projects / OpenSPARC-T2-DV / blame
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| 86530b38 AT |
1 | /* |
| 2 | * ========== Copyright Header Begin ========================================== | |
| 3 | * | |
| 4 | * OpenSPARC T2 Processor File: stackinit_st.s | |
| 5 | * Copyright (C) 1995-2007 Sun Microsystems, Inc. All Rights Reserved | |
| 6 | * 4150 Network Circle, Santa Clara, California 95054, U.S.A. | |
| 7 | * | |
| 8 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 9 | * | |
| 10 | * This program is free software; you can redistribute it and/or modify | |
| 11 | * it under the terms of the GNU General Public License as published by | |
| 12 | * the Free Software Foundation; version 2 of the License. | |
| 13 | * | |
| 14 | * This program is distributed in the hope that it will be useful, | |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 17 | * GNU General Public License for more details. | |
| 18 | * | |
| 19 | * You should have received a copy of the GNU General Public License | |
| 20 | * along with this program; if not, write to the Free Software | |
| 21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 22 | * | |
| 23 | * For the avoidance of doubt, and except that if any non-GPL license | |
| 24 | * choice is available it will apply instead, Sun elects to use only | |
| 25 | * the General Public License version 2 (GPLv2) at this time for any | |
| 26 | * software where a choice of GPL license versions is made | |
| 27 | * available with the language indicating that GPLv2 or any later version | |
| 28 | * may be used, or where a choice of which version of the GPL is applied is | |
| 29 | * otherwise unspecified. | |
| 30 | * | |
| 31 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 32 | * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 33 | * have any questions. | |
| 34 | * | |
| 35 | * | |
| 36 | * ========== Copyright Header End ============================================ | |
| 37 | */ | |
| 38 | #include "defines.h" | |
| 39 | ||
| 40 | #define SP_OFFSET (STACKSIZE-4095) | |
| 41 | #define INIT_LOCAL_REGS \ | |
| 42 | set 0x0, %l0; \ | |
| 43 | set 0x0, %l1; \ | |
| 44 | set 0x0, %l2; \ | |
| 45 | set 0x0, %l3; \ | |
| 46 | set 0x0, %l4; \ | |
| 47 | set 0x0, %l5; \ | |
| 48 | set 0x0, %l6; \ | |
| 49 | set 0x0, %l7; \ | |
| 50 | set 0x0, %i0; \ | |
| 51 | set 0x0, %i1; \ | |
| 52 | set 0x0, %i2; \ | |
| 53 | set 0x0, %i3; \ | |
| 54 | set 0x0, %i4; \ | |
| 55 | set 0x0, %i5; \ | |
| 56 | set 0x0, %i6; \ | |
| 57 | set 0x0, %i7; | |
| 58 | ||
| 59 | ||
| 60 | .section .text | |
| 61 | .align 4 | |
| 62 | .global c_start | |
| 63 | ||
| 64 | c_start: | |
| 65 | ||
| 66 | ! register init - avoid mismatches in spill/fill traps | |
| 67 | ||
| 68 | ta T_CHANGE_PRIV | |
| 69 | ||
| 70 | wrpr %g0, 0, %cwp | |
| 71 | INIT_LOCAL_REGS | |
| 72 | wrpr %g0, 1, %cwp | |
| 73 | INIT_LOCAL_REGS | |
| 74 | wrpr %g0, 2, %cwp | |
| 75 | INIT_LOCAL_REGS | |
| 76 | wrpr %g0, 3, %cwp | |
| 77 | INIT_LOCAL_REGS | |
| 78 | wrpr %g0, 4, %cwp | |
| 79 | INIT_LOCAL_REGS | |
| 80 | wrpr %g0, 5, %cwp | |
| 81 | INIT_LOCAL_REGS | |
| 82 | wrpr %g0, 6, %cwp | |
| 83 | INIT_LOCAL_REGS | |
| 84 | wrpr %g0, 7, %cwp | |
| 85 | INIT_LOCAL_REGS | |
| 86 | wrpr %g0, 0, %cwp | |
| 87 | ||
| 88 | ta T_CHANGE_NONPRIV | |
| 89 | ||
| 90 | ||
| 91 | ||
| 92 | ! set up stack | |
| 93 | setx stacklocs, %l5, %l0 | |
| 94 | ldx [%l0], %sp | |
| 95 | ||
| 96 | ! call main | |
| 97 | ||
| 98 | call main | |
| 99 | nop | |
| 100 | ||
| 101 | brnz %o0, c_fail | |
| 102 | nop | |
| 103 | ||
| 104 | ta T_GOOD_TRAP | |
| 105 | nop | |
| 106 | ||
| 107 | c_fail: | |
| 108 | ta T_BAD_TRAP | |
| 109 | nop | |
| 110 | ||
| 111 | ||
| 112 | ||
| 113 | /* | |
| 114 | stack0: | |
| 115 | .skip STACKSIZE | |
| 116 | */ | |
| 117 | ||
| 118 | .section .data | |
| 119 | ||
| 120 | .align 16 | |
| 121 | .global stacklocs | |
| 122 | stacklocs: | |
| 123 | .xword stack0+SP_OFFSET |