61 lines
1.6 KiB
Plaintext
61 lines
1.6 KiB
Plaintext
SECTIONS
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{
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/*
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We could also pass the -Ttext 0x7C00 to as instead of doing this.
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If your program does not have any memory accesses, you can omit this.
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*/
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. = 0x7c00;
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.text :
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{
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/*
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We are going to stuff everything
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into a text segment for now, including data.
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Who cares? Other segments only exist to appease C compilers.
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*/
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*(.text)
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/*
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Magic bytes. 0x1FE == 510.
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We could add this on each Gas file separately with `.word`,
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but this is the perfect place to DRY that out.
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*/
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. = 0x1FE;
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SHORT(0xAA55)
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/*
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This is only needed if we are going to use a 2 stage boot process,
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e.g. by reading more disk than the default 512 bytes with BIOS `int 0x13`.
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*/
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*(.stage2)
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/*
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TODO get this working.
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Number of sectors in stage 2. Used by the `int 13`.
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The value gets put into memory as the very last thing
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in the `.stage` section if it exists.
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We must put it *before* the final `. = ALIGN(512)`,
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or else it would fall out of the loaded memory.
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*/
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__stage2_size = .;
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/*BYTE((ALIGN(.) / 512) - 1);*/
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/* Ensure that the generated image is a multiple of 512 bytes long. */
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. = ALIGN(512);
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__end = .;
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__end_align_4k = ALIGN(4k);
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}
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}
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/*
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The linux kernel 4.2 uses linker scripts like:
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- https://github.com/torvalds/linux/blob/v4.2/arch/x86/boot/setup.ld
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The kernel also uses the `.lds` extension for its scripts.
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*/
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