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cosmopolitan/libc/calls/sigenter-xnu.c

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Initial import
2020-06-15 14:18:57 +00:00
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
flip et / noet in modelines `et` means `expandtab`. ```sh rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\) et\(.*\) :vi/vi: \1 xoet\2:vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)noet\(.*\):vi/vi: \1et\2 :vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)xoet\(.*\):vi/vi: \1noet\2:vi/' ```
2023-12-08 03:11:56 +00:00
│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
Initial import
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╞══════════════════════════════════════════════════════════════════════════════╡
│ 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
╚─────────────────────────────────────────────────────────────────────────────*/
Make some foss compatibility improvements
2022-10-14 16:52:35 +00:00
#include "ape/sections.internal.h"
Initial import
2020-06-15 14:18:57 +00:00
#include "libc/calls/calls.h"
#include "libc/calls/internal.h"
Reduce Makefile dependencies by 4%
2022-05-23 22:06:11 +00:00
#include "libc/calls/state.internal.h"
Improve memory safety This commit makes numerous refinements to cosmopolitan memory handling. The default stack size has been reduced from 2mb to 128kb. A new macro is now provided so you can easily reconfigure the stack size to be any value you want. Work around the breaking change by adding to your main: STATIC_STACK_SIZE(0x00200000); // 2mb stack If you're not sure how much stack you need, then you can use: STATIC_YOINK("stack_usage_logging"); After which you can `sort -nr o/$MODE/stack.log`. Based on the unit test suite, nothing in the Cosmopolitan repository (except for Python) needs a stack size greater than 30kb. There are also new macros for detecting the size and address of the stack at runtime, e.g. GetStackAddr(). We also now support sigaltstack() so if you want to see nice looking crash reports whenever a stack overflow happens, you can put this in main(): ShowCrashReports(); Under `make MODE=dbg` and `make MODE=asan` the unit testing framework will now automatically print backtraces of memory allocations when things like memory leaks happen. Bugs are now fixed in ASAN global variable overrun detection. The memtrack and asan runtimes also handle edge cases now. The new tools helped to identify a few memory leaks, which are fixed by this change. This change should fix an issue reported in #288 with ARG_MAX limits. Fixing this doubled the performance of MKDEPS.COM and AR.COM yet again.
2021-10-14 00:27:13 +00:00
#include "libc/calls/struct/metasigaltstack.h"
Reduce build graph by another eight percent
2022-08-13 20:11:56 +00:00
#include "libc/calls/struct/sigaction.h"
Introduce sigtimedwait() and sigwaitinfo() This change also invents sigcountset() and strsignal_r() and improves the quality of siginfo_t handling.
2022-10-10 14:36:07 +00:00
#include "libc/calls/struct/siginfo-meta.internal.h"
Improve signals and memory protection - Document sigaction() - Simplify New Technology fork() code - Testing and many bug fixes for mprotect() - Distribute Intel Xed ILD in the amalgamation - Turn Xed enums into defines to avoid DWARF bloat - Improve polyfilling of SA_SIGINFO on BSDs and fix bugs - setpgid(getpid(), getpid()) on Windows will ignore CTRL-C - Work around issues relating to NT mappings being executable - Permit automatic executable stack override via `ape_stack_pf`
2022-04-13 05:11:00 +00:00
#include "libc/calls/struct/siginfo-xnu.internal.h"
Initial import
2020-06-15 14:18:57 +00:00
#include "libc/calls/struct/siginfo.h"
#include "libc/calls/ucontext.h"
Make SSL handshakes much faster This change boosts SSL handshake performance from 2,627 to ~10,000 per second which is the same level of performance as NGINX at establishing secure connections. That's impressive if we consider that redbean is a forking frontend application server. This was accomplished by: 1. Enabling either SSL session caching or SSL tickets. We choose to use tickets since they reduce network round trips too and that's a more important metric than wrk'ing localhost. 2. Fixing mbedtls_mpi_sub_abs() which is the most frequently called function. It's called about 12,000 times during an SSL handshake since it's the basis of most arithmetic operations like addition and for some strange reason it was designed to make two needless copies in addition to calling malloc and free. That's now fixed. 3. Improving TLS output buffering during the SSL handshake only, so that only a single is write and read system call is needed until blocking on the ping pong. redbean will now do a better job wiping sensitive memory from a child process as soon as it's not needed. The nice thing about fork is it's much faster than reverse proxying so the goal is to use the different address spaces along with setuid() to minimize the risk that a server key will be compromised in the event that application code is hacked.
2021-07-12 06:17:47 +00:00
#include "libc/intrin/repstosb.h"
Support thread local storage
2022-05-16 20:20:08 +00:00
#include "libc/log/libfatal.internal.h"
Reduce build graph by another eight percent
2022-08-13 20:11:56 +00:00
#include "libc/runtime/runtime.h"
Make improvements - Every unit test now passes on Apple Silicon. The final piece of this puzzle was porting our POSIX threads cancelation support, since that works differently on ARM64 XNU vs. AMD64. Our semaphore support on Apple Silicon is also superior now compared to AMD64, thanks to the grand central dispatch library which lets *NSYNC locks go faster. - The Cosmopolitan runtime is now more stable, particularly on Windows. To do this, thread local storage is mandatory at all runtime levels, and the innermost packages of the C library is no longer being built using ASAN. TLS is being bootstrapped with a 128-byte TIB during the process startup phase, and then later on the runtime re-allocates it either statically or dynamically to support code using _Thread_local. fork() and execve() now do a better job cooperating with threads. We can now check how much stack memory is left in the process or thread when functions like kprintf() / execve() etc. call alloca(), so that ENOMEM can be raised, reduce a buffer size, or just print a warning. - POSIX signal emulation is now implemented the same way kernels do it with pthread_kill() and raise(). Any thread can interrupt any other thread, regardless of what it's doing. If it's blocked on read/write then the killer thread will cancel its i/o operation so that EINTR can be returned in the mark thread immediately. If it's doing a tight CPU bound operation, then that's also interrupted by the signal delivery. Signal delivery works now by suspending a thread and pushing context data structures onto its stack, and redirecting its execution to a trampoline function, which calls SetThreadContext(GetCurrentThread()) when it's done. - We're now doing a better job managing locks and handles. On NetBSD we now close semaphore file descriptors in forked children. Semaphores on Windows can now be canceled immediately, which means mutexes/condition variables will now go faster. Apple Silicon semaphores can be canceled too. We're now using Apple's pthread_yield() funciton. Apple _nocancel syscalls are now used on XNU when appropriate to ensure pthread_cancel requests aren't lost. The MbedTLS library has been updated to support POSIX thread cancelations. See tool/build/runitd.c for an example of how it can be used for production multi-threaded tls servers. Handles on Windows now leak less often across processes. All i/o operations on Windows are now overlapped, which means file pointers can no longer be inherited across dup() and fork() for the time being. - We now spawn a thread on Windows to deliver SIGCHLD and wakeup wait4() which means, for example, that posix_spawn() now goes 3x faster. POSIX spawn is also now more correct. Like Musl, it's now able to report the failure code of execve() via a pipe although our approach favors using shared memory to do that on systems that have a true vfork() function. - We now spawn a thread to deliver SIGALRM to threads when setitimer() is used. This enables the most precise wakeups the OS makes possible. - The Cosmopolitan runtime now uses less memory. On NetBSD for example, it turned out the kernel would actually commit the PT_GNU_STACK size which caused RSS to be 6mb for every process. Now it's down to ~4kb. On Apple Silicon, we reduce the mandatory upstream thread size to the smallest possible size to reduce the memory overhead of Cosmo threads. The examples directory has a program called greenbean which can spawn a web server on Linux with 10,000 worker threads and have the memory usage of the process be ~77mb. The 1024 byte overhead of POSIX-style thread-local storage is now optional; it won't be allocated until the pthread_setspecific/getspecific functions are called. On Windows, the threads that get spawned which are internal to the libc implementation use reserve rather than commit memory, which shaves a few hundred kb. - sigaltstack() is now supported on Windows, however it's currently not able to be used to handle stack overflows, since crash signals are still generated by WIN32. However the crash handler will still switch to the alt stack, which is helpful in environments with tiny threads. - Test binaries are now smaller. Many of the mandatory dependencies of the test runner have been removed. This ensures many programs can do a better job only linking the the thing they're testing. This caused the test binaries for LIBC_FMT for example, to decrease from 200kb to 50kb - long double is no longer used in the implementation details of libc, except in the APIs that define it. The old code that used long double for time (instead of struct timespec) has now been thoroughly removed. - ShowCrashReports() is now much tinier in MODE=tiny. Instead of doing backtraces itself, it'll just print a command you can run on the shell using our new `cosmoaddr2line` program to view the backtrace. - Crash report signal handling now works in a much better way. Instead of terminating the process, it now relies on SA_RESETHAND so that the default SIG_IGN behavior can terminate the process if necessary. - Our pledge() functionality has now been fully ported to AARCH64 Linux.
