/* Copyright (C) 2000, 2001, 2003 Free Software Foundation, Inc. This file was pretty much copied from newlib. This file is part of GCC. GCC 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. In addition to the permissions in the GNU General Public License, the Free Software Foundation gives you unlimited permission to link the compiled version of this file into combinations with other programs, and to distribute those combinations without any restriction coming from the use of this file. (The General Public License restrictions do apply in other respects; for example, they cover modification of the file, and distribution when not linked into a combine executable.) GCC 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 this program; see the file COPYING. If not, write to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #ifdef __SH5__ .section .data,"aw" .global ___data ___data: .section .rodata,"a" .global ___rodata ___rodata: #if __SH5__ == 64 .section .text,"ax" #define LOAD_ADDR(sym, reg) \ movi (sym >> 48) & 65535, reg; \ shori (sym >> 32) & 65535, reg; \ shori (sym >> 16) & 65535, reg; \ shori sym & 65535, reg #else .mode SHmedia .section .text..SHmedia32,"ax" #define LOAD_ADDR(sym, reg) \ movi (sym >> 16) & 65535, reg; \ shori sym & 65535, reg #endif .global start start: LOAD_ADDR (_stack, r15) pt/l .Lzero_bss_loop, tr0 pt/l _atexit, tr1 pt/l _init, tr5 pt/l ___setup_argv_and_call_main, tr6 pt/l _exit, tr7 ! zero out bss LOAD_ADDR (_edata, r0) LOAD_ADDR (_end, r1) .Lzero_bss_loop: stx.q r0, r63, r63 addi r0, 8, r0 bgt/l r1, r0, tr0 LOAD_ADDR (___data, r26) LOAD_ADDR (___rodata, r27) #if ! __SH4_NOFPU__ && ! __SH2A_NOFPU__ #if __SH5__ == 32 pt/l ___set_fpscr, tr0 movi 0, r4 blink tr0, r18 #endif getcon sr, r0 ! enable the FP unit, by resetting SR.FD ! also zero out SR.FR, SR.SZ and SR.PR, as mandated by the ABI movi 0, r1 shori 0xf000, r1 andc r0, r1, r0 putcon r0, sr #endif ! arrange for exit to call fini LOAD_ADDR (_fini, r2) blink tr1, r18 ! call init blink tr5, r18 ! call the mainline blink tr6, r18 ! call exit blink tr7, r18 #else .section .text .global start start: mov.l stack_k,r15 ! zero out bss mov.l edata_k,r0 mov.l end_k,r1 mov #0,r2 start_l: mov.l r2,@r0 add #4,r0 cmp/ge r0,r1 bt start_l #if ! __SH2A_NOFPU__ #if defined (__SH2E__) || defined (__SH2A__) || defined (__SH3E__) || defined(__SH4_SINGLE__) || defined(__SH4__) || defined(__SH4_SINGLE_ONLY__) mov.l set_fpscr_k, r1 jsr @r1 mov #0,r4 lds r3,fpscr #endif /* defined (__SH2E__) || defined (__SH2A__) || defined (__SH3E__) || defined(__SH4_SINGLE__) || defined(__SH4__) || defined(__SH4_SINGLE_ONLY__) */ #endif /* ! __SH2A_NOFPU__ */ ! arrange for exit to call fini mov.l atexit_k,r0 mov.l fini_k,r4 jsr @r0 nop ! call init mov.l init_k,r0 jsr @r0 nop ! call the mainline mov.l main_k,r0 jsr @r0 nop ! call exit mov r0,r4 mov.l exit_k,r0 jsr @r0 nop .align 2 #if ! __SH2A_NOFPU__ #if defined (__SH2E__) || defined (__SH2A__) || defined (__SH3E__) || defined(__SH4_SINGLE__) || defined(__SH4__) || defined(__SH4_SINGLE_ONLY__) set_fpscr_k: .long ___set_fpscr #endif /* defined (__SH2E__) || defined (__SH2A__) || defined (__SH3E__) || defined(__SH4_SINGLE__) || defined(__SH4__) || defined(__SH4_SINGLE_ONLY__) */ #endif /* ! __SH2A_NOFPU__ */ stack_k: .long _stack edata_k: .long _edata end_k: .long _end main_k: .long ___setup_argv_and_call_main exit_k: .long _exit atexit_k: .long _atexit init_k: .long _init fini_k: .long _fini ! supplied for backward compatibility only, in case of linking ! code whose main() was compiled with an older version of GCC. .global ___main ___main: rts nop #endif