify the strace.internal.h defines to turn on some optional ones that are most useful for debugging the system call wrappers.
2022-04-16 17:40:23 +00:00
0: cmpq $2014,(%r15,%rcx,8) # NetBSD's AT_EXECFN
Use unsigned leb128 for magnums
2021-02-24 12:00:38 +00:00
jne 1f
mov $NETBSD,%al
Fix bugs with recent change This change makes further effort towards improving our poll() implementation on the New Technology. The stdin worker didn't work out so well for Python so it's not being used for now. System call tracing with the --strace flag should now be less noisy now on Windows unless you modify the strace.internal.h defines to turn on some optional ones that are most useful for debugging the system call wrappers.
2022-04-16 17:40:23 +00:00
jmp _init_systemfive_detected
Use unsigned leb128 for magnums
2021-02-24 12:00:38 +00:00
1: cmpq $0,(%r15,%rcx,8)
lea 2(%ecx),%ecx
Add NetBSD support
2021-02-05 14:16:20 +00:00
jnz 0b
Use unsigned leb128 for magnums
2021-02-24 12:00:38 +00:00
2:
Improve dead code elimination
2021-02-08 12:04:42 +00:00
#endif
Use unsigned leb128 for magnums
2021-02-24 12:00:38 +00:00
mov $LINUX,%al
Fix bugs with recent change This change makes further effort towards improving our poll() implementation on the New Technology. The stdin worker didn't work out so well for Python so it's not being used for now. System call tracing with the --strace flag should now be less noisy now on Windows unless you modify the strace.internal.h defines to turn on some optional ones that are most useful for debugging the system call wrappers.
2022-04-16 17:40:23 +00:00
_init_systemfive_detected:
stosq #→ __hostos
Use unsigned leb128 for magnums
2021-02-24 12:00:38 +00:00
bsr %eax,%eax
mov $_init_systemfive_jmptab,%ebx
movzbl (%rbx,%rax),%eax
lea (%rbx,%rax),%eax
jmp *%rax
_init_systemfive_jmptab:
.byte _init_systemfive_linux-_init_systemfive_jmptab
.byte _init_systemfive_metal-_init_systemfive_jmptab
.byte _init_systemfive_windows-_init_systemfive_jmptab
.byte _init_systemfive_xnu-_init_systemfive_jmptab
.byte _init_systemfive_openbsd-_init_systemfive_jmptab
.byte _init_systemfive_freebsd-_init_systemfive_jmptab
.byte _init_systemfive_netbsd-_init_systemfive_jmptab
.endobj _init_systemfive_jmptab
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
_init_systemfive_linux:
Use unsigned leb128 for magnums
2021-02-24 12:00:38 +00:00
#if SupportsLinux()
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
pushb systemfive_linux-.Lanchorpoint
Use unsigned leb128 for magnums
2021-02-24 12:00:38 +00:00
mov $syscon_linux,%esi
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
jmp _init_systemfive_os
Improve dead code elimination
2021-02-08 12:04:42 +00:00
#endif
Use unsigned leb128 for magnums
2021-02-24 12:00:38 +00:00
.endfn _init_systemfive_linux
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
_init_systemfive_metal:
Use unsigned leb128 for magnums
2021-02-24 12:00:38 +00:00
#if SupportsMetal()
Make numerous improvements - Python static hello world now 1.8mb - Python static fully loaded now 10mb - Python HTTPS client now uses MbedTLS - Python REPL now completes import stmts - Increase stack size for Python for now - Begin synthesizing posixpath and ntpath - Restore Python \N{UNICODE NAME} support - Restore Python NFKD symbol normalization - Add optimized code path for Intel SHA-NI - Get more Python unit tests passing faster - Get Python help() pagination working on NT - Python hashlib now supports MbedTLS PBKDF2 - Make memcpy/memmove/memcmp/bcmp/etc. faster - Add Mersenne Twister and Vigna to LIBC_RAND - Provide privileged __printf() for error code - Fix zipos opendir() so that it reports ENOTDIR - Add basic chmod() implementation for Windows NT - Add Cosmo's best functions to Python cosmo module - Pin function trace indent depth to that of caller - Show memory diagram on invalid access in MODE=dbg - Differentiate stack overflow on crash in MODE=dbg - Add stb_truetype and tools for analyzing font files - Upgrade to UNICODE 13 