summaryrefslogtreecommitdiffstats
path: root/contrib/llvm/tools/gold/gold-plugin.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'contrib/llvm/tools/gold/gold-plugin.cpp')
-rw-r--r--contrib/llvm/tools/gold/gold-plugin.cpp155
1 files changed, 103 insertions, 52 deletions
diff --git a/contrib/llvm/tools/gold/gold-plugin.cpp b/contrib/llvm/tools/gold/gold-plugin.cpp
index 2e5c179..2d0f5bd 100644
--- a/contrib/llvm/tools/gold/gold-plugin.cpp
+++ b/contrib/llvm/tools/gold/gold-plugin.cpp
@@ -41,6 +41,8 @@ namespace {
ld_plugin_add_symbols add_symbols = NULL;
ld_plugin_get_symbols get_symbols = NULL;
ld_plugin_add_input_file add_input_file = NULL;
+ ld_plugin_add_input_library add_input_library = NULL;
+ ld_plugin_set_extra_library_path set_extra_library_path = NULL;
ld_plugin_message message = discard_message;
int api_version = 0;
@@ -53,46 +55,62 @@ namespace {
};
lto_codegen_model output_type = LTO_CODEGEN_PIC_MODEL_STATIC;
+ std::string output_name = "";
std::list<claimed_file> Modules;
std::vector<sys::Path> Cleanup;
}
namespace options {
+ enum generate_bc { BC_NO, BC_ALSO, BC_ONLY };
static bool generate_api_file = false;
+ static generate_bc generate_bc_file = BC_NO;
static std::string bc_path;
- static const char *as_path = NULL;
+ static std::string as_path;
+ static std::vector<std::string> pass_through;
+ static std::string extra_library_path;
// Additional options to pass into the code generator.
- // Note: This array will contain all plugin options which are not claimed
+ // Note: This array will contain all plugin options which are not claimed
// as plugin exclusive to pass to the code generator.
- // For example, "generate-api-file" and "as"options are for the plugin
+ // For example, "generate-api-file" and "as"options are for the plugin
// use only and will not be passed.
static std::vector<std::string> extra;
- static void process_plugin_option(const char* opt)
+ static void process_plugin_option(const char* opt_)
{
- if (opt == NULL)
+ if (opt_ == NULL)
return;
+ llvm::StringRef opt = opt_;
- if (strcmp("generate-api-file", opt) == 0) {
+ if (opt == "generate-api-file") {
generate_api_file = true;
- } else if (strncmp("as=", opt, 3) == 0) {
- if (as_path) {
+ } else if (opt.startswith("as=")) {
+ if (!as_path.empty()) {
(*message)(LDPL_WARNING, "Path to as specified twice. "
- "Discarding %s", opt);
+ "Discarding %s", opt_);
} else {
- as_path = strdup(opt + 3);
+ as_path = opt.substr(strlen("as="));
}
- } else if(llvm::StringRef(opt).startswith("also-emit-llvm=")) {
- const char *path = opt + strlen("also-emit-llvm=");
- if (bc_path != "") {
+ } else if (opt.startswith("extra-library-path=")) {
+ extra_library_path = opt.substr(strlen("extra_library_path="));
+ } else if (opt.startswith("pass-through=")) {
+ llvm::StringRef item = opt.substr(strlen("pass-through="));
+ pass_through.push_back(item.str());
+ } else if (opt == "emit-llvm") {
+ generate_bc_file = BC_ONLY;
+ } else if (opt == "also-emit-llvm") {
+ generate_bc_file = BC_ALSO;
+ } else if (opt.startswith("also-emit-llvm=")) {
+ llvm::StringRef path = opt.substr(strlen("also-emit-llvm="));
+ generate_bc_file = BC_ALSO;
+ if (!bc_path.empty()) {
(*message)(LDPL_WARNING, "Path to the output IL file specified twice. "
- "Discarding %s", opt);
+ "Discarding %s", opt_);
} else {
bc_path = path;
}
} else {
// Save this option to pass to the code generator.
