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dump: Make DumpState and endian conversion routines available for arch-specific dump code

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Make DumpState and endian conversion routines available for arch-specific dump
code by moving into dump.h. DumpState will be needed by arch-specific dump
code to access target endian information from DumpState->ArchDumpInfo. Also
break the dependency of dump.h from stubs/dump.c by creating a separate
dump-arch.h.

This patch doesn't change any functionality.

Signed-off-by: Bharata B Rao <bharata@linux.ibm.com>
[ rebased on top of current master branch,
  renamed endian helpers to cpu_to_dump{16,32,64},
  pass a DumpState * argument to endian helpers,
  Greg Kurz <gkurz@linux.vnet.ibm.com> ]
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
[agraf: fix to apply]
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Bharata B Rao 2014-05-19 19:57:44 +02:00 committed by Alexander Graf
parent 85720d3667
commit acb0ef5801
4 changed files with 153 additions and 151 deletions
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231
dump.c
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@ -36,9 +36,9 @@
#define ELF_MACHINE_UNAME "Unknown" #define ELF_MACHINE_UNAME "Unknown"
#endif #endif
static uint16_t cpu_convert_to_target16(uint16_t val, int endian) uint16_t cpu_to_dump16(DumpState *s, uint16_t val)
{ {
if (endian == ELFDATA2LSB) { if (s->dump_info.d_endian == ELFDATA2LSB) {
val = cpu_to_le16(val); val = cpu_to_le16(val);
} else { } else {
val = cpu_to_be16(val); val = cpu_to_be16(val);
@ -47,9 +47,9 @@ static uint16_t cpu_convert_to_target16(uint16_t val, int endian)
return val; return val;
} }
static uint32_t cpu_convert_to_target32(uint32_t val, int endian) uint32_t cpu_to_dump32(DumpState *s, uint32_t val)
{ {
if (endian == ELFDATA2LSB) { if (s->dump_info.d_endian == ELFDATA2LSB) {
val = cpu_to_le32(val); val = cpu_to_le32(val);
} else { } else {
val = cpu_to_be32(val); val = cpu_to_be32(val);
@ -58,9 +58,9 @@ static uint32_t cpu_convert_to_target32(uint32_t val, int endian)
return val; return val;
} }
static uint64_t cpu_convert_to_target64(uint64_t val, int endian) uint64_t cpu_to_dump64(DumpState *s, uint64_t val)
{ {
if (endian == ELFDATA2LSB) { if (s->dump_info.d_endian == ELFDATA2LSB) {
val = cpu_to_le64(val); val = cpu_to_le64(val);
} else { } else {
val = cpu_to_be64(val); val = cpu_to_be64(val);
@ -69,36 +69,6 @@ static uint64_t cpu_convert_to_target64(uint64_t val, int endian)
return val; return val;
} }
typedef struct DumpState {
GuestPhysBlockList guest_phys_blocks;
ArchDumpInfo dump_info;
MemoryMappingList list;
uint16_t phdr_num;
uint32_t sh_info;
bool have_section;
bool resume;
ssize_t note_size;
hwaddr memory_offset;
int fd;
GuestPhysBlock *next_block;
ram_addr_t start;
bool has_filter;
int64_t begin;
int64_t length;
uint8_t *note_buf; /* buffer for notes */
size_t note_buf_offset; /* the writing place in note_buf */
uint32_t nr_cpus; /* number of guest's cpu */
uint64_t max_mapnr; /* the biggest guest's phys-mem's number */
size_t len_dump_bitmap; /* the size of the place used to store
dump_bitmap in vmcore */
off_t offset_dump_bitmap; /* offset of dump_bitmap part in vmcore */
off_t offset_page; /* offset of page part in vmcore */
size_t num_dumpable; /* number of page that can be dumped */
uint32_t flag_compress; /* indicate the compression format */
} DumpState;
