// Copyright 2011 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
#include <stdlib.h>
#include "v8.h"
#include "debug.h"
#include "disasm.h"
#include "disassembler.h"
#include "macro-assembler.h"
#include "serialize.h"
#include "cctest.h"
using namespace v8::internal;
static v8::Persistent<v8::Context> env;
static void InitializeVM() {
if (env.IsEmpty()) {
env = v8::Context::New();
}
}
bool DisassembleAndCompare(byte* pc, const char* compare_string) {
disasm::NameConverter converter;
disasm::Disassembler disasm(converter);
EmbeddedVector<char, 128> disasm_buffer;
disasm.InstructionDecode(disasm_buffer, pc);
if (strcmp(compare_string, disasm_buffer.start()) != 0) {
fprintf(stderr,
"expected: \n"
"%s\n"
"disassembled: \n"
"%s\n\n",
compare_string, disasm_buffer.start());
return false;
}
return true;
}
// Setup V8 to a state where we can at least run the assembler and
// disassembler. Declare the variables and allocate the data structures used
// in the rest of the macros.
#define SETUP() \
InitializeVM(); \
v8::HandleScope scope; \
byte *buffer = reinterpret_cast<byte*>(malloc(4*1024)); \
Assembler assm(Isolate::Current(), buffer, 4*1024); \
bool failure = false;
// This macro assembles one instruction using the preallocated assembler and
// disassembles the generated instruction, comparing the output to the expected
// value. If the comparison fails an error message is printed, but the test
// continues to run until the end.
#define COMPARE(asm_, compare_string) \
{ \
int pc_offset = assm.pc_offset(); \
byte *progcounter = &buffer[pc_offset]; \
assm.asm_; \
if (!DisassembleAndCompare(progcounter, compare_string)) failure = true; \
}
// Verify that all invocations of the COMPARE macro passed successfully.
// Exit with a failure if at least one of the tests failed.
#define VERIFY_RUN() \
if (failure) { \
V8_Fatal(__FILE__, __LINE__, "ARM Disassembler tests failed.\n"); \
}
TEST(Type0) {
SETUP();
COMPARE(and_(r0, r1, Operand(r2)),
"e0010002 and r0, r1, r2");
COMPARE(and_(r1, r2, Operand(r3), LeaveCC),
"e0021003 and r1, r2, r3");
COMPARE(and_(r2, r3, Operand(r4), SetCC),
"e0132004 ands r2, r3, r4");
COMPARE(and_(r3, r4, Operand(r5), LeaveCC, eq),
"00043005 andeq r3, r4, r5");
COMPARE(eor(r4, r5, Operand(r6, LSL, 0)),
"e0254006 eor r4, r5, r6");
COMPARE(eor(r4, r5, Operand(r7, LSL, 1), SetCC),
"e0354087 eors r4, r5, r7, lsl #1");
COMPARE(eor(r4, r5, Operand(r8, LSL, 2), LeaveCC, ne),
"10254108 eorne r4, r5, r8, lsl #2");
COMPARE(eor(r4, r5, Operand(r9, LSL, 3), SetCC, cs),
"20354189 eorcss r4, r5, r9, lsl #3");
COMPARE(sub(r5, r6, Operand(r10, LSL, 31), LeaveCC, hs),
