This adds a very simple elf64 loader via program headers, similar
to load_elf_image_phdr() that we already have.
Signed-off-by: Bin Meng <bmeng...@gmail.com>
---
cmd/elf.c | 34 ++++++++++++++++++++++++++++++++++
1 file changed, 34 insertions(+)
diff --git a/cmd/elf.c b/cmd/elf.c
index 501f935..91a04da 100644
--- a/cmd/elf.c
+++ b/cmd/elf.c
@@ -24,6 +24,37 @@
#endif
/*
+ * A very simple elf64 loader, assumes the image is valid, returns the
+ * entry point address.
+ */
+static unsigned long load_elf64_image_phdr(unsigned long addr)
+{
+ Elf64_Ehdr *ehdr; /* Elf header structure pointer */
+ Elf64_Phdr *phdr; /* Program header structure pointer */
+ int i;
+
+ ehdr = (Elf64_Ehdr *)addr;
+ phdr = (Elf64_Phdr *)(addr + (ulong)ehdr->e_phoff);
+
+ /* Load each program header */
+ for (i = 0; i < ehdr->e_phnum; ++i) {
+ void *dst = (void *)(ulong)phdr->p_paddr;
+ void *src = (void *)addr + phdr->p_offset;
+ debug("Loading phdr %i to 0x%p (%lu bytes)\n",
+ i, dst, (ulong)phdr->p_filesz);
+ if (phdr->p_filesz)
+ memcpy(dst, src, phdr->p_filesz);
+ if (phdr->p_filesz != phdr->p_memsz)
+ memset(dst + phdr->p_filesz, 0x00,
+ phdr->p_memsz - phdr->p_filesz);
+ flush_cache((unsigned long)dst, phdr->p_filesz);
+ ++phdr;
+ }
+
+ return ehdr->e_entry;
+}
+
+/*
* A very simple elf loader, assumes the image is valid, returns the
* entry point address.
*/
@@ -34,6 +65,9 @@ static unsigned long load_elf_image_phdr(unsigned long addr)
int i;
ehdr = (Elf32_Ehdr *)addr;
+ if (ehdr->e_ident[EI_CLASS] == ELFCLASS64)
+ return load_elf64_image_phdr(addr);
+
phdr = (Elf32_Phdr *)(addr + ehdr->e_phoff);
/* Load each program header */
--
2.7.4
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