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Support 32-bit build. (#44)

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* Support 32-bit build.

Signatures/functions/imports/exports etc are defined as varuint32 in
the WebAssembly specification so use u32 rather than u64.

Decrease the static memory constants for 32-bit addressing mode so
that they fit within 32-bit memory constraints.

Conditionalize cmake compile of SignalHandlers.cpp so that -m32 is
passed when building 32-bit.

Add a no-op match for Reloc::X86CallPCRel4 during linking. This is
probably the wrong thing, but it allows the tests to pass. Using the
same logic from the Reloc::X86PCRel4 case did not work.
This commit is contained in:
Joel Martin
2019-01-24 15:40:25 -06:00
committed by Dan Gohman
parent 00a4e93bcd
commit fdcb2184a8
7 changed files with 162 additions and 100 deletions
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6
lib/runtime/signalhandlers/CMakeLists.txt
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@@ -1,7 +1,11 @@
cmake_minimum_required(VERSION 3.0)
project(SignalHandlers CXX)
set(CMAKE_CXX_FLAGS "-std=c++11 -fno-exceptions -fno-rtti -fPIC")
if( CMAKE_SIZEOF_VOID_P EQUAL 8 )
set(CMAKE_CXX_FLAGS "-std=c++11 -fno-exceptions -fno-rtti -fPIC")
else( CMAKE_SIZEOF_VOID_P EQUAL 8 )
set(CMAKE_CXX_FLAGS "-m32 -std=c++11 -fno-exceptions -fno-rtti -fPIC")
endif( CMAKE_SIZEOF_VOID_P EQUAL 8 )
add_library(SignalHandlers STATIC SignalHandlers.cpp)