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https://github.com/jart/cosmopolitan.git
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Get Redbean fork() working on the New Technology
Now that we have understandable system call tracing on Windows, this change rewrites many of the polyfill internals for that platform, to help things get closer to tip top shape. Support for complex forking scenarios had been in a regressed state for quite some time. Now, it works! Subsequent changes should be able to address the performance.
This commit is contained in:
Justine Tunney
parent
efedef6e65
commit
0cb6b6ff4b
84 changed files with 1340 additions and 338 deletions
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@ -175,30 +175,28 @@ syscon compat SIGPOLL 29 23 23 23 23 29 # same as SIGIO
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syscon compat SIGIOT 6 6 6 6 6 6 # PDP-11 feature; same as SIGABRT
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syscon compat SIGPWR 30 30 30 30 32 30 # not implemented in most community editions of system five; consider doing this using SIGUSR1 or SIGUSR2 instead
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# open() flags ┌──────hoo boy
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# ┌──────┐
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# │┌─<<8─┴───dwFlagsAndAttributes
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# ┌││─────┐
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# │││ │ ┌┴───dwDesiredAccess
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# N │││ │ │
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# group name GNU/Systemd XNU's Not UNIX! FreeBSD OpenBSD NetBSD T │││┌─┴┐│ Commentary
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syscon open O_RDONLY 0 0 0 0 0 0xA0000000 # unix consensus & kNtGenericRead|kNtGenericExecute
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syscon open O_WRONLY 1 1 1 1 1 0x40000000 # unix consensus & kNtGenericWrite
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syscon open O_RDWR 2 2 2 2 2 0xE0000000 # unix consensus & kNtGenericRead|kNtGenericWrite|kNtGenericExecute
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syscon open O_ACCMODE 3 3 3 3 3 0xE0000000 # O_RDONLY|O_WRONLY|O_RDWR
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syscon open O_APPEND 0x00000400 8 8 8 8 0x00000004 # bsd consensus & kNtFileAppendData; won't pose issues w/ mknod(S_IFIFO)
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syscon open O_CREAT 0x00000040 0x00000200 0x00000200 0x00000200 0x00000200 0x00000040 # bsd consensus & NT faked as Linux
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syscon open O_EXCL 0x00000080 0x00000800 0x00000800 0x00000800 0x00000800 0x00000080 # bsd consensus & NT faked as Linux
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syscon open O_TRUNC 0x00000200 0x00000400 0x00000400 0x00000400 0x00000400 0x00000200 # bsd consensus & NT faked as Linux
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syscon open O_DIRECTORY 0x00010000 0x00100000 0x00020000 0x00020000 0x00200000 0x02000000 # useful hint on UNIX, but required on NT (see kNtFileFlagBackupSemantics)
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syscon open O_RANDOM 0 0 0 0 0 0x10000000 # kNtFileFlagRandomAccess
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syscon open O_SEQUENTIAL 0 0 0 0 0 0x08000000 # kNtFileFlagSequentialScan
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syscon open O_DIRECT 0x00004000 0 0x00010000 0 0x00080000 0x00200000 # kNtFileFlagNoBuffering>>8
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syscon open O_CLOEXEC 0x00080000 0x01000000 0x00100000 0x00010000 0x00400000 0x00080000 # NT faked as Linux
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syscon open O_TMPFILE 0x00410000 0 0 0 0 0x00000000 # Linux 3.11+ (c. 2013) & kNtFileAttributeTemporary|kNtFileFlagDeleteOnClose
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syscon open O_SPARSE 0 0 0 0 0 0x00040000 # we invented it
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syscon open O_NDELAY 0x00000800 0x00000004 0x00000004 0x00000004 0x00000004 0x00000800 # bsd consensus & kNtFileFlagWriteThrough>>8 → 0x00800000 (???)
