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Add support for linking as pie

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This commit is contained in:
0dminnimda
2024-11-04 02:17:21 +03:00
parent 5f99d6b427
commit 35f1b0f11e
3 changed files with 51 additions and 3 deletions
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src/build_settings.cpp
+8 -1
View File
@@ -257,6 +257,12 @@ enum RelocMode : u8 {
RelocMode_DynamicNoPIC,
};
enum LinkPIE : u8 {
LinkPIE_Default,
LinkPIE_No,
LinkPIE_Yes,
};
enum BuildPath : u8 {
BuildPath_Main_Package, // Input Path to the package directory (or file) we're building.
BuildPath_RC, // Input Path for .rc file, can be set with `-resource:`.
@@ -453,7 +459,7 @@ struct BuildContext {
bool no_threaded_checker;
bool show_debug_messages;
bool copy_file_contents;
bool no_rtti;
@@ -467,6 +473,7 @@ struct BuildContext {
bool print_linker_flags;
RelocMode reloc_mode;
LinkPIE link_pie;
bool disable_red_zone;
isize max_error_count;
src/linker.cpp
+22 -2
View File
@@ -605,9 +605,29 @@ gb_internal i32 linker_stage(LinkerData *gen) {
link_settings = gb_string_appendc(link_settings, "-Wl,-fini,'_odin_exit_point' ");
}
} else if (build_context.metrics.os != TargetOs_openbsd && build_context.metrics.os != TargetOs_haiku && build_context.metrics.arch != TargetArch_riscv64) {
// OpenBSD and Haiku default to PIE executable. do not pass -no-pie for it.
}
switch (build_context.link_pie) {
case (LinkPIE_Default):
if (build_context.build_mode != BuildMode_DynamicLibrary) {
if (build_context.metrics.os != TargetOs_openbsd
&& build_context.metrics.os != TargetOs_haiku
&& build_context.metrics.arch != TargetArch_riscv64
) {
// OpenBSD and Haiku default to PIE executable. do not pass -no-pie for it.
link_settings = gb_string_appendc(link_settings, "-no-pie ");
}
}
break;
case (LinkPIE_Yes):
if (build_context.build_mode != BuildMode_Executable) {
compiler_error("linking NON-EXECUTABLE as pie (position independent EXECUTABLE)");
}
link_settings = gb_string_appendc(link_settings, "-pie ");
break;
case (LinkPIE_No):
link_settings = gb_string_appendc(link_settings, "-no-pie ");
break;
}
gbString platform_lib_str = gb_string_make(heap_allocator(), "");
src/main.cpp
+21
View File
@@ -360,6 +360,7 @@ enum BuildFlagKind {
BuildFlag_NoThreadLocal,
BuildFlag_RelocMode,
BuildFlag_LinkPIE,
BuildFlag_DisableRedZone,
BuildFlag_DisallowDo,
@@ -570,6 +571,7 @@ gb_internal bool parse_build_flags(Array<String> args) {
add_flag(&build_flags, BuildFlag_MinimumOSVersion, str_lit("minimum-os-version"), BuildFlagParam_String, Command__does_build);
add_flag(&build_flags, BuildFlag_RelocMode, str_lit("reloc-mode"), BuildFlagParam_String, Command__does_build);
add_flag(&build_flags, BuildFlag_LinkPIE, str_lit("link-pie"), BuildFlagParam_String, Command__does_build);
add_flag(&build_flags, BuildFlag_DisableRedZone, str_lit("disable-red-zone"), BuildFlagParam_None, Command__does_build);
add_flag(&build_flags, BuildFlag_DisallowDo, str_lit("disallow-do"), BuildFlagParam_None, Command__does_check);
@@ -1332,6 +1334,25 @@ gb_internal bool parse_build_flags(Array<String> args) {
break;
}
case BuildFlag_LinkPIE: {
GB_ASSERT(value.kind == ExactValue_String);
String v = value.value_string;
if (v == "default") {
build_context.link_pie = LinkPIE_Default;
} else if (v == "yes" || v == "true") {
build_context.link_pie = LinkPIE_Yes;
} else if (v == "no" || v == "false") {
build_context.link_pie = LinkPIE_No;
} else {
gb_printf_err("-link-pie flag expected one of the following\n");
gb_printf_err("\tdefault\n");
gb_printf_err("\tyes, true\n");
gb_printf_err("\tno, false\n");
bad_flags = true;
}
break;
}
case BuildFlag_DisableRedZone:
build_context.disable_red_zone = true;
break;