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Get cosmo_dlopen() working better on System Five

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Imported functions are now aspected with a trampoline that blocks
signals and changes the thread-local storage register. This means
bigger more complicated libraries can now be imported even though
the whole technique remains fundamentally unsafe.
This commit is contained in:
Justine Tunney 2023-11-15 10:48:31 -08:00
parent 3a470ed356
commit e4584ace81
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GPG key ID: BE714B4575D6E328
6 changed files with 304 additions and 190 deletions
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3
libc/log/oncrash_amd64.c
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@ -147,6 +147,9 @@ relegated static char *ShowGeneralRegisters(char *p, ucontext_t *ctx) {
ctx->uc_mcontext.fpregs ? ctx->uc_mcontext.fpregs->swd : 0,
ctx->uc_mcontext.fpregs ? ctx->uc_mcontext.fpregs->mxcsr : 0);
*p++ = '\n';
p = stpcpy(p, "TLS ");
p = HexCpy(p, (long)__get_tls(), 64);
*p++ = '\n';
return p;
}