siger-young created this revision.
Herald added a subscriber: mgorny.
siger-young requested review of this revision.
Herald added a project: LLDB.
Herald added a subscriber: lldb-commits.
Add necessary typemaps for Lua bindings.
Signed-off-by: Siger Yang <[email protected]>
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D108090
Files:
lldb/CMakeLists.txt
lldb/bindings/lua/CMakeLists.txt
lldb/bindings/lua/lua-typemaps.swig
lldb/bindings/lua/lua-wrapper.swig
lldb/bindings/lua/lua.swig
lldb/source/API/liblldb-private.exports
lldb/source/API/liblldb.exports
Index: lldb/source/API/liblldb.exports
===================================================================
--- lldb/source/API/liblldb.exports
+++ lldb/source/API/liblldb.exports
@@ -2,3 +2,4 @@
_ZNK4lldb*
init_lld*
PyInit__lldb*
+luaopen_lldb*
Index: lldb/source/API/liblldb-private.exports
===================================================================
--- lldb/source/API/liblldb-private.exports
+++ lldb/source/API/liblldb-private.exports
@@ -4,3 +4,4 @@
_ZNK12lldb_private*
init_lld*
PyInit__lldb*
+luaopen_lldb*
Index: lldb/bindings/lua/lua.swig
===================================================================
--- lldb/bindings/lua/lua.swig
+++ lldb/bindings/lua/lua.swig
@@ -17,6 +17,10 @@
#include "llvm/Support/Error.h"
#include "llvm/Support/FormatVariadic.h"
#include "../bindings/lua/lua-swigsafecast.swig"
+
+// required headers for typemaps
+#include "lldb/Host/File.h"
+
using namespace lldb_private;
using namespace lldb;
%}
Index: lldb/bindings/lua/lua-wrapper.swig
===================================================================
--- lldb/bindings/lua/lua-wrapper.swig
+++ lldb/bindings/lua/lua-wrapper.swig
@@ -6,6 +6,19 @@
%}
+%runtime %{
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void LLDBSwigLuaCallLuaLogOutputCallback(const char *str, void *baton);
+int LLDBSwigLuaCloseFileHandle(lua_State *L);
+
+#ifdef __cplusplus
+}
+#endif
+%}
+
%wrapper %{
// This function is called from Lua::CallBreakpointCallback
@@ -88,5 +101,20 @@
return stop;
}
+SWIGEXPORT void
+LLDBSwigLuaCallLuaLogOutputCallback(const char *str, void *baton) {
+ lua_State *L = (lua_State *)baton;
+
+ lua_pushlightuserdata(L, (void *)&LLDBSwigLuaCallLuaLogOutputCallback);
+ lua_gettable(L, LUA_REGISTRYINDEX);
+
+ // FIXME: There's no way to report errors back to the user
+ lua_pushstring(L, str);
+ lua_pcall(L, 1, 0, 0);
+}
+
+int LLDBSwigLuaCloseFileHandle(lua_State *L) {
+ return luaL_error(L, "You cannot close a file handle used by lldb.");
+}
%}
Index: lldb/bindings/lua/lua-typemaps.swig
===================================================================
--- lldb/bindings/lua/lua-typemaps.swig
+++ lldb/bindings/lua/lua-typemaps.swig
@@ -12,7 +12,7 @@
// Primitive integer mapping
%typemap(in,checkfn="lua_isinteger") TYPE
-%{ $1 = (TYPE)lua_tointeger(L, $input); %}
+%{ $1 = ($type)lua_tointeger(L, $input); %}
%typemap(in,checkfn="lua_isinteger") const TYPE&($basetype temp)
%{ temp=($basetype)lua_tointeger(L,$input); $1=&temp;%}
%typemap(out) TYPE
@@ -54,6 +54,7 @@
LLDB_NUMBER_TYPEMAP(long long);
LLDB_NUMBER_TYPEMAP(unsigned long long);
LLDB_NUMBER_TYPEMAP(signed long long);
+LLDB_NUMBER_TYPEMAP(enum SWIGTYPE);
%apply unsigned long { size_t };
%apply const unsigned long & { const size_t & };
@@ -77,7 +78,7 @@
%typemap(in) (char *dst, size_t dst_len) {
$2 = luaL_checkinteger(L, $input);
if ($2 <= 0) {
- return luaL_error(L, "Positive integer expected");
+ return luaL_error(L, "Positive integer expected");
}
$1 = (char *) malloc($2);
}
@@ -86,6 +87,9 @@
// as char data instead of byte data.
%typemap(in) (void *char_buf, size_t size) = (char *dst, size_t dst_len);
+// Also SBProcess::ReadMemory.
