mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 19:43:32 +00:00
8f522cb702
This change progresses our AARCH64 support:
- The AARCH64 build and tests are now passing
- Add 128-bit floating-point support to printf()
- Fix clone() so it initializes cosmo's x28 TLS register
- Fix TLS memory layout issue with aarch64 _Alignas vars
- Revamp microbenchmarking tools so they work on aarch64
- Make some subtle improvements to aarch64 crash reporting
- Make kisdangerous() memory checks more accurate on aarch64
- Remove sys_open() since it's not available on Linux AARCH64
This change makes general improvements to Cosmo and Redbean:
- Introduce GetHostIsa() function in Redbean
- You can now feature check using pledge(0, 0)
- You can now feature check using unveil("",0)
- Refactor some more x86-specific asm comments
- Refactor and write docs for some libm functions
- Make the mmap() API behave more similar to Linux
- Fix WIFSIGNALED() which wrongly returned true for zero
- Rename some obscure cosmo keywords from noFOO to dontFOO
79 lines
2.3 KiB
C
79 lines
2.3 KiB
C
#ifndef COSMOPOLITAN_LIBC_THREAD_TLS_H_
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#define COSMOPOLITAN_LIBC_THREAD_TLS_H_
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#define TLS_ALIGNMENT 64
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#define TIB_FLAG_TIME_CRITICAL 1
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#define TIB_FLAG_VFORKED 2
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#define TIB_FLAG_WINCRASHING 4
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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COSMOPOLITAN_C_START_
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struct CosmoFtrace { /* 16 */
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bool ft_once; /* 0 */
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bool ft_noreentry; /* 1 */
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int ft_skew; /* 4 */
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int64_t ft_lastaddr; /* 8 */
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};
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struct CosmoTib {
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struct CosmoTib *tib_self; /* 0x00 */
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struct CosmoFtrace tib_ftracer; /* 0x08 */
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void *tib_garbages; /* 0x18 */
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intptr_t tib_locale; /* 0x20 */
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intptr_t tib_pthread; /* 0x28 */
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struct CosmoTib *tib_self2; /* 0x30 */
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_Atomic(int32_t) tib_tid; /* 0x38 transitions -1 → tid → 0 */
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int32_t tib_errno; /* 0x3c */
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uint64_t tib_flags; /* 0x40 */
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void *tib_nsync;
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int tib_ftrace; /* inherited */
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int tib_strace; /* inherited */
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uint64_t tib_sigmask; /* inherited */
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void *tib_reserved4;
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void *tib_reserved5;
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void *tib_reserved6;
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void *tib_reserved7;
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void *tib_keys[128];
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};
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extern int __threaded;
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extern unsigned __tls_index;
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#ifdef __x86_64__
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extern bool __tls_enabled;
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#define __tls_enabled_set(x) __tls_enabled = x
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#else
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#define __tls_enabled true
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#define __tls_enabled_set(x) (void)0
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#endif
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void __require_tls(void);
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void __set_tls(struct CosmoTib *);
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#ifdef __x86_64__
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/**
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* Returns location of thread information block.
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*
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* This can't be used in privileged functions.
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*/
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#define __get_tls() \
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({ \
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struct CosmoTib *_t; \
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asm("mov\t%%fs:0,%0" : "=r"(_t) : /* no inputs */ : "memory"); \
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_t; \
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})
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#define __adj_tls(tib) (tib)
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#elif defined(__aarch64__)
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#define __get_tls() \
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({ \
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register struct CosmoTib *_t asm("x28"); \
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_t - 1; \
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})
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#define __adj_tls(tib) ((struct CosmoTib *)(tib) + 1)
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#endif
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COSMOPOLITAN_C_END_
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* COSMOPOLITAN_LIBC_THREAD_TLS_H_ */
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