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fix: 🐛 Fix 2/2 for objcopy unaligned sections bug 

This one restores rust-objcopy but explicitly aligns
the beginning of each section. This avoids incorrect
binary output (.rodata section was offset 10-12 bytes
because of unaligned section start).
This commit is contained in:
Berkus Decker 2023-07-26 02:59:30 +03:00 committed by Berkus Decker
parent d2ed7c21ac
commit ce3b94e86e
2 changed files with 10 additions and 4 deletions
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5
Makefile.toml
View File

@ -50,7 +50,10 @@ PLATFORM_TARGET="--target=${TARGET_JSON} --features=${TARGET_FEATURES}"
DEVICE_FEATURES = "noserial"
QEMU_FEATURES = "qemu,rpi3"
OBJCOPY = "/opt/homebrew/Cellar/aarch64-elf-binutils/2.40/bin/aarch64-elf-objcopy" # Part of `cargo objcopy` in cargo-binutils
# Working objcopy from `brew install aarch64-elf-binutils`
#OBJCOPY = "/opt/homebrew/Cellar/aarch64-elf-binutils/2.40/bin/aarch64-elf-objcopy" # Part of `cargo objcopy` in cargo-binutils
# LLVM's objcopy, usually full of bugs like https://github.com/llvm/llvm-project/issues/58407
OBJCOPY = "rust-objcopy" # Part of `cargo objcopy` in cargo-binutils
OBJCOPY_PARAMS = "--strip-all -O binary"
NM = "rust-nm" # Part of `cargo nm` in cargo-binutils

9
linker/aarch64.ld
View File

@ -59,14 +59,16 @@ SECTIONS
*(.text*)
} :segment_code
.vectors ALIGN(2048):
.vectors :
{
. = ALIGN(2048);
__EXCEPTION_VECTORS_START = .;
KEEP(*(.vectors))
} :segment_code
.rodata ALIGN(4):
.rodata :
{
. = ALIGN(4);
*(.rodata*)
FILL(0x00)
. = ALIGN(PAGE_SIZE); /* Fill up to page size */
@ -84,8 +86,9 @@ SECTIONS
FILL(0x00)
} :segment_data
.bss ALIGN(PAGE_SIZE) (NOLOAD):
.bss (NOLOAD):
{
. = ALIGN(PAGE_SIZE);
__BSS_START = .;
*(.bss*)
. = ALIGN(PAGE_SIZE); /* Align up to page size */