"20465f8a subcs r5, r6, r10, lsl #31");
COMPARE(sub(r5, r6, Operand(r10, LSL, 30), SetCC, cc),
"30565f0a subccs r5, r6, r10, lsl #30");
COMPARE(sub(r5, r6, Operand(r10, LSL, 24), LeaveCC, lo),
"30465c0a subcc r5, r6, r10, lsl #24");
COMPARE(sub(r5, r6, Operand(r10, LSL, 16), SetCC, mi),
"4056580a submis r5, r6, r10, lsl #16");
COMPARE(rsb(r6, r7, Operand(fp)),
"e067600b rsb r6, r7, fp");
COMPARE(rsb(r6, r7, Operand(fp, LSR, 1)),
"e06760ab rsb r6, r7, fp, lsr #1");
COMPARE(rsb(r6, r7, Operand(fp, LSR, 0), SetCC),
"e077602b rsbs r6, r7, fp, lsr #32");
COMPARE(rsb(r6, r7, Operand(fp, LSR, 31), LeaveCC, pl),
"50676fab rsbpl r6, r7, fp, lsr #31");
COMPARE(add(r7, r8, Operand(ip, ASR, 1)),
"e08870cc add r7, r8, ip, asr #1");
COMPARE(add(r7, r8, Operand(ip, ASR, 0)),
"e088704c add r7, r8, ip, asr #32");
COMPARE(add(r7, r8, Operand(ip), SetCC),
"e098700c adds r7, r8, ip");
COMPARE(add(r7, r8, Operand(ip, ASR, 31), SetCC, vs),
"60987fcc addvss r7, r8, ip, asr #31");
COMPARE(adc(r7, fp, Operand(ip, ASR, 5)),
"e0ab72cc adc r7, fp, ip, asr #5");
COMPARE(adc(r4, ip, Operand(ip, ASR, 1), LeaveCC, vc),
"70ac40cc adcvc r4, ip, ip, asr #1");
COMPARE(adc(r5, sp, Operand(ip), SetCC),
"e0bd500c adcs r5, sp, ip");
COMPARE(adc(r8, lr, Operand(ip, ASR, 31), SetCC, vc),
"70be8fcc adcvcs r8, lr, ip, asr #31");
COMPARE(sbc(r7, r1, Operand(ip, ROR, 1), LeaveCC, hi),
"80c170ec sbchi r7, r1, ip, ror #1");
COMPARE(sbc(r7, r9, Operand(ip, ROR, 4)),
"e0c9726c sbc r7, r9, ip, ror #4");
COMPARE(sbc(r7, r10, Operand(ip), SetCC),
"e0da700c sbcs r7, r10, ip");
COMPARE(sbc(r7, ip, Operand(ip, ROR, 31), SetCC, hi),
"80dc7fec sbchis r7, ip, ip, ror #31");
COMPARE(rsc(r7, r8, Operand(ip, LSL, r0)),
"e0e8701c rsc r7, r8, ip, lsl r0");
COMPARE(rsc(r7, r8, Operand(ip, LSL, r1)),
"e0e8711c rsc r7, r8, ip, lsl r1");
COMPARE(rsc(r7, r8, Operand(ip), SetCC),
"e0f8700c rscs r7, r8, ip");
COMPARE(rsc(r7, r8, Operand(ip, LSL, r3), SetCC, ls),
"90f8731c rsclss r7, r8, ip, lsl r3");
COMPARE(tst(r7, Operand(r5, ASR, ip), ge),
"a1170c55 tstge r7, r5, asr ip");
COMPARE(tst(r7, Operand(r6, ASR, sp)),
"e1170d56 tst r7, r6, asr sp");
COMPARE(tst(r7, Operand(r7), ge),
"a1170007 tstge r7, r7");
COMPARE(tst(r7, Operand(r8, ASR, fp), ge),
"a1170b58 tstge r7, r8, asr fp");
COMPARE(teq(r7, Operand(r5, ROR, r0), lt),
"b1370075 teqlt r7, r5, ror r0");
COMPARE(teq(r7, Operand(r6, ROR, lr)),
"e1370e76 teq r7, r6, ror lr");
COMPARE(teq(r7, Operand(r7), lt),
"b1370007 teqlt r7, r7");
COMPARE(teq(r7, Operand(r8, ROR, r1)),
"e1370178 teq r7, r8, ror r1");
COMPARE(cmp(r7, Operand(r4)),
"e1570004 cmp r7, r4");