and reduce its binary footprint - COMPILE.COM now logs resource usage of build commands - Start implementing basic poll() support on bare metal - Set getauxval(AT_EXECFN) to GetModuleFileName() on NT - Add descriptions to strerror() in non-TINY build modes - Add COUNTBRANCH() macro to help with micro-optimizations - Make error / backtrace / asan / memory code more unbreakable - Add fast perfect C implementation of μ-Law and a-Law audio codecs - Make strtol() functions consistent with other libc implementations - Improve Linenoise implementation (see also github.com/jart/bestline) - COMPILE.COM now suppresses stdout/stderr of successful build commands
2021-09-28 05:58:51 +00:00
pushb systemfive_enosys-.Lanchorpoint
Use unsigned leb128 for magnums
2021-02-24 12:00:38 +00:00
mov $syscon_linux,%esi
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
jmp _init_systemfive_os
Improve dead code elimination
2021-02-08 12:04:42 +00:00
#endif
Use unsigned leb128 for magnums
2021-02-24 12:00:38 +00:00
.endfn _init_systemfive_metal
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
_init_systemfive_windows:
Use unsigned leb128 for magnums
2021-02-24 12:00:38 +00:00
#if SupportsWindows()
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
pushb systemfive_enosys-.Lanchorpoint
Use unsigned leb128 for magnums
2021-02-24 12:00:38 +00:00
mov $syscon_windows,%esi
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
jmp _init_systemfive_os
Improve dead code elimination
2021-02-08 12:04:42 +00:00
#endif
Use unsigned leb128 for magnums
2021-02-24 12:00:38 +00:00
.endfn _init_systemfive_windows
_init_systemfive_xnu:
#if SupportsXnu()
pushb systemfive_xnu-.Lanchorpoint
mov $syscon_xnu,%esi
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
jmp _init_systemfive_os
Improve dead code elimination
2021-02-08 12:04:42 +00:00
#endif
Use unsigned leb128 for magnums
2021-02-24 12:00:38 +00:00
.endfn _init_systemfive_xnu
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
_init_systemfive_openbsd:
Use unsigned leb128 for magnums
2021-02-24 12:00:38 +00:00
#if SupportsOpenbsd()
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
pushb systemfive_openbsd-.Lanchorpoint
Use unsigned leb128 for magnums
2021-02-24 12:00:38 +00:00
mov $syscon_openbsd,%esi
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
jmp _init_systemfive_os
Improve dead code elimination
2021-02-08 12:04:42 +00:00
#endif
Use unsigned leb128 for magnums
2021-02-24 12:00:38 +00:00
.endfn _init_systemfive_openbsd
_init_systemfive_freebsd:
#if SupportsFreebsd()
pushb systemfive_freebsd-.Lanchorpoint
mov $syscon_freebsd,%esi
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
jmp _init_systemfive_os
Improve dead code elimination
2021-02-08 12:04:42 +00:00
#endif
Use unsigned leb128 for magnums
2021-02-24 12:00:38 +00:00
.endfn _init_systemfive_freebsd
_init_systemfive_netbsd:
#if SupportsNetbsd()
pushb systemfive_netbsd-.Lanchorpoint
mov $syscon_netbsd,%esi
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
// 𝑠𝑙𝑖𝑑𝑒
Improve dead code elimination
2021-02-08 12:04:42 +00:00
#endif
Use unsigned leb128 for magnums
2021-02-24 12:00:38 +00:00
.endfn _init_systemfive_netbsd
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
_init_systemfive_os:
Initial import
2020-06-15 14:18:57 +00:00
pop %rax
Use unsigned leb128 for magnums
2021-02-24 12:00:38 +00:00
add $.Lanchorpoint,%eax
Get Cosmopolitan into releasable state A new rollup tool now exists for flattening out the headers in a way that works better for our purposes than cpp. A lot of the API clutter has been removed. APIs that aren't a sure thing in terms of general recommendation are now marked internal. There's now a smoke test for the amalgamation archive and gigantic header file. So we can now guarantee you can use this project on the easiest difficulty setting without the gigantic repository. A website is being created, which is currently a work in progress: https://justine.storage.googleapis.com/cosmopolitan/index.html