2023-09-19 03:44:45 +00:00
#include "libc/runtime/stack.h"
Initial import
2020-06-15 14:18:57 +00:00
#include "libc/str/str.h"
Improve memory safety This commit makes numerous refinements to cosmopolitan memory handling. The default stack size has been reduced from 2mb to 128kb. A new macro is now provided so you can easily reconfigure the stack size to be any value you want. Work around the breaking change by adding to your main: STATIC_STACK_SIZE(0x00200000); // 2mb stack If you're not sure how much stack you need, then you can use: STATIC_YOINK("stack_usage_logging"); After which you can `sort -nr o/$MODE/stack.log`. Based on the unit test suite, nothing in the Cosmopolitan repository (except for Python) needs a stack size greater than 30kb. There are also new macros for detecting the size and address of the stack at runtime, e.g. GetStackAddr(). We also now support sigaltstack() so if you want to see nice looking crash reports whenever a stack overflow happens, you can put this in main(): ShowCrashReports(); Under `make MODE=dbg` and `make MODE=asan` the unit testing framework will now automatically print backtraces of memory allocations when things like memory leaks happen. Bugs are now fixed in ASAN global variable overrun detection. The memtrack and asan runtimes also handle edge cases now. The new tools helped to identify a few memory leaks, which are fixed by this change. This change should fix an issue reported in #288 with ARG_MAX limits. Fixing this doubled the performance of MKDEPS.COM and AR.COM yet again.
2021-10-14 00:27:13 +00:00
#include "libc/sysv/consts/sa.h"
Initial import
2020-06-15 14:18:57 +00:00
/**
* @fileoverview XNU kernel callback normalization.
*/
struct __darwin_mmst_reg {
char __mmst_reg[10];
char __mmst_rsrv[6];
};
struct __darwin_xmm_reg {
char __xmm_reg[16];
};
struct __darwin_ymm_reg {
char __ymm_reg[32];
};
struct __darwin_zmm_reg {
char __zmm_reg[64];
};
struct __darwin_opmask_reg {
char __opmask_reg[8];
};
struct __darwin_x86_thread_state64 {
uint64_t __rax;
uint64_t __rbx;
uint64_t __rcx;
uint64_t __rdx;
uint64_t __rdi;
uint64_t __rsi;
uint64_t __rbp;
uint64_t __rsp;
uint64_t __r8;
uint64_t __r9;
uint64_t __r10;
uint64_t __r11;
uint64_t __r12;
uint64_t __r13;
uint64_t __r14;
uint64_t __r15;
uint64_t __rip;
uint64_t __rflags;
uint64_t __cs;
uint64_t __fs;
uint64_t __gs;
};
struct __darwin_x86_thread_full_state64 {
struct __darwin_x86_thread_state64 ss64;
uint64_t __ds;
uint64_t __es;
uint64_t __ss;
uint64_t __gsbase;
};
struct __darwin_x86_float_state64 {
int32_t __fpu_reserved[2];
Improve signal handling and math - Polyfill ucontext_t on FreeBSD/OpenBSD/NetBSD - Add tests confirming signals can edit CPU state - Work towards supporting ZIP filesystem on bare metal - Add more tinymath unit tests for POSIX conformance - Add X87 and SSE status flags to crash report - Fix some bugs in blinkenlights - Fix llvm build breakage
2021-02-26 02:30:17 +00:00
uint16_t __fpu_fcw;
uint16_t __fpu_fsw;
Initial import
2020-06-15 14:18:57 +00:00
uint8_t __fpu_ftw;
uint8_t __fpu_rsrv1;
uint16_t __fpu_fop;
uint32_t __fpu_ip;
uint16_t __fpu_cs;
uint16_t __fpu_rsrv2;
uint32_t __fpu_dp;
uint16_t __fpu_ds;
uint16_t __fpu_rsrv3;
uint32_t __fpu_mxcsr;
uint32_t __fpu_mxcsrmask;
struct __darwin_mmst_reg __fpu_stmm0;
struct __darwin_mmst_reg __fpu_stmm1;
struct __darwin_mmst_reg __fpu_stmm2;
struct __darwin_mmst_reg __fpu_stmm3;
struct __darwin_mmst_reg __fpu_stmm4;
struct __darwin_mmst_reg __fpu_stmm5;
struct __darwin_mmst_reg __fpu_stmm6;
struct __darwin_mmst_reg __fpu_stmm7;
struct __darwin_xmm_reg __fpu_xmm0;
struct __darwin_xmm_reg __fpu_xmm1;
struct __darwin_xmm_reg __fpu_xmm2;
struct __darwin_xmm_reg __fpu_xmm3;
struct __darwin_xmm_reg __fpu_xmm4;
struct __darwin_xmm_reg __fpu_xmm5;
struct __darwin_xmm_reg __fpu_xmm6;
struct __darwin_xmm_reg __fpu_xmm7;
struct __darwin_xmm_reg __fpu_xmm8;
struct __darwin_xmm_reg __fpu_xmm9;
struct __darwin_xmm_reg __fpu_xmm10;
struct __darwin_xmm_reg __fpu_xmm11;
struct __darwin_xmm_reg __fpu_xmm12;
struct __darwin_xmm_reg __fpu_xmm13;
struct __darwin_xmm_reg __fpu_xmm14;
struct __darwin_xmm_reg __fpu_xmm15;
Improve signal handling and math - Polyfill ucontext_t on FreeBSD/OpenBSD/NetBSD - Add tests confirming signals can edit CPU state - Work towards supporting ZIP filesystem on bare metal - Add more tinymath unit tests for POSIX conformance - Add X87 and SSE status flags to crash report - Fix some bugs in blinkenlights - Fix llvm build breakage
2021-02-26 02:30:17 +00:00
char __fpu_rsrv4[96];
Initial import
2020-06-15 14:18:57 +00:00
int32_t __fpu_reserved1;
};
struct __darwin_x86_avx_state64 {
int32_t __fpu_reserved[2];
Improve signal handling and math - Polyfill ucontext_t on FreeBSD/OpenBSD/NetBSD - Add tests confirming signals can edit CPU state - Work towards supporting ZIP filesystem on bare metal - Add more tinymath unit tests for POSIX conformance - Add X87 and SSE status flags to crash report - Fix some bugs in blinkenlights - Fix llvm build breakage
2021-02-26 02:30:17 +00:00
uint16_t __fpu_fcw;
uint16_t __fpu_fsw;
Initial import
2020-06-15 14:18:57 +00:00
uint8_t __fpu_ftw;
uint8_t __fpu_rsrv1;
uint16_t __fpu_fop;
uint32_t __fpu_ip;
uint16_t __fpu_cs;
uint16_t __fpu_rsrv2;
uint32_t __fpu_dp;
uint16_t __fpu_ds;
uint16_t __fpu_rsrv3;
uint32_t __fpu_mxcsr;
uint32_t __fpu_mxcsrmask;
struct __darwin_mmst_reg __fpu_stmm0;
struct __darwin_mmst_reg __fpu_stmm1;
struct __darwin_mmst_reg __fpu_stmm2;
struct __darwin_mmst_reg __fpu_stmm3;
struct __darwin_mmst_reg __fpu_stmm4;
struct __darwin_mmst_reg __fpu_stmm5;
struct __darwin_mmst_reg __fpu_stmm6;
struct __darwin_mmst_reg __fpu_stmm7;
struct __darwin_xmm_reg __fpu_xmm0;
struct __darwin_xmm_reg __fpu_xmm1;
struct __darwin_xmm_reg __fpu_xmm2;
struct __darwin_xmm_reg __fpu_xmm3;
struct __darwin_xmm_reg __fpu_xmm4;
struct __darwin_xmm_reg __fpu_xmm5;
struct __darwin_xmm_reg __fpu_xmm6;
struct __darwin_xmm_reg __fpu_xmm7;
struct __darwin_xmm_reg __fpu_xmm8;
struct __darwin_xmm_reg __fpu_xmm9;
struct __darwin_xmm_reg __fpu_xmm10;
struct __darwin_xmm_reg __fpu_xmm11;
struct __darwin_xmm_reg __fpu_xmm12;
struct __darwin_xmm_reg __fpu_xmm13;
struct __darwin_xmm_reg __fpu_xmm14;
struct __darwin_xmm_reg __fpu_xmm15;
char __fpu_rsrv4[6 * 16];
int32_t __fpu_reserved1;
char __avx_reserved1[64];
struct __darwin_xmm_reg __fpu_ymmh0;
struct __darwin_xmm_reg __fpu_ymmh1;
struct __darwin_xmm_reg __fpu_ymmh2;
struct __darwin_xmm_reg __fpu_ymmh3;
struct __darwin_xmm_reg __fpu_ymmh4;
struct __darwin_xmm_reg __fpu_ymmh5;
struct __darwin_xmm_reg __fpu_ymmh6;
struct __darwin_xmm_reg __fpu_ymmh7;