static int dump_cleanup(DumpState *s) static int dump_cleanup(DumpState *s)
{ {
int ret = 0; int ret = 0;
@ -137,29 +107,25 @@ static int write_elf64_header(DumpState *s)
{ {
Elf64_Ehdr elf_header; Elf64_Ehdr elf_header;
int ret; int ret;
int endian = s->dump_info.d_endian;
memset(&elf_header, 0, sizeof(Elf64_Ehdr)); memset(&elf_header, 0, sizeof(Elf64_Ehdr));
memcpy(&elf_header, ELFMAG, SELFMAG); memcpy(&elf_header, ELFMAG, SELFMAG);
elf_header.e_ident[EI_CLASS] = ELFCLASS64; elf_header.e_ident[EI_CLASS] = ELFCLASS64;
elf_header.e_ident[EI_DATA] = s->dump_info.d_endian; elf_header.e_ident[EI_DATA] = s->dump_info.d_endian;
elf_header.e_ident[EI_VERSION] = EV_CURRENT; elf_header.e_ident[EI_VERSION] = EV_CURRENT;
elf_header.e_type = cpu_convert_to_target16(ET_CORE, endian); elf_header.e_type = cpu_to_dump16(s, ET_CORE);
elf_header.e_machine = cpu_convert_to_target16(s->dump_info.d_machine, elf_header.e_machine = cpu_to_dump16(s, s->dump_info.d_machine);
endian); elf_header.e_version = cpu_to_dump32(s, EV_CURRENT);
elf_header.e_version = cpu_convert_to_target32(EV_CURRENT, endian); elf_header.e_ehsize = cpu_to_dump16(s, sizeof(elf_header));
elf_header.e_ehsize = cpu_convert_to_target16(sizeof(elf_header), endian); elf_header.e_phoff = cpu_to_dump64(s, sizeof(Elf64_Ehdr));
elf_header.e_phoff = cpu_convert_to_target64(sizeof(Elf64_Ehdr), endian); elf_header.e_phentsize = cpu_to_dump16(s, sizeof(Elf64_Phdr));
elf_header.e_phentsize = cpu_convert_to_target16(sizeof(Elf64_Phdr), elf_header.e_phnum = cpu_to_dump16(s, s->phdr_num);
endian);
elf_header.e_phnum = cpu_convert_to_target16(s->phdr_num, endian);
if (s->have_section) { if (s->have_section) {
uint64_t shoff = sizeof(Elf64_Ehdr) + sizeof(Elf64_Phdr) * s->sh_info; uint64_t shoff = sizeof(Elf64_Ehdr) + sizeof(Elf64_Phdr) * s->sh_info;
elf_header.e_shoff = cpu_convert_to_target64(shoff, endian); elf_header.e_shoff = cpu_to_dump64(s, shoff);
elf_header.e_shentsize = cpu_convert_to_target16(sizeof(Elf64_Shdr), elf_header.e_shentsize = cpu_to_dump16(s, sizeof(Elf64_Shdr));
endian); elf_header.e_shnum = cpu_to_dump16(s, 1);
elf_header.e_shnum = cpu_convert_to_target16(1, endian);
} }
ret = fd_write_vmcore(&elf_header, sizeof(elf_header), s); ret = fd_write_vmcore(&elf_header, sizeof(elf_header), s);
@ -175,29 +141,25 @@ static int write_elf32_header(DumpState *s)
{ {
Elf32_Ehdr elf_header; Elf32_Ehdr elf_header;
int ret; int ret;
int endian = s->dump_info.d_endian;
memset(&elf_header, 0, sizeof(Elf32_Ehdr)); memset(&elf_header, 0, sizeof(Elf32_Ehdr));
memcpy(&elf_header, ELFMAG, SELFMAG); memcpy(&elf_header, ELFMAG, SELFMAG);
elf_header.e_ident[EI_CLASS] = ELFCLASS32; elf_header.e_ident[EI_CLASS] = ELFCLASS32;
elf_header.e_ident[EI_DATA] = endian; elf_header.e_ident[EI_DATA] = s->dump_info.d_endian;
elf_header.e_ident[EI_VERSION] = EV_CURRENT; elf_header.e_ident[EI_VERSION] = EV_CURRENT;
elf_header.e_type = cpu_convert_to_target16(ET_CORE, endian); elf_header.e_type = cpu_to_dump16(s, ET_CORE);
elf_header.e_machine = cpu_convert_to_target16(s->dump_info.d_machine, elf_header.e_machine = cpu_to_dump16(s, s->dump_info.d_machine);
endian); elf_header.e_version = cpu_to_dump32(s, EV_CURRENT);
elf_header.e_version = cpu_convert_to_target32(EV_CURRENT, endian); elf_header.e_ehsize = cpu_to_dump16(s, sizeof(elf_header));
elf_header.e_ehsize = cpu_convert_to_target16(sizeof(elf_header), endian); elf_header.e_phoff = cpu_to_dump32(s, sizeof(Elf32_Ehdr));