2020-11-25 16:19:00 +00:00
stosq #→ __systemfive
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
// 𝑠𝑙𝑖𝑑𝑒
Use unsigned leb128 for magnums
2021-02-24 12:00:38 +00:00
.endfn _init_systemfive_os
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
_init_systemfive_magnums:
Initial import
2020-06-15 14:18:57 +00:00
push %rdi
Use unsigned leb128 for magnums
2021-02-24 12:00:38 +00:00
mov $syscon_start,%edi
2: cmp $syscon_end,%edi
Initial import
2020-06-15 14:18:57 +00:00
jnb 5f
Use unsigned leb128 for magnums
2021-02-24 12:00:38 +00:00
xor %ebx,%ebx
Initial import
2020-06-15 14:18:57 +00:00
xor %ecx,%ecx
xor %edx,%edx
Use unsigned leb128 for magnums
2021-02-24 12:00:38 +00:00
3: lodsb # decodes uleb128
movzbl %al,%edx
and $127,%dl
shl %cl,%rdx
or %rdx,%rbx
add $7,%cl
test $128,%al
jnz 3b
xchg %rbx,%rax
Initial import
2020-06-15 14:18:57 +00:00
stosq
Introduce --strace flag for system call tracing This is similar to the --ftrace (c function call trace) flag, except it's less noisy since it only logs system calls to stderr. Having this flag is valuable because (1) system call tracing tells us a lot about the behavior of complex programs and (2) it's usually very hard to get system call tracing on various operating systems, e.g. strace, ktrace, dtruss, truss, nttrace, etc. Especially on Apple platforms where even with the special boot trick, debuggers still aren't guaranteed to work. make -j8 o//examples o//examples/hello.com --strace This is enabled by default in MODE=, MODE=opt, and MODE=dbg. In MODE=dbg extra information will be printed. make -j8 MODE=dbg o/dbg/examples o/dbg/examples/hello.com --strace |& less This change also changes: - Rename IsText() → _istext() - Rename IsUtf8() → _isutf8() - Fix madvise() on Windows NT - Fix empty string case of inet_ntop() - vfork() wrapper now saves and restores errno - Update xsigaction() to yoink syscall support
2022-03-19 01:07:28 +00:00
#ifdef SYSDEBUG
inc %r8d
#endif
Initial import
2020-06-15 14:18:57 +00:00
jmp 2b
Introduce --strace flag for system call tracing This is similar to the --ftrace (c function call trace) flag, except it's less noisy since it only logs system calls to stderr. Having this flag is valuable because (1) system call tracing tells us a lot about the behavior of complex programs and (2) it's usually very hard to get system call tracing on various operating systems, e.g. strace, ktrace, dtruss, truss, nttrace, etc. Especially on Apple platforms where even with the special boot trick, debuggers still aren't guaranteed to work. make -j8 o//examples o//examples/hello.com --strace This is enabled by default in MODE=, MODE=opt, and MODE=dbg. In MODE=dbg extra information will be printed. make -j8 MODE=dbg o/dbg/examples o/dbg/examples/hello.com --strace |& less This change also changes: - Rename IsText() → _istext() - Rename IsUtf8() → _isutf8() - Fix madvise() on Windows NT - Fix empty string case of inet_ntop() - vfork() wrapper now saves and restores errno - Update xsigaction() to yoink syscall support
2022-03-19 01:07:28 +00:00
5: nop
#ifdef SYSDEBUG
push %rdi
push %rsi
push %r8
call __describe_os
mov %rax,%rdx
pop %r8
.weak __stracef
ezlea __stracef,ax
test %rax,%rax
jz 5f
ezlea .Llog,di
mov %r8d,%esi
call *%rax
5: pop %rsi
pop %rdi
#endif /* DEBUGSYS */
pop %rdi
Make C memory safe like Rust This change enables Address Sanitizer systemically w/ `make MODE=dbg`. Our version of Rust's `unsafe` keyword is named `noasan` which is used for two functions that do aligned memory chunking, like `strcpy.c` and we need to fix the tiny DEFLATE code, but that's it everything else is fabulous you can have all the fischer price security blankets you need Best of all is we're now able to use the ASAN data in Blinkenlights to colorize the memory dumps. See the screenshot below of a test program: https://justine.lol/blinkenlights/asan.png Which is operating on float arrays stored on the stack, with red areas indicating poisoned memory, and the green areas indicate valid memory.
