X-Git-Url: https://vcs.maemo.org/git/?a=blobdiff_plain;f=elf_ops.h;h=173d12f05a7212888c354615c04dd614ab966e9e;hb=d7e4b87e53923542c1a7220e08bcae2252f5a22e;hp=a7d027e1abbf28a5867d9ff2f20b03d42e99c992;hpb=5fe141fd30d35516eac3674f7b62be51ba34543f;p=qemu

diff --git a/elf_ops.h b/elf_ops.h
index a7d027e..173d12f 100644
--- a/elf_ops.h
+++ b/elf_ops.h
@@ -49,7 +49,7 @@ static void glue(bswap_sym, SZ)(struct elf_sym *sym)
     bswap16s(&sym->st_shndx);
 }
 
-static struct elf_shdr *glue(find_section, SZ)(struct elf_shdr *shdr_table, 
+static struct elf_shdr *glue(find_section, SZ)(struct elf_shdr *shdr_table,
                                                int n, int type)
 {
     int i;
@@ -71,17 +71,17 @@ static int glue(load_symbols, SZ)(struct elfhdr *ehdr, int fd, int must_swab)
     int nsyms, i;
     char *str = NULL;
 
-    shdr_table = load_at(fd, ehdr->e_shoff, 
+    shdr_table = load_at(fd, ehdr->e_shoff,
                          sizeof(struct elf_shdr) * ehdr->e_shnum);
     if (!shdr_table)
         return -1;
-    
+
     if (must_swab) {
         for (i = 0; i < ehdr->e_shnum; i++) {
             glue(bswap_shdr, SZ)(shdr_table + i);
         }
     }
-        
+
     symtab = glue(find_section, SZ)(shdr_table, ehdr->e_shnum, SHT_SYMTAB);
     if (!symtab)
         goto fail;
@@ -138,13 +138,16 @@ static int glue(load_symbols, SZ)(struct elfhdr *ehdr, int fd, int must_swab)
     return -1;
 }
 
-int glue(load_elf, SZ)(int fd, int64_t virt_to_phys_addend, int must_swab)
+int glue(load_elf, SZ)(int fd, int64_t virt_to_phys_addend,
+                       int must_swab, uint64_t *pentry,
+                       uint64_t *lowaddr, uint64_t *highaddr)
 {
     struct elfhdr ehdr;
     struct elf_phdr *phdr = NULL, *ph;
     int size, i, total_size;
-    elf_word mem_size, addr;
-    uint8_t *data;
+    elf_word mem_size;
+    uint64_t addr, low = 0, high = 0;
+    uint8_t *data = NULL;
 
     if (read(fd, &ehdr, sizeof(ehdr)) != sizeof(ehdr))
         goto fail;
@@ -152,6 +155,12 @@ int glue(load_elf, SZ)(int fd, int64_t virt_to_phys_addend, int must_swab)
         glue(bswap_ehdr, SZ)(&ehdr);
     }
 
+    if (ELF_MACHINE != ehdr.e_machine)
+        goto fail;
+
+    if (pentry)
+   	*pentry = (uint64_t)ehdr.e_entry;
+
     glue(load_symbols, SZ)(&ehdr, fd, must_swab);
 
     size = ehdr.e_phnum * sizeof(phdr[0]);
@@ -167,7 +176,7 @@ int glue(load_elf, SZ)(int fd, int64_t virt_to_phys_addend, int must_swab)
             glue(bswap_phdr, SZ)(ph);
         }
     }
-    
+
     total_size = 0;
     for(i = 0; i < ehdr.e_phnum; i++) {
         ph = &phdr[i];
@@ -176,7 +185,8 @@ int glue(load_elf, SZ)(int fd, int64_t virt_to_phys_addend, int must_swab)
             /* XXX: avoid allocating */
             data = qemu_mallocz(mem_size);
             if (ph->p_filesz > 0) {
-                lseek(fd, ph->p_offset, SEEK_SET);
+                if (lseek(fd, ph->p_offset, SEEK_SET) < 0)
+                    goto fail;
                 if (read(fd, data, ph->p_filesz) != ph->p_filesz)
                     goto fail;
             }
@@ -185,13 +195,23 @@ int glue(load_elf, SZ)(int fd, int64_t virt_to_phys_addend, int must_swab)
             cpu_physical_memory_write_rom(addr, data, mem_size);
 
             total_size += mem_size;
+            if (!low || addr < low)
+                low = addr;
+            if (!high || (addr + mem_size) > high)
+                high = addr + mem_size;
 
             qemu_free(data);
+            data = NULL;
         }
     }
+    qemu_free(phdr);
+    if (lowaddr)
+        *lowaddr = (uint64_t)low;
+    if (highaddr)
+        *highaddr = (uint64_t)high;
     return total_size;
  fail:
+    qemu_free(data);
     qemu_free(phdr);
     return -1;
 }
-