On 04/02/2014 03:10 AM, FengHua wrote:
-----Original Messages----- From: "York Sun" yorksun@freescale.com Sent Time: 2014-03-22 02:10:39 (Saturday) To: "Scott Wood" scottwood@freescale.com Cc: FengHua fenghua@phytium.com.cn, "u-boot@lists.denx.de" u-boot@lists.denx.de Subject: CONFIG_REMAKE_ELF for aarch64
Scott,
I am having a problem recreating u-boot.elf for aarch64 targets. The file is OK when Ttext is aligned with 64KB boundary, for example 0x30000000. But if I use 0x30001000 as the text base, the result u-boot.elf has additional offset of 0x10000. For example, the first instruction should be (from objdump)
30001000: 1400000a b 30001028
But it is
30011000: 1400000a b 30011028
My gcc version is
gcc version 4.8.3 20131202 (prerelease) (crosstool-NG linaro-1.13.1-4.8-2013.12
- Linaro GCC 2013.11)
GNU ld (crosstool-NG linaro-1.13.1-4.8-2013.12 - Linaro GCC 2013.11) 2.24.0.20131220 Supported emulations: aarch64linux aarch64elf aarch64elf32 aarch64elf32b aarch64elfb armelf armelfb aarch64linuxb aarch64linux32 aarch64linux32b armelfb_linux_eabi armelf_linux_eabi
I am hoping you or someone familiar with ABI or something related and shed some light.
York
Maybe this is a bug of aarch64 tool chain.
Scott suspects it is an alignment issue with the toolchain. But we didn't get the bottom of it.
York