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Remove spurious diff with master

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This commit is contained in:
Vladimir Serbinenko committed 2017-05-08 16:47:51 +02:00
2 parents 9f8f747605 d9f7de0ae3
commit 3e6d59d7cb
185 files changed
+3390 -1300
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grub-core/lib/i386/relocator64.S
+21
View File
@@ -73,6 +73,22 @@ VARIABLE(grub_relocator64_rsp)
movq %rax, %rsp
#ifdef GRUB_MACHINE_EFI
jmp LOCAL(skip_efi_stack_align)
/*
* Here is grub_relocator64_efi_start() entry point. Most of the
* code below is shared between grub_relocator64_efi_start()
* and grub_relocator64_start().
*
* Think twice before changing anything there!!!
*/
VARIABLE(grub_relocator64_efi_start)
/* Align the stack as UEFI spec requires. */
andq $~15, %rsp
LOCAL(skip_efi_stack_align):
#endif
/* mov imm64, %rax */
.byte 0x48
.byte 0xb8
@@ -120,6 +136,11 @@ LOCAL(jump_addr):
VARIABLE(grub_relocator64_rip)
.quad 0
#ifdef GRUB_MACHINE_EFI
/* Here grub_relocator64_efi_start() ends. Ufff... */
VARIABLE(grub_relocator64_efi_end)
#endif
#ifndef __x86_64__
.p2align 4
LOCAL(gdt):
grub-core/lib/i386/xen/relocator.S
+52 -37
View File
@@ -16,6 +16,8 @@
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/i386/memory.h>
#include <grub/i386/types.h>
#include <grub/symbol.h>
#include <grub/xen.h>
@@ -23,78 +25,86 @@
VARIABLE(grub_relocator_xen_remap_start)
LOCAL(base):
/* mov imm32, %ebx */
/* Remap the remapper to it's new address. */
/* mov imm32, %ebx - %ebx: new virtual address of remapper */
.byte 0xbb
VARIABLE(grub_relocator_xen_remapper_virt)
.long 0
/* mov imm32, %ecx */
/* mov imm32, %ecx - %ecx: low part of page table entry */
.byte 0xb9
VARIABLE(grub_relocator_xen_remapper_map)
.long 0
/* mov imm32, %edx */
/* mov imm32, %edx - %edx: high part of page table entry */
.byte 0xba
VARIABLE(grub_relocator_xen_remapper_map_high)
.long 0
movl %ebx, %ebp
movl %ebx, %ebp /* %ebx is clobbered by hypercall */
movl $2, %esi
movl $UVMF_INVLPG, %esi /* esi: flags (inv. single entry) */
movl $__HYPERVISOR_update_va_mapping, %eax
int $0x82
movl %ebp, %ebx
addl $(LOCAL(cont) - LOCAL(base)), %ebx
jmp *%ebx
jmp *%ebx /* Continue with new virtual address */
LOCAL(cont):
xorl %eax, %eax
movl %eax, %ebp
/* Modify mappings of new page tables to be read-only. */
/* mov imm32, %eax */
.byte 0xb8
VARIABLE(grub_relocator_xen_paging_areas_addr)
.long 0
movl %eax, %ebx
1:
movl 0(%ebx), %ebp /* Get start pfn of the current area */
movl GRUB_TARGET_SIZEOF_LONG(%ebx), %ecx /* Get # of pg tables */
testl %ecx, %ecx /* 0 -> last area reached */
jz 3f
addl $(2 * GRUB_TARGET_SIZEOF_LONG), %ebx
movl %ebx, %esp /* Save current area pointer */
2:
movl %ecx, %edi
/* mov imm32, %eax */
.byte 0xb8
VARIABLE(grub_relocator_xen_mfn_list)
.long 0
movl %eax, %edi
movl %ebp, %eax
movl 0(%edi, %eax, 4), %ecx
/* mov imm32, %ebx */
.byte 0xbb
VARIABLE(grub_relocator_xen_paging_start)
.long 0
shll $12, %eax
addl %eax, %ebx
movl 0(%eax, %ebp, 4), %ecx /* mfn */
movl %ebp, %ebx
