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use setProtectModeRE

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MITSUNARI Shigeo 6 years ago
parent c47fdddc17
commit 6b1f2f7e81
2 changed files with 48 additions and 78 deletions
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  1. 122
      src/fp_generator.hpp
  2. 4
      test/fp_generator_test.cpp

122
src/fp_generator.hpp
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@ -126,7 +126,7 @@ if (rm.isReg()) { \
namespace fp {
struct Code : Xbyak::CodeGenerator {
struct FpGenerator : Xbyak::CodeGenerator {
typedef Xbyak::RegExp RegExp;
typedef Xbyak::Reg64 Reg64;
typedef Xbyak::Xmm Xmm;
@ -213,16 +213,12 @@ struct Code : Xbyak::CodeGenerator {
typedef int (*int2op)(uint64_t*, const uint64_t*);
void4u mul_;
uint3opI mulUnit_;
// the following labels assume sf(this, 3, 10 | UseRDX)
Label mulPreL_;
Label fpDbl_modL_;
Label fp_mulL_;
/*
@param op [in] ; use op.p, op.N, op.isFullBit
*/
Code(size_t codeSize, uint8_t *mem, Op& op)
: CodeGenerator(codeSize, mem)
FpGenerator()
: CodeGenerator(4096 * 8, Xbyak::DontSetProtectRWE)
#ifdef XBYAK64_WIN
, gp0(rcx)
, gp1(r11)
@ -256,7 +252,21 @@ struct Code : Xbyak::CodeGenerator {
{
useMulx_ = cpu_.has(Xbyak::util::Cpu::tBMI2);
useAdx_ = cpu_.has(Xbyak::util::Cpu::tADX);
}
void init(Op& op)
{
reset(); // reset jit code for reuse
setProtectModeRW(); // read/write memory
init_inner(op);
setProtectModeRE(); // set read/exec memory
}
private:
void init_inner(Op& op)
{
// the following labels assume sf(this, 3, 10 | UseRDX)
Label mulPreL;
Label fpDbl_modL;
Label fp_mulL;
op_ = &op;
p_ = op.p;
rp_ = fp::getMontgomeryCoeff(p_[0]);
@ -293,7 +303,7 @@ struct Code : Xbyak::CodeGenerator {
align(16);
op.fp_mul = getCurr<void4u>(); // used in toMont/fromMont
op.fp_mulA_ = getCurr<void3u>();
gen_mul();
gen_mul(fp_mulL);
align(16);
op.fp_sqrA_ = getCurr<void2u>();
gen_sqr();
@ -327,9 +337,9 @@ struct Code : Xbyak::CodeGenerator {
op.fpDbl_modA_ = getCurr<void2u>();
if (op.N == 4) {
StackFrame sf(this, 3, 10 | UseRDX, 0, false);
call(fpDbl_modL_);
call(fpDbl_modL);
sf.close();
L(fpDbl_modL_);
L(fpDbl_modL);
gen_fpDbl_mod4(gp0, gp1, sf.t, gp2);
ret();
} else {
@ -342,16 +352,16 @@ struct Code : Xbyak::CodeGenerator {
if (op.N == 4) {
/*
fpDbl_mulPre is available as C function
this function calls mulPreL_ directly.
this function calls mulPreL directly.
