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Improve dlopen() on Apple Silicon

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- Introduce MAP_JIT which is zero on other platforms
- Invent __jit_begin() and __jit_end() which wrap Apple's APIs
- Runtime dispatch to sys_icache_invalidate() in __clear_cache()
This commit is contained in:
Justine Tunney 2023-11-17 02:33:14 -08:00
parent 7a9e176ecf
commit 529cb4817c
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GPG key ID: BE714B4575D6E328
20 changed files with 120 additions and 117 deletions
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2
libc/sysv/consts/MAP_JIT.S Normal file
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@ -0,0 +1,2 @@
#include "libc/sysv/consts/syscon.internal.h"
.syscon mmap,MAP_JIT,0,0,0,0x00000800,0,0,0,0

2
libc/sysv/consts/RLIMIT_AS.S
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@ -1,2 +1,2 @@
#include "libc/sysv/consts/syscon.internal.h"
.syscon rlimit,RLIMIT_AS,9,9,5,5,10,2,10,0
.syscon rlimit,RLIMIT_AS,9 ,9,5,5,10,2,10,0

2
libc/sysv/consts/map.h
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@ -14,6 +14,7 @@ extern const int MAP_FIXED;
extern const int MAP_FIXED_NOREPLACE;
extern const int MAP_HASSEMAPHORE;
extern const int MAP_INHERIT;
extern const int MAP_JIT;
extern const int MAP_LOCKED;
extern const int MAP_NONBLOCK;
extern const int MAP_NORESERVE;
@ -43,5 +44,4 @@ COSMOPOLITAN_C_END_
#define MAP_ANON MAP_ANONYMOUS
#define MAP_NOCORE MAP_CONCEAL
#endif /* COSMOPOLITAN_LIBC_SYSV_CONSTS_MAP_H_ */