dump: Set correct vaddr for ELF dump
vaddr needs to be equal to the paddr since the dump file represents the
physical memory image.
Without setting vaddr correctly, GDB would load all the different memory
regions on top of each other to vaddr 0, thus making GDB showing the wrong
memory data for a given address.
Signed-off-by: Jon Doron <arilou@gmail.com>
Message-Id: <20190109082203.27142-1-arilou@gmail.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Tested-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
diff --git a/dump.c b/dump.c
index ef1d802..107a671 100644
--- a/dump.c
+++ b/dump.c
@@ -192,7 +192,7 @@
phdr.p_paddr = cpu_to_dump64(s, memory_mapping->phys_addr);
phdr.p_filesz = cpu_to_dump64(s, filesz);
phdr.p_memsz = cpu_to_dump64(s, memory_mapping->length);
- phdr.p_vaddr = cpu_to_dump64(s, memory_mapping->virt_addr);
+ phdr.p_vaddr = cpu_to_dump64(s, memory_mapping->virt_addr) ?: phdr.p_paddr;
assert(memory_mapping->length >= filesz);
@@ -216,7 +216,8 @@
phdr.p_paddr = cpu_to_dump32(s, memory_mapping->phys_addr);
phdr.p_filesz = cpu_to_dump32(s, filesz);
phdr.p_memsz = cpu_to_dump32(s, memory_mapping->length);
- phdr.p_vaddr = cpu_to_dump32(s, memory_mapping->virt_addr);
+ phdr.p_vaddr =
+ cpu_to_dump32(s, memory_mapping->virt_addr) ?: phdr.p_paddr;
assert(memory_mapping->length >= filesz);
diff --git a/scripts/dump-guest-memory.py b/scripts/dump-guest-memory.py
index 198cd0f..2c587cb 100644
--- a/scripts/dump-guest-memory.py
+++ b/scripts/dump-guest-memory.py
@@ -163,6 +163,7 @@
phdr = get_arch_phdr(self.endianness, self.elfclass)
phdr.p_type = p_type
phdr.p_paddr = p_paddr
+ phdr.p_vaddr = p_paddr
phdr.p_filesz = p_size
phdr.p_memsz = p_size
self.segments.append(phdr)