- extra.push_back(std::string(opt));
+ extra.push_back(opt);
}
}
}
@@ -111,8 +129,6 @@ ld_plugin_status onload(ld_plugin_tv *tv) {
// for services.
bool registeredClaimFile = false;
- bool registeredAllSymbolsRead = false;
- bool registeredCleanup = false;
for (; tv->tv_tag != LDPT_NULL; ++tv) {
switch (tv->tv_tag) {
@@ -122,6 +138,9 @@ ld_plugin_status onload(ld_plugin_tv *tv) {
case LDPT_GOLD_VERSION: // major * 100 + minor
gold_version = tv->tv_u.tv_val;
break;
+ case LDPT_OUTPUT_NAME:
+ output_name = tv->tv_u.tv_string;
+ break;
case LDPT_LINKER_OUTPUT:
switch (tv->tv_u.tv_val) {
case LDPO_REL: // .o
@@ -157,8 +176,6 @@ ld_plugin_status onload(ld_plugin_tv *tv) {
if ((*callback)(all_symbols_read_hook) != LDPS_OK)
return LDPS_ERR;
-
- registeredAllSymbolsRead = true;
} break;
case LDPT_REGISTER_CLEANUP_HOOK: {
ld_plugin_register_cleanup callback;
@@ -166,8 +183,6 @@ ld_plugin_status onload(ld_plugin_tv *tv) {
if ((*callback)(cleanup_hook) != LDPS_OK)
return LDPS_ERR;
-
- registeredCleanup = true;
} break;
case LDPT_ADD_SYMBOLS:
add_symbols = tv->tv_u.tv_add_symbols;
@@ -178,6 +193,12 @@ ld_plugin_status onload(ld_plugin_tv *tv) {
case LDPT_ADD_INPUT_FILE:
add_input_file = tv->tv_u.tv_add_input_file;
break;
+ case LDPT_ADD_INPUT_LIBRARY:
+ add_input_library = tv->tv_u.tv_add_input_file;
+ break;
+ case LDPT_SET_EXTRA_LIBRARY_PATH:
+ set_extra_library_path = tv->tv_u.tv_set_extra_library_path;
+ break;
case LDPT_MESSAGE:
message = tv->tv_u.tv_message;
break;
@@ -209,7 +230,7 @@ static ld_plugin_status claim_file_hook(const ld_plugin_input_file *file,
// an .a archive.
if (lseek(file->fd, file->offset, SEEK_SET) == -1) {
(*message)(LDPL_ERROR,
- "Failed to seek to archive member of %s at offset %d: %s\n",
+ "Failed to seek to archive member of %s at offset %d: %s\n",
file->name,
file->offset, sys::StrError(errno).c_str());
return LDPS_ERR;
@@ -217,7 +238,7 @@ static ld_plugin_status claim_file_hook(const ld_plugin_input_file *file,
buf = malloc(file->filesize);
if (!buf) {
(*message)(LDPL_ERROR,
- "Failed to allocate buffer for archive member of size: %d\n",
+ "Failed to allocate buffer for archive member of size: %d\n",
file->filesize);
return LDPS_ERR;
}
@@ -343,35 +364,33 @@ static ld_plugin_status all_symbols_read_hook(void) {
// If we don't preserve any symbols, libLTO will assume that all symbols are
// needed. Keep all symbols unless we're producing a final executable.
- if (output_type == LTO_CODEGEN_PIC_MODEL_STATIC) {
- bool anySymbolsPreserved = false;
- for (std::list<claimed_file>::iterator I = Modules.begin(),
+ bool anySymbolsPreserved = false;
+ for (std::list<claimed_file>::iterator I = Modules.begin(),
E = Modules.end(); I != E; ++I) {
- (*get_symbols)(I->handle, I->syms.size(), &I->syms[0]);
- for (unsigned i = 0, e = I->syms.size(); i != e; i++) {
- if (I->syms[i].resolution == LDPR_PREVAILING_DEF) {
- lto_codegen_add_must_preserve_symbol(cg, I->syms[i].name);
- anySymbolsPreserved = true;
-
- if (options::generate_api_file)
- api_file << I->syms[i].name << "\n";
- }
+ (*get_symbols)(I->handle, I->syms.size(), &I->syms[0]);
+ for (unsigned i = 0, e = I->syms.size(); i != e; i++) {
+ if (I->syms[i].resolution == LDPR_PREVAILING_DEF) {
+ lto_codegen_add_must_preserve_symbol(cg, I->syms[i].name);
+ anySymbolsPreserved = true;
+
+ if (options::generate_api_file)
+ api_file << I->syms[i].name << "\n";
}
}
+ }
- if (options::generate_api_file)
- api_file.close();
+ if (options::generate_api_file)
+ api_file.close();
- if (!anySymbolsPreserved) {
- // This entire file is unnecessary!