+%typemap(in) (void *buf, size_t size) = (char *dst, size_t dst_len);
+
// Return the char buffer. Discarding any previous return result
%typemap(argout) (char *dst, size_t dst_len) {
lua_pop(L, 1); // Blow away the previous result
@@ -102,4 +106,178 @@
// as char data instead of byte data.
%typemap(argout) (void *char_buf, size_t size) = (char *dst, size_t dst_len);
+// Also SBProcess::ReadMemory.
+%typemap(argout) (void *buf, size_t size) = (char *dst, size_t dst_len);
+
//===----------------------------------------------------------------------===//
+
+// Typemap for handling a snprintf-like API like SBThread::GetStopDescription.
+
+%typemap(in) (char *dst_or_null, size_t dst_len) {
+ $2 = luaL_checkinteger(L, $input);
+ if ($2 <= 0) {
+ return luaL_error(L, "Positive integer expected");
+ }
+ $1 = (char *)malloc($2);
+}
+
+%typemap(argout) (char *dst_or_null, size_t dst_len) {
+ lua_pop(L, 1); // Blow away the previous result
+ lua_pushlstring(L, (const char *)$1, $result);
+ free($1);
+ // SWIG_arg was already incremented
+}
+
+//===----------------------------------------------------------------------===//
+
+// Typemap for handling SBModule::GetVersion
+
+%typemap(in) (uint32_t *versions, uint32_t num_versions) {
+ $2 = 99;
+ $1 = (uint32_t *)malloc(sizeof(uint32_t) * $2);
+}
+
+%typemap(argout) (uint32_t *versions, uint32_t num_versions) {
+ uint32_t count = result;
+ if (count >= $2)
+ count = $2;
+ lua_newtable(L);
+ int i = 0;
+ while (i++ < count) {
+ lua_pushinteger(L, $1[i - 1]);
+ lua_seti(L, -2, i);
+ }
+ SWIG_arg++;
+ free($1);
+}
+
+//===----------------------------------------------------------------------===//
+
+// Typemap for handling SBDebugger::SetLoggingCallback
+
+%typemap(in) (lldb::LogOutputCallback log_callback, void *baton) {
+ $1 = LLDBSwigLuaCallLuaLogOutputCallback;
+ $2 = (void *)L;
+
+ luaL_checktype(L, 2, LUA_TFUNCTION);
+ lua_settop(L, 2);
+
+ lua_pushlightuserdata(L, (void *)&LLDBSwigLuaCallLuaLogOutputCallback);
+ lua_insert(L, 2);
+ lua_settable(L, LUA_REGISTRYINDEX);
+}
+
+//===----------------------------------------------------------------------===//
+
+// Typemap for handling SBEvent::SBEvent(uint32_t event, const char *cstr, uint32_t cstr_len)
+
+%typemap(in) (const char *cstr, uint32_t cstr_len) {
+ $1 = (char *)luaL_checklstring(L, $input, (size_t *)&$2);
+}
+
+// Typemap for handling SBProcess::PutSTDIN
+
+%typemap(in) (const char *src, size_t src_len) {
+ $1 = (char *)luaL_checklstring(L, $input, &$2);
+}
+
+// Typemap for handling SBProcess::WriteMemory, SBTarget::GetInstructions...
+
+%typemap(in) (const void *buf, size_t size),
+ (const void *data, size_t data_len) {
+ $1 = (void *)luaL_checklstring(L, $input, &$2);
+}
+
+//===----------------------------------------------------------------------===//
+
+// Typemap for handling char ** in SBTarget::LaunchSimple, SBTarget::Launch...
+
+%typemap(in) char ** {
+ if (lua_istable(L, $input)) {
+ size_t size = lua_rawlen(L, $input);
+ $1 = (char **)malloc((size + 1) * sizeof(char *));
+ int i = 0, j = 0;
+ while (i++ < size) {
+ lua_rawgeti(L, $input, i);
+ $1[j++] = (char *)lua_tostring(L, -1);
+ lua_pop(L, 1);
+ }
+ $1[j] = 0;
+ } else if (lua_isnil(L, $input)) {
+ $1 = NULL;
+ }
+}
+
+%typecheck(SWIG_TYPECHECK_STRING_ARRAY) char ** {
+ $1 = (lua_istable(L, $input) || lua_isnil(L, $input)) ? 1 : 0;
+}
+
+//===----------------------------------------------------------------------===//
+
+// Typemap for file handles (e.g. used in SBDebugger::SetOutputFile)
+
+%typemap(in) lldb::FileSP {
+ luaL_Stream *p = (luaL_Stream *)luaL_checkudata(L, $input, LUA_FILEHANDLE);
+ FileSP file_sp;
+ file_sp = std::make_shared<NativeFile>(p->f, false);
+ if (!file_sp->IsValid())
+ return luaL_error(L, "Invalid file");
+ $1 = file_sp;
+}
+
+%typecheck(SWIG_TYPECHECK_POINTER) lldb::FileSP {
+ $1 = lua_isuserdata(L, $input) ? 1 : 0;
+}
+
+// Typemap for file handles (e.g. used in SBDebugger::GetOutputFileHandle)
+
+%typemap(out) lldb::FileSP {
+ lldb::FileSP &sp = $1;
+ if (sp && sp->IsValid()) {
+ luaL_Stream *p = (luaL_Stream *)lua_newuserdatauv(L, sizeof(luaL_Stream), 0);
+ p->closef = &LLDBSwigLuaCloseFileHandle;
+ p->f = sp->GetStream();
+ luaL_setmetatable(L, LUA_FILEHANDLE);
+ SWIG_arg++;
+ }
+}
+
+//===----------------------------------------------------------------------===//
+
+// Typemap for SBData::CreateDataFromUInt64Array, SBData::SetDataFromUInt64Array ...