struct __darwin_xmm_reg __fpu_ymmh8;
struct __darwin_xmm_reg __fpu_ymmh9;
struct __darwin_xmm_reg __fpu_ymmh10;
struct __darwin_xmm_reg __fpu_ymmh11;
struct __darwin_xmm_reg __fpu_ymmh12;
struct __darwin_xmm_reg __fpu_ymmh13;
struct __darwin_xmm_reg __fpu_ymmh14;
struct __darwin_xmm_reg __fpu_ymmh15;
};
struct __darwin_x86_avx512_state64 {
int32_t __fpu_reserved[2];
Improve signal handling and math - Polyfill ucontext_t on FreeBSD/OpenBSD/NetBSD - Add tests confirming signals can edit CPU state - Work towards supporting ZIP filesystem on bare metal - Add more tinymath unit tests for POSIX conformance - Add X87 and SSE status flags to crash report - Fix some bugs in blinkenlights - Fix llvm build breakage
2021-02-26 02:30:17 +00:00
uint16_t __fpu_fcw;
uint16_t __fpu_fsw;
Initial import
2020-06-15 14:18:57 +00:00
uint8_t __fpu_ftw;
uint8_t __fpu_rsrv1;
uint16_t __fpu_fop;
uint32_t __fpu_ip;
uint16_t __fpu_cs;
uint16_t __fpu_rsrv2;
uint32_t __fpu_dp;
uint16_t __fpu_ds;
uint16_t __fpu_rsrv3;
uint32_t __fpu_mxcsr;
uint32_t __fpu_mxcsrmask;
struct __darwin_mmst_reg __fpu_stmm0;
struct __darwin_mmst_reg __fpu_stmm1;
struct __darwin_mmst_reg __fpu_stmm2;
struct __darwin_mmst_reg __fpu_stmm3;
struct __darwin_mmst_reg __fpu_stmm4;
struct __darwin_mmst_reg __fpu_stmm5;
struct __darwin_mmst_reg __fpu_stmm6;
struct __darwin_mmst_reg __fpu_stmm7;
struct __darwin_xmm_reg __fpu_xmm0;
struct __darwin_xmm_reg __fpu_xmm1;
struct __darwin_xmm_reg __fpu_xmm2;
struct __darwin_xmm_reg __fpu_xmm3;
struct __darwin_xmm_reg __fpu_xmm4;
struct __darwin_xmm_reg __fpu_xmm5;
struct __darwin_xmm_reg __fpu_xmm6;
struct __darwin_xmm_reg __fpu_xmm7;
struct __darwin_xmm_reg __fpu_xmm8;
struct __darwin_xmm_reg __fpu_xmm9;
struct __darwin_xmm_reg __fpu_xmm10;
struct __darwin_xmm_reg __fpu_xmm11;
struct __darwin_xmm_reg __fpu_xmm12;
struct __darwin_xmm_reg __fpu_xmm13;
struct __darwin_xmm_reg __fpu_xmm14;
struct __darwin_xmm_reg __fpu_xmm15;
char __fpu_rsrv4[6 * 16];
int32_t __fpu_reserved1;
char __avx_reserved1[64];
struct __darwin_xmm_reg __fpu_ymmh0;
struct __darwin_xmm_reg __fpu_ymmh1;
struct __darwin_xmm_reg __fpu_ymmh2;
struct __darwin_xmm_reg __fpu_ymmh3;
struct __darwin_xmm_reg __fpu_ymmh4;
struct __darwin_xmm_reg __fpu_ymmh5;
struct __darwin_xmm_reg __fpu_ymmh6;
struct __darwin_xmm_reg __fpu_ymmh7;
struct __darwin_xmm_reg __fpu_ymmh8;
struct __darwin_xmm_reg __fpu_ymmh9;
struct __darwin_xmm_reg __fpu_ymmh10;
struct __darwin_xmm_reg __fpu_ymmh11;
struct __darwin_xmm_reg __fpu_ymmh12;
struct __darwin_xmm_reg __fpu_ymmh13;
struct __darwin_xmm_reg __fpu_ymmh14;
struct __darwin_xmm_reg __fpu_ymmh15;
struct __darwin_opmask_reg __fpu_k0;
struct __darwin_opmask_reg __fpu_k1;
struct __darwin_opmask_reg __fpu_k2;
struct __darwin_opmask_reg __fpu_k3;
struct __darwin_opmask_reg __fpu_k4;
struct __darwin_opmask_reg __fpu_k5;
struct __darwin_opmask_reg __fpu_k6;
struct __darwin_opmask_reg __fpu_k7;
struct __darwin_ymm_reg __fpu_zmmh0;
struct __darwin_ymm_reg __fpu_zmmh1;
struct __darwin_ymm_reg __fpu_zmmh2;
struct __darwin_ymm_reg __fpu_zmmh3;
struct __darwin_ymm_reg __fpu_zmmh4;
struct __darwin_ymm_reg __fpu_zmmh5;
struct __darwin_ymm_reg __fpu_zmmh6;
struct __darwin_ymm_reg __fpu_zmmh7;
struct __darwin_ymm_reg __fpu_zmmh8;
struct __darwin_ymm_reg __fpu_zmmh9;
struct __darwin_ymm_reg __fpu_zmmh10;
struct __darwin_ymm_reg __fpu_zmmh11;
struct __darwin_ymm_reg __fpu_zmmh12;
struct __darwin_ymm_reg __fpu_zmmh13;
struct __darwin_ymm_reg __fpu_zmmh14;
struct __darwin_ymm_reg __fpu_zmmh15;
struct __darwin_zmm_reg __fpu_zmm16;
struct __darwin_zmm_reg __fpu_zmm17;
struct __darwin_zmm_reg __fpu_zmm18;
struct __darwin_zmm_reg __fpu_zmm19;
struct __darwin_zmm_reg __fpu_zmm20;
struct __darwin_zmm_reg __fpu_zmm21;
struct __darwin_zmm_reg __fpu_zmm22;
struct __darwin_zmm_reg __fpu_zmm23;
struct __darwin_zmm_reg __fpu_zmm24;
struct __darwin_zmm_reg __fpu_zmm25;
struct __darwin_zmm_reg __fpu_zmm26;
struct __darwin_zmm_reg __fpu_zmm27;
struct __darwin_zmm_reg __fpu_zmm28;
struct __darwin_zmm_reg __fpu_zmm29;
struct __darwin_zmm_reg __fpu_zmm30;
struct __darwin_zmm_reg __fpu_zmm31;
};
struct __darwin_x86_exception_state64 {
uint16_t __trapno;
uint16_t __cpu;
uint32_t __err;
uint64_t __faultvaddr;
};
struct __darwin_x86_debug_state64 {
uint64_t __dr0;
uint64_t __dr1;
uint64_t __dr2;
uint64_t __dr3;
uint64_t __dr4;
uint64_t __dr5;
uint64_t __dr6;
uint64_t __dr7;
};
struct __darwin_x86_cpmu_state64 {
uint64_t __ctrs[16];
};
struct __darwin_mcontext64_full {
struct __darwin_x86_exception_state64 __es;
struct __darwin_x86_thread_full_state64 __ss;
struct __darwin_x86_float_state64 __fs;
};
struct __darwin_mcontext_avx64 {
struct __darwin_x86_exception_state64 __es;
struct __darwin_x86_thread_state64 __ss;
struct __darwin_x86_avx_state64 __fs;
};
struct __darwin_mcontext_avx64_full {
struct __darwin_x86_exception_state64 __es;
struct __darwin_x86_thread_full_state64 __ss;
struct __darwin_x86_avx_state64 __fs;
};
struct __darwin_mcontext_avx512_64 {
struct __darwin_x86_exception_state64 __es;
struct __darwin_x86_thread_state64 __ss;
struct __darwin_x86_avx512_state64 __fs;
};
struct __darwin_mcontext_avx512_64_full {
struct __darwin_x86_exception_state64 __es;
struct __darwin_x86_thread_full_state64 __ss;
struct __darwin_x86_avx512_state64 __fs;
};
Introduce native support for MacOS ARM64 There's a new program named ape/ape-m1.c which will be used to build an embeddable binary that can load ape and elf executables. The support is mostly working so far, but still chasing down ABI issues.
2023-05-19 02:05:08 +00:00
struct __darwin_arm_exception_state64 {
uint64_t far;
uint32_t esr;
uint32_t exception;
};
struct __darwin_arm_thread_state64 {
uint64_t __x[29];
uint64_t __fp;
uint64_t __lr;
uint64_t __sp;
uint64_t __pc;
uint32_t __cpsr;
uint32_t __pad;
};
struct __darwin_arm_vfp_state {
uint32_t __r[64];
uint32_t __fpscr;
};
Initial import
2020-06-15 14:18:57 +00:00
struct __darwin_mcontext64 {
Introduce native support for MacOS ARM64 There's a new program named ape/ape-m1.c which will be used to build an embeddable binary that can load ape and elf executables. The support is mostly working so far, but still chasing down ABI issues.
2023-05-19 02:05:08 +00:00
#ifdef __x86_64__
Initial import
2020-06-15 14:18:57 +00:00
struct __darwin_x86_exception_state64 __es;
struct __darwin_x86_thread_state64 __ss;
struct __darwin_x86_float_state64 __fs;
Introduce native support for MacOS ARM64 There's a new program named ape/ape-m1.c which will be used to build an embeddable binary that can load ape and elf executables. The support is mostly working so far, but still chasing down ABI issues.