2021-02-01 11:33:13 +00:00
pop %rsi
pop %rbx
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
// 𝑠𝑙𝑖𝑑𝑒
Use unsigned leb128 for magnums
2021-02-24 12:00:38 +00:00
.endfn _init_systemfive_magnums
Make improvements - Fix build flakes - Polyfill SIGWINCH on Windows - Fix an execve issue on Windows - Make strerror show more information - Improve cmd.exe setup/teardown on Windows - Support bracketed paste mode in Blinkenlights - Show keyboard shortcuts in Blinkenlights status bar - Fixed copy_file_range() and copyfile() w/ zip filesystem - Size optimize GetDosArgv() to keep life.com 12kb in size - Improve Blinkenlights ability to load weird ELF executables - Fix program_executable_name and add GetInterpreterExecutableName - Make Python in tiny mode fail better if docstrings are requested - Update Python test exclusions in tiny* modes such as tinylinux - Add bulletproof unbreakable kprintf() troubleshooting function - Remove "oldskool" keyword from ape.S for virus scanners - Fix issue that caused backtraces to not print sometimes - Improve Blinkenlights serial uart character i/o - Make clock_gettime() not clobber errno on xnu - Improve sha256 cpuid check for old computers - Integrate some bestline linenoise fixes - Show runit process names better in htop - Remove SIGPIPE from ShowCrashReports() - Make realpath() not clobber errno - Avoid attaching GDB on non-Linux - Improve img.com example
2022-03-16 20:33:13 +00:00
#if SupportsSystemv()
_init_systemfive_pid:
ezlea __hostos,cx
mov (%rcx),%al
mov (%rdi),%eax
testb $WINDOWS|METAL,(%rcx)
jnz 1f
mov __NR_getpid,%eax
syscall
1: stosq
.endfn _init_systemfive_pid
#endif
Improve dead code elimination
2021-02-08 12:04:42 +00:00
#if SupportsSystemv() && !defined(TINY)
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
_init_systemfive_syscall:
Make redbean StoreAsset() work better - Better UBSAN error messages - POSIX Advisory Locks polyfills - Move redbean manual to /.help.txt - System call memory safety in ASAN mode - Character classification now does UNICODE
2021-05-14 12:36:58 +00:00
mov __NR_msyscall,%eax # syscall origin protect
Use unsigned leb128 for magnums
2021-02-24 12:00:38 +00:00
cmp $0xfff,%ax # openbsd is pretty cool
jae _init_systemfive_done
Implement more security stuff - Support deterministic stacks on OpenBSD - Support OpenBSD system call origin verification - Fix overrun by one in chibicc string token allocator - Get all chibicc tests passing under Address Sanitizer
2021-02-03 04:21:06 +00:00
push %rdi
push %rsi
Elevate .text.syscall to .privileged It turns out adding OpenBSD msyscall() origin verification broke the --ftrace flag. The executable needs to issue raw syscalls while it's rewriting itself. So they need to be in the same section, and that's just plain simpler too.
2021-02-06 11:17:41 +00:00
.weak __privileged_addr
.weak __privileged_size
mov $__privileged_addr,%edi
mov $__privileged_size,%esi
Implement more security stuff - Support deterministic stacks on OpenBSD - Support OpenBSD system call origin verification - Fix overrun by one in chibicc string token allocator - Get all chibicc tests passing under Address Sanitizer
2021-02-03 04:21:06 +00:00
syscall
pop %rsi
Make redbean StoreAsset() work better - Better UBSAN error messages - POSIX Advisory Locks polyfills - Move redbean manual to /.help.txt - System call memory safety in ASAN mode - Character classification now does UNICODE
2021-05-14 12:36:58 +00:00
pop %rdi
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
// 𝑠𝑙𝑖𝑑𝑒
Make C memory safe like Rust This change enables Address Sanitizer systemically w/ `make MODE=dbg`. Our version of Rust's `unsafe` keyword is named `noasan` which is used for two functions that do aligned memory chunking, like `strcpy.c` and we need to fix the tiny DEFLATE code, but that's it everything else is fabulous you can have all the fischer price security blankets you need Best of all is we're now able to use the ASAN data in Blinkenlights to colorize the memory dumps. See the screenshot below of a test program: https://justine.lol/blinkenlights/asan.png Which is operating on float arrays stored on the stack, with red areas indicating poisoned memory, and the green areas indicate valid memory.
