From 35d1a6ef41fa716503925226837cf0f0b8894a90 Mon Sep 17 00:00:00 2001 From: Tianhao Wang Date: Thu, 18 Apr 2024 03:03:27 +0200 Subject: linker: "optimize" section arrangements 1. throw vectors in a custom ".reserved" section 2. throw idt in a NOLOAD ".reserved_0" section: save some binary size (like .bss) since we don't care for its initial value. 3. squash all ".data.*" sections from rust into ".data" --- defs/x86_64-linker.ld | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) (limited to 'defs') diff --git a/defs/x86_64-linker.ld b/defs/x86_64-linker.ld index aee69aa..3d54187 100644 --- a/defs/x86_64-linker.ld +++ b/defs/x86_64-linker.ld @@ -12,12 +12,26 @@ SECTIONS .data : { - *(".data.idt") - *(".data.vectors") *(".data") + *(".data.*") *(".data$") } + .reserved : { + *(".reserved") + *(".reserved.*") + } + + /* + * basically the same as BSS, but I want some flexibility and I don't care + * for zeroing because it's explicitly overwritten anyways. I KNOW WHAT I'M + * DOING! An example is the idt. + */ + .reserved_0 (NOLOAD) : { + *(".reserved_0") + *(".reserved_0.*") + } + .rodata : { *(".rodata") -- cgit v1.2.3-70-g09d2