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Kernel: Make .rodata read-only and add -orphan-handling=error 

I don't really know why .rodata was marked writable :D
This commit is contained in:
Bananymous 2024-08-30 15:33:02 +03:00
parent 8da2f12ba6
commit 827eec6af0
3 changed files with 11 additions and 11 deletions
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2
kernel/CMakeLists.txt
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@ -211,7 +211,7 @@ elseif("${BANAN_ARCH}" STREQUAL "i686")
target_link_options(kernel PRIVATE LINKER:-T,${CMAKE_CURRENT_SOURCE_DIR}/arch/i686/linker.ld) target_link_options(kernel PRIVATE LINKER:-T,${CMAKE_CURRENT_SOURCE_DIR}/arch/i686/linker.ld)
endif() endif()
target_link_options(kernel PRIVATE -ffreestanding -nostdlib) target_link_options(kernel PRIVATE -ffreestanding -nostdlib -orphan-handling=error)
execute_process(COMMAND ${CMAKE_CXX_COMPILER} -print-file-name=crtbegin.o OUTPUT_VARIABLE CRTBEGIN OUTPUT_STRIP_TRAILING_WHITESPACE) execute_process(COMMAND ${CMAKE_CXX_COMPILER} -print-file-name=crtbegin.o OUTPUT_VARIABLE CRTBEGIN OUTPUT_STRIP_TRAILING_WHITESPACE)
execute_process(COMMAND ${CMAKE_CXX_COMPILER} -print-file-name=crtend.o OUTPUT_VARIABLE CRTEND OUTPUT_STRIP_TRAILING_WHITESPACE) execute_process(COMMAND ${CMAKE_CXX_COMPILER} -print-file-name=crtend.o OUTPUT_VARIABLE CRTEND OUTPUT_STRIP_TRAILING_WHITESPACE)

10
kernel/arch/i686/linker.ld
View File

@ -21,20 +21,20 @@ SECTIONS
g_userspace_end = .; g_userspace_end = .;
g_kernel_execute_end = .; g_kernel_execute_end = .;
} }
.ap_init ALIGN(4K) : AT(ADDR(.ap_init)) .ap_init ALIGN(4K) : AT(ADDR(.ap_init) - KERNEL_OFFSET)
{ {
g_ap_init_addr = .; g_ap_init_addr = .;
*(.ap_init) *(.ap_init)
} }
.rodata ALIGN(4K) : AT(ADDR(.rodata) - KERNEL_OFFSET)
{
*(.rodata.*)
}
.data ALIGN(4K) : AT(ADDR(.data) - KERNEL_OFFSET) .data ALIGN(4K) : AT(ADDR(.data) - KERNEL_OFFSET)
{ {
g_kernel_writable_start = .; g_kernel_writable_start = .;
*(.data) *(.data)
} }
.rodata ALIGN(4K) : AT(ADDR(.rodata) - KERNEL_OFFSET)
{
*(.rodata.*)
}
.bss ALIGN(4K) : AT(ADDR(.bss) - KERNEL_OFFSET) .bss ALIGN(4K) : AT(ADDR(.bss) - KERNEL_OFFSET)
{ {
*(COMMON) *(COMMON)

10
kernel/arch/x86_64/linker.ld
View File

@ -21,20 +21,20 @@ SECTIONS
g_userspace_end = .; g_userspace_end = .;
g_kernel_execute_end = .; g_kernel_execute_end = .;
} }
.ap_init ALIGN(4K) : AT(ADDR(.ap_init)) .ap_init ALIGN(4K) : AT(ADDR(.ap_init) - KERNEL_OFFSET)
{ {
g_ap_init_addr = .; g_ap_init_addr = .;
*(.ap_init) *(.ap_init)
} }
.rodata ALIGN(4K) : AT(ADDR(.rodata) - KERNEL_OFFSET)
{
*(.rodata.*)
}
.data ALIGN(4K) : AT(ADDR(.data) - KERNEL_OFFSET) .data ALIGN(4K) : AT(ADDR(.data) - KERNEL_OFFSET)
{ {
g_kernel_writable_start = .; g_kernel_writable_start = .;
*(.data) *(.data)
} }
.rodata ALIGN(4K) : AT(ADDR(.rodata) - KERNEL_OFFSET)
{
*(.rodata.*)
}
.bss ALIGN(4K) : AT(ADDR(.bss) - KERNEL_OFFSET) .bss ALIGN(4K) : AT(ADDR(.bss) - KERNEL_OFFSET)
{ {
*(COMMON) *(COMMON)