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introduce a new monitor command 'dump-guest-memory' to dump guest's memory

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The command's usage:
   dump-guest-memory [-p] protocol [begin] [length]
The supported protocol can be file or fd:
1. file: the protocol starts with "file:", and the following string is
   the file's path.
2. fd: the protocol starts with "fd:", and the following string is the
   fd's name.

Note:
  1. If you want to use gdb to process the core, please specify -p option.
     The reason why the -p option is not default is:
       a. guest machine in a catastrophic state can have corrupted memory,
          which we cannot trust.
       b. The guest machine can be in read-mode even if paging is enabled.
          For example: the guest machine uses ACPI to sleep, and ACPI sleep
          state goes in real-mode.
  2. If you don't want to dump all guest's memory, please specify the start
     physical address and the length.

Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
This commit is contained in:
Wen Congyang 2012-05-07 12:10:47 +08:00 • committed by Luiz Capitulino
parent 68f4730c71
commit 783e9b4826
10 changed files with 1050 additions and 0 deletions
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5
elf.h
View file

@ -1037,6 +1037,11 @@ typedef struct elf64_sym {
#define EI_NIDENT 16
/* Special value for e_phnum. This indicates that the real number of
program headers is too large to fit into e_phnum. Instead the real
value is in the field sh_info of section 0. */
#define PN_XNUM 0xffff
typedef struct elf32_hdr{
unsigned char e_ident[EI_NIDENT];
Elf32_Half e_type;