W3SLAV/automicropython_nds
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a9686e1e79
automicropython_nds/nds/nds_9.ld
W3SLAV a9686e1e79
Update nds_9.ld (again)
2025-05-22 20:36:37 -05:00

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/*--------------------------------------------------------------------------------
Zope Public License (ZPL) Version 2.1
A copyright notice accompanies this license document that identifies
the copyright holders.
This license has been certified as open source. It has also been
designated as GPL compatible by the Free Software Foundation (FSF).
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
1. Redistributions in source code must retain the accompanying
copyright notice, this list of conditions, and the following
disclaimer.
2. Redistributions in binary form must reproduce the accompanying
copyright notice, this list of conditions, and the following
disclaimer in the documentation and/or other materials provided
with the distribution.
3. Names of the copyright holders must not be used to endorse or
promote products derived from this software without prior written
permission from the copyright holders.
4. The right to distribute this software or to use it for any purpose
does not give you the right to use Servicemarks (sm) or Trademarks
(tm) of the copyright holders. Use of them is covered by separate
agreement with the copyright holders.
5. If any files are modified, you must cause the modified files to
carry prominent notices stating that you changed the files and the
date of any change.
Disclaimer
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
--------------------------------------------------------------------------------*/
/* File last updated 5/22/25 */
/*--------------------------------------------------------------------------------
** Linker script for DS/DSi homebrew, ARM9 side **
--------------------------------------------------------------------------------*/
OUTPUT_ARCH(arm)
ENTRY(__ds9_bootstub)
MEMORY {
/* Physical binaries loaded from ROM (LMAs) */
lma9 : ORIGIN = 0x2004000, LENGTH = 0x27c000
lma9i : ORIGIN = 0x2400000, LENGTH = 0x280000
/* Runtime memory layout for code/data areas (VMAs) */
vectors : ORIGIN = 0x0000000, LENGTH = 0x20 /* Vectors */
itcm : ORIGIN = 0x1ff8020, LENGTH = 0x7fe0 /* ITCM (minus vectors) */
main : ORIGIN = 0x2001000, LENGTH = 0xf7f000 /* Main RAM (usable area for ARM9) */
dtcm : ORIGIN = 0x2ff0000, LENGTH = 0x3e80 /* DTCM (minus stacks/reserved BIOS memory) */
dldi : ORIGIN = 0x380b000, LENGTH = 0x4000 /* DLDI (on ARM7 WRAM) */
stub : ORIGIN = 0xe000000, LENGTH = 0x4000 /* Fake bootstub memory */
/* Special TLS address space */
tls : ORIGIN = 0, LENGTH = 1K
}
PHDRS {
/* ELF program headers for the ARM9 binary */
stub PT_LOAD FLAGS(7);
crt0 PT_LOAD FLAGS(7);
dldi PT_LOAD FLAGS(7);
vectors PT_LOAD FLAGS(7);
itcm PT_LOAD FLAGS(7);
dtcm PT_LOAD FLAGS(7);
main PT_LOAD FLAGS(7);
tls PT_LOAD FLAGS(7);
bss PT_LOAD FLAGS(7);
ldlist PT_LOAD FLAGS(7);
