mirror of https://github.com/ncroxon/gnu-efi
Add support for 64 bit MIPS
This is a patch to add support for 64-bit MIPS. Signed-off-by: Hev heiher <heiher@users.sf.net> Signed-off-by: Nigel Croxon <noxorc@mac.com>
This commit is contained in:
Nigel Croxon
parent
87484730de
commit
3f234f5b6f
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@ -117,15 +117,22 @@ ifeq ($(ARCH),x86_64)
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endif
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endif
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ifeq ($(ARCH),mips64el)
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CFLAGS += -march=mips64r2
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ARCH3264 = -mabi=64
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endif
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#
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# Set HAVE_EFI_OBJCOPY if objcopy understands --target efi-[app|bsdrv|rtdrv],
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# otherwise we need to compose the PE/COFF header using the assembler
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#
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ifneq ($(ARCH),aarch64)
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ifneq ($(ARCH),arm)
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ifneq ($(ARCH),mips64el)
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export HAVE_EFI_OBJCOPY=y
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endif
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endif
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endif
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ifneq ($(ARCH),arm)
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export LIBGCC=$(shell $(CC) $(ARCH3264) -print-libgcc-file-name)
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@ -0,0 +1,188 @@
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/*
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* crt0-efi-mips64el.S - PE/COFF header for MIPS64 EFI applications
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*
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* Copright (C) 2014 Linaro Ltd. <ard.biesheuvel@linaro.org>
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* Copright (C) 2017 Heiher <r@hev.cc>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice and this list of conditions, without modification.
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* 2. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License as published by the Free Software Foundation;
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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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.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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.long pe_header - ImageBase // Offset to the PE header.
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pe_header:
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.ascii "PE"
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.short 0
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coff_header:
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.short 0x166 // MIPS little endian
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.short 2 // nr_sections
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.long 0 // TimeDateStamp
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.long 0 // PointerToSymbolTable
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.long 1 // NumberOfSymbols
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.short section_table - optional_header // SizeOfOptionalHeader
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.short 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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.short 0x20b // PE32+ format
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.byte 0x02 // MajorLinkerVersion
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.byte 0x14 // MinorLinkerVersion
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.long _edata - _start // SizeOfCode
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.long 0 // SizeOfInitializedData
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.long 0 // SizeOfUninitializedData
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.long _start - ImageBase // AddressOfEntryPoint
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.long _start - ImageBase // BaseOfCode
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extra_header_fields:
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.quad 0 // ImageBase
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.long 0x20 // SectionAlignment
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.long 0x8 // FileAlignment
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.short 0 // MajorOperatingSystemVersion
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.short 0 // MinorOperatingSystemVersion
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.short 0 // MajorImageVersion
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.short 0 // MinorImageVersion
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.short 0 // MajorSubsystemVersion
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.short 0 // MinorSubsystemVersion
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.long 0 // Win32VersionValue
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.long _edata - ImageBase // SizeOfImage
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// Everything before the kernel image is considered part of the header
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.long _start - ImageBase // SizeOfHeaders
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.long 0 // CheckSum
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.short EFI_SUBSYSTEM // Subsystem
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.short 0 // DllCharacteristics
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.quad 0 // SizeOfStackReserve
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.quad 0 // SizeOfStackCommit
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.quad 0 // SizeOfHeapReserve
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.quad 0 // SizeOfHeapCommit
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.long 0 // LoaderFlags
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.long 0x6 // NumberOfRvaAndSizes
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.quad 0 // ExportTable
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.quad 0 // ImportTable
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.quad 0 // ResourceTable
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.quad 0 // ExceptionTable
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.quad 0 // CertificationTable
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.quad 0 // BaseRelocationTable
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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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.long 0
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.long 0
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.long 0 // SizeOfRawData
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.long 0 // PointerToRawData
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.long 0 // PointerToRelocations
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.long 0 // PointerToLineNumbers
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.short 0 // NumberOfRelocations
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.short 0 // NumberOfLineNumbers
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.long 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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.long _edata - _start // VirtualSize
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.long _start - ImageBase // VirtualAddress
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.long _edata - _start // SizeOfRawData
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.long _start - ImageBase // PointerToRawData
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.long 0 // PointerToRelocations (0 for executables)
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.long 0 // PointerToLineNumbers (0 for executables)
