|
Last change
on this file since 675 was
444,
checked in by satin@…, 7 years ago
|
|
add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
|
|
File size:
1.0 KB
|
| Line | |
|---|
| 1 | /* outbyte.S -- Write one byte for OpenRISC 1000. |
|---|
| 2 | * |
|---|
| 3 | * Copyright (c) 2014 Authors |
|---|
| 4 | * |
|---|
| 5 | * Contributor Stefan Wallentowitz <stefan.wallentowitz@tum.de> |
|---|
| 6 | * |
|---|
| 7 | * The authors hereby grant permission to use, copy, modify, distribute, |
|---|
| 8 | * and license this software and its documentation for any purpose, provided |
|---|
| 9 | * that existing copyright notices are retained in all copies and that this |
|---|
| 10 | * notice is included verbatim in any distributions. No written agreement, |
|---|
| 11 | * license, or royalty fee is required for any of the authorized uses. |
|---|
| 12 | * Modifications to this software may be copyrighted by their authors |
|---|
| 13 | * and need not follow the licensing terms described here, provided that |
|---|
| 14 | * the new terms are clearly indicated on the first page of each file where |
|---|
| 15 | * they apply. |
|---|
| 16 | */ |
|---|
| 17 | |
|---|
| 18 | #include "include/or1k-asm.h" |
|---|
| 19 | |
|---|
| 20 | .global _or1k_outbyte |
|---|
| 21 | |
|---|
| 22 | .text |
|---|
| 23 | _or1k_outbyte: |
|---|
| 24 | LOAD_SYMBOL_2_GPR(r4,_or1k_board_uart_base) |
|---|
| 25 | l.lwz r4, 0(r4) |
|---|
| 26 | l.sfeq r4, r0 |
|---|
| 27 | OR1K_DELAYED_NOP(l.bf .Lnouart) |
|---|
| 28 | .Luart: |
|---|
| 29 | OR1K_DELAYED_NOP(l.j _or1k_uart_write) |
|---|
| 30 | .Lnouart: |
|---|
| 31 | OR1K_DELAYED( |
|---|
| 32 | OR1K_INST(l.nop 0x4), |
|---|
| 33 | OR1K_INST(l.jr r9) |
|---|
| 34 | ) |
|---|
Note: See
TracBrowser
for help on using the repository browser.