elf_header.e_phoff = cpu_convert_to_target32(sizeof(Elf32_Ehdr), endian); elf_header.e_phentsize = cpu_to_dump16(s, sizeof(Elf32_Phdr));
elf_header.e_phentsize = cpu_convert_to_target16(sizeof(Elf32_Phdr), elf_header.e_phnum = cpu_to_dump16(s, s->phdr_num);
endian);
elf_header.e_phnum = cpu_convert_to_target16(s->phdr_num, endian);
if (s->have_section) { if (s->have_section) {
uint32_t shoff = sizeof(Elf32_Ehdr) + sizeof(Elf32_Phdr) * s->sh_info; uint32_t shoff = sizeof(Elf32_Ehdr) + sizeof(Elf32_Phdr) * s->sh_info;
elf_header.e_shoff = cpu_convert_to_target32(shoff, endian); elf_header.e_shoff = cpu_to_dump32(s, shoff);
elf_header.e_shentsize = cpu_convert_to_target16(sizeof(Elf32_Shdr), elf_header.e_shentsize = cpu_to_dump16(s, sizeof(Elf32_Shdr));
endian); elf_header.e_shnum = cpu_to_dump16(s, 1);
elf_header.e_shnum = cpu_convert_to_target16(1, endian);
} }
ret = fd_write_vmcore(&elf_header, sizeof(elf_header), s); ret = fd_write_vmcore(&elf_header, sizeof(elf_header), s);
@ -215,15 +177,14 @@ static int write_elf64_load(DumpState *s, MemoryMapping *memory_mapping,
{ {
Elf64_Phdr phdr; Elf64_Phdr phdr;
int ret; int ret;
int endian = s->dump_info.d_endian;
memset(&phdr, 0, sizeof(Elf64_Phdr)); memset(&phdr, 0, sizeof(Elf64_Phdr));
phdr.p_type = cpu_convert_to_target32(PT_LOAD, endian); phdr.p_type = cpu_to_dump32(s, PT_LOAD);
phdr.p_offset = cpu_convert_to_target64(offset, endian); phdr.p_offset = cpu_to_dump64(s, offset);
phdr.p_paddr = cpu_convert_to_target64(memory_mapping->phys_addr, endian); phdr.p_paddr = cpu_to_dump64(s, memory_mapping->phys_addr);
phdr.p_filesz = cpu_convert_to_target64(filesz, endian); phdr.p_filesz = cpu_to_dump64(s, filesz);
phdr.p_memsz = cpu_convert_to_target64(memory_mapping->length, endian); phdr.p_memsz = cpu_to_dump64(s, memory_mapping->length);
phdr.p_vaddr = cpu_convert_to_target64(memory_mapping->virt_addr, endian); phdr.p_vaddr = cpu_to_dump64(s, memory_mapping->virt_addr);
assert(memory_mapping->length >= filesz); assert(memory_mapping->length >= filesz);
@ -242,15 +203,14 @@ static int write_elf32_load(DumpState *s, MemoryMapping *memory_mapping,
{ {
Elf32_Phdr phdr; Elf32_Phdr phdr;
int ret; int ret;
int endian = s->dump_info.d_endian;
memset(&phdr, 0, sizeof(Elf32_Phdr)); memset(&phdr, 0, sizeof(Elf32_Phdr));
phdr.p_type = cpu_convert_to_target32(PT_LOAD, endian); phdr.p_type = cpu_to_dump32(s, PT_LOAD);
phdr.p_offset = cpu_convert_to_target32(offset, endian); phdr.p_offset = cpu_to_dump32(s, offset);
phdr.p_paddr = cpu_convert_to_target32(memory_mapping->phys_addr, endian); phdr.p_paddr = cpu_to_dump32(s, memory_mapping->phys_addr);
phdr.p_filesz = cpu_convert_to_target32(filesz, endian); phdr.p_filesz = cpu_to_dump32(s, filesz);
phdr.p_memsz = cpu_convert_to_target32(memory_mapping->length, endian); phdr.p_memsz = cpu_to_dump32(s, memory_mapping->length);
phdr.p_vaddr = cpu_convert_to_target32(memory_mapping->virt_addr, endian); phdr.p_vaddr = cpu_to_dump32(s, memory_mapping->virt_addr);
assert(memory_mapping->length >= filesz); assert(memory_mapping->length >= filesz);
@ -266,16 +226,15 @@ static int write_elf32_load(DumpState *s, MemoryMapping *memory_mapping,
static int write_elf64_note(DumpState *s) static int write_elf64_note(DumpState *s)
{ {
Elf64_Phdr phdr; Elf64_Phdr phdr;
int endian = s->dump_info.d_endian;
hwaddr begin = s->memory_offset - s->note_size; hwaddr begin = s->memory_offset - s->note_size;
int ret; int ret;
