patrick/Sylva
1
1
Fork 0
Code Issues 2 Pull Requests Actions Packages Projects 1 Releases Wiki Activity

[chore] Use gnu-efi as a part of project

Browse Source
This commit is contained in:
pyao12
2026-05-29 19:06:37 +08:00
Unverified
parent 990c2a6295
commit d31cd01771
94 changed files with 22988 additions and 33 deletions
Download Patch File Download Diff File Expand all files Collapse all files
efi/gnuefi/crt0-efi-x86_64.S
+81
View File
@@ -0,0 +1,81 @@
/* crt0-efi-x86_64.S - x86_64 EFI startup code.
Copyright (C) 1999 Hewlett-Packard Co.
Contributed by David Mosberger <davidm@hpl.hp.com>.
Copyright (C) 2005 Intel Co.
Contributed by Fenghua Yu <fenghua.yu@intel.com>.
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following
disclaimer in the documentation and/or other materials
provided with the distribution.
* Neither the name of Hewlett-Packard Co. nor the names of its
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
CONTRIBUTORS "AS IS" AND ANY EXPRESS 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 OWNER OR CONTRIBUTORS
BE LIABLE FOR ANYDIRECT, 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.
*/
.text
.align 4
.globl _start
.type _start,%function
_start:
subq $8, %rsp
pushq %rcx
pushq %rdx
0:
lea ImageBase(%rip), %rdi
lea _DYNAMIC(%rip), %rsi
popq %rcx
popq %rdx
pushq %rcx
pushq %rdx
call _relocate
popq %rdi
popq %rsi
call _entry
addq $8, %rsp
.L_exit:
ret
// hand-craft a dummy .reloc section so EFI knows it's a relocatable executable:
.data
dummy0: .4byte 0
dummy1: .4byte 0
#define IMAGE_REL_ABSOLUTE 0
.section .reloc, "a", %progbits
.4byte dummy1 - dummy0 // Page RVA
.4byte 12 // Block Size (2*4+2*2), must be aligned by 32 Bits
.2byte (IMAGE_REL_ABSOLUTE<<12) + 0 // reloc for dummy
.2byte (IMAGE_REL_ABSOLUTE<<12) + 0 // reloc for dummy
#if defined(__ELF__) && defined(__linux__)
.section .note.GNU-stack,"",%progbits
#endif
efi/gnuefi/elf_x86_64_efi.lds
+114
View File
@@ -0,0 +1,114 @@
/* Same as elf_x86_64_fbsd_efi.lds, except for OUTPUT_FORMAT below - KEEP IN SYNC */
OUTPUT_FORMAT("elf64-x86-64", "elf64-x86-64", "elf64-x86-64")
OUTPUT_ARCH(i386:x86-64)
ENTRY(_start)
SECTIONS
{
. = 0;
ImageBase = .;
/* .hash and/or .gnu.hash MUST come first! */
.hash : { *(.hash) }
.gnu.hash : { *(.gnu.hash) }
. = ALIGN(4096);
.eh_frame : { *(.eh_frame) }
.eh_frame_hdr : { *(.eh_frame_hdr) }
.gcc_except_table : { *(.gcc_except_table*) }
. = ALIGN(4096);
.text :
{
_text = .;
*(.text)
*(.text.*)
*(.gnu.linkonce.t.*)
*(.plt)
. = ALIGN(16);
}
_etext = .;
_text_size = _etext - _text;
. = ALIGN(4096);
.data :
{
_data = .;
*(.got.plt)
*(.got)
*(.data*)
*(.sdata)
/*
* Note that these aren't the using the GNU "CONSTRUCTOR" output section
* command, so they don't start with a size. Because of p2align and the
* end/END definitions, and the fact that they're mergeable, they can also
* have NULLs which aren't guaranteed to be at the end.