COMPARE(cmp(r7, Operand(r6, LSL, 1), gt),
"c1570086 cmpgt r7, r6, lsl #1");
COMPARE(cmp(r7, Operand(r8, LSR, 3), gt),
"c15701a8 cmpgt r7, r8, lsr #3");
COMPARE(cmp(r7, Operand(r8, ASR, 19)),
"e15709c8 cmp r7, r8, asr #19");
COMPARE(cmn(r0, Operand(r4)),
"e1700004 cmn r0, r4");
COMPARE(cmn(r1, Operand(r6, ROR, 1)),
"e17100e6 cmn r1, r6, ror #1");
COMPARE(cmn(r2, Operand(r8)),
"e1720008 cmn r2, r8");
COMPARE(cmn(r3, Operand(fp), le),
"d173000b cmnle r3, fp");
COMPARE(orr(r7, r8, Operand(lr), LeaveCC, al),
"e188700e orr r7, r8, lr");
COMPARE(orr(r7, r8, Operand(fp)),
"e188700b orr r7, r8, fp");
COMPARE(orr(r7, r8, Operand(sp), SetCC),
"e198700d orrs r7, r8, sp");
COMPARE(orr(r7, r8, Operand(ip), SetCC, al),
"e198700c orrs r7, r8, ip");
COMPARE(mov(r0, Operand(r1), LeaveCC, eq),
"01a00001 moveq r0, r1");
COMPARE(mov(r0, Operand(r2)),
"e1a00002 mov r0, r2");
COMPARE(mov(r0, Operand(r3), SetCC),
"e1b00003 movs r0, r3");
COMPARE(mov(r0, Operand(r4), SetCC, pl),
"51b00004 movpls r0, r4");
COMPARE(bic(r0, lr, Operand(r1), LeaveCC, vs),
"61ce0001 bicvs r0, lr, r1");
COMPARE(bic(r0, r9, Operand(r2), LeaveCC, vc),
"71c90002 bicvc r0, r9, r2");
COMPARE(bic(r0, r5, Operand(r3), SetCC),
"e1d50003 bics r0, r5, r3");
COMPARE(bic(r0, r1, Operand(r4), SetCC, pl),
"51d10004 bicpls r0, r1, r4");
COMPARE(mvn(r10, Operand(r1)),
"e1e0a001 mvn r10, r1");
COMPARE(mvn(r9, Operand(r2)),
"e1e09002 mvn r9, r2");
COMPARE(mvn(r0, Operand(r3), SetCC),
"e1f00003 mvns r0, r3");
COMPARE(mvn(r5, Operand(r4), SetCC, cc),
"31f05004 mvnccs r5, r4");
// Instructions autotransformed by the assembler.
// mov -> mvn.
COMPARE(mov(r3, Operand(-1), LeaveCC, al),
"e3e03000 mvn r3, #0");
COMPARE(mov(r4, Operand(-2), SetCC, al),
"e3f04001 mvns r4, #1");
COMPARE(mov(r5, Operand(0x0ffffff0), SetCC, ne),
"13f052ff mvnnes r5, #-268435441");
COMPARE(mov(r6, Operand(-1), LeaveCC, ne),
"13e06000 mvnne r6, #0");
// mvn -> mov.
COMPARE(mvn(r3, Operand(-1), LeaveCC, al),
"e3a03000 mov r3, #0");
COMPARE(mvn(r4, Operand(-2), SetCC, al),
"e3b04001 movs r4, #1");
COMPARE(mvn(r5, Operand(0x0ffffff0), SetCC, ne),
"13b052ff movnes r5, #-268435441");
COMPARE(mvn(r6, Operand(-1), LeaveCC, ne),
"13a06000 movne r6, #0");
// mov -> movw.
if (CpuFeatures::IsSupported(ARMv7)) {
COMPARE(mov(r5, Operand(0x01234), LeaveCC, ne),
"13015234 movwne r5, #4660");
// We only disassemble one instruction so the eor instruction is not here.
COMPARE(eor(r5, r4, Operand(0x1234), LeaveCC, ne),
"1301c234 movwne ip, #4660");
// Movw can't do setcc so we don't get that here. Mov immediate with setcc
// is pretty strange anyway.
