27 lines
796 B
ArmAsm
27 lines
796 B
ArmAsm
// The kernel layout is:
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//
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// text
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// rodata
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// data
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// bss
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//
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// Conventionally, Unix linkers provide pseudo-symbols
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// etext, edata, and end, at the end of the text, data, and bss.
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// For the kernel mapping, we need the address at the beginning
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// of the data section, but that's not one of the conventional
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// symbols, because the convention started before there was a
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// read-only rodata section between text and data.
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//
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// To get the address of the data section, we define a symbol
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// named data and make sure this is the first object passed to
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// the linker, so that it will be the first symbol in the data section.
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//
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// Alternative approaches would be to parse our own ELF header
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// or to write a linker script, but this is simplest.
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.data
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.globl data
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data:
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.word 1
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