/* ELF program headers for the ARM9i binary */
twl PT_LOAD FLAGS(0x100007);
twlld PT_LOAD FLAGS(0x100007);
}
/* Default initial stack locations and BIOS variables */
PROVIDE_HIDDEN( __sp_usr = ORIGIN(dtcm) + LENGTH(dtcm) );
PROVIDE_HIDDEN( __sp_irq = __sp_usr + 0x100 );
PROVIDE_HIDDEN( __sp_svc = __sp_irq + 0x40 );
PROVIDE_HIDDEN( __irq_flags = __sp_svc + 0x38 );
PROVIDE_HIDDEN( __irq_vector = __sp_svc + 0x3c );
/* Overridable locations for ARM exception vectors (pointing to ARM9 BIOS by default) */
PROVIDE_HIDDEN( __arm_excpt_rst = 0xffff0000 );
PROVIDE_HIDDEN( __arm_excpt_und = 0xffff0004 );
PROVIDE_HIDDEN( __arm_excpt_svc = 0xffff0008 );
PROVIDE_HIDDEN( __arm_excpt_pabt = 0xffff000c );
PROVIDE_HIDDEN( __arm_excpt_dabt = 0xffff0010 );
PROVIDE_HIDDEN( __arm_excpt_irq = 0xffff0018 );
PROVIDE_HIDDEN( __arm_excpt_fiq = 0xffff001c );
/* Not used */
/*PROVIDE_HIDDEN( __end__ = 0 );*/
SECTIONS {
/* Secure area (2K) */
.secure : {
. += 2K - 4;
LONG(0)
} >stub AT>lma9 :stub = 0
/* Small bootstub that copies crt0 into the scratch boot memory */
.bootstub : {
KEEP( *(.bootstub .bootstub.*) )
. = ALIGN(4);
} >stub AT>lma9 :stub = 0
/* Initialization code section (crt0) */
.crt0 : {
*(.crt0 .crt0.*)
*.crt0.* (.text .stub .text.* .gnu.linkonce.t.*)
*.crt0.* (.glue_7t .glue_7 .vfp11_veneer .v4_bx)
*.crt0.* (.rodata .rodata.* .gnu.linkonce.r.*)
*.crt0.* (.rodata1)
. = ALIGN(32);
} >main AT>lma9 :crt0 = 0xff
/* Load information for crt0 */
PROVIDE_HIDDEN( __crt0_lma = LOADADDR(.crt0) );
PROVIDE_HIDDEN( __crt0_start = ADDR(.crt0) );
PROVIDE_HIDDEN( __crt0_end = ADDR(.crt0) + SIZEOF(.crt0) );
/* Ensure crt0 does not overlap initial bootstrap */
ASSERT( __crt0_end <= LOADADDR(.bootstub) || __crt0_start >= LOADADDR(.bootstub) + SIZEOF(.bootstub),
"Error: crt0 section overlaps initial bootstrap" )
/* DLDI area (copied to ARM7) */
.dldi : {
KEEP( *(.dldi) )
} >dldi AT>lma9 :dldi = 0x00
PROVIDE_HIDDEN( __dldi_lma = SIZEOF(.dldi) ? LOADADDR(.dldi) : 0 );
/* ARM exception vectors (start of ITCM) */
.vectors : {
KEEP( *(.vectors) )
} >vectors AT>lma9 :vectors = 0xff
/* ITCM section */
.itcm : {
*(.itcm .itcm.*)
*.itcm.* (.text .stub .text.* .gnu.linkonce.t.*)
*.32.o (.text .stub .text.* .gnu.linkonce.t.*)
*.itcm.* (.glue_7t .glue_7 .vfp11_veneer .v4_bx)
*.32.o (.glue_7t .glue_7 .vfp11_veneer .v4_bx)
*.itcm.* (.rodata .rodata.* .gnu.linkonce.r.*)
*.32.o (.rodata .rodata.* .gnu.linkonce.r.*)
*.itcm.* (.rodata1)
*.32.o (.rodata1)
. = ALIGN(4);
} >itcm AT>lma9 :itcm = 0xff
/* Load information for ITCM */
PROVIDE_HIDDEN( __itcm_lma = LOADADDR(.vectors) );
PROVIDE_HIDDEN( __itcm_start = ADDR(.itcm) - SIZEOF(.vectors) );
PROVIDE_HIDDEN( __itcm_end = ADDR(.itcm) + SIZEOF(.itcm) );
ASSERT( __itcm_lma + SIZEOF(.vectors) == LOADADDR(.itcm), "Error: gap between vectors and itcm" )
/* DTCM section */
.dtcm : {
*(.dtcm .dtcm.*)
*.32.o (.data .data.* .gnu.linkonce.d.*)
*.32.o (.data1)
. = ALIGN(4);
} >dtcm AT>lma9 :dtcm = 0xff
/* Load information for DTCM */
PROVIDE_HIDDEN( __dtcm_lma = LOADADDR(.dtcm) );