COMPARE(mov(r5, Operand(0x01234), SetCC, ne),
"159fc000 ldrne ip, [pc, #+0]");
// We only disassemble one instruction so the eor instruction is not here.
// The eor does the setcc so we get a movw here.
COMPARE(eor(r5, r4, Operand(0x1234), SetCC, ne),
"1301c234 movwne ip, #4660");
COMPARE(movt(r5, 0x4321, ne),
"13445321 movtne r5, #17185");
COMPARE(movw(r5, 0xabcd, eq),
"030a5bcd movweq r5, #43981");
}
// Eor doesn't have an eor-negative variant, but we can do an mvn followed by
// an eor to get the same effect.
COMPARE(eor(r5, r4, Operand(0xffffff34), SetCC, ne),
"13e0c0cb mvnne ip, #203");
// and <-> bic.
COMPARE(and_(r3, r5, Operand(0xfc03ffff)),
"e3c537ff bic r3, r5, #66846720");
COMPARE(bic(r3, r5, Operand(0xfc03ffff)),
"e20537ff and r3, r5, #66846720");
// sub <-> add.
COMPARE(add(r3, r5, Operand(-1024)),
"e2453b01 sub r3, r5, #1024");
COMPARE(sub(r3, r5, Operand(-1024)),
"e2853b01 add r3, r5, #1024");
// cmp <-> cmn.
COMPARE(cmp(r3, Operand(-1024)),
"e3730b01 cmn r3, #1024");
COMPARE(cmn(r3, Operand(-1024)),
"e3530b01 cmp r3, #1024");
// Miscellaneous instructions encoded as type 0.
COMPARE(blx(ip),
"e12fff3c blx ip");
COMPARE(bkpt(0),
"e1200070 bkpt 0");
COMPARE(bkpt(0xffff),
"e12fff7f bkpt 65535");
COMPARE(clz(r6, r7),
"e16f6f17 clz r6, r7");
VERIFY_RUN();
}
TEST(Type1) {
SETUP();
COMPARE(and_(r0, r1, Operand(0x00000000)),
"e2010000 and r0, r1, #0");
COMPARE(and_(r1, r2, Operand(0x00000001), LeaveCC),
"e2021001 and r1, r2, #1");
COMPARE(and_(r2, r3, Operand(0x00000010), SetCC),
"e2132010 ands r2, r3, #16");
COMPARE(and_(r3, r4, Operand(0x00000100), LeaveCC, eq),
"02043c01 andeq r3, r4, #256");
COMPARE(and_(r4, r5, Operand(0x00001000), SetCC, ne),
"12154a01 andnes r4, r5, #4096");
COMPARE(eor(r4, r5, Operand(0x00001000)),
"e2254a01 eor r4, r5, #4096");
COMPARE(eor(r4, r4, Operand(0x00010000), LeaveCC),
"e2244801 eor r4, r4, #65536");
COMPARE(eor(r4, r3, Operand(0x00100000), SetCC),
"e2334601 eors r4, r3, #1048576");
COMPARE(eor(r4, r2, Operand(0x01000000), LeaveCC, cs),
"22224401 eorcs r4, r2, #16777216");
COMPARE(eor(r4, r1, Operand(0x10000000), SetCC, cc),
"32314201 eorccs r4, r1, #268435456");
VERIFY_RUN();
}
TEST(Type3) {
SETUP();
if (CpuFeatures::IsSupported(ARMv7)) {
