mirror of https://github.com/ncroxon/gnu-efi
Make loongarch64 use efi-app-loongarch64
Binutils 2.41 now supports efi-app-loongarch64, so to use this we must add a dummy reloc section and remove the PE header definition from crt0 as this will conflict with the version added by objcopy Signed-off-by: Xiaotian Wu <wuxiaotian@loongson.cn>
This commit is contained in:
Xiaotian Wu
Nigel Croxon
parent
fe31748c87
commit
feedeaa339
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@ -161,18 +161,16 @@ endif
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ifneq ($(ARCH),arm)
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ifneq ($(ARCH),mips64el)
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ifneq ($(ARCH),riscv64)
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ifneq ($(ARCH),loongarch64)
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export HAVE_EFI_OBJCOPY=y
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endif
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endif
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endif
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endif
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ifeq ($(ARCH),arm)
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CFLAGS += -marm
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endif
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ifneq (,$(filter $(ARCH),aarch64 arm))
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ifneq (,$(filter $(ARCH),aarch64 arm loongarch64))
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LDFLAGS += -z common-page-size=4096
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LDFLAGS += -z max-page-size=4096
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endif
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@ -17,125 +17,8 @@
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* either version 2 of the License, or (at your option) any later version.
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*/
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#ifndef EFI_SUBSYSTEM
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#define EFI_SUBSYSTEM 0xa
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#endif
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.section .text.head
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/*
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* Magic "MZ" signature for PE/COFF
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*/
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.globl ImageBase
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ImageBase:
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.ascii "MZ"
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.skip 58 // 'MZ' + pad + offset == 64
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.4byte pe_header - ImageBase // Offset to the PE header.
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pe_header:
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.ascii "PE"
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.2byte 0
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coff_header:
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.2byte 0x6264 // loongarch64 little endian
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.2byte 2 // nr_sections
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.4byte 0 // TimeDateStamp
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.4byte 0 // PointerToSymbolTable
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.4byte 1 // NumberOfSymbols
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.2byte section_table - optional_header // SizeOfOptionalHeader
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.2byte 0x206 // Characteristics.
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// IMAGE_FILE_DEBUG_STRIPPED |
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// IMAGE_FILE_EXECUTABLE_IMAGE |
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// IMAGE_FILE_LINE_NUMS_STRIPPED
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optional_header:
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.2byte 0x20b // PE32+ format
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.byte 0x02 // MajorLinkerVersion
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.byte 0x14 // MinorLinkerVersion
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.4byte _edata - _start // SizeOfCode
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.4byte 0 // SizeOfInitializedData
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.4byte 0 // SizeOfUninitializedData
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.4byte _start - ImageBase // AddressOfEntryPoint
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.4byte _start - ImageBase // BaseOfCode
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extra_header_fields:
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.8byte 0 // ImageBase
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.4byte 0x20 // SectionAlignment
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.4byte 0x8 // FileAlignment
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.2byte 0 // MajorOperatingSystemVersion
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.2byte 0 // MinorOperatingSystemVersion
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.2byte 0 // MajorImageVersion
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.2byte 0 // MinorImageVersion
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.2byte 0 // MajorSubsystemVersion
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.2byte 0 // MinorSubsystemVersion
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.4byte 0 // Win32VersionValue
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.4byte _edata - ImageBase // SizeOfImage
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// Everything before the kernel image is considered part of the header
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.4byte _start - ImageBase // SizeOfHeaders
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.4byte 0 // CheckSum
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.2byte EFI_SUBSYSTEM // Subsystem
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.2byte 0 // DllCharacteristics
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.8byte 0 // SizeOfStackReserve
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.8byte 0 // SizeOfStackCommit
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.8byte 0 // SizeOfHeapReserve
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.8byte 0 // SizeOfHeapCommit
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.4byte 0 // LoaderFlags
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.4byte 0x10 // NumberOfRvaAndSizes
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.8byte 0 // ExportTable
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.8byte 0 // ImportTable
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.8byte 0 // ResourceTable
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.8byte 0 // ExceptionTable
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.8byte 0 // CertificationTable
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.8byte 0 // BaseRelocationTable
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.8byte 0 // Debug
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.8byte 0 // Architecture
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.8byte 0 // Global Ptr
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.8byte 0 // TLS Table
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.8byte 0 // Load Config Table
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.8byte 0 // Bound Import
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.8byte 0 // IAT
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.8byte 0 // Delay Import Descriptor
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.8byte 0 // CLR Runtime Header
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.8byte 0 // Reserved, must be zero
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// Section table
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section_table:
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/*
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* The EFI application loader requires a relocation section
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* because EFI applications must be relocatable. This is a
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* dummy section as far as we are concerned.