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.short 0 // NumberOfRelocations (0 for executables)
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.short 0 // NumberOfLineNumbers (0 for executables)
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.long 0xe0500020 // Characteristics (section flags)
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.set push
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.set noreorder
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.align 4
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.globl _start
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.ent _start
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.type _start, @function
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_start:
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daddiu $sp, -32
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sd $ra, ($sp)
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// Get pc & gp
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.align 3
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bal 1f
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sd $gp, 8($sp)
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_pc:
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.dword _gp
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.dword _DYNAMIC
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.dword _relocate
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1:
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// pc in ra
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ld $gp, ($ra)
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dli $t0, _pc
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dsubu $gp, $t0
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daddu $gp, $ra
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sd $a0, 16($sp)
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sd $a1, 24($sp)
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// a2: ImageHandle
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move $a2, $a0
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// a3: SystemTable
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move $a3, $a1
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// a0: ImageBase
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dli $t1, ImageBase - _pc
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daddu $a0, $ra, $t1
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// a1: DynamicSection
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ld $t1, 8($ra)
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dsubu $t1, $t0
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daddu $a1, $ra, $t1
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// call _relocate
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ld $t1, 16($ra)
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dsubu $t1, $t0
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daddu $t9, $ra, $t1
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jalr $t9
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nop
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bnez $v0, 1b
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nop
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// a0: ImageHandle
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ld $a0, 16($sp)
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// call efi_main
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dla $t9, efi_main
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jalr $t9
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// a1: SystemTable
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ld $a1, 24($sp)
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1:
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ld $gp, 8($sp)
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ld $ra, ($sp)
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jr $ra
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daddiu $sp, 32
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.end _start
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.set pop
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@ -0,0 +1,64 @@
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OUTPUT_FORMAT("elf64-tradlittlemips", "elf64-tradbigmips", "elf64-tradlittlemips")
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OUTPUT_ARCH(mips)
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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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_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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*(.srodata)
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*(.rodata*)
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. = ALIGN(16);
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}
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_etext = .;
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_text_size = . - _text;
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.dynamic : { *(.dynamic) }
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.data :
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{
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_data = .;
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*(.sdata)
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*(.data)
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*(.data1)
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*(.data.*)
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*(.got.plt)
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HIDDEN (_gp = ALIGN (16) + 0x7ff0);
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*(.got)
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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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_bss = .;
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*(.sbss)
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*(.scommon)
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*(.dynbss)
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*(.bss)
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*(COMMON)
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. = ALIGN(16);
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_bss_end = .;
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}
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.rel.dyn : { *(.rel.dyn) }
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.rel.plt : { *(.rel.plt) }
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.rel.got : { *(.rel.got) }
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.rel.data : { *(.rel.data) *(.rel.data*) }
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_edata = .;
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_data_size = . - _etext;
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. = ALIGN(4096);
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.dynsym : { *(.dynsym) }
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. = ALIGN(4096);
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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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{
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*(.rel.reloc)
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*(.eh_frame)
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*(.MIPS.abiflags)
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*(.note.GNU-stack)
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}
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.comment 0 : { *(.comment) }
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}
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@ -0,0 +1,115 @@
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/* reloc_mips64el.c - position independent MIPS64 ELF shared object relocator
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Copyright (C) 2014 Linaro Ltd. <ard.biesheuvel@linaro.org>
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Copyright (C) 1999 Hewlett-Packard Co.
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Contributed by David Mosberger <davidm@hpl.hp.com>.