*/
StackFrame sf(this, 3, 10 | UseRDX, 0, false);
#if 0
call(mulPreL_);
call(mulPreL);
#else
mulPre4(gp0, gp1, gp2, sf.t);
#endif
sf.close(); // make epilog
L(mulPreL_); // called only from asm code
L(mulPreL); // called only from asm code
mulPre4(gp0, gp1, gp2, sf.t);
ret();
} else {
@ -375,13 +385,13 @@ struct Code : Xbyak::CodeGenerator {
gen_fp2_neg4();
align(16);
op.fp2Dbl_mulPreA_ = getCurr<void3u>();
gen_fp2Dbl_mulPre();
gen_fp2Dbl_mulPre(mulPreL);
align(16);
op.fp2_mulA_ = getCurr<void3u>();
gen_fp2_mul4();
gen_fp2_mul4(fpDbl_modL);
align(16);
op.fp2_sqrA_ = getCurr<void2u>();
gen_fp2_sqr4();
gen_fp2_sqr4(fp_mulL);
align(16);
op.fp2_mul_xiA_ = getCurr<void2u>();
gen_fp2_mul_xi4();
@ -730,7 +740,7 @@ struct Code : Xbyak::CodeGenerator {
shr(*t0, c);
mov(ptr [pz + (pn_ - 1) * 8], *t0);
}
void gen_mul()
void gen_mul(Label& fp_mulL)
{
if (op_->primeMode == PM_NIST_P192) {
StackFrame sf(this, 3, 10 | UseRDX, 8 * 6);
@ -740,11 +750,11 @@ struct Code : Xbyak::CodeGenerator {
if (pn_ == 3) {
gen_montMul3(p_, rp_);
} else if (pn_ == 4) {
gen_montMul4(p_, rp_);
gen_montMul4(fp_mulL, p_, rp_);
} else if (pn_ <= 9) {
gen_montMulN(p_, rp_, pn_);
} else {
throw cybozu::Exception("mcl:Code:gen_mul:not implemented for") << pn_;
throw cybozu::Exception("mcl:FpGenerator:gen_mul:not implemented for") << pn_;
}
}
/*
@ -1108,10 +1118,10 @@ struct Code : Xbyak::CodeGenerator {
z[0..3] <- montgomery(x[0..3], y[0..3])
destroy gt0, ..., gt9, xm0, xm1, p2
*/
void gen_montMul4(const uint64_t *p, uint64_t pp)
void gen_montMul4(Label& fp_mulL, const uint64_t *p, uint64_t pp)
{
StackFrame sf(this, 3, 10 | UseRDX, 0, false);
call(fp_mulL_);
call(fp_mulL);
sf.close();
const Reg64& p0 = sf.p[0];
const Reg64& p1 = sf.p[1];
@ -1128,7 +1138,7 @@ struct Code : Xbyak::CodeGenerator {
const Reg64& t8 = sf.t[8];
const Reg64& t9 = sf.t[9];
L(fp_mulL_);
L(fp_mulL);
movq(xm0, p0); // save p0
mov(p0, (uint64_t)p);
movq(xm1, p2);
@ -2001,7 +2011,7 @@ struct Code : Xbyak::CodeGenerator {
assert(pn_ >= 1);
const int freeRegNum = 13;
if (pn_ > 9) {
throw cybozu::Exception("mcl:Code:gen_preInv:large pn_") << pn_;
throw cybozu::Exception("mcl:FpGenerator:gen_preInv:large pn_") << pn_;
}
StackFrame sf(this, 2, 10 | UseRDX | UseRCX, (std::max<int>(0, pn_ * 5 - freeRegNum) + 1 + (isFullBit_ ? 1 : 0)) * 8);
const Reg64& pr = sf.p[0];
@ -2275,8 +2285,8 @@ struct Code : Xbyak::CodeGenerator {
L("@@");
}
private:
Code(const Code&);
void operator=(const Code&);
FpGenerator(const FpGenerator&);
void operator=(const FpGenerator&);
void make_op_rm(void (Xbyak::CodeGenerator::*op)(const Xbyak::Operand&, const Xbyak::Operand&), const Reg64& op1, const MemReg& op2)
{
if (op2.isReg()) {
@ -2804,7 +2814,7 @@ private:
}
}
}
void gen_fp2Dbl_mulPre()
void gen_fp2Dbl_mulPre(Label& mulPreL)
{
assert(!isFullBit_);
