basic-thumb-instructions.s [plain text]
@---
@ Run these test in both Thumb1 and Thumb2 modes, as all of the encodings
@ should be valid, and parse the same, in both.
@---
@ RUN: llvm-mc -triple=thumbv6-apple-darwin -show-encoding < %s | FileCheck %s
@ RUN: llvm-mc -triple=thumbv7-apple-darwin -show-encoding < %s | FileCheck %s
.syntax unified
.globl _func
@ Check that the assembler can handle the documented syntax from the ARM ARM.
@ For complex constructs like shifter operands, check more thoroughly for them
@ once then spot check that following instructions accept the form generally.
@ This gives us good coverage while keeping the overall size of the test
@ more reasonable.
@ FIXME: Some 3-operand instructions have a 2-operand assembly syntax.
_func:
@ CHECK: _func
@------------------------------------------------------------------------------
@ ADC (register)
@------------------------------------------------------------------------------
adcs r4, r6
@ CHECK: adcs r4, r6 @ encoding: [0x74,0x41]
@------------------------------------------------------------------------------
@ ADD (immediate)
@------------------------------------------------------------------------------
adds r1, r2, #3
@ When Rd is not explicitly specified, encoding T2 is preferred even though
@ the literal is in the range [0,7] which would allow encoding T1.
adds r2, #3
adds r2, #8
@ CHECK: adds r1, r2, #3 @ encoding: [0xd1,0x1c]
@ CHECK: adds r2, #3 @ encoding: [0x03,0x32]
@ CHECK: adds r2, #8 @ encoding: [0x08,0x32]
@------------------------------------------------------------------------------
@ ADD (register)
@------------------------------------------------------------------------------
adds r1, r2, r3
add r2, r8
@ CHECK: adds r1, r2, r3 @ encoding: [0xd1,0x18]
@ CHECK: add r2, r8 @ encoding: [0x42,0x44]
@------------------------------------------------------------------------------
@ ADD (SP plus immediate)
@------------------------------------------------------------------------------
add sp, #4
add sp, #508
add sp, sp, #4
add r2, sp, #8
add r2, sp, #1020
@ CHECK: add sp, #4 @ encoding: [0x01,0xb0]
@ CHECK: add sp, #508 @ encoding: [0x7f,0xb0]
@ CHECK: add sp, #4 @ encoding: [0x01,0xb0]
@ CHECK: add r2, sp, #8 @ encoding: [0x02,0xaa]
@ CHECK: add r2, sp, #1020 @ encoding: [0xff,0xaa]
@------------------------------------------------------------------------------
@ ADD (SP plus register)
@------------------------------------------------------------------------------
add sp, r3
add r2, sp, r2
@ CHECK: add sp, r3 @ encoding: [0x9d,0x44]
@ CHECK: add r2, sp, r2 @ encoding: [0x6a,0x44]
@------------------------------------------------------------------------------
@ ADR
@------------------------------------------------------------------------------
adr r2, _baz
adr r2, #3
@ CHECK: adr r2, _baz @ encoding: [A,0xa2]
@ fixup A - offset: 0, value: _baz, kind: fixup_thumb_adr_pcrel_10
@ CHECK: adr r2, #3 @ encoding: [0x03,0xa2]
@------------------------------------------------------------------------------
@ ASR (immediate)
@------------------------------------------------------------------------------
asrs r2, r3, #32
asrs r2, r3, #5
asrs r2, r3, #1
@ CHECK: asrs r2, r3, #32 @ encoding: [0x1a,0x10]
@ CHECK: asrs r2, r3, #5 @ encoding: [0x5a,0x11]
@ CHECK: asrs r2, r3, #1 @ encoding: [0x5a,0x10]
@------------------------------------------------------------------------------
@ ASR (register)
@------------------------------------------------------------------------------
asrs r5, r2
@ CHECK: asrs r5, r2 @ encoding: [0x15,0x41]
@------------------------------------------------------------------------------
@ B
@------------------------------------------------------------------------------
b _baz
beq _bar
b #1838
b #-420
beq #336
beq #160
@ CHECK: b _baz @ encoding: [A,0xe0'A']