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syscon open O_NONBLOCK 0x00000800 0x00000004 0x00000004 0x00000004 0x00000004 0x00000800 # bsd consensus & faked on nt to be same as linux
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# open() flags
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#
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# group name GNU/Systemd XNU's Not UNIX! FreeBSD OpenBSD NetBSD Windoze Commentary
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syscon open O_RDONLY 0 0 0 0 0 0 # consensus
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syscon open O_WRONLY 1 1 1 1 1 1 # consensus
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syscon open O_RDWR 2 2 2 2 2 2 # consensus
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syscon open O_ACCMODE 3 3 3 3 3 3 # O_RDONLY|O_WRONLY|O_RDWR
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syscon open O_APPEND 0x00000400 8 8 8 8 0x00000400 # bsd consensus & kNtFileAppendData; won't pose issues w/ mknod(S_IFIFO) [SYNC libc/calls/open-nt.c]
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syscon open O_CREAT 0x00000040 0x00000200 0x00000200 0x00000200 0x00000200 0x00000040 # bsd consensus & NT faked as Linux [SYNC libc/calls/open-nt.c]
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syscon open O_EXCL 0x00000080 0x00000800 0x00000800 0x00000800 0x00000800 0x00000080 # bsd consensus & NT faked as Linux [SYNC libc/calls/open-nt.c]
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syscon open O_TRUNC 0x00000200 0x00000400 0x00000400 0x00000400 0x00000400 0x00000200 # bsd consensus & NT faked as Linux [SYNC libc/calls/open-nt.c]
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syscon open O_DIRECTORY 0x00010000 0x00100000 0x00020000 0x00020000 0x00200000 0x00010000 # useful hint on UNIX, but required on NT (see kNtFileFlagBackupSemantics) [SYNC libc/calls/open-nt.c]
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syscon open O_DIRECT 0x00004000 0 0x00010000 0 0x00080000 0x00004000 # kNtFileFlagNoBuffering [SYNC libc/calls/open-nt.c]
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syscon open O_NDELAY 0x00000800 0x00000004 0x00000004 0x00000004 0x00000004 0x00000800 # kNtFileFlagWriteThrough [SYNC libc/calls/open-nt.c]
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syscon open O_RANDOM 0 0 0 0 0 0x80000000 # kNtFileFlagRandomAccess [SYNC libc/calls/open-nt.c]
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syscon open O_SEQUENTIAL 0 0 0 0 0 0x40000000 # kNtFileFlagSequentialScan [SYNC libc/calls/open-nt.c]
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syscon open O_COMPRESSED 0 0 0 0 0 0x20000000 # kNtFileAttributeCompressed [SYNC libc/calls/open-nt.c]
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syscon open O_INDEXED 0 0 0 0 0 0x10000000 # !kNtFileAttributeNotContentIndexed [SYNC libc/calls/open-nt.c]
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syscon open O_CLOEXEC 0x00080000 0x01000000 0x00100000 0x00010000 0x00400000 0x00080000 # NT faked as Linux [SYNC libc/calls/open-nt.c]
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syscon open O_TMPFILE 0x00410000 0 0 0 0 0x00410000 # Linux 3.11+ (c. 2013) & kNtFileAttributeTemporary|kNtFileFlagDeleteOnClose [SYNC libc/calls/open-nt.c]
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syscon open O_SPARSE 0 0 0 0 0 0 # wut
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syscon open O_NONBLOCK 0x00000800 0x00000004 0x00000004 0x00000004 0x00000004 0x00000800 # bsd consensus
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syscon open O_ASYNC 0x00002000 0x00000040 0x00000040 0x00000040 0x00000040 0 # bsd consensus
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syscon open O_NOFOLLOW 0x00020000 0x00000100 0x00000100 0x00000100 0x00000100 0 # bsd consensus
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syscon open O_NOFOLLOW_ANY 0 0x20000000 0 0 0 0 #
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@ -1,2 +1,2 @@
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#include "libc/sysv/consts/syscon.internal.h"
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.syscon open,O_ACCMODE,3,3,3,3,3,0xE0000000
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.syscon open,O_ACCMODE,3,3,3,3,3,3
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@ -1,2 +1,2 @@
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#include "libc/sysv/consts/syscon.internal.h"
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.syscon open,O_APPEND,0x00000400,8,8,8,8,0x00000004
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.syscon open,O_APPEND,0x00000400,8,8,8,8,0x00000400
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2
libc/sysv/consts/O_COMPRESSED.S
Normal file
2
libc/sysv/consts/O_COMPRESSED.S
Normal file
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@ -0,0 +1,2 @@
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#include "libc/sysv/consts/syscon.internal.h"
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.syscon open,O_COMPRESSED,0,0,0,0,0,0x20000000
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@ -1,2 +1,2 @@
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#include "libc/sysv/consts/syscon.internal.h"
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.syscon open,O_DIRECT,0x00004000,0,0x00010000,0,0x00080000,0x00200000
