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Fix symbols for RAM section locations

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Using the ld functions is not only more readable, but more accurate.
Previous use of the `.` variable could occasionally have off-by-one
errors.
This commit is contained in:
jmaargh 2023-10-16 22:46:27 +01:00
parent 9040844854
commit 7a1f554b72
1 changed files with 6 additions and 18 deletions
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24
agb/gba.ld
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@ -36,33 +36,27 @@ SECTIONS {
. = ALIGN(4); . = ALIGN(4);
} > rom } > rom
__iwram_rom_start = .;
.iwram : { .iwram : {
__iwram_data_start = ABSOLUTE(.);
*(.iwram .iwram.*); *(.iwram .iwram.*);
. = ALIGN(4); . = ALIGN(4);
*(.text_iwram .text_iwram.*); *(.text_iwram .text_iwram.*);
. = ALIGN(4); . = ALIGN(4);
__iwram_data_end = ABSOLUTE(.);
} > iwram AT>rom } > iwram AT>rom
__iwram_data_start = ADDR(.iwram);
__iwram_rom_start = LOADADDR(.iwram);
__iwram_rom_length_halfwords = (SIZEOF(.iwram) + 1) / 2;
. = __iwram_rom_start + (__iwram_data_end - __iwram_data_start);
__ewram_rom_start = .;
.ewram : { .ewram : {
__ewram_data_start = ABSOLUTE(.);
*(.ewram .ewram.*); *(.ewram .ewram.*);
. = ALIGN(4); . = ALIGN(4);
*(.data .data.*); *(.data .data.*);
. = ALIGN(4); . = ALIGN(4);
__ewram_data_end = ABSOLUTE(.);
} > ewram AT>rom } > ewram AT>rom
__ewram_data_start = ADDR(.ewram);
__ewram_rom_start = LOADADDR(.ewram);
__ewram_rom_length_halfwords = (SIZEOF(.ewram) + 1) / 2;
.bss : { .bss : {
*(.bss .bss.*); *(.bss .bss.*);
@ -70,12 +64,6 @@ SECTIONS {
__iwram_end = ABSOLUTE(.); __iwram_end = ABSOLUTE(.);
} > iwram } > iwram
__iwram_rom_length_bytes = __iwram_data_end - __iwram_data_start;
__iwram_rom_length_halfwords = (__iwram_rom_length_bytes + 1) / 2;
__ewram_rom_length_bytes = __ewram_data_end - __ewram_data_start;
__ewram_rom_length_halfwords = (__ewram_rom_length_bytes + 1) / 2;
.shstrtab : { .shstrtab : {
*(.shstrtab) *(.shstrtab)
} }