@ fixup A - offset: 0, value: _baz, kind: fixup_arm_thumb_br
@ CHECK: beq _bar @ encoding: [A,0xd0]
@ fixup A - offset: 0, value: _bar, kind: fixup_arm_thumb_bcc
@ CHECK: b #1838 @ encoding: [0x97,0xe3]
@ CHECK: b #-420 @ encoding: [0x2e,0xe7]
@ CHECK: beq #336 @ encoding: [0xa8,0xd0]
@ CHECK: beq #160 @ encoding: [0x50,0xd0]
@------------------------------------------------------------------------------
@ BL/BLX
@------------------------------------------------------------------------------
blx #884800
blx #1769600
@ CHECK: blx #884800 @ encoding: [0xd8,0xf0,0x20,0xe8]
@ CHECK: blx #1769600 @ encoding: [0xb0,0xf1,0x40,0xe8]
@------------------------------------------------------------------------------
@ BICS
@------------------------------------------------------------------------------
bics r1, r6
@ CHECK: bics r1, r6 @ encoding: [0xb1,0x43]
@------------------------------------------------------------------------------
@ BKPT
@------------------------------------------------------------------------------
bkpt #0
bkpt #255
@ CHECK: bkpt #0 @ encoding: [0x00,0xbe]
@ CHECK: bkpt #255 @ encoding: [0xff,0xbe]
@------------------------------------------------------------------------------
@ BL/BLX (immediate)
@------------------------------------------------------------------------------
bl _bar
blx _baz
@ CHECK: bl _bar @ encoding: [A,0xf0'A',A,0xf8'A']
@ fixup A - offset: 0, value: _bar, kind: fixup_arm_thumb_bl
@ CHECK: blx _baz @ encoding: [A,0xf0'A',A,0xe8'A']
@ fixup A - offset: 0, value: _baz, kind: fixup_arm_thumb_blx
@------------------------------------------------------------------------------
@ BLX (register)
@------------------------------------------------------------------------------
blx r4
@ CHECK: blx r4 @ encoding: [0xa0,0x47]
@------------------------------------------------------------------------------
@ BX
@------------------------------------------------------------------------------
bx r2
@ CHECK: bx r2 @ encoding: [0x10,0x47]
@------------------------------------------------------------------------------
@ CMN
@------------------------------------------------------------------------------
cmn r5, r1
@ CHECK: cmn r5, r1 @ encoding: [0xcd,0x42]
@------------------------------------------------------------------------------
@ CMP
@------------------------------------------------------------------------------
cmp r6, #32
cmp r3, r4
cmp r8, r1
@ CHECK: cmp r6, #32 @ encoding: [0x20,0x2e]
@ CHECK: cmp r3, r4 @ encoding: [0xa3,0x42]
@ CHECK: cmp r8, r1 @ encoding: [0x88,0x45]
@------------------------------------------------------------------------------
@ EOR
@------------------------------------------------------------------------------
eors r4, r5
@ CHECK: eors r4, r5 @ encoding: [0x6c,0x40]
@------------------------------------------------------------------------------
@ LDM
@------------------------------------------------------------------------------
ldm r3, {r0, r1, r2, r3, r4, r5, r6, r7}
ldm r2!, {r1, r3, r4, r5, r7}
ldm r1, {r1}
@ CHECK: ldm r3, {r0, r1, r2, r3, r4, r5, r6, r7} @ encoding: [0xff,0xcb]
@ CHECK: ldm r2!, {r1, r3, r4, r5, r7} @ encoding: [0xba,0xca]
@ CHECK: ldm r1, {r1} @ encoding: [0x02,0xc9]
@------------------------------------------------------------------------------
@ LDR (immediate)
@------------------------------------------------------------------------------
ldr r1, [r5]
ldr r2, [r6, #32]
ldr r3, [r7, #124]
ldr r1, [sp]
ldr r2, [sp, #24]
ldr r3, [sp, #1020]
@ CHECK: ldr r1, [r5] @ encoding: [0x29,0x68]
@ CHECK: ldr r2, [r6, #32] @ encoding: [0x32,0x6a]
@ CHECK: ldr r3, [r7, #124] @ encoding: [0xfb,0x6f]
@ CHECK: ldr r1, [sp] @ encoding: [0x00,0x99]
@ CHECK: ldr r2, [sp, #24] @ encoding: [0x06,0x9a]
@ CHECK: ldr r3, [sp, #1020] @ encoding: [0xff,0x9b]
@------------------------------------------------------------------------------