2023-05-19 02:05:08 +00:00
#elif defined(__aarch64__)
struct __darwin_arm_exception_state64 __es;
struct __darwin_arm_thread_state64 __ss;
struct __darwin_arm_vfp_state __fs;
#endif
Initial import
2020-06-15 14:18:57 +00:00
};
struct __darwin_ucontext {
int32_t uc_onstack;
uint32_t uc_sigmask;
Improve memory safety This commit makes numerous refinements to cosmopolitan memory handling. The default stack size has been reduced from 2mb to 128kb. A new macro is now provided so you can easily reconfigure the stack size to be any value you want. Work around the breaking change by adding to your main: STATIC_STACK_SIZE(0x00200000); // 2mb stack If you're not sure how much stack you need, then you can use: STATIC_YOINK("stack_usage_logging"); After which you can `sort -nr o/$MODE/stack.log`. Based on the unit test suite, nothing in the Cosmopolitan repository (except for Python) needs a stack size greater than 30kb. There are also new macros for detecting the size and address of the stack at runtime, e.g. GetStackAddr(). We also now support sigaltstack() so if you want to see nice looking crash reports whenever a stack overflow happens, you can put this in main(): ShowCrashReports(); Under `make MODE=dbg` and `make MODE=asan` the unit testing framework will now automatically print backtraces of memory allocations when things like memory leaks happen. Bugs are now fixed in ASAN global variable overrun detection. The memtrack and asan runtimes also handle edge cases now. The new tools helped to identify a few memory leaks, which are fixed by this change. This change should fix an issue reported in #288 with ARG_MAX limits. Fixing this doubled the performance of MKDEPS.COM and AR.COM yet again.
2021-10-14 00:27:13 +00:00
struct sigaltstack_bsd uc_stack;
Initial import
2020-06-15 14:18:57 +00:00
struct __darwin_ucontext *uc_link;
uint64_t uc_mcsize;
struct __darwin_mcontext64 *uc_mcontext;
};
Introduce native support for MacOS ARM64 There's a new program named ape/ape-m1.c which will be used to build an embeddable binary that can load ape and elf executables. The support is mostly working so far, but still chasing down ABI issues.
2023-05-19 02:05:08 +00:00
#ifdef __x86_64__
Support thread local storage
2022-05-16 20:20:08 +00:00
static privileged void xnuexceptionstate2linux(
Initial import
2020-06-15 14:18:57 +00:00
mcontext_t *mc, struct __darwin_x86_exception_state64 *xnues) {
mc->trapno = xnues->__trapno;
mc->err = xnues->__err;
}
Support thread local storage
2022-05-16 20:20:08 +00:00
static privileged void linuxexceptionstate2xnu(
Improve signal handling and math - Polyfill ucontext_t on FreeBSD/OpenBSD/NetBSD - Add tests confirming signals can edit CPU state - Work towards supporting ZIP filesystem on bare metal - Add more tinymath unit tests for POSIX conformance - Add X87 and SSE status flags to crash report - Fix some bugs in blinkenlights - Fix llvm build breakage
2021-02-26 02:30:17 +00:00
struct __darwin_x86_exception_state64 *xnues, mcontext_t *mc) {
xnues->__trapno = mc->trapno;
xnues->__err = mc->err;
}
Support thread local storage
2022-05-16 20:20:08 +00:00
static privileged void xnuthreadstate2linux(
Improve memory safety This commit makes numerous refinements to cosmopolitan memory handling. The default stack size has been reduced from 2mb to 128kb. A new macro is now provided so you can easily reconfigure the stack size to be any value you want. Work around the breaking change by adding to your main: STATIC_STACK_SIZE(0x00200000); // 2mb stack If you're not sure how much stack you need, then you can use: STATIC_YOINK("stack_usage_logging"); After which you can `sort -nr o/$MODE/stack.log`. Based on the unit test suite, nothing in the Cosmopolitan repository (except for Python) needs a stack size greater than 30kb. There are also new macros for detecting the size and address of the stack at runtime, e.g. GetStackAddr(). We also now support sigaltstack() so if you want to see nice looking crash reports whenever a stack overflow happens, you can put this in main(): ShowCrashReports(); Under `make MODE=dbg` and `make MODE=asan` the unit testing framework will now automatically print backtraces of memory allocations when things like memory leaks happen. Bugs are now fixed in ASAN global variable overrun detection. The memtrack and asan runtimes also handle edge cases now. The new tools helped to identify a few memory leaks, which are fixed by this change. This change should fix an issue reported in #288 with ARG_MAX limits. Fixing this doubled the performance of MKDEPS.COM and AR.COM yet again.
2021-10-14 00:27:13 +00:00
mcontext_t *mc, struct __darwin_x86_thread_state64 *xnuss) {
Initial import
2020-06-15 14:18:57 +00:00
mc->rdi = xnuss->__rdi;
mc->rsi = xnuss->__rsi;
mc->rbp = xnuss->__rbp;
mc->rbx = xnuss->__rbx;
mc->rdx = xnuss->__rdx;
mc->rax = xnuss->__rax;
mc->rcx = xnuss->__rcx;
mc->rsp = xnuss->__rsp;
mc->rip = xnuss->__rip;
mc->cs = xnuss->__cs;
mc->gs = xnuss->__gs;
mc->fs = xnuss->__fs;
mc->eflags = xnuss->__rflags;
Make SSL handshakes much faster This change boosts SSL handshake performance from 2,627 to ~10,000 per second which is the same level of performance as NGINX at establishing secure connections. That's impressive if we consider that redbean is a forking frontend application server. This was accomplished by: 1. Enabling either SSL session caching or SSL tickets. We choose to use tickets since they reduce network round trips too and that's a more important metric than wrk'ing localhost. 2. Fixing mbedtls_mpi_sub_abs() which is the most frequently called function. It's called about 12,000 times during an SSL handshake since it's the basis of most arithmetic operations like addition and for some strange reason it was designed to make two needless copies in addition to calling malloc and free. That's now fixed. 3. Improving TLS output buffering during the SSL handshake only, so that only a single is write and read system call is needed until blocking on the ping pong. redbean will now do a better job wiping sensitive memory from a child process as soon as it's not needed. The nice thing about fork is it's much faster than reverse proxying so the goal is to use the different address spaces along with setuid() to minimize the risk that a server key will be compromised in the event that application code is hacked.
2021-07-12 06:17:47 +00:00
mc->r8 = xnuss->__r8;
mc->r9 = xnuss->__r9;
mc->r10 = xnuss->__r10;
mc->r11 = xnuss->__r11;
mc->r12 = xnuss->__r12;
mc->r13 = xnuss->__r13;
mc->r14 = xnuss->__r14;
mc->r15 = xnuss->__r15;
Initial import
2020-06-15 14:18:57 +00:00
}
Support thread local storage
2022-05-16 20:20:08 +00:00
static privileged void linuxthreadstate2xnu(
Use noasan attribute on XNU signal trampoline The ucontext_t data structure XNU passes us doesn't appear to be part of known memory. So we can't use ASAN during the trampoline, which converts it to a Linux ucontext_t data structure. Please note that this change doesn't impact the signal handler itself, only the trampoline.
2021-03-02 06:02:27 +00:00
struct __darwin_x86_thread_state64 *xnuss, ucontext_t *uc, mcontext_t *mc) {
Improve signal handling and math - Polyfill ucontext_t on FreeBSD/OpenBSD/NetBSD - Add tests confirming signals can edit CPU state - Work towards supporting ZIP filesystem on bare metal - Add more tinymath unit tests for POSIX conformance - Add X87 and SSE status flags to crash report - Fix some bugs in blinkenlights - Fix llvm build breakage
2021-02-26 02:30:17 +00:00
xnuss->__rdi = mc->rdi;
xnuss->__rsi = mc->rsi;
xnuss->__rbp = mc->rbp;
xnuss->__rbx = mc->rbx;
xnuss->__rdx = mc->rdx;
xnuss->__rax = mc->rax;
xnuss->__rcx = mc->rcx;
xnuss->__rsp = mc->rsp;
xnuss->__rip = mc->rip;
xnuss->__cs = mc->cs;
xnuss->__gs = mc->gs;
xnuss->__fs = mc->fs;
xnuss->__rflags = mc->eflags;
Make SSL handshakes much faster This change boosts SSL handshake performance from 2,627 to ~10,000 per second which is the same level of performance as NGINX at establishing secure connections. That's impressive if we consider that redbean is a forking frontend application server. This was accomplished by: 1. Enabling either SSL session caching or SSL tickets. We choose to use tickets since they reduce network round trips too and that's a more important metric than wrk'ing localhost. 2. Fixing mbedtls_mpi_sub_abs() which is the most frequently called function. It's called about 12,000 times during an SSL handshake since it's the basis of most arithmetic operations like addition and for some strange reason it was designed to make two needless copies in addition to calling malloc and free. That's now fixed. 3. Improving TLS output buffering during the SSL handshake only, so that only a single is write and read system call is needed until blocking on the ping pong. redbean will now do a better job wiping sensitive memory from a child process as soon as it's not needed. The nice thing about fork is it's much faster than reverse proxying so the goal is to use the different address spaces along with setuid() to minimize the risk that a server key will be compromised in the event that application code is hacked.
