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kern: fully implement slabheap init

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This commit is contained in:
Michael Scire 2020-01-30 01:41:59 -08:00
parent 7d6b16d7fb
commit d5a4c17ee7
12 changed files with 319 additions and 13 deletions
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16
libraries/libmesosphere/include/mesosphere/arch/arm64/kern_k_spin_lock.hpp
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@ -30,21 +30,21 @@ namespace ams::kern::arm64 {
__asm__ __volatile__(
" prfm pstl1keep, %[packed_tickets]\n"
"loop1:\n"
"1:\n"
" ldaxr %w[tmp0], %[packed_tickets]\n"
" add %w[tmp0], %w[tmp0], #0x10000\n"
" stxr %w[tmp1], %w[tmp0], %[packed_tickets]\n"
" cbnz %w[tmp1], loop1\n"
" cbnz %w[tmp1], 1b\n"
" \n"
" and %w[tmp1], %w[tmp0], #0xFFFF\n"
" cmp %w[tmp1], %w[tmp0], lsr #16\n"
" b.eq done"
" sevl\n"
"loop2:\n"
"2:\n"
" wfe\n"
" ldaxrh %w[tmp1], %[packed_tickets]\n"
" cmp %w[tmp1], %w[tmp0], lsr #16\n"
" b.ne loop2\n"
" b.ne 2b\n"
"done:\n"
: [tmp0]"=&r"(tmp0), [tmp1]"=&r"(tmp1), [packed_tickets]"+Q"(this->packed_tickets)
:
@ -76,18 +76,18 @@ namespace ams::kern::arm64 {
__asm__ __volatile__(
" prfm pstl1keep, %[next_ticket]\n"
"loop1:\n"
"1:\n"
" ldaxrh %w[tmp0], %[next_ticket]\n"
" add %w[tmp1], %w[tmp0], #0x1\n"
" stxrh %w[got_lock], %w[tmp1], %[next_ticket]\n"
" cbnz %w[got_lock], loop1\n"
" cbnz %w[got_lock], 1b\n"
" \n"
" sevl\n"
"loop2:\n"
"2:\n"
" wfe\n"
" ldaxrh %w[tmp1], %[current_ticket]\n"
" cmp %w[tmp1], %w[tmp0]\n"
" b.ne loop2\n"
" b.ne 2b\n"
: [tmp0]"=&r"(tmp0), [tmp1]"=&r"(tmp1), [got_lock]"=&r"(got_lock), [next_ticket]"+Q"(this->next_ticket)
: [current_ticket]"Q"(this->current_ticket)
: "cc", "memory"