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https://github.com/jart/cosmopolitan.git
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6ffed14b9c
Actually Portable Executable now supports Android. Cosmo's old mmap code required a 47 bit address space. The new implementation is very agnostic and supports both smaller address spaces (e.g. embedded) and even modern 56-bit PML5T paging for x86 which finally came true on Zen4 Threadripper Cosmopolitan no longer requires UNIX systems to observe the Windows 64kb granularity; i.e. sysconf(_SC_PAGE_SIZE) will now report the host native page size. This fixes a longstanding POSIX conformance issue, concerning file mappings that overlap the end of file. Other aspects of conformance have been improved too, such as the subtleties of address assignment and and the various subtleties surrounding MAP_FIXED and MAP_FIXED_NOREPLACE On Windows, mappings larger than 100 megabytes won't be broken down into thousands of independent 64kb mappings. Support for MAP_STACK is removed by this change; please use NewCosmoStack() instead. Stack overflow avoidance is now being implemented using the POSIX thread APIs. Please use GetStackBottom() and GetStackAddr(), instead of the old error-prone GetStackAddr() and HaveStackMemory() APIs which are removed.
71 lines
2.4 KiB
C
71 lines
2.4 KiB
C
#ifndef COSMOPOLITAN_LIBC_INTRIN_ASAN_H_
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#define COSMOPOLITAN_LIBC_INTRIN_ASAN_H_
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#include "libc/calls/struct/iovec.h"
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#include "libc/intrin/asancodes.h"
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#include "libc/macros.internal.h"
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#include "libc/nexgen32e/stackframe.h"
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COSMOPOLITAN_C_START_
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#ifdef MODE_DBG
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// MODE=dbg
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// O(32mb) of morgue memory
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// Θ(64) bytes of malloc overhead
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#define ASAN_MORGUE_ITEMS 512
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#define ASAN_MORGUE_THRESHOLD 65536
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#define ASAN_TRACE_ITEMS 16
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#else
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// MODE=asan
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// O(32mb) of morgue memory
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// Θ(32) bytes of malloc overhead
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#define ASAN_MORGUE_ITEMS 512
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#define ASAN_MORGUE_THRESHOLD 65536
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#define ASAN_TRACE_ITEMS 4
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#endif
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#define SHADOW(x) ((signed char *)(((intptr_t)(x) >> kAsanScale) + kAsanMagic))
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#define UNSHADOW(x) ((void *)(MAX(0, (intptr_t)(x) - kAsanMagic) << kAsanScale))
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#define __asan_unreachable() \
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do { \
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kprintf("%s:%d: __asan_unreachable()\n", __FILE__, __LINE__); \
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__builtin_trap(); \
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} while (0)
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typedef void __asan_die_f(void);
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struct AsanFault {
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signed char kind;
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const signed char *shadow;
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};
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struct AsanTrace {
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uint32_t p[ASAN_TRACE_ITEMS]; // assumes linkage into 32-bit space
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};
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void __asan_unpoison(void *, long);
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void __asan_poison(void *, long, signed char);
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void __asan_verify(const void *, size_t);
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void __asan_verify_str(const char *);
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void __asan_shadow(void *, size_t);
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void __asan_unshadow(void *, size_t);
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bool __asan_is_valid(const void *, long) nosideeffect;
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bool __asan_is_valid_str(const char *) nosideeffect;
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bool __asan_is_valid_strlist(char *const *) nosideeffect;
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bool __asan_is_valid_iov(const struct iovec *, int) nosideeffect;
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struct AsanFault __asan_check(const void *, long) nosideeffect;
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struct AsanFault __asan_check_str(const char *) nosideeffect;
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int __asan_is_leaky(void *);
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int __asan_print_trace(void *);
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bool __asan_is_mapped(const void *);
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__asan_die_f *__asan_die(void) __wur;
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void __asan_memset(void *, char, size_t);
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size_t __asan_get_heap_size(const void *);
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void *__asan_memcpy(void *, const void *, size_t);
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void __asan_rawtrace(struct AsanTrace *, const struct StackFrame *);
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void __asan_report_memory_origin(const unsigned char *, int, signed char);
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void __asan_report_memory_origin_image(intptr_t, int);
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void __asan_report_memory_origin_heap(const unsigned char *, int);
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COSMOPOLITAN_C_END_
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#endif /* COSMOPOLITAN_LIBC_INTRIN_ASAN_H_ */
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