COMPARE(ubfx(r0, r1, 5, 10),
"e7e902d1 ubfx r0, r1, #5, #10");
COMPARE(ubfx(r1, r0, 5, 10),
"e7e912d0 ubfx r1, r0, #5, #10");
COMPARE(ubfx(r0, r1, 31, 1),
"e7e00fd1 ubfx r0, r1, #31, #1");
COMPARE(ubfx(r1, r0, 31, 1),
"e7e01fd0 ubfx r1, r0, #31, #1");
COMPARE(sbfx(r0, r1, 5, 10),
"e7a902d1 sbfx r0, r1, #5, #10");
COMPARE(sbfx(r1, r0, 5, 10),
"e7a912d0 sbfx r1, r0, #5, #10");
COMPARE(sbfx(r0, r1, 31, 1),
"e7a00fd1 sbfx r0, r1, #31, #1");
COMPARE(sbfx(r1, r0, 31, 1),
"e7a01fd0 sbfx r1, r0, #31, #1");
COMPARE(bfc(r0, 5, 10),
"e7ce029f bfc r0, #5, #10");
COMPARE(bfc(r1, 5, 10),
"e7ce129f bfc r1, #5, #10");
COMPARE(bfc(r0, 31, 1),
"e7df0f9f bfc r0, #31, #1");
COMPARE(bfc(r1, 31, 1),
"e7df1f9f bfc r1, #31, #1");
COMPARE(bfi(r0, r1, 5, 10),
"e7ce0291 bfi r0, r1, #5, #10");
COMPARE(bfi(r1, r0, 5, 10),
"e7ce1290 bfi r1, r0, #5, #10");
COMPARE(bfi(r0, r1, 31, 1),
"e7df0f91 bfi r0, r1, #31, #1");
COMPARE(bfi(r1, r0, 31, 1),
"e7df1f90 bfi r1, r0, #31, #1");
COMPARE(usat(r0, 1, Operand(r1)),
"e6e10011 usat r0, #1, r1");
COMPARE(usat(r2, 7, Operand(lr)),
"e6e7201e usat r2, #7, lr");
COMPARE(usat(r3, 31, Operand(r4, LSL, 31)),
"e6ff3f94 usat r3, #31, r4, lsl #31");
COMPARE(usat(r8, 0, Operand(r5, ASR, 17)),
"e6e088d5 usat r8, #0, r5, asr #17");
}
VERIFY_RUN();
}
TEST(Vfp) {
SETUP();
if (CpuFeatures::IsSupported(VFP3)) {
CpuFeatures::Scope scope(VFP3);
COMPARE(vmov(d0, d1),
"eeb00b41 vmov.f64 d0, d1");
COMPARE(vmov(d3, d3, eq),
"0eb03b43 vmov.f64eq d3, d3");
COMPARE(vmov(s0, s31),
"eeb00a6f vmov.f32 s0, s31");
COMPARE(vmov(s31, s0),
"eef0fa40 vmov.f32 s31, s0");
COMPARE(vmov(r0, s0),
"ee100a10 vmov r0, s0");
COMPARE(vmov(r10, s31),
"ee1faa90 vmov r10, s31");
COMPARE(vmov(s0, r0),
"ee000a10 vmov s0, r0");
COMPARE(vmov(s31, r10),
"ee0faa90 vmov s31, r10");
COMPARE(vabs(d0, d1),
"eeb00bc1 vabs d0, d1");
COMPARE(vabs(d3, d4, mi),
"4eb03bc4 vabsmi d3, d4");
COMPARE(vneg(d0, d1),
"eeb10b41 vneg d0, d1");
COMPARE(vneg(d3, d4, mi),
"4eb13b44 vnegmi d3, d4");
COMPARE(vadd(d0, d1, d2),
"ee310b02 vadd.f64 d0, d1, d2");
COMPARE(vadd(d3, d4, d5, mi),
"4e343b05 vadd.f64mi d3, d4, d5");
COMPARE(vsub(d0, d1, d2),
"ee310b42 vsub.f64 d0, d1, d2");
COMPARE(vsub(d3, d4, d5, ne),
"1e343b45 vsub.f64ne d3, d4, d5");
COMPARE(vmul(d2, d1, d0),