@ LDR (literal)
@------------------------------------------------------------------------------
ldr r1, _foo
ldr r3, #604
ldr r3, #368
@ CHECK: ldr r1, _foo @ encoding: [A,0x49]
@ fixup A - offset: 0, value: _foo, kind: fixup_arm_thumb_cp
@ CHECK: ldr r3, #604 @ encoding: [0x97,0x4b]
@ CHECK: ldr r3, #368 @ encoding: [0x5c,0x4b]
@------------------------------------------------------------------------------
@ LDR (register)
@------------------------------------------------------------------------------
ldr r1, [r2, r3]
@ CHECK: ldr r1, [r2, r3] @ encoding: [0xd1,0x58]
@------------------------------------------------------------------------------
@ LDRB (immediate)
@------------------------------------------------------------------------------
ldrb r4, [r3]
ldrb r5, [r6, #0]
ldrb r6, [r7, #31]
@ CHECK: ldrb r4, [r3] @ encoding: [0x1c,0x78]
@ CHECK: ldrb r5, [r6] @ encoding: [0x35,0x78]
@ CHECK: ldrb r6, [r7, #31] @ encoding: [0xfe,0x7f]
@------------------------------------------------------------------------------
@ LDRB (register)
@------------------------------------------------------------------------------
ldrb r6, [r4, r5]
@ CHECK: ldrb r6, [r4, r5] @ encoding: [0x66,0x5d]
@------------------------------------------------------------------------------
@ LDRH (immediate)
@------------------------------------------------------------------------------
ldrh r3, [r3]
ldrh r4, [r6, #2]
ldrh r5, [r7, #62]
@ CHECK: ldrh r3, [r3] @ encoding: [0x1b,0x88]
@ CHECK: ldrh r4, [r6, #2] @ encoding: [0x74,0x88]
@ CHECK: ldrh r5, [r7, #62] @ encoding: [0xfd,0x8f]
@------------------------------------------------------------------------------
@ LDRH (register)
@------------------------------------------------------------------------------
ldrh r6, [r2, r6]
@ CHECK: ldrh r6, [r2, r6] @ encoding: [0x96,0x5b]
@------------------------------------------------------------------------------
@ LDRSB/LDRSH
@------------------------------------------------------------------------------
ldrsb r6, [r2, r6]
ldrsh r3, [r7, r1]
@ CHECK: ldrsb r6, [r2, r6] @ encoding: [0x96,0x57]
@ CHECK: ldrsh r3, [r7, r1] @ encoding: [0x7b,0x5e]
@------------------------------------------------------------------------------
@ LSL (immediate)
@------------------------------------------------------------------------------
lsls r4, r5, #0
lsls r4, r5, #4
@ CHECK: lsls r4, r5, #0 @ encoding: [0x2c,0x00]
@ CHECK: lsls r4, r5, #4 @ encoding: [0x2c,0x01]
@------------------------------------------------------------------------------
@ LSL (register)
@------------------------------------------------------------------------------
lsls r2, r6
@ CHECK: lsls r2, r6 @ encoding: [0xb2,0x40]
@------------------------------------------------------------------------------
@ LSR (immediate)
@------------------------------------------------------------------------------
lsrs r1, r3, #1
lsrs r1, r3, #32
@ CHECK: lsrs r1, r3, #1 @ encoding: [0x59,0x08]
@ CHECK: lsrs r1, r3, #32 @ encoding: [0x19,0x08]
@------------------------------------------------------------------------------
@ LSR (register)
@------------------------------------------------------------------------------
lsrs r2, r6
@ CHECK: lsrs r2, r6 @ encoding: [0xf2,0x40]
@------------------------------------------------------------------------------
@ MOV (immediate)
@------------------------------------------------------------------------------
movs r2, #0
movs r2, #255
movs r2, #23
@ CHECK: movs r2, #0 @ encoding: [0x00,0x22]
@ CHECK: movs r2, #255 @ encoding: [0xff,0x22]
@ CHECK: movs r2, #23 @ encoding: [0x17,0x22]
@------------------------------------------------------------------------------
@ MOV (register)
@------------------------------------------------------------------------------
mov r3, r4