memset(&phdr, 0, sizeof(Elf64_Phdr)); memset(&phdr, 0, sizeof(Elf64_Phdr));
phdr.p_type = cpu_convert_to_target32(PT_NOTE, endian); phdr.p_type = cpu_to_dump32(s, PT_NOTE);
phdr.p_offset = cpu_convert_to_target64(begin, endian); phdr.p_offset = cpu_to_dump64(s, begin);
phdr.p_paddr = 0; phdr.p_paddr = 0;
phdr.p_filesz = cpu_convert_to_target64(s->note_size, endian); phdr.p_filesz = cpu_to_dump64(s, s->note_size);
phdr.p_memsz = cpu_convert_to_target64(s->note_size, endian); phdr.p_memsz = cpu_to_dump64(s, s->note_size);
phdr.p_vaddr = 0; phdr.p_vaddr = 0;
ret = fd_write_vmcore(&phdr, sizeof(Elf64_Phdr), s); ret = fd_write_vmcore(&phdr, sizeof(Elf64_Phdr), s);
@ -322,15 +281,14 @@ static int write_elf32_note(DumpState *s)
{ {
hwaddr begin = s->memory_offset - s->note_size; hwaddr begin = s->memory_offset - s->note_size;
Elf32_Phdr phdr; Elf32_Phdr phdr;
int endian = s->dump_info.d_endian;
int ret; int ret;
memset(&phdr, 0, sizeof(Elf32_Phdr)); memset(&phdr, 0, sizeof(Elf32_Phdr));
phdr.p_type = cpu_convert_to_target32(PT_NOTE, endian); phdr.p_type = cpu_to_dump32(s, PT_NOTE);
phdr.p_offset = cpu_convert_to_target32(begin, endian); phdr.p_offset = cpu_to_dump32(s, begin);
phdr.p_paddr = 0; phdr.p_paddr = 0;
phdr.p_filesz = cpu_convert_to_target32(s->note_size, endian); phdr.p_filesz = cpu_to_dump32(s, s->note_size);
phdr.p_memsz = cpu_convert_to_target32(s->note_size, endian); phdr.p_memsz = cpu_to_dump32(s, s->note_size);
phdr.p_vaddr = 0; phdr.p_vaddr = 0;
ret = fd_write_vmcore(&phdr, sizeof(Elf32_Phdr), s); ret = fd_write_vmcore(&phdr, sizeof(Elf32_Phdr), s);
@ -372,7 +330,6 @@ static int write_elf_section(DumpState *s, int type)
{ {
Elf32_Shdr shdr32; Elf32_Shdr shdr32;
Elf64_Shdr shdr64; Elf64_Shdr shdr64;
int endian = s->dump_info.d_endian;
int shdr_size; int shdr_size;
void *shdr; void *shdr;
int ret; int ret;
@ -380,12 +337,12 @@ static int write_elf_section(DumpState *s, int type)
if (type == 0) { if (type == 0) {
shdr_size = sizeof(Elf32_Shdr); shdr_size = sizeof(Elf32_Shdr);
memset(&shdr32, 0, shdr_size); memset(&shdr32, 0, shdr_size);
shdr32.sh_info = cpu_convert_to_target32(s->sh_info, endian); shdr32.sh_info = cpu_to_dump32(s, s->sh_info);
shdr = &shdr32; shdr = &shdr32;
} else { } else {
shdr_size = sizeof(Elf64_Shdr); shdr_size = sizeof(Elf64_Shdr);
memset(&shdr64, 0, shdr_size); memset(&shdr64, 0, shdr_size);
shdr64.sh_info = cpu_convert_to_target32(s->sh_info, endian); shdr64.sh_info = cpu_to_dump32(s, s->sh_info);
shdr = &shdr64; shdr = &shdr64;
} }
@ -791,7 +748,6 @@ static int create_header32(DumpState *s)
DiskDumpHeader32 *dh = NULL; DiskDumpHeader32 *dh = NULL;
KdumpSubHeader32 *kh = NULL; KdumpSubHeader32 *kh = NULL;
size_t size; size_t size;
int endian = s->dump_info.d_endian;
uint32_t block_size; uint32_t block_size;
uint32_t sub_hdr_size; uint32_t sub_hdr_size;
uint32_t bitmap_blocks; uint32_t bitmap_blocks;
@ -803,18 +759,17 @@ static int create_header32(DumpState *s)
dh = g_malloc0(size); dh = g_malloc0(size);
strncpy(dh->signature, KDUMP_SIGNATURE, strlen(KDUMP_SIGNATURE)); strncpy(dh->signature, KDUMP_SIGNATURE, strlen(KDUMP_SIGNATURE));
dh->header_version = cpu_convert_to_target32(6, endian); dh->header_version = cpu_to_dump32(s, 6);
block_size = TARGET_PAGE_SIZE; block_size = TARGET_PAGE_SIZE;
dh->block_size = cpu_convert_to_target32(block_size, endian); dh->block_size = cpu_to_dump32(s, block_size);