shll $PAGE_SHIFT, %ebx /* virtual address (1:1 mapping) */
movl %ecx, %edx
shll $12, %ecx
shrl $20, %edx
orl $5, %ecx
movl $2, %esi
shll $PAGE_SHIFT, %ecx /* prepare pte low part */
shrl $(32 - PAGE_SHIFT), %edx /* pte high part */
orl $(GRUB_PAGE_PRESENT | GRUB_PAGE_USER), %ecx /* pte low */
movl $UVMF_INVLPG, %esi
movl $__HYPERVISOR_update_va_mapping, %eax
int $0x82
int $0x82 /* parameters: eax, ebx, ecx, edx, esi */
incl %ebp
/* mov imm32, %ecx */
.byte 0xb9
VARIABLE(grub_relocator_xen_paging_size)
.long 0
cmpl %ebp, %ecx
incl %ebp /* next pfn */
movl %edi, %ecx
ja 1b
loop 2b
mov %esp, %ebx /* restore area poniter */
jmp 1b
3:
/* Switch page tables: pin new L3 pt, load cr3, unpin old L3. */
/* mov imm32, %ebx */
.byte 0xbb
VARIABLE(grub_relocator_xen_mmu_op_addr)
.long 0
movl $3, %ecx
movl $0, %edx
movl $0x7FF0, %esi
movl $3, %ecx /* 3 mmu ops */
movl $0, %edx /* pdone (not used) */
movl $DOMID_SELF, %esi
movl $__HYPERVISOR_mmuext_op, %eax
int $0x82
/* Continue in virtual kernel mapping. */
/* mov imm32, %eax */
.byte 0xb8
VARIABLE(grub_relocator_xen_remap_continue)
@@ -102,6 +112,9 @@ VARIABLE(grub_relocator_xen_remap_continue)
jmp *%eax
VARIABLE(grub_relocator_xen_paging_areas)
.long 0, 0, 0, 0, 0, 0, 0, 0
VARIABLE(grub_relocator_xen_mmu_op)
.space 256
@@ -109,21 +122,22 @@ VARIABLE(grub_relocator_xen_remap_end)
VARIABLE(grub_relocator_xen_start)
/* Unmap old remapper area. */
/* mov imm32, %eax */
.byte 0xb8
VARIABLE(grub_relocator_xen_remapper_virt2)
.long 0
movl %eax, %edi
movl %eax, %ebx
xorl %ecx, %ecx
xorl %ecx, %ecx /* Invalid pte */
xorl %edx, %edx
movl $2, %esi
movl $UVMF_INVLPG, %esi
movl $__HYPERVISOR_update_va_mapping, %eax
int $0x82
/* Prepare registers for starting kernel. */
/* mov imm32, %eax */
.byte 0xb8
VARIABLE(grub_relocator_xen_stack)
@@ -145,6 +159,7 @@ VARIABLE(grub_relocator_xen_start_info)
VARIABLE(grub_relocator_xen_entry_point)
.long 0
/* Now start the new kernel. */
jmp *%eax
VARIABLE(grub_relocator_xen_end)
grub-core/lib/x86_64/efi/relocator.c
+80
View File
@@ -0,0 +1,80 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2009 Free Software Foundation, Inc.
* Copyright (C) 2016 Oracle and/or its affiliates. All rights reserved.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/mm.h>
#include <grub/misc.h>
#include <grub/types.h>
#include <grub/err.h>
#include <grub/i386/relocator.h>
#include <grub/relocator_private.h>
extern grub_uint64_t grub_relocator64_rax;
extern grub_uint64_t grub_relocator64_rbx;
extern grub_uint64_t grub_relocator64_rcx;
extern grub_uint64_t grub_relocator64_rdx;
extern grub_uint64_t grub_relocator64_rip;
extern grub_uint64_t grub_relocator64_rsi;
extern grub_uint8_t grub_relocator64_efi_start;
extern grub_uint8_t grub_relocator64_efi_end;
#define RELOCATOR_SIZEOF(x) (&grub_relocator##x##_end - &grub_relocator##x##_start)
grub_err_t
grub_relocator64_efi_boot (struct grub_relocator *rel,
struct grub_relocator64_efi_state state)
{
grub_err_t err;
void *relst;
grub_relocator_chunk_t ch;
/*
* 64-bit relocator code may live above 4 GiB quite well.
