/* Copyright (C) 1999, 2000, 2001, 2002 Free Software Foundation, Inc. This file is part of the GNU C Library. Written by Jes Sorensen, <Jes.Sorensen@cern.ch>, April 1999. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. In addition to the permissions in the GNU Lesser General Public License, the Free Software Foundation gives you unlimited permission to link the compiled version of this file with other programs, and to distribute those programs without any restriction coming from the use of this file. (The GNU Lesser General Public License restrictions do apply in other respects; for example, they cover modification of the file, and distribution when not linked into another program.) Note that people who make modified versions of this file are not obligated to grant this special exception for their modified versions; it is their choice whether to do so. The GNU Lesser General Public License gives permission to release a modified version without this exception; this exception also makes it possible to release a modified version which carries forward this exception. The GNU C Library 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ #define __ASSEMBLY__ #include "sysdep.h" #include <asm/unistd.h> #include <asm/fpu.h> /* * Arguments for __uClibc_main: * out0: main * out1: argc * out2: argv * out3: init * out4: fini * out5: rtld_fini * out6: stack_end */ #if defined(__UCLIBC_CTOR_DTOR__) .type _init,%function .type _fini,%function #else .weak _init .weak _fini #endif .align 32 .global _start .proc _start .type _start,@function _start: .prologue .save rp, r0 .body .prologue { .mlx alloc r2 = ar.pfs,0,0,7,0 movl r3 = FPSR_DEFAULT } { .mlx adds out2 = 16, sp /* get address of argc value */ movl gp = @gprel(0f) ;; } 0: { .mmi ld8 out1 = [out2], 8 /* load argc and move out2 to become argv */ mov.m r10 = ar.bsp /* fetch rbs base address */ mov r9 = ip ;; } { .mii mov ar.fpsr = r3 sub gp = r9, gp /* back-compute gp value */ adds out6 = 16, sp /* highest non-environment stack address */ ;; } { addl r11 = @ltoff(__libc_ia64_register_backing_store_base), gp addl out0 = @ltoff(@fptr(main)), gp addl out3 = @ltoff(@fptr(_init)), gp ;; } { .mmi ld8 r3 = [r11] /* pointer to __libc_ia64_register_backing_store_base */ ld8 out0 = [out0] /* pointer to `main' function descriptor */ addl out4 = @ltoff(@fptr(_fini)), gp ;; } { .mmi ld8 out3 = [out3] /* pointer to `init' function descriptor */ ld8 out4 = [out4] /* pointer to `fini' function descriptor */ nop 0 } .body { .mib st8 [r3] = r10 mov out5 = ret0 /* dynamic linker destructor */ br.call.sptk.few rp = __uClibc_main } { .mib break 0 /* break miserably if we ever return */ } .endp _start /* Define a symbol for the first piece of initialized data. */ .data .globl __data_start __data_start: .long 0 .weak data_start data_start = __data_start .common __libc_ia64_register_backing_store_base, 8, 8