sub_hdr_size = sizeof(struct KdumpSubHeader32) + s->note_size; sub_hdr_size = sizeof(struct KdumpSubHeader32) + s->note_size;
sub_hdr_size = DIV_ROUND_UP(sub_hdr_size, block_size); sub_hdr_size = DIV_ROUND_UP(sub_hdr_size, block_size);
dh->sub_hdr_size = cpu_convert_to_target32(sub_hdr_size, endian); dh->sub_hdr_size = cpu_to_dump32(s, sub_hdr_size);
/* dh->max_mapnr may be truncated, full 64bit is in kh.max_mapnr_64 */ /* dh->max_mapnr may be truncated, full 64bit is in kh.max_mapnr_64 */
dh->max_mapnr = cpu_convert_to_target32(MIN(s->max_mapnr, UINT_MAX), dh->max_mapnr = cpu_to_dump32(s, MIN(s->max_mapnr, UINT_MAX));
endian); dh->nr_cpus = cpu_to_dump32(s, s->nr_cpus);
dh->nr_cpus = cpu_convert_to_target32(s->nr_cpus, endian);
bitmap_blocks = DIV_ROUND_UP(s->len_dump_bitmap, block_size) * 2; bitmap_blocks = DIV_ROUND_UP(s->len_dump_bitmap, block_size) * 2;
dh->bitmap_blocks = cpu_convert_to_target32(bitmap_blocks, endian); dh->bitmap_blocks = cpu_to_dump32(s, bitmap_blocks);
strncpy(dh->utsname.machine, ELF_MACHINE_UNAME, sizeof(dh->utsname.machine)); strncpy(dh->utsname.machine, ELF_MACHINE_UNAME, sizeof(dh->utsname.machine));
if (s->flag_compress & DUMP_DH_COMPRESSED_ZLIB) { if (s->flag_compress & DUMP_DH_COMPRESSED_ZLIB) {
@ -830,7 +785,7 @@ static int create_header32(DumpState *s)
status |= DUMP_DH_COMPRESSED_SNAPPY; status |= DUMP_DH_COMPRESSED_SNAPPY;
} }
#endif #endif
dh->status = cpu_convert_to_target32(status, endian); dh->status = cpu_to_dump32(s, status);
if (write_buffer(s->fd, 0, dh, size) < 0) { if (write_buffer(s->fd, 0, dh, size) < 0) {
dump_error(s, "dump: failed to write disk dump header.\n"); dump_error(s, "dump: failed to write disk dump header.\n");
@ -843,13 +798,13 @@ static int create_header32(DumpState *s)
kh = g_malloc0(size); kh = g_malloc0(size);
/* 64bit max_mapnr_64 */ /* 64bit max_mapnr_64 */
kh->max_mapnr_64 = cpu_convert_to_target64(s->max_mapnr, endian); kh->max_mapnr_64 = cpu_to_dump64(s, s->max_mapnr);
kh->phys_base = cpu_convert_to_target32(PHYS_BASE, endian); kh->phys_base = cpu_to_dump32(s, PHYS_BASE);
kh->dump_level = cpu_convert_to_target32(DUMP_LEVEL, endian); kh->dump_level = cpu_to_dump32(s, DUMP_LEVEL);
offset_note = DISKDUMP_HEADER_BLOCKS * block_size + size; offset_note = DISKDUMP_HEADER_BLOCKS * block_size + size;
kh->offset_note = cpu_convert_to_target64(offset_note, endian); kh->offset_note = cpu_to_dump64(s, offset_note);
kh->note_size = cpu_convert_to_target32(s->note_size, endian); kh->note_size = cpu_to_dump32(s, s->note_size);
if (write_buffer(s->fd, DISKDUMP_HEADER_BLOCKS * if (write_buffer(s->fd, DISKDUMP_HEADER_BLOCKS *
block_size, kh, size) < 0) { block_size, kh, size) < 0) {
@ -898,7 +853,6 @@ static int create_header64(DumpState *s)
DiskDumpHeader64 *dh = NULL; DiskDumpHeader64 *dh = NULL;
KdumpSubHeader64 *kh = NULL; KdumpSubHeader64 *kh = NULL;
size_t size; size_t size;
int endian = s->dump_info.d_endian;
uint32_t block_size; uint32_t block_size;
uint32_t sub_hdr_size; uint32_t sub_hdr_size;
uint32_t bitmap_blocks; uint32_t bitmap_blocks;
@ -910,18 +864,17 @@ static int create_header64(DumpState *s)
dh = g_malloc0(size); dh = g_malloc0(size);
strncpy(dh->signature, KDUMP_SIGNATURE, strlen(KDUMP_SIGNATURE)); strncpy(dh->signature, KDUMP_SIGNATURE, strlen(KDUMP_SIGNATURE));
dh->header_version = cpu_convert_to_target32(6, endian); dh->header_version = cpu_to_dump32(s, 6);
block_size = TARGET_PAGE_SIZE; block_size = TARGET_PAGE_SIZE;
