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h_mem_assist_asm.S revision 1.6.2.2
      1 /*	$NetBSD: h_mem_assist_asm.S,v 1.6.2.2 2019/06/10 22:10:07 christos Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2018 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Maxime Villard.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 	.globl	test1_begin, test1_end
     33 	.globl	test2_begin, test2_end
     34 	.globl	test3_begin, test3_end
     35 	.globl	test4_begin, test4_end
     36 	.globl	test5_begin, test5_end
     37 	.globl	test6_begin, test6_end
     38 	.globl	test7_begin, test7_end
     39 	.globl	test8_begin, test8_end
     40 	.globl	test9_begin, test9_end
     41 	.globl	test10_begin, test10_end
     42 	.globl	test11_begin, test11_end
     43 	.globl	test12_begin, test12_end
     44 	.globl	test13_begin, test13_end
     45 	.globl	test14_begin, test14_end
     46 	.text
     47 	.code64
     48 
     49 #define TEST_END	\
     50 	movq	$0xFFFFFFFFFFFFFFFF,%rcx;	\
     51 	rdmsr	;
     52 
     53 	.align	64
     54 test1_begin:
     55 	movq	$0x1000,%rax
     56 	movq	$0x1000,%rbp
     57 
     58 	movq	$0x1000,(%rax)
     59 
     60 	movq	$1,%r11
     61 	movq	$0x2000,(%rax,%r11,8)
     62 
     63 	movq	(%rbp),%r8
     64 	movq	8(%rbp),%rbx
     65 	addq	%rbx,%r8
     66 	movq	%r8,(%rbp)
     67 	movb	$4,(%rbp)
     68 
     69 	TEST_END
     70 test1_end:
     71 
     72 	.align	64
     73 test2_begin:
     74 	movq	$0x1000,%rax
     75 
     76 	movq	$0x1000,(%rax)
     77 	movq	$0x00FF,%rbx
     78 	orb	%bl,(%rax)
     79 	movq	$0x0400,%rcx
     80 	orw	%cx,(%rax)
     81 
     82 	movq	$0x0200,%rcx
     83 	orq	(%rax),%rcx
     84 	movq	%rcx,(%rax)
     85 
     86 	TEST_END
     87 test2_end:
     88 
     89 	.align	64
     90 test3_begin:
     91 	movq	$0x1000,%rax
     92 
     93 	movq	$0x1FFF,(%rax)
     94 	movq	$0x1FF0,%rbx
     95 	andq	%rbx,(%rax)
     96 	movq	$0x10C1,%rcx
     97 	andb	%cl,(%rax)
     98 
     99 	TEST_END
    100 test3_end:
    101 
    102 	.align	64
    103 test4_begin:
    104 	movq	$0x1000,%rax
    105 
    106 	movq	$0x1FFF,(%rax)
    107 	movq	$0x1FF0,%rbx
    108 	xorq	%rbx,(%rax)
    109 	movq	$0x10C0,%rcx
    110 	xorw	%cx,(%rax)
    111 
    112 	TEST_END
    113 test4_end:
    114 
    115 	.align	64
    116 test5_begin:
    117 	movq	$0xFFFFFFFF00001000,%rax
    118 
    119 	movq	$0x1FFF,(%eax)
    120 	movb	$0,(%eax,%ebx,1)
    121 
    122 	TEST_END
    123 test5_end:
    124 
    125 	.align	64
    126 test6_begin:
    127 	movq	$0xFFA0,%rax
    128 	movabs	%rax,0x1000
    129 
    130 	movabs	0x1000,%al
    131 	orb	$0x0B,%al
    132 	movabs	%al,0x1000
    133 
    134 	TEST_END
    135 test6_end:
    136 
    137 	.align	64
    138 test7_begin:
    139 	movq	$0x56,%rax
    140 
    141 	movq	$1,%rcx
    142 	movq	$0x1000,%rdi
    143 	rep	stosb
    144 
    145 	movq	$0x1234,%rax
    146 	stosw
    147 
    148 	TEST_END
    149 test7_end:
    150 
    151 	.align	64
    152 test8_begin:
    153 	movq	$0x1008,%rsi
    154 	movq	$0x12345678,(%rsi)
    155 
    156 	movq	$0x1000,%rdi
    157 
    158 	lodsw
    159 	movw	%ax,(%rdi)
    160 	addq	$2,%rdi
    161 
    162 	lodsb
    163 	movb	%al,(%rdi)
    164 	addq	$1,%rdi
    165 
    166 	lodsb
    167 	movb	%al,(%rdi)
    168 	addq	$2,%rdi
    169 
    170 	TEST_END
    171 test8_end:
    172 
    173 	.align	64
    174 test9_begin:
    175 	movq	$0x1000,%rax
    176 
    177 	movq	$0x12345678,8(%rax)
    178 
    179 	movq	$0x1008,%rsi
    180 	movq	$0x1000,%rdi
    181 
    182 	movq	$4,%rcx
    183 	rep movsb
    184 
    185 	movq	$2,%rcx
    186 	rep movsw
    187 
    188 	TEST_END
    189 test9_end:
    190 
    191 	.align	64
    192 test10_begin:
    193 	movq	$0x1000,%rax
    194 	movq	$0x12345678,(%rax)
    195 
    196 	movq	$0xFFFFFFFFFFFFFFFF,%rbx
    197 	movzbl	(%rax),%ebx
    198 	movq	%rbx,(%rax)
    199 
    200 	TEST_END
    201 test10_end:
    202 
    203 	.align	64
    204 test11_begin:
    205 	movq	$0x1000,%rax
    206 	movq	$0x12345678,(%rax)
    207 
    208 	movq	$0xFFFFFFFFFFFFFFFF,%rbx
    209 	movzwq	(%rax),%rbx
    210 	movq	%rbx,(%rax)
    211 
    212 	TEST_END
    213 test11_end:
    214 
    215 	.align	64
    216 test12_begin:
    217 	movq	$0x1000,%rax
    218 	movq	$0xFFFFFFFFF2345678,(%rax)
    219 
    220 	cmpb	$0x78,(%rax)
    221 	jne	.L12_failure
    222 	cmpb	$0x77,(%rax)
    223 	jl	.L12_failure
    224 	cmpb	$0x79,(%rax)
    225 	jg	.L12_failure
    226 
    227 	cmpw	$0x5678,(%rax)
    228 	jne	.L12_failure
    229 	cmpw	$0x5677,(%rax)
    230 	jl	.L12_failure
    231 	cmpw	$0x5679,(%rax)
    232 	jg	.L12_failure
    233 
    234 	cmpl	$0xF2345678,(%rax)
    235 	jne	.L12_failure
    236 	cmpl	$0xF2345677,(%rax)
    237 	jl	.L12_failure
    238 	cmpl	$0xF2345679,(%rax)
    239 	jg	.L12_failure
    240 
    241 	cmpq	$0xFFFFFFFFF2345678,(%rax)
    242 	jne	.L12_failure
    243 	cmpq	$0xFFFFFFFFF2345677,(%rax)
    244 	jl	.L12_failure
    245 	cmpq	$0xFFFFFFFFF2345679,(%rax)
    246 	jg	.L12_failure
    247 
    248 .L12_success:
    249 	movq	$1,(%rax)
    250 	TEST_END
    251 .L12_failure:
    252 	movq	$0,(%rax)
    253 	TEST_END
    254 test12_end:
    255 
    256 	.align	64
    257 test13_begin:
    258 	movq	$0x1000,%rax
    259 	movq	$0x000000001000A0FF,(%rax)
    260 
    261 	movq	$0xFFFF,%rcx
    262 	subb	%cl,(%rax)
    263 
    264 	movq	$0xA000,%rcx
    265 	subw	%cx,(%rax)
    266 
    267 	movq	$0x0000000F1000A0FF,%rcx
    268 	subq	(%rax),%rcx
    269 
    270 	movq	%rcx,(%rax)
    271 
    272 	TEST_END
    273 test13_end:
    274 
    275 	.align	64
    276 test14_begin:
    277 	movq	$0x1000,%rax
    278 	movq	$0xA0FF,(%rax)
    279 
    280 	testb	$0x0F,(%rax)
    281 	jz	.L14_failure
    282 
    283 	testw	$0x0F00,(%rax)
    284 	jnz	.L14_failure
    285 
    286 	testl	$0xA000,(%rax)
    287 	jz	.L14_failure
    288 
    289 .L14_success:
    290 	movq	$1,(%rax)
    291 	TEST_END
    292 .L14_failure:
    293 	movq	$0,(%rax)
    294 	TEST_END
    295 test14_end:
    296