2021-07-12 06:17:47 +00:00
xnuss->__r8 = mc->r8;
xnuss->__r9 = mc->r9;
xnuss->__r10 = mc->r10;
xnuss->__r11 = mc->r11;
xnuss->__r12 = mc->r12;
xnuss->__r13 = mc->r13;
xnuss->__r14 = mc->r14;
xnuss->__r15 = mc->r15;
}
Support thread local storage
2022-05-16 20:20:08 +00:00
static privileged void CopyFpXmmRegs(void *d, const void *s) {
Make SSL handshakes much faster This change boosts SSL handshake performance from 2,627 to ~10,000 per second which is the same level of performance as NGINX at establishing secure connections. That's impressive if we consider that redbean is a forking frontend application server. This was accomplished by: 1. Enabling either SSL session caching or SSL tickets. We choose to use tickets since they reduce network round trips too and that's a more important metric than wrk'ing localhost. 2. Fixing mbedtls_mpi_sub_abs() which is the most frequently called function. It's called about 12,000 times during an SSL handshake since it's the basis of most arithmetic operations like addition and for some strange reason it was designed to make two needless copies in addition to calling malloc and free. That's now fixed. 3. Improving TLS output buffering during the SSL handshake only, so that only a single is write and read system call is needed until blocking on the ping pong. redbean will now do a better job wiping sensitive memory from a child process as soon as it's not needed. The nice thing about fork is it's much faster than reverse proxying so the goal is to use the different address spaces along with setuid() to minimize the risk that a server key will be compromised in the event that application code is hacked.
2021-07-12 06:17:47 +00:00
size_t i;
for (i = 0; i < (8 + 16) * 16; i += 16) {
Fix MODE=aarch64 build
2023-06-08 12:17:28 +00:00
__memcpy((char *)d + i, (const char *)s + i, 16);
Make SSL handshakes much faster This change boosts SSL handshake performance from 2,627 to ~10,000 per second which is the same level of performance as NGINX at establishing secure connections. That's impressive if we consider that redbean is a forking frontend application server. This was accomplished by: 1. Enabling either SSL session caching or SSL tickets. We choose to use tickets since they reduce network round trips too and that's a more important metric than wrk'ing localhost. 2. Fixing mbedtls_mpi_sub_abs() which is the most frequently called function. It's called about 12,000 times during an SSL handshake since it's the basis of most arithmetic operations like addition and for some strange reason it was designed to make two needless copies in addition to calling malloc and free. That's now fixed. 3. Improving TLS output buffering during the SSL handshake only, so that only a single is write and read system call is needed until blocking on the ping pong. redbean will now do a better job wiping sensitive memory from a child process as soon as it's not needed. The nice thing about fork is it's much faster than reverse proxying so the goal is to use the different address spaces along with setuid() to minimize the risk that a server key will be compromised in the event that application code is hacked.
2021-07-12 06:17:47 +00:00
}
Improve signal handling and math - Polyfill ucontext_t on FreeBSD/OpenBSD/NetBSD - Add tests confirming signals can edit CPU state - Work towards supporting ZIP filesystem on bare metal - Add more tinymath unit tests for POSIX conformance - Add X87 and SSE status flags to crash report - Fix some bugs in blinkenlights - Fix llvm build breakage
2021-02-26 02:30:17 +00:00
}
Support thread local storage
2022-05-16 20:20:08 +00:00
static privileged void xnussefpustate2linux(
Use noasan attribute on XNU signal trampoline The ucontext_t data structure XNU passes us doesn't appear to be part of known memory. So we can't use ASAN during the trampoline, which converts it to a Linux ucontext_t data structure. Please note that this change doesn't impact the signal handler itself, only the trampoline.
2021-03-02 06:02:27 +00:00
struct FpuState *fs, struct __darwin_x86_float_state64 *xnufs) {
Improve signal handling and math - Polyfill ucontext_t on FreeBSD/OpenBSD/NetBSD - Add tests confirming signals can edit CPU state - Work towards supporting ZIP filesystem on bare metal - Add more tinymath unit tests for POSIX conformance - Add X87 and SSE status flags to crash report - Fix some bugs in blinkenlights - Fix llvm build breakage
2021-02-26 02:30:17 +00:00
fs->cwd = xnufs->__fpu_fcw;
fs->swd = xnufs->__fpu_fsw;
Initial import
2020-06-15 14:18:57 +00:00
fs->ftw = xnufs->__fpu_ftw;
fs->fop = xnufs->__fpu_fop;
fs->rip = xnufs->__fpu_ip;
fs->rdp = xnufs->__fpu_dp;
fs->mxcsr = xnufs->__fpu_mxcsr;
fs->mxcr_mask = xnufs->__fpu_mxcsrmask;
Make SSL handshakes much faster This change boosts SSL handshake performance from 2,627 to ~10,000 per second which is the same level of performance as NGINX at establishing secure connections. That's impressive if we consider that redbean is a forking frontend application server. This was accomplished by: 1. Enabling either SSL session caching or SSL tickets. We choose to use tickets since they reduce network round trips too and that's a more important metric than wrk'ing localhost. 2. Fixing mbedtls_mpi_sub_abs() which is the most frequently called function. It's called about 12,000 times during an SSL handshake since it's the basis of most arithmetic operations like addition and for some strange reason it was designed to make two needless copies in addition to calling malloc and free. That's now fixed. 3. Improving TLS output buffering during the SSL handshake only, so that only a single is write and read system call is needed until blocking on the ping pong. redbean will now do a better job wiping sensitive memory from a child process as soon as it's not needed. The nice thing about fork is it's much faster than reverse proxying so the goal is to use the different address spaces along with setuid() to minimize the risk that a server key will be compromised in the event that application code is hacked.
2021-07-12 06:17:47 +00:00
CopyFpXmmRegs(fs->st, &xnufs->__fpu_stmm0);
Initial import
2020-06-15 14:18:57 +00:00
}
Support thread local storage
2022-05-16 20:20:08 +00:00
static privileged void linuxssefpustate2xnu(
Use noasan attribute on XNU signal trampoline The ucontext_t data structure XNU passes us doesn't appear to be part of known memory. So we can't use ASAN during the trampoline, which converts it to a Linux ucontext_t data structure. Please note that this change doesn't impact the signal handler itself, only the trampoline.
2021-03-02 06:02:27 +00:00
struct __darwin_x86_float_state64 *xnufs, struct FpuState *fs) {
Improve signal handling and math - Polyfill ucontext_t on FreeBSD/OpenBSD/NetBSD - Add tests confirming signals can edit CPU state - Work towards supporting ZIP filesystem on bare metal - Add more tinymath unit tests for POSIX conformance - Add X87 and SSE status flags to crash report - Fix some bugs in blinkenlights - Fix llvm build breakage
2021-02-26 02:30:17 +00:00
xnufs->__fpu_fcw = fs->cwd;
xnufs->__fpu_fsw = fs->swd;
xnufs->__fpu_ftw = fs->ftw;
xnufs->__fpu_fop = fs->fop;
xnufs->__fpu_ip = fs->rip;
xnufs->__fpu_dp = fs->rdp;
xnufs->__fpu_mxcsr = fs->mxcsr;
xnufs->__fpu_mxcsrmask = fs->mxcr_mask;
Make SSL handshakes much faster This change boosts SSL handshake performance from 2,627 to ~10,000 per second which is the same level of performance as NGINX at establishing secure connections. That's impressive if we consider that redbean is a forking frontend application server. This was accomplished by: 1. Enabling either SSL session caching or SSL tickets. We choose to use tickets since they reduce network round trips too and that's a more important metric than wrk'ing localhost. 2. Fixing mbedtls_mpi_sub_abs() which is the most frequently called function. It's called about 12,000 times during an SSL handshake since it's the basis of most arithmetic operations like addition and for some strange reason it was designed to make two needless copies in addition to calling malloc and free. That's now fixed. 3. Improving TLS output buffering during the SSL handshake only, so that only a single is write and read system call is needed until blocking on the ping pong. redbean will now do a better job wiping sensitive memory from a child process as soon as it's not needed. The nice thing about fork is it's much faster than reverse proxying so the goal is to use the different address spaces along with setuid() to minimize the risk that a server key will be compromised in the event that application code is hacked.
2021-07-12 06:17:47 +00:00
CopyFpXmmRegs(&xnufs->__fpu_stmm0, fs->st);
Improve signal handling and math - Polyfill ucontext_t on FreeBSD/OpenBSD/NetBSD - Add tests confirming signals can edit CPU state - Work towards supporting ZIP filesystem on bare metal - Add more tinymath unit tests for POSIX conformance - Add X87 and SSE status flags to crash report - Fix some bugs in blinkenlights - Fix llvm build breakage
2021-02-26 02:30:17 +00:00
}
Introduce native support for MacOS ARM64 There's a new program named ape/ape-m1.c which will be used to build an embeddable binary that can load ape and elf executables. The support is mostly working so far, but still chasing down ABI issues.