*/
. = ALIGN(16);
__init_array_start = .;
*(SORT(.init_array.*))
*(.init_array)
__init_array_end = .;
. = ALIGN(16);
__CTOR_LIST__ = .;
*(SORT(.ctors.*))
*(.ctors)
__CTOR_END__ = .;
. = ALIGN(16);
__DTOR_LIST__ = .;
*(SORT(.dtors.*))
*(.dtors)
__DTOR_END__ = .;
. = ALIGN(16);
__fini_array_start = .;
*(SORT(.fini_array.*))
*(.fini_array)
__fini_array_end = .;
/* the EFI loader doesn't seem to like a .bss section, so we stick
it all into .data: */
*(.sbss)
*(.scommon)
*(.dynbss)
*(.bss*)
*(COMMON)
*(.rel.local)
}
.note.gnu.build-id : { *(.note.gnu.build-id) }
_edata = .;
_data_size = _edata - _etext;
. = ALIGN(4096);
.reloc :
{
KEEP (*(.reloc))
}
. = ALIGN(4096);
_DYNAMIC = .;
.dynamic : { *(.dynamic) }
. = ALIGN(4096);
.rela :
{
*(.rela.text*)
*(.rela.data*)
*(.rela.got)
*(.rela.dyn)
*(.rela.stab)
*(.rela.init_array*)
*(.rela.fini_array*)
*(.rela.ctors*)
*(.rela.dtors*)
}
. = ALIGN(4096);
.rela.plt : { *(.rela.plt) }
. = ALIGN(4096);
.rodata : { *(.rodata*) }
. = ALIGN(4096);
.dynsym : { *(.dynsym) }
. = ALIGN(4096);
.dynstr : { *(.dynstr) }
. = ALIGN(4096);
.ignored.reloc :
{
*(.rela.reloc)
*(.note.GNU-stack)
}
.comment 0 : { *(.comment) }
}
efi/gnuefi/reloc_x86_64.c
+98
View File
@@ -0,0 +1,98 @@
/* reloc_x86_64.c - position independent x86_64 ELF shared object relocator
Copyright (C) 1999 Hewlett-Packard Co.
Contributed by David Mosberger <davidm@hpl.hp.com>.
Copyright (C) 2005 Intel Co.
Contributed by Fenghua Yu <fenghua.yu@intel.com>.
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following
disclaimer in the documentation and/or other materials
provided with the distribution.
* Neither the name of Hewlett-Packard Co. nor the names of its
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
CONTRIBUTORS "AS IS" AND ANY EXPRESS 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 OWNER OR CONTRIBUTORS
BE LIABLE FOR ANYDIRECT, 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.
*/
#include <efi.h>
#include <efilib.h>
#include "subst/elf.h"
EFI_STATUS _relocate (long ldbase, Elf64_Dyn *dyn,
EFI_HANDLE image EFI_UNUSED,
EFI_SYSTEM_TABLE *systab EFI_UNUSED)
{
long relsz = 0, relent = 0;
Elf64_Rela *rel = 0;
unsigned long *addr;
int i;
for (i = 0; dyn[i].d_tag != DT_NULL; ++i) {
switch (dyn[i].d_tag) {
case DT_RELA:
rel = (Elf64_Rela*)
((unsigned long)dyn[i].d_un.d_ptr
+ ldbase);
break;
case DT_RELASZ:
relsz = dyn[i].d_un.d_val;
break;
case DT_RELAENT:
relent = dyn[i].d_un.d_val;
break;
default:
break;
}
}
if (!rel && relent == 0)
return EFI_SUCCESS;
if (!rel || relent == 0)
return EFI_LOAD_ERROR;
while (relsz > 0) {
/* apply the relocs */
switch (ELF64_R_TYPE (rel->r_info)) {
case R_X86_64_NONE:
break;
case R_X86_64_RELATIVE:
addr = (unsigned long *)
(ldbase + rel->r_offset);
*addr = ldbase + rel->r_addend;
break;
default:
break;
}
rel = (Elf64_Rela*) ((char *) rel + relent);
relsz -= relent;
}
return EFI_SUCCESS;
}