12fee4b59a
Uses the QEMU virt machine for 68k defined in qemu 6.0+. Basic support that boots, prints to the console, takes input from console, and context switches. TODO: interrupt support, timer support.
77 lines
1.6 KiB
Plaintext
77 lines
1.6 KiB
Plaintext
OUTPUT_FORMAT("elf32-m68k", "elf32-m68k", "elf32-m68k")
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/*
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* LK linker script for single segment binaries.
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*/
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PHDRS
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{
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code PT_LOAD FLAGS(5); /* PF_R|PF_X */
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rodata PT_LOAD FLAGS(4); /* PF_R */
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data PT_LOAD FLAGS(6); /* PF_R|PF_W */
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}
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ENTRY(_start)
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SECTIONS
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{
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. = %KERNEL_BASE% + %KERNEL_LOAD_OFFSET%;
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_start = .;
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/* text/read-only data */
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/* set the load address to physical MEMBASE */
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.text : AT(%MEMBASE% + %KERNEL_LOAD_OFFSET%) {
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KEEP(*(.text.boot))
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*(.text .text*)
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*(.gnu.linkonce.t.*)
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} :code
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. = ALIGN(CONSTANT(MAXPAGESIZE));
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.rodata : {
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__rodata_start = .;
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*(.rodata .rodata.* .gnu.linkonce.r.*)
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} :rodata
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/* trick to force any extra sections to be emitted here */
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. = .;
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. = ALIGN(CONSTANT(MAXPAGESIZE));
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.data : {
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__data_start = .;
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*(.data .data.* .gnu.linkonce.d.*)
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__ctor_list = .;
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KEEP(*(.ctors .init_array))
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__ctor_end = .;
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__dtor_list = .;
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KEEP(*(.dtors .fini_array))
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__dtor_end = .;
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*(.got*)
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*(.dynamic)
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} :data
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. = ALIGN(32 / 8);
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__data_end = .;
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__bss_start = .;
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/* uninitialized data (in same segment as writable data) */
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.bss : {
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/* regular bss */
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*(.bss .bss.*)
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*(.gnu.linkonce.b.*)
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}
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. = ALIGN(32 / 8);
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__bss_end = .;
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/* Align the end to ensure anything after the kernel ends up on its own pages */
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. = ALIGN(CONSTANT(MAXPAGESIZE));
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_end = .;
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. = %KERNEL_BASE% + %MEMSIZE%;
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_end_of_ram = .;
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/* Strip unnecessary stuff */
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/DISCARD/ : { *(.comment .note .eh_frame) }
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}
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