Atmosphere/thermosphere/linker.ld
TuxSH 626f0ecb98 thermosphere: major refactor of memory map
- use recursive stage 1 page table (thanks @fincs for this idea)
- NULL now unmapped
- no identity mapping
- image + GICv2 now mapped at the same address for every platform
- tempbss mapped just after "real" bss, can now steal unused mem from
the latter
- no hardcoded VAs for other MMIO devices
- tegra: remove timers, use the generic timer instead
2021-02-19 21:51:48 +00:00

210 lines
6.3 KiB
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OUTPUT_ARCH(aarch64)
ENTRY(_start)
PHDRS
{
main PT_LOAD;
}
MEMORY
{
mainVa : ORIGIN = 0x7FFFE10000, LENGTH = 2M - 64K
}
SECTIONS
{
__start_pa__ = ABSOLUTE(ORIGIN(main));
__temp_pa__ = ABSOLUTE(ORIGIN(temp));
__max_image_size__ = ABSOLUTE(LENGTH(main));
__max_temp_size__ = ABSOLUTE(LENGTH(temp) - 0x1000);
.text :
{
. = ALIGN(8);
__start__ = ABSOLUTE(.);
KEEP(*(.crt0*));
*(.text.unlikely .text.*_unlikely .text.unlikely.*)
*(.text.exit .text.exit.*)
*(.text.startup .text.startup.*)
*(.text.hot .text.hot.*)
*(.text .stub .text.* .gnu.linkonce.t.*)
. = ALIGN(0x800);
__vectors_start__ = ABSOLUTE(.);
KEEP(*(.vectors*));
__vectors_end__ = ABSOLUTE(.);
ASSERT(__vectors_end__ - __vectors_start__ <= 0x800, "Exception vectors section should be max 0x800 in size!");
. = ALIGN(8);
} >mainVa AT>main :main
.init :
{
KEEP( *(.init) )
. = ALIGN(8);
} >mainVa AT>main :main
.plt :
{
*(.plt)
*(.iplt)
. = ALIGN(8);
} >mainVa AT>main :main
.fini :
{
KEEP( *(.fini) )
. = ALIGN(8);
} >mainVa AT>main :main
.rodata :
{
*(.rodata .rodata.* .gnu.linkonce.r.*)
SORT(CONSTRUCTORS)
. = ALIGN(8);
} >mainVa AT>main :main
.got : { __got_start__ = ABSOLUTE(.); *(.got) *(.igot) } >mainVa AT>main :main
.got.plt : { *(.got.plt) *(.igot.plt) __got_end__ = ABSOLUTE(.);} >mainVa AT>main :main
.preinit_array :
{
. = ALIGN(8);
PROVIDE (__preinit_array_start = ABSOLUTE(.));
KEEP (*(.preinit_array))
PROVIDE (__preinit_array_end = ABSOLUTE(.));
ASSERT(__preinit_array_end == __preinit_array_start, ".preinit_array not empty!");
. = ALIGN(8);
} >mainVa AT>main :main
.init_array :
{
PROVIDE (__init_array_start = ABSOLUTE(.));
KEEP (*(SORT(.init_array.*)))
KEEP (*(.init_array))
PROVIDE (__init_array_end = ABSOLUTE(.));
ASSERT(__init_array_end == __init_array_start, ".init_array not empty!");
} >mainVa AT>main :main
.fini_array :
{
. = ALIGN(8);
PROVIDE (__fini_array_start = ABSOLUTE(.));
KEEP (*(.fini_array))
KEEP (*(SORT(.fini_array.*)))
PROVIDE (__fini_array_end = ABSOLUTE(.));
. = ALIGN(8);
ASSERT(__fini_array_end == __fini_array_start, ".fini_array not empty!");
} >mainVa AT>main :main
.ctors :
{
. = ALIGN(8);
KEEP (*crtbegin.o(.ctors)) /* MUST be first -- GCC requires it */
KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
KEEP (*(SORT(.ctors.*)))
KEEP (*(.ctors))
. = ALIGN(8);
} >mainVa AT>main :main
.dtors ALIGN(8) :
{
. = ALIGN(8);
KEEP (*crtbegin.o(.dtors))
KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
KEEP (*(SORT(.dtors.*)))
KEEP (*(.dtors))
. = ALIGN(8);
} >mainVa AT>main :main
.data ALIGN(8) :
{
*(.data .data.* .gnu.linkonce.d.*)
CONSTRUCTORS
. = ALIGN(8);
} >mainVa AT>main :main
.eh_frame_hdr : { *(.eh_frame_hdr) *(.eh_frame_entry .eh_frame_entry.*) } >mainVa AT>main :main
.eh_frame : { KEEP (*(.eh_frame)) *(.eh_frame.*) } >mainVa AT>main :main
.gcc_except_table : { *(.gcc_except_table .gcc_except_table.*) } >mainVa AT>main :main
.gnu_extab : { *(.gnu_extab*) } >mainVa AT>main :main
.exception_ranges : { *(.exception_ranges .exception_ranges*) } >mainVa AT>main :main
.dynamic : { *(.dynamic) } >mainVa AT>main :main
.interp : { *(.interp) } >mainVa AT>main :main
.note.gnu.build-id : { *(.note.gnu.build-id) } >mainVa AT>main :main
.hash : { *(.hash) } >mainVa AT>main :main
.gnu.hash : { *(.gnu.hash) } >mainVa AT>main :main
.gnu.version : { *(.gnu.version) } >mainVa AT>main :main
.gnu.version_d : { *(.gnu.version_d) } >mainVa AT>main :main
.gnu.version_r : { *(.gnu.version_r) } >mainVa AT>main :main
.dynsym : { *(.dynsym) } >mainVa AT>main :main
.dynstr : { *(.dynstr) } >mainVa AT>main :main
.rela.dyn : { *(.rela.*); __main_end__ = ABSOLUTE(.);} >mainVa AT>main :main
.bss (NOLOAD) :
{
. = ALIGN(0x1000);
__bss_start__ = ABSOLUTE(.);
*(.dynbss)
*(.bss .bss.* .gnu.linkonce.b.*)
*(COMMON)
. = ALIGN(8);
__real_bss_end__ = ABSOLUTE(.);
__image_size__ = ABSOLUTE(__real_bss_end__ - __start__);
ASSERT(__image_size__ <= __max_image_size__, "Image too big!");
/*
The logic here: tempbss *additional pages* are at a very different PA, but
we can allow .tempbss to use unused "non-temporary" BSS space. Their VAs are
contiguous.
*/
*(.tempbss .tempbss.*)
__bss_end__ = ABSOLUTE(.);
__temp_size__ = ABSOLUTE(__bss_end__ - __real_bss_end__);
} >mainVa :NONE
. = ALIGN(8);
/* ==================
==== Metadata ====
================== */
/* Discard sections that difficult post-processing */
/DISCARD/ : { *(.group .comment .note) }
/* Stabs debugging sections. */
.stab 0 : { *(.stab) }
.stabstr 0 : { *(.stabstr) }
.stab.excl 0 : { *(.stab.excl) }
.stab.exclstr 0 : { *(.stab.exclstr) }
.stab.index 0 : { *(.stab.index) }
.stab.indexstr 0 : { *(.stab.indexstr) }
/* DWARF debug sections.
Symbols in the DWARF debugging sections are relative to the beginning
of the section so we begin them at 0. */
/* DWARF 1 */
.debug 0 : { *(.debug) }
.line 0 : { *(.line) }
/* GNU DWARF 1 extensions */
.debug_srcinfo 0 : { *(.debug_srcinfo) }
.debug_sfnames 0 : { *(.debug_sfnames) }
/* DWARF 1.1 and DWARF 2 */
.debug_aranges 0 : { *(.debug_aranges) }
.debug_pubnames 0 : { *(.debug_pubnames) }
/* DWARF 2 */
.debug_info 0 : { *(.debug_info) }
.debug_abbrev 0 : { *(.debug_abbrev) }
.debug_line 0 : { *(.debug_line) }
.debug_frame 0 : { *(.debug_frame) }
.debug_str 0 : { *(.debug_str) }
.debug_loc 0 : { *(.debug_loc) }
.debug_macinfo 0 : { *(.debug_macinfo) }
}