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fix: memory layout and startup

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This commit is contained in:
Katharina 2026-06-27 09:48:09 +02:00
parent 92d8a91be4
commit 8dc53f662e
7 changed files with 48 additions and 32 deletions
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42
kernel/linker.ld
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@ -1,6 +1,8 @@
ENTRY(__start)
high_base = 0xFFFF800000000000;
MEMORY
{
MULTIBOOT_HEADER_PV : ORIGIN = 16k, LENGTH = 4k
@ -9,7 +11,7 @@ MEMORY
KERNEL_MEMORY_P : ORIGIN = 64k, LENGTH = (1024M - ORIGIN(KERNEL_MEMORY_P))
HIGH_KERNEL_V : ORIGIN = 0xFFFF800000000000 + 64k, LENGTH = LENGTH(KERNEL_MEMORY_P)
HIGH_KERNEL_V : ORIGIN = high_base + ORIGIN(KERNEL_MEMORY_P), LENGTH = LENGTH(KERNEL_MEMORY_P)
}
SECTIONS
@ -29,31 +31,31 @@ SECTIONS
KEEP(*(.startup_data))
__startup_data_end__ = .;
} > START_MEMORY_PV
.text : {
.text : AT(ADDR(.text) - high_base) {
__text_start__ = .;
*(EXCLUDE_FILE(*trampoline*) .text)
__text_end__ = .;
} > HIGH_KERNEL_V AT > KERNEL_MEMORY_P
.rodata : {
} > HIGH_KERNEL_V
.rodata : AT(ADDR(.rodata) - high_base) {
__rodata_start__ = .;
*(EXCLUDE_FILE(*trampoline*) .rodata)
__rodata_end__ = .;
} > HIGH_KERNEL_V AT > KERNEL_MEMORY_P
.data : {
} > HIGH_KERNEL_V
.data : AT(ADDR(.data) - high_base) {
__data_start__ = .;
*(EXCLUDE_FILE(*trampoline*) .data)
__data_end__ = .;
} > HIGH_KERNEL_V AT > KERNEL_MEMORY_P
.bss : {
__bss_start__ = .;
*(EXCLUDE_FILE(*trampoline*) .bss)
__bss_end__ = .;
} > HIGH_KERNEL_V AT > KERNEL_MEMORY_P
.reserved_ranges : {
} > HIGH_KERNEL_V
.reserved_ranges : AT(ADDR(.reserved_ranges) - high_base) {
__reserved_ranges_start__ = .;
KEEP(*(.reserved_ranges))
__reserved_ranges_end__ = .;
} > HIGH_KERNEL_V AT > KERNEL_MEMORY_P
} > HIGH_KERNEL_V
.bss (NOLOAD) : AT(ADDR(.bss) - high_base) {
__bss_start__ = .;
*(EXCLUDE_FILE(*trampoline*) .bss)
__bss_end__ = .;
} > HIGH_KERNEL_V
.trampoline_text : {
__trampoline_text_start__ = .;
@ -67,18 +69,18 @@ SECTIONS
__trampoline_data_end__ = .;
} > TRAMPOLINE_PV
.trampoline_bss : {
__trampoline_bss_start__ = .;
*trampoline*(.bss)
__trampoline_bss_end__ = .;
} > TRAMPOLINE_PV
.trampoline_rodata : {
__trampoline_rodata_start__ = .;
*trampoline*(.rodata)
__trampoline_rodata_end__ = .;
} > TRAMPOLINE_PV
.trampoline_bss (NOLOAD) : {
__trampoline_bss_start__ = .;
*trampoline*(.bss)
__trampoline_bss_end__ = .;
} > TRAMPOLINE_PV
/DISCARD/ : {
*(.comment)
*(.eh_frame)