* However, I do not want ask for problems. Just in case.
*/
err = grub_relocator_alloc_chunk_align (rel, &ch, 0,
0x100000000 - RELOCATOR_SIZEOF (64_efi),
RELOCATOR_SIZEOF (64_efi), 16,
GRUB_RELOCATOR_PREFERENCE_NONE, 1);
if (err)
return err;
/* Do not touch %rsp! It points to EFI created stack. */
grub_relocator64_rax = state.rax;
grub_relocator64_rbx = state.rbx;
grub_relocator64_rcx = state.rcx;
grub_relocator64_rdx = state.rdx;
grub_relocator64_rip = state.rip;
grub_relocator64_rsi = state.rsi;
grub_memmove (get_virtual_current_address (ch), &grub_relocator64_efi_start,
RELOCATOR_SIZEOF (64_efi));
err = grub_relocator_prepare_relocs (rel, get_physical_target_address (ch),
&relst, NULL);
if (err)
return err;
((void (*) (void)) relst) ();
/* Not reached. */
return GRUB_ERR_NONE;
}
grub-core/lib/x86_64/xen/relocator.S
+55 -79
View File
@@ -16,95 +16,85 @@
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/x86_64/memory.h>
#include <grub/x86_64/types.h>
#include <grub/symbol.h>
#include <grub/xen.h>
/* Macro to load an imm64 value stored by the C-part into %rax: */
#define MOV_IMM64_RAX(var) .byte 0x48, 0xb8; VARIABLE(var); .quad 0
.p2align 4 /* force 16-byte alignment */
VARIABLE(grub_relocator_xen_remap_start)
LOCAL(base):
/* mov imm64, %rax */
.byte 0x48
.byte 0xb8
VARIABLE(grub_relocator_xen_remapper_virt)
.quad 0
/* Remap the remapper to it's new address. */
MOV_IMM64_RAX(grub_relocator_xen_remapper_virt)
movq %rax, %rdi
movq %rax, %rbx
movq %rax, %rdi /* %rdi: new virtual address of remapper */
movq %rax, %rbx /* Remember new virtual address */
/* mov imm64, %rax */
.byte 0x48
.byte 0xb8
VARIABLE(grub_relocator_xen_remapper_map)
.quad 0
MOV_IMM64_RAX(grub_relocator_xen_remapper_map)
movq %rax, %rsi
movq %rax, %rsi /* %rsi: page table entry */
movq $2, %rdx
movq $UVMF_INVLPG, %rdx /* %rdx: flags (inv. single entry) */
movq $__HYPERVISOR_update_va_mapping, %rax
syscall
syscall /* Do the remap operation */
addq $(LOCAL(cont) - LOCAL(base)), %rbx
jmp *%rbx
jmp *%rbx /* Continue with new virtual address */
LOCAL(cont):
/* mov imm64, %rcx */
.byte 0x48
.byte 0xb9
VARIABLE(grub_relocator_xen_paging_size)
.quad 0
/* Modify mappings of new page tables to be read-only. */
MOV_IMM64_RAX(grub_relocator_xen_mfn_list)
/* mov imm64, %rax */
.byte 0x48
.byte 0xb8
VARIABLE(grub_relocator_xen_paging_start)
.quad 0
movq %rax, %rbx /* %rbx is the base of the p2m list */
leaq EXT_C(grub_relocator_xen_paging_areas) (%rip), %r8
movq %rax, %r12
/* mov imm64, %rax */
.byte 0x48
.byte 0xb8
VARIABLE(grub_relocator_xen_mfn_list)
.quad 0
movq %rax, %rsi
1:
