📄 flashasm.s
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/* * flashasm.S: flash magic for LART * * Copyright (C) 1999 2000 2001 Jan-Derk bakker (J.D.Bakker@its.tudelft.nl) * * This program 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 of the License, or * (at your option) any later version. * * This program 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; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */.text.globl data_to_flash.globl data_from_flash /* Subroutine that takes data in r0 and formats it so it will be in */ /* the correct order for the internal flash */ /* used for LART only */data_to_flash: mov r1, #0x0 tst r0, #0x00000001 orrne r1, r1, #0x00001000 tst r0, #0x00000002 orrne r1, r1, #0x00004000 tst r0, #0x00000004 orrne r1, r1, #0x00000800 tst r0, #0x00000008 orrne r1, r1, #0x00000200 tst r0, #0x00000010 orrne r1, r1, #0x00000001 tst r0, #0x00000020 orrne r1, r1, #0x00000004 tst r0, #0x00000040 orrne r1, r1, #0x00000080 tst r0, #0x00000080 orrne r1, r1, #0x00000020 tst r0, #0x00000100 orrne r1, r1, #0x00002000 tst r0, #0x00000200 orrne r1, r1, #0x00008000 tst r0, #0x00000400 orrne r1, r1, #0x00000400 tst r0, #0x00000800 orrne r1, r1, #0x00000100 tst r0, #0x00001000 orrne r1, r1, #0x00000002 tst r0, #0x00002000 orrne r1, r1, #0x00000008 tst r0, #0x00004000 orrne r1, r1, #0x00000040 tst r0, #0x00008000 orrne r1, r1, #0x00000010 tst r0, #0x00010000 orrne r1, r1, #0x00100000 tst r0, #0x00020000 orrne r1, r1, #0x00400000 tst r0, #0x00040000 orrne r1, r1, #0x00080000 tst r0, #0x00080000 orrne r1, r1, #0x00020000 tst r0, #0x00100000 orrne r1, r1, #0x01000000 tst r0, #0x00200000 orrne r1, r1, #0x04000000 tst r0, #0x00400000 orrne r1, r1, #0x80000000 tst r0, #0x00800000 orrne r1, r1, #0x20000000 tst r0, #0x01000000 orrne r1, r1, #0x00200000 tst r0, #0x02000000 orrne r1, r1, #0x00800000 tst r0, #0x04000000 orrne r1, r1, #0x00040000 tst r0, #0x08000000 orrne r1, r1, #0x00010000 tst r0, #0x10000000 orrne r1, r1, #0x02000000 tst r0, #0x20000000 orrne r1, r1, #0x08000000 tst r0, #0x40000000 orrne r1, r1, #0x40000000 tst r0, #0x80000000 orrne r1, r1, #0x10000000 mov r0, r1 mov pc, lr /* Takes data received from the flash, and unshuffles it. */data_from_flash: mov r1, #0x00 tst r0, #0x00000001 orrne r1, r1, #0x00000010 tst r0, #0x00000002 orrne r1, r1, #0x00001000 tst r0, #0x00000004 orrne r1, r1, #0x00000020 tst r0, #0x00000008 orrne r1, r1, #0x00002000 tst r0, #0x00000010 orrne r1, r1, #0x00008000 tst r0, #0x00000020 orrne r1, r1, #0x00000080 tst r0, #0x00000040 orrne r1, r1, #0x00004000 tst r0, #0x00000080 orrne r1, r1, #0x00000040 tst r0, #0x00000100 orrne r1, r1, #0x00000800 tst r0, #0x00000200 orrne r1, r1, #0x00000008 tst r0, #0x00000400 orrne r1, r1, #0x00000400 tst r0, #0x00000800 orrne r1, r1, #0x00000004 tst r0, #0x00001000 orrne r1, r1, #0x00000001 tst r0, #0x00002000 orrne r1, r1, #0x00000100 tst r0, #0x00004000 orrne r1, r1, #0x00000002 tst r0, #0x00008000 orrne r1, r1, #0x00000200 tst r0, #0x00010000 orrne r1, r1, #0x08000000 tst r0, #0x00020000 orrne r1, r1, #0x00080000 tst r0, #0x00040000 orrne r1, r1, #0x04000000 tst r0, #0x00080000 orrne r1, r1, #0x00040000 tst r0, #0x00100000 orrne r1, r1, #0x00010000 tst r0, #0x00200000 orrne r1, r1, #0x01000000 tst r0, #0x00400000 orrne r1, r1, #0x00020000 tst r0, #0x00800000 orrne r1, r1, #0x02000000 tst r0, #0x01000000 orrne r1, r1, #0x00100000 tst r0, #0x02000000 orrne r1, r1, #0x10000000 tst r0, #0x04000000 orrne r1, r1, #0x00200000 tst r0, #0x08000000 orrne r1, r1, #0x20000000 tst r0, #0x10000000 orrne r1, r1, #0x80000000 tst r0, #0x20000000 orrne r1, r1, #0x00800000 tst r0, #0x40000000 orrne r1, r1, #0x40000000 tst r0, #0x80000000 orrne r1, r1, #0x00400000 mov r0, r1 mov pc, lr⌨️ 快捷键说明
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