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llvm-project/llvm/test/MC/X86/address-size.s

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Fix generation of the address size override prefix. Add assertions for the invalid cases. At least 16bit operand in 64bit mode is currently not rejected in the parser. llvm-svn: 153166
2012-03-21 13:48:07 +08:00
// RUN: llvm-mc -triple x86_64-unknown-unknown --show-encoding %s | FileCheck %s
.code64
movb $0x0, (%esi)
// CHECK: encoding: [0x67,0xc6,0x06,0x00]
movb $0x0, (%rsi)
// CHECK: encoding: [0xc6,0x06,0x00]
.code32
movb $0x0, (%si)
Fix ModR/M byte output for 16-bit addressing modes (PR18220) Add some tests to validate correct register selection, including a fix to an existing test which was requiring the *wrong* output. Patch from David Woodhouse. llvm-svn: 198566
2014-01-06 03:40:56 +08:00
// CHECK: encoding: [0x67,0xc6,0x04,0x00]
Fix generation of the address size override prefix. Add assertions for the invalid cases. At least 16bit operand in 64bit mode is currently not rejected in the parser. llvm-svn: 153166
2012-03-21 13:48:07 +08:00
movb $0x0, (%esi)
// CHECK: encoding: [0xc6,0x06,0x00]
Fix ModR/M byte output for 16-bit addressing modes (PR18220) Add some tests to validate correct register selection, including a fix to an existing test which was requiring the *wrong* output. Patch from David Woodhouse. llvm-svn: 198566
2014-01-06 03:40:56 +08:00
movw $0x1234, (%si)
// CHECK: encoding: [0x67,0x66,0xc7,0x04,0x34,0x12]
movl $0x12345678, (%bx,%si,1)
// CHECK: encoding: [0x67,0xc7,0x00,0x78,0x56,0x34,0x12]
movw $0x1234, 0x5678(%bp)
// CHECK: encoding: [0x67,0x66,0xc7,0x86,0x78,0x56,0x34,0x12]
[x86] Add basic support for .code16 This is not really expected to work right yet. Mostly because we will still emit the OpSize (0x66) prefix in all the wrong places, along with a number of other corner cases. Those will all be fixed in the subsequent commits. Patch from David Woodhouse. llvm-svn: 198584
2014-01-06 12:55:54 +08:00
.code16
movb $0x0, (%si)
// CHECK: encoding: [0xc6,0x04,0x00]
movb $0x0, (%esi)
// CHECK: encoding: [0x67,0xc6,0x06,0x00]
movb $0x5a, (%di,%bp,1)
// CHECK: encoding: [0xc6,0x03,0x5a]