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authorLiam Merwick <liam.merwick@oracle.com>2019-01-15 12:18:03 +0000
committerPaolo Bonzini <pbonzini@redhat.com>2019-02-05 16:50:16 +0100
commit4366e1db16a3ec7bf24171e5c7619c8ea038e43b (patch)
tree6792ae0a31de33061b9f32b182524e033d91e84d /hw/s390x
parentd455ebc4f827c14a29240db17931e170b6937c6c (diff)
downloadfocaccia-qemu-4366e1db16a3ec7bf24171e5c7619c8ea038e43b.tar.gz
focaccia-qemu-4366e1db16a3ec7bf24171e5c7619c8ea038e43b.zip
elf: Add optional function ptr to load_elf() to parse ELF notes
This patch adds an optional function pointer, 'elf_note_fn', to
load_elf() which causes load_elf() to additionally parse any
ELF program headers of type PT_NOTE and check to see if the ELF
Note is of the type specified by the 'translate_opaque' arg.
If a matching ELF Note is found then the specfied function pointer
is called to process the ELF note.

Passing a NULL function pointer results in ELF Notes being skipped.

The first consumer of this functionality is the PVHboot support
which needs to read the XEN_ELFNOTE_PHYS32_ENTRY ELF Note while
loading the uncompressed kernel binary in order to discover the
boot entry address for the x86/HVM direct boot ABI.

Signed-off-by: Liam Merwick <liam.merwick@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'hw/s390x')
-rw-r--r--hw/s390x/ipl.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/hw/s390x/ipl.c b/hw/s390x/ipl.c
index 21f64ad26a..896888bf8f 100644
--- a/hw/s390x/ipl.c
+++ b/hw/s390x/ipl.c
@@ -131,7 +131,8 @@ static void s390_ipl_realize(DeviceState *dev, Error **errp)
             goto error;
         }
 
-        bios_size = load_elf(bios_filename, bios_translate_addr, &fwbase,
+        bios_size = load_elf(bios_filename, NULL,
+                             bios_translate_addr, &fwbase,
                              &ipl->bios_start_addr, NULL, NULL, 1,
                              EM_S390, 0, 0);
         if (bios_size > 0) {
@@ -155,7 +156,8 @@ static void s390_ipl_realize(DeviceState *dev, Error **errp)
     }
 
     if (ipl->kernel) {
-        kernel_size = load_elf(ipl->kernel, NULL, NULL, &pentry, NULL,
+        kernel_size = load_elf(ipl->kernel, NULL, NULL, NULL,
+                               &pentry, NULL,
                                NULL, 1, EM_S390, 0, 0);
         if (kernel_size < 0) {
             kernel_size = load_image_targphys(ipl->kernel, 0, ram_size);
@@ -436,7 +438,8 @@ static int load_netboot_image(Error **errp)
         goto unref_mr;
     }
 
-    img_size = load_elf_ram(netboot_filename, NULL, NULL, &ipl->start_addr,
+    img_size = load_elf_ram(netboot_filename, NULL, NULL, NULL,
+                            &ipl->start_addr,
                             NULL, NULL, 1, EM_S390, 0, 0, NULL, false);
 
     if (img_size < 0) {