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elf: do not re-create special program headers if already created

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This commit is contained in:
Jakub Konka 2024-09-24 10:56:48 +02:00
parent 62c282ba46
commit db3db1150e
1 changed files with 12 additions and 10 deletions
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22
src/link/Elf.zig
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@ -3159,36 +3159,38 @@ pub fn initShStrtab(self: *Elf) !void {
fn initSpecialPhdrs(self: *Elf) !void {
comptime assert(max_number_of_special_phdrs == 5);
if (self.interp_section_index != null) {
if (self.interp_section_index != null and self.phdr_interp_index == null) {
self.phdr_interp_index = try self.addPhdr(.{
.type = elf.PT_INTERP,
.flags = elf.PF_R,
.@"align" = 1,
});
}
if (self.dynamic_section_index != null) {
if (self.dynamic_section_index != null and self.phdr_dynamic_index == null) {
self.phdr_dynamic_index = try self.addPhdr(.{
.type = elf.PT_DYNAMIC,
.flags = elf.PF_R | elf.PF_W,
});
}
if (self.eh_frame_hdr_section_index != null) {
if (self.eh_frame_hdr_section_index != null and self.phdr_gnu_eh_frame_index == null) {
self.phdr_gnu_eh_frame_index = try self.addPhdr(.{
.type = elf.PT_GNU_EH_FRAME,
.flags = elf.PF_R,
});
}
self.phdr_gnu_stack_index = try self.addPhdr(.{
.type = elf.PT_GNU_STACK,
.flags = elf.PF_W | elf.PF_R,
.memsz = self.base.stack_size,
.@"align" = 1,
});
if (self.phdr_gnu_stack_index == null) {
self.phdr_gnu_stack_index = try self.addPhdr(.{
.type = elf.PT_GNU_STACK,
.flags = elf.PF_W | elf.PF_R,
.memsz = self.base.stack_size,
.@"align" = 1,
});
}
const has_tls = for (self.sections.items(.shdr)) |shdr| {
if (shdr.sh_flags & elf.SHF_TLS != 0) break true;
} else false;
if (has_tls) {
if (has_tls and self.phdr_tls_index == null) {
self.phdr_tls_index = try self.addPhdr(.{
.type = elf.PT_TLS,
.flags = elf.PF_R,