2021-02-01 11:33:13 +00:00
#endif /* TINY */
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
_init_systemfive_done:
Make C memory safe like Rust This change enables Address Sanitizer systemically w/ `make MODE=dbg`. Our version of Rust's `unsafe` keyword is named `noasan` which is used for two functions that do aligned memory chunking, like `strcpy.c` and we need to fix the tiny DEFLATE code, but that's it everything else is fabulous you can have all the fischer price security blankets you need Best of all is we're now able to use the ASAN data in Blinkenlights to colorize the memory dumps. See the screenshot below of a test program: https://justine.lol/blinkenlights/asan.png Which is operating on float arrays stored on the stack, with red areas indicating poisoned memory, and the green areas indicate valid memory.
2021-02-01 11:33:13 +00:00
nop
.init.end 300,_init_systemfive,globl,hidden
Initial import
2020-06-15 14:18:57 +00:00
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
// Sections for varint encoded magic numbers.
//
// These sections are all ordered by (group_name, constant_name).
// They're populated by modules simply referencing the symbols.
//
// @see libc/sysv/consts.sh
// @see libc/sysv/consts/syscon_h
Initial import
2020-06-15 14:18:57 +00:00
.section .piro.bss.sort.syscon.1,"aw",@nobits
.align 8
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
syscon_start:/*
Initial import
2020-06-15 14:18:57 +00:00
...decentralized quadwords...
*/.previous
.section .piro.bss.sort.syscon.3,"aw",@nobits
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
syscon_end:
Initial import
2020-06-15 14:18:57 +00:00
.previous
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
.type syscon_start,@object
.type syscon_end,@object
.globl syscon_start
.globl syscon_end
Support malloc() on bare metal Your Actually Portable Executables now contains a simple virtual memory that works similarly to the Linux Kernel in the sense that it maps your physical memory to negative addresses. This is needed to support mmap() and malloc(). This functionality has zero code size impact. For example the MODE=tiny LIFE.COM executable is still only 12KB in size. The APE bootloader code has also been simplified to improve readibility and further elevate the elegance by which we're able to support so many platforms thereby enhancing verifiability so that we may engender trust in this bootloading process.
2021-02-24 04:23:19 +00:00
#if SupportsLinux() || SupportsMetal()
Initial import
2020-06-15 14:18:57 +00:00
.section .sort.rodata.syscon.linux.1,"a",@progbits
.align 1
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
syscon_linux:/*
Initial import
2020-06-15 14:18:57 +00:00
...decentralized leb128...
*/.previous
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
.type syscon_linux,@object
.globl syscon_linux
Improve dead code elimination
2021-02-08 12:04:42 +00:00
#endif
#if SupportsXnu()
Initial import
2020-06-15 14:18:57 +00:00
.section .sort.rodata.syscon.xnu.1,"a",@progbits
.align 1
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
syscon_xnu:/*
Initial import
2020-06-15 14:18:57 +00:00
...decentralized leb128...
*/.previous
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
.type syscon_xnu,@object
.globl syscon_xnu
Improve dead code elimination
2021-02-08 12:04:42 +00:00
#endif
#if SupportsFreebsd()
Initial import
2020-06-15 14:18:57 +00:00
.section .sort.rodata.syscon.freebsd.1,"a",@progbits
.align 1
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
syscon_freebsd:/*
Initial import
2020-06-15 14:18:57 +00:00
...decentralized leb128...
*/.previous
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
.type syscon_freebsd,@object
.globl syscon_freebsd
Improve dead code elimination
2021-02-08 12:04:42 +00:00
#endif
#if SupportsOpenbsd()
Initial import
2020-06-15 14:18:57 +00:00
.section .sort.rodata.syscon.openbsd.1,"a",@progbits
.align 1
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
syscon_openbsd:/*
Add NetBSD support
2021-02-05 14:16:20 +00:00
...decentralized leb128...
*/.previous
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
.type syscon_openbsd,@object
.globl syscon_openbsd
Improve dead code elimination
2021-02-08 12:04:42 +00:00
#endif
#if SupportsNetbsd()
Add NetBSD support
2021-02-05 14:16:20 +00:00
.section .sort.rodata.syscon.netbsd.1,"a",@progbits
.align 1
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
syscon_netbsd:/*
Initial import
2020-06-15 14:18:57 +00:00
...decentralized leb128...
