Skip to content

[Wasm RyuJIT] Codegen for reverse pinvoke/unmanagedcallersonly #127751

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
kg wants to merge 3 commits into
base: main
Choose a base branch
from
+12 −6
Open

[Wasm RyuJIT] Codegen for reverse pinvoke/unmanagedcallersonly #127751

Changes from all commits
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
38ce7df
Checkpoint codegen for reverse pinvoke/unmanagedcallersonly
kg Apr 30, 2026
ff718c1
Address copilot feedback
kg May 4, 2026
83feec4
jit-format
kg May 4, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
18 changes: 12 additions & 6 deletions src/coreclr/jit/codegenwasm.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,8 @@
#include "gcinfoencoder.h"

static const int LINEAR_MEMORY_INDEX = 0;
Comment thread
kg marked this conversation as resolved.
// stackPointer is the 0th global in our generated Wasm modules
static const int STACK_POINTER_GLOBAL = 0;
Comment thread
kg marked this conversation as resolved.

#ifdef TARGET_64BIT
static const instruction INS_I_load = INS_i64_load;
Expand Down Expand Up @@ -144,16 +146,20 @@ void CodeGen::genAllocLclFrame(unsigned frameSize, regNumber initReg, bool* pIni

m_compiler->unwindAllocStack(frameSize);

// TODO-WASM: reverse pinvoke frame allocation
//
unsigned initialSPLclIndex;
unsigned spLclIndex = WasmRegToIndex(spReg);
if (!m_compiler->lvaGetDesc(m_compiler->lvaWasmSpArg)->lvIsParam)
{
NYI_WASM("alloc local frame for reverse pinvoke");
initialSPLclIndex = spLclIndex;
GetEmitter()->emitIns_I(INS_global_get, EA_PTRSIZE, STACK_POINTER_GLOBAL);
GetEmitter()->emitIns_I(INS_local_set, EA_PTRSIZE, initialSPLclIndex);
}
else
{
initialSPLclIndex =
WasmRegToIndex(m_compiler->lvaGetParameterABIInfo(m_compiler->lvaWasmSpArg).Segment(0).GetRegister());
}

unsigned initialSPLclIndex =
WasmRegToIndex(m_compiler->lvaGetParameterABIInfo(m_compiler->lvaWasmSpArg).Segment(0).GetRegister());
unsigned spLclIndex = WasmRegToIndex(spReg);
assert(initialSPLclIndex == spLclIndex);
if (frameSize != 0)
{
Expand Down
Loading