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Differential D32960 Diff 99434 sys/kern/kern_sharedpage.c

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sys/kern/kern_sharedpage.c

Show First 20 Lines • Show All 299 Lines • ▼ Show 20 Linesalloc_sv_fxrng_generation(void)
}; };
} }
#endif /* RANDOM_FENESTRASX */ #endif /* RANDOM_FENESTRASX */
void void
exec_sysvec_init(void *param) exec_sysvec_init(void *param)
{ {
struct sysentvec *sv; struct sysentvec *sv;
vm_offset_t sb;
#ifdef RANDOM_FENESTRASX #ifdef RANDOM_FENESTRASX
ptrdiff_t base; ptrdiff_t base;
#endif #endif
u_int flags; u_int flags;
int res;
sv = param; sv = param;
flags = sv->sv_flags; flags = sv->sv_flags;
if ((flags & SV_SHP) == 0) if ((flags & SV_SHP) == 0)
return; return;
MPASS(sv->sv_shared_page_obj == NULL); MPASS(sv->sv_shared_page_obj == NULL);
MPASS(sv->sv_shared_page_base != 0); MPASS(sv->sv_shared_page_base != 0);
sv->sv_shared_page_obj = shared_page_obj; sv->sv_shared_page_obj = shared_page_obj;
if ((flags & SV_ABI_MASK) == SV_ABI_FREEBSD) { if ((flags & SV_ABI_MASK) == SV_ABI_FREEBSD) {
if ((flags & SV_DSO_SIG) != 0) {
sb = sv->sv_shared_page_base;
res = shared_page_fill((uintptr_t)sv->sv_szsigcode,
16, sv->sv_sigcode);
if (res == -1)
panic("copying sigtramp to shared page");
sb += res;
sv->sv_vdso_base = sb;
sb += sv->sv_sigcodeoff;
sv->sv_sigcode_base = sb;
} else {
sv->sv_sigcode_base = sv->sv_shared_page_base + sv->sv_sigcode_base = sv->sv_shared_page_base +
shared_page_fill(*(sv->sv_szsigcode), 16, sv->sv_sigcode); shared_page_fill(*(sv->sv_szsigcode), 16,
sv->sv_sigcode);
} }
jrtc27Unsubmitted
Done
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I wouldn't be surprised if some of the Linuxulator VDSO code can then reuse this, but that's someone else's problem to figure out :)

jrtc27: I wouldn't be surprised if some of the Linuxulator VDSO code can then reuse this, but that's…
}
if ((flags & SV_TIMEKEEP) != 0) { if ((flags & SV_TIMEKEEP) != 0) {
#ifdef COMPAT_FREEBSD32 #ifdef COMPAT_FREEBSD32
if ((flags & SV_ILP32) != 0) { if ((flags & SV_ILP32) != 0) {
if ((flags & SV_ABI_MASK) == SV_ABI_FREEBSD) { if ((flags & SV_ABI_MASK) == SV_ABI_FREEBSD) {
KASSERT(compat32_svtk == NULL, KASSERT(compat32_svtk == NULL,
("Compat32 already registered")); ("Compat32 already registered"));
compat32_svtk = alloc_sv_tk_compat32(); compat32_svtk = alloc_sv_tk_compat32();
} else { } else {
Show All 34 Lines
} }
void void
exec_sysvec_init_secondary(struct sysentvec *sv, struct sysentvec *sv2) exec_sysvec_init_secondary(struct sysentvec *sv, struct sysentvec *sv2)
{ {
MPASS((sv2->sv_flags & SV_ABI_MASK) == (sv->sv_flags & SV_ABI_MASK)); MPASS((sv2->sv_flags & SV_ABI_MASK) == (sv->sv_flags & SV_ABI_MASK));
MPASS((sv2->sv_flags & SV_TIMEKEEP) == (sv->sv_flags & SV_TIMEKEEP)); MPASS((sv2->sv_flags & SV_TIMEKEEP) == (sv->sv_flags & SV_TIMEKEEP));
MPASS((sv2->sv_flags & SV_SHP) != 0 && (sv->sv_flags & SV_SHP) != 0); MPASS((sv2->sv_flags & SV_SHP) != 0 && (sv->sv_flags & SV_SHP) != 0);
MPASS((sv2->sv_flags & SV_DSO_SIG) != 0 &&
(sv->sv_flags & SV_DSO_SIG) != 0);
MPASS((sv2->sv_flags & SV_RNG_SEED_VER) == MPASS((sv2->sv_flags & SV_RNG_SEED_VER) ==
(sv->sv_flags & SV_RNG_SEED_VER)); (sv->sv_flags & SV_RNG_SEED_VER));
sv2->sv_shared_page_obj = sv->sv_shared_page_obj; sv2->sv_shared_page_obj = sv->sv_shared_page_obj;
sv2->sv_sigcode_base = sv2->sv_shared_page_base + sv2->sv_sigcode_base = sv2->sv_shared_page_base +
(sv->sv_sigcode_base - sv->sv_shared_page_base); (sv->sv_sigcode_base - sv->sv_shared_page_base);
if ((sv2->sv_flags & SV_DSO_SIG) != 0) {
sv2->sv_vdso_base = sv2->sv_shared_page_base +
(sv->sv_vdso_base - sv->sv_shared_page_base);
}
if ((sv2->sv_flags & SV_ABI_MASK) != SV_ABI_FREEBSD) if ((sv2->sv_flags & SV_ABI_MASK) != SV_ABI_FREEBSD)
return; return;
if ((sv2->sv_flags & SV_TIMEKEEP) != 0) { if ((sv2->sv_flags & SV_TIMEKEEP) != 0) {
sv2->sv_timekeep_base = sv2->sv_shared_page_base + sv2->sv_timekeep_base = sv2->sv_shared_page_base +
(sv->sv_timekeep_base - sv->sv_shared_page_base); (sv->sv_timekeep_base - sv->sv_shared_page_base);
} }
if ((sv2->sv_flags & SV_RNG_SEED_VER) != 0) { if ((sv2->sv_flags & SV_RNG_SEED_VER) != 0) {
sv2->sv_fxrng_gen_base = sv2->sv_shared_page_base + sv2->sv_fxrng_gen_base = sv2->sv_shared_page_base +
(sv->sv_fxrng_gen_base - sv->sv_shared_page_base); (sv->sv_fxrng_gen_base - sv->sv_shared_page_base);
} }
} }