2023-05-19 02:05:08 +00:00
#endif /* __x86_64__ */
Fix some issues
2023-10-10 03:18:48 +00:00
#ifdef __x86_64__
Support thread local storage
2022-05-16 20:20:08 +00:00
privileged void __sigenter_xnu(void *fn, int infostyle, int sig,
struct siginfo_xnu *xnuinfo,
struct __darwin_ucontext *xnuctx) {
Fix some issues
2023-10-10 03:18:48 +00:00
#else
privileged void __sigenter_xnu(int sig, struct siginfo_xnu *xnuinfo,
struct __darwin_ucontext *xnuctx) {
#endif
Make improvements - Every unit test now passes on Apple Silicon. The final piece of this puzzle was porting our POSIX threads cancelation support, since that works differently on ARM64 XNU vs. AMD64. Our semaphore support on Apple Silicon is also superior now compared to AMD64, thanks to the grand central dispatch library which lets *NSYNC locks go faster. - The Cosmopolitan runtime is now more stable, particularly on Windows. To do this, thread local storage is mandatory at all runtime levels, and the innermost packages of the C library is no longer being built using ASAN. TLS is being bootstrapped with a 128-byte TIB during the process startup phase, and then later on the runtime re-allocates it either statically or dynamically to support code using _Thread_local. fork() and execve() now do a better job cooperating with threads. We can now check how much stack memory is left in the process or thread when functions like kprintf() / execve() etc. call alloca(), so that ENOMEM can be raised, reduce a buffer size, or just print a warning. - POSIX signal emulation is now implemented the same way kernels do it with pthread_kill() and raise(). Any thread can interrupt any other thread, regardless of what it's doing. If it's blocked on read/write then the killer thread will cancel its i/o operation so that EINTR can be returned in the mark thread immediately. If it's doing a tight CPU bound operation, then that's also interrupted by the signal delivery. Signal delivery works now by suspending a thread and pushing context data structures onto its stack, and redirecting its execution to a trampoline function, which calls SetThreadContext(GetCurrentThread()) when it's done. - We're now doing a better job managing locks and handles. On NetBSD we now close semaphore file descriptors in forked children. Semaphores on Windows can now be canceled immediately, which means mutexes/condition variables will now go faster. Apple Silicon semaphores can be canceled too. We're now using Apple's pthread_yield() funciton. Apple _nocancel syscalls are now used on XNU when appropriate to ensure pthread_cancel requests aren't lost. The MbedTLS library has been updated to support POSIX thread cancelations. See tool/build/runitd.c for an example of how it can be used for production multi-threaded tls servers. Handles on Windows now leak less often across processes. All i/o operations on Windows are now overlapped, which means file pointers can no longer be inherited across dup() and fork() for the time being. - We now spawn a thread on Windows to deliver SIGCHLD and wakeup wait4() which means, for example, that posix_spawn() now goes 3x faster. POSIX spawn is also now more correct. Like Musl, it's now able to report the failure code of execve() via a pipe although our approach favors using shared memory to do that on systems that have a true vfork() function. - We now spawn a thread to deliver SIGALRM to threads when setitimer() is used. This enables the most precise wakeups the OS makes possible. - The Cosmopolitan runtime now uses less memory. On NetBSD for example, it turned out the kernel would actually commit the PT_GNU_STACK size which caused RSS to be 6mb for every process. Now it's down to ~4kb. On Apple Silicon, we reduce the mandatory upstream thread size to the smallest possible size to reduce the memory overhead of Cosmo threads. The examples directory has a program called greenbean which can spawn a web server on Linux with 10,000 worker threads and have the memory usage of the process be ~77mb. The 1024 byte overhead of POSIX-style thread-local storage is now optional; it won't be allocated until the pthread_setspecific/getspecific functions are called. On Windows, the threads that get spawned which are internal to the libc implementation use reserve rather than commit memory, which shaves a few hundred kb. - sigaltstack() is now supported on Windows, however it's currently not able to be used to handle stack overflows, since crash signals are still generated by WIN32. However the crash handler will still switch to the alt stack, which is helpful in environments with tiny threads. - Test binaries are now smaller. Many of the mandatory dependencies of the test runner have been removed. This ensures many programs can do a better job only linking the the thing they're testing. This caused the test binaries for LIBC_FMT for example, to decrease from 200kb to 50kb - long double is no longer used in the implementation details of libc, except in the APIs that define it. The old code that used long double for time (instead of struct timespec) has now been thoroughly removed. - ShowCrashReports() is now much tinier in MODE=tiny. Instead of doing backtraces itself, it'll just print a command you can run on the shell using our new `cosmoaddr2line` program to view the backtrace. - Crash report signal handling now works in a much better way. Instead of terminating the process, it now relies on SA_RESETHAND so that the default SIG_IGN behavior can terminate the process if necessary. - Our pledge() functionality has now been fully ported to AARCH64 Linux.
2023-09-19 03:44:45 +00:00
#pragma GCC push_options
#pragma GCC diagnostic ignored "-Wframe-larger-than="
Initial import
2020-06-15 14:18:57 +00:00
struct Goodies {
ucontext_t uc;
siginfo_t si;
} g;
Make improvements - Every unit test now passes on Apple Silicon. The final piece of this puzzle was porting our POSIX threads cancelation support, since that works differently on ARM64 XNU vs. AMD64. Our semaphore support on Apple Silicon is also superior now compared to AMD64, thanks to the grand central dispatch library which lets *NSYNC locks go faster. - The Cosmopolitan runtime is now more stable, particularly on Windows. To do this, thread local storage is mandatory at all runtime levels, and the innermost packages of the C library is no longer being built using ASAN. TLS is being bootstrapped with a 128-byte TIB during the process startup phase, and then later on the runtime re-allocates it either statically or dynamically to support code using _Thread_local. fork() and execve() now do a better job cooperating with threads. We can now check how much stack memory is left in the process or thread when functions like kprintf() / execve() etc. call alloca(), so that ENOMEM can be raised, reduce a buffer size, or just print a warning. - POSIX signal emulation is now implemented the same way kernels do it with pthread_kill() and raise(). Any thread can interrupt any other thread, regardless of what it's doing. If it's blocked on read/write then the killer thread will cancel its i/o operation so that EINTR can be returned in the mark thread immediately. If it's doing a tight CPU bound operation, then that's also interrupted by the signal delivery. Signal delivery works now by suspending a thread and pushing context data structures onto its stack, and redirecting its execution to a trampoline function, which calls SetThreadContext(GetCurrentThread()) when it's done. - We're now doing a better job managing locks and handles. On NetBSD we now close semaphore file descriptors in forked children. Semaphores on Windows can now be canceled immediately, which means mutexes/condition variables will now go faster. Apple Silicon semaphores can be canceled too. We're now using Apple's pthread_yield() funciton. Apple _nocancel syscalls are now used on XNU when appropriate to ensure pthread_cancel requests aren't lost. The MbedTLS library has been updated to support POSIX thread cancelations. See tool/build/runitd.c for an example of how it can be used for production multi-threaded tls servers. Handles on Windows now leak less often across processes. All i/o operations on Windows are now overlapped, which means file pointers can no longer be inherited across dup() and fork() for the time being. - We now spawn a thread on Windows to deliver SIGCHLD and wakeup wait4() which means, for example, that posix_spawn() now goes 3x faster. POSIX spawn is also now more correct. Like Musl, it's now able to report the failure code of execve() via a pipe although our approach favors using shared memory to do that on systems that have a true vfork() function. - We now spawn a thread to deliver SIGALRM to threads when setitimer() is used. This enables the most precise wakeups the OS makes possible. - The Cosmopolitan runtime now uses less memory. On NetBSD for example, it turned out the kernel would actually commit the PT_GNU_STACK size which caused RSS to be 6mb for every process. Now it's down to ~4kb. On Apple Silicon, we reduce the mandatory upstream thread size to the smallest possible size to reduce the memory overhead of Cosmo threads. The examples directory has a program called greenbean which can spawn a web server on Linux with 10,000 worker threads and have the memory usage of the process be ~77mb. The 1024 byte overhead of POSIX-style thread-local storage is now optional; it won't be allocated until the pthread_setspecific/getspecific functions are called. On Windows, the threads that get spawned which are internal to the libc implementation use reserve rather than commit memory, which shaves a few hundred kb. - sigaltstack() is now supported on Windows, however it's currently not able to be used to handle stack overflows, since crash signals are still generated by WIN32. However the crash handler will still switch to the alt stack, which is helpful in environments with tiny threads. - Test binaries are now smaller. Many of the mandatory dependencies of the test runner have been removed. This ensures many programs can do a better job only linking the the thing they're testing. This caused the test binaries for LIBC_FMT for example, to decrease from 200kb to 50kb - long double is no longer used in the implementation details of libc, except in the APIs that define it. The old code that used long double for time (instead of struct timespec) has now been thoroughly removed. - ShowCrashReports() is now much tinier in MODE=tiny. Instead of doing backtraces itself, it'll just print a command you can run on the shell using our new `cosmoaddr2line` program to view the backtrace. - Crash report signal handling now works in a much better way. Instead of terminating the process, it now relies on SA_RESETHAND so that the default SIG_IGN behavior can terminate the process if necessary. - Our pledge() functionality has now been fully ported to AARCH64 Linux.
