From e403e433c1a30568a019cac9ba7301f8d5d7a382 Mon Sep 17 00:00:00 2001
From: Stefan Weil <weil@mail.berlios.de>
Date: Mon, 9 Aug 2010 16:43:53 +0200
Subject: [PATCH] elf: Calculate symbol size if needed

Symbols with a size of 0 are unusable for the disassembler.

Example:

While running an arm linux kernel, no symbolic names are
used in qemu.log when the cpu is executing an assembler function.

Assume that the size of such symbols is the difference to the
next symbol value.

Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
---
 hw/elf_ops.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/hw/elf_ops.h b/hw/elf_ops.h
index 27d1ab9bc2..0bd72350b4 100644
--- a/hw/elf_ops.h
+++ b/hw/elf_ops.h
@@ -153,6 +153,11 @@ static int glue(load_symbols, SZ)(struct elfhdr *ehdr, int fd, int must_swab,
         syms = qemu_realloc(syms, nsyms * sizeof(*syms));
 
         qsort(syms, nsyms, sizeof(*syms), glue(symcmp, SZ));
+        for (i = 0; i < nsyms - 1; i++) {
+            if (syms[i].st_size == 0) {
+                syms[i].st_size = syms[i + 1].st_value - syms[i].st_value;
+            }
+        }
     } else {
         qemu_free(syms);
         syms = NULL;