1. 31 Aug, 2017 1 commit
    • Masahiro Yamada's avatar
      asm_macros: set the default assembly code alignment to 4 byte · fed18b3a
      Masahiro Yamada authored
      Assembly routines are usually defined by using "func" and "endfunc":
      
          func foo
            ...
          endfunc foo
      
      Currently, the "func" macro does not specify ".align" directive
      by default.  It causes unaligned instruction under some circumstances.
      
      As far as I tested, this problem happens for GCC 5 or older.  It did
      not happen for GCC 6 or newer.  Taking into account that GCC 4.x / 5.x
      is still used, make sure that assembly code is at least 4 byte aligned.
      
      [ How to reproduce the problem ]
      
      For example, use GCC 5.3 downloaded from Linaro:
      http://releases.linaro.org/components/toolchain/binaries/5.3-2016.05/
      aarch64-linux-gnu/gcc-linaro-5.3.1-2016.05-x86_64_aarch64-linux-gnu.tar.xz
      
      Expand mbedtls-2.4.2 to the current directory.
      
      Try the following:
      
        $ git log --oneline -1
        77544efb
      
       Merge pull request #1071 from jeenu-arm/syntax-fix
        $ aarch64-linux-gnu-gcc --version | head -1
        aarch64-linux-gnu-gcc (Linaro GCC 5.3-2016.05) 5.3.1 20160412
        $ make CROSS_COMPILE=aarch64-linux-gnu- PLAT=uniphier \
          TRUSTED_BOARD_BOOT=1 MBEDTLS_DIR=mbedtls-2.4.2
          ( snip build log )
        $ aarch64-linux-gnu-nm build/uniphier/release/bl1/bl1.elf | grep handler
        00000000800088f4 T bl1_fwu_smc_handler
        00000000800084c8 T bl1_smc_handler
        000000008000a6e0 t _panic_handler
        000000008000a8e0 W plat_error_handler
        000000008000a8e8 W plat_panic_handler
        000000008000a8d8 W plat_reset_handler
        000000008000a39f T reset_handler
        000000008000a367 t smc_handler
        000000008000a2ef t smc_handler64
      
      You will notice "smc_handler64", "reset_handler", etc. are not properly
      aligned.
      Signed-off-by: default avatarMasahiro Yamada <yamada.masahiro@socionext.com>
      fed18b3a
  2. 30 Aug, 2017 8 commits
  3. 29 Aug, 2017 16 commits
  4. 25 Aug, 2017 8 commits
  5. 24 Aug, 2017 7 commits