automake commit without merge history
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BVK Chaitanya
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265d68cd10
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8c41176882
810 changed files with 4980 additions and 2508 deletions
119
grub-core/kern/x86_64/dl.c
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119
grub-core/kern/x86_64/dl.c
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/* dl-x86_64.c - arch-dependent part of loadable module support */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2002,2005,2007,2009 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <grub/dl.h>
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#include <grub/elf.h>
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#include <grub/misc.h>
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#include <grub/err.h>
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/* Check if EHDR is a valid ELF header. */
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grub_err_t
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grub_arch_dl_check_header (void *ehdr)
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{
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Elf64_Ehdr *e = ehdr;
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/* Check the magic numbers. */
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if (e->e_ident[EI_CLASS] != ELFCLASS64
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|| e->e_ident[EI_DATA] != ELFDATA2LSB
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|| e->e_machine != EM_X86_64)
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return grub_error (GRUB_ERR_BAD_OS, "invalid arch specific ELF magic");
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return GRUB_ERR_NONE;
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}
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/* Relocate symbols. */
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grub_err_t
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grub_arch_dl_relocate_symbols (grub_dl_t mod, void *ehdr)
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{
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Elf64_Ehdr *e = ehdr;
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Elf64_Shdr *s;
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Elf64_Word entsize;
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unsigned i;
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/* Find a symbol table. */
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for (i = 0, s = (Elf64_Shdr *) ((char *) e + e->e_shoff);
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i < e->e_shnum;
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i++, s = (Elf64_Shdr *) ((char *) s + e->e_shentsize))
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if (s->sh_type == SHT_SYMTAB)
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break;
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if (i == e->e_shnum)
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return grub_error (GRUB_ERR_BAD_MODULE, "no symtab found");
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entsize = s->sh_entsize;
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for (i = 0, s = (Elf64_Shdr *) ((char *) e + e->e_shoff);
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i < e->e_shnum;
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i++, s = (Elf64_Shdr *) ((char *) s + e->e_shentsize))
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if (s->sh_type == SHT_RELA)
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{
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grub_dl_segment_t seg;
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/* Find the target segment. */
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for (seg = mod->segment; seg; seg = seg->next)
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if (seg->section == s->sh_info)
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break;
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if (seg)
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{
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Elf64_Rela *rel, *max;
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for (rel = (Elf64_Rela *) ((char *) e + s->sh_offset),
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max = rel + s->sh_size / s->sh_entsize;
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rel < max;
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rel++)
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{
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Elf64_Word *addr32;
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Elf64_Xword *addr64;
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Elf64_Sym *sym;
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if (seg->size < rel->r_offset)
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return grub_error (GRUB_ERR_BAD_MODULE,
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"reloc offset is out of the segment");
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addr32 = (Elf64_Word *) ((char *) seg->addr + rel->r_offset);
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addr64 = (Elf64_Xword *) addr32;
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sym = (Elf64_Sym *) ((char *) mod->symtab
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+ entsize * ELF_R_SYM (rel->r_info));
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switch (ELF_R_TYPE (rel->r_info))
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{
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case R_X86_64_64:
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*addr64 += rel->r_addend + sym->st_value;
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break;
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case R_X86_64_PC32:
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*addr32 += rel->r_addend + sym->st_value -
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(Elf64_Xword) seg->addr - rel->r_offset;
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break;
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case R_X86_64_32:
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case R_X86_64_32S:
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*addr32 += rel->r_addend + sym->st_value;
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break;
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default:
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grub_fatal ("Unrecognized relocation: %d\n", ELF_R_TYPE (rel->r_info));
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}
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}
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}
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}
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return GRUB_ERR_NONE;
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}
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116
grub-core/kern/x86_64/efi/callwrap.S
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116
grub-core/kern/x86_64/efi/callwrap.S
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@ -0,0 +1,116 @@
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/* callwrap.S - wrapper for x86_64 efi calls */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2006,2007,2009 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#include <grub/symbol.h>
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#include <grub/boot.h>
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/*
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* x86_64 uses registry to pass parameters. Unfortunately, gcc and efi use
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* different call conversion, so we need to do some conversion.