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Copyright (C) 2017 Lemote Co.
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Contributed by Heiher <r@hev.cc>
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the following
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disclaimer in the documentation and/or other materials
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provided with the distribution.
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* Neither the name of Hewlett-Packard Co. nor the names of its
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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BE LIABLE FOR ANYDIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
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TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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SUCH DAMAGE.
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*/
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#include <efi.h>
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#include <efilib.h>
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#include <elf.h>
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EFI_STATUS _relocate (long ldbase, Elf64_Dyn *dyn,
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EFI_HANDLE image EFI_UNUSED,
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EFI_SYSTEM_TABLE *systab EFI_UNUSED)
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{
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long relsz = 0, relent = 0, gotsz = 0;
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Elf64_Rel *rel = 0;
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unsigned long *addr = 0;
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int i;
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for (i = 0; dyn[i].d_tag != DT_NULL; ++i) {
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switch (dyn[i].d_tag) {
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case DT_REL:
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rel = (Elf64_Rel*)
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((unsigned long)dyn[i].d_un.d_ptr
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+ ldbase);
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break;
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case DT_RELSZ:
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relsz = dyn[i].d_un.d_val;
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break;
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case DT_RELENT:
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relent = dyn[i].d_un.d_val;
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break;
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case DT_PLTGOT:
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addr = (unsigned long *)
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((unsigned long)dyn[i].d_un.d_ptr
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+ ldbase);
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break;
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case DT_MIPS_LOCAL_GOTNO:
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gotsz = dyn[i].d_un.d_val;
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break;
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default:
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break;
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}
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}
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if ((!rel && relent == 0) && (!addr && gotsz == 0))
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return EFI_SUCCESS;
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if ((!rel && relent != 0) || (!addr && gotsz != 0))
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return EFI_LOAD_ERROR;
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while (gotsz > 0) {
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*addr += ldbase;
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addr += 1;
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gotsz --;
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}
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while (relsz > 0) {
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/* apply the relocs */
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switch (ELF64_R_TYPE (swap_uint64 (rel->r_info))) {
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case R_MIPS_NONE:
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break;
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case (R_MIPS_64 << 8) | R_MIPS_REL32:
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addr = (unsigned long *)
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(ldbase + rel->r_offset);
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*addr += ldbase;
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break;
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default:
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break;
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}
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rel = (Elf64_Rel*) ((char *) rel + relent);
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relsz -= relent;
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}
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return EFI_SUCCESS;
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}
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@ -0,0 +1,164 @@
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/*
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* Copright (C) 2014 - 2015 Linaro Ltd.
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* Author: Ard Biesheuvel <ard.biesheuvel@linaro.org>
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* Copright (C) 2017 Lemote Co.
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* Author: Heiher <r@hev.cc>
|
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*
|
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* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice and this list of conditions, without modification.
|
||||
* 2. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* Alternatively, this software may be distributed under the terms of the
|
||||
* GNU General Public License as published by the Free Software Foundation;
|
||||
* either version 2 of the License, or (at your option) any later version.
