Rev 2726 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2726 | vana | 1 | /* crt0-efi-ia64.S - IA-64 EFI startup code. |
| 2 | Copyright (C) 1999 Hewlett-Packard Co. |
||
| 3 | Contributed by David Mosberger <davidm@hpl.hp.com>. |
||
| 4 | |||
| 5 | This file is part of GNU-EFI, the GNU EFI development environment. |
||
| 6 | |||
| 7 | GNU EFI is free software; you can redistribute it and/or modify |
||
| 8 | it under the terms of the GNU General Public License as published by |
||
| 9 | the Free Software Foundation; either version 2, or (at your option) |
||
| 10 | any later version. |
||
| 11 | |||
| 12 | GNU EFI is distributed in the hope that it will be useful, |
||
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
||
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||
| 15 | GNU General Public License for more details. |
||
| 16 | |||
| 17 | You should have received a copy of the GNU General Public License |
||
| 18 | along with GNU EFI; see the file COPYING. If not, write to the Free |
||
| 19 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA |
||
| 20 | 02111-1307, USA. */ |
||
| 21 | |||
| 22 | .text |
||
| 23 | .psr abi64 |
||
| 24 | .psr lsb |
||
| 25 | .lsb |
||
| 26 | |||
| 27 | .proc _start |
||
| 28 | _start: |
||
| 29 | alloc loc0=ar.pfs,2,2,2,0 |
||
| 30 | mov loc1=rp |
||
| 31 | movl out0=@gprel(ImageBase) // out0 <- ImageBase (ldbase) |
||
| 32 | ;; |
||
| 33 | add out0=out0,gp |
||
| 34 | movl out1=@gprel(_DYNAMIC) // out1 <- _DYNAMIC |
||
| 35 | ;; // avoid WAW on CFM |
||
| 36 | add out1=out1,gp |
||
| 37 | br.call.sptk.few rp=_relocate |
||
| 38 | .Lret0: |
||
| 39 | cmp.ne p6,p0=r0,r8 // r8 == EFI_SUCCESS? |
||
| 40 | (p6) br.cond.sptk.few .exit // no -> |
||
| 41 | |||
| 42 | .Lret1: |
||
| 43 | |||
| 44 | mov out0=in0 // image handle |
||
| 45 | mov out1=in1 // systab |
||
| 46 | br.call.sptk.few rp=efi_main |
||
| 47 | .Lret2: |
||
| 48 | .exit: |
||
| 49 | mov ar.pfs=loc0 |
||
| 50 | mov rp=loc1 |
||
| 51 | ;; |
||
| 52 | br.ret.sptk.few rp |
||
| 53 | |||
| 54 | .endp _start |
||
| 55 | |||
| 56 | |||
| 57 | // PE32+ wants a PLABEL, not the code address of the entry point: |
||
| 58 | |||
| 59 | .align 16 |
||
| 60 | .global _start_plabel |
||
| 61 | .section .plabel, "a" |
||
| 62 | _start_plabel: |
||
| 63 | data8 _start |
||
| 64 | data8 __gp |
||
| 65 | |||
| 66 | // hand-craft a .reloc section for the plabel: |
||
| 67 | |||
| 68 | #define IMAGE_REL_BASED_DIR64 10 |
||
| 69 | |||
| 70 | .section .reloc, "a" |
||
| 71 | data4 _start_plabel // Page RVA |
||
| 72 | data4 12 // Block Size (2*4+2*2) |
||
| 73 | data2 (IMAGE_REL_BASED_DIR64<<12) + 0 // reloc for plabel's entry point |
||
| 74 | data2 (IMAGE_REL_BASED_DIR64<<12) + 8 // reloc for plabel's global pointer |