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*
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* gcc:
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* %rdi, %esi, %rdx, %rcx, %r8, %r9, 8(%rsp), 16(%rsp), ...
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*
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* efi:
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* %rcx, %rdx, %r8, %r9, 32(%rsp), 40(%rsp), 48(%rsp), ...
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*
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*/
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.file "callwrap.S"
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.text
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FUNCTION(efi_wrap_0)
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subq $40, %rsp
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call *%rdi
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addq $40, %rsp
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ret
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FUNCTION(efi_wrap_1)
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subq $40, %rsp
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mov %rsi, %rcx
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call *%rdi
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addq $40, %rsp
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ret
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FUNCTION(efi_wrap_2)
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subq $40, %rsp
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mov %rsi, %rcx
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call *%rdi
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addq $40, %rsp
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ret
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FUNCTION(efi_wrap_3)
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subq $40, %rsp
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mov %rcx, %r8
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mov %rsi, %rcx
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call *%rdi
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addq $40, %rsp
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ret
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FUNCTION(efi_wrap_4)
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subq $40, %rsp
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mov %r8, %r9
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mov %rcx, %r8
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mov %rsi, %rcx
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call *%rdi
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addq $40, %rsp
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ret
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FUNCTION(efi_wrap_5)
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subq $40, %rsp
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mov %r9, 32(%rsp)
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mov %r8, %r9
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mov %rcx, %r8
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mov %rsi, %rcx
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call *%rdi
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addq $40, %rsp
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ret
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FUNCTION(efi_wrap_6)
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subq $56, %rsp
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mov 56+8(%rsp), %rax
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mov %rax, 40(%rsp)
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mov %r9, 32(%rsp)
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mov %r8, %r9
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mov %rcx, %r8
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mov %rsi, %rcx
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call *%rdi
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addq $56, %rsp
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ret
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FUNCTION(efi_wrap_10)
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subq $88, %rsp
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mov 88+40(%rsp), %rax
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mov %rax, 72(%rsp)
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mov 88+32(%rsp), %rax
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mov %rax, 64(%rsp)
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mov 88+24(%rsp), %rax
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mov %rax, 56(%rsp)
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mov 88+16(%rsp), %rax
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mov %rax, 48(%rsp)
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mov 88+8(%rsp), %rax
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mov %rax, 40(%rsp)
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mov %r9, 32(%rsp)
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mov %r8, %r9
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mov %rcx, %r8
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mov %rsi, %rcx
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call *%rdi
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addq $88, %rsp
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ret
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63
grub-core/kern/x86_64/efi/startup.S
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63
grub-core/kern/x86_64/efi/startup.S
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@ -0,0 +1,63 @@
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/* startup.S - bootstrap GRUB itself */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2006,2007,2009 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#include <grub/symbol.h>
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#include <grub/boot.h>
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.file "startup.S"
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.text
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.globl start, _start
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.code64
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start:
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_start:
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jmp codestart
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/*
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* Compatibility version number
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*
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* These MUST be at byte offset 6 and 7 of the executable
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* DO NOT MOVE !!!
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*/
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. = _start + 0x6
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.byte GRUB_BOOT_VERSION_MAJOR, GRUB_BOOT_VERSION_MINOR
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/*
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* This is a special data area 8 bytes from the beginning.
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*/
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. = _start + 0x8
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VARIABLE(grub_prefix)
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/* to be filled by grub-mkimage */
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/*
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* Leave some breathing room for the prefix.
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*/
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. = _start + 0x50
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codestart:
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movq %rcx, EXT_C(grub_efi_image_handle)(%rip)
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movq %rdx, EXT_C(grub_efi_system_table)(%rip)
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call EXT_C(grub_main)
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ret
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