movs r1, r3
@ CHECK: mov r3, r4 @ encoding: [0x23,0x46]
@ CHECK: movs r1, r3 @ encoding: [0x19,0x00]
@------------------------------------------------------------------------------
@ MUL
@------------------------------------------------------------------------------
muls r1, r2, r1
muls r3, r4
@ CHECK: muls r1, r2, r1 @ encoding: [0x51,0x43]
@ CHECK: muls r3, r4, r3 @ encoding: [0x63,0x43]
@------------------------------------------------------------------------------
@ MVN
@------------------------------------------------------------------------------
mvns r6, r3
@ CHECK: mvns r6, r3 @ encoding: [0xde,0x43]
@------------------------------------------------------------------------------
@ NEG
@------------------------------------------------------------------------------
negs r3, r4
@ CHECK: rsbs r3, r4, #0 @ encoding: [0x63,0x42]
@------------------------------------------------------------------------------
@ ORR
@------------------------------------------------------------------------------
orrs r3, r4
@ CHECK-ERRORS: orrs r3, r4 @ encoding: [0x23,0x43]
@------------------------------------------------------------------------------
@ POP
@------------------------------------------------------------------------------
pop {r2, r3, r6}
@ CHECK: pop {r2, r3, r6} @ encoding: [0x4c,0xbc]
@------------------------------------------------------------------------------
@ PUSH
@------------------------------------------------------------------------------
push {r1, r2, r7}
@ CHECK: push {r1, r2, r7} @ encoding: [0x86,0xb4]
@------------------------------------------------------------------------------
@ REV/REV16/REVSH
@------------------------------------------------------------------------------
rev r6, r3
rev16 r7, r2
revsh r5, r1
@ CHECK: rev r6, r3 @ encoding: [0x1e,0xba]
@ CHECK: rev16 r7, r2 @ encoding: [0x57,0xba]
@ CHECK: revsh r5, r1 @ encoding: [0xcd,0xba]
@------------------------------------------------------------------------------
@ ROR
@------------------------------------------------------------------------------
rors r2, r7
@ CHECK: rors r2, r7 @ encoding: [0xfa,0x41]
@------------------------------------------------------------------------------
@ RSB
@------------------------------------------------------------------------------
rsbs r1, r3, #0
@ CHECK: rsbs r1, r3, #0 @ encoding: [0x59,0x42]
@------------------------------------------------------------------------------
@ SBC
@------------------------------------------------------------------------------
sbcs r4, r3
@ CHECK: sbcs r4, r3 @ encoding: [0x9c,0x41]
@------------------------------------------------------------------------------
@ SETEND
@------------------------------------------------------------------------------
setend be
setend le
@ CHECK: setend be @ encoding: [0x58,0xb6]
@ CHECK: setend le @ encoding: [0x50,0xb6]
@------------------------------------------------------------------------------
@ STM
@------------------------------------------------------------------------------
stm r1!, {r2, r6}
stm r1!, {r1, r2, r3, r7}
@ CHECK: stm r1!, {r2, r6} @ encoding: [0x44,0xc1]
@ CHECK: stm r1!, {r1, r2, r3, r7} @ encoding: [0x8e,0xc1]
@------------------------------------------------------------------------------
@ STR (immediate)
@------------------------------------------------------------------------------
str r2, [r7]
str r2, [r7, #0]
str r5, [r1, #4]
str r3, [r7, #124]
str r2, [sp]
str r3, [sp, #0]
str r4, [sp, #20]
str r5, [sp, #1020]
@ CHECK: str r2, [r7] @ encoding: [0x3a,0x60]
@ CHECK: str r2, [r7] @ encoding: [0x3a,0x60]
@ CHECK: str r5, [r1, #4] @ encoding: [0x4d,0x60]
@ CHECK: str r3, [r7, #124] @ encoding: [0xfb,0x67]
@ CHECK: str r2, [sp] @ encoding: [0x00,0x92]
@ CHECK: str r3, [sp] @ encoding: [0x00,0x93]
@ CHECK: str r4, [sp, #20] @ encoding: [0x05,0x94]