dh->block_size = cpu_convert_to_target32(block_size, endian); dh->block_size = cpu_to_dump32(s, block_size);
sub_hdr_size = sizeof(struct KdumpSubHeader64) + s->note_size; sub_hdr_size = sizeof(struct KdumpSubHeader64) + s->note_size;
sub_hdr_size = DIV_ROUND_UP(sub_hdr_size, block_size); sub_hdr_size = DIV_ROUND_UP(sub_hdr_size, block_size);
dh->sub_hdr_size = cpu_convert_to_target32(sub_hdr_size, endian); dh->sub_hdr_size = cpu_to_dump32(s, sub_hdr_size);
/* dh->max_mapnr may be truncated, full 64bit is in kh.max_mapnr_64 */ /* dh->max_mapnr may be truncated, full 64bit is in kh.max_mapnr_64 */
dh->max_mapnr = cpu_convert_to_target32(MIN(s->max_mapnr, UINT_MAX), dh->max_mapnr = cpu_to_dump32(s, MIN(s->max_mapnr, UINT_MAX));
endian); dh->nr_cpus = cpu_to_dump32(s, s->nr_cpus);
dh->nr_cpus = cpu_convert_to_target32(s->nr_cpus, endian);
bitmap_blocks = DIV_ROUND_UP(s->len_dump_bitmap, block_size) * 2; bitmap_blocks = DIV_ROUND_UP(s->len_dump_bitmap, block_size) * 2;
dh->bitmap_blocks = cpu_convert_to_target32(bitmap_blocks, endian); dh->bitmap_blocks = cpu_to_dump32(s, bitmap_blocks);
strncpy(dh->utsname.machine, ELF_MACHINE_UNAME, sizeof(dh->utsname.machine)); strncpy(dh->utsname.machine, ELF_MACHINE_UNAME, sizeof(dh->utsname.machine));
if (s->flag_compress & DUMP_DH_COMPRESSED_ZLIB) { if (s->flag_compress & DUMP_DH_COMPRESSED_ZLIB) {
@ -937,7 +890,7 @@ static int create_header64(DumpState *s)
status |= DUMP_DH_COMPRESSED_SNAPPY; status |= DUMP_DH_COMPRESSED_SNAPPY;
} }
#endif #endif
dh->status = cpu_convert_to_target32(status, endian); dh->status = cpu_to_dump32(s, status);
if (write_buffer(s->fd, 0, dh, size) < 0) { if (write_buffer(s->fd, 0, dh, size) < 0) {
dump_error(s, "dump: failed to write disk dump header.\n"); dump_error(s, "dump: failed to write disk dump header.\n");
@ -950,13 +903,13 @@ static int create_header64(DumpState *s)
kh = g_malloc0(size); kh = g_malloc0(size);
/* 64bit max_mapnr_64 */ /* 64bit max_mapnr_64 */
kh->max_mapnr_64 = cpu_convert_to_target64(s->max_mapnr, endian); kh->max_mapnr_64 = cpu_to_dump64(s, s->max_mapnr);
kh->phys_base = cpu_convert_to_target64(PHYS_BASE, endian); kh->phys_base = cpu_to_dump64(s, PHYS_BASE);
kh->dump_level = cpu_convert_to_target32(DUMP_LEVEL, endian); kh->dump_level = cpu_to_dump32(s, DUMP_LEVEL);
offset_note = DISKDUMP_HEADER_BLOCKS * block_size + size; offset_note = DISKDUMP_HEADER_BLOCKS * block_size + size;
kh->offset_note = cpu_convert_to_target64(offset_note, endian); kh->offset_note = cpu_to_dump64(s, offset_note);
kh->note_size = cpu_convert_to_target64(s->note_size, endian); kh->note_size = cpu_to_dump64(s, s->note_size);
if (write_buffer(s->fd, DISKDUMP_HEADER_BLOCKS * if (write_buffer(s->fd, DISKDUMP_HEADER_BLOCKS *
block_size, kh, size) < 0) { block_size, kh, size) < 0) {
@ -1260,7 +1213,6 @@ static int write_dump_pages(DumpState *s)
off_t offset_desc, offset_data; off_t offset_desc, offset_data;
PageDescriptor pd, pd_zero; PageDescriptor pd, pd_zero;
uint8_t *buf; uint8_t *buf;
int endian = s->dump_info.d_endian;
GuestPhysBlock *block_iter = NULL; GuestPhysBlock *block_iter = NULL;
uint64_t pfn_iter; uint64_t pfn_iter;
@ -1285,10 +1237,10 @@ static int write_dump_pages(DumpState *s)
* init zero page's page_desc and page_data, because every zero page * init zero page's page_desc and page_data, because every zero page
* uses the same page_data * uses the same page_data
*/ */
pd_zero.size = cpu_convert_to_target32(TARGET_PAGE_SIZE, endian); pd_zero.size = cpu_to_dump32(s, TARGET_PAGE_SIZE);
