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head/sys/boot/mips/uboot/start.S
| Property | Old Value | New Value |
|---|---|---|
| svn:eol-style | null | native \ No newline at end of property |
| svn:keywords | null | FreeBSD=%H \ No newline at end of property |
| svn:mime-type | null | text/plain \ No newline at end of property |
| /*- | |||||
| * Copyright (c) 2016 Stanislav Galabov | |||||
| * All rights reserved. | |||||
| * | |||||
| * Redistribution and use in source and binary forms, with or without | |||||
| * modification, are permitted provided that the following conditions | |||||
| * are met: | |||||
| * 1. Redistributions of source code must retain the above copyright | |||||
| * notice, this list of conditions and the following disclaimer. | |||||
| * 2. 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. | |||||
| * | |||||
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR OR CONTRIBUTORS BE LIABLE | |||||
| * FOR ANY DIRECT, 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. | |||||
| * | |||||
| * $FreeBSD$ | |||||
| */ | |||||
| #include <machine/asm.h> | |||||
| .text | |||||
| .extern _C_LABEL(main) | |||||
| .weak _DYNAMIC | |||||
| /* | |||||
| * Entry point to the loader that U-Boot passes control to. | |||||
| */ | |||||
| ENTRY(_start) | |||||
| PTR_S sp, uboot_address | |||||
| j main | |||||
| nop | |||||
| END(_start) | |||||
| /* | |||||
| * syscall() | |||||
| */ | |||||
| ENTRY(syscall) | |||||
| PTR_S ra, ret_address | |||||
| PTR_L t9, syscall_ptr | |||||
| jalr t9 | |||||
| nop | |||||
| PTR_L ra, ret_address | |||||
| jr ra | |||||
| nop | |||||
| END(syscall) | |||||
| /* | |||||
| * Data section | |||||
| */ | |||||
| .data | |||||
| .align 8 | |||||
| .globl syscall_ptr | |||||
| syscall_ptr: | |||||
| .dword 0 | |||||
| .globl uboot_address | |||||
| uboot_address: | |||||
| .dword 0 | |||||
| ret_address: | |||||
| .dword 0 | |||||