llvm-project

Commit Graph

Author	SHA1	Message	Date
Dan Gohman	d934cb8806	[WebAssembly] Basic support for Wasm object file encoding. With the "wasm32-unknown-unknown-wasm" triple, this allows writing out simple wasm object files, and is another step in a larger series toward migrating from ELF to general wasm object support. Note that this code and the binary format itself is still experimental. llvm-svn: 296190	2017-02-24 23:18:00 +00:00
Derek Schuff	b7d6d9e3cd	[WebAssembly] Fix CFI index to account for padding nullptr function The WebAssembly linker now creates a dummy function at index 0 to prevent miscomparisons with the NULL pointer, see https://github.com/WebAssembly/binaryen/pull/658. Thanks to pcc for pointing out this problem! Patch by Dominic Chen Differential Revision: https://reviews.llvm.org/D23137 llvm-svn: 278073	2016-08-08 23:56:01 +00:00
Derek Schuff	c64d7655b2	[WebAssembly] Support CFI for WebAssembly target Summary: This patch implements CFI for WebAssembly. It modifies the LowerTypeTest pass to pre-assign table indexes to functions that are called indirectly, and lowers type checks to test against the appropriate table indexes. It also modifies the WebAssembly backend to support a special ".indidx" assembly directive that propagates the table index assignments out to the linker. Patch by Dominic Chen Differential Revision: https://reviews.llvm.org/D21768 llvm-svn: 277398	2016-08-01 22:25:02 +00:00

Author

SHA1

Message

Date

Dan Gohman

d934cb8806

[WebAssembly] Basic support for Wasm object file encoding.

With the "wasm32-unknown-unknown-wasm" triple, this allows writing out
simple wasm object files, and is another step in a larger series toward
migrating from ELF to general wasm object support. Note that this code
and the binary format itself is still experimental.

llvm-svn: 296190

2017-02-24 23:18:00 +00:00

Derek Schuff

b7d6d9e3cd

[WebAssembly] Fix CFI index to account for padding nullptr function

The WebAssembly linker now creates a dummy function at index 0 to
prevent miscomparisons with the NULL pointer, see
https://github.com/WebAssembly/binaryen/pull/658. Thanks to pcc for
pointing out this problem!

Patch by Dominic Chen

Differential Revision: https://reviews.llvm.org/D23137

llvm-svn: 278073

2016-08-08 23:56:01 +00:00

Derek Schuff

c64d7655b2

[WebAssembly] Support CFI for WebAssembly target

Summary: This patch implements CFI for WebAssembly. It modifies the
LowerTypeTest pass to pre-assign table indexes to functions that are
called indirectly, and lowers type checks to test against the
appropriate table indexes. It also modifies the WebAssembly backend to
support a special ".indidx" assembly directive that propagates the table
index assignments out to the linker.

Patch by Dominic Chen

Differential Revision: https://reviews.llvm.org/D21768

llvm-svn: 277398

2016-08-01 22:25:02 +00:00

3 Commits