*/.previous
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
.type syscon_netbsd,@object
.globl syscon_netbsd
Improve dead code elimination
2021-02-08 12:04:42 +00:00
#endif
#if SupportsWindows()
Initial import
2020-06-15 14:18:57 +00:00
.section .sort.rodata.syscon.windows.1,"a",@progbits
.align 1
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
syscon_windows:/*
Initial import
2020-06-15 14:18:57 +00:00
...decentralized leb128...
*/.previous
Get codebase completely working with LLVM You can now build Cosmopolitan with Clang: make -j8 MODE=llvm o/llvm/examples/hello.com The assembler and linker code is now friendly to LLVM too. So it's not needed to configure Clang to use binutils under the hood. If you love LLVM then you can now use pure LLVM.
2021-02-08 17:19:00 +00:00
.type syscon_windows,@object
.globl syscon_windows
Improve dead code elimination
2021-02-08 12:04:42 +00:00
#endif
Support malloc() on bare metal Your Actually Portable Executables now contains a simple virtual memory that works similarly to the Linux Kernel in the sense that it maps your physical memory to negative addresses. This is needed to support mmap() and malloc(). This functionality has zero code size impact. For example the MODE=tiny LIFE.COM executable is still only 12KB in size. The APE bootloader code has also been simplified to improve readibility and further elevate the elegance by which we're able to support so many platforms thereby enhancing verifiability so that we may engender trust in this bootloading process.
2021-02-24 04:23:19 +00:00
Introduce --strace flag for system call tracing This is similar to the --ftrace (c function call trace) flag, except it's less noisy since it only logs system calls to stderr. Having this flag is valuable because (1) system call tracing tells us a lot about the behavior of complex programs and (2) it's usually very hard to get system call tracing on various operating systems, e.g. strace, ktrace, dtruss, truss, nttrace, etc. Especially on Apple platforms where even with the special boot trick, debuggers still aren't guaranteed to work. make -j8 o//examples o//examples/hello.com --strace This is enabled by default in MODE=, MODE=opt, and MODE=dbg. In MODE=dbg extra information will be printed. make -j8 MODE=dbg o/dbg/examples o/dbg/examples/hello.com --strace |& less This change also changes: - Rename IsText() → _istext() - Rename IsUtf8() → _isutf8() - Fix madvise() on Windows NT - Fix empty string case of inet_ntop() - vfork() wrapper now saves and restores errno - Update xsigaction() to yoink syscall support
2022-03-19 01:07:28 +00:00
#ifdef SYSDEBUG
.rodata.str1.1
.Llog: .ascii STRACE_PROLOGUE
.ascii "bell system five system call support"
Make improvements - Expand redbean UNIX module - Expand redbean documentation - Ensure Lua copyright is embedded in binary - Increase the PATH_MAX limit especially on NT - Use column major sorting for linenoise completions - Fix some suboptimalities in redbean's new UNIX API - Figured out right flags for Multics newline in raw mode
2022-04-24 16:59:22 +00:00
.asciz " %'u magnums loaded on %s\n"
Introduce --strace flag for system call tracing This is similar to the --ftrace (c function call trace) flag, except it's less noisy since it only logs system calls to stderr. Having this flag is valuable because (1) system call tracing tells us a lot about the behavior of complex programs and (2) it's usually very hard to get system call tracing on various operating systems, e.g. strace, ktrace, dtruss, truss, nttrace, etc. Especially on Apple platforms where even with the special boot trick, debuggers still aren't guaranteed to work. make -j8 o//examples o//examples/hello.com --strace This is enabled by default in MODE=, MODE=opt, and MODE=dbg. In MODE=dbg extra information will be printed. make -j8 MODE=dbg o/dbg/examples o/dbg/examples/hello.com --strace |& less This change also changes: - Rename IsText() → _istext() - Rename IsUtf8() → _isutf8() - Fix madvise() on Windows NT - Fix empty string case of inet_ntop() - vfork() wrapper now saves and restores errno - Update xsigaction() to yoink syscall support
2022-03-19 01:07:28 +00:00
.previous
#endif /* DEBUGSYS */
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