2023-09-19 03:44:45 +00:00
CheckLargeStackAllocation(&g, sizeof(g));
#pragma GCC pop_options
int rva, flags;
Overhaul process spawning
2023-09-10 15:12:43 +00:00
rva = __sighandrvas[sig];
Improve signal handling and math - Polyfill ucontext_t on FreeBSD/OpenBSD/NetBSD - Add tests confirming signals can edit CPU state - Work towards supporting ZIP filesystem on bare metal - Add more tinymath unit tests for POSIX conformance - Add X87 and SSE status flags to crash report - Fix some bugs in blinkenlights - Fix llvm build breakage
2021-02-26 02:30:17 +00:00
if (rva >= kSigactionMinRva) {
Overhaul process spawning
2023-09-10 15:12:43 +00:00
flags = __sighandflags[sig];
Improve signals and memory protection - Document sigaction() - Simplify New Technology fork() code - Testing and many bug fixes for mprotect() - Distribute Intel Xed ILD in the amalgamation - Turn Xed enums into defines to avoid DWARF bloat - Improve polyfilling of SA_SIGINFO on BSDs and fix bugs - setpgid(getpid(), getpid()) on Windows will ignore CTRL-C - Work around issues relating to NT mappings being executable - Permit automatic executable stack override via `ape_stack_pf`
2022-04-13 05:11:00 +00:00
if (~flags & SA_SIGINFO) {
Introduce native support for MacOS ARM64 There's a new program named ape/ape-m1.c which will be used to build an embeddable binary that can load ape and elf executables. The support is mostly working so far, but still chasing down ABI issues.
2023-05-19 02:05:08 +00:00
((sigaction_f)(__executable_start + rva))(sig, 0, 0);
Improve signals and memory protection - Document sigaction() - Simplify New Technology fork() code - Testing and many bug fixes for mprotect() - Distribute Intel Xed ILD in the amalgamation - Turn Xed enums into defines to avoid DWARF bloat - Improve polyfilling of SA_SIGINFO on BSDs and fix bugs - setpgid(getpid(), getpid()) on Windows will ignore CTRL-C - Work around issues relating to NT mappings being executable - Permit automatic executable stack override via `ape_stack_pf`
2022-04-13 05:11:00 +00:00
} else {
Support thread local storage
2022-05-16 20:20:08 +00:00
__repstosb(&g, 0, sizeof(g));
Introduce native support for MacOS ARM64 There's a new program named ape/ape-m1.c which will be used to build an embeddable binary that can load ape and elf executables. The support is mostly working so far, but still chasing down ABI issues.
2023-05-19 02:05:08 +00:00
Improve signals and memory protection - Document sigaction() - Simplify New Technology fork() code - Testing and many bug fixes for mprotect() - Distribute Intel Xed ILD in the amalgamation - Turn Xed enums into defines to avoid DWARF bloat - Improve polyfilling of SA_SIGINFO on BSDs and fix bugs - setpgid(getpid(), getpid()) on Windows will ignore CTRL-C - Work around issues relating to NT mappings being executable - Permit automatic executable stack override via `ape_stack_pf`
2022-04-13 05:11:00 +00:00
if (xnuctx) {
Make improvements - We now serialize the file descriptor table when spawning / executing processes on Windows. This means you can now inherit more stuff than just standard i/o. It's needed by bash, which duplicates the console to file descriptor #255. We also now do a better job serializing the environment variables, so you're less likely to encounter E2BIG when using your bash shell. We also no longer coerce environ to uppercase - execve() on Windows now remotely controls its parent process to make them spawn a replacement for itself. Then it'll be able to terminate immediately once the spawn succeeds, without having to linger around for the lifetime as a shell process for proxying the exit code. When process worker thread running in the parent sees the child die, it's given a handle to the new child, to replace it in the process table. - execve() and posix_spawn() on Windows will now provide CreateProcess an explicit handle list. This allows us to remove handle locks which enables better fork/spawn concurrency, with seriously correct thread safety. Other codebases like Go use the same technique. On the other hand fork() still favors the conventional WIN32 inheritence approach which can be a little bit messy, but is *controlled* by guaranteeing perfectly clean slates at both the spawning and execution boundaries - sigset_t is now 64 bits. Having it be 128 bits was a mistake because there's no reason to use that and it's only supported by FreeBSD. By using the system word size, signal mask manipulation on Windows goes very fast. Furthermore @asyncsignalsafe funcs have been rewritten on Windows to take advantage of signal masking, now that it's much more pleasant to use. - All the overlapped i/o code on Windows has been rewritten for pretty good signal and cancelation safety. We're now able to ensure overlap data structures are cleaned up so long as you don't longjmp() out of out of a signal handler that interrupted an i/o operation. Latencies are also improved thanks to the removal of lots of "busy wait" code. Waits should be optimal for everything except poll(), which shall be the last and final demon we slay in the win32 i/o horror show. - getrusage() on Windows is now able to report RUSAGE_CHILDREN as well as RUSAGE_SELF, thanks to aggregation in the process manager thread.
2023-10-08 12:36:18 +00:00
g.uc.uc_sigmask = xnuctx->uc_sigmask;
Improve signals and memory protection - Document sigaction() - Simplify New Technology fork() code - Testing and many bug fixes for mprotect() - Distribute Intel Xed ILD in the amalgamation - Turn Xed enums into defines to avoid DWARF bloat - Improve polyfilling of SA_SIGINFO on BSDs and fix bugs - setpgid(getpid(), getpid()) on Windows will ignore CTRL-C - Work around issues relating to NT mappings being executable - Permit automatic executable stack override via `ape_stack_pf`
2022-04-13 05:11:00 +00:00
g.uc.uc_stack.ss_sp = xnuctx->uc_stack.ss_sp;
g.uc.uc_stack.ss_flags = xnuctx->uc_stack.ss_flags;
g.uc.uc_stack.ss_size = xnuctx->uc_stack.ss_size;
Introduce native support for MacOS ARM64 There's a new program named ape/ape-m1.c which will be used to build an embeddable binary that can load ape and elf executables. The support is mostly working so far, but still chasing down ABI issues.
2023-05-19 02:05:08 +00:00
#ifdef __x86_64__
Improve signals and memory protection - Document sigaction() - Simplify New Technology fork() code - Testing and many bug fixes for mprotect() - Distribute Intel Xed ILD in the amalgamation - Turn Xed enums into defines to avoid DWARF bloat - Improve polyfilling of SA_SIGINFO on BSDs and fix bugs - setpgid(getpid(), getpid()) on Windows will ignore CTRL-C - Work around issues relating to NT mappings being executable - Permit automatic executable stack override via `ape_stack_pf`
2022-04-13 05:11:00 +00:00
g.uc.uc_mcontext.fpregs = &g.uc.__fpustate;
if (xnuctx->uc_mcontext) {
if (xnuctx->uc_mcsize >=
sizeof(struct __darwin_x86_exception_state64)) {
xnuexceptionstate2linux(&g.uc.uc_mcontext,
&xnuctx->uc_mcontext->__es);
}
if (xnuctx->uc_mcsize >=
(sizeof(struct __darwin_x86_exception_state64) +
sizeof(struct __darwin_x86_thread_state64))) {
xnuthreadstate2linux(&g.uc.uc_mcontext, &xnuctx->uc_mcontext->__ss);
}
if (xnuctx->uc_mcsize >= sizeof(struct __darwin_mcontext64)) {
xnussefpustate2linux(&g.uc.__fpustate, &xnuctx->uc_mcontext->__fs);
}
Improve signal handling and math - Polyfill ucontext_t on FreeBSD/OpenBSD/NetBSD - Add tests confirming signals can edit CPU state - Work towards supporting ZIP filesystem on bare metal - Add more tinymath unit tests for POSIX conformance - Add X87 and SSE status flags to crash report - Fix some bugs in blinkenlights - Fix llvm build breakage
2021-02-26 02:30:17 +00:00
}
Introduce native support for MacOS ARM64 There's a new program named ape/ape-m1.c which will be used to build an embeddable binary that can load ape and elf executables. The support is mostly working so far, but still chasing down ABI issues.
2023-05-19 02:05:08 +00:00
#elif defined(__aarch64__)
if (xnuctx->uc_mcontext) {
Fix MODE=aarch64 build
2023-06-08 12:17:28 +00:00
__memcpy(g.uc.uc_mcontext.regs, &xnuctx->uc_mcontext->__ss.__x,
33 * 8);
Introduce native support for MacOS ARM64 There's a new program named ape/ape-m1.c which will be used to build an embeddable binary that can load ape and elf executables. The support is mostly working so far, but still chasing down ABI issues.
2023-05-19 02:05:08 +00:00
}
#endif /* __x86_64__ */
Initial import
2020-06-15 14:18:57 +00:00
}
Introduce native support for MacOS ARM64 There's a new program named ape/ape-m1.c which will be used to build an embeddable binary that can load ape and elf executables. The support is mostly working so far, but still chasing down ABI issues.
