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From: Wen Congyang <wency@cn.fujitsu.com>
To: qemu-devel <qemu-devel@nongnu.org>,
	Jan Kiszka <jan.kiszka@siemens.com>,
	Dave Anderson <anderson@redhat.com>,
	HATAYAMA Daisuke <d.hatayama@jp.fujitsu.com>,
	Luiz Capitulino <lcapitulino@redhat.com>,
	Eric Blake <eblake@redhat.com>,
	Anthony Liguori <aliguori@us.ibm.com>
Subject: [Qemu-devel] [PATCH 09/12 v11] target-i386: add API to get dump info
Date: Mon, 26 Mar 2012 18:05:08 +0800	[thread overview]
Message-ID: <4F703F54.3090507@cn.fujitsu.com> (raw)
In-Reply-To: <4F703DD6.9050000@cn.fujitsu.com>

Dump info contains: endian, class and architecture. The next
patch will use these information to create vmcore. Note: on
x86 box, the  class is ELFCLASS64 if the memory is larger than 4G.

Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
---
 cpu-all.h               |    7 +++++++
 dump.h                  |   23 +++++++++++++++++++++++
 target-i386/arch_dump.c |   34 ++++++++++++++++++++++++++++++++++
 3 files changed, 64 insertions(+), 0 deletions(-)
 create mode 100644 dump.h

diff --git a/cpu-all.h b/cpu-all.h
index cd9b013..d7c5a00 100644
--- a/cpu-all.h
+++ b/cpu-all.h
@@ -23,6 +23,7 @@
 #include "qemu-tls.h"
 #include "cpu-common.h"
 #include "memory_mapping.h"
+#include "dump.h"
 
 /* some important defines:
  *
@@ -553,6 +554,7 @@ int cpu_write_elf64_qemunote(write_core_dump_function f, CPUArchState *env,
                              target_phys_addr_t *offset, void *opaque);
 int cpu_write_elf32_qemunote(write_core_dump_function f, CPUArchState *env,
                              target_phys_addr_t *offset, void *opaque);
+int cpu_get_dump_info(ArchDumpInfo *info);
 #else
 static inline int cpu_write_elf64_note(write_core_dump_function f,
                                        CPUArchState *env, int cpuid,
@@ -583,6 +585,11 @@ static inline int cpu_write_elf32_qemunote(write_core_dump_function f,
 {
     return -1;
 }
+
+static inline int cpu_get_dump_info(ArchDumpInfo *info)
+{
+    return -1;
+}
 #endif
 
 #endif /* CPU_ALL_H */
diff --git a/dump.h b/dump.h
new file mode 100644
index 0000000..28340cf
--- /dev/null
+++ b/dump.h
@@ -0,0 +1,23 @@
+/*
+ * 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. See
+ * the COPYING file in the top-level directory.
+ *
+ */
+
+#ifndef DUMP_H
+#define DUMP_H
+
+typedef struct ArchDumpInfo {
+    int d_machine;  /* Architecture */
+    int d_endian;   /* ELFDATA2LSB or ELFDATA2MSB */
+    int d_class;    /* ELFCLASS32 or ELFCLASS64 */
+} ArchDumpInfo;
+
+#endif
diff --git a/target-i386/arch_dump.c b/target-i386/arch_dump.c
index 0f61dae..1a75dea 100644
--- a/target-i386/arch_dump.c
+++ b/target-i386/arch_dump.c
@@ -13,6 +13,7 @@
 
 #include "cpu.h"
 #include "cpu-all.h"
+#include "dump.h"
 #include "elf.h"
 
 #ifdef TARGET_X86_64
@@ -390,3 +391,36 @@ int cpu_write_elf32_qemunote(write_core_dump_function f, CPUArchState *env,
 {
     return cpu_write_qemu_note(f, env, offset, opaque, 0);
 }
+
+int cpu_get_dump_info(ArchDumpInfo *info)
+{
+    bool lma = false;
+    RAMBlock *block;
+
+#ifdef TARGET_X86_64
+    lma = !!(first_cpu->hflags & HF_LMA_MASK);
+#endif
+
+    if (lma) {
+        info->d_machine = EM_X86_64;
+    } else {
+        info->d_machine = EM_386;
+    }
+    info->d_endian = ELFDATA2LSB;
+
+    if (lma) {
+        info->d_class = ELFCLASS64;
+    } else {
+        info->d_class = ELFCLASS32;
+
+        QLIST_FOREACH(block, &ram_list.blocks, next) {
+            if (block->offset + block->length > UINT_MAX) {
+                /* The memory size is greater than 4G */
+                info->d_class = ELFCLASS64;
+                break;
+            }
+        }
+    }
+
+    return 0;
+}
-- 
1.7.1

  parent reply	other threads:[~2012-03-26 10:03 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-03-26  9:58 [Qemu-devel] [PATCH 00/12 v11] introducing a new, dedicated guest memory dump mechanism Wen Congyang
2012-03-26 10:00 ` [Qemu-devel] [PATCH 01/12 v11] Add API to create memory mapping list Wen Congyang
2012-03-26 10:01 ` [Qemu-devel] [PATCH 02/12 v12] Add API to check whether a physical address is I/O address Wen Congyang
2012-03-26 10:02 ` [Qemu-devel] [PATCH 03/12 v11] implement cpu_get_memory_mapping() Wen Congyang
2012-03-26 10:02 ` [Qemu-devel] [PATCH 04/12 v11] Add API to check whether paging mode is enabled Wen Congyang
2012-03-26 10:03 ` [Qemu-devel] [PATCH 05/12 v11] Add API to get memory mapping Wen Congyang
2012-03-27  2:27   ` Wen Congyang
2012-03-26 10:03 ` [Qemu-devel] [PATCH 06/12 v11] Add API to get memory mapping without do paging Wen Congyang
2012-03-26 10:04 ` [Qemu-devel] [PATCH 07/12 v11] target-i386: Add API to write elf notes to core file Wen Congyang
2012-03-26 10:04 ` [Qemu-devel] [PATCH 08/12 v11] target-i386: Add API to write cpu status " Wen Congyang
2012-03-26 10:05 ` Wen Congyang [this message]
2012-03-26 10:05 ` [Qemu-devel] [PATCH 10/12 v11] make gdb_id() generally avialable and rename it to cpu_index() Wen Congyang
2012-03-27  3:38   ` HATAYAMA Daisuke
2012-03-26 10:06 ` [Qemu-devel] [PATCH 11/12 v11] QError: Introduce new error for the dump-guest-memory command Wen Congyang
2012-03-26 10:06 ` [Qemu-devel] [PATCH 12/12 v11] introduce a new monitor command 'dump-guest-memory' to dump guest's memory Wen Congyang
2012-04-02  2:54   ` Wen Congyang
2012-04-02  3:16   ` [Qemu-devel] [PATCH 12/12 v11.5] " Wen Congyang
2012-03-28  5:17 ` [Qemu-devel] [PATCH 00/12 v11] introducing a new, dedicated guest memory dump mechanism Wen Congyang
2012-03-28 12:44   ` Luiz Capitulino
2012-04-02  3:19     ` Wen Congyang
2012-04-03  7:35       ` Jan Kiszka

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