movq 0(%r8), %r12 /* Get start pfn of the current area */
movq GRUB_TARGET_SIZEOF_LONG(%r8), %rcx /* Get # of pg tables */
testq %rcx, %rcx /* 0 -> last area reached */
jz 3f
2:
movq %r12, %rdi
movq %rsi, %rbx
movq 0(%rsi), %rsi
shlq $12, %rsi
orq $5, %rsi
movq $2, %rdx
movq %rcx, %r9
shlq $PAGE_SHIFT, %rdi /* virtual address (1:1 mapping) */
movq (%rbx, %r12, 8), %rsi /* mfn */
shlq $PAGE_SHIFT, %rsi
orq $(GRUB_PAGE_PRESENT | GRUB_PAGE_USER), %rsi /* Build pte */
movq $UVMF_INVLPG, %rdx
movq %rcx, %r9 /* %rcx clobbered by hypercall */
movq $__HYPERVISOR_update_va_mapping, %rax
syscall
movq %r9, %rcx
addq $8, %rbx
addq $4096, %r12
movq %rbx, %rsi
incq %r12 /* next pfn */
loop 1b
loop 2b
leaq LOCAL(mmu_op) (%rip), %rdi
movq $3, %rsi
movq $0, %rdx
movq $0x7FF0, %r10
addq $(2 * GRUB_TARGET_SIZEOF_LONG), %r8 /* next pg table area */
jmp 1b
3:
/* Switch page tables: pin new L4 pt, load cr3, unpin old L4. */
leaq EXT_C(grub_relocator_xen_mmu_op) (%rip), %rdi
movq $3, %rsi /* 3 mmu ops */
movq $0, %rdx /* pdone (not used) */
movq $DOMID_SELF, %r10
movq $__HYPERVISOR_mmuext_op, %rax
syscall
/* mov imm64, %rax */
.byte 0x48
.byte 0xb8
VARIABLE(grub_relocator_xen_remap_continue)
.quad 0
/* Continue in virtual kernel mapping. */
MOV_IMM64_RAX(grub_relocator_xen_remap_continue)
jmp *%rax
LOCAL(mmu_op):
VARIABLE(grub_relocator_xen_paging_areas)
/* array of start, size pairs, size 0 is end marker */
.quad 0, 0, 0, 0, 0, 0, 0, 0
VARIABLE(grub_relocator_xen_mmu_op)
.space 256
@@ -112,46 +102,32 @@ VARIABLE(grub_relocator_xen_remap_end)
VARIABLE(grub_relocator_xen_start)
/* mov imm64, %rax */
.byte 0x48
.byte 0xb8
VARIABLE(grub_relocator_xen_remapper_virt2)
.quad 0
/* Unmap old remapper area. */
MOV_IMM64_RAX(grub_relocator_xen_remapper_virt2)
movq %rax, %rdi
xorq %rax, %rax
xorq %rax, %rax /* Invalid pte */
movq %rax, %rsi
movq $2, %rdx
movq $UVMF_INVLPG, %rdx
movq $__HYPERVISOR_update_va_mapping, %rax
syscall
/* mov imm64, %rax */
.byte 0x48
.byte 0xb8
VARIABLE(grub_relocator_xen_stack)
.quad 0
/* Prepare registers for starting kernel. */
MOV_IMM64_RAX(grub_relocator_xen_stack)
movq %rax, %rsp
/* mov imm64, %rax */
.byte 0x48
.byte 0xb8
VARIABLE(grub_relocator_xen_start_info)
.quad 0
MOV_IMM64_RAX(grub_relocator_xen_start_info)
movq %rax, %rsi
cld
/* mov imm64, %rax */
.byte 0x48
.byte 0xb8
VARIABLE(grub_relocator_xen_entry_point)
.quad 0
MOV_IMM64_RAX(grub_relocator_xen_entry_point)
/* Now start the new kernel. */
jmp *%rax
VARIABLE(grub_relocator_xen_end)
grub-core/lib/xen/relocator.c
+20 -8
View File
@@ -29,6 +29,11 @@
typedef grub_addr_t grub_xen_reg_t;
