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89ece8e139
This is a fix for disassembling unusual instruction sequences in 64-bit
mode w.r.t the CALL rel16 instruction. It might be desirable to move the
check somewhere else, but it essentially mimics the special case
handling with JCXZ in 16-bit mode.
The current behavior accepts the opcode size prefix and causes the
call's immediate to stop disassembling after 2 bytes. When debugging
sequences of instructions with this pattern, the disassembler output
becomes extremely unreliable and essentially useless (if you jump midway
into what lldb thinks is a unified instruction, you'll lose %rip). So we
ignore the prefix and consume all 4 bytes when disassembling a 64-bit
mode binary.
Note: in Vol. 2A 3-99 the Intel spec states that CALL rel16 is N.S. N.S.
is defined as:
Indicates an instruction syntax that requires an address override
prefix in 64-bit mode and is not supported. Using an address
override prefix in 64-bit mode may result in model-specific
execution behavior. (Vol. 2A 3-7)
Since 0x66 is an operand override prefix we should be OK (although we
may want to warn about 0x67 prefixes to 0xe8). On the CPUs I tested
with, they all ignore the 0x66 prefix in 64-bit mode.
Patch by Matthew Barney!
Differential Revision: http://reviews.llvm.org/D9573
llvm-svn: 246038
459 lines
9.1 KiB
Plaintext
459 lines
9.1 KiB
Plaintext
# RUN: llvm-mc --disassemble %s -triple=x86_64 | FileCheck %s
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# Coverage
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# CHECK: vcmptrue_usps
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0xc5 0x04 0xc2 0xc7 0x1f
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# CHECK: vcmptrue_uspd
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0xc5 0x05 0xc2 0xc7 0x1f
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# CHECK: vcmptrue_usss
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0xc5 0x06 0xc2 0xc7 0x1f
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# CHECK: vcmptrue_ussd
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0xc5 0x07 0xc2 0xc7 0x1f
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# CHECK: vcmpeq_uqps
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0xc5 0x04 0xc2 0xc7 0x08
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# CHECK: vcmpeq_uqpd
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0xc5 0x05 0xc2 0xc7 0x08
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# CHECK: vcmpeq_uqss
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0xc5 0x06 0xc2 0xc7 0x08
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# CHECK: vcmpeq_uqsd
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0xc5 0x07 0xc2 0xc7 0x08
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# CHECK: vcmpeqps
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0xc5 0x04 0xc2 0xc7 0x00
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# CHECK: vcmpeqpd
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0xc5 0x05 0xc2 0xc7 0x00
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# CHECK: vcmpeqss
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0xc5 0x06 0xc2 0xc7 0x00
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# CHECK: vcmpeqsd
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0xc5 0x07 0xc2 0xc7 0x00
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# CHECK: cmpeqps
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0x0f 0xc2 0xc7 0x00
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# CHECK: cmpeqpd
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0x66 0x0f 0xc2 0xc7 0x00
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# CHECK: cmpeqss
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0xf3 0x0f 0xc2 0xc7 0x00
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# CHECK: cmpeqsd
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0xf2 0x0f 0xc2 0xc7 0x00
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# CHECK: cmpordps
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0x0f 0xc2 0xc7 0x07
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# CHECK: cmpordpd
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0x66 0x0f 0xc2 0xc7 0x07
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# CHECK: cmpordss
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0xf3 0x0f 0xc2 0xc7 0x07
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# CHECK: cmpordsd
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0xf2 0x0f 0xc2 0xc7 0x07
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# CHECK: extrq $2, $3, %xmm0
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0x66 0x0f 0x78 0xc0 0x03 0x02
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# CHECK: extrq %xmm1, %xmm0
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0x66 0x0f 0x79 0xc1
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# CHECK: insertq $6, $5, %xmm1, %xmm0
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0xf2 0x0f 0x78 0xc1 0x05 0x06
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# CHECK: insertq %xmm1, %xmm0
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0xf2 0x0f 0x79 0xc1
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# CHECK: movntsd %xmm0, (%rdi)
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0xf2 0x0f 0x2b 0x07
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# CHECK: movntss %xmm0, (%rdi)