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*/
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.ascii ".reloc"
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.byte 0
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.byte 0 // end of 0 padding of section name
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.4byte 0
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.4byte 0
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.4byte 0 // SizeOfRawData
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.4byte 0 // PointerToRawData
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.4byte 0 // PointerToRelocations
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.4byte 0 // PointerToLineNumbers
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.2byte 0 // NumberOfRelocations
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.2byte 0 // NumberOfLineNumbers
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.4byte 0x42100040 // Characteristics (section flags)
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.ascii ".text"
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.byte 0
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.byte 0
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.byte 0 // end of 0 padding of section name
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.4byte _edata - _start // VirtualSize
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.4byte _start - ImageBase // VirtualAddress
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.4byte _edata - _start // SizeOfRawData
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.4byte _start - ImageBase // PointerToRawData
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.4byte 0 // PointerToRelocations (0 for executables)
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.4byte 0 // PointerToLineNumbers (0 for executables)
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.2byte 0 // NumberOfRelocations (0 for executables)
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.2byte 0 // NumberOfLineNumbers (0 for executables)
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.4byte 0xe0500020 // Characteristics (section flags)
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.align 4
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.text
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.align 12
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.globl _start
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.type _start, @function
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_start:
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@ -153,9 +36,25 @@ _start:
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ld.d $a0, $sp, 8
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ld.d $a1, $sp, 16
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bl efi_main
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bl _entry
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0: ld.d $ra, $sp, 0
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addi.d $sp, $sp, 24
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jr $ra
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.end _start
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// hand-craft a dummy .reloc section so EFI knows it's a relocatable executable:
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.data
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dummy: .4byte 0
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#define IMAGE_REL_ABSOLUTE 0
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.section .reloc, "a"
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label1:
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.4byte dummy-label1 // Page RVA
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.4byte 12 // Block Size (2*4+2*2), must be aligned by 32 Bits
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.2byte (IMAGE_REL_ABSOLUTE<<12) + 0 // reloc for dummy
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.2byte (IMAGE_REL_ABSOLUTE<<12) + 0 // reloc for dummy
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#if defined(__ELF__) && defined(__linux__)
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.section .note.GNU-stack,"",%progbits
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#endif
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@ -3,9 +3,17 @@ OUTPUT_ARCH(loongarch)
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ENTRY(_start)
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SECTIONS
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{
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.text 0x0 : {
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. = 0;
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ImageBase = .;
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/* .hash and/or .gnu.hash MUST come first! */
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.hash : { *(.hash) }
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.gnu.hash : { *(.gnu.hash) }
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. = ALIGN(4096);
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.eh_frame : { *(.eh_frame) }
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.gcc_except_table : { *(.gcc_except_table*) }
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. = ALIGN(4096);
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.text : {
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_text = .;
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*(.text.head)
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*(.text)
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*(.text.*)
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*(.gnu.linkonce.t.*)
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@ -14,8 +22,15 @@ SECTIONS
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}
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_etext = .;
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_text_size = _etext - _text;
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. = ALIGN(4096);
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.reloc :
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{
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KEEP (*(.reloc))
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}
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. = ALIGN(65536);
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.dynamic : { *(.dynamic) }
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.data : ALIGN(4096)
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. = ALIGN(4096);
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.data :
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{
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_data = .;
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*(.sdata)
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@ -25,6 +40,33 @@ SECTIONS
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*(.got.plt)
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*(.got)
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/*
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* Note that these aren't the using the GNU "CONSTRUCTOR" output section
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* command, so they don't start with a size. Because of p2align and the
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* end/END definitions, and the fact that they're mergeable, they can also
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* have NULLs which aren't guaranteed to be at the end.
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*/
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. = ALIGN(16);
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__init_array_start = .;
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*(SORT(.init_array.*))
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*(.init_array)
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__init_array_end = .;
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. = ALIGN(16);
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__CTOR_LIST__ = .;
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*(SORT(.ctors.*))
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*(.ctors)
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__CTOR_END__ = .;
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. = ALIGN(16);
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__DTOR_LIST__ = .;
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*(SORT(.dtors.*))
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*(.dtors)
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__DTOR_END__ = .;
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. = ALIGN(16);
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__fini_array_start = .;
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*(SORT(.fini_array.*))
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*(.fini_array)
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__fini_array_end = .;
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/* the EFI loader doesn't seem to like a .bss section, so we stick
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it all into .data: */
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. = ALIGN(16);
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@ -32,16 +74,30 @@ SECTIONS
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*(.sbss)
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*(.scommon)
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*(.dynbss)
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*(.bss)
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*(.bss*)
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*(COMMON)
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*(.rel.local)
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. = ALIGN(16);
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_bss_end = .;
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}
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.rela.dyn : { *(.rela.dyn) }
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. = ALIGN(4096);
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.rela :
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{
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*(.rela.text*)
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*(.rela.data*)
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*(.rela.got)
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*(.rela.dyn)
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*(.rela.stab)
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*(.rela.init_array*)
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*(.rela.fini_array*)
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*(.rela.ctors*)
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*(.rela.dtors*)
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}
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. = ALIGN(4096);
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.rela.plt : { *(.rela.plt) }
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.rela.got : { *(.rela.got) }
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.rela.data : { *(.rela.data) *(.rela.data*) }
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. = ALIGN(4096);
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.rodata : { *(.rodata*) }
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. = ALIGN(512);
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@ -54,10 +110,9 @@ SECTIONS
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.dynstr : { *(.dynstr) }
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. = ALIGN(4096);
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.note.gnu.build-id : { *(.note.gnu.build-id) }
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/DISCARD/ :
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.ignored.reloc :
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{
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*(.rel.reloc)
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*(.eh_frame)
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*(.rela.reloc)
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*(.note.GNU-stack)
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}
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.comment 0 : { *(.comment) }
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