/* * Copyright (c) 2003 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. */ #include #include #include .text .macro cp0_read reg mfc0 $2, \reg j $31 nop .endm .macro cp0_write reg mtc0 $4, \reg j $31 nop .endm .set noat .set noreorder .set nomacro FUNCTION_BEGIN(asm_delay_loop) j $31 nop FUNCTION_END(asm_delay_loop) FUNCTION_BEGIN(cpu_halt) j cpu_halt nop FUNCTION_END(cpu_halt) FUNCTION_BEGIN(memcpy_from_uspace) FUNCTION_BEGIN(memcpy_to_uspace) move $t2, $a0 /* save dst */ addiu $v0, $a1, 3 li $v1, -4 /* 0xfffffffffffffffc */ and $v0, $v0, $v1 beq $a1, $v0, 3f move $t0, $a0 0: beq $a2, $zero, 2f move $a3, $zero 1: addu $v0, $a1, $a3 lbu $a0, 0($v0) addu $v1, $t0, $a3 addiu $a3, $a3, 1 bne $a3, $a2, 1b sb $a0, 0($v1) 2: jr $ra move $v0, $t2 3: addiu $v0, $a0, 3 and $v0, $v0, $v1 bne $a0, $v0, 0b srl $t1, $a2, 2 beq $t1, $zero, 5f move $a3, $zero move $a3, $zero move $a0, $zero 4: addu $v0, $a1, $a0 lw $v1, 0($v0) addiu $a3, $a3, 1 addu $v0, $t0, $a0 sw $v1, 0($v0) bne $a3, $t1, 4b addiu $a0, $a0, 4 5: andi $a2, $a2, 0x3 beq $a2, $zero, 2b nop sll $v0, $a3, 2 addu $t1, $v0, $t0 move $a3, $zero addu $t0, $v0, $a1 6: addu $v0, $t0, $a3 lbu $a0, 0($v0) addu $v1, $t1, $a3 addiu $a3, $a3, 1 bne $a3, $a2, 6b sb $a0, 0($v1) jr $ra move $v0, $t2 FUNCTION_END(memcpy_from_uspace) FUNCTION_END(memcpy_to_uspace) SYMBOL(memcpy_from_uspace_failover_address) SYMBOL(memcpy_to_uspace_failover_address) jr $ra move $v0, $zero .macro fpu_gp_save reg ctx mfc1 $t0, $\reg sw $t0, FPU_CONTEXT_OFFSET_DREGS + \reg * FPU_CONTEXT_DREGS_ITEM_SIZE(\ctx) .endm .macro fpu_gp_restore reg ctx lw $t0, FPU_CONTEXT_OFFSET_DREGS + \reg * FPU_CONTEXT_DREGS_ITEM_SIZE(\ctx) mtc1 $t0, $\reg .endm .macro fpu_ct_save reg ctx cfc1 $t0, $1 sw $t0, FPU_CONTEXT_OFFSET_CREGS + \reg * FPU_CONTEXT_CREGS_ITEM_SIZE(\ctx) .endm .macro fpu_ct_restore reg ctx lw $t0, FPU_CONTEXT_OFFSET_CREGS + \reg * FPU_CONTEZT_CREGS_ITEM_SIZE(\ctx) ctc1 $t0, $\reg .endm FUNCTION_BEGIN(fpu_context_save) #ifdef CONFIG_FPU fpu_gp_save 0, $a0 fpu_gp_save 1, $a0 fpu_gp_save 2, $a0 fpu_gp_save 3, $a0 fpu_gp_save 4, $a0 fpu_gp_save 5, $a0 fpu_gp_save 6, $a0 fpu_gp_save 7, $a0 fpu_gp_save 8, $a0 fpu_gp_save 9, $a0 fpu_gp_save 10, $a0 fpu_gp_save 11, $a0 fpu_gp_save 12, $a0 fpu_gp_save 13, $a0 fpu_gp_save 14, $a0 fpu_gp_save 15, $a0 fpu_gp_save 16, $a0 fpu_gp_save 17, $a0 fpu_gp_save 18, $a0 fpu_gp_save 19, $a0 fpu_gp_save 20, $a0 fpu_gp_save 21, $a0 fpu_gp_save 22, $a0 