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.syscon open,O_DIRECT,0x00004000,0,0x00010000,0,0x00080000,0x00004000
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@ -1,2 +1,2 @@
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#include "libc/sysv/consts/syscon.internal.h"
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.syscon open,O_DIRECTORY,0x00010000,0x00100000,0x00020000,0x00020000,0x00200000,0x02000000
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.syscon open,O_DIRECTORY,0x00010000,0x00100000,0x00020000,0x00020000,0x00200000,0x00010000
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2
libc/sysv/consts/O_INDEXED.S
Normal file
2
libc/sysv/consts/O_INDEXED.S
Normal file
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@ -0,0 +1,2 @@
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#include "libc/sysv/consts/syscon.internal.h"
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.syscon open,O_INDEXED,0,0,0,0,0,0x10000000
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@ -1,2 +1,2 @@
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#include "libc/sysv/consts/syscon.internal.h"
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.syscon open,O_RANDOM,0,0,0,0,0,0x10000000
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.syscon open,O_RANDOM,0,0,0,0,0,0x80000000
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@ -1,2 +1,2 @@
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#include "libc/sysv/consts/syscon.internal.h"
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.syscon open,O_RDONLY,0,0,0,0,0,0xA0000000
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.syscon open,O_RDONLY,0,0,0,0,0,0
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@ -1,2 +1,2 @@
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#include "libc/sysv/consts/syscon.internal.h"
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.syscon open,O_RDWR,2,2,2,2,2,0xE0000000
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.syscon open,O_RDWR,2,2,2,2,2,2
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@ -1,2 +1,2 @@
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#include "libc/sysv/consts/syscon.internal.h"
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.syscon open,O_SEQUENTIAL,0,0,0,0,0,0x08000000
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.syscon open,O_SEQUENTIAL,0,0,0,0,0,0x40000000
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@ -1,2 +1,2 @@
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#include "libc/sysv/consts/syscon.internal.h"
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.syscon open,O_SPARSE,0,0,0,0,0,0x00040000
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.syscon open,O_SPARSE,0,0,0,0,0,0
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@ -1,2 +1,2 @@
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#include "libc/sysv/consts/syscon.internal.h"
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.syscon open,O_TMPFILE,0x00410000,0,0,0,0,0x00000000
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.syscon open,O_TMPFILE,0x00410000,0,0,0,0,0x00410000
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@ -1,2 +1,2 @@
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#include "libc/sysv/consts/syscon.internal.h"
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.syscon open,O_WRONLY,1,1,1,1,1,0x40000000
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.syscon open,O_WRONLY,1,1,1,1,1,1
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@ -8,6 +8,7 @@ extern const unsigned O_ACCMODE;
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extern const unsigned O_APPEND;
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extern const unsigned O_ASYNC;
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extern const unsigned O_CLOEXEC;
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extern const unsigned O_COMPRESSED;
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extern const unsigned O_CREAT;
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extern const unsigned O_DIRECT;
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extern const unsigned O_DIRECTORY;
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@ -15,6 +16,7 @@ extern const unsigned O_DSYNC;
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extern const unsigned O_EXCL;
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extern const unsigned O_EXEC;
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extern const unsigned O_EXLOCK;
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extern const unsigned O_INDEXED;
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extern const unsigned O_LARGEFILE;
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extern const unsigned O_NDELAY;
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extern const unsigned O_NOATIME;
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@ -41,10 +43,15 @@ extern const unsigned O_WRONLY;
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COSMOPOLITAN_C_END_
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#define O_ACCMODE SYMBOLIC(O_ACCMODE)
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#define O_RDONLY LITERALLY(0)
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#define O_WRONLY LITERALLY(1)
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#define O_RDWR LITERALLY(2)
