mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-12-22 12:21:18 +00:00
Refactor exosphère's linker script
To properly separate text/rodata/data+bss, page-alignment needs to be added, as well as some symbol definitions and support code...
This commit is contained in:
TuxSH
parent
d57f4c54a9
commit
ad5be3cae5
1 changed files with 75 additions and 63 deletions
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@ -1,9 +1,21 @@
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OUTPUT_ARCH(aarch64)
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ENTRY(__start_cold)
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PHDRS
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{
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ccrt0 PT_LOAD FLAGS(7) /* Read | Write | Execute */;
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pk2ldr PT_LOAD FLAGS(7) /* Read | Write | Execute */;
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wcrt0 PT_LOAD FLAGS(7) /* Read | Write | Execute */;
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code PT_LOAD FLAGS(5) /* Read | Execute */;
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rodata PT_LOAD FLAGS(4) /* Read */;
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data PT_LOAD FLAGS(6) /* Read | Write */;
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evt PT_LOAD FLAGS(5) /* Read | Execute */;
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}
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MEMORY
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{
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NULL : ORIGIN = 0, LENGTH = 4K
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ccrt0 : ORIGIN = 0x040006000, LENGTH = 4K
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glob : ORIGIN = 0x040020000, LENGTH = 128K
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tzram : ORIGIN = 0x07C010000, LENGTH = 64K
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@ -12,19 +24,19 @@ MEMORY
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Normally the main code immediately follows the warmboot crt0, aligned to 256 bytes.
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We can't ensure or replicate that behavior properly so we'll just give 2K to the warmboot crt0.
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*/
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warmboot_crt0 : ORIGIN = ORIGIN(tzram) + 12K, LENGTH = 2K
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wcrt0 : ORIGIN = ORIGIN(tzram) + 12K, LENGTH = 2K
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/* 8K are the MMU L2 and L3 tables & 2K from the evt page */
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main : ORIGIN = 0x1F01E0000 + LENGTH(warmboot_crt0), LENGTH = LENGTH(tzram) - LENGTH(pk2ldr) - LENGTH(evt) - LENGTH(warmboot_crt0) - 10K
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pk2ldr : ORIGIN = ORIGIN(main) - LENGTH(warmboot_crt0) + LENGTH(tzram), LENGTH = 8K
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main : ORIGIN = 0x1F01E0000 + LENGTH(wcrt0), LENGTH = LENGTH(tzram) - LENGTH(pk2ldr) - LENGTH(evt) - LENGTH(wcrt0) - 10K
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pk2ldr : ORIGIN = ORIGIN(main) - LENGTH(wcrt0) + LENGTH(tzram), LENGTH = 8K
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/* The first half of the page are exception entry stacks, the other half are the vectors themselves */
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evt : ORIGIN = ORIGIN(pk2ldr) + 40K + 2K, LENGTH = 2K
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evt : ORIGIN = ORIGIN(pk2ldr) + 40K + 2K, LENGTH = 2K
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}
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SECTIONS
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{
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PROVIDE(__start__ = 0x040006000);
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. = __start__;
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. = ABSOLUTE(__start__);
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.cold_crt0 :
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{
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@ -43,7 +55,7 @@ SECTIONS
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coldboot_init.o(.bss* COMMON)
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. = ALIGN(64);
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__cold_crt0_end__ = ABSOLUTE(.);
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} >ccrt0 AT>glob
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} >ccrt0 AT>glob :ccrt0
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.pk2ldr :
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{
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@ -53,17 +65,17 @@ SECTIONS
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KEEP (package2.o(.text*))
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package2.o(.rodata*)
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package2.o(.data*)
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. = ALIGN(8);
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} >pk2ldr AT>glob
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. = ALIGN(32);
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} >pk2ldr AT>glob :pk2ldr
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.pk2ldr.bss :
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.pk2ldr.bss (NOLOAD) :
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{
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. = ALIGN(8);
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. = ALIGN(32);
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__pk2ldr_bss_start__ = ABSOLUTE(.);
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package2.o(.bss* COMMON)
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. = ALIGN(8);
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. = ALIGN(32);
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__pk2ldr_end__ = ABSOLUTE(.);
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} >pk2ldr AT>glob
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} >pk2ldr :NONE
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.vectors :
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{
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@ -73,7 +85,7 @@ SECTIONS
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KEEP (*(.vectors*))
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. = ALIGN(8);
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__vectors_end__ = ABSOLUTE(.);