const RegExp z = rsp + 0 * 8;
@ -2827,12 +2837,12 @@ private:
add(gp0, FpByte_ * 2); // d1
lea(gp1, ptr [s]);
lea(gp2, ptr [t]);
call(mulPreL_);
call(mulPreL);
// d0 = a c
mov(gp0, ptr [z]);
mov(gp1, ptr [x]);
mov(gp2, ptr [y]);
call(mulPreL_);
call(mulPreL);
// d2 = b d
lea(gp0, ptr [d2]);
@ -2840,7 +2850,7 @@ private:
add(gp1, FpByte_);
mov(gp2, ptr [y]);
add(gp2, FpByte_);
call(mulPreL_);
call(mulPreL);
mov(gp0, ptr [z]);
add(gp0, FpByte_ * 2); // d1
@ -2928,7 +2938,7 @@ private:
gen_raw_neg(sf.p[0], sf.p[1], sf.t);
gen_raw_neg(sf.p[0] + FpByte_, sf.p[1] + FpByte_, sf.t);
}
void gen_fp2_mul4()
void gen_fp2_mul4(Label& fpDbl_modL)
{
assert(!isFullBit_);
const RegExp z = rsp + 0 * 8;
@ -2969,14 +2979,14 @@ private:
mov(gp0, ptr [z]);
lea(gp1, ptr[d0]);
call(fpDbl_modL_);
call(fpDbl_modL);
mov(gp0, ptr [z]);
add(gp0, FpByte_);
lea(gp1, ptr[d1]);
call(fpDbl_modL_);
call(fpDbl_modL);
}
void gen_fp2_sqr4()
void gen_fp2_sqr4(Label& fp_mulL)
{
assert(!isFullBit_);
const RegExp y = rsp + 0 * 8;
@ -3006,7 +3016,7 @@ private:
// t1 = 2ab
mov(gp1, gp0);
mov(gp2, ptr [x]);
call(fp_mulL_);
call(fp_mulL);
if (nocarry) {
Pack a = sf.t.sub(0, 4);
@ -3038,7 +3048,7 @@ private:
mov(gp0, ptr [y]);
lea(gp1, ptr [t2]);
lea(gp2, ptr [t3]);
call(fp_mulL_);
call(fp_mulL);
mov(gp0, ptr [y]);
for (int i = 0; i < 4; i++) {
mov(rax, ptr [(RegExp)t1 + i * 8]);
@ -3047,46 +3057,6 @@ private:
}
};
struct FpGenerator {
static const size_t codeSize = 4096 * 8;
static const size_t pageSize = 4096;
uint8_t *mem;
Code *code;
FpGenerator()
: mem((uint8_t*)cybozu::AlignedMalloc(codeSize, pageSize))
, code(0)
{
}
void init(Op& op)
{
if (code) {
setRW();
delete code;
}
code = new Code(codeSize, mem, op);
setRE();
}
~FpGenerator()
{
setRW();
delete code;
cybozu::AlignedFree(mem);
}
private:
FpGenerator(const FpGenerator&);
void operator==(const FpGenerator&);
void setRW()
{
Xbyak::CodeArray::protect(mem, codeSize, Xbyak::CodeArray::PROTECT_RW);
}
void setRE()
{
if (!Xbyak::CodeArray::protect(mem, codeSize, Xbyak::CodeArray::PROTECT_RE)) {
throw cybozu::Exception("err protect read/exec");
}
}
};
} } // mcl::fp
#ifdef _MSC_VER

4
test/fp_generator_test.cpp
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@ -152,7 +152,7 @@ void testMulI(const mcl::fp::FpGenerator& fg, int pn)
mpz_class my;
mcl::gmp::set(my, y);
mx *= my;
uint64_t d = fg.code->mulUnit_(z, x, y);
uint64_t d = fg.mulUnit_(z, x, y);
z[pn] = d;
mcl::gmp::setArray(my, z, pn + 1);
CYBOZU_TEST_EQUAL(mx, my);
@ -162,7 +162,7 @@ void testMulI(const mcl::fp::FpGenerator& fg, int pn)
uint64_t z[MAX_N + 1];
rg.read(x, pn);
uint64_t y = rg.get64();
CYBOZU_BENCH_C("mulUnit", 10000000, fg.code->mulUnit_, z, x, y);
CYBOZU_BENCH_C("mulUnit", 10000000, fg.mulUnit_, z, x, y);
}
}

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