- lto_codegen_dispose(cg);
- return LDPS_OK;
- }
+ if (!anySymbolsPreserved) {
+ // All of the IL is unnecessary!
+ lto_codegen_dispose(cg);
+ return LDPS_OK;
}
lto_codegen_set_pic_model(cg, output_type);
lto_codegen_set_debug_model(cg, LTO_DEBUG_MODEL_DWARF);
- if (options::as_path) {
+ if (!options::as_path.empty()) {
sys::Path p = sys::Program::FindProgramByName(options::as_path);
lto_codegen_set_assembler_path(cg, p.c_str());
}
@@ -383,10 +402,20 @@ static ld_plugin_status all_symbols_read_hook(void) {
}
}
- if (options::bc_path != "") {
- bool err = lto_codegen_write_merged_modules(cg, options::bc_path.c_str());
+
+ if (options::generate_bc_file != options::BC_NO) {
+ std::string path;
+ if (options::generate_bc_file == options::BC_ONLY)
+ path = output_name;
+ else if (!options::bc_path.empty())
+ path = options::bc_path;
+ else
+ path = output_name + ".bc";
+ bool err = lto_codegen_write_merged_modules(cg, path.c_str());
if (err)
(*message)(LDPL_FATAL, "Failed to write the output file.");
+ if (options::generate_bc_file == options::BC_ONLY)
+ exit(0);
}
size_t bufsize = 0;
const char *buffer = static_cast<const char *>(lto_codegen_compile(cg,
@@ -399,26 +428,48 @@ static ld_plugin_status all_symbols_read_hook(void) {
(*message)(LDPL_ERROR, "%s", ErrMsg.c_str());
return LDPS_ERR;
}
- raw_fd_ostream *objFile =
- new raw_fd_ostream(uniqueObjPath.c_str(), ErrMsg,
- raw_fd_ostream::F_Binary);
+ raw_fd_ostream objFile(uniqueObjPath.c_str(), ErrMsg,
+ raw_fd_ostream::F_Binary);
if (!ErrMsg.empty()) {
- delete objFile;
(*message)(LDPL_ERROR, "%s", ErrMsg.c_str());
return LDPS_ERR;
}
- objFile->write(buffer, bufsize);
- objFile->close();
+ objFile.write(buffer, bufsize);
+ objFile.close();
lto_codegen_dispose(cg);
- if ((*add_input_file)(const_cast<char*>(uniqueObjPath.c_str())) != LDPS_OK) {
+ if ((*add_input_file)(uniqueObjPath.c_str()) != LDPS_OK) {
(*message)(LDPL_ERROR, "Unable to add .o file to the link.");
(*message)(LDPL_ERROR, "File left behind in: %s", uniqueObjPath.c_str());
return LDPS_ERR;
}
+ if (!options::extra_library_path.empty() &&
+ set_extra_library_path(options::extra_library_path.c_str()) != LDPS_OK) {
+ (*message)(LDPL_ERROR, "Unable to set the extra library path.");
+ return LDPS_ERR;
+ }
+
+ for (std::vector<std::string>::iterator i = options::pass_through.begin(),
+ e = options::pass_through.end();
+ i != e; ++i) {
+ std::string &item = *i;
+ const char *item_p = item.c_str();
+ if (llvm::StringRef(item).startswith("-l")) {
+ if (add_input_library(item_p + 2) != LDPS_OK) {
+ (*message)(LDPL_ERROR, "Unable to add library to the link.");
+ return LDPS_ERR;
+ }
+ } else {
+ if (add_input_file(item_p) != LDPS_OK) {
+ (*message)(LDPL_ERROR, "Unable to add .o file to the link.");
+ return LDPS_ERR;
+ }
+ }
+ }
+
Cleanup.push_back(uniqueObjPath);
return LDPS_OK;
OpenPOWER on IntegriCloud