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#define O_ACCMODE LITERALLY(3)
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#define O_APPEND SYMBOLIC(O_APPEND)
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#define O_ASYNC SYMBOLIC(O_ASYNC)
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#define O_CLOEXEC SYMBOLIC(O_CLOEXEC)
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#define O_COMPRESSED SYMBOLIC(O_COMPRESSED)
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#define O_CREAT SYMBOLIC(O_CREAT)
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#define O_DIRECT SYMBOLIC(O_DIRECT)
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#define O_DIRECTORY SYMBOLIC(O_DIRECTORY)
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@ -52,6 +59,7 @@ COSMOPOLITAN_C_END_
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#define O_EXCL SYMBOLIC(O_EXCL)
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#define O_EXEC SYMBOLIC(O_EXEC)
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#define O_EXLOCK SYMBOLIC(O_EXLOCK)
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#define O_INDEXED SYMBOLIC(O_INDEXED)
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#define O_LARGEFILE SYMBOLIC(O_LARGEFILE)
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#define O_NDELAY SYMBOLIC(O_NDELAY)
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#define O_NOATIME SYMBOLIC(O_NOATIME)
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@ -61,8 +69,6 @@ COSMOPOLITAN_C_END_
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#define O_NONBLOCK SYMBOLIC(O_NONBLOCK)
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#define O_PATH SYMBOLIC(O_PATH)
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#define O_RANDOM SYMBOLIC(O_RANDOM)
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#define O_RDONLY SYMBOLIC(O_RDONLY)
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#define O_RDWR SYMBOLIC(O_RDWR)
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#define O_RSYNC SYMBOLIC(O_RSYNC)
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#define O_SEARCH SYMBOLIC(O_SEARCH)
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#define O_SEQUENTIAL SYMBOLIC(O_SEQUENTIAL)
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@ -73,6 +79,5 @@ COSMOPOLITAN_C_END_
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#define O_TRUNC SYMBOLIC(O_TRUNC)
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#define O_TTY_INIT SYMBOLIC(O_TTY_INIT)
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#define O_VERIFY SYMBOLIC(O_VERIFY)
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#define O_WRONLY SYMBOLIC(O_WRONLY)
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#endif /* COSMOPOLITAN_LIBC_SYSV_CONSTS_O_H_ */
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@ -23,7 +23,6 @@
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#include "libc/sysv/consts/map.h"
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#include "libc/sysv/consts/nr.h"
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#include "libc/sysv/consts/prot.h"
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#include "libc/sysv/consts/prot.h"
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/* ▄▄▄
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▄▄▄ ▀▓▓▒▄
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@ -418,11 +417,13 @@ _init_systemfive_stack:
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// m.p[0].h 32 8
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// m.p[0].prot 40 4
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// m.p[0].flags 44 4
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// m.p[0].offset 48 8
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// m.p[0].size 56 8
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.weak _mmi
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ezlea _mmi,cx
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test %rcx,%rcx
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push %r9 # save the stack size
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jz 3f
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push %r9 # save the stack size
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lea -1(%r11,%r9),%r9 # need incl. interval
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shr $16,%r11 # for the stack range
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shr $16,%r9
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@ -432,8 +433,9 @@ _init_systemfive_stack:
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orq $-1,32(%rcx) # _mmi.s[0].h
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mov %edx,40(%rcx) # _mmi.s[0].prot
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mov %r10d,44(%rcx) # _mmi.s[0].flags
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3: pop %r9 # restore stack size
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pop %rsi
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pop %r9 # restore stack size
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mov %r9,56(%rcx) # _mmi.s[0].size
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3: pop %rsi
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pop %rdi
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leave
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// switch stacks
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