2023-05-19 02:05:08 +00:00
Improve signals and memory protection - Document sigaction() - Simplify New Technology fork() code - Testing and many bug fixes for mprotect() - Distribute Intel Xed ILD in the amalgamation - Turn Xed enums into defines to avoid DWARF bloat - Improve polyfilling of SA_SIGINFO on BSDs and fix bugs - setpgid(getpid(), getpid()) on Windows will ignore CTRL-C - Work around issues relating to NT mappings being executable - Permit automatic executable stack override via `ape_stack_pf`
2022-04-13 05:11:00 +00:00
if (xnuinfo) {
Introduce sigtimedwait() and sigwaitinfo() This change also invents sigcountset() and strsignal_r() and improves the quality of siginfo_t handling.
2022-10-10 14:36:07 +00:00
__siginfo2cosmo(&g.si, (void *)xnuinfo);
Improve signals and memory protection - Document sigaction() - Simplify New Technology fork() code - Testing and many bug fixes for mprotect() - Distribute Intel Xed ILD in the amalgamation - Turn Xed enums into defines to avoid DWARF bloat - Improve polyfilling of SA_SIGINFO on BSDs and fix bugs - setpgid(getpid(), getpid()) on Windows will ignore CTRL-C - Work around issues relating to NT mappings being executable - Permit automatic executable stack override via `ape_stack_pf`
2022-04-13 05:11:00 +00:00
}
Introduce native support for MacOS ARM64 There's a new program named ape/ape-m1.c which will be used to build an embeddable binary that can load ape and elf executables. The support is mostly working so far, but still chasing down ABI issues.
2023-05-19 02:05:08 +00:00
((sigaction_f)(__executable_start + rva))(sig, &g.si, &g.uc);
Improve signals and memory protection - Document sigaction() - Simplify New Technology fork() code - Testing and many bug fixes for mprotect() - Distribute Intel Xed ILD in the amalgamation - Turn Xed enums into defines to avoid DWARF bloat - Improve polyfilling of SA_SIGINFO on BSDs and fix bugs - setpgid(getpid(), getpid()) on Windows will ignore CTRL-C - Work around issues relating to NT mappings being executable - Permit automatic executable stack override via `ape_stack_pf`
2022-04-13 05:11:00 +00:00
if (xnuctx) {
xnuctx->uc_stack.ss_sp = g.uc.uc_stack.ss_sp;
xnuctx->uc_stack.ss_flags = g.uc.uc_stack.ss_flags;
xnuctx->uc_stack.ss_size = g.uc.uc_stack.ss_size;
Make improvements - We now serialize the file descriptor table when spawning / executing processes on Windows. This means you can now inherit more stuff than just standard i/o. It's needed by bash, which duplicates the console to file descriptor #255. We also now do a better job serializing the environment variables, so you're less likely to encounter E2BIG when using your bash shell. We also no longer coerce environ to uppercase - execve() on Windows now remotely controls its parent process to make them spawn a replacement for itself. Then it'll be able to terminate immediately once the spawn succeeds, without having to linger around for the lifetime as a shell process for proxying the exit code. When process worker thread running in the parent sees the child die, it's given a handle to the new child, to replace it in the process table. - execve() and posix_spawn() on Windows will now provide CreateProcess an explicit handle list. This allows us to remove handle locks which enables better fork/spawn concurrency, with seriously correct thread safety. Other codebases like Go use the same technique. On the other hand fork() still favors the conventional WIN32 inheritence approach which can be a little bit messy, but is *controlled* by guaranteeing perfectly clean slates at both the spawning and execution boundaries - sigset_t is now 64 bits. Having it be 128 bits was a mistake because there's no reason to use that and it's only supported by FreeBSD. By using the system word size, signal mask manipulation on Windows goes very fast. Furthermore @asyncsignalsafe funcs have been rewritten on Windows to take advantage of signal masking, now that it's much more pleasant to use. - All the overlapped i/o code on Windows has been rewritten for pretty good signal and cancelation safety. We're now able to ensure overlap data structures are cleaned up so long as you don't longjmp() out of out of a signal handler that interrupted an i/o operation. Latencies are also improved thanks to the removal of lots of "busy wait" code. Waits should be optimal for everything except poll(), which shall be the last and final demon we slay in the win32 i/o horror show. - getrusage() on Windows is now able to report RUSAGE_CHILDREN as well as RUSAGE_SELF, thanks to aggregation in the process manager thread.
2023-10-08 12:36:18 +00:00
xnuctx->uc_sigmask = g.uc.uc_sigmask;
Introduce native support for MacOS ARM64 There's a new program named ape/ape-m1.c which will be used to build an embeddable binary that can load ape and elf executables. The support is mostly working so far, but still chasing down ABI issues.
2023-05-19 02:05:08 +00:00
#ifdef __x86_64__
Improve signals and memory protection - Document sigaction() - Simplify New Technology fork() code - Testing and many bug fixes for mprotect() - Distribute Intel Xed ILD in the amalgamation - Turn Xed enums into defines to avoid DWARF bloat - Improve polyfilling of SA_SIGINFO on BSDs and fix bugs - setpgid(getpid(), getpid()) on Windows will ignore CTRL-C - Work around issues relating to NT mappings being executable - Permit automatic executable stack override via `ape_stack_pf`
2022-04-13 05:11:00 +00:00
if (xnuctx->uc_mcontext) {
if (xnuctx->uc_mcsize >=
sizeof(struct __darwin_x86_exception_state64)) {
linuxexceptionstate2xnu(&xnuctx->uc_mcontext->__es,
&g.uc.uc_mcontext);
}
if (xnuctx->uc_mcsize >=
(sizeof(struct __darwin_x86_exception_state64) +
sizeof(struct __darwin_x86_thread_state64))) {
linuxthreadstate2xnu(&xnuctx->uc_mcontext->__ss, &g.uc,
&g.uc.uc_mcontext);
}
if (xnuctx->uc_mcsize >= sizeof(struct __darwin_mcontext64)) {
linuxssefpustate2xnu(&xnuctx->uc_mcontext->__fs, &g.uc.__fpustate);
}
Improve signal handling and math - Polyfill ucontext_t on FreeBSD/OpenBSD/NetBSD - Add tests confirming signals can edit CPU state - Work towards supporting ZIP filesystem on bare metal - Add more tinymath unit tests for POSIX conformance - Add X87 and SSE status flags to crash report - Fix some bugs in blinkenlights - Fix llvm build breakage
2021-02-26 02:30:17 +00:00
}
Introduce native support for MacOS ARM64 There's a new program named ape/ape-m1.c which will be used to build an embeddable binary that can load ape and elf executables. The support is mostly working so far, but still chasing down ABI issues.
2023-05-19 02:05:08 +00:00
#elif defined(__aarch64__)
if (xnuctx->uc_mcontext) {
Fix MODE=aarch64 build
2023-06-08 12:17:28 +00:00
__memcpy(&xnuctx->uc_mcontext->__ss.__x, g.uc.uc_mcontext.regs,
33 * 8);
Introduce native support for MacOS ARM64 There's a new program named ape/ape-m1.c which will be used to build an embeddable binary that can load ape and elf executables. The support is mostly working so far, but still chasing down ABI issues.
2023-05-19 02:05:08 +00:00
}
#endif /* __x86_64__ */
Improve signal handling and math - Polyfill ucontext_t on FreeBSD/OpenBSD/NetBSD - Add tests confirming signals can edit CPU state - Work towards supporting ZIP filesystem on bare metal - Add more tinymath unit tests for POSIX conformance - Add X87 and SSE status flags to crash report - Fix some bugs in blinkenlights - Fix llvm build breakage
2021-02-26 02:30:17 +00:00
}
Initial import
2020-06-15 14:18:57 +00:00
}
}
Introduce native support for MacOS ARM64 There's a new program named ape/ape-m1.c which will be used to build an embeddable binary that can load ape and elf executables. The support is mostly working so far, but still chasing down ABI issues.
2023-05-19 02:05:08 +00:00
#ifdef __x86_64__
Fix warnings This change fixes Cosmopolitan so it has fewer opinions about compiler warnings. The whole repository had to be cleaned up to be buildable in -Werror -Wall mode. This lets us benefit from things like strict const checking. Some actual bugs might have been caught too.
2023-09-02 03:49:13 +00:00
intptr_t ax;
Initial import
2020-06-15 14:18:57 +00:00
asm volatile("syscall"
: "=a"(ax)
: "0"(0x20000b8 /* sigreturn */), "D"(xnuctx), "S"(infostyle)
: "rcx", "r11", "memory", "cc");
Add `notpossible` keyword This is the same as `unreachable` except it always traps violations, even if we're not running in MODE=dbg. This is useful for impossible conditions relating to system calls. It avoids terrifying bugs where control falls through to an unrelated function.
2022-09-04 03:35:31 +00:00
notpossible;
Fix some issues
2023-10-10 03:18:48 +00:00
#endif /* __x86_64__ */
Initial import
2020-06-15 14:18:57 +00:00
}
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