PROVIDE_HIDDEN( __dtcm_start = ADDR(.dtcm) );
PROVIDE_HIDDEN( __dtcm_end = ADDR(.dtcm) + SIZEOF(.dtcm) );
/* DTCM BSS area */
.dtcm.bss . (NOLOAD) : {
*(.sbss .sbss.*)
*.32.o (.dynbss)
*.32.o (.bss .bss.* .gnu.linkonce.b.*)
*.32.o (COMMON)
. = ALIGN(4);
} >dtcm AT>lma9 :dtcm
/* Information for DTCM BSS */
PROVIDE_HIDDEN( __dtcm_bss_start = ADDR(.dtcm.bss) );
PROVIDE_HIDDEN( __dtcm_bss_end = ADDR(.dtcm.bss) + SIZEOF(.dtcm.bss) );
/* ================= */
/* Main RAM area */
/* ================= */
/* Main user code/read-only data section */
.main : {
KEEP( *(SORT_NONE(.init)) )
EXCLUDE_FILE(*.twl.*) *(.text.unlikely .text.*_unlikely .text.unlikely.*)
EXCLUDE_FILE(*.twl.*) *(.text.exit .text.exit.*)
EXCLUDE_FILE(*.twl.*) *(.text.startup .text.startup.*)
EXCLUDE_FILE(*.twl.*) *(.text.hot .text.hot.*)
EXCLUDE_FILE(*.twl.*) *(.text .iplt .stub .text.* .gnu.linkonce.t.*)
EXCLUDE_FILE(*.twl.*) *(.glue_7t .glue_7 .vfp11_veneer .v4_bx)
KEEP( *(SORT_NONE(.fini)) )
EXCLUDE_FILE(*.twl.*) *(.rodata .rodata.* .gnu.linkonce.r.*)
EXCLUDE_FILE(*.twl.*) *(.rodata1)
. = ALIGN(4);
} >main AT>lma9 :main = 0xff
/* Main user data section */
.main.rw : ALIGN_WITH_INPUT {
EXCLUDE_FILE(*.twl.*) *(.data .data.* .gnu.linkonce.d.*)
EXCLUDE_FILE(*.twl.*) *(.data1)
EXCLUDE_FILE(*.twl.*) *(.igot.plt)
SORT(CONSTRUCTORS)
. = ALIGN(4);
} >main AT>lma9 :main = 0xff
/* ARM exception table */
.ARM.extab : ALIGN_WITH_INPUT {
*(.ARM.extab* .gnu.linkonce.armextab.*)
} >main AT>lma9 :main = 0xff
/* ARM exception index table (replaces .eh_frame on AArch32) */
.ARM.exidx : ALIGN_WITH_INPUT {
*(.ARM.exidx* .gnu.linkonce.armexidx.*)
} >main AT>lma9 :main = 0xff
/* Symbols needed by exception unwind code */
PROVIDE_HIDDEN( __exidx_start = ADDR(.ARM.exidx) );
PROVIDE_HIDDEN( __exidx_end = ADDR(.ARM.exidx) + SIZEOF(.ARM.exidx) );
/* Exception frame header (not used on AArch32) */
.eh_frame_hdr : ALIGN_WITH_INPUT {
*(.eh_frame_hdr)
*(.eh_frame_entry .eh_frame_entry.*)
} >main AT>lma9 :main = 0xff
/* Exception frame information (not used on AArch32) */
.eh_frame : ALIGN_WITH_INPUT {
KEEP( *(.eh_frame) )
*(.eh_frame.*)
} >main AT>lma9 :main = 0xff
/* GCC language agnostic exception table (not used on AArch32?) */
.gcc_except_table : ALIGN_WITH_INPUT {
*(.gcc_except_table .gcc_except_table.*)
} >main AT>lma9 :main = 0xff
/* GNU exception table (not used on AArch32?) */
.gnu_extab : ALIGN_WITH_INPUT {
*(.gnu_extab*)
} >main AT>lma9 :main = 0xff
/* TLS metadata */
.tinfo : ALIGN_WITH_INPUT SUBALIGN(4) {
LONG(__tls_start)
LONG(SIZEOF(.main.tls))
LONG(SIZEOF(.tdata))
} >main AT>lma9 :main = 0xff
PROVIDE_HIDDEN( __tls_info = ADDR(.tinfo) );
/* Table of special constructors that run before _init */
.preinit_array : ALIGN_WITH_INPUT {
PROVIDE_HIDDEN( __preinit_array_start = . );
KEEP( *(.preinit_array) )
PROVIDE_HIDDEN( __preinit_array_end = . );
} >main AT>lma9 :main = 0xff
/* Table of global constructors (runs after _init) */
.init_array : ALIGN_WITH_INPUT {
PROVIDE_HIDDEN( __init_array_start = . );