struct grub_relocator_xen_paging_area {
grub_xen_reg_t start;
grub_xen_reg_t size;
} GRUB_PACKED;
extern grub_uint8_t grub_relocator_xen_start;
extern grub_uint8_t grub_relocator_xen_end;
extern grub_uint8_t grub_relocator_xen_remap_start;
@@ -36,15 +41,16 @@ extern grub_uint8_t grub_relocator_xen_remap_end;
extern grub_xen_reg_t grub_relocator_xen_stack;
extern grub_xen_reg_t grub_relocator_xen_start_info;
extern grub_xen_reg_t grub_relocator_xen_entry_point;
extern grub_xen_reg_t grub_relocator_xen_paging_start;
extern grub_xen_reg_t grub_relocator_xen_paging_size;
extern grub_xen_reg_t grub_relocator_xen_remapper_virt;
extern grub_xen_reg_t grub_relocator_xen_remapper_virt2;
extern grub_xen_reg_t grub_relocator_xen_remapper_map;
extern grub_xen_reg_t grub_relocator_xen_mfn_list;
extern struct grub_relocator_xen_paging_area
grub_relocator_xen_paging_areas[XEN_MAX_MAPPINGS];
extern grub_xen_reg_t grub_relocator_xen_remap_continue;
#ifdef __i386__
extern grub_xen_reg_t grub_relocator_xen_mmu_op_addr;
extern grub_xen_reg_t grub_relocator_xen_paging_areas_addr;
extern grub_xen_reg_t grub_relocator_xen_remapper_map_high;
#endif
extern mmuext_op_t grub_relocator_xen_mmu_op[3];
@@ -61,6 +67,7 @@ grub_relocator_xen_boot (struct grub_relocator *rel,
{
grub_err_t err;
void *relst;
int i;
grub_relocator_chunk_t ch, ch_tramp;
grub_xen_mfn_t *mfn_list =
(grub_xen_mfn_t *) grub_xen_start_page_addr->mfn_list;
@@ -77,8 +84,11 @@ grub_relocator_xen_boot (struct grub_relocator *rel,
grub_relocator_xen_stack = state.stack;
grub_relocator_xen_start_info = state.start_info;
grub_relocator_xen_entry_point = state.entry_point;
grub_relocator_xen_paging_start = state.paging_start << 12;
grub_relocator_xen_paging_size = state.paging_size;
for (i = 0; i < XEN_MAX_MAPPINGS; i++)
{
grub_relocator_xen_paging_areas[i].start = state.paging_start[i];
grub_relocator_xen_paging_areas[i].size = state.paging_size[i];
}
grub_relocator_xen_remapper_virt = remapper_virt;
grub_relocator_xen_remapper_virt2 = remapper_virt;
grub_relocator_xen_remap_continue = trampoline_virt;
@@ -88,10 +98,12 @@ grub_relocator_xen_boot (struct grub_relocator *rel,
grub_relocator_xen_remapper_map_high = (mfn_list[remapper_pfn] >> 20);
grub_relocator_xen_mmu_op_addr = (char *) &grub_relocator_xen_mmu_op
- (char *) &grub_relocator_xen_remap_start + remapper_virt;
grub_relocator_xen_paging_areas_addr =
(char *) &grub_relocator_xen_paging_areas
- (char *) &grub_relocator_xen_remap_start + remapper_virt;
#endif
grub_relocator_xen_mfn_list = state.mfn_list
+ state.paging_start * sizeof (grub_addr_t);