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} >evt AT>glob
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} >evt AT>glob :evt
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.warm_crt0 :
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{
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@ -92,7 +104,9 @@ SECTIONS
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warmboot_init.o(.bss*)
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. = ALIGN(64);
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__warmboot_crt0_end__ = ABSOLUTE(.);
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} >warmboot_crt0 AT>glob
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} >wcrt0 AT>glob :wcrt0
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/* =========== CODE section =========== */
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.text :
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{
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@ -104,47 +118,64 @@ SECTIONS
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*(.text.startup .text.startup.*)
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*(.text.hot .text.hot.*)
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*(.text .stub .text.* .gnu.linkonce.t.*)
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. = ALIGN(8);
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} >main AT>glob
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. = ALIGN(32);
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} >main AT>glob :code
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.init :
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{
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KEEP( *(.init) )
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. = ALIGN(8);
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} >main AT>glob
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} >main AT>glob :code
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.plt :
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{
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*(.plt)
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*(.iplt)
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. = ALIGN(8);
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} >main AT>glob
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} >main AT>glob :code
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.fini :
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{
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KEEP( *(.fini) )
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. = ALIGN(8);
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} >main AT>glob
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} >main AT>glob :code
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/* =========== RODATA section =========== */
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.rodata :
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{
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*(.rodata .rodata.* .gnu.linkonce.r.*)
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SORT(CONSTRUCTORS)
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. = ALIGN(8);
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} >main AT>glob
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} >main AT>glob :rodata
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.got : { __got_start__ = ABSOLUTE(.); *(.got) *(.igot) } >main AT>glob
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.got.plt : { *(.got.plt) *(.igot.plt) __got_end__ = ABSOLUTE(.);} >main AT>glob
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.eh_frame_hdr : ONLY_IF_RO { *(.eh_frame_hdr) *(.eh_frame_entry .eh_frame_entry.*) } >main AT>glob :rodata
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.eh_frame : ONLY_IF_RO { KEEP (*(.eh_frame)) *(.eh_frame.*) } >main AT>glob :rodata
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.gcc_except_table : ONLY_IF_RO { *(.gcc_except_table .gcc_except_table.*) } >main AT>glob :rodata
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.gnu_extab : ONLY_IF_RO { *(.gnu_extab*) } >main AT>glob :rodata
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.exception_ranges : ONLY_IF_RO { *(.exception_ranges .exception_ranges*) } >main AT>glob :rodata
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.preinit_array :
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.note.gnu.build-id : { *(.note.gnu.build-id) } >main AT>glob :rodata
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.hash : { *(.hash) } >main AT>glob :rodata
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.gnu.hash : { *(.gnu.hash) } >main AT>glob :rodata
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.gnu.version : { *(.gnu.version) } >main AT>glob :rodata
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.gnu.version_d : { *(.gnu.version_d) } >main AT>glob :rodata
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.gnu.version_r : { *(.gnu.version_r) } >main AT>glob :rodata
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/* =========== DATA section =========== */
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.eh_frame_hdr : ONLY_IF_RW { *(.eh_frame_hdr) *(.eh_frame_entry .eh_frame_entry.*) } >main AT>glob :data
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.eh_frame : ONLY_IF_RW { KEEP (*(.eh_frame)) *(.eh_frame.*) } >main AT>glob :data
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.gcc_except_table : ONLY_IF_RW { *(.gcc_except_table .gcc_except_table.*) } >main AT>glob :data
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.gnu_extab : ONLY_IF_RW { *(.gnu_extab*) } >main AT>glob :data
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.exception_ranges : ONLY_IF_RW { *(.exception_ranges .exception_ranges*) } >main AT>glob :data
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.preinit_array ALIGN(8) :
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{
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. = ALIGN(8);
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PROVIDE (__preinit_array_start = .);
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KEEP (*(.preinit_array))
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PROVIDE (__preinit_array_end = .);
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. = ALIGN(8);
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} >main AT>glob
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} >main AT>glob :data
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.init_array :
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{