|
||||
*/
|
||||
|
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#if !defined(__STDC_VERSION__) || (__STDC_VERSION__ < 199901L )
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// ANSI C 1999/2000 stdint.h integer width declarations
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typedef unsigned long uint64_t;
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typedef long int64_t;
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typedef unsigned int uint32_t;
|
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typedef int int32_t;
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typedef unsigned short uint16_t;
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typedef short int16_t;
|
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typedef unsigned char uint8_t;
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typedef signed char int8_t; // unqualified 'char' is unsigned on ARM
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#else
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#include <stdint.h>
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#endif
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|
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//
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||||
// Basic EFI types of various widths
|
||||
//
|
||||
|
||||
#ifndef __WCHAR_TYPE__
|
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# define __WCHAR_TYPE__ short
|
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#endif
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||||
|
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typedef uint64_t UINT64;
|
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typedef int64_t INT64;
|
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|
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typedef uint32_t UINT32;
|
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typedef int32_t INT32;
|
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|
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typedef uint16_t UINT16;
|
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typedef int16_t INT16;
|
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typedef uint8_t UINT8;
|
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typedef int8_t INT8;
|
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typedef __WCHAR_TYPE__ WCHAR;
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|
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#undef VOID
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#define VOID void
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typedef int64_t INTN;
|
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typedef uint64_t UINTN;
|
||||
|
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#define EFIERR(a) (0x8000000000000000 | a)
|
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#define EFI_ERROR_MASK 0x8000000000000000
|
||||
#define EFIERR_OEM(a) (0xc000000000000000 | a)
|
||||
|
||||
#define BAD_POINTER 0xFBFBFBFBFBFBFBFB
|
||||
#define MAX_ADDRESS 0xFFFFFFFFFFFFFFFF
|
||||
|
||||
#define BREAKPOINT() while (TRUE); // Make it hang on Bios[Dbg]32
|
||||
|
||||
//
|
||||
// Pointers must be aligned to these address to function
|
||||
//
|
||||
|
||||
#define MIN_ALIGNMENT_SIZE 8
|
||||
|
||||
#define ALIGN_VARIABLE(Value ,Adjustment) \
|
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(UINTN)Adjustment = 0; \
|
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if((UINTN)Value % MIN_ALIGNMENT_SIZE) \
|
||||
(UINTN)Adjustment = MIN_ALIGNMENT_SIZE - ((UINTN)Value % MIN_ALIGNMENT_SIZE); \
|
||||
Value = (UINTN)Value + (UINTN)Adjustment
|
||||
|
||||
|
||||
//
|
||||
// Define macros to build data structure signatures from characters.
|
||||
//
|
||||
|
||||
#define EFI_SIGNATURE_16(A,B) ((A) | (B<<8))
|
||||
#define EFI_SIGNATURE_32(A,B,C,D) (EFI_SIGNATURE_16(A,B) | (EFI_SIGNATURE_16(C,D) << 16))
|
||||
#define EFI_SIGNATURE_64(A,B,C,D,E,F,G,H) (EFI_SIGNATURE_32(A,B,C,D) | ((UINT64)(EFI_SIGNATURE_32(E,F,G,H)) << 32))
|
||||
|
||||
//
|
||||
// EFIAPI - prototype calling convention for EFI function pointers
|
||||
// BOOTSERVICE - prototype for implementation of a boot service interface
|
||||
// RUNTIMESERVICE - prototype for implementation of a runtime service interface
|
||||
// RUNTIMEFUNCTION - prototype for implementation of a runtime function that is not a service
|
||||
// RUNTIME_CODE - pragma macro for declaring runtime code
|
||||
//
|
||||
|
||||
#ifndef EFIAPI // Forces EFI calling conventions reguardless of compiler options
|
||||
#define EFIAPI // Substitute expresion to force C calling convention
|
||||
#endif
|
||||
|
||||
#define BOOTSERVICE
|
||||
#define RUNTIMESERVICE
|
||||
#define RUNTIMEFUNCTION
|
||||
|
||||
|
||||
#define RUNTIME_CODE(a) alloc_text("rtcode", a)
|
||||
#define BEGIN_RUNTIME_DATA() data_seg("rtdata")
|
||||
#define END_RUNTIME_DATA() data_seg("")
|
||||
|
||||
#define VOLATILE volatile
|
||||
|
||||
#define MEMORY_FENCE __sync_synchronize
|
||||
|
||||
//
|
||||
// When build similiar to FW, then link everything together as
|
||||
// one big module.
