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https://github.com/jart/cosmopolitan.git
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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
78 lines
2.6 KiB
C
78 lines
2.6 KiB
C
#ifndef COSMOPOLITAN_TOOL_BUILD_LIB_FLAGS_H_
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#define COSMOPOLITAN_TOOL_BUILD_LIB_FLAGS_H_
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#define FLAGS_CF 0
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#define FLAGS_VF 1
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#define FLAGS_PF 2
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#define FLAGS_F1 3
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#define FLAGS_AF 4
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#define FLAGS_KF 5
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#define FLAGS_ZF 6
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#define FLAGS_SF 7
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#define FLAGS_TF 8
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#define FLAGS_IF 9
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#define FLAGS_DF 10
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#define FLAGS_OF 11
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#define FLAGS_IOPL 12
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#define FLAGS_NT 14
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#define FLAGS_F0 15
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#define FLAGS_RF 16
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#define FLAGS_VM 17
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#define FLAGS_AC 18
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#define FLAGS_VIF 19
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#define FLAGS_VIP 20
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#define FLAGS_ID 21
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#define GetLazyParityBool(f) GetParity((f) >> 24)
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#define SetLazyParityByte(f, x) (((f) & ~0xFF000000u) | ((x)&0xFFu) << 24)
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#define GetParity(WORD) \
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({ \
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unsigned Byte = (WORD); \
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Byte ^= Byte >> 4; \
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Byte ^= Byte >> 2; \
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Byte ^= Byte >> 1; \
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~Byte & 1; \
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})
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#define GetFlag(FLAGS, BIT) \
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({ \
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autotype(FLAGS) Flags = (FLAGS); \
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typeof(Flags) IsSet; \
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switch (BIT) { \
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case FLAGS_PF: \
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IsSet = GetLazyParityBool(Flags); \
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break; \
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default: \
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IsSet = (Flags >> (BIT)) & 1; \
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break; \
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} \
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IsSet; \
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})
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#define SetFlag(FLAGS, BIT, VAL) \
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({ \
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autotype(FLAGS) Flags = (FLAGS); \
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typeof(Flags) Val = (VAL); \
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typeof(Flags) One = 1; \
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switch (BIT) { \
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case FLAGS_PF: \
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Flags = SetLazyParityByte(Flags, !Val); \
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break; \
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default: \
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Flags = (Flags & ~(One << (BIT))) | Val << (BIT); \
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break; \
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} \
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Flags; \
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})
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forceinline uint64_t ExportFlags(uint64_t flags) {
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flags = SetFlag(flags, FLAGS_IOPL, 3);
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flags = SetFlag(flags, FLAGS_F1, true);
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flags = SetFlag(flags, FLAGS_F0, false);
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flags = flags & ~(1ull << FLAGS_PF);
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flags |= GetLazyParityBool(flags) << FLAGS_PF;
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return flags;
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}
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#endif /* COSMOPOLITAN_TOOL_BUILD_LIB_FLAGS_H_ */
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