/* $NetBSD: crt0-efi-ia64.S,v 1.1.1.2 2021/09/30 18:50:09 jmcneill Exp $ */ /* crt0-efi-ia64.S - IA-64 EFI startup code. Copyright (C) 1999 Hewlett-Packard Co. Contributed by David Mosberger . All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name of Hewlett-Packard Co. nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANYDIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ .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), must be aligned by 32 Bits 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