+
+%typemap(in) (uint64_t* array, size_t array_len),
+ (uint32_t* array, size_t array_len),
+ (int64_t* array, size_t array_len),
+ (int32_t* array, size_t array_len),
+ (double* array, size_t array_len) {
+ if (lua_istable(L, $input)) {
+ $2 = lua_rawlen(L, $input);
+ $1 = ($1_ltype)malloc(($2) * sizeof($*1_type));
+ int i = 0, j = 0;
+ while (i++ < $2) {
+ lua_rawgeti(L, $input, i);
+ $1[j++] = ($*1_ltype)lua_tonumber(L, -1);
+ lua_pop(L, 1);
+ }
+ } else if (lua_isnil(L, $input)) {
+ $1 = NULL;
+ $2 = 0;
+ }
+}
+
+//===----------------------------------------------------------------------===//
+
+// Typemap for SBCommandReturnObject::PutCString
+
+%typemap(in) (const char *string, int len) {
+ if (lua_isnil(L, $input)) {
+ $1 = NULL;
+ $2 = 0;
+ }
+ else {
+ $1 = (char *)luaL_checklstring(L, $input, (size_t *)&$2);
+ }
+}
+
+//===----------------------------------------------------------------------===//
\ No newline at end of file
Index: lldb/bindings/lua/CMakeLists.txt
===================================================================
--- lldb/bindings/lua/CMakeLists.txt
+++ lldb/bindings/lua/CMakeLists.txt
@@ -17,3 +17,10 @@
add_custom_target(swig_wrapper_lua ALL DEPENDS
${CMAKE_CURRENT_BINARY_DIR}/LLDBWrapLua.cpp
)
+
+function(create_lua_package swig_target working_dir pkg_dir)
+ cmake_parse_arguments(ARG "NOINIT" "" "FILES" ${ARGN})
+ add_custom_command(TARGET ${swig_target} POST_BUILD VERBATIM
+ COMMAND ${CMAKE_COMMAND} -E make_directory ${pkg_dir}
+ WORKING_DIRECTORY ${working_dir})
+endfunction()
Index: lldb/CMakeLists.txt
===================================================================
--- lldb/CMakeLists.txt
+++ lldb/CMakeLists.txt
@@ -51,6 +51,24 @@
CACHE STRING "Path where Python modules are installed, relative to install prefix")
endif ()
+if (LLDB_ENABLE_LUA)
+ # FIXME: Lua 5.3 is hardcoded but it should support 5.3+!
+ find_program(Lua_EXECUTABLE lua5.3)
+ if (NOT Lua_EXECUTABLE)
+ message(FATAL_ERROR "Lua executable not found")
+ else ()
+ execute_process(
+ COMMAND ${Lua_EXECUTABLE}
+ -e "for w in string.gmatch(package.cpath, ';?([^;]+);?') do \
+ if string.match(w, '%?%.so') then print(string.sub(w, 1, #w - 4)) break end end"
+ OUTPUT_VARIABLE LLDB_LUA_DEFAULT_INSTALL_PATH
+ OUTPUT_STRIP_TRAILING_WHITESPACE)
+ file(TO_CMAKE_PATH ${LLDB_LUA_DEFAULT_INSTALL_PATH} LLDB_LUA_DEFAULT_INSTALL_PATH)
+ set(LLDB_LUA_INSTALL_PATH ${LLDB_LUA_DEFAULT_INSTALL_PATH}
+ CACHE STRING "Path where Lua modules are installed")
+ endif ()
+endif ()
+
if (LLDB_ENABLE_PYTHON OR LLDB_ENABLE_LUA)
add_subdirectory(bindings)
endif ()
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