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author | Nick Lewycky <nicholas@mxc.ca> | 2009-02-22 22:15:44 +0000 |
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committer | Nick Lewycky <nicholas@mxc.ca> | 2009-02-22 22:15:44 +0000 |
commit | ca4286295f7db200724cb488a04ad15441a8ba99 (patch) | |
tree | 2726818e04828f543df88701df67cd84b37fa7d1 /tools/gold/gold-plugin.cpp | |
parent | bc989d462d0b95e275a17d62251c759d0342dbaa (diff) | |
download | external_llvm-ca4286295f7db200724cb488a04ad15441a8ba99.zip external_llvm-ca4286295f7db200724cb488a04ad15441a8ba99.tar.gz external_llvm-ca4286295f7db200724cb488a04ad15441a8ba99.tar.bz2 |
Add an option to the gold plugin to make it emit a file with the public api
list that can in turn be passed to -internalize pass through
-internalize-public-api-file.
Pass gold -plugin-opt=generate-api-file to produce "apifile.txt" in the current
directory.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65295 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'tools/gold/gold-plugin.cpp')
-rw-r--r-- | tools/gold/gold-plugin.cpp | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/tools/gold/gold-plugin.cpp b/tools/gold/gold-plugin.cpp index 2ff6aa0..9ad0450 100644 --- a/tools/gold/gold-plugin.cpp +++ b/tools/gold/gold-plugin.cpp @@ -22,6 +22,7 @@ #include <cerrno> #include <cstdlib> #include <cstring> +#include <fstream> #include <list> #include <vector> @@ -42,6 +43,8 @@ namespace { int api_version = 0; int gold_version = 0; + bool generate_api_file = false; + struct claimed_file { lto_module_t M; void *handle; @@ -96,7 +99,11 @@ ld_plugin_status onload(ld_plugin_tv *tv) { //output_type = LTO_CODEGEN_PIC_MODEL_DYNAMIC_NO_PIC; break; case LDPT_OPTION: - (*message)(LDPL_WARNING, "Ignoring flag %s", tv->tv_u.tv_string); + if (strcmp("generate-api-file", tv->tv_u.tv_string) == 0) { + generate_api_file = true; + } else { + (*message)(LDPL_WARNING, "Ignoring flag %s", tv->tv_u.tv_string); + } break; case LDPT_REGISTER_CLAIM_FILE_HOOK: { ld_plugin_register_claim_file callback; @@ -285,6 +292,15 @@ ld_plugin_status all_symbols_read_hook(void) { E = Modules.end(); I != E; ++I) lto_codegen_add_module(cg, I->M); + std::ofstream api_file; + if (generate_api_file) { + api_file.open("apifile.txt", std::ofstream::out | std::ofstream::trunc); + if (!api_file.is_open()) { + (*message)(LDPL_FATAL, "Unable to open apifile.txt for writing."); + abort(); + } + } + // 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) { @@ -298,10 +314,16 @@ ld_plugin_status all_symbols_read_hook(void) { I->syms[i].resolution == LDPR_RESOLVED_IR)) { lto_codegen_add_must_preserve_symbol(cg, I->syms[i].name); anySymbolsPreserved = true; + + if (generate_api_file) + api_file << I->syms[i].name << "\n"; } } } + if (generate_api_file) + api_file.close(); + if (!anySymbolsPreserved) { // This entire file is unnecessary! lto_codegen_dispose(cg); |