|
||||
//
|
||||
|
||||
#define EFI_DRIVER_ENTRY_POINT(InitFunction) \
|
||||
UINTN \
|
||||
InitializeDriver ( \
|
||||
VOID *ImageHandle, \
|
||||
VOID *SystemTable \
|
||||
) \
|
||||
{ \
|
||||
return InitFunction(ImageHandle, \
|
||||
SystemTable); \
|
||||
} \
|
||||
\
|
||||
EFI_STATUS efi_main( \
|
||||
EFI_HANDLE image, \
|
||||
EFI_SYSTEM_TABLE *systab \
|
||||
) __attribute__((weak, \
|
||||
alias ("InitializeDriver")));
|
||||
|
||||
#define LOAD_INTERNAL_DRIVER(_if, type, name, entry) \
|
||||
(_if)->LoadInternal(type, name, entry)
|
||||
|
||||
|
||||
//
|
||||
// Some compilers don't support the forward reference construct:
|
||||
// typedef struct XXXXX
|
||||
//
|
||||
// The following macro provide a workaround for such cases.
|
||||
|
||||
#define INTERFACE_DECL(x) struct x
|
||||
|
||||
#define uefi_call_wrapper(func, va_num, ...) func(__VA_ARGS__)
|
||||
#define EFI_FUNCTION
|
||||
|
||||
static inline UINT64 swap_uint64 (UINT64 v)
|
||||
{
|
||||
asm volatile (
|
||||
"dsbh %[v], %[v] \n\t"
|
||||
"dshd %[v], %[v] \n\t"
|
||||
:[v]"+r"(v)
|
||||
);
|
||||
|
||||
return v;
|
||||
}
|
||||
|
|
@ -0,0 +1,25 @@
|
|||
/*++
|
||||
|
||||
Copyright (c) 1998 Intel Corporation
|
||||
|
||||
Module Name:
|
||||
|
||||
efilibplat.h
|
||||
|
||||
Abstract:
|
||||
|
||||
EFI to compile bindings
|
||||
|
||||
|
||||
|
||||
|
||||
Revision History
|
||||
|
||||
--*/
|
||||
|
||||
VOID
|
||||
InitializeLibPlatform (
|
||||
IN EFI_HANDLE ImageHandle,
|
||||
IN EFI_SYSTEM_TABLE *SystemTable
|
||||
);
|
||||
|
||||
|
|
@ -0,0 +1,34 @@
|
|||
#ifndef GNU_EFI_MIPS64EL_SETJMP_H
|
||||
#define GNU_EFI_MIPS64EL_SETJMP_H
|
||||
|
||||
#define JMPBUF_ALIGN 8
|
||||
|
||||
typedef struct {
|
||||
/* GP regs */
|
||||
UINT64 RA;
|
||||
UINT64 SP;
|
||||
UINT64 FP;
|
||||
UINT64 GP;
|
||||
UINT64 S0;
|
||||
UINT64 S1;
|
||||
UINT64 S2;
|
||||
UINT64 S3;
|
||||
UINT64 S4;
|
||||
UINT64 S5;
|
||||
UINT64 S6;
|
||||
UINT64 S7;
|
||||
|
||||
#ifdef __mips_hard_float
|
||||
/* FP regs */
|
||||
UINT64 F24;
|
||||
UINT64 F25;
|
||||
UINT64 F26;
|
||||
UINT64 F27;
|
||||
UINT64 F28;
|
||||
UINT64 F29;
|
||||
UINT64 F30;
|
||||
UINT64 F31;
|
||||
#endif
|
||||
} ALIGN(JMPBUF_ALIGN) jmp_buf;
|
||||
|
||||
#endif /* GNU_EFI_MIPS64EL_SETJMP_H */
|
||||
|
|
@ -64,7 +64,7 @@ endif
|
|||
|
||||
OBJS = $(FILES:%=%.o)
|
||||
|
||||
SUBDIRS = ia32 x86_64 ia64 aarch64 arm runtime
|
||||
SUBDIRS = ia32 x86_64 ia64 aarch64 arm mips64el runtime
|
||||
|
||||
LIBDIRINSTALL = $(INSTALLROOT)$(LIBDIR)
|
||||
|
||||
|
|
|
|||
|
|
@ -0,0 +1 @@
|
|||
/* This stub is a stub to make the build happy */
|
||||
|
|
@ -0,0 +1,51 @@
|
|||
/*
|
||||
* Copright (C) 2014 Linaro Ltd.