grub_relocator_xen_mfn_list = state.mfn_list;
grub_memset (grub_relocator_xen_mmu_op, 0,
sizeof (grub_relocator_xen_mmu_op));
@@ -100,9 +112,9 @@ grub_relocator_xen_boot (struct grub_relocator *rel,
#else
grub_relocator_xen_mmu_op[0].cmd = MMUEXT_PIN_L4_TABLE;
#endif
grub_relocator_xen_mmu_op[0].arg1.mfn = mfn_list[state.paging_start];
grub_relocator_xen_mmu_op[0].arg1.mfn = mfn_list[state.paging_start[0]];
grub_relocator_xen_mmu_op[1].cmd = MMUEXT_NEW_BASEPTR;
grub_relocator_xen_mmu_op[1].arg1.mfn = mfn_list[state.paging_start];
grub_relocator_xen_mmu_op[1].arg1.mfn = mfn_list[state.paging_start[0]];
grub_relocator_xen_mmu_op[2].cmd = MMUEXT_UNPIN_TABLE;
grub_relocator_xen_mmu_op[2].arg1.mfn =
mfn_list[grub_xen_start_page_addr->pt_base >> 12];
grub-core/lib/xzembed/xz_dec_lzma2.c
+4
View File
@@ -1044,6 +1044,8 @@ enum xz_ret xz_dec_lzma2_run(
s->lzma2.sequence = SEQ_LZMA_PREPARE;
/* Fall through */
case SEQ_LZMA_PREPARE:
if (s->lzma2.compressed < RC_INIT_BYTES)
return XZ_DATA_ERROR;
@@ -1054,6 +1056,8 @@ enum xz_ret xz_dec_lzma2_run(
s->lzma2.compressed -= RC_INIT_BYTES;
s->lzma2.sequence = SEQ_LZMA_RUN;
/* Fall through */
case SEQ_LZMA_RUN:
/*
* Set dictionary limit to indicate how much we want
grub-core/lib/xzembed/xz_dec_stream.c
+6
View File
@@ -750,6 +750,7 @@ static enum xz_ret dec_main(struct xz_dec *s, struct xz_buf *b)
s->sequence = SEQ_BLOCK_START;
/* FALLTHROUGH */
case SEQ_BLOCK_START:
/* We need one byte of input to continue. */
if (b->in_pos == b->in_size)
@@ -773,6 +774,7 @@ static enum xz_ret dec_main(struct xz_dec *s, struct xz_buf *b)
s->temp.pos = 0;
s->sequence = SEQ_BLOCK_HEADER;
/* FALLTHROUGH */
case SEQ_BLOCK_HEADER:
if (!fill_temp(s, b))
return XZ_OK;
@@ -783,6 +785,7 @@ static enum xz_ret dec_main(struct xz_dec *s, struct xz_buf *b)
s->sequence = SEQ_BLOCK_UNCOMPRESS;
/* FALLTHROUGH */
case SEQ_BLOCK_UNCOMPRESS:
ret = dec_block(s, b);
if (ret != XZ_STREAM_END)
@@ -810,6 +813,7 @@ static enum xz_ret dec_main(struct xz_dec *s, struct xz_buf *b)
s->sequence = SEQ_BLOCK_CHECK;
/* FALLTHROUGH */
case SEQ_BLOCK_CHECK:
ret = hash_validate(s, b, 0);
if (ret != XZ_STREAM_END)
@@ -858,6 +862,7 @@ static enum xz_ret dec_main(struct xz_dec *s, struct xz_buf *b)
s->sequence = SEQ_INDEX_CRC32;
/* FALLTHROUGH */
case SEQ_INDEX_CRC32:
ret = hash_validate(s, b, 1);
if (ret != XZ_STREAM_END)
@@ -866,6 +871,7 @@ static enum xz_ret dec_main(struct xz_dec *s, struct xz_buf *b)
s->temp.size = STREAM_HEADER_SIZE;
s->sequence = SEQ_STREAM_FOOTER;
/* FALLTHROUGH */
case SEQ_STREAM_FOOTER:
if (!fill_temp(s, b))
return XZ_OK;