On Thu, Jun 14, 2018 at 8:27 AM, Ivan Gorinov <ivan.gori...@intel.com> wrote: > UEFI specifies the calling convention used in Microsoft compilers; > first arguments of a function are passed in (%rcx, %rdx, %r8, %r9). > > All other compilers use System V ABI by default, passing first integer > arguments of a function in (%rdi, %rsi, %rdx, %rcx, %r8, %r9). > > These ABI also specify different sets of registers that must be preserved > across function calls (callee-saved). > > GCC allows using the Microsoft calling convention by adding the ms_abi > attribute to a function declaration. > > Current EFI implementation in U-Boot specifies EFIAPI for efi_main() > in the test apps but uses default calling convention in lib/efi. > > Save efi_main() arguments in the startup code on x86_64; > use EFI calling convention for _relocate() on x86_64; > consistently use EFI calling convention for efi_main() everywhere. > > Signed-off-by: Ivan Gorinov <ivan.gori...@intel.com> > --- > arch/x86/lib/crt0_x86_64_efi.S | 24 +++++++++++++----------- > lib/efi/efi_app.c | 3 ++- > lib/efi/efi_stub.c | 3 ++- > 3 files changed, 17 insertions(+), 13 deletions(-) >
Reviewed-by: Bin Meng <bmeng...@gmail.com> Tested-by: Bin Meng <bmeng...@gmail.com> _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
