46 lines
1.1 KiB
Plaintext
46 lines
1.1 KiB
Plaintext
/* /sbin/init link layout.
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*
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* Linked at a fixed user-space virtual base (set by `image_base` in build.zig,
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* inside the kernel's user region). Same discipline as the kernel's script:
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* one PT_LOAD per permission set, every section page-aligned, so the kernel's
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* user-ELF loader can map each segment with exact W^X permissions. Note the
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* linker also emits a read-only PT_LOAD covering the ELF headers at the image
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* base, so the entry point comes from e_entry, not the base address.
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*/
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ENTRY(_start)
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/* FLAGS bits: 1=X, 2=W, 4=R. */
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PHDRS {
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text PT_LOAD FLAGS(5); /* R + X */
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rodata PT_LOAD FLAGS(4); /* R */
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data PT_LOAD FLAGS(6); /* R + W */
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}
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SECTIONS {
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.text ALIGN(4K) : {
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*(.text .text.*)
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} :text
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.rodata ALIGN(4K) : {
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*(.rodata .rodata.*)
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} :rodata
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.data ALIGN(4K) : {
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*(.data .data.*)
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} :data
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/* .bss occupies memory but not file space; the loader zeroes the
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* filesz..memsz gap. */
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.bss ALIGN(4K) : {
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*(.bss .bss.*)
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*(COMMON)
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} :data
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/DISCARD/ : {
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*(.comment)
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*(.note .note.*)
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*(.eh_frame .eh_frame_hdr)
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}
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}
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