KEEP( *(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*)) )
KEEP( *(.init_array .ctors) )
PROVIDE_HIDDEN( __init_array_end = . );
} >main AT>lma9 :main = 0xff
/* Table of global destructors (runs before _fini) */
.fini_array : ALIGN_WITH_INPUT {
PROVIDE_HIDDEN( __fini_array_start = . );
KEEP( *(SORT_BY_INIT_PRIORITY(.fini_array.*) SORT_BY_INIT_PRIORITY(.dtors.*)) )
KEEP( *(.fini_array .dtors) )
PROVIDE_HIDDEN( __fini_array_end = . );
} >main AT>lma9 :main = 0xff
/* Load information for code/data on main RAM */
PROVIDE_HIDDEN( __main_lma = LOADADDR(.main) );
PROVIDE_HIDDEN( __main_start = ADDR(.main) );
PROVIDE_HIDDEN( __main_end = ADDR(.fini_array) + SIZEOF(.fini_array) );
/* TLS static data area */
.tdata : {
*(.tdata .tdata.* .gnu.linkonce.td.*)
. = ALIGN(4);
} >tls AT>lma9 :tls = 0xff
/* TLS BSS area */
.tbss (NOLOAD) : {
*(.tbss .tbss.* .gnu.linkonce.tb.*)
*(.tcommon)
. = ALIGN(4);
} >tls AT>lma9 :tls
/* TLS sanity checks */
ASSERT( ALIGNOF(.tdata) <= 8 || ALIGNOF(.tbss) <= 8,
"Error: TLS is overaligned (up to 8-byte alignment is supported)" )
ASSERT( ADDR(.tbss) + SIZEOF(.tbss) <= ORIGIN(tls) + LENGTH(tls),
"Error: TLS section too large" )
/* Main thread TLS area */
.main.tls (NOLOAD) : ALIGN(8) {
. += ADDR(.tbss) + SIZEOF(.tbss) - ADDR(.tdata);
} >main :NONE
/* Information for main thread TLS area */
PROVIDE_HIDDEN( __tls_lma = LOADADDR(.tdata) );
PROVIDE_HIDDEN( __tls_start = ADDR(.main.tls) );
PROVIDE_HIDDEN( __tls_end = ADDR(.main.tls) + SIZEOF(.tdata) );
/* Main BSS area */
.main.bss (NOLOAD) : {
EXCLUDE_FILE(*.twl.*) *(.dynbss)
EXCLUDE_FILE(*.twl.*) *(.bss .bss.* .gnu.linkonce.b.*)
EXCLUDE_FILE(*.twl.*) *(COMMON)
. = ALIGN(4);
} >main :bss
/* Information for BSS */
PROVIDE_HIDDEN( __main_bss_start = ADDR(.main.bss) );
PROVIDE_HIDDEN( __main_bss_end = ADDR(.main.bss) + SIZEOF(.main.bss) );
/* V */ /* <- bird? */
PROVIDE_HIDDEN( __end__ = __main_bss_end );
/* I hate this new linker, I the old one :( */
. = .;
_heap_start = .;
/* Define start of main heap in DS mode */
. = .;
PROVIDE_HIDDEN( __heap_start_ntr = . );
/* Ensure DS-mode sections fit within the DS's main RAM allotted to ARM9 */
ASSERT( . <= 0x2380000, "Error: DS-mode sections overflow DS ARM9 memory size (3.5 MB)" )
/* DSi exclusive code/read-only data section */
.twl ALIGN(32) : {
*(.twl .twl.*)
*.twl.* (.text .stub .text.* .gnu.linkonce.t.*)
*.twl.* (.glue_7t .glue_7 .vfp11_veneer .v4_bx)
*.twl.* (.rodata .rodata.* .gnu.linkonce.r.*)
*.twl.* (.rodata1)
. = ALIGN(4);
} >main AT>lma9i :twl = 0xff
/* DSi exclusive data section */
.twl.rw . : ALIGN_WITH_INPUT {
*.twl.* (.data .data.* .gnu.linkonce.d.*)
*.twl.* (.data1)
. = ALIGN(4);
} >main AT>lma9i :twl = 0xff
/* Load information for the DSi exclusive section */
PROVIDE_HIDDEN( __twl_lma = LOADADDR(.twl) );
PROVIDE_HIDDEN( __twl_start = ADDR(.twl) );
PROVIDE_HIDDEN( __twl_end = ADDR(.twl.rw) + SIZEOF(.twl.rw) );
/* DSi exclusive BSS area */
.twl.bss . (NOLOAD) : {
*(.twl_bss .twl_bss.*)
*.twl.* (.dynbss)
*.twl.* (.bss .bss.* .gnu.linkonce.b.*)
*.twl.* (COMMON)
