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dump: Introduce dump_is_64bit() helper function 

Checking d_class in dump_info leads to lengthy conditionals so let's
shorten things a bit by introducing a helper function.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20220330123603.107120-7-frankja@linux.ibm.com>
This commit is contained in:
Janosch Frank 2022-03-30 12:36:00 +00:00 committed by Marc-André Lureau
parent e71d353360
commit 05bbaa5040
1 changed files with 15 additions and 10 deletions
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25
dump/dump.c
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@ -54,6 +54,11 @@ static Error *dump_migration_blocker;
DIV_ROUND_UP((name_size), 4) + \
DIV_ROUND_UP((desc_size), 4)) * 4)
static inline bool dump_is_64bit(DumpState *s)
{
return s->dump_info.d_class == ELFCLASS64;
}
uint16_t cpu_to_dump16(DumpState *s, uint16_t val)
{
if (s->dump_info.d_endian == ELFDATA2LSB) {
@ -488,7 +493,7 @@ static void write_elf_loads(DumpState *s, Error **errp)
get_offset_range(memory_mapping->phys_addr,
memory_mapping->length,
s, &offset, &filesz);
if (s->dump_info.d_class == ELFCLASS64) {
if (dump_is_64bit(s)) {
write_elf64_load(s, memory_mapping, phdr_index++, offset,
filesz, errp);
} else {
@ -536,7 +541,7 @@ static void dump_begin(DumpState *s, Error **errp)
*/
/* write elf header to vmcore */
if (s->dump_info.d_class == ELFCLASS64) {
if (dump_is_64bit(s)) {
write_elf64_header(s, errp);
} else {
write_elf32_header(s, errp);
@ -545,7 +550,7 @@ static void dump_begin(DumpState *s, Error **errp)
return;
}
if (s->dump_info.d_class == ELFCLASS64) {
if (dump_is_64bit(s)) {
/* write PT_NOTE to vmcore */
write_elf64_note(s, errp);
if (*errp) {
@ -756,7 +761,7 @@ static void get_note_sizes(DumpState *s, const void *note,
uint64_t name_sz;
uint64_t desc_sz;
if (s->dump_info.d_class == ELFCLASS64) {
if (dump_is_64bit(s)) {
const Elf64_Nhdr *hdr = note;
note_head_sz = sizeof(Elf64_Nhdr);
name_sz = tswap64(hdr->n_namesz);
@ -1016,10 +1021,10 @@ out:
static void write_dump_header(DumpState *s, Error **errp)
{
if (s->dump_info.d_class == ELFCLASS32) {
create_header32(s, errp);
} else {
if (dump_is_64bit(s)) {
create_header64(s, errp);
} else {
create_header32(s, errp);
}
}
@ -1706,8 +1711,8 @@ static void dump_init(DumpState *s, int fd, bool has_format,
uint32_t size;
uint16_t format;
note_head_size = s->dump_info.d_class == ELFCLASS32 ?
sizeof(Elf32_Nhdr) : sizeof(Elf64_Nhdr);
note_head_size = dump_is_64bit(s) ?
sizeof(Elf64_Nhdr) : sizeof(Elf32_Nhdr);
format = le16_to_cpu(vmci->vmcoreinfo.guest_format);
size = le32_to_cpu(vmci->vmcoreinfo.size);
@ -1810,7 +1815,7 @@ static void dump_init(DumpState *s, int fd, bool has_format,
}
}
if (s->dump_info.d_class == ELFCLASS64) {
if (dump_is_64bit(s)) {
s->phdr_offset = sizeof(Elf64_Ehdr);
s->shdr_offset = s->phdr_offset + sizeof(Elf64_Phdr) * s->phdr_num;
s->note_offset = s->shdr_offset + sizeof(Elf64_Shdr) * s->shdr_num;