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Add C++ demangling to privileged runtime

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Cosmo will now print C++ symbols correctly in --ftrace logs and
backtraces. Doing this required reducing the memory requirement
of the __demangle() function by 3x. This was accomplished using
16-bit indices and 16-bit malloc granularity. That puts a limit
on the longest symbol we can successfully decode, which I think
would be around 6553 characters long, given a 65536-byte buffer
This commit is contained in:
Justine Tunney 2024-06-01 19:57:32 -07:00
parent dcd626edf8
commit 165c6b37e2
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GPG key ID: BE714B4575D6E328
13 changed files with 727 additions and 284 deletions
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8
libc/mem/alg.h
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@ -8,10 +8,10 @@ void *bsearch_r(const void *, const void *, size_t, size_t,
int (*)(const void *, const void *, void *), void *)
paramsnonnull((1, 2, 5)) nosideeffect;
void djbsort(int32_t *, size_t) libcesque;
void qsort3(void *, size_t, size_t, int (*)(const void *, const void *))
paramsnonnull();
void qsort(void *, size_t, size_t, int (*)(const void *, const void *))
paramsnonnull();
void qsort3(void *, size_t, size_t,
int (*)(const void *, const void *)) libcesque paramsnonnull();
void qsort(void *, size_t, size_t,
int (*)(const void *, const void *)) libcesque paramsnonnull();
void qsort_r(void *, size_t, size_t,
int (*)(const void *, const void *, void *), void *)
paramsnonnull((1, 4));