pd_zero.flags = cpu_convert_to_target32(0, endian); pd_zero.flags = cpu_to_dump32(s, 0);
pd_zero.offset = cpu_convert_to_target64(offset_data, endian); pd_zero.offset = cpu_to_dump64(s, offset_data);
pd_zero.page_flags = cpu_convert_to_target64(0, endian); pd_zero.page_flags = cpu_to_dump64(s, 0);
buf = g_malloc0(TARGET_PAGE_SIZE); buf = g_malloc0(TARGET_PAGE_SIZE);
ret = write_cache(&page_data, buf, TARGET_PAGE_SIZE, false); ret = write_cache(&page_data, buf, TARGET_PAGE_SIZE, false);
g_free(buf); g_free(buf);
@ -1326,12 +1278,11 @@ static int write_dump_pages(DumpState *s)
*/ */
size_out = len_buf_out; size_out = len_buf_out;
if ((s->flag_compress & DUMP_DH_COMPRESSED_ZLIB) && if ((s->flag_compress & DUMP_DH_COMPRESSED_ZLIB) &&
(compress2(buf_out, (uLongf *)&size_out, buf, (compress2(buf_out, (uLongf *)&size_out, buf,
TARGET_PAGE_SIZE, Z_BEST_SPEED) == Z_OK) && TARGET_PAGE_SIZE, Z_BEST_SPEED) == Z_OK) &&
(size_out < TARGET_PAGE_SIZE)) { (size_out < TARGET_PAGE_SIZE)) {
pd.flags = cpu_convert_to_target32(DUMP_DH_COMPRESSED_ZLIB, pd.flags = cpu_to_dump32(s, DUMP_DH_COMPRESSED_ZLIB);
endian); pd.size = cpu_to_dump32(s, size_out);
pd.size = cpu_convert_to_target32(size_out, endian);
ret = write_cache(&page_data, buf_out, size_out, false); ret = write_cache(&page_data, buf_out, size_out, false);
if (ret < 0) { if (ret < 0) {
@ -1343,9 +1294,8 @@ static int write_dump_pages(DumpState *s)
(lzo1x_1_compress(buf, TARGET_PAGE_SIZE, buf_out, (lzo1x_1_compress(buf, TARGET_PAGE_SIZE, buf_out,
(lzo_uint *)&size_out, wrkmem) == LZO_E_OK) && (lzo_uint *)&size_out, wrkmem) == LZO_E_OK) &&
(size_out < TARGET_PAGE_SIZE)) { (size_out < TARGET_PAGE_SIZE)) {
pd.flags = cpu_convert_to_target32(DUMP_DH_COMPRESSED_LZO, pd.flags = cpu_to_dump32(s, DUMP_DH_COMPRESSED_LZO);
endian); pd.size = cpu_to_dump32(s, size_out);
pd.size = cpu_convert_to_target32(size_out, endian);
ret = write_cache(&page_data, buf_out, size_out, false); ret = write_cache(&page_data, buf_out, size_out, false);
if (ret < 0) { if (ret < 0) {
@ -1358,9 +1308,8 @@ static int write_dump_pages(DumpState *s)
(snappy_compress((char *)buf, TARGET_PAGE_SIZE, (snappy_compress((char *)buf, TARGET_PAGE_SIZE,
(char *)buf_out, &size_out) == SNAPPY_OK) && (char *)buf_out, &size_out) == SNAPPY_OK) &&
(size_out < TARGET_PAGE_SIZE)) { (size_out < TARGET_PAGE_SIZE)) {
pd.flags = cpu_convert_to_target32( pd.flags = cpu_to_dump32(s, DUMP_DH_COMPRESSED_SNAPPY);
DUMP_DH_COMPRESSED_SNAPPY, endian); pd.size = cpu_to_dump32(s, size_out);
pd.size = cpu_convert_to_target32(size_out, endian);
ret = write_cache(&page_data, buf_out, size_out, false); ret = write_cache(&page_data, buf_out, size_out, false);
if (ret < 0) { if (ret < 0) {
@ -1373,9 +1322,9 @@ static int write_dump_pages(DumpState *s)
* fall back to save in plaintext, size_out should be * fall back to save in plaintext, size_out should be
* assigned TARGET_PAGE_SIZE * assigned TARGET_PAGE_SIZE
*/ */
pd.flags = cpu_convert_to_target32(0, endian); pd.flags = cpu_to_dump32(s, 0);
size_out = TARGET_PAGE_SIZE; size_out = TARGET_PAGE_SIZE;
pd.size = cpu_convert_to_target32(size_out, endian); pd.size = cpu_to_dump32(s, size_out);
ret = write_cache(&page_data, buf, TARGET_PAGE_SIZE, false); ret = write_cache(&page_data, buf, TARGET_PAGE_SIZE, false);
if (ret < 0) { if (ret < 0) {
@ -1385,8 +1334,8 @@ static int write_dump_pages(DumpState *s)
} }