|
||||
* Author: Ard Biesheuvel <ard.biesheuvel@linaro.org>
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice and this list of conditions, without modification.
|
||||
* 2. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* Alternatively, this software may be distributed under the terms of the
|
||||
* GNU General Public License as published by the Free Software Foundation;
|
||||
* either version 2 of the License, or (at your option) any later version.
|
||||
*/
|
||||
|
||||
#include "lib.h"
|
||||
|
||||
VOID
|
||||
InitializeLibPlatform (
|
||||
IN EFI_HANDLE ImageHandle EFI_UNUSED,
|
||||
IN EFI_SYSTEM_TABLE *SystemTable EFI_UNUSED
|
||||
)
|
||||
{
|
||||
}
|
||||
|
||||
/*
|
||||
* Calls to these functions may be emitted implicitly by GCC even when
|
||||
* -ffreestanding is in effect.
|
||||
*/
|
||||
void *memset(void *s, int c, __SIZE_TYPE__ n)
|
||||
{
|
||||
unsigned char *p = s;
|
||||
|
||||
while (n--)
|
||||
*p++ = c;
|
||||
|
||||
return s;
|
||||
}
|
||||
|
||||
void *memcpy(void *dest, const void *src, __SIZE_TYPE__ n)
|
||||
{
|
||||
const unsigned char *q = src;
|
||||
unsigned char *p = dest;
|
||||
|
||||
while (n--)
|
||||
*p++ = *q++;
|
||||
|
||||
return dest;
|
||||
}
|
||||
|
|
@ -0,0 +1,63 @@
|
|||
/*
|
||||
* Copright (C) 2014 Linaro Ltd.
|
||||
* Author: Ard Biesheuvel <ard.biesheuvel@linaro.org>
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice and this list of conditions, without modification.
|
||||
* 2. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* Alternatively, this software may be distributed under the terms of the
|
||||
* GNU General Public License as published by the Free Software Foundation;
|
||||
* either version 2 of the License, or (at your option) any later version.
|
||||
*/
|
||||
|
||||
#include "lib.h"
|
||||
|
||||
UINT64
|
||||
LShiftU64 (
|
||||
IN UINT64 Operand,
|
||||
IN UINTN Count
|
||||
)
|
||||
// Left shift 64bit by 32bit and get a 64bit result
|
||||
{
|
||||
return Operand << Count;
|
||||
}
|
||||
|
||||
UINT64
|
||||
RShiftU64 (
|
||||
IN UINT64 Operand,
|
||||
IN UINTN Count
|
||||
)
|
||||
// Right shift 64bit by 32bit and get a 64bit result
|
||||
{
|
||||
return Operand >> Count;
|
||||
}
|
||||
|
||||
|
||||
UINT64
|
||||
MultU64x32 (
|
||||
IN UINT64 Multiplicand,
|
||||
IN UINTN Multiplier
|
||||
)
|
||||
// Multiple 64bit by 32bit and get a 64bit result
|
||||
{
|
||||
return Multiplicand * Multiplier;
|
||||
}
|
||||
|
||||
UINT64
|
||||
DivU64x32 (
|
||||
IN UINT64 Dividend,
|
||||
IN UINTN Divisor,
|
||||
OUT UINTN *Remainder OPTIONAL
|
||||
)
|
||||
// divide 64bit by 32bit and get a 64bit result
|
||||
// N.B. only works for 31bit divisors!!