. = ALIGN(4);
} >main AT>lma9i :twl
/* Information for DSi exclusive BSS area */
PROVIDE_HIDDEN( __twl_bss_start = ADDR(.twl.bss) );
PROVIDE_HIDDEN( __twl_bss_end = ADDR(.twl.bss) + SIZEOF(.twl.bss) );
/* Define start of main heap in DSi mode */
. = .;
PROVIDE_HIDDEN( __heap_start_twl = . );
/* Craft a loadlist */
.loadlist : {
LONG(__itcm_start)
LONG(__itcm_end)
LONG(__itcm_end)
LONG(__dtcm_start)
LONG(__dtcm_end)
LONG(__dtcm_bss_end)
LONG(__main_start)
LONG(__main_end)
LONG(__main_end)
LONG(__tls_start)
LONG(__tls_end)
LONG(__main_bss_end)
} >stub AT>lma9 :ldlist = 0xff
PROVIDE_HIDDEN( __loadlist_lma = __itcm_lma );
PROVIDE_HIDDEN( __loadlist_start = LOADADDR(.loadlist) );
PROVIDE_HIDDEN( __loadlist_end = LOADADDR(.loadlist) + SIZEOF(.loadlist) );
/* Craft a loadlist for DSi exclusive sections */
.twl.loadlist : {
LONG(__twl_start)
LONG(__twl_end)
LONG(__twl_bss_end)
} >stub AT>lma9i :twlld = 0xff
PROVIDE_HIDDEN( __twl_loadlist_lma = __twl_lma );
PROVIDE_HIDDEN( __twl_loadlist_start = LOADADDR(.twl.loadlist) );
PROVIDE_HIDDEN( __twl_loadlist_end = LOADADDR(.twl.loadlist) + SIZEOF(.twl.loadlist) );
/* ====================== */
/* Debugging metadata */
/* ====================== */
/* Stabs debugging sections. */
.stab 0 : { *(.stab) } :NONE
.stabstr 0 : { *(.stabstr) } :NONE
.stab.excl 0 : { *(.stab.excl) } :NONE
.stab.exclstr 0 : { *(.stab.exclstr) } :NONE
.stab.index 0 : { *(.stab.index) } :NONE
.stab.indexstr 0 : { *(.stab.indexstr) } :NONE
.comment 0 : { *(.comment) } :NONE
.gnu.build.attributes : { *(.gnu.build.attributes .gnu.build.attributes.*) } :NONE
/* 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) } :NONE
.line 0 : { *(.line) } :NONE
/* GNU DWARF 1 extensions */
.debug_srcinfo 0 : { *(.debug_srcinfo) } :NONE
.debug_sfnames 0 : { *(.debug_sfnames) } :NONE
/* DWARF 1.1 and DWARF 2 */
.debug_aranges 0 : { *(.debug_aranges) } :NONE
.debug_pubnames 0 : { *(.debug_pubnames) } :NONE
/* DWARF 2 */
.debug_info 0 : { *(.debug_info .gnu.linkonce.wi.*) } :NONE
.debug_abbrev 0 : { *(.debug_abbrev) } :NONE
.debug_line 0 : { *(.debug_line .debug_line.* .debug_line_end) } :NONE
.debug_frame 0 : { *(.debug_frame) } :NONE
.debug_str 0 : { *(.debug_str) } :NONE
.debug_loc 0 : { *(.debug_loc) } :NONE
.debug_macinfo 0 : { *(.debug_macinfo) } :NONE
/* SGI/MIPS DWARF 2 extensions */
.debug_weaknames 0 : { *(.debug_weaknames) } :NONE
.debug_funcnames 0 : { *(.debug_funcnames) } :NONE
.debug_typenames 0 : { *(.debug_typenames) } :NONE
.debug_varnames 0 : { *(.debug_varnames) } :NONE
/* DWARF 3 */
.debug_pubtypes 0 : { *(.debug_pubtypes) } :NONE
.debug_ranges 0 : { *(.debug_ranges) } :NONE
/* DWARF Extension. */
.debug_macro 0 : { *(.debug_macro) } :NONE
.debug_addr 0 : { *(.debug_addr) } :NONE
.ARM.attributes 0 : { KEEP (*(.ARM.attributes)) KEEP (*(.gnu.attributes)) } :NONE
.note.gnu.arm.ident 0 : { KEEP (*(.note.gnu.arm.ident)) } :NONE
/DISCARD/ : { *(.note.GNU-stack) *(.gnu_debuglink) *(.gnu.lto_*) *(.stack) }
}
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