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author | Michaël Zasso <targos@protonmail.com> | 2019-10-23 15:01:12 +0200 |
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committer | Michaël Zasso <targos@protonmail.com> | 2019-11-08 15:53:20 +0100 |
commit | a9bed0b72b088b5ae8eef625a41b76225686c3f7 (patch) | |
tree | f8ea194ed1f9896c36c8c1805041b7149ec075b4 /deps/v8/src/codegen/ppc/assembler-ppc.cc | |
parent | d9fab1fdb76ae3a69b5812a7f2190cf3e58f6d75 (diff) | |
download | android-node-v8-a9bed0b72b088b5ae8eef625a41b76225686c3f7.tar.gz android-node-v8-a9bed0b72b088b5ae8eef625a41b76225686c3f7.tar.bz2 android-node-v8-a9bed0b72b088b5ae8eef625a41b76225686c3f7.zip |
deps: V8: backport 07ee86a5a28b
Original commit message:
PPC: allow for calling CFunctions without function descriptors on AIX.
The calling conventions on AIX uses function descriptors,
which means that pointers to functions do not point to code,
but instead point to metadata about them. When calling JITed code,
we must assure to use function descriptors instead of raw pointers when
needed. Before this CL 213504b, all CallCFunction on AIX were guaranteed to have
function descriptors. Starting form the CL mentioned above, CallCFunction can also
Jump to a Trampoline which does not have a function descriptor, hence a new
"CallCFunctionWithoutFunctionDescriptor" method is proposed to deal with this issue.
BUG= v8:9766
Change-Id: I9343c31c812f5d4dda8503a5adf024b24dbde072
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1825961
Commit-Queue: Milad Farazmand <miladfar@ca.ibm.com>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64357}
Refs: https://github.com/v8/v8/commit/07ee86a5a28b7f9526748ca8f765c1b704f93c0c
PR-URL: https://github.com/nodejs/node/pull/30020
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Diffstat (limited to 'deps/v8/src/codegen/ppc/assembler-ppc.cc')
-rw-r--r-- | deps/v8/src/codegen/ppc/assembler-ppc.cc | 14 |
1 files changed, 0 insertions, 14 deletions
diff --git a/deps/v8/src/codegen/ppc/assembler-ppc.cc b/deps/v8/src/codegen/ppc/assembler-ppc.cc index 17a3aba1b2..03dbb2edaa 100644 --- a/deps/v8/src/codegen/ppc/assembler-ppc.cc +++ b/deps/v8/src/codegen/ppc/assembler-ppc.cc @@ -1121,20 +1121,6 @@ void Assembler::divdu(Register dst, Register src1, Register src2, OEBit o, } #endif -// Function descriptor for AIX. -// Code address skips the function descriptor "header". -// TOC and static chain are ignored and set to 0. -void Assembler::function_descriptor() { - if (ABI_USES_FUNCTION_DESCRIPTORS) { - Label instructions; - DCHECK_EQ(pc_offset(), 0); - emit_label_addr(&instructions); - dp(0); - dp(0); - bind(&instructions); - } -} - int Assembler::instructions_required_for_mov(Register dst, const Operand& src) const { bool canOptimize = |