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0xf3 0x0f 0x2b 0x07
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# CHECK: adcxl %eax, %eax
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0x66 0x0f 0x38 0xf6 0xc0
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# CHECK: adcxl (%rax), %eax
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0x66 0x0f 0x38 0xf6 0x00
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# CHECK: adcxq %rax, %rax
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0x66 0x48 0x0f 0x38 0xf6 0xc0
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# CHECK: adcxq (%rax), %rax
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0x66 0x48 0x0f 0x38 0xf6 0x00
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# CHECK: adoxl %eax, %eax
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0xf3 0x0f 0x38 0xf6 0xc0
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# CHECK: adoxl (%rax), %eax
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0xf3 0x0f 0x38 0xf6 0x00
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# CHECK: adoxq %rax, %rax
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0xf3 0x48 0x0f 0x38 0xf6 0xc0
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# CHECK: adoxq (%rax), %rax
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0xf3 0x48 0x0f 0x38 0xf6 0x00
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# CHECK: xbegin 53
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0xc7 0xf8 0x35 0x00 0x00 0x00
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# CHECK: xbegin 53
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0x66 0xc7 0xf8 0x35 0x00
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# CHECK: xend
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0x0f 0x01 0xd5
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# CHECK: xabort $13
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0xc6 0xf8 0x0d
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# CHECK: xsave64 (%rax)
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0x48 0x0f 0xae 0x20
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# CHECK: xrstor64 (%rax)
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0x48 0x0f 0xae 0x28
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# CHECK: xsaveopt64 (%rax)
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0x48 0x0f 0xae 0x30
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# CHECK: clac
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0x0f 0x01 0xca
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# CHECK: stac
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0x0f 0x01 0xcb
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# CHECK: movabsb -6066930261531658096, %al
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0xa0 0x90 0x78 0x56 0x34 0x12 0xef 0xcd 0xab
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# CHECK: movabsb -6066930261531658096, %al
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0x48 0xa0 0x90 0x78 0x56 0x34 0x12 0xef 0xcd 0xab
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# CHECK: movabsw -6066930261531658096, %ax
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0x66 0xa1 0x90 0x78 0x56 0x34 0x12 0xef 0xcd 0xab
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# CHECK: movabsl -6066930261531658096, %eax
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0xa1 0x90 0x78 0x56 0x34 0x12 0xef 0xcd 0xab
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# CHECK: movabsq -6066930261531658096, %rax
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0x48 0xa1 0x90 0x78 0x56 0x34 0x12 0xef 0xcd 0xab
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# CHECK: movabsb %al, -6066930261531658096
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0xa2 0x90 0x78 0x56 0x34 0x12 0xef 0xcd 0xab
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# CHECK: movabsb %al, -6066930261531658096
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0x48 0xa2 0x90 0x78 0x56 0x34 0x12 0xef 0xcd 0xab
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# CHECK: movabsw %ax, -6066930261531658096
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0x66 0xa3 0x90 0x78 0x56 0x34 0x12 0xef 0xcd 0xab
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# CHECK: movabsl %eax, -6066930261531658096
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0xa3 0x90 0x78 0x56 0x34 0x12 0xef 0xcd 0xab
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# CHECK: movabsq %rax, -6066930261531658096
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0x48 0xa3 0x90 0x78 0x56 0x34 0x12 0xef 0xcd 0xab
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# CHECK: sha1rnds4 $1, %xmm1, %xmm2
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0x0f 0x3a 0xcc 0xd1 0x01
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# CHECK: sha1rnds4 $1, (%rax), %xmm2
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0x0f 0x3a 0xcc 0x10 0x01
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# CHECK: sha1nexte %xmm1, %xmm2
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0x0f 0x38 0xc8 0xd1
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# CHECK: sha1nexte (%rax), %xmm2
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0x0f 0x38 0xc8 0x10
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# CHECK: sha1msg1 %xmm1, %xmm2