fpu_gp_save 23, $a0 fpu_gp_save 24, $a0 fpu_gp_save 25, $a0 fpu_gp_save 26, $a0 fpu_gp_save 27, $a0 fpu_gp_save 28, $a0 fpu_gp_save 29, $a0 fpu_gp_save 30, $a0 fpu_gp_save 31, $a0 fpu_ct_save 1, $a0 fpu_ct_save 2, $a0 fpu_ct_save 3, $a0 fpu_ct_save 4, $a0 fpu_ct_save 5, $a0 fpu_ct_save 6, $a0 fpu_ct_save 7, $a0 fpu_ct_save 8, $a0 fpu_ct_save 9, $a0 fpu_ct_save 10, $a0 fpu_ct_save 11, $a0 fpu_ct_save 12, $a0 fpu_ct_save 13, $a0 fpu_ct_save 14, $a0 fpu_ct_save 15, $a0 fpu_ct_save 16, $a0 fpu_ct_save 17, $a0 fpu_ct_save 18, $a0 fpu_ct_save 19, $a0 fpu_ct_save 20, $a0 fpu_ct_save 21, $a0 fpu_ct_save 22, $a0 fpu_ct_save 23, $a0 fpu_ct_save 24, $a0 fpu_ct_save 25, $a0 fpu_ct_save 26, $a0 fpu_ct_save 27, $a0 fpu_ct_save 28, $a0 fpu_ct_save 29, $a0 fpu_ct_save 30, $a0 fpu_ct_save 31, $a0 #endif j $ra nop FUNCTION_END(fpu_context_save) FUNCTION_BEGIN(fpu_context_restore) #ifdef CONFIG_FPU fpu_gp_restore 0, $a0 fpu_gp_restore 1, $a0 fpu_gp_restore 2, $a0 fpu_gp_restore 3, $a0 fpu_gp_restore 4, $a0 fpu_gp_restore 5, $a0 fpu_gp_restore 6, $a0 fpu_gp_restore 7, $a0 fpu_gp_restore 8, $a0 fpu_gp_restore 9, $a0 fpu_gp_restore 10, $a0 fpu_gp_restore 11, $a0 fpu_gp_restore 12, $a0 fpu_gp_restore 13, $a0 fpu_gp_restore 14, $a0 fpu_gp_restore 15, $a0 fpu_gp_restore 16, $a0 fpu_gp_restore 17, $a0 fpu_gp_restore 18, $a0 fpu_gp_restore 19, $a0 fpu_gp_restore 20, $a0 fpu_gp_restore 21, $a0 fpu_gp_restore 22, $a0 fpu_gp_restore 23, $a0 fpu_gp_restore 24, $a0 fpu_gp_restore 25, $a0 fpu_gp_restore 26, $a0 fpu_gp_restore 27, $a0 fpu_gp_restore 28, $a0 fpu_gp_restore 29, $a0 fpu_gp_restore 30, $a0 fpu_gp_restore 31, $a0 fpu_ct_restore 1, $a0 fpu_ct_restore 2, $a0 fpu_ct_restore 3, $a0 fpu_ct_restore 4, $a0 fpu_ct_restore 5, $a0 fpu_ct_restore 6, $a0 fpu_ct_restore 7, $a0 fpu_ct_restore 8, $a0 fpu_ct_restore 9, $a0 fpu_ct_restore 10, $a0 fpu_ct_restore 11, $a0 fpu_ct_restore 12, $a0 fpu_ct_restore 13, $a0 fpu_ct_restore 14, $a0 fpu_ct_restore 15, $a0 fpu_ct_restore 16, $a0 fpu_ct_restore 17, $a0 fpu_ct_restore 18, $a0 fpu_ct_restore 19, $a0 fpu_ct_restore 20, $a0 fpu_ct_restore 21, $a0 fpu_ct_restore 22, $a0 fpu_ct_restore 23, $a0 fpu_ct_restore 24, $a0 fpu_ct_restore 25, $a0 fpu_ct_restore 26, $a0 fpu_ct_restore 27, $a0 fpu_ct_restore 28, $a0 fpu_ct_restore 29, $a0 fpu_ct_restore 30, $a0 fpu_ct_restore 31, $a0 #endif j $ra nop FUNCTION_END(fpu_context_restore) FUNCTION_BEGIN(early_putuchar) j $ra nop FUNCTION_END(early_putuchar)