| 0,0 → 1,161 |
|---|
| # |
| # Copyright (C) 2003-2004 Jakub Jermar |
| # All rights reserved. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions |
| # are met: |
| # |
| # - Redistributions of source code must retain the above copyright |
| # notice, this list of conditions and the following disclaimer. |
| # - 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. |
| # - The name of the author may not be used to endorse or promote products |
| # derived from this software without specific prior written permission. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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. |
| # |
| |
| .text |
| |
| .set noat |
| .set noreorder |
| |
| |
| #include <arch/asm/regname.h> |
| #include <libarch/context_offset.h> |
| |
| .global context_save |
| .global context_restore |
| |
| .macro CONTEXT_STORE r |
| sw $s0,OFFSET_S0(\r) |
| sw $s1,OFFSET_S1(\r) |
| sw $s2,OFFSET_S2(\r) |
| sw $s3,OFFSET_S3(\r) |
| sw $s4,OFFSET_S4(\r) |
| sw $s5,OFFSET_S5(\r) |
| sw $s6,OFFSET_S6(\r) |
| sw $s7,OFFSET_S7(\r) |
| sw $s8,OFFSET_S8(\r) |
| sw $gp,OFFSET_GP(\r) |
| sw $k1,OFFSET_TLS(\r) |
| |
| #ifdef CONFIG_MIPS_FPU |
| mfc1 $t0,$20 |
| sw $t0, OFFSET_F20(\r) |
| |
| mfc1 $t0,$21 |
| sw $t0, OFFSET_F21(\r) |
| |
| mfc1 $t0,$22 |
| sw $t0, OFFSET_F22(\r) |
| |
| mfc1 $t0,$23 |
| sw $t0, OFFSET_F23(\r) |
| |
| mfc1 $t0,$24 |
| sw $t0, OFFSET_F24(\r) |
| |
| mfc1 $t0,$25 |
| sw $t0, OFFSET_F25(\r) |
| |
| mfc1 $t0,$26 |
| sw $t0, OFFSET_F26(\r) |
| |
| mfc1 $t0,$27 |
| sw $t0, OFFSET_F27(\r) |
| |
| mfc1 $t0,$28 |
| sw $t0, OFFSET_F28(\r) |
| |
| mfc1 $t0,$29 |
| sw $t0, OFFSET_F29(\r) |
| |
| mfc1 $t0,$30 |
| sw $t0, OFFSET_F30(\r) |
| #endif |
| |
| sw $ra,OFFSET_PC(\r) |
| sw $sp,OFFSET_SP(\r) |
| .endm |
| |
| .macro CONTEXT_LOAD r |
| lw $s0,OFFSET_S0(\r) |
| lw $s1,OFFSET_S1(\r) |
| lw $s2,OFFSET_S2(\r) |
| lw $s3,OFFSET_S3(\r) |
| lw $s4,OFFSET_S4(\r) |
| lw $s5,OFFSET_S5(\r) |
| lw $s6,OFFSET_S6(\r) |
| lw $s7,OFFSET_S7(\r) |
| lw $s8,OFFSET_S8(\r) |
| lw $gp,OFFSET_GP(\r) |
| lw $k1,OFFSET_TLS(\r) |
| |
| #ifdef CONFIG_MIPS_FPU |
| lw $t0, OFFSET_F20(\r) |
| mtc1 $t0,$20 |
| |
| lw $t0, OFFSET_F21(\r) |
| mtc1 $t0,$21 |
| |
| lw $t0, OFFSET_F22(\r) |
| mtc1 $t0,$22 |
| |
| lw $t0, OFFSET_F23(\r) |
| mtc1 $t0,$23 |
| |
| lw $t0, OFFSET_F24(\r) |
| mtc1 $t0,$24 |
| |
| lw $t0, OFFSET_F25(\r) |
| mtc1 $t0,$25 |
| |
| lw $t0, OFFSET_F26(\r) |
| mtc1 $t0,$26 |
| |
| lw $t0, OFFSET_F27(\r) |
| mtc1 $t0,$27 |
| |
| lw $t0, OFFSET_F28(\r) |
| mtc1 $t0,$28 |
| |
| lw $t0, OFFSET_F29(\r) |
| mtc1 $t0,$29 |
| |
| lw $t0, OFFSET_F30(\r) |
| mtc1 $t0,$30 |
| #endif |
| |
| lw $ra,OFFSET_PC(\r) |
| lw $sp,OFFSET_SP(\r) |
| .endm |
| |
| context_save: |
| CONTEXT_STORE $a0 |
| |
| # context_save returns 1 |
| j $ra |
| li $v0, 1 |
| |
| context_restore: |
| CONTEXT_LOAD $a0 |
| |
| # Just for the jump into first function, but one instruction |
| # should not bother us |
| move $t9, $ra |
| # context_restore returns 0 |
| j $ra |
| xor $v0, $v0 |
| |