| 0,0 → 1,74 |
|---|
| /* crt0-efi-ia64.S - IA-64 EFI startup code. |
| Copyright (C) 1999 Hewlett-Packard Co. |
| Contributed by David Mosberger <davidm@hpl.hp.com>. |
| |
| This file is part of GNU-EFI, the GNU EFI development environment. |
| |
| GNU EFI is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU EFI is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU EFI; see the file COPYING. If not, write to the Free |
| Software Foundation, 59 Temple Place - Suite 330, Boston, MA |
| 02111-1307, USA. */ |
| |
| .text |
| .psr abi64 |
| .psr lsb |
| .lsb |
| |
| .proc _start |
| _start: |
| alloc loc0=ar.pfs,2,2,2,0 |
| mov loc1=rp |
| movl out0=@gprel(ImageBase) // out0 <- ImageBase (ldbase) |
| ;; |
| add out0=out0,gp |
| movl out1=@gprel(_DYNAMIC) // out1 <- _DYNAMIC |
| ;; // avoid WAW on CFM |
| add out1=out1,gp |
| br.call.sptk.few rp=_relocate |
| .Lret0: |
| cmp.ne p6,p0=r0,r8 // r8 == EFI_SUCCESS? |
| (p6) br.cond.sptk.few .exit // no -> |
| |
| .Lret1: |
| |
| mov out0=in0 // image handle |
| mov out1=in1 // systab |
| br.call.sptk.few rp=efi_main |
| .Lret2: |
| .exit: |
| mov ar.pfs=loc0 |
| mov rp=loc1 |
| ;; |
| br.ret.sptk.few rp |
| |
| .endp _start |
| |
| |
| // PE32+ wants a PLABEL, not the code address of the entry point: |
| |
| .align 16 |
| .global _start_plabel |
| .section .plabel, "a" |
| _start_plabel: |
| data8 _start |
| data8 __gp |
| |
| // hand-craft a .reloc section for the plabel: |
| |
| #define IMAGE_REL_BASED_DIR64 10 |
| |
| .section .reloc, "a" |
| data4 _start_plabel // Page RVA |
| data4 12 // Block Size (2*4+2*2) |
| data2 (IMAGE_REL_BASED_DIR64<<12) + 0 // reloc for plabel's entry point |
| data2 (IMAGE_REL_BASED_DIR64<<12) + 8 // reloc for plabel's global pointer |