|
||||
{
|
||||
if (Remainder)
|
||||
*Remainder = Dividend % Divisor;
|
||||
return Dividend / Divisor;
|
||||
}
|
||||
|
|
@ -0,0 +1,92 @@
|
|||
/*
|
||||
* Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.
|
||||
* Copright (c) 2017 Lemote Co.
|
||||
* Author: Heiher <r@hev.cc>
|
||||
*
|
||||
* This program and the accompanying materials are licensed and made
|
||||
available
|
||||
* under the terms and conditions of the BSD License which accompanies
|
||||
this
|
||||
* distribution. The full text of the license may be found at
|
||||
* http://opensource.org/licenses/bsd-license.php.
|
||||
*
|
||||
* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
|
||||
BASIS,
|
||||
* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR
|
||||
* IMPLIED.
|
||||
*/
|
||||
.text
|
||||
.p2align 3
|
||||
|
||||
.globl setjmp
|
||||
.type setjmp, @function
|
||||
setjmp:
|
||||
sd $ra, 0x00($a0)
|
||||
sd $sp, 0x08($a0)
|
||||
sd $fp, 0x10($a0)
|
||||
sd $gp, 0x18($a0)
|
||||
|
||||
sd $s0, 0x20($a0)
|
||||
sd $s1, 0x28($a0)
|
||||
sd $s2, 0x30($a0)
|
||||
sd $s3, 0x38($a0)
|
||||
sd $s4, 0x40($a0)
|
||||
sd $s5, 0x48($a0)
|
||||
sd $s6, 0x50($a0)
|
||||
sd $s7, 0x58($a0)
|
||||
|
||||
#ifdef __mips_hard_float
|
||||
mfc0 $v0, $12
|
||||
ext $v0, $v0, 29, 1
|
||||
beqz $v0, 1f
|
||||
|
||||
s.d $f24, 0x60($a0)
|
||||
s.d $f25, 0x68($a0)
|
||||
s.d $f26, 0x70($a0)
|
||||
s.d $f27, 0x78($a0)
|
||||
s.d $f28, 0x80($a0)
|
||||
s.d $f29, 0x88($a0)
|
||||
s.d $f30, 0x90($a0)
|
||||
s.d $f31, 0x98($a0)
|
||||
|
||||
1:
|
||||
#endif
|
||||
move $v0, $zero
|
||||
jr $ra
|
||||
|
||||
.globl longjmp
|
||||
.type longjmp, @function
|
||||
longjmp:
|
||||
ld $ra, 0x00($a0)
|
||||
ld $sp, 0x08($a0)
|
||||
ld $fp, 0x10($a0)
|
||||
ld $gp, 0x18($a0)
|
||||
|
||||
ld $s0, 0x20($a0)
|
||||
ld $s1, 0x28($a0)
|
||||
ld $s2, 0x30($a0)
|
||||
ld $s3, 0x38($a0)
|
||||
ld $s4, 0x40($a0)
|
||||
ld $s5, 0x48($a0)
|
||||
ld $s6, 0x50($a0)
|
||||
ld $s7, 0x58($a0)
|
||||
|
||||
#ifdef __mips_hard_float
|
||||
mfc0 $v0, $12
|
||||
ext $v0, $v0, 29, 1
|
||||
beqz $v0, 1f
|
||||
|
||||
l.d $f24, 0x60($a0)
|
||||
l.d $f25, 0x68($a0)
|
||||
l.d $f26, 0x70($a0)
|
||||
l.d $f27, 0x78($a0)
|
||||
l.d $f28, 0x80($a0)
|
||||
l.d $f29, 0x88($a0)
|
||||
l.d $f30, 0x90($a0)
|
||||
l.d $f31, 0x98($a0)
|
||||
|
||||
1:
|
||||
#endif
|
||||
li $v0, 1
|
||||
movn $v0, $a1, $a1
|
||||
jr $ra
|
||||
Loading…
Reference in New Issue