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8261072: AArch64: Fix MacroAssembler::get_thread convention

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Reviewed-by: burban, aph
This commit is contained in:
Anton Kozlov 2021-02-12 15:11:21 +00:00 committed by Vladimir Kempik
parent 59b8d595d2
commit b670efd896
1 changed files with 6 additions and 2 deletions
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8
src/hotspot/cpu/aarch64/macroAssembler_aarch64.cpp
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@ -5268,10 +5268,14 @@ void MacroAssembler::char_array_compress(Register src, Register dst, Register le
// by the call to JavaThread::aarch64_get_thread_helper() or, indeed,
// the call setup code.
//
// aarch64_get_thread_helper() clobbers only r0, r1, and flags.
// On Linux, aarch64_get_thread_helper() clobbers only r0, r1, and flags.
// On other systems, the helper is a usual C function.
//
void MacroAssembler::get_thread(Register dst) {
RegSet saved_regs = RegSet::range(r0, r1) + lr - dst;
RegSet saved_regs =
LINUX_ONLY(RegSet::range(r0, r1) + lr - dst)
NOT_LINUX (RegSet::range(r0, r17) + lr - dst);
push(saved_regs, sp);
mov(lr, CAST_FROM_FN_PTR(address, JavaThread::aarch64_get_thread_helper));