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| author | Peter Maydell <peter.maydell@linaro.org> | 2017-09-04 15:21:53 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2017-09-04 15:21:53 +0100 |
| commit | f33e5e6299288c945380e3ce3ea9d2406277c289 (patch) | |
| tree | bc845ad69d3a452acac70ff904000adc2efc17c4 /include/hw/elf_ops.h | |
| parent | bf1733392ca22f593cac77534f88ee6d6810837e (diff) | |
| download | qemu-f33e5e6299288c945380e3ce3ea9d2406277c289.tar.gz | |
loader: Ignore zero-sized ELF segments
Some ELF files have program headers that specify segments that
are of zero size. Ignore them, rather than trying to create
zero-length ROM blobs for them, because the zero-length blob
can falsely trigger the overlapping-ROM-blobs check.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Hua Yanghao <huayanghao@gmail.com>
Message-id: 1502116754-18867-3-git-send-email-peter.maydell@linaro.org
Diffstat (limited to 'include/hw/elf_ops.h')
| -rw-r--r-- | include/hw/elf_ops.h | 24 |
1 files changed, 17 insertions, 7 deletions
diff --git a/include/hw/elf_ops.h b/include/hw/elf_ops.h index 2e526d3663..d192e7e2a3 100644 --- a/include/hw/elf_ops.h +++ b/include/hw/elf_ops.h @@ -451,14 +451,24 @@ static int glue(load_elf, SZ)(const char *name, int fd, *pentry = ehdr.e_entry - ph->p_vaddr + ph->p_paddr; } - if (load_rom) { - snprintf(label, sizeof(label), "phdr #%d: %s", i, name); - - /* rom_add_elf_program() seize the ownership of 'data' */ - rom_add_elf_program(label, data, file_size, mem_size, addr, as); - } else { - cpu_physical_memory_write(addr, data, file_size); + if (mem_size == 0) { + /* Some ELF files really do have segments of zero size; + * just ignore them rather than trying to create empty + * ROM blobs, because the zero-length blob can falsely + * trigger the overlapping-ROM-blobs check. + */ g_free(data); + } else { + if (load_rom) { + snprintf(label, sizeof(label), "phdr #%d: %s", i, name); + + /* rom_add_elf_program() seize the ownership of 'data' */ + rom_add_elf_program(label, data, file_size, mem_size, + addr, as); + } else { + cpu_physical_memory_write(addr, data, file_size); + g_free(data); + } } total_size += mem_size; |