7dd036a827
Tools like simavr only handle `.text`. This also makes the output from objdump a little more obvious.
49 lines
1.2 KiB
Plaintext
49 lines
1.2 KiB
Plaintext
/*
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* This script is a work in progress
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*
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* Debugging the output with `avr-objdump -w -s -x -D output.elf` is very useful.
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*/
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/* TODO: Verify memory addresses and lengths */
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MEMORY {
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text (rx) : ORIGIN = 0x000000, LENGTH = 32K
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registers (rw!x) : ORIGIN = 0x800000, LENGTH = 256
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data (rw!x) : ORIGIN = 0x800100, LENGTH = 2K
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}
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SECTIONS {
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.text : {
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/*
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* The interrupt vector routines *must* start at address 0x0000
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*
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* Preserve every symbol in the Interrupt Vector Routines table to
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* prevent them from being garbage collected.
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*/
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KEEP(* (.ivr));
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/* The rest of our code */
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* (.text* .progmem.data*);
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} >text
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/* Data initialized to a value */
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.data : AT(ADDR(.text) + SIZEOF(.text)) {
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__data_start = .;
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* (.data* .rodata*);
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__data_end = .;
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} >data
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/* Data not initialized to a value */
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/* Even possible in Rust? */
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/* Yes: zero-initialized */
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.bss : AT(ADDR(.data) + SIZEOF(.data)) {
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__bss_start = .;
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/* Can we avoid actually copying this in? */
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* (.bss*);
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__bss_end = .;
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} >data
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/* Set up variables for initialization routines */
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__data_load_start = LOADADDR(.data);
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__data_load_end = __data_load_start + SIZEOF(.data);
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}
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