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.bundle_align_mode 5
# We use these macros to test each pattern at every offset from
# bundle alignment, i.e. [0,31].
.macro offset_insn insn_name, offset
.p2align 5
\insn_name\()_offset_\offset\():
.if \offset
.space \offset, 0xf4
.endif
\insn_name
.endm
.macro test_offsets insn_name
offset_insn \insn_name, 0
offset_insn \insn_name, 1
offset_insn \insn_name, 2
offset_insn \insn_name, 3
offset_insn \insn_name, 4
offset_insn \insn_name, 5
offset_insn \insn_name, 6
offset_insn \insn_name, 7
offset_insn \insn_name, 8
offset_insn \insn_name, 9
offset_insn \insn_name, 10
offset_insn \insn_name, 11
offset_insn \insn_name, 12
offset_insn \insn_name, 13
offset_insn \insn_name, 14
offset_insn \insn_name, 15
offset_insn \insn_name, 16
offset_insn \insn_name, 17
offset_insn \insn_name, 18
offset_insn \insn_name, 19
offset_insn \insn_name, 20
offset_insn \insn_name, 21
offset_insn \insn_name, 22
offset_insn \insn_name, 23
offset_insn \insn_name, 24
offset_insn \insn_name, 25
offset_insn \insn_name, 26
offset_insn \insn_name, 27
offset_insn \insn_name, 28
offset_insn \insn_name, 29
offset_insn \insn_name, 30
offset_insn \insn_name, 31
.endm
# These are vanilla (non-relaxed) instructions of each length.
.macro test_1
inc %eax
.endm
.macro test_2
add %eax,%eax
.endm
.macro test_3
and $3,%eax
.endm
.macro test_4
lock and $3,(%eax)
.endm
.macro test_5
mov $0xaabbccdd,%eax
.endm
.macro test_6
movl %eax,0xaabbccdd(%esi)
.endm
.macro test_7
movl $0xaabbccdd,0x7f(%esi)
.endm
.macro test_8
lock addl $0xaabbccdd,0x10(%esi)
.endm
.macro test_9
lock addl $0xaabbccdd,%fs:0x10(%esi)
.endm
.macro test_10
movl $0xaabbccdd,0x7ff(%esi)
.endm
.macro test_11
lock addl $0xaabbccdd,0x7ff(%esi)
.endm
.macro test_12
lock addl $0xaabbccdd,%fs:0x7ff(%esi)
.endm
test_offsets test_1
test_offsets test_2
test_offsets test_3
test_offsets test_4
test_offsets test_5
test_offsets test_6
test_offsets test_7
test_offsets test_8
test_offsets test_9
test_offsets test_10
test_offsets test_11
test_offsets test_12
# The only relaxation cases are the jump instructions.
# For each of the three flavors of jump (unconditional, conditional,
# and conditional with prediction), we test a case that can be relaxed
# to its shortest form, and one that must use the long form.
.macro jmp_2
jmp jmp_2_\@
movl $0xdeadbeef,%eax
jmp_2_\@\():
movl $0xb00b,%eax
.endm
.macro jmp_5
jmp jmp_5_\@
.rept 128
inc %eax
.endr
jmp_5_\@\():
movl $0xb00b,%eax
.endm
.macro cjmp_2
jz cjmp_2_\@
movl $0xdeadbeef,%eax
cjmp_2_\@\():
movl $0xb00b,%eax
.endm
.macro cjmp_6
jz cjmp_6_\@
.rept 128
inc %eax
.endr
cjmp_6_\@\():
movl $0xb00b,%eax
.endm
.macro pjmp_3
jz,pt pjmp_3_\@
movl $0xdeadbeef,%eax
pjmp_3_\@\():
movl $0xb00b,%eax
.endm
.macro pjmp_7
jz,pt pjmp_7_\@
.rept 128
inc %eax
.endr
pjmp_7_\@\():
movl $0xb00b,%eax
.endm
test_offsets jmp_2
test_offsets cjmp_2
test_offsets pjmp_3
test_offsets jmp_5
test_offsets cjmp_6
test_offsets pjmp_7
.p2align 5
hlt
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