"ee212b00 vmul.f64 d2, d1, d0");
COMPARE(vmul(d6, d4, d5, cc),
"3e246b05 vmul.f64cc d6, d4, d5");
COMPARE(vdiv(d2, d2, d2),
"ee822b02 vdiv.f64 d2, d2, d2");
COMPARE(vdiv(d6, d7, d7, hi),
"8e876b07 vdiv.f64hi d6, d7, d7");
COMPARE(vsqrt(d0, d0),
"eeb10bc0 vsqrt.f64 d0, d0");
COMPARE(vsqrt(d2, d3, ne),
"1eb12bc3 vsqrt.f64ne d2, d3");
COMPARE(vmov(d0, 1.0),
"eeb70b00 vmov.f64 d0, #1");
COMPARE(vmov(d2, -13.0),
"eeba2b0a vmov.f64 d2, #-13");
COMPARE(vldr(s0, r0, 0),
"ed900a00 vldr s0, [r0 + 4*0]");
COMPARE(vldr(s1, r1, 4),
"edd10a01 vldr s1, [r1 + 4*1]");
COMPARE(vldr(s15, r4, 16),
"edd47a04 vldr s15, [r4 + 4*4]");
COMPARE(vldr(s16, r5, 20),
"ed958a05 vldr s16, [r5 + 4*5]");
COMPARE(vldr(s31, r10, 1020),
"eddafaff vldr s31, [r10 + 4*255]");
COMPARE(vstr(s0, r0, 0),
"ed800a00 vstr s0, [r0 + 4*0]");
COMPARE(vstr(s1, r1, 4),
"edc10a01 vstr s1, [r1 + 4*1]");
COMPARE(vstr(s15, r8, 8),
"edc87a02 vstr s15, [r8 + 4*2]");
COMPARE(vstr(s16, r9, 12),
"ed898a03 vstr s16, [r9 + 4*3]");
COMPARE(vstr(s31, r10, 1020),
"edcafaff vstr s31, [r10 + 4*255]");
COMPARE(vldr(d0, r0, 0),
"ed900b00 vldr d0, [r0 + 4*0]");
COMPARE(vldr(d1, r1, 4),
"ed911b01 vldr d1, [r1 + 4*1]");
COMPARE(vldr(d15, r10, 1020),
"ed9afbff vldr d15, [r10 + 4*255]");
COMPARE(vstr(d0, r0, 0),
"ed800b00 vstr d0, [r0 + 4*0]");
COMPARE(vstr(d1, r1, 4),
"ed811b01 vstr d1, [r1 + 4*1]");
COMPARE(vstr(d15, r10, 1020),
"ed8afbff vstr d15, [r10 + 4*255]");
COMPARE(vmsr(r5),
"eee15a10 vmsr FPSCR, r5");
COMPARE(vmsr(r10, pl),
"5ee1aa10 vmsrpl FPSCR, r10");
COMPARE(vmsr(pc),
"eee1fa10 vmsr FPSCR, APSR");
COMPARE(vmrs(r5),
"eef15a10 vmrs r5, FPSCR");
COMPARE(vmrs(r10, ge),
"aef1aa10 vmrsge r10, FPSCR");
COMPARE(vmrs(pc),
"eef1fa10 vmrs APSR, FPSCR");
COMPARE(vstm(ia, r0, d1, d3),
"ec801b06 vstmia r0, {d1-d3}");
COMPARE(vldm(ia, r1, d2, d5),
"ec912b08 vldmia r1, {d2-d5}");
COMPARE(vstm(ia, r2, d0, d15),
"ec820b20 vstmia r2, {d0-d15}");
COMPARE(vldm(ia, r3, d0, d15),
"ec930b20 vldmia r3, {d0-d15}");
COMPARE(vstm(ia, r4, s1, s3),
"ecc40a03 vstmia r4, {s1-s3}");
COMPARE(vldm(ia, r5, s2, s5),
"ec951a04 vldmia r5, {s2-s5}");
COMPARE(vstm(ia, r6, s0, s31),
"ec860a20 vstmia r6, {s0-s31}");
COMPARE(vldm(ia, r7, s0, s31),
"ec970a20 vldmia r7, {s0-s31}");
}
VERIFY_RUN();
}