@ CHECK: str r5, [sp, #1020] @ encoding: [0xff,0x95]
@------------------------------------------------------------------------------
@ STR (register)
@------------------------------------------------------------------------------
str r2, [r7, r3]
@ CHECK: str r2, [r7, r3] @ encoding: [0xfa,0x50]
@------------------------------------------------------------------------------
@ STRB (immediate)
@------------------------------------------------------------------------------
strb r4, [r3]
strb r5, [r6, #0]
strb r6, [r7, #31]
@ CHECK: strb r4, [r3] @ encoding: [0x1c,0x70]
@ CHECK: strb r5, [r6] @ encoding: [0x35,0x70]
@ CHECK: strb r6, [r7, #31] @ encoding: [0xfe,0x77]
@------------------------------------------------------------------------------
@ STRB (register)
@------------------------------------------------------------------------------
strb r6, [r4, r5]
@ CHECK: strb r6, [r4, r5] @ encoding: [0x66,0x55]
@------------------------------------------------------------------------------
@ STRH (immediate)
@------------------------------------------------------------------------------
strh r3, [r3]
strh r4, [r6, #2]
strh r5, [r7, #62]
@ CHECK: strh r3, [r3] @ encoding: [0x1b,0x80]
@ CHECK: strh r4, [r6, #2] @ encoding: [0x74,0x80]
@ CHECK: strh r5, [r7, #62] @ encoding: [0xfd,0x87]
@------------------------------------------------------------------------------
@ STRH (register)
@------------------------------------------------------------------------------
strh r6, [r2, r6]
@ CHECK: strh r6, [r2, r6] @ encoding: [0x96,0x53]
@------------------------------------------------------------------------------
@ SUB (immediate)
@------------------------------------------------------------------------------
subs r1, r2, #3
subs r2, #3
subs r2, #8
@ CHECK: subs r1, r2, #3 @ encoding: [0xd1,0x1e]
@ CHECK: subs r2, #3 @ encoding: [0x03,0x3a]
@ CHECK: subs r2, #8 @ encoding: [0x08,0x3a]
@------------------------------------------------------------------------------
@ SUB (SP minus immediate)
@------------------------------------------------------------------------------
sub sp, #12
sub sp, sp, #508
@ CHECK: sub sp, #12 @ encoding: [0x83,0xb0]
@ CHECK: sub sp, #508 @ encoding: [0xff,0xb0]
@------------------------------------------------------------------------------
@ SUB (register)
@------------------------------------------------------------------------------
subs r1, r2, r3
@ CHECK: subs r1, r2, r3 @ encoding: [0xd1,0x1a]
@------------------------------------------------------------------------------
@ SVC
@------------------------------------------------------------------------------
svc #0
svc #255
@ CHECK: svc #0 @ encoding: [0x00,0xdf]
@ CHECK: svc #255 @ encoding: [0xff,0xdf]
@------------------------------------------------------------------------------
@ SXTB/SXTH
@------------------------------------------------------------------------------
sxtb r3, r5
sxth r3, r5
@ CHECK: sxtb r3, r5 @ encoding: [0x6b,0xb2]
@ CHECK: sxth r3, r5 @ encoding: [0x2b,0xb2]
@------------------------------------------------------------------------------
@ TST
@------------------------------------------------------------------------------
tst r6, r1
@ CHECK: tst r6, r1 @ encoding: [0x0e,0x42]
@------------------------------------------------------------------------------
@ UXTB/UXTH
@------------------------------------------------------------------------------
uxtb r7, r2
uxth r1, r4
@ CHECK: uxtb r7, r2 @ encoding: [0xd7,0xb2]
@ CHECK: uxth r1, r4 @ encoding: [0xa1,0xb2]
@------------------------------------------------------------------------------
@ WFE/WFI/YIELD
@------------------------------------------------------------------------------
wfe
wfi
yield
@ CHECK: wfe @ encoding: [0x20,0xbf]
@ CHECK: wfi @ encoding: [0x30,0xbf]
@ CHECK: yield @ encoding: [0x10,0xbf]