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416fd86676
- Emulator can now test the αcτµαlly pδrταblε εxεcµταblε bootloader - Whipped up a webserver named redbean. It services 150k requests per second on a single core. Bundling assets inside zip enables extremely fast serving for two reasons. The first is that zip central directory lookups go faster than stat() system calls. The second is that both zip and gzip content-encoding use DEFLATE, therefore, compressed responses can be served via the sendfile() system call which does an in-kernel copy directly from the zip executable structure. Also note that red bean zip executables can be deployed easily to all platforms, since these native executables work on Linux, Mac, BSD, and Windows. - Address sanitizer now works very well
147 lines
7.2 KiB
C
147 lines
7.2 KiB
C
#ifndef COSMOPOLITAN_LIBC_INTERNAL_MISSIONCRITICAL_H_
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#define COSMOPOLITAN_LIBC_INTERNAL_MISSIONCRITICAL_H_
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#ifndef __STRICT_ANSI__
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#include "libc/bits/bits.h"
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#include "libc/calls/internal.h"
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#include "libc/dce.h"
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#include "libc/nexgen32e/nexgen32e.h"
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#include "libc/nexgen32e/tinystrlen.h"
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#include "libc/nt/console.h"
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#include "libc/nt/enum/version.h"
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#include "libc/nt/ntdll.h"
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#include "libc/nt/runtime.h"
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#include "libc/nt/struct/teb.h"
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#include "libc/runtime/runtime.h"
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#include "libc/sysv/consts/nr.h"
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#include "libc/sysv/consts/sig.h"
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#include "libc/sysv/errfuns.h"
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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/**
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* @fileoverview Mission critical system calls.
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*/
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#define PRINT(STR) __print(STR, tinystrlen(STR))
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#define NT_HAVE_IMPORT(SLOT) \
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((void *)*SLOT && *SLOT != (void *)&missingno /* see libc/crt/crt.S */)
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#define _EXIT(rc) \
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({ \
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int ExitAx; \
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asm volatile("syscall" \
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: "=a"(ExitAx) \
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: "0"(__NR_exit), "D"(rc) \
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: "rcx", "r11", "cc", "memory"); \
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ExitAx; \
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})
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#define GETPID() \
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({ \
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int Res; \
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asm("syscall" : "=a"(Res) : "0"(__NR_getpid) : "rcx", "r11", "cc"); \
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Res; \
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})
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#define KILL(pid, sig) \
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({ \
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int KillAx; \
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unsigned char Cf; \
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asm volatile(CFLAG_ASM("clc\n\t" \
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"syscall") \
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: CFLAG_CONSTRAINT(Cf), "=a"(KillAx) \
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: "1"(__NR_kill), "D"(pid), "S"(sig) \
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: "rcx", "r11", "cc", "memory"); \
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Cf ? -KillAx : KillAx; \
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})
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#define RAISE(SIG) \
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({ \
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int RaiseAx = -1; \
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int Sig = (SIG); \
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if (Sig == SIGTRAP) { \
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DebugBreak(); \
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} else if (!IsWindows()) { \
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RaiseAx = KILL(GETPID(), Sig); \
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} else { \
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switch (Sig) { \
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case SIGINT: \
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GenerateConsoleCtrlEvent(kNtCtrlCEvent, 0); \
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break; \
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case SIGHUP: \
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GenerateConsoleCtrlEvent(kNtCtrlCloseEvent, 0); \
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break; \
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case SIGQUIT: \
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GenerateConsoleCtrlEvent(kNtCtrlBreakEvent, 0); \
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break; \
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default: \
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for (;;) TerminateProcess(GetCurrentProcess(), 128 + Sig); \
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} \
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} \
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RaiseAx; \
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})
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#define SCHED_YIELD() \
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({ \
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int64_t SyAx; \
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if (!IsWindows()) { \
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asm volatile("syscall" \
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: "=a"(SyAx) \
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: "0"(__NR_sched_yield) \
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: "rcx", "r11", "cc", "memory"); \
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} else { \
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NtYieldExecution(); \
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} \
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0; \
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})
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#define WAIT4(PID, OPT_OUT_WSTATUS, OPTIONS, OPT_OUT_RUSAGE) \
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({ \
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int64_t WaAx; \
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if (!IsWindows()) { \
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register void *Reg10 asm("r10") = (OPT_OUT_RUSAGE); \
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asm volatile("syscall" \
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: "=a"(WaAx) \
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: "0"(__NR_wait4), "D"(PID), "S"(OPT_OUT_WSTATUS), \
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"d"(OPTIONS), "r"(Reg10) \
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: "rcx", "r11", "cc", "memory"); \
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} else { \
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WaAx = wait4$nt(PID, OPT_OUT_WSTATUS, OPTIONS, OPT_OUT_RUSAGE); \
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} \
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WaAx; \
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})
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#if 0
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/**
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* Exits on Windows the hard way.
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*/
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#endif
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#define NT_TERMINATE_PROCESS() \
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do \
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if (NtGetVersion() < kNtVersionFuture) { \
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int64_t ax, cx; \
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do \
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asm volatile( \
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"syscall" /* hook THIS system call */ \
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: "=a"(ax), "=c"(cx) \
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: "0"(NtGetVersion() < kNtVersionWindows8 \
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? 0x0029 \
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: NtGetVersion() < kNtVersionWindows81 \
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? 0x002a \
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: NtGetVersion() < kNtVersionWindows10 ? 0x002b \
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: 0x002c), \
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"1"(-1L /* GetCurrentProcess() */), "d"(42) \
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: "r11", "cc", "memory"); \
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while (!ax); \
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} \
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while (0)
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void __print(const void *, size_t);
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void __print_string(const char *);
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#define LOAD_DEFAULT_RBX() /* disabled for now b/c clang */
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#define RESTORE_RBX() /* disabled for now b/c clang */
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* !ANSI */
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#endif /* COSMOPOLITAN_LIBC_INTERNAL_MISSIONCRITICAL_H_ */
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