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@ -152,75 +183,56 @@ SECTIONS
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KEEP (*(SORT(.init_array.*)))
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KEEP (*(.init_array))
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PROVIDE (__init_array_end = .);
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} >main AT>glob
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} >main AT>glob :data
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.fini_array :
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{
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. = ALIGN(8);
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PROVIDE (__fini_array_start = .);
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KEEP (*(.fini_array))
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KEEP (*(SORT(.fini_array.*)))
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PROVIDE (__fini_array_end = .);
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. = ALIGN(8);
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} >main AT>glob
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} >main AT>glob :data
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.ctors :
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{
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. = ALIGN(8);
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KEEP (*crtbegin.o(.ctors)) /* MUST be first -- GCC requires it */
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KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
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KEEP (*(SORT(.ctors.*)))
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KEEP (*(.ctors))
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. = ALIGN(8);
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} >main AT>glob
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} >main AT>glob :data
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.dtors ALIGN(8) :
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.dtors :
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{
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. = ALIGN(8);
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KEEP (*crtbegin.o(.dtors))
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KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
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KEEP (*(SORT(.dtors.*)))
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KEEP (*(.dtors))
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. = ALIGN(8);
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} >main AT>glob
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} >main AT>glob :data
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.data ALIGN(8) :
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.got : { __got_start__ = ABSOLUTE(.); *(.got) *(.igot) } >main AT>glob :data
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.got.plt : { *(.got.plt) *(.igot.plt) __got_end__ = ABSOLUTE(.);} >main AT>glob :data
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.data :
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{
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*(.data .data.* .gnu.linkonce.d.*)
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CONSTRUCTORS
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. = ALIGN(8);
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} >main AT>glob
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SORT(CONSTRUCTORS)
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. = ALIGN(32);
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} >main AT>glob :data
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.eh_frame_hdr : { *(.eh_frame_hdr) *(.eh_frame_entry .eh_frame_entry.*) } >main AT>glob
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.eh_frame : { KEEP (*(.eh_frame)) *(.eh_frame.*) } >main AT>glob
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.gcc_except_table : { *(.gcc_except_table .gcc_except_table.*) } >main AT>glob
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.gnu_extab : { *(.gnu_extab*) } >main AT>glob
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.exception_ranges : { *(.exception_ranges .exception_ranges*) } >main AT>glob
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.dynamic : { *(.dynamic) } >main AT>glob
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.interp : { *(.interp) } >main AT>glob
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.note.gnu.build-id : { *(.note.gnu.build-id) } >main AT>glob
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.hash : { *(.hash) } >main AT>glob
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.gnu.hash : { *(.gnu.hash) } >main AT>glob
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.gnu.version : { *(.gnu.version) } >main AT>glob
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.gnu.version_d : { *(.gnu.version_d) } >main AT>glob
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.gnu.version_r : { *(.gnu.version_r) } >main AT>glob
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.dynsym : { *(.dynsym) } >main AT>glob
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.dynstr : { *(.dynstr) } >main AT>glob
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.rela.dyn : { *(.rela.*); __main_end__ = ABSOLUTE(.);} >main AT>glob
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.bss :
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.bss (NOLOAD) :
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{
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. = ALIGN(8);
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. = ALIGN(32);
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__main_bss_start__ = ABSOLUTE(.);
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__loaded_end_lma__ = LOADADDR(.bss);
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*(.dynbss)
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*(.bss .bss.* .gnu.linkonce.b.*)
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*(COMMON)
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. = ALIGN(8);
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. = ALIGN(32);
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__main_end__ = ABSOLUTE(.);
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} >main AT>glob
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} >main :NONE
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__end__ = ABSOLUTE(.) ;
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