/* get and write page desc here */ /* get and write page desc here */
pd.page_flags = cpu_convert_to_target64(0, endian); pd.page_flags = cpu_to_dump64(s, 0);
pd.offset = cpu_convert_to_target64(offset_data, endian); pd.offset = cpu_to_dump64(s, offset_data);
offset_data += size_out; offset_data += size_out;
ret = write_cache(&page_desc, &pd, sizeof(PageDescriptor), false); ret = write_cache(&page_desc, &pd, sizeof(PageDescriptor), false);

28
include/sysemu/dump-arch.h Normal file
View File

@ -0,0 +1,28 @@
/*
* QEMU dump
*
* Copyright Fujitsu, Corp. 2011, 2012
*
* Authors:
* Wen Congyang <wency@cn.fujitsu.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*
*/
#ifndef DUMP_ARCH_H
#define DUMP_ARCH_H
typedef struct ArchDumpInfo {
int d_machine; /* Architecture */
int d_endian; /* ELFDATA2LSB or ELFDATA2MSB */
int d_class; /* ELFCLASS32 or ELFCLASS64 */
} ArchDumpInfo;
struct GuestPhysBlockList; /* memory_mapping.h */
int cpu_get_dump_info(ArchDumpInfo *info,
const struct GuestPhysBlockList *guest_phys_blocks);
ssize_t cpu_get_note_size(int class, int machine, int nr_cpus);
#endif

43
include/sysemu/dump.h
View File

@ -43,11 +43,8 @@
#define PFN_BUFBITMAP (CHAR_BIT * BUFSIZE_BITMAP) #define PFN_BUFBITMAP (CHAR_BIT * BUFSIZE_BITMAP)
#define BUFSIZE_DATA_CACHE (TARGET_PAGE_SIZE * 4) #define BUFSIZE_DATA_CACHE (TARGET_PAGE_SIZE * 4)
typedef struct ArchDumpInfo { #include "sysemu/dump-arch.h"
int d_machine; /* Architecture */ #include "sysemu/memory_mapping.h"
int d_endian; /* ELFDATA2LSB or ELFDATA2MSB */
int d_class; /* ELFCLASS32 or ELFCLASS64 */
} ArchDumpInfo;
typedef struct QEMU_PACKED MakedumpfileHeader { typedef struct QEMU_PACKED MakedumpfileHeader {
char signature[16]; /* = "makedumpfile" */ char signature[16]; /* = "makedumpfile" */
@ -158,9 +155,37 @@ typedef struct QEMU_PACKED PageDescriptor {
uint64_t page_flags; /* page flags */ uint64_t page_flags; /* page flags */
} PageDescriptor; } PageDescriptor;
struct GuestPhysBlockList; /* memory_mapping.h */ typedef struct DumpState {
int cpu_get_dump_info(ArchDumpInfo *info, GuestPhysBlockList guest_phys_blocks;
const struct GuestPhysBlockList *guest_phys_blocks); ArchDumpInfo dump_info;
ssize_t cpu_get_note_size(int class, int machine, int nr_cpus); MemoryMappingList list;
uint16_t phdr_num;
uint32_t sh_info;
bool have_section;
bool resume;
ssize_t note_size;
hwaddr memory_offset;
int fd;
GuestPhysBlock *next_block;
ram_addr_t start;
bool has_filter;
int64_t begin;
int64_t length;
uint8_t *note_buf; /* buffer for notes */
size_t note_buf_offset; /* the writing place in note_buf */
uint32_t nr_cpus; /* number of guest's cpu */
uint64_t max_mapnr; /* the biggest guest's phys-mem's number */
size_t len_dump_bitmap; /* the size of the place used to store
dump_bitmap in vmcore */
off_t offset_dump_bitmap; /* offset of dump_bitmap part in vmcore */
off_t offset_page; /* offset of page part in vmcore */
size_t num_dumpable; /* number of page that can be dumped */
uint32_t flag_compress; /* indicate the compression format */
} DumpState;
uint16_t cpu_to_dump16(DumpState *s, uint16_t val);
uint32_t cpu_to_dump32(DumpState *s, uint32_t val);
uint64_t cpu_to_dump64(DumpState *s, uint64_t val);
#endif #endif

2
stubs/dump.c
View File

@ -12,7 +12,7 @@
*/ */
#include "qemu-common.h" #include "qemu-common.h"
#include "sysemu/dump.h" #include "sysemu/dump-arch.h"
#include "qapi/qmp/qerror.h" #include "qapi/qmp/qerror.h"
#include "qmp-commands.h" #include "qmp-commands.h"