diff --git a/exosphere/linker.ld b/exosphere/linker.ld index 5088a9b..43dac08 100644 --- a/exosphere/linker.ld +++ b/exosphere/linker.ld @@ -1,9 +1,21 @@ OUTPUT_ARCH(aarch64) ENTRY(__start_cold) +PHDRS +{ + ccrt0 PT_LOAD FLAGS(7) /* Read | Write | Execute */; + pk2ldr PT_LOAD FLAGS(7) /* Read | Write | Execute */; + wcrt0 PT_LOAD FLAGS(7) /* Read | Write | Execute */; + + code PT_LOAD FLAGS(5) /* Read | Execute */; + rodata PT_LOAD FLAGS(4) /* Read */; + data PT_LOAD FLAGS(6) /* Read | Write */; + + evt PT_LOAD FLAGS(5) /* Read | Execute */; +} + MEMORY { - NULL : ORIGIN = 0, LENGTH = 4K ccrt0 : ORIGIN = 0x040006000, LENGTH = 4K glob : ORIGIN = 0x040020000, LENGTH = 128K tzram : ORIGIN = 0x07C010000, LENGTH = 64K @@ -12,19 +24,19 @@ Normally the main code immediately follows the warmboot crt0, aligned to 256 bytes. We can't ensure or replicate that behavior properly so we'll just give 2K to the warmboot crt0. */ - warmboot_crt0 : ORIGIN = ORIGIN(tzram) + 12K, LENGTH = 2K + wcrt0 : ORIGIN = ORIGIN(tzram) + 12K, LENGTH = 2K /* 8K are the MMU L2 and L3 tables & 2K from the evt page */ - main : ORIGIN = 0x1F01E0000 + LENGTH(warmboot_crt0), LENGTH = LENGTH(tzram) - LENGTH(pk2ldr) - LENGTH(evt) - LENGTH(warmboot_crt0) - 10K - pk2ldr : ORIGIN = ORIGIN(main) - LENGTH(warmboot_crt0) + LENGTH(tzram), LENGTH = 8K + main : ORIGIN = 0x1F01E0000 + LENGTH(wcrt0), LENGTH = LENGTH(tzram) - LENGTH(pk2ldr) - LENGTH(evt) - LENGTH(wcrt0) - 10K + pk2ldr : ORIGIN = ORIGIN(main) - LENGTH(wcrt0) + LENGTH(tzram), LENGTH = 8K /* The first half of the page are exception entry stacks, the other half are the vectors themselves */ - evt : ORIGIN = ORIGIN(pk2ldr) + 40K + 2K, LENGTH = 2K + evt : ORIGIN = ORIGIN(pk2ldr) + 40K + 2K, LENGTH = 2K } SECTIONS { PROVIDE(__start__ = 0x040006000); - . = __start__; + . = ABSOLUTE(__start__); .cold_crt0 : { @@ -43,7 +55,7 @@ coldboot_init.o(.bss* COMMON) . = ALIGN(64); __cold_crt0_end__ = ABSOLUTE(.); - } >ccrt0 AT>glob + } >ccrt0 AT>glob :ccrt0 .pk2ldr : { @@ -53,17 +65,17 @@ KEEP (package2.o(.text*)) package2.o(.rodata*) package2.o(.data*) - . = ALIGN(8); - } >pk2ldr AT>glob + . = ALIGN(32); + } >pk2ldr AT>glob :pk2ldr - .pk2ldr.bss : + .pk2ldr.bss (NOLOAD) : { - . = ALIGN(8); + . = ALIGN(32); __pk2ldr_bss_start__ = ABSOLUTE(.); package2.o(.bss* COMMON) - . = ALIGN(8); + . = ALIGN(32); __pk2ldr_end__ = ABSOLUTE(.); - } >pk2ldr AT>glob + } >pk2ldr :NONE .vectors : { @@ -73,7 +85,7 @@ KEEP (*(.vectors*)) . = ALIGN(8); __vectors_end__ = ABSOLUTE(.); - } >evt AT>glob + } >evt AT>glob :evt .warm_crt0 : { @@ -92,7 +104,9 @@ warmboot_init.o(.bss*) . = ALIGN(64); __warmboot_crt0_end__ = ABSOLUTE(.); - } >warmboot_crt0 AT>glob + } >wcrt0 AT>glob :wcrt0 + + /* =========== CODE section =========== */ .text : { @@ -104,47 +118,64 @@ *(.text.startup .text.startup.*) *(.text.hot .text.hot.*) *(.text .stub .text.* .gnu.linkonce.t.*) - . = ALIGN(8); - } >main AT>glob + . = ALIGN(32); + } >main AT>glob :code .init : { KEEP( *(.init) ) . = ALIGN(8); - } >main AT>glob + } >main AT>glob :code .plt : { *(.plt) *(.iplt) . = ALIGN(8); - } >main AT>glob - + } >main AT>glob :code .fini : { KEEP( *(.fini) ) . = ALIGN(8); - } >main AT>glob + } >main AT>glob :code + + /* =========== RODATA section =========== */ .rodata : { *(.rodata .rodata.* .gnu.linkonce.r.*) - SORT(CONSTRUCTORS) . = ALIGN(8); - } >main AT>glob + } >main AT>glob :rodata - .got : { __got_start__ = ABSOLUTE(.); *(.got) *(.igot) } >main AT>glob - .got.plt : { *(.got.plt) *(.igot.plt) __got_end__ = ABSOLUTE(.);} >main AT>glob + .eh_frame_hdr : ONLY_IF_RO { *(.eh_frame_hdr) *(.eh_frame_entry .eh_frame_entry.*) } >main AT>glob :rodata + .eh_frame : ONLY_IF_RO { KEEP (*(.eh_frame)) *(.eh_frame.*) } >main AT>glob :rodata + .gcc_except_table : ONLY_IF_RO { *(.gcc_except_table .gcc_except_table.*) } >main AT>glob :rodata + .gnu_extab : ONLY_IF_RO { *(.gnu_extab*) } >main AT>glob :rodata + .exception_ranges : ONLY_IF_RO { *(.exception_ranges .exception_ranges*) } >main AT>glob :rodata - .preinit_array : + .note.gnu.build-id : { *(.note.gnu.build-id) } >main AT>glob :rodata + .hash : { *(.hash) } >main AT>glob :rodata + .gnu.hash : { *(.gnu.hash) } >main AT>glob :rodata + .gnu.version : { *(.gnu.version) } >main AT>glob :rodata + .gnu.version_d : { *(.gnu.version_d) } >main AT>glob :rodata + .gnu.version_r : { *(.gnu.version_r) } >main AT>glob :rodata + + /* =========== DATA section =========== */ + + .eh_frame_hdr : ONLY_IF_RW { *(.eh_frame_hdr) *(.eh_frame_entry .eh_frame_entry.*) } >main AT>glob :data + .eh_frame : ONLY_IF_RW { KEEP (*(.eh_frame)) *(.eh_frame.*) } >main AT>glob :data + .gcc_except_table : ONLY_IF_RW { *(.gcc_except_table .gcc_except_table.*) } >main AT>glob :data + .gnu_extab : ONLY_IF_RW { *(.gnu_extab*) } >main AT>glob :data + .exception_ranges : ONLY_IF_RW { *(.exception_ranges .exception_ranges*) } >main AT>glob :data + + .preinit_array ALIGN(8) : { - . = ALIGN(8); PROVIDE (__preinit_array_start = .); KEEP (*(.preinit_array)) PROVIDE (__preinit_array_end = .); . = ALIGN(8); - } >main AT>glob + } >main AT>glob :data .init_array : { @@ -152,75 +183,56 @@ KEEP (*(SORT(.init_array.*))) KEEP (*(.init_array)) PROVIDE (__init_array_end = .); - } >main AT>glob + } >main AT>glob :data .fini_array : { - . = ALIGN(8); PROVIDE (__fini_array_start = .); KEEP (*(.fini_array)) KEEP (*(SORT(.fini_array.*))) PROVIDE (__fini_array_end = .); . = ALIGN(8); - } >main AT>glob + } >main AT>glob :data .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); - } >main AT>glob + } >main AT>glob :data - .dtors ALIGN(8) : + .dtors : { - . = ALIGN(8); KEEP (*crtbegin.o(.dtors)) KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors)) KEEP (*(SORT(.dtors.*))) KEEP (*(.dtors)) . = ALIGN(8); - } >main AT>glob + } >main AT>glob :data - .data ALIGN(8) : + .got : { __got_start__ = ABSOLUTE(.); *(.got) *(.igot) } >main AT>glob :data + .got.plt : { *(.got.plt) *(.igot.plt) __got_end__ = ABSOLUTE(.);} >main AT>glob :data + + .data : { *(.data .data.* .gnu.linkonce.d.*) - CONSTRUCTORS - . = ALIGN(8); - } >main AT>glob + SORT(CONSTRUCTORS) + . = ALIGN(32); + } >main AT>glob :data - - .eh_frame_hdr : { *(.eh_frame_hdr) *(.eh_frame_entry .eh_frame_entry.*) } >main AT>glob - .eh_frame : { KEEP (*(.eh_frame)) *(.eh_frame.*) } >main AT>glob - .gcc_except_table : { *(.gcc_except_table .gcc_except_table.*) } >main AT>glob - .gnu_extab : { *(.gnu_extab*) } >main AT>glob - .exception_ranges : { *(.exception_ranges .exception_ranges*) } >main AT>glob - - .dynamic : { *(.dynamic) } >main AT>glob - .interp : { *(.interp) } >main AT>glob - .note.gnu.build-id : { *(.note.gnu.build-id) } >main AT>glob - .hash : { *(.hash) } >main AT>glob - .gnu.hash : { *(.gnu.hash) } >main AT>glob - .gnu.version : { *(.gnu.version) } >main AT>glob - .gnu.version_d : { *(.gnu.version_d) } >main AT>glob - .gnu.version_r : { *(.gnu.version_r) } >main AT>glob - .dynsym : { *(.dynsym) } >main AT>glob - .dynstr : { *(.dynstr) } >main AT>glob - .rela.dyn : { *(.rela.*); __main_end__ = ABSOLUTE(.);} >main AT>glob - - .bss : + .bss (NOLOAD) : { - . = ALIGN(8); + . = ALIGN(32); __main_bss_start__ = ABSOLUTE(.); __loaded_end_lma__ = LOADADDR(.bss); *(.dynbss) *(.bss .bss.* .gnu.linkonce.b.*) *(COMMON) - . = ALIGN(8); + . = ALIGN(32); __main_end__ = ABSOLUTE(.); - } >main AT>glob + } >main :NONE __end__ = ABSOLUTE(.) ;