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If present, use gold's support for getting a file view. This prevents having

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to map the file both in the linker and in the plugin.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129109 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2011-04-07 21:11:00 +00:00
parent 274d8d4eba
commit e578252c27
1 changed files with 12 additions and 1 deletions
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13
tools/gold/gold-plugin.cpp
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@ -50,6 +50,7 @@ namespace {
ld_plugin_add_input_file add_input_file = NULL; ld_plugin_add_input_file add_input_file = NULL;
ld_plugin_add_input_library add_input_library = NULL; ld_plugin_add_input_library add_input_library = NULL;
ld_plugin_set_extra_library_path set_extra_library_path = NULL; ld_plugin_set_extra_library_path set_extra_library_path = NULL;
ld_plugin_get_view get_view = NULL;
ld_plugin_message message = discard_message; ld_plugin_message message = discard_message;
int api_version = 0; int api_version = 0;
@ -205,6 +206,9 @@ ld_plugin_status onload(ld_plugin_tv *tv) {
case LDPT_SET_EXTRA_LIBRARY_PATH: case LDPT_SET_EXTRA_LIBRARY_PATH:
set_extra_library_path = tv->tv_u.tv_set_extra_library_path; set_extra_library_path = tv->tv_u.tv_set_extra_library_path;
break; break;
case LDPT_GET_VIEW:
get_view = tv->tv_u.tv_get_view;
break;
case LDPT_MESSAGE: case LDPT_MESSAGE:
message = tv->tv_u.tv_message; message = tv->tv_u.tv_message;
break; break;
@ -232,7 +236,14 @@ static ld_plugin_status claim_file_hook(const ld_plugin_input_file *file,
int *claimed) { int *claimed) {
lto_module_t M; lto_module_t M;
if (file->offset) { if (get_view) {
const void *view;
if (get_view(file->handle, &view) != LDPS_OK) {
(*message)(LDPL_ERROR, "Failed to get a view of %s", file->name);
return LDPS_ERR;
}
M = lto_module_create_from_memory(view, file->filesize);
} else if (file->offset) {
// Gold has found what might be IR part-way inside of a file, such as // Gold has found what might be IR part-way inside of a file, such as
// an .a archive. // an .a archive.
M = lto_module_create_from_fd_at_offset(file->fd, file->name, -1, M = lto_module_create_from_fd_at_offset(file->fd, file->name, -1,