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0x0f 0x38 0xc9 0xd1
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# CHECK: sha1msg1 (%rax), %xmm2
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0x0f 0x38 0xc9 0x10
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# CHECK: sha1msg2 %xmm1, %xmm2
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0x0f 0x38 0xca 0xd1
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# CHECK: sha1msg2 (%rax), %xmm2
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0x0f 0x38 0xca 0x10
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# CHECK: sha256rnds2 (%rax), %xmm2
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0x0f 0x38 0xcb 0x10
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# CHECK: sha256rnds2 %xmm1, %xmm2
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0x0f 0x38 0xcb 0xd1
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# CHECK: sha256msg1 %xmm1, %xmm2
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0x0f 0x38 0xcc 0xd1
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# CHECK: sha256msg1 (%rax), %xmm2
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0x0f 0x38 0xcc 0x10
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# CHECK: sha256msg2 %xmm1, %xmm2
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0x0f 0x38 0xcd 0xd1
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# CHECK: sha256msg2 (%rax), %xmm2
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0x0f 0x38 0xcd 0x10
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# CHECK: incl %ecx
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0xff 0xc1
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# CHECK: decl %ecx
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0xff 0xc9
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# CHECK: incw %cx
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0x66 0xff 0xc1
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# CHECK: decw %cx
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0x66 0xff 0xc9
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# CHECK: incb %cl
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0xfe 0xc1
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# CHECK: decb %cl
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0xfe 0xc9
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# CHECK: incq %rcx
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0x48 0xff 0xc1
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# CHECK: decq %rcx
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0x48 0xff 0xc9
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# CHECK: movq %xmm0, %xmm0
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0xf3 0x0f 0x7e 0xc0
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# CHECK: vmovq %xmm0, %xmm0
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0xc5 0xfa 0x7e 0xc0
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# CHECK: vmovq %xmm0, %rax
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0xc4 0xe1 0xf9 0x7e 0xc0
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# CHECK: movd (%rax), %mm0
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0x48 0x0f 0x6e 0x00
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# CHECK: movd %rax, %mm0
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0x48 0x0f 0x6e 0xc0
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# CHECK: movd %mm0, (%rax)
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0x48 0x0f 0x7e 0x00
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# CHECK: movd %mm0, %rax
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0x48 0x0f 0x7e 0xc0
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# CHECK: movd (%rax), %xmm0
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0x66 0x48 0x0f 0x6e 0x00
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# CHECK: movd %rax, %xmm0
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0x66 0x48 0x0f 0x6e 0xc0
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# CHECK: movd %xmm0, (%rax)
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0x66 0x48 0x0f 0x7e 0x00
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# CHECK: movd %xmm0, %rax
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0x66 0x48 0x0f 0x7e 0xc0
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# CHECK: pextrw $3, %xmm3, %ecx
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0x66 0x0f 0x3a 0x15 0xd9 0x03
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# CHECK: pextrw $3, %xmm3, (%rax)
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0x66 0x0f 0x3a 0x15 0x18 0x03
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# CHECK: $0, 305419896(,%r8)
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0x43 0x80 0x04 0x05 0x78 0x56 0x34 0x12 0x00
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# CHECK: $0, 305419896(%r13,%r8)
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0x43 0x80 0x84 0x05 0x78 0x56 0x34 0x12 0x00
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# CHECK: $0, 305419896(,%r8)
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0x42 0x80 0x04 0x05 0x78 0x56 0x34 0x12 0x00
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# CHECK: $0, 305419896(%rbp,%r8)
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0x42 0x80 0x84 0x05 0x78 0x56 0x34 0x12 0x00
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# CHECK: $0, 305419896(,%r12)
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0x42 0x80 0x04 0x25 0x78 0x56 0x34 0x12 0x00
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# CHECK: $0, 305419896(%rbp,%r12)
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0x42 0x80 0x84 0x25 0x78 0x56 0x34 0x12 0x00
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# CHECK: $0, 305419896
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0x80 0x04 0x25 0x78 0x56 0x34 0x12 0x00
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# CHECK: $0, 305419896(%rbp)
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0x80 0x84 0x25 0x78 0x56 0x34 0x12 0x00
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# CHECK: movabsq 6510615555426900570, %rax
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0x48 0xa1 0x5a 0x5a 0x5a 0x5a 0x5a 0x5a 0x5a 0x5a
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# CHECK: movq 1515870810, %rax
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0x67, 0x48 0xa1 0x5a 0x5a 0x5a 0x5a
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# CHECK: movabsq %rax, 6510615555426900570
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0x48 0xa3 0x5a 0x5a 0x5a 0x5a 0x5a 0x5a 0x5a 0x5a
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# CHECK: movq %rax, 1515870810
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0x67, 0x48 0xa3 0x5a 0x5a 0x5a 0x5a
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# CHECK: callq -32769
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0x66 0xe8 0xff 0x7f 0xff 0xff
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# CHECK: callq -32769
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0x66 0x66 0x48 0xe8 0xff 0x7f 0xff 0xff
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# CHECK: jmp -32769
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0xe9 0xff 0x7f 0xff 0xff
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# CHECK: jmp -32769
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0x66 0xe9 0xff 0x7f 0xff 0xff
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# CHECK: jmp -32769
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0x66 0x66 0x48 0xe9 0xff 0x7f 0xff 0xff
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# CHECK: jb -32769
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0x0f 0x82 0xff 0x7f 0xff 0xff
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# CHECK: jb -32769
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0x66 0x0f 0x82 0xff 0x7f 0xff 0xff
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# CHECK: jae -32769
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0x0f 0x83 0xff 0x7f 0xff 0xff
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# CHECK: jae -32769
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0x66 0x0f 0x83 0xff 0x7f 0xff 0xff
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# CHECK: je -32769
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0x0f 0x84 0xff 0x7f 0xff 0xff
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# CHECK: je -32769
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0x66 0x0f 0x84 0xff 0x7f 0xff 0xff
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# CHECK: jne -32769
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0x0f 0x85 0xff 0x7f 0xff 0xff
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# CHECK: jne -32769
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0x66 0x0f 0x85 0xff 0x7f 0xff 0xff
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# CHECK: jbe -32769
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0x0f 0x86 0xff 0x7f 0xff 0xff
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# CHECK: jbe -32769
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0x66 0x0f 0x86 0xff 0x7f 0xff 0xff
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# CHECK: ja -32769
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0x0f 0x87 0xff 0x7f 0xff 0xff
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# CHECK: ja -32769
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0x66 0x0f 0x87 0xff 0x7f 0xff 0xff
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# CHECK: js -32769
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0x0f 0x88 0xff 0x7f 0xff 0xff
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# CHECK: js -32769
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0x66 0x0f 0x88 0xff 0x7f 0xff 0xff
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# CHECK: jns -32769
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0x0f 0x89 0xff 0x7f 0xff 0xff
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# CHECK: jns -32769
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0x66 0x0f 0x89 0xff 0x7f 0xff 0xff
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# CHECK: jp -32769
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0x0f 0x8a 0xff 0x7f 0xff 0xff
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# CHECK: jp -32769
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0x66 0x0f 0x8a 0xff 0x7f 0xff 0xff
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# CHECK: jnp -32769
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0x0f 0x8b 0xff 0x7f 0xff 0xff
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# CHECK: jnp -32769
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0x66 0x0f 0x8b 0xff 0x7f 0xff 0xff
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# CHECK: jl -32769
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0x0f 0x8c 0xff 0x7f 0xff 0xff
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# CHECK: jl -32769
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0x66 0x0f 0x8c 0xff 0x7f 0xff 0xff
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# CHECK: jge -32769
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0x0f 0x8d 0xff 0x7f 0xff 0xff
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# CHECK: jge -32769
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0x66 0x0f 0x8d 0xff 0x7f 0xff 0xff
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# CHECK: jle -32769
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0x0f 0x8e 0xff 0x7f 0xff 0xff
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# CHECK: jle -32769
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0x66 0x0f 0x8e 0xff 0x7f 0xff 0xff
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# CHECK: jg -32769
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0x0f 0x8f 0xff 0x7f 0xff 0xff
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# CHECK: jg -32769
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0x66 0x0f 0x8f 0xff 0x7f 0xff 0xff
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# CHECK: lcallw *-32769(%rip)
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0x66 0xff 0x1d 0xff 0x7f 0xff 0xff
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# CHECK: ljmpw *-32769(%rip)
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0x66 0xff 0x2d 0xff 0x7f 0xff 0xff
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# CHECK: psubsb (%rdx), %mm3
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0x0f 0xe8 0x1a
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# CHECK: psubsb (%rdx), %xmm3
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0x66 0x0f 0xe8 0x1a
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# CHECK: addq 255(%rip), %rbx
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0x49, 0x03, 0x1d, 0xff, 0x00, 0x00, 0x00
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# The following 4 encodings are equivalent, as confirmed by the 'xed64'
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# decoder tool provided by Intel, which we assume to be canonical even
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# if the real silicon does something different. If that should happen,
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# then we'll all have disassembler bugs to repair.
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# Try all combinations of EVEX.x and REX.b:
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# CHECK: vaddps 287453952(%rip), %zmm20, %zmm15
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0x62 0x11 0x5c 0x40 0x58 0x3d 0x00 0x33 0x22 0x11
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# CHECK: vaddps 287453952(%rip), %zmm20, %zmm15
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0x62 0x31 0x5c 0x40 0x58 0x3d 0x00 0x33 0x22 0x11
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# CHECK: vaddps 287453952(%rip), %zmm20, %zmm15
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0x62 0x51 0x5c 0x40 0x58 0x3d 0x00 0x33 0x22 0x11
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# CHECK: vaddps 287453952(%rip), %zmm20, %zmm15
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0x62 0x71 0x5c 0x40 0x58 0x3d 0x00 0x33 0x22 0x11
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# Known bugs: these use a SIB byte. The index register is incorrectly
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# printed as an xmm register. Indeed there are "gather" load instructions
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# taking a vector of indices, but ONLY those instructions can do that.
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# The CHECK lines test the current incorrect output; FIXME is desired.
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# CHECK: vaddps (%r10,%xmm9), %zmm20, %zmm15
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# FIXME: vaddps (%r10,%r9), %zmm20, %zmm15
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0x62 0x11 0x5c 0x40 0x58 0x3c 0x0a
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# CHECK: vaddps (%rdx,%xmm9), %zmm20, %zmm15
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# FIXME: vaddps (%rdx,%r9), %zmm20, %zmm15
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0x62 0x31 0x5c 0x40 0x58 0x3c 0x0a
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# CHECK: vaddps (%r10,%xmm1), %zmm20, %zmm15
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# FIXME: vaddps (%r10,%rcx), %zmm20, %zmm15
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0x62 0x51 0x5c 0x40 0x58 0x3c 0x0a
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# CHECK: vaddps (%rdx,%xmm1), %zmm20, %zmm15
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# FIXME: vaddps (%rdx,%rcx), %zmm20, %zmm15
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0x62 0x71 0x5c 0x40 0x58 0x3c 0x0a
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# CHECK: callq 32767
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0xe8 0xff 0x7f 0x00 0x00
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# CHECK: callq -32769
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0xe8 0xff 0x7f 0xff 0xff
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