mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-07 15:03:34 +00:00
45b72485ad
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
124 lines
3.8 KiB
C
124 lines
3.8 KiB
C
#ifndef COSMOPOLITAN_LIBC_DCE_H_
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#define COSMOPOLITAN_LIBC_DCE_H_
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#include "libc/nexgen32e/kcpuids.h"
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/*─────────────────────────────────────────────────────────────────────────────╗
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│ cosmopolitan § autotune » dead code elimination │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#ifndef SUPPORT_VECTOR
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/**
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* Supported Platforms Tuning Knob (Runtime & Compile-Time)
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*
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* Cosmopolitan's design allows us to support eight platforms. We enable
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* them all by default, since we're able to do eight so efficiently. We
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* can't do more, due to the way the 80x86 instruction set is encoded.
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*
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* The user may optionally tune this bitmask, which effectively asks the
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* compiler to leave out system call polyfills for a platform, which may
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* offer marginal improvements in terms of code size and performance, at
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* the cost of portability.
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*/
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#define SUPPORT_VECTOR 0b11111111
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#endif
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#define LINUX 1
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#define METAL 2
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#define WINDOWS 4
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#define XNU 8
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#define OPENBSD 16
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#define FREEBSD 32
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/* #define YOUR_CLOUD_PLATFORM_HERE 64 /\* jtunney@gmail.com *\/ */
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/* #define YOUR_CLOUD_PLATFORM_HERE 128 /\* jtunney@gmail.com *\/ */
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#ifdef NDEBUG
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#define NoDebug() 1
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#else
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#define NoDebug() 0
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#endif
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#ifdef MODE_DBG
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#define IsModeDbg() 1
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#else
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#define IsModeDbg() 0
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#endif
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#ifdef __MFENTRY__
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#define HaveFentry() 1
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#else
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#define HaveFentry() 0
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#endif
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#ifdef TRUSTWORTHY
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#define IsTrustworthy() 1
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#else
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#define IsTrustworthy() 0
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#endif
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#ifdef SECURITY_BLANKETS
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#define UseSecurityBlankets() 1
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#else
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#define UseSecurityBlankets() 0
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#endif
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#ifdef __MGENERAL_REGS_ONLY__
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#define UseGeneralRegsOnly() 1
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#else
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#define UseGeneralRegsOnly() 0
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#endif
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#ifdef TINY
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#define IsTiny() 1
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#else
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#define IsTiny() 0
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#endif
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#ifdef __OPTIMIZE__
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#define IsOptimized() 1
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#else
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#define IsOptimized() 0
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#endif
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#if defined(__PIE__) || defined(__PIC__)
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#define IsPositionIndependent() 1
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#else
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#define IsPositionIndependent() 0
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#endif
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#define SupportsLinux() ((SUPPORT_VECTOR & LINUX) == LINUX)
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#define SupportsMetal() ((SUPPORT_VECTOR & METAL) == METAL)
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#define SupportsWindows() ((SUPPORT_VECTOR & WINDOWS) == WINDOWS)
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#define SupportsXnu() ((SUPPORT_VECTOR & XNU) == XNU)
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#define SupportsFreebsd() ((SUPPORT_VECTOR & FREEBSD) == FREEBSD)
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#define SupportsOpenbsd() ((SUPPORT_VECTOR & OPENBSD) == OPENBSD)
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#define SupportsBsd() (!!(SUPPORT_VECTOR & (XNU | FREEBSD | OPENBSD)))
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#define SupportsSystemv() \
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((SUPPORT_VECTOR & (LINUX | METAL | XNU | OPENBSD | FREEBSD)) != 0)
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#ifndef __ASSEMBLER__
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#define __HOSTOS (__hostos & SUPPORT_VECTOR)
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#define IsLinux() ((__HOSTOS & LINUX) == LINUX)
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#define IsMetal() ((__HOSTOS & METAL) == METAL)
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#define IsWindows() ((__HOSTOS & WINDOWS) == WINDOWS)
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#define IsBsd() ((__HOSTOS & (XNU | FREEBSD | OPENBSD)) != 0)
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#define IsXnu() ((__HOSTOS & XNU) == XNU)
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#define IsFreebsd() ((__HOSTOS & FREEBSD) == FREEBSD)
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#define IsOpenbsd() ((__HOSTOS & OPENBSD) == OPENBSD)
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#else
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/* clang-format off */
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#define IsLinux() $LINUX,__hostos(%rip)
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#define IsMetal() $METAL,__hostos(%rip)
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#define IsWindows() $WINDOWS,__hostos(%rip)
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#define IsBsd() $XNU|FREEBSD|OPENBSD,__hostos(%rip)
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#define IsXnu() $XNU,__hostos(%rip)
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#define IsFreebsd() $FREEBSD,__hostos(%rip)
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#define IsOpenbsd() $OPENBSD,__hostos(%rip)
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/* clang-format on */
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#endif
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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COSMOPOLITAN_C_START_
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extern const int __hostos;
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COSMOPOLITAN_C_END